Hdsd Sacs2011_sacs 5.3

SACS USER TRAINING COURSE NOTES SEPT 2011 HO CHI MINH CITY

OFFSHORE STRUCTURAL DESIGN & ANALYSIS SYSTEM BY ENGINEERING DYNAMICS, INC

Engineering Dynamics, Inc. Section 1

Training 2011

Starting a model

In windows file explorer create a directory called “Training Project”, and a subdirectory called “Structural Modeling”. Launch SACS Executive and go to “SACS Settings\Units Settings” and set default units to “Metric KN Force”. Then click on the “OK” button. See picture below.

Set current working directory to “Structural Modeling” and launch Precede program by clicking on “Modeler”icon in “Interactive” window of Executive (See picture below).

Click here to launch Precede

Structural Modeling Page - 1

Engineering Dynamics, Inc.

Training 2011

Select “Create New Model” and click ok. Then select “Start Structure Definition Wizard” and click ok.(See two pictures below). Click here to create the new model

Section 2

Defining the jacket/pile and conductor model

Define the jack/pile based on the drawing 101 Elevations: Water depth 79.5 m Working point elevation: 4.0 m Pile connecting elevation: 3.0 m Mudline elevation, pile stub elevation, and leg extension elevation: -79.5m Other intermediate elevations: -50.0, -21.0, 2.0, 15.3 (cellar deck), 23.0m (main deck) (See picture below)



Training 2011

Keep “Generate Seastate hydrodynamic data” checked to create hydrodynamic data, such as pile and w.b overrides. Legs: Click on the “Legs” Tab to enter the data for the jacket legs. Number of legs: 4 Leg type: Ungrouted Leg spacing at working point: X1=15 m, Y1=10 m. Row Labeling: Define the Row label to match the drawing Pile/Leg Batter: Row 1 (leg 1 and leg 3, 1st Y Row) is single batter in Y Row 2 (leg 2 and leg 4, 2nd Y Row) is double batter (See picture below for the details of the input) Click here to define leg spacing at the working point.

Conductors: Click on the “Conductors” Tab and then click on “Add/Edit Conductor Data” to enter the data for the conductors. One conductor well bay that has four conductors The top conductor elevation: 15.3m First conductor number: 5 Number of conductors in X direction: 2 Number of conductors in Y direction: 2 The location of first conductor (LL): X= -4.5m, Y= -1.0m (See drawing 102/104) The distance between conductors: 2.0m in both X and Y directions. Disconnected elevations: -79.5m, 3.0m, and 4.0m. Structural Modeling Page - 3


Training 2011

(See picture below for the details of the conductor data input)

Click-on “Apply” to create the leg/pile and conductor model as shown below.



Training 2011

Save model: Go to File/Save As, click “O.K” from prompted window and give file name sacinp.dat_01. Define properties of leg members: We can set up the User Defined Units as English Units for tubular member diameters and wall thickness. On the Precede toolbar select “Property”>“Member Group”. The Member Group Manage Window will show up (See picture on the right). The Undefined Group window shows all group IDs which are assigned to members, but their properties have not been defined. The IDs will be moved to Defined Groups Window after properties are defined. Click “LG1” from Undefined Groups window and then click on “Add” Tab to define the section and material properties of LG1.This group is segmented and the data can be found in Drawing 101. Segment 1: D =48.5in, T = 1.75in, Fy = 34.50 kN/cm2, Segment Length = 1.0 m Segment 2: D =47.0in, T = 1.0in , Fy = 24.80 kN/cm2 Segment 3: D = 48.5in, T = 1.75in, Fy = 34.50 kN/cm2, Segment Length = 1.0 m Member is flooded The unit of each input filed can be modified to use available data. In the pictures below the unit of Outside Diameter and Thickness are changed to English (in). The segment length will be designed later. See the pictures below for the details of the LG1 group data input.


Engineering Dynamics, Inc. Click here to add segment

Training 2011 Click here to add thethird

Click here after the last segment is defined to finish group LG1

Repeat above to define LG2 and LG3 group, the data can be found in Drawing 101. Define groupLG4,DL6, DL7, CON, PL* and Wishbone groups, find the section dimensions from Drawing 101. LG4 = 48.5”x1.75” DL6 = 42”x1.5” DL7 = 42”x1.5” CON = 30”x1” flooded PL* = 42”x1.5” W.B. = 30”x1” flooded To define those non-segmented groups click the group ID from Undefined Group Window and then click on “Add” Tab; enter the data and “Apply”. The picture on the right shows the LG4 data. All above groups have section type of Tubular, and both the geometry and material data can be defined in Group Manage window.



Training 2011

Save model: File/Save As, and name the file to sacinp.dat_02. Member groups defined at this time shall look like the following: ------------------------------------------------------------------------------------------------------------GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP

CON DL6 DL7 LG1 LG1 LG1 LG2 LG2 LG2 LG3 LG3 LG3 LG4 PL1 PL2 PL3 PL4 PL5 W.B

76.200 106.68 106.68 48.500 47.000 48.500 123.19 119.38 123.19 123.19 119.38 123.19 123.19 106.68 106.68 106.68 106.68 106.68 76.200

2.540 3.810 3.810 1.750 1.000 1.750 4.445 2.540 4.445 4.445 2.540 4.445 4.445 3.810 3.810 3.810 3.810 3.810 2.540

20.007.72224.80 20.007.72224.80 20.007.72224.80 20.007.72234.50 20.007.72224.80 20.007.72234.50 20.007.72234.50 20.007.72224.80 20.007.72234.50 20.007.72234.50 20.007.72224.80 20.007.72234.50 20.007.72234.50 20.007.72224.80 20.007.72224.80 20.007.72224.80 20.007.72224.80 20.007.72224.80 20.007.72224.80

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00

0.500F7.8490 0.500 7.8490 0.500 7.8490 0.500F7.84901.00 0.500F7.8490 0.500F7.84901.00 0.500F7.84901.00 0.500F7.8490 0.500F7.84901.00 0.500F7.84901.00 0.500F7.8490 0.500F7.84901.00 0.500F7.8490 0.500 7.8490 0.500 7.8490 0.500 7.8490 0.500 7.8490 0.500 7.8490 0.500F7.8490

------------------------------------------------------------------------------------------------------------Section 3

Create the horizontal framings of the jacket

Open file sacinp.dat_02 or continue from last section. Step 1 Select the View Go to “Display”> “Plan” and pick -79.5 to create the framing at the mudline elevation.The Structural plan can be found in Drawing 103Plan @ EL (-) 79 500. The model of the plan after built will be shown in the model plot Plan at EL-79.5 Go to “Display”>“Group Selection” to exclude Pile and Wishbone elements from the current view. See picture below for details. You should only see the joints on the jacket legs and conductors in the current view.



Training 2011

Exclude selected groups from the view

Groups selected

Uncheck here to remove unattached joints

Step 2 Add horizontal members to connect the legs Go to “Member”>“Add” to get dialog box shown below. Click on 101L and 102L and enter “H11”as group ID. Then click on “Apply” or Rightclick to add the member, see picture on the right. Repeat to create member 101L-103L, 102L04L and 103L-104L.

Step 3 Divide the members by ratio The joint 1100, 1101 and 1102 can be added by divide member by ratio since the joints are at the mid points of the beams.



Training 2011 To create joint 1100, go to “Member”> “Divide”>“Ratio” to get the dialog box shown on the left. Click-on Member 103L-104L Enter 0.5 to “Ratio from joint A” Enter new joint name 1100 Check on “Use next available…” Leave others blank Click Apply to create the joint

You will be getting a new joint and two new elements, the original member 103L-104L has been replaced by two new created members. Repeat this step to create joint 1101 and 1102. Step 4 Divide the member by length Joint 1103 and 1104 can be defined by using Divide by Distance based on the available dimensions on Drawing 101.

To create joint 1103, go to “Member”>“Divide”>“Length” to get the dialog box shown on the left. Click to select member 101L-103L Enter 11.35m to “Length from Joint A” New Joint name should be 1103 Keep “Use next available name” checked Leave others blank Joint 1004 can be added same way with distance=4.0m.

Step 5 Connect diagonal brace members Add a member connecting Joint 1101-1100, and define group label as “H12”. Add the members connecting Joint 1101-1102, 1102-1100, 1104-1100 and 1101-1103, and define group ID as “H13”.



Training 2011

Step 6 Create well head frame members Joint 1105 and 1106can be defined by using Divide by Length based on the available dimensions on Drawing 101, same as Joint 1103 and 1104.

To create joint 1105, go to “Member”>“Divide”>“Length” to get the dialog box on the left. Click to select member 1101-1100 Enter 11.35m to “Length from Joint A” New Joint name should be 1105 Keep “Use next available name” checked Leave others blank Joint 1006 can be added the same way with distance=4.0m.

Add member 1104-1106 and 1103-1105, Group ID should be “H13” Use “Member”>“Divide”>“Length” to create Joint 1107, 1108, 1109 and 1110. The distances can be found in the drawing, see pictures below for adding Joint 1107 and 1110.

Add Member 1107-1108 and 1109-1110 with Group ID H14. Step 7 Define member group properties Define the group properties to H11, H12, H13 and H14, the dimensions and material can be found in the drawing. The pictures below show the sample of H11 and H12 definition.



Training 2011

Note that the unit of each input can be changed to match available data. The following pictures show the diameter and thickness being changed to an English Unit so the data from the drawing can be input directly. *Make sure units chosen are correct.

Repeat all the steps in Section 3 to create horizontal plans at elevation -50.0m, -21.0m and 2.0m.All the data and dimensions needed to build the model can be found in Drawings 102 and 103.The joint name and group ID can be found in model plots Plan at EL-50, Plan at EL-20 and Plan at EL+2 PDF files. Section 4

Create conductor guide framing

Use Plan at EL-50.0 as a sample: Step 1 Create the joints to connect the conductor guide Divide members 2107-2109, 2108-2110 by ratios to create joints 2111 and 2112; Add members 2107-2108, 2109-2110, and 2111-2112 and then divide them by ratios to create joint 2113, 2114, and 2115. Connect members 2113-2115 and 2115-2114. Step 2 Define member group for conductor guide frame Use “Property”>“Member Group” to define the group property for the conductor guide frame. The conductor and frame connection model is shown in the picture below. Structural Modeling Page - 11


Training 2011

Repeat the steps above to build the conductor connections at elevation -21.0 and 2.0. Save the file to SACINP.dat_03. Section 5

Create diagonal members on jacket rows

Step 1: Open sacinp.dat_03 with Precede and go to “Display”>“Face” and pick “Row A”. Step 2 Go to “Display”>“Group Selections” to turn off the Pile and Wishbone elements from the view. Step 3: Turn on the Joint and Group label by clicking on the “J” and “G” icon on the toolbar. Step 4: Define the X-brace between elevation - 79.5m and -50.0m.



Training 2011

Go to “Member”>“X-Brace” to get the dialog box on the right, and enter the data: Center joint name 101X Pick four joints 101L, 202L, 201L and 102L (Pick the joints diagonally) Enter BR1 as group ID of through members (101L-202L) Enter BR2 as the group of other members Use 0.9 as the K factor Click on “Apply”

Step 5: Define the X-brace between elevation 50.0m and -21.0m Go to “Member”>“X-Brace” to get the dialog box on the right, and enter the data: Center joint name 201X Pick four joints 202L, 301L, 302L, and 201L (Pick the joints diagonally) Enter BR3 as group ID for through members (202L-301L) Enter BR4 as the group for the other members Use 0.9 as the K factor Click on “Apply” Step 6 Repeat Step 5 to build the X-brace between Elevation -21.0m and 2.0m.The new center joint name should be 301X; group IDs should be BR5 for through members and BR6 for others. The locations of center joints 101X, 201X and 301X are automatically calculated by the program.



Training 2011

Step 7 Repeat Step 1 to Step 6 to build X-braces on Row B, Row 1 and Row 2; use same Group IDs and the center joint ID starts from 102X on Row B, 103X on Row 1 and 104X on Row 2. Step 8 Define the group properties for the X-brace members. BR1, BR3, and BR5 are through members which are segmented. BR2, BR4, and BR6 are non-segmented members. The dimensions of all members can be found in Drawing 101. Save model and give a new name sacinp.dat_04. Section 6

Creating deck frame

Step 1 Cellar Deck (El +15.30m): Go to “File”>“Structure Definition” and click on the “Deck Girders” Tab. Then click on “Add/Edit Deck Girder Data”. You should see the following window below. Deck elevation: select 15.30 Deck extension: input 4.0m at structure North and South Click “Apply” to apply the input information to the model.

Check-on here to add the deck extension beams



Training 2011

Step 2 Main deck (El +23.0m) Click on “Add/Edit Deck Girder Data” Deck elevation: Deck extension:

select 23.00 input 4.0m at structure North and South, 5.0m at structure East

Click “Apply” or “OK” to apply to model. By clicking ok it will apply to the model and also close out the structure definition box.

Check-on here to add the deck extension beams

Step 3 Go to “Display”>“Plan” and select Plan at 15.3. Then go to “Display”>“Labeling”>“Special” and turn off “Show jacket rows” to get a larger view. Turn on the Joint and Group Label from Toolbar icon. Step 4 Change the member group ID to W01 and W02 as shown in model plot Plan at 15.3, go to “Member” > “Details/Modify” and select the elements to change. Step 5



Training 2011

The Member divide feature can be used to simplify modeling. Joint and group names should be defined as shown in the model plot Plan at 15.3. The dimensions needed to build the model can be found in Drawing 202. The functions recommended to build the frame model are: “Member”>“Divide”>”Distance” “Member”>“Divide”>”Ratio” “Member” >“Divide”>”Perpendicular” The new created joints naming should start from 7100.All the distances and ratios can be found in the drawing. The conductor guide should be connected to the deck using dummy members. This is the same as the ones in the jacket. Step 6 Repeat Step 3 to Step 5 to build the frame in EL 23.00 plan, and the modeling results are shownin the model plotPlan at 23.0. Step 7 Define the properties for group W01 and W02; the sections should be selected from the AISC 9th edition Library.

Click to select Section from the Library

Select wide flange only

The above three pictures is a sample of how to define W01 (From Left to Right).Repeat it to define the properties for W02. Deck member groups defined at this time shall look like thefollowing: ------------------------------------------------------------------------------------------------------------GRUP W01 W24X162 GRUP W02 W24X131

20.007.72224.80 1 20.007.72224.80 1

1.001.00 1.001.00

7.8490 7.8490

------------------------------------------------------------------------------------------------------------Structural Modeling Page - 16


Training 2011

Save the model as sacinp.dat_05 Section 7

Joint connection design

Step 1 Include only the jacket in the current active window. Exclude the deck, piles, conductors, and wishbone element from the current view. Go to “Display”>“Group Selections” and exclude group PL1-PL5, W01, W02, CON, DL6DL7, and W.B. Check off “show unattached joints” and then click on “Apply”. Refer to the picture below.

Step 2 Go to “Joint”> “Connection” > “Automatic Design”. Check the box “Offset braces to outside of chord”. For “Gapping option” use “Move Brace”, and for “Brace Move” use “Along Chord”. Set Gap = 5 cm and Gap size option to “Minimum only”. Select “Use existing offsets if gap criteria is met”.



Training 2011

Under joint Can/Chord options select “Update segmented groups can lengths” and set “Can length option” to “API minimum requirements”. Select “Increase joint can lengths only”, seee above two pictures for the detail options to be selected and click on “Apply” to create the joint can model. The leg member’s segment lengths are automatically updated and the member end offsets of each brace member are created automatically. Step 3 Create dummy members to connect the guide joint to the framing joint created in last step. The conductor and frame connection model is shown in the picture below. DUM = 12.75” x .375”



Training 2011

Repeat the steps above to build the conductor connection elevation -21.0, 2.0 and 15.3. Save the model to sacinp.dat_06. The final updated Can length for legs shall look like the following: ------------------------------------------------------------------------------------------------------------GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP GRUP

LG1 LG1 LG1 LG2 LG2 LG2 LG3 LG3 LG3 LG4

123.19 119.38 123.19 123.19 119.38 123.19 123.19 119.38 123.19 123.19

4.445 2.540 4.445 4.445 2.540 4.445 4.445 2.540 4.445 4.445

20.007.72234.50 20.007.72224.80 20.007.72234.50 20.007.72234.50 20.007.72224.80 20.007.72234.50 20.007.72234.50 20.007.72224.80 20.007.72234.50 20.007.72234.50

1 1 1 1 1 1 1 1 1 1

1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00 1.001.00

0.500F7.84902.10 0.500F7.8490 0.500F7.84901.76 0.500F7.84902.16 0.500F7.8490 0.500F7.84901.63 0.500F7.84902.33 0.500F7.8490 0.500F7.84901.60 0.500 7.8490

------------------------------------------------------------------------------------------------------------Section 8

Define deck beam offsets

Step 1 Go to “Display”>“Plan” and select plan at 15.3m. Exclude group DUM, W.B and CON from current view. Step 2



Training 2011

Go to “Member” > “Offsets…” and drag a window to pick all members in current view (Selected members will be highlighted in red). Change “Offset Type to “Top of Steel”. Click on “Apply” to create the offsets. Refer to picture on the right. Note: The deck beam properties must be defined before you can define the offset type to “Top of Steel”.

Step 3 Repeat above two steps to define the offset for the beams at Plan EL 23.00m. Save the model to sacinp.dat_06. Section 9

Define member code check properties

Define Ky/Ly for horizontal framings: Use “Property” > “K Factor” > “Ky” to modify Ky factor for H11 members in XY plane Z=79.50 m and H21 members in XY plane Z=-50.0 m Use “Property” > “Effective Length” > “Ly” to modify Ly factor for H31 members in XY plane Z=-21.0 m and H41 members in XY plane Z=2.0 m Section 10

Define deck weight (Area weight)

Step 1 Add cellar deck surface weight ID (CELLWT1) Using “Weight” > “Surface Definition” input “CELLWT1” for Surface ID, pick up joint 71BD, 71ED, and 74BD for local coordinate joints. Input 0.5 for Tolerance, and pick up71BD, 71ED, 74ED and 74BD by holding CTRL key for Boundary joints. Select load direction to “Members in local Y” and then click Apply to add this surface ID definition.



Training 2011

Step 2 Add main deck surface weight ID (MAINWT1) Using “Weight” > “Surface Definition” input “MAINWT1” for Surface ID. Pick up joint 81BD, 81FD and 84BD for local coordinate joints, input 0.5 for Tolerance, and pick 81BD, 81FD, 84FD and 84BD by holding CTRL key for Boundary joints. Select load direction to “Local Y” and then click Apply to add this surface ID definition.

Step 3 Add weight group AREA by adding surface weight for deck



Training 2011

Using “Weight” > “Surface Weight” input AREA as Weight Group and AREAWT as Weight ID, input weight pressure of 0.5 kN/m2 for the cellar deck and move CELLWT1 to “Included Surface IDs” and click “Apply”. Then input a weight pressure of 0.75 kN/m2 for the main deck and move MAINWT1 to “Included Surface IDs” and click “Apply”.

Step 4 Add weight group LIVE by adding surface weight Add weight group LIVE by using surface weight feature as in step 3. Weight ID MAINLIVE includes the main deck weight pressure of 5.0 kN/m2and ID CELLLIVE includes the cellar deck weight pressure = 2.5kN/m2.



Training 2011

The added surface IDs and surface weights shall look like following: ------------------------------------------------------------------------------------------------------------SURFID CELLWT1 LY 71BD 71ED 74BD 0.500 SURFDR 71BD 71ED 74ED 74BD SURFID MAINWT1 LY 81BD 81FD 84BD 0.152 SURFDR 81BD 81FD 84FD 84BD SURFWTAREA 0.500AREAWT 1.001.001.00CELLWT1 SURFWTAREA 0.750AREAWT 1.001.001.00MAINWT1 SURFWTLIVE 2.500CELLLIVE 1.001.001.00CELLWT1 SURFWTLIVE 5.000MAINLIVE 1.001.001.00MAINWT1

------------------------------------------------------------------------------------------------Section 11

Define deck weight (Equipment weight)

Step 1 Define Skid1 Use “Weight” > “Footprint Weight” Weight group is EQPT and Footprint ID is SKID1; Weight = 1112.05 kN; Footprint center (5.0, 2.0, 23.0); Relative weight center (0, 0, 3.0) Skid Length = 6 m; Skid Width = 3 m; 2 skid beams in X direction (longitudinal)

Click Apply and the summation of forces will be shown on a pop-up window. To save the input footprint weight select Keep. Step 2 Define Skid2 Weight group is EQPT and Footprint ID isSKID2 Weight = 667.23 kN; Footprint center (-5.0, -7.0, 23.0); Relative weight center (0, 0, 2.5) Structural Modeling Page - 23


Training 2011

Skid Length = 6 m; Skid Width = 2.5 m; 2 skid beams in X direction (longitudinal)

Step 3 Define Skid4 Weight group ID is EQPT and Footprint ID is SKID4 Weight = 155.587 kN; Footprint center (10.0, 6.0, 23.0); Relative weight center (0, 0, 4.0) Skid Length = 6 m; Skid Width = 3 m; 3 skid beams in X direction (longitudinal)

Step 4 Define Skid3 Structural Modeling Page - 24


Training 2011

Weight group is EQPT and Footprint weight ID is SKID3 Weight = 444.82 kN; Footprint center (5.0, 0.0, 15.3); Relative weight center (0, 0, 2.0) Skid Length = 6 m; Skid Width = 2.5 m; 2 skid beams in X direction

The added EQPT footprint weights shall looks like following: ------------------------------------------------------------------------------------------------------------WGTFP EQPT1112.05SKID1 WGTFP2 1.001.001.00.152L WGTFP EQPT667.230SKID2 WGTFP2 1.001.001.00.152L WGTFP EQPT155.587SKID4 WGTFP2 1.001.001.00.152L WGTFP EQPT444.820SKID3 WGTFP2 1.001.001.00.152L

5.000 2.00023.000R

3.0006.0003.000 2

-5.000-7.00023.000R

2.5006.0002.500 2

10.000 6.00023.000R

4.0006.0003.000 3

5.000

15.300R

2.0006.0002.500 2

------------------------------------------------------------------------------------------------------------Section 12

Define misc weight on the deck and the jacket

Step 1 Walkway on the main and cellar decks Go to “Weight” > “Member Weight” and hold control key to select all members on the east side of the decks, and enter the following data:


Engineering Dynamics, Inc. Weight group: Weight ID: Weight Category: Coordinate system: Initial weight value: Final weight value: Load dir. factors:

Training 2011

MISC Walkway Distribute Global 2.773 kN/m 2.773 kN/m Defaults

Click on “Apply” and keep the weight.

Step 2 Enter crane weight Go to “Weight” > “Joint Weight” and pick up joint 804L and enter the data: Weight Group: MISC Weight ID: CRANEWT Weight: 88.964kN Load dir. Factors: Defaults Click on “Apply” then select “Keep”, see pictures on the right.

Step 3 Enter the Firewall weight Go to “Weight” > “Member weight” and select the following members: 703L-74BD, 71027103, 7106-7107, and then enter the following data:



Training 2011

Weight Group: MISC Weight ID: FIREWALL Weight Cate.: concentrated Coord system: Global Concen. Weight: 15.0kN Distance: 1.5m Load factors: Defaults Click on “Apply” and select to “Keep” the weight, see pictures on the right for details.

Step 4 Enter Padeye weight on the jacket Go to “Weight” > “Joint Weight” and pick up joint 501L, 502L, 503L and 504L, and enter the following data: Weight group: LPAD Weight ID: PADEYE Weight: 2.0kN Check on “Include buoyancy Density: 7.849 ton/m^3 Click on “Apply” and “Keep”, see pictures on right for details.

Step 5 Enter the walkway weight at boat landing elevation (EL 2.0m) Go to “Weight” > “Member Weight” and pick all the members at EL 2.0 plan except the wellbay members and then enter the data as following: Group ID: Weight ID: Weight Category: Coord. System: Initial weight:

WKWY WLKWAY Distributed Global 1.5kN/m


Final weight: Load dir. Factors: Include buoyancy: & wave load: Density:

1.5kN/m Defaults Yes Checked 1.5ton/m^3


Training 2011

Click on “Apply” and “Keep” the data. See picture on the right for details.

Step 6 Define Anode weight Go to “Display” > “Volumes” and select Type of volume to “Volumes to include”. Select joint 101L to get the min. Z-coordinate and select joint 301X to get the max. Z-coordinate, and then click Apply. This will display only the part of jacket with anode protection. Go to “Display” > “Group selection” to exclude group DUM, PL1-PL5, W.B, CON, H13-H14, H23-H24 and H32-H33.This will exclude the wishbone, conductor, pile, and horizontal elements from the current view. Go to “Weight” > “Anode Weight” and drag a window to select all the members in the current view and enter the data as following: Weight group ID: Weight ID: Anode weight: # Anodes: Anode space: Include Buoyancy: Density:

ANOD Anode 2.5kN 2/Member Equal On 2.70tonne/m^3

Click on “Apply” and “Keep” the weight, see picture on right for details.

Save the mode to Sacinp.dat_07. Part of jacket weights shall look like following: ------------------------------------------------------------------------------------------------------------WGTMEMANOD101L101X

6.040


2.500

1.001.001.00GLOBCONC 2.700ANODE

Engineering Dynamics, Inc. WGTMEMANOD101L101X 12.080 2.500 WGTMEMANOD103L102X 6.040 2.500 WGTMEMANOD103L102X 12.080 2.500 … … WGTJT LPAD 2.000PADEYE 501L 7.849 WGTJT LPAD 2.000PADEYE 502L 7.849 WGTJT LPAD 2.000PADEYE 503L 7.849 WGTJT LPAD 2.000PADEYE 504L 7.849 … … WGTMEMWKWY401L4101 1.500 WGTMEMWKWY4101402L 1.500 WGTMEMWKWY401L4103 1.500

Training 2011 1.001.001.00GLOBCONC 2.700ANODE 1.001.001.00GLOBCONC 2.700ANODE 1.001.001.00GLOBCONC 2.700ANODE

1.0001.0001.000 1.0001.0001.000 1.0001.0001.000 1.0001.0001.000

1.5001.001.001.00GLOBUNIF 1.500WLKWAY 1.5001.001.001.00GLOBUNIF 1.500WLKWAY 1.5001.001.001.00GLOBUNIF 1.500WLKWAY

------------------------------------------------------------------------------------------------------------Section 13

Deck Loads

To create inertia loads from various weights defined on deck structure three steps need to be performed: Step 1 Define the center of the acceleration: Go to “Weight”> “Center of Roll”, and define center ID CEN1 at (0.0, 0.0, 0.0) location. Then select “Apply”



Training 2011

Step 2 Define the accelerations: Use “Environmental”> “Loading”> “Weight”: Check off Acceleration and define 1.0g in Z direction for load condition AREA, EQPT, LIVE and MISC. Picture on the right shows the sample of load case AREA.

Step 3 Use the weight groups to create the loads: “Environmental”> “Loading”> “Weight”: Check off Include weight group. select weight group AREA, EQPT, LIVE and MISC to be included in load case. Use Load condition AREA, EQPT, LIVE and MISC respectively. Note: EQPT, LIVE, and MISC will already have acceleration defined from above, but included weight group needs to be added also. The picture shows the load case AREA definition. Save the model to Sacinp.dat_08 Weights defined on the jacket will be added to the environmental load conditions to account forthe possible buoyancy and possible wave loads. The added inertia load cases shall look like following: ------------------------------------------------------------------------------------------------------------LOAD LOADCNAREA INCWGT AREA ACCEL

1.00000


N CEN1

Engineering Dynamics, Inc. LOADCNEQPT INCWGT EQPT ACCEL LOADCNLIVE INCWGT LIVE ACCEL LOADCNMISC INCWGT MISC ACCEL

Training 2011

1.00000

N CEN1

1.00000

N CEN1

1.00000

N CEN1

------------------------------------------------------------------------------------------------------------Section 14

Environmental Loading

Step 1 Define drag and mass coefficients Use “Environmental”> “Global Parameters”> “Drag/Mass Coefficient” to define the data (Shown in the picture). Cd=0.6 and Cm=1.2 for both clean and fouled members. All the members have same Cd and Cm.

Step 2 Define marine growths

Go to “Environment”>“Global Parameters”>“Marine growth” to enter the data shown in the picture on the right.

The added marine growth override lines shall look like following: ------------------------------------------------------------------------------------------------------------MGROV MGROV MGROV

0.000 60.000

60.000 79.500

2.500 5.000

1.400 1.400

-----------------------------------------------------------------------------------------------------------Step 3 Hydrodynamic modeling Structural Modeling Page - 31


Training 2011

Go to “Environment”>“Global Parameters”>“Member Group Overrides” Override the jacket leg members with group ID LG1-LG3 That need to take into account the load increase due to the appurtenant structures like J-tubes and Risers. Highlight groups LG1-Lg3 that the overrides need to be added to. The picture on the right indicates that the drag and mass coefficients have been factored by 1.5 to account for the load increases.

The hydrodynamic model data should look like following: ------------------------------------------------------------------------------------------------------------GRPOV GRPOV GRPOV GRPOV GRPOV GRPOV GRPOV GRPOV GRPOV GRPOV GRPOVAL GRPOVAL GRPOVAL GRPOVAL GRPOV

LG1 F LG1 F LG1 F LG2 F LG2 F LG2 F LG3 F LG3 F LG3 F PL1NN PL2NN PL3NN PL4NN W.BNF 0.001

0.001

0.001 0.001 0.001 0.001 0.001

0.001 0.001 0.001 0.001 0.001

1.501.501.501.50 1.501.501.501.50 1.501.501.501.50 1.501.501.501.50 1.501.501.501.50 1.501.501.501.50 1.501.501.501.50 1.501.501.501.50 1.501.501.501.50 0.001 0.001 0.001 0.001 0.001

------------------------------------------------------------------------------------------------------------Step 4 Environmental loading Operating Storm (three directions considered: 0.00, 45.00, 90.00): load case P000, P045, P090 Jacket weight groups ANOD and WKWY should be included in all three load cases by using “Environment” > “Loading” > “Weight” > “Include Weight Group” to account for weight, buoyancy and wave/current loads. Go to “Environment”> “Loading”> “Seastate” to define the wave, current, wind and dead/buoyancy load parameters. The data can be found in the design specification, and the pictures below show the details of load case P000.




Training 2011


Training 2011

The 3 operating storm load case lines shall look like following: ------------------------------------------------------------------------------------------------------------LOADCNP000 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 WIND WIND D 25.720 CURR CURR 0.000 CURR 79.500 DEAD DEAD -Z LOADCNP045 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 WIND WIND D 25.720 CURR CURR 0.000 CURR 79.500 DEAD DEAD -Z LOADCNP090 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 WIND WIND D 25.720 CURR CURR 0.000 CURR 79.500 DEAD DEAD -Z

12.00 0.00 0.514 1.029

0.00

D

20.00

18MS10 1

AP08

0.000

-5.000BC LN

M BML

12.00 45.00 0.514 1.029

45.00

D

20.00

18MS10 1

AP08

45.000

-5.000BC LN

M BML

12.00 90.00 0.514 1.029

90.00

20.00

AP08

90.000


D

-5.000BC LN

M BML

18MS10 1


Training 2011

------------------------------------------------------------------------------------------------------------Extreme Storm (three directions considered: 0.00, 45.00, 90.00): load case S000, S045 andS090 Extreme storm load cases can be defined similar as the operating storm load cases, except 100year storm criteria are used to generate the environmental forces. Jacket weight groups ANOD and WKWY should be included in all three load cases. The water depth should be overridden to consider the high tide. The following pictures show the detailed input data from the Specification.



Training 2011

The 3 extreme storm load case lines shall look like following: ------------------------------------------------------------------------------------------------------------LOADCNS000 INCWGT ANODWKWY WAVE WAVE1.00STRE 12.19 81.00 15.00 WIND WIND D 45.170 0.00


0.00 AP08

D

20.00

18MS10 1

Engineering Dynamics, Inc. CURR CURR 0.000 CURR 81.000 DEAD DEAD -Z LOADCNS045 INCWGT ANODWKWY WAVE WAVE1.00STRE 12.19 WIND WIND D 45.170 DEAD DEAD -Z CURR CURR 0.000 CURR 81.000 LOADCNS090 INCWGT ANODWKWY WAVE WAVE1.00STRE 12.19 WIND WIND D 45.170 CURR CURR 0.000 CURR 81.000 DEAD DEAD -Z

Training 2011

0.514 1.801

0.000

81.000

81.00 15.00 45.00 81.000 0.514 1.801

M BML

45.00

90.00

20.00

18MS10 1

M BML -5.000BC LN

90.00

D

20.00

18MS10 1

AP08

90.000 90.000

81.000

D

AP08

45.000 45.000

81.00 15.00

0.514 1.801

-5.000BC LN

-5.000BC LN

M BML

------------------------------------------------------------------------------------------------------------Section 15

Load combination and code check options

Step 1 Load combination Six load combinations OPR1, OPR2, OPR3, STM1, STM2 and STM3 will be added into the model. Three of them are corresponding to operating storms and the other three are corresponding to extreme storms. Load factor of 1.1 will be used for environmental loads. The live load will be included with a factor of 0.75 in extreme storm load combinations. Go to “Load”>“Combine load conditions” to define the load combinations. The following two pictures show the combinations of operating and extreme storm conditions.



Training 2011

The load combination lines shall look like following: ------------------------------------------------------------------------------------------------------------LCOMB LCOMB LCOMB LCOMB LCOMB LCOMB LCOMB

OPR1 ORP2 ORP3 STM1 STM2 STM3

AREA1.0000EQPT1.0000LIVE1.0000MISC1.0000P0001.1000 AREA1.0000EQPT1.0000LIVE1.0000MISC1.0000P0451.1000 AREA1.0000EQPT1.0000LIVE1.0000MISC1.0000P0901.1000 AREA1.0000EQPT1.0000LIVE0.7500MISC1.0000S0001.1000 AREA1.0000EQPT1.0000LIVE0.7500MISC1.0000S0451.1000 AREA1.0000EQPT1.0000LIVE0.7500MISC1.0000S0901.1000

------------------------------------------------------------------------------------------------------------Step 2 Analysis load case selection Go to “Options”> “Load condition selection” to select all the load combinations to analyze and report. The picture on the right shows the input.

Step 3 Allowable stress modification factor (AMOD) Allowables can be increased by 1/3 based on API code, and this should be entered using the AMOD line. Go to “Options” > “Allowable stress/Mat Factor” and enter the data as shown in the picture below.

Add unity check partition line (UCPART). Go to “Options”>“Unity Check Ranges” and enter the data as shown in the picture below.



Training 2011

The LCSEL, UCPART and AMOD lines shall look like following: ------------------------------------------------------------------------------------------------------------LCSEL ST OPR1 ORP2 ORP3 STM1 STM2 STM3 UCPART 0.5000.5001.0001.000300.0 AMOD AMOD STM1 1.330STM2 1.330STM3 1.330

------------------------------------------------------------------------------------------------------------Save the model to Sacinp.dat_09



Training 2011 Linear Static Analysis

Section 1

Create the static analysis directory and separate the model file.

Step 1 Create the directory for static analysis Under “Training Project”, create “Static” subdirectory; copy sacinp.dat_09 to the directory, and make this directory current. Step 2 Separate the model Open sacinp.dat_09 with Precede and then go to File/Save As and select “Model data only”, and click-on “OK” to save the model file to sacinp.dat. See picture below.

Step 3 Separate the Environmental load Go to File/Save As and select “Seastate data only”, click-on “OK” to save the separated seastate input file to seainp.dat. See picture below.

Section 2

Create the static analysis run file

Step 1 Select the analysis type and sub-type

Linear Static Analysis - 1


Training 2011

Click on “Analysis Generator” from the Executive window and select “Statics” for Type and “Static analysis” for Subtype. See below picture for details.

Step 2 Select the Seastate analysis options Check and click on “Edit Environmental Loading Options” to active the Seastate program and get the Seastate Analysis Options shown as below. Select the option to match the definition in the picture below. Click on “O.K” to save the option.



Training 2011

Step 3 Select member code check options Click on “Edit Element Check Options” to get the code check option window and set the options Detailed as following: Use Post input file: “No” Code criteria: WSD AISC 9th/API 21st edition Stress/code check location: 2/2 Report option: Override the model Following reports should be turned on: Joint deflection Joint reaction Member end forces UC range Click-on “OK” to save the options.

Section 3

Run the analysis and review the results

Step 1 Define/change the result file extension name Change the file ID to “DAT” and click on “ID” icon to apply. Step 2 Select model input file, the model file is saved in step 2 of Section 1. Step 3 Select or check the Seastate input file. Step 4 Run the analysis.



Training 2011

See below picture for the location of above options. Type in or select the file ID here

Click here to run the analysis

Click here to apply

Check here for the file extension change

Click here to select model input file

Step 5 Check results Option 1: View results in Postvue Database, as shown below.



Training 2011



Training 2011

Option 2: View results from post listing file. ------------------------------------------------------------------------------------------------------------------SACS Release 5.3 ID=00000302 Jacket Definition 160

EDI DATE 12-FEB-2011

SACS-IV

TIME 14:58:55

PST PAGE

MEMBER UNITY CHECK RANGE SUMMARY

GROUP III - UNITY CHECKS GREATER THAN 1.00 AND LESS THAN*****

MEMBER

MAXIMUM LOAD GROUP COMBINED COND ID UNITY CK NO.

DIST FROM END

AXIAL STRESS N/MM2

BENDING STRESS Y Z N/MM2 N/MM2

SHEAR FORCE FY FZ KN KN

KLY/RY

KLZ/RZ

SECOND-HIGHEST UNITY LOAD CHECK COND

THIRD-HIGHEST UNITY LOAD CHECK COND

803L-8104 W01

1.064

OPR3

0.0

-5.42 -137.45

15.28

-5.12

230.20

18.9

64.6

1.001

OPR2

0.947

OPR1

804L-83FD W01

1.215

OPR3

0.0

0.01 -173.58

8.96

-3.80

241.87

18.9

64.6

1.189

OPR2

1.151

OPR1

8102-8103 W01

1.083

OPR3

5.0

-4.86

146.69

-7.64

0.01

160.96

18.9

64.6

1.077

OPR2

1.076

OPR1

8103-802L W01

1.632

OPR1

5.0

-5.17 -221.12

-14.84

-5.93 -503.48

18.9

64.6

1.556

OPR2

1.486

OPR3

8104-8105 W01

1.327

OPR3

5.0

-5.42

182.97

-7.16

204.14

18.9

64.6

1.302

OPR2

1.280

OPR1

8105-804L W01

1.903

OPR1

5.0

-5.29 -265.90

-8.30

-3.11 -609.63

18.9

64.6

1.864

OPR2

1.822

OPR3

802L-804L W02

1.760

OPR3

10.0

-2.24 -178.72

-6.53

-1.14 -606.86

38.5

132.5

1.726

OPR2

1.614

OPR1

8109-8111 W02

1.109

OPR1

2.0

0.03

178.92

2.95

-0.22

183.61

15.4

53.0

1.106

OPR2

1.097

OPR3

8111-8105 W02

1.041

OPR3

0.0

0.06

158.34

-9.82

4.71 -201.74

11.6

39.7

1.025

OPR2

1.023

OPR1

81BD-801L W02

1.836

OPR1

4.0

-0.01 -290.32

-9.73

-2.69 -786.05

15.4

53.0

1.824

OPR3

1.795

OPR2

0.09

-------------------------------------------------------------------------------------------------------------------



Training 2011

Static Analysis with Non-Linear Foundation Section 1

Create a PSI input data file

Step 1 Create a new folder and name it ‘Static PSI”, and then make it the current folder. Copy SACINP.DAT and SEAINP.DAT files from ‘Static” directory to current folder. Step 2 Create PSI input data file Click-on “Data file” icon to launch Datagen program, and select “Create new data file” and click-on OK to get the second window pop-up, as shown below; select “Pile Soil Interaction” as the analysis type and make sure the unit is Metric KN. Click-on Select and skip the “Title” and get next step to define the analysis options..

Step 3 Define analysis options Leave default options for both “General” and “Output Options”, and click “Next”.

Static analysis with PSI- 1


Training 2011

Step 4 Select the results to plot Click-on “No” to LCSEL and PILSUP cards. Click on “Yes” to PLTRQ card to get Plot Option window and select the options shown below.

Click-on “Next” and select “Include all piles in plot”, select all load cases to be plotted. Do not define plot size and specify pile section data until get Pile Group definition. Step 5 Define pile group Define two pile groups and one conductor group, the pile group ID =”PL1” and “PL2”; conductor group ID =”CND”. The first pile group segment length is 10m and second segment has length of 30m with available end bearing area of 0.656m^2.



Training 2011

Click-on “More” to add the segments or groups, and click-on “Next” to finish the pile group definition.

Click here to add more groups

Click here to get to next

Step 6 Define the piles Define the pile head joint, batter joint, pile group ID and soil ID as shown in following picture for the four piles, and repeat to define conductors. Click-on “More” to add a pile and click-on “Next” to finish the pile definition and get to next step.



Training 2011

Step 7 Define T-Z data type The picture on right shows the type of axial data can be defined in SACS system. The data for the training is T-Z data. Select “User Defined T-Z Curves” and click-on “Next” to get next step.

Step 8 Define T-Z axial header data The header data defines the total number of soil strata, Z-factor, Soil ID and the maximum data point of any T-Z curves. The data should be got from the Design Specification for this training, and is shown in following picture.

Click-on next to get to next step. Step 9 Define T-Z soil stratum data



Training 2011

This step defines the soil stratum information followed by soil data of each stratum (Step 10), the data needs to be defined is number of point of the curve, stratum location and T factors; following picture shows the stratum definition of the top soil.

Step 10

Define the soil data of the stratum

The data is from the spec document, the picture on right shows the soil at 0.0m location. Repeat Step 9 and 10 to enter all 8 soil T-Z curves.

Step 11

Define end bearing data

The picture below will show up when finish the step 10. Click-on “Yes” to enter the Q-Z axial header data.



Training 2011

Define the Q-T axial header data shown in below picture, click-on “Next” to accept the data and get to soil stratum data.

Define the soil stratum data as shown in following two pictures and repeat it for all the stratums.

Step 12

Torsional data

The torsional stiffness of the soil can be defined as linear spring, following two pictures gives the detail of the input.

Step 13

P-Y data input



Training 2011

The P-Y data input is similar to Axial T-Z data, follow the direction of Step 7 to 10 and get the data from the soil report to finish the input. Following two pictures show the soil type selection and P-Y header definition.

Following two pictures show the stratum and soil data definition at 0.0m location, repeat the input to define all the P-Y soils at rest locations.

Save the file and name it PSIINP.DAT. Section 2

Static analysis with PSI

Your current directory should have three input files: SEAINP.DAT containing the loading condition, SACINP.DAT containing the model information includes the weight definition and PSIINP.DAT containing the pile model information. Step 1 Select analysis type and options File ID: dat Analysis type: Static



Training 2011

Analysis subtype:

Static analysis with Pile/Soil Interaction

Analysis options:

selections are shown in the picture below

Step 2 Edit analysis options Click-on to get the window shown below and make selections as shown in the window, click-on “OK” when finish; Click-on to define the code option shown in below window on right: Code option: API RP 2A 21th edition/AISC 9th edition Segment to be checked: 2 for both segmented and non-segmented member Override the report to include Joint deflection, Joint reaction, Member end forces and the UC range report.



Training 2011

Step 3 Define input files and run the analysis Select the input files as shown in below window and check the output file names, click-on “Run Analysis” Tab to run the analysis.



Training 2011

Section 3

Check the analysis results

Member code check results can be checked from post listing file or Postvue database, see below. --------------------------------------------------------------------------------------------------------------PSI SAMPLE ANALYSIS

DATE 12-FEB-2011 SACS-IV

TIME 16:10:54

PST PAGE

158

MEMBER UNITY CHECK RANGE SUMMARY

GROUP III - UNITY CHECKS GREATER THAN 1.00 AND LESS THAN***** MAXIMUM MEMBER

LOAD

DIST

AXIAL

GROUP COMBINED COND

FROM

STRESS

END

N/MM2

ID

BENDING STRESS Y N/MM2

Z

UNITY CK

NO.

N/MM2

102P-202P PL1

1.438

STM1

0.0

-77.40 -114.13

103P-203P PL1

1.396

STM3

0.0

-84.84 -134.10

13.98

104P-204P PL1

1.636

STM2

0.0

-97.92 -140.61

803L-8104 W01

1.065

OPR3

0.0

804L-83FD W01

1.215

OPR3

0.0

8102-8103 W01

1.083

OPR3

5.0

-4.86

8103-802L W01

1.633

OPR1

8104-8105 W01

1.327

8105-804L W01 802L-804L W02

SHEAR FORCE FY KN

111.13 -144.24

FZ

KLY/RY

KLZ/RZ

KN

SECOND-HIGHEST

THIRD-HIGHEST

UNITY

LOAD

UNITY

LOAD

CHECK

COND

CHECK

COND

165.19

81.9

81.9

0.694

STM2

0.632

STM3

-18.21

187.41

81.5

81.5

0.751

STM2

0.733

STM1

-12.02

15.35

199.60

81.9

81.9

1.454

STM1

1.179

STM3

-5.42 -137.51

15.34

-5.14

230.24

18.9

64.6

1.002

OPR2

0.948

OPR1

0.01 -173.57

8.95

-3.79

241.85

18.9

64.6

1.189

OPR2

1.150

OPR1

146.66

-7.75

-0.03

160.83

18.9

64.6

1.078

OPR2

1.077

OPR1

5.0

-5.18 -221.15

-14.97

-5.99 -503.52

18.9

64.6

1.557

OPR2

1.489

OPR3

OPR3

5.0

-5.42

182.97

-7.23

204.19

18.9

64.6

1.302

OPR2

1.280

OPR1

1.902

OPR1

5.0

-5.29 -265.76

-8.28

-3.11 -609.48

18.9

64.6

1.863

OPR2

1.821

OPR3

1.758

OPR3

10.0

-2.24 -178.44

-6.55

-1.14 -606.56

38.5

132.5

1.724

OPR2

1.613

OPR1

0.08

---------------------------------------------------------------------------------------------------------------



Training 2011

Pile check results are listed in psi listing file. --------------------------------------------------------------------------------------------------------------PSI SAMPLE ANALYSIS

DATE 12-FEB-2011

TIME 16:10:51 PSI PAGE

465

PSI SAMPLE ANALYSIS * * * PILE GRUP LOAD JT.

CASE

P I L E

M A X I M U M

******* PILEHEAD FORCES ******* AXIAL

LATERAL

KN

KN

MOMENT KN-M

U N I T Y

C H E C K

S U M M A R Y

* PILEHEAD DISPLACEMENTS *

* * *

*********** STRESSES AT MAX. UNITY CHECK ************

AXIAL

LATERAL

ROTATION

DEPTH

CM

CM

RAD

M

AXIAL

FBY

----------------

FBZ

SHEAR

COMB.

UNITY

N/MM2

-------------

CHECK

4.22 1.11 7.13 20.44 18.66 18.91

-43.54 -35.66 -61.23 254.99 256.36 218.21

0.268 0.219 0.365 1.071 1.110 0.917

101P PL1 OPR1 OPR2 OPR3 STM1 STM2 STM3

-2045.22 -1233.30 -2139.58 3125.92 5852.36 2729.80

173.63 196.10 289.73 886.34 841.32 811.41

386.2 430.6 730.6 4514.2 3848.9 3849.2

0.16 0.10 0.16 -0.23 -0.43 -0.20

1.90 2.18 3.44 30.98 24.92 23.74

0.001688 0.001947 0.002927 0.014261 0.012223 0.011847

0.0 10.4 0.0 0.0 0.0 0.0

-25.00 -9.24 -26.15 38.20 71.52 33.36

18.47 -26.42 35.07 216.77 184.68 184.85

-1.67 -0.09 1.07 2.46 7.58 0.85


-4660.75 -2774.74 -703.99 -9529.89 -3152.27 3864.15

156.22 183.64 263.77 792.77 775.31 793.62

375.3 411.1 615.9 4871.0 3967.1 3584.8

0.35 0.21 0.06 0.71 0.24 -0.28

1.70 2.04 3.11 30.61 24.19 21.89

0.001471 0.001816 0.002723 0.015049 0.012492 0.011275

0.0 -56.96 0.0 -33.91 10.4 -5.38 0.0 -116.47 0.0 -38.53 0.0 47.23

17.99 19.71 -37.39 233.62 190.50 172.13

-1.04 -1.03 -0.04 -11.84 -2.44 2.72

3.89 -74.98 4.51 -53.65 1.52 -42.77 22.86 -350.39 19.83 -229.04 18.20 219.38

0.480 0.334 0.257 1.536 0.966 0.936


-1876.81 -3830.00 -5919.23 3287.87 -3354.38 -10445.87

176.84 198.40 255.29 888.94 801.30 724.51

395.9 499.9 688.1 4526.0 4291.3 4122.7

0.14 0.29 0.44 -0.24 0.25 0.78

1.93 2.14 2.95 31.12 26.45 23.08

0.001709 0.001790 0.002458 0.014285 0.013078 0.012172

0.0 -22.94 -18.91 0.0 -46.81 -23.97 0.0 -72.34 -33.01 0.0 40.18 -217.34 0.0 -41.00 -206.01 0.0 -127.66 -197.98

-1.95 -1.22 1.48 2.02 -5.25 0.60

4.30 -41.95 4.91 -70.81 6.50 -105.39 20.44 257.54 20.58 -247.07 20.79 -325.65

0.256 0.444 0.664 1.083 1.042 1.446

104P PL2 OPR1 OPR2 OPR3 STM1

-4773.04 -5510.91 -4560.62 -9635.55

159.44 164.94 249.15 793.07

384.3 420.3 641.6 4892.1

0.36 0.41 0.34 0.72

1.74 1.76 2.89 30.75

0.001498 0.001470 0.002458 0.015100

0.0 -58.33 -18.43 0.0 -67.35 -20.18 0.0 -55.74 30.72 0.0 -117.76 -234.65

-0.99 0.18 -2.29 -11.59

3.97 -76.79 4.13 -87.54 6.26 -86.55 22.92 -352.69

0.491 0.561 0.540 1.546



Training 2011

STM2 STM3

-12057.11 -8787.05

724.89 717.25

4315.2 3853.9

0.90 0.66

24.80 21.46

0.013054 0.011596

0.0 -147.36 -207.23 0.0 -107.39 184.87

-1.10 -8.78

21.56 -354.59 19.98 -292.47

1.583 1.292

… … PSI SAMPLE ANALYSIS

DATE 12-FEB-2011 * * *

PILE GRP JT

101P 102P 103P 104P

PL1 PL2 PL1 PL2

********* PILE ********* PILEHEAD WEIGHT PEN. O.D. THK. CM CM KN M 106.68 106.68 106.68 106.68

2.50 2.50 2.50 2.50

177.4 177.4 177.4 177.4

40.0 40.0 40.0 40.0

P I L E

M A X I M U M

A X I A L

C A P A C I T Y

************** COMPRESSION ************* CAPACITY MAX. CRITICAL CONDITION (INCL. WT) LOAD LOAD LOAD SAFETY KN KN KN CASE FACTOR -57792.1 -57772.9 -57792.1 -57772.9

-2139.6 -9529.9 -10445.9 -12057.1

-2139.6 -9529.9 -10445.9 -12057.1

OPR3 STM1 STM3 STM2

27.01 6.06 5.53 4.79

TIME 16:10:51 PSI PAGE

S U M M A R Y

* * *

**************** TENSION *************** CAPACITY MAX. CRITICAL CONDITION (INCL. WT) LOAD LOAD LOAD SAFETY KN KN KN CASE FACTOR 58144.3 58125.1 58144.3 58125.1

5852.4 3864.2 3287.9 0.0

480

5852.4 3864.2 3287.9 0.0

STM2 9.94 STM3 15.04 STM1 17.68 OPR1 100.00

*MAXIMUM* UNITY LOAD CHECK CASE 0.15 0.25 0.27 0.31

STM2 STM1 STM3 STM2

---------------------------------------------------------------------------------------------------------------


Part 4 -Spectral Fatigue Preparation 1) Under “Training Project”, create “Spectral Fatigue” subdirectory 2) Under “Spectral Fatigue”, Create “Foundation SE”, “Modes” and “Fatigue” subdirectories. 3) Copy SACINP.STA model file, SEAINP.STA Seastate file and PSIINP.DAT soil data from “\Spectral Earthquake\Static SE” directory to “Foundation SE” directory. 4) Copy SEAINP.DYN from “\Spectral Earthquake\Modes” directory to “Modes” directory Creating foundation superelement under “Foundation SE” directory, 1) Modifying Model file SACINP.STA for creating foundation superelement suitable for wave response analysis Live weight factor in weight combination MASS shall be modified from 0.75 to 1.0. 2) Modifying Seastate file SEAINP.STA for create foundation superelement suitable for wave response analysis Delete load conditions GRVX and GRVY; Add two new load conditions named as X000 and Y090, wave loads will be generated for 1.5 m wave height at 4.42 sec wave period for both 000 and 090 directions respectively. Stream function will be used for calculating wave force in 18 steps, maximum base shear will be selected for critical position. Weight selection lines INCWGT used to select weight groups ANOD and WKWY for possible wave forces. Delete load combination EQKS. Combine load combinations SUPX and SUPY with X000 and Y090 correspondingly. Modify LCSEL line to only include SUPX and SUPY load combinations. Part of Seastate input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------LDOPT NF+Z 1.025 LCSEL SUPX SUPY … LOAD LOADCNDEAD INCWGT ANODWKWY DEAD DEAD -Z LOADCNMASS INCWGT MASS ACCEL LOADCNX000 INCWGT ANODWKWY

7.85

-79.50

79.50

MN

NPNP

K

M

1.0

N CEN1

Spectral Fatigue - 1

WAVE WAVE STRE 1.5 4.42 LOADCNY090 INCWGT ANODWKWY WAVE WAVE STRE 1.5 4.42 LCOMB LCOMB SUPX DEAD 1.0MASS 1.0X000 LCOMB SUPY DEAD 1.0MASS 1.0Y090 END

0.00

D

0.00

20.0

18MS

0

90.00

D

0.00

20.0

18MS

0

1.0 1.0

-------------------------------------------------------------------------------------------------------------

3) Delete Title line of PSIINP.DAT, otherwise it will has problem in following fatigue analysis 4) Creating run file to generate foundation superelement using SUPX and SUPY. In “Analyis Options” > “Foundation” part, select “Create foundation superelement” and input SUPX and SUPY to 1st X and 1st Y load cases respectively, “Max load and deflections” will be used for pile head load/deflection option. No “Element Check” and “Postvue” database needed for this analysis. Run analysis.


Seastate basic load case summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------****** SEASTATE BASIC LOAD CASE SUMMARY ****** RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ DEAD LOAD BUOYANCY CASE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) (KN) (KN) 1 DEAD 0.000 0.000 -5732.595 -30.701 10816.892 0.000 8601.126 2868.558 2 MASS 0.000 0.000 -5493.467 -558.857 8180.357 0.000 0.000 0.000 3 X000 5.435 -0.047 0.984 4.054 445.994 7.828 0.000 0.000 4 Y090 -0.538 25.079 1.352 -1862.846 -43.587 -20.975 0.000 0.000 -------------------------------------------------------------------------------------------------------------------------------------

Seastate combined load case summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------***** SEASTATE COMBINED LOAD CASE SUMMARY ***** RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ CASE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) 5 SUPX 5.435 -0.047 -11225.078 -585.504 19443.244 7.828 6 SUPY -0.538 25.079 -11224.711 -2452.404 18953.664 -20.975 -------------------------------------------------------------------------------------------------------------------------------------

Pile head superelement created for joint 101P for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------*** PILEHEAD STIFFNESS FOR JOINT 101P *** FOR SUPERELEMENT NO. 1 RX RY RZ DX DY DZ RX 0.352555E+10 0.402477E+05 -0.402477E+04 0.329971E+02 0.122928E+08 -0.122928E+07 RY 0.402477E+05 0.349139E+10 -0.344714E+09 -0.122925E+08 -0.326704E+02 0.326704E+01 RZ -0.402477E+04 -0.344714E+09 0.787252E+08 0.122925E+07 0.326704E+01 -0.326704E+00 DX 0.329971E+02 -0.122925E+08 0.122925E+07 0.756676E+05 -0.864001E+00 0.864001E-01 DY 0.122928E+08 -0.326704E+02 0.326704E+01 -0.864001E+00 0.140090E+06 0.644293E+06 DZ -0.122928E+07 0.326704E+01 -0.326704E+00 0.864001E-01 0.644293E+06 0.651859E+07------------------------------------------------------------------------------------------------------------------------------------


Mode extraction under “Modes” directory, Create Dynapac run file “Extract Mode Shapes” Under “Analysis Options” > “Super Element”, select “Import Superelement” and browse in “Foundation SE” directory for DYNSEF.STA file. Under “Analysis Options” > “Mode Shape”, choose “Use Modal Extraction Options”; input 50 to “Number of Modes” and select “Create added mass of beams”. Choose “Seastate” options and create “Postvue” database. Browse in “Foundation SE” directory for SACINP.STA when prompted for “Model Data file”. Run Analysis.


Dynpac weight summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------************* WEIGHT AND CENTER OF GRAVITY SUMMARY ************* ************ ITEM DESCRIPTION ************

************** WEIGHT ************** X Y Z KN KN KN

PLATE ELEMENTS

******** CENTER OF GRAVITY ******** X Y Z M M M

387.938

387.938

387.938

1.429

0.000

19.699

MEMBER ELEMENTS

7862.998

7862.998

7862.998

2.224

0.041

-36.117

MEMBER ELEMENT NORMAL ADDED MASS

4571.818

4521.894

1490.585

2.360

0.035

-58.247

FLOODED MEMBER ELEMENT ENTRAPPED FLUID

2533.615

2533.615

2533.615

2.199

0.000

-39.503

USER DEFINED WEIGHTS IN DYNPAC

5949.223

5949.223

5949.223

1.558

0.073

17.443

************ TOTAL ************ 21305.593 21255.669 18224.359 2.050 0.043 -19.725------------------------------------------------------------------------------------------------------------------------------------

Dynpac first 10 modal periods and frequencies report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------SACS IV-FREQUENCIES AND GENERALIZED MASS MODE FREQ.(CPS) GEN. MASS EIGENVALUE PERIOD(SECS) 1

0.299659

7.5884544E+02

2.8208911E-01

3.3371294

2

0.325174

4.5107095E+02

2.3955616E-01

3.0752721

3

0.484080

4.1971794E+02

1.0809529E-01

2.0657762

4

0.724977

1.3777346E+03

4.8193895E-02

1.3793545

5

0.750688

1.2421094E+03

4.4949180E-02

1.3321121

6

0.952139

2.0253514E+03

2.7940825E-02

1.0502664

7

1.501109

7.7224431E+02

1.1241287E-02

0.6661743

8

1.525820

7.6236660E+02

1.0880119E-02

0.6553853

9

1.920944

2.0709272E+02

6.8645310E-03

0.5205774

10 1.966917 1.3535570E+02 6.5473900E-03 0.5084099 -------------------------------------------------------------------------------------------------------------------------------------


Wave Response analysis under “Fatigue” directory, 1) Create Seastate input file SEAINP.000, SEAINP.045 and SEAINP.090 for Transfer function generation Copy SEAINP.DYN Seastate file from “Modes” directory and rename to SEAINP.000. Input DYN analysis option in col.56-58 for generating loading and hydrodynamic modeling for dynamics. Input title line as “000 DIRECTION TRANSFER FUNCTION”. Four load cases 1 through 4 will be added, each load case contain one line of GNTRF transfer function generation line. For fist load case in 000 direction: 6 waves in 18 steps will be generated using wave steepness 0.05; beginning wave period 10 seconds and period step size 1.00 seconds; transfer function loading will be generated for each wave position and AIRY wave theory will be selected. Base shear and overturning moment will be plotted For second load case in 000 direction, 6 waves with starting period = 4.75 secs and period step size = 0.25 secs. For third load case in 000 direction, 11 waves with starting period = 3.40 secs and period step size = 0.10 secs. For fourth load case in 000 direction, 2 waves with starting period = 2.25 secs and period step size = 0.25 secs. Copy SEAINP.000 Seastate file to SEAINP.045 and SEAINP.090. Modify GNTRF directions to 45.00 for SEAINP.045 and to 90.00 for SEAINP.090. Part of Seastate input file defined for 000 direction shall looks like following: ------------------------------------------------------------------------------------------------------------LDOPT NF+Z 1.025 7.85 000 DIRECTION TRANSFER FUNCTION FILE S … LOAD LOADCN 1 GNTRF AL 6 0.05 10.00 1.00 LOADCN 2 GNTRF AL 6 0.05 4.75 0.25 LOADCN 3 GNTRF AL 11 0.05 3.40 0.10 LOADCN 4 GNTRF AL 2 0.05 2.25 0.25 END

-79.50

79.50

MN DYN

NPNP

K

0.00 18AIRYPF 0.00 18AIRYPF 0.00 18AIRYPF 0.00 18AIRYPF

-------------------------------------------------------------------------------------------------------------


2) Create wave response input file WVRINP.PLT for transfer function plot For Wave Response Options, select “ALL” to Load case selection, choose “Generate Plots”, maximum allowable iterations = -1. Use Transfer function plot line PLTTF to request Overturning moment and Base shear plot for both period and frequency. 1 to 25 load case selected for transfer function load case TFLCAS. Damping ratio for spectral fatigue use 2% for all modes. Wave response plot input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------WROPT MNPSL ALL PLTTF TFLCAS 1 25 DAMP 2.0 END

-1 OM BS

PFS

------------------------------------------------------------------------------------------------------------3) Create wave response run file and creating transfer function plot for 000 direction Under “Analysis Options” > “Wave Response”, make sure WVRINP.PLT is in Wave Response input file filed. Under “Analysis Options” > “Seastate”, check “Execute Seastate” and “Seastate file not in model file” and browse for SEAINP.000. Browse to “Foundation SE” directory for model data file SACINP.STA, and browse to “Modes” directory for mode and mass file. Run the analysis and study the generated plots. 4) Creating wave response input file WVRINP.EQS for equivalent loads generation Copy WVRINP.PLT to WVRINP.EQS, in wave options line, select “ES – Equivalent Static Loads”. Wave response input file for equivalent loads defined shall looks like following: ------------------------------------------------------------------------------------------------------------WROPT MNPSL ALL ES PLTTF TFLCAS 1 25 DAMP 2.0 END

-1 OM BS

PFS

-------------------------------------------------------------------------------------------------------------


5) Creating and solving equivalent loads for 000 direction Under “Analysis Options” > “Wave Response”, browse for “WVRINP.EQS”. Under “Analysis Options” > “Seastate”, select “Execute Seastate” and check “Seastate input not in model file”, make sure SEAINP.000 appears in the Seastate input file window. Start Wizard begin generating wave response run file. When “Analysis Options” reappears, under “Wave Response” window, select “Solving equivalent static loads automatically”. Then under “Foundation”, check “Use nonlinear foundation” and browse to “Foundation SE” directory for PSIINP.DAT file. Choose “Create pile fatigue solution file” for Pile Fatigue Solution File Option. Browse to “Foundation SE” for model data file SACINP.STA. Browse to “Modes” for mode and mass file. Run Analysis. 6) Use the same procedure as 5) and solving equivalent loads for 045 and 090 directions. 7) Create fatigue input file FTGINP.FTG for spectral fatigue analysis For fatigue options, Number of Additional Postfiles = 2 Design life = 20 yrs Fatigue Time Period = 1.0 yrs Check “Skip Non-Tubular Elements”, “Use Load Case Dependent SCF’s”, “Prescribe Max SCF” and “Prescribe MIN SCF” Choose API X prime curve for S-N Curve and Efthymiou method EFT for SCF calculation For fatigue option 2 line, check “Member Summ. Rep. (Life Order)” and “SCF Validity Range Check”. Using joint override lines JNTOVR to define that joints 401L, 403L, 405L and 407L will be checked using API X curve rather than X prime curve. Using group selection line GRPSEL to remove member groups PL1, PL2, PL3, PL4 and W.B from fatigue calculation. Using joint selection JSLC line to define only joints 201L, 203L, 205L, 207L, 301L, 303L, 305L, 307L, 401L, 403L, 405L and 407L will be included for fatigue damage evaluations.


Using SCF limits line SCFLM to define max. SCF = 6.0 and min. SCF = 1.5. SCF Selection line SCFSEL can be used to define for X type joints, Marshall method MSH will be used for SCF calculation. Add a RELIEF to force the program to evaluate the member hot spot stress at the surface of chord. SEAS line will be used to signal the program to read the Seastate input data file to determine the SACS load case to wave period and direction correlation. Input first fatigue load case corresponding to direction 000 Using Spectral Wave Fatigue Case FTLOAD to input Fraction of Design Life = 0.47 for 000 direction; input “SPC” into column 32-34 for spectral fatigue case. Using Scatter Diagram Header SCATD to select Pierson-Moskowitz Spectrum as type of wave spectrum. Using Scatter Diagram Wave height SCWAV to input sea states wave heights and using Scatter Diagram Freq. of Occurrence SCPER line to input Frequency of Occurrence per wave period. Percent occurrence for various wave heights and wave periods for 000 direction:

Dominant Period (SECS)

Significant Wave Height (M) 0.0 - 0.6

0.6 – 1.4

1.4 – 2.6

1.0 – 2.0

0.15

0.10

0.10

2.0 – 4.0

0.10

0.19

0.11

4.0 – 6.0

0.05

0.08

0.05

6.0 – 10.0

0.02

0.03

0.02

Input second fatigue load case corresponding to direction 045 Using Spectral Wave Fatigue Case FTLOAD to input Fraction of Design Life = 0.2 for 045 direction; input “SPC” into column 32-34 for spectral fatigue case. Percent occurrence for various wave heights and wave periods for 045 direction:




0.6 – 1.4

1.4 – 2.6

1.0 – 2.0

0.10

0.13

0.08

2.0 – 4.0

0.15

0.13

0.10

4.0 – 6.0

0.08

0.08

0.07

6.0 – 10.0

0.03

0.02

0.03

Input third fatigue load case corresponding to direction 090 Using Spectral Wave Fatigue Case FTLOAD to input Fraction of Design Life = 0.33 for 090 direction; input “SPC” into column 32-34 for spectral fatigue case. Percent occurrence for various wave heights and wave periods for 090 direction:



0.6 – 1.4

1.4 – 2.6

1.0 – 2.0

0.13

0.10

0.08

2.0 – 4.0

0.13

0.15

0.10

4.0 – 6.0

0.06

0.09

0.08

6.0 – 10.0

0.03

0.03

0.02

Using Joint Extraction Head EXTRAC line to extract all joints with damage level greater than 0.5 for Interactive Fatigue review. Fatigue input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------FATGIUE INPUT FTOPT 2 20. FTOPT2 PTVC JNTOVR 401L API JNTOVR 403L API

1.0

2.

SMAPP

MXMNSK

LPEFT


JNTOVR 405L API JNTOVR 407L API GRPSEL RM PL1 PL2 PL3 PL4 W.B JSLC 201L203L205L207L301L303L305L307L401L403L405L407L SCFLM 6.0 1.5 SCFSEL MSH RELIEF SEAS FTLOAD 1 .47 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .15 .1 .1 SCPER 3.0 .1 .19 .11 SCPER 5.0 .05 .08 .05 SCPER 8.0 .02 .03 .02 FTLOAD 2 .20 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .10 .13 .08 SCPER 3.0 .15 .13 .10 SCPER 5.0 .08 .08 .07 SCPER 8.0 .03 .02 .03 FTLOAD 3 .33 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .13 .10 .08 SCPER 3.0 .13 .15 .10 SCPER 5.0 .06 .09 .08 SCPER 8.0 .03 .03 .02 EXTRAC HEAD AE 0.5 END

------------------------------------------------------------------------------------------------------------8) Create fatigue run file and run the analysis. Browse for results and using interactive fatigue to review critical joints.


Portion of spectral fatigue analysis report for joint 407L and 403L: ----------------------------------------------------------------------------------------------------------------------------------*

JOINT

MEMBER GRUP TYPE ID ID

*

*

ORIGINAL OD WT (CM) (CM)

M E M B E R

JNT MEM TYP TYP

F A T I G U E (DAMAGE ORDER)

R E P O R T

*

*

CHORD LEN. (M )

GAP * STRESS CONC. FACTORS * (CM) AX-CR AX-SD IN-PL OU-PL 0.00

407L 403L-407L H41

TUB

32.38

1.250 Y

BRC

12.12

407L 407L-507L LG4

TUB

107.00

3.500 Y

CHD

12.12

407L 405L-407L H41

TUB

32.38

1.250 Y

BRC

12.12

407L 407L-507L LG4

TUB

107.00

3.500 Y

CHD

12.12

407L 407L-4000 H42

TUB

32.38

1.250 Y

BRC

12.12

407L 407L-507L LG4

TUB

107.00

3.500 Y

CHD

12.12

0.00

0.00

*

FATIGUE RESULTS DAMAGE LOC SVC LIFE

3.00

6.00

2.35

3.53

5.271789

BL

3.793778

2.53

4.74

1.59

2.74

1.382290

BL

14.46874

3.00

6.00

2.35

3.53

1.882799

BR

10.62249

2.53

4.74

1.59

2.74

.4480346

BR

44.63941

3.00

6.00

2.35

3.51

.5309010

BR

37.67181

2.53

4.71

1.58

2.72

.1215998

BR

164.4740

REQUIRED OD WT (CM) (CM)

---------------------------------------------------------------------------------------------------------------------------------403L 307L-403L D03

TUB

40.75

1.500 K

BRC

12.12

403L 303L-403L LG3

TUB

107.00

3.500 K

CHD

12.12

403L 401L-403L H41

TUB

32.38

1.250 Y

BRC

12.12

403L 403L-503L LG4

TUB

107.00

3.500 Y

CHD

12.12

403L 403L-407L H41

TUB

32.38

1.250 K

BRC

12.12

403L 403L-503L LG4

TUB

107.00

3.500 K

CHD

12.12

403L 403L-4000 H42

TUB

32.38

1.250 Y

BRC

12.12

30.96

0.00

30.96

0.00

2.68

2.62

2.78

2.09

.3926162

T

50.94033

2.69

2.74

1.50

1.86

.1846078

TL

108.3378

3.00

6.00

2.35

3.53

1.836187

BL

10.89213

2.53

4.74

1.59

2.74

.4494944

BL

44.49443

3.93

5.25

2.35

3.57

5.087764

TL

3.931000

3.33

4.29

1.59

2.77

1.428185

TL

14.00379

3.00

6.00

2.35

3.51

.1326569

BL

150.7648

403L 403L-503L LG4 TUB 107.00 3.500 Y CHD 12.12 2.53 4.71 1.58 2.72 .0221272 BL 903.8660 -------------------------------------------------------------------------------------------------------------------------------------


9) Foundation pile fatigue analysis Copy FTGINP.FTG to FTGINP.PIL, delete unrelated lines for pile fatigue analysis. JNTOVR, GRPSEL, JSLC, SCFSEL, RELIEF and EXTRAC line(s) will be deleted. Modify fatigue option line 2 and check “Tubular Inline Check”, chose American Welding Society S-N curve AWS for pile fatigue analysis. Modifying SCF limits line, Max. SCF =1.5 and Min. SCF = 1.0. Pile Fatigue input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------FOUNDATION PILE FATIGUE INPUT FTOPT 2 20. 1.0 2. SMAPP FTOPT2 PTVC SCFLM 1.5 1.0 SEAS FTLOAD 1 .47 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .15 .1 .1 SCPER 3.0 .1 .19 .11 SCPER 5.0 .05 .08 .05 SCPER 8.0 .02 .03 .02 FTLOAD 2 .20 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .10 .13 .08 SCPER 3.0 .15 .13 .10 SCPER 5.0 .08 .08 .07 SCPER 8.0 .03 .02 .03 FTLOAD 3 .33 1.0 SPC SCATD D 1.0 1.0 PM SCWAV 0.30 1.0 2.0 SCPER 1.5 .13 .10 .08 SCPER 3.0 .13 .15 .10 SCPER 5.0 .06 .09 .08 SCPER 8.0 .03 .03 .02 END

MXMNSK

LPEFT AWS

TI2

------------------------------------------------------------------------------------------------------------Create fatigue run file and run the analysis. Browse for results.


Portion of spectral fatigue analysis report for pile: ----------------------------------------------------------------------------------------------------------------------------------* * * M E M B E R F A T I G U E R E P O R T * * * (DAMAGE ORDER)

MEMBER GRUP TYPE ID ID

ORIGINAL OD WT (CM) (CM)

27

26-

27 PL1

TUB

91.50

2.500

1.50

1.50

1.50

1.50

.0181906

B

1099.470

27

27-

28 PL1

TUB

91.50

1.500

1.50

1.50

1.50

1.50

.2091573

B

95.62182

JOINT

JNT MEM TYP TYP

CHORD LEN. (M )

GAP * STRESS CONC. FACTORS * (CM) AX-CR AX-SD IN-PL OU-PL

FATIGUE RESULTS DAMAGE LOC SVC LIFE

REQUIRED OD WT (CM) (CM)

---------------------------------------------------------------------------------------------------------------------------------427

426- 427 PL1

TUB

91.50

2.500

1.50

1.50

1.50

1.50

.0125490

T

1593.750

427

427- 428 PL1

TUB

91.50

1.500

1.50

1.50

1.50

1.50

.1938635

T

103.1654

---------------------------------------------------------------------------------------------------------------------------------227

226- 227 PL2

TUB

91.50

2.500

1.50

1.50

1.50

1.50

.0115914

TL

1725.423

227

227- 228 PL2

TUB

91.50

1.500

1.50

1.50

1.50

1.50

.1679323

TL

119.0956

---------------------------------------------------------------------------------------------------------------------------------627

626- 627 PL2

TUB

91.50

2.500

1.50

1.50

1.50

1.50

.0113825

BL

1757.088

627

627- 628 PL2

TUB

91.50

1.500

1.50

1.50

1.50

1.50

.1649358

BL

121.2593

---------------------------------------------------------------------------------------------------------------------------------1

1-

2 PL1

TUB

91.50

2.500

1.50

1.50

1.50

1.50

.1222017

T

163.6638

---------------------------------------------------------------------------------------------------------------------------------401

401- 402 PL1

TUB

91.50

2.500

1.50

1.50

1.50

1.50

.1148917

B

174.0770

---------------------------------------------------------------------------------------------------------------------------------601 601- 602 PL2 TUB 91.50 2.500 1.50 1.50 1.50 1.50 .1075311 TR 185.9927 -----------------------------------------------------------------------------------------------------------------------------------



Training 2011

Wave Spectrum Fatigue Analysis Get ready 1. Under “Training Project” create a “Spectral Fatigue” subdirectory 2. Under “Spectral Fatigue” create “Foundation SE”, “Modes”, “Fatigue” and “Deterministic” subdirectories. 3. Copy the Seastate file SEAINP.DAT and soil data PSIINP.DAT from “\Static PSI” directory to “Spectrum Fatigue\Foundation SE” directory. 4. Copy SEAINP.DAT from “\Static PSI” directory to “Spectrum Fatigue\Modes” directory 5. Copy the model file SACINP.DAT from “\Static PSI” directory to “Spectrum Fatigue\” directory 6. Set current directory to “\Spectrum Fatigue”. Section 1

Create pile head super element

Step 1 Check the model 1. Check if the weight combination MASS has been created. If not create the weight combination MASS with the basic weight groups MISC, EQPT, AREA, and LIVE. The weight factors should be 1.0 2. If the weight combination MASS already exists, check the weight factor for LIVE. If it is not 1.0 change it to 1.0. Step 2 Create the Seastate input file 1. 2. 3. 4. 5.

Change current directory to “Spectrum Fatigue\Foundation SE” Delete existing load cases and combinations. Remove HYDRO and HYDRO2 lines if they exist in the file. Remove AMOD lines if they exist in the file. Modify the CDM line for the Cd and Cm values for a fatigue condition. Cm=2.0, Cd=0.5 for clean member and Cd=0.8 for fouled member as per API RP 2A. 6. Create a DEAD load case and include weight group MASS. Datagen program can be used to create the load case. Remove water depth and mud line overrides if they exist. 7. Create two wave load conditions named X000 and Y090. Wave loads will be generated for a one year wave condition. Wave height=6.1m and period=12.0s for both 000 and 090 directions. Stream function can be used for calculating wave force in 18 steps, Wave step size is 20. Maximum base shear will be selected for the critical position. Weight selection lines INCWGT are used to select weight groups ANOD and WKWY for possible wave forces. Remove water depth and mud line overrides if they exist. 8. The wave condition used to create the pile head super element needs to be studied based on the soil data and different approaches can be used to determine this wave condition.

Wave Spectrum Fatigue Analysis ‐ 1


Training 2011

9. Create two load combinations SUPX and SUPY with X000 and Y090 plus the DEAD load case correspondingly. 10. Modify LCSEL line to only include SUPX and SUPY load combinations. 11. Check LDOPT line to confirm the water depth and mud line elevation is 79.5m and -79.5m respectively. Seastate input file defined should look like following: ------------------------------------------------------------------------------------------------------------LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN LCSEL ST SUPX SUPY FILE B CENTER CEN1 CDM CDM 2.50 0.500 2.000 0.800 2.000 CDM 250.00 0.500 2.000 0.800 2.000 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 GRPOVAL LG2 1.501.501.501.50 GRPOVAL LG3 1.501.501.501.50 GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNF 0.001 0.001 0.001 0.001 0.001 LOAD LOADCNDEAD DEAD DEAD -Z M INCWGT MASS LOADCNX000 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 12.00 0.00 D 20.00 18MS10 1 LOADCNY090 INCWGT ANODWKWY WAVE WAVE1.00STRE 6.10 12.00 90.00 D 20.00 18MS10 1 LCOMB LCOMB SUPX X000 1.0DEAD 1.0 LCOMB SUPY Y090 1.0DEAD 1.0 END

F F F

Step 3 Check the PSI input file 1. Delete Title line of PSIINP.DAT, otherwise it will create a warning message in following fatigue analysis Step 4 Create the run file 1: Select analysis type 1. Analysis type: Static 2. Analysis subtype: Create Pilehead Super Element



Training 2011

3. The picture below shows the window after the analysis type is selected. Please check the default File ID and if it is not “dat” change it to “dat”.

Step 5 Create the run file 2: Set Environmental Load Option 1. 2. 3. 4.

Check on “Edit Environmental Loading Options” and click to change the options Change “Seastate Input in Model file” to “No” Pick the seainp.dat file in “Seastate Input File” field See below picture for the window after options are defined. Click “OK” to save the options.



Training 2011

Step 6 Create the run file 3: Set PSI option 1. Click “Edit Foundation Options” to define the analysis options for the pile head super element creation: 2. Pick PSIINP.DAT file from “PSI Input File” field 3. Change “Foundation Superelement Option” to “Override - Create Pilehead SE” 4. Enter SUPX and SUPY to 1st X and 1st Y load cases respectively 5. Change “Pilehead Load/Defl. Option” to “Max load and deflection” 6. Keep other options unchanged 7. See below picture for the windows after the options are defined. Click “OK” to save the options.

Step 7 Select the input file(s) and run the analysis 1. Pick the model file SACINP.DAT in “Input File” field and Click-on “Run Analysis” to run the analysis. This analysis will create the dynsef.dat file and this is the pile head super element file needed for dynamic characteristic analysis. 2. See below picture for the Analysis Generator Window after the options are defined.



Training 2011

3. Click-on “Run Analysis” to run the analysis and check the results. The summary of results are shown below



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Seastate basic load case summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------****** SEASTATE BASIC LOAD CASE SUMMARY ****** RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ DEAD LOAD BUOYANCY CASE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) (KN) (KN) 1 DEAD 0.00 0.00 -14152.06 775.7 18193.3 0.0 19072.53 4920.50 2 X000 810.03 -0.01 45.32 -0.7 41702.7 0.2 0.00 0.00 3 Y090 -11.69 775.75 -9.40 -42153.5 -595.7 339.6 0.00 0.00 -------------------------------------------------------------------------------------------------------------------------------------

Seastate combined load case summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------***** SEASTATE COMBINED LOAD CASE SUMMARY ***** RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ CASE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) 4 SUPX 810.03 -0.01 -14106.73 775.0 59896.0 0.2 5 SUPY -11.69 775.75 -14161.46 -41377.9 17597.6 339.6 -------------------------------------------------------------------------------------------------------------------------------------

Pile head superelement created for joint 101P for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------*** PILEHEAD STIFFNESS FOR JOINT 101P *** UNITS - (KN,M) FOR SUPERELEMENT NO. 1 RX RY RZ DX DY DZ RX 0.569326E+06 -0.177850E+03 0.177850E+02 0.165965E+02 0.704705E+05 -0.704705E+04 RY -0.177850E+03 0.570662E+06 -0.565662E+05 -0.711165E+05 -0.164322E+02 0.164322E+01 RZ 0.177850E+02 -0.565662E+05 0.106566E+05 0.711165E+04 0.164322E+01 -0.164322E+00 DX 0.165965E+02 -0.711165E+05 0.711165E+04 0.154291E+05 0.298660E+01 -0.298660E+00 DY 0.704705E+05 -0.164322E+02 0.164322E+01 0.298660E+01 0.285186E+05 0.132068E+06 DZ -0.704705E+04 0.164322E+01 -0.164322E+00 -0.298660E+00 0.132068E+06 0.133600E+07 -------------------------------------------------------------------------------------------------------------------------------------



Section 2

Training 2011

Create the mode shape and mass files

Change the current directory to “Spectrum Fatigue\Modes” Step 1 Modify the seainp.dat file for dynamic characteristic analysis 1. Remove LCSEL lines 2. Remove AMOD lines 3. Remove HYDRO/HYDRO2 lines 4. Remove all the load cases and combinations 5. Change Cd/Cm value for fatigue condition 6. Create Dynpac run file “Extract Mode Shapes” 7. Add DYNMAS line to include weight combination MASS 8. “Save As” the file to Seainp.dyn and file should look like following: ------------------------------------------------------------------------------------------------------------LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN FILE B CENTER CEN1 CDM CDM 2.50 0.500 1.200 0.800 1.200 CDM 250.00 0.500 1.200 0.800 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 GRPOVAL LG2 1.501.501.501.50 GRPOVAL LG3 1.501.501.501.50 GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNN 0.001 0.001 0.001 0.001 0.001 DYNMAS MASS LOAD END

F F F

-----------------------------------------------------------------------------------------------------------Step 2 Create the Dynpac input file (Use Datagen program) 1. In DYNOPT line select the following options: a. Number of modes: 50 b. Mass calculation option: CONS c. Added mass coefficient: 1.0 d. Leave other options default 2. In DYNOP2 line select the following weight contingency factors: a. Dynpac calculated structural mass: 1.0 b. SACS load mass: 1.0 (This doesn’t apply to this training model) c. SACS IV included weight mass: 1.0



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3. Below is the content of this input file 4. Save as dyninp.dyn ---------------------------------------------------------------------------------------------------------------------DYNOPT +ZMN 50CONS7.84905 DYNOP2 1.0 1.0 1.0 END

1.0

+X

Step 3 Select the Retained Degrees of Freedoms 1. Change the directory to \Spectrum Fatigue and open SACINP.DAT file with Precede to define the retained DOFs for each Plan: 2. Plan at -79.5: Retain X, Y, and Z translational DOF to joints 101L, 102L, 103L, 104L 1100, 1101, 1102, 1103, and 1104. The joint fixity of “2” means retained degree of freedom. Go to Joint/Fixities and select the above joints, then set new fixity to “222”. 3. Repeat the same pattern to the Plan at -50.0, -21.0, and 2.0. 4. Plan at 15.3: Select joints 71BD, 7104, 71ED, 701L, 702L, 703L, 704L, 74BD, and 74ED. Set the joint fixities to “222” 5. Plan at 23.0: Set joint fixities “222” for 801L, 802L, 803L, 804L, 81BD, 81FD, 84FD, and 84BD. 6. Save the model file after user has defined the retained degree of freedoms. Step 4 Run the analysis 1: Select analysis type 1. 2. 3. 4.

Change current directory to \Spectrum Fatigue\Modes Change File ID to “dyn” Analysis type: Dynamic Analysis Subtype: Extract Mode Shapes

Step 5 Run the analysis 2: Select environmental load option 1. 2. 3. 4.

Check “Edit Environmental Loading Options” and set the options Set “Seastate Input File In Model File” to “No” In “Seastate Input File” field pick Seainp.dyn Leave other options unchanged and click-on “OK”. See picture below for details.



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Step 6 Run analysis 3: Select Solve option to pick up pile head super element 1. Click “Edit Solve Options” to define analysis options 2. Change “Include Super element file” to “Yes” 3. In “Super element file” field pick pile heads super element file: this file is created in last Section and should be located in \Spectrum Fatigue\Foundation SE folder. 4. Leave other options unchanged and click-on “OK”. 5. See picture below.

Step 7 Run the analysis 4: Select Modal Extraction Options 1. Click on “Edit Modal Extraction Options” to define the options for dynpac 2. Option 1: Use dynpac input file



Training 2011

a. Make sure “Use Dynpac Input file” option is “Yes” b. In “Dynpac Input File” filed pick the dyninp.dyn . c. See picture below.

3. Option 2: User Analysis Options: a. Change “Use Dynpac Input File” option to “No” b. Number of Modes: 50 c. Leave other options unchanged and click on “OK”. d. See picture below.

Step 8 Run the analysis 5: Select Graphical output options 1. 2. 3. 4.

Check on “Graphical Post Processing” to create the Postvue database “Include Only Joint Displacements”: Yes “Use OCI File as Model Input”: No Click on “OK” when finished. Wave Spectrum Fatigue Analysis ‐ 10


Training 2011

5. See picture below.

Step 9 Run the analysis 7: Select the model file and run the analysis 1. In “SACS Model File” field pick SACINP.DAT file. This file is located in “\Spectrum Fatigue” folder. 2. See picture below for details.

3. Click “Run Analysis” to run the analysis Step 10 Check the results 1. Open Dynlst.dyn file to check the results. The summary is listed below. 2. Double click-on PSVDB.DYN folder to open the Postvue database. Go to Display/Shape to view mode shapes graphically.



Training 2011

Dynpac weight summary report for spectral fatigue: ----------------------------------------------------------------------------------------------------------------------------------************* WEIGHT AND CENTER OF GRAVITY SUMMARY *************

************ ITEM DESCRIPTION ************

MEMBER ELEMENTS

************** WEIGHT ************** X Y Z KN KN KN

******** CENTER OF GRAVITY ******** X Y Z M M M

13578.944

13578.944

13578.944

1.087

0.000

-33.155

MEMBER ELEMENT NORMAL ADDED MASS

8419.222

8348.488

2259.828

1.133

0.000

-54.331

FLOODED MEMBER ELEMENT ENTRAPPED FLUID

4599.347

4599.347

4599.347

0.615

0.000

-39.497

USER DEFINED WEIGHTS IN DYNPAC

5493.467

5493.467

5493.467

2.443

-0.159

22.121

************ TOTAL ************

32090.982

32020.248

25931.588

1.263

-0.027

-24.415

-------------------------------------------------------------------------------------------------------------------------------------

Dynpac first 10 modal periods and frequencies report for spectral fatigue: -----------------------------------------------------------------------------------------------------------------------------------

MODE

SACS IV-FREQUENCIES AND GENERALIZED MASS FREQ.(CPS) GEN. MASS EIGENVALUE

PERIOD(SECS)

1

0.352114

9.5746704E+02

2.0430291E-01

2.8399923

2

0.410511

6.2565794E+02

1.5031129E-01

2.4359910

3

0.650231

3.7429304E+02

5.9910775E-02

1.5379151

4

0.735942

1.1201922E+03

4.6768468E-02

1.3588029

5

0.792096

4.9581463E+02

4.0372434E-02

1.2624737

6

0.986930

1.7274040E+03

2.6005616E-02

1.0132426

7

1.261089

2.7730833E+02

1.5927539E-02

0.7929654

8

1.500726

1.0164156E+03

1.1247012E-02

0.6663440

9

1.523800

1.0451648E+03

1.0908982E-02

0.6562540

10

1.726985

1.0234576E+02

8.4930414E-03

0.5790439

-------------------------------------------------------------------------------------------------------------------------------------



Section 3

Training 2011

Deterministic wave fatigue

Change current folder to “\Deterministic” and copy Seainp.dyn from “\Modes” directory to current directory. Assume the occurrences of wave condition for the fatigue per year are in below table, the occurrences are same for 0, 45 and 90 degree directions. 2.5m 60000 20000

3.5s 5.0s

3.5m 20000 5000

Step 1 Create Seastate input file 1. Open Seainp.dyn with Datagen and remove DYNMAS line. 2. Change “B” option in FILE line to “S” 3. Create wave load cases using the data in the table starts from LOADCN 1 a. Use “AIRY” wave theory b. Wave step size is 20.o degree c. Dynamic and static steps are 18 d. Critical position is “AL” 4. Total 12 load cases should be created for all three directions, See below the sample of created input file. ------------------------------------------------------------------------------------------------------------------LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN FILE S CENTER CEN1 CDM CDM 2.50 0.500 1.200 0.800 1.200 CDM 250.00 0.500 1.200 0.800 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 F GRPOVAL LG2 1.501.501.501.50 F GRPOVAL LG3 1.501.501.501.50 F GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNN 0.001 0.001 0.001 0.001 0.001 LOAD LOADCN 1 WAVE WAVE 1.0AIRY 2.5 3.5 D 20.01818AL10 1 0 LOADCN 2 WAVE WAVE 1.0AIRY 2.5 3.5 D 20.01818AL10 1 0 LOADCN 3 WAVE WAVE 1.0AIRY 3.5 5.0 D 20.01818AL10 1 0 LOADCN 4


Engineering Dynamics, Inc. WAVE WAVE 1.0AIRY LOADCN 5 WAVE WAVE 1.0AIRY LOADCN 6 WAVE WAVE 1.0AIRY LOADCN 7 WAVE WAVE 1.0AIRY LOADCN 8 WAVE WAVE 1.0AIRY LOADCN 9 WAVE WAVE 1.0AIRY LOADCN 10 WAVE WAVE 1.0AIRY LOADCN 11 WAVE WAVE 1.0AIRY LOADCN 12 WAVE WAVE 1.0AIRY END

3.5

5.0

2.5

3.5

2.5

Training 2011

D

20.01818AL10 1 0

45.0

D

20.01818AL10 1 0

3.5

45.0

D

20.01818AL10 1 0

3.5

5.0

45.0

D

20.01818AL10 1 0

3.5

5.0

45.0

D

20.01818AL10 1 0

2.5

3.5

90.0

D

20.01818AL10 1 0

2.5

3.5

90.0

D

20.01818AL10 1 0

3.5

5.0

90.0

D

20.01818AL10 1 0

3.5

5.0

90.0

D

20.01818AL10 1 0

Step 2 Create wave response input file Launch Datagen program and create a new input file. Set the unit to “Metric-Forces in kN” Click-on Dynamic and select Wave response program, see below picture for detail

1. Click-on “Select” to define the wave response analysis options as following: a. Unit selection: MN b. Loas case selection: ALL c. Generate Plots d. Number of modes: 20 e. Maximum allowable iteration: -1 f. Equivalent Static load option: ES g. Leave other unchanged, see below picture for details



Training 2011

2. Click-on “Next” to select plot option,

3. Click-on “Yes” to select the options: a. Select “Both” to Base Shear Plot b. Select “Both” to Overturning Moment Plot



Training 2011

4. Click-on “Next” and select “No” to “Plot Transfer Function/Response Function” to get to the window below

5. Click-on “Yes” to define modal damping ratio a. Enter 2.0 for overall modal damping ratio

6. Click-on “Next” and select “No” to modal selection, the input file created should look like below: -------------------------------------------------------------------------------------------------------------------WROPT PSEL DAMP END

MNPSL

ALL ES

20 OMBBSB

-1 27.9421.59 .254

2.0

Save As the file to WVRINP.DYN Step 3 Run wave response 1: Select analysis type Go to Analysis Generator and change File ID to “dyn” Analysis type: Dynamic Subtype: Deterministic Wave/Transfer Function Generation



Training 2011

Step 4 Run wave response 2: Edit Environmental Loading Change “Seastate input in model file” to No Select seainp.dyn to “Seastate input file” filed Leave other option unchanged to get below window Click-on “OK” when finish the option

Step 5 Run wave response 3: Edit wave response option Change “Use Wave Response Input File” to “Yes” Select wvrinp.dyn to “Wave response input file” filed”, see below picture for details.



Training 2011

Step 6 Run wave response 4: select input files Check-on “Solve” and “Foundation” in Analysis Options window Pick model file from “\Spectrum Fatigue” folder Pick the mode shape and mass file from “\Spectrum Fatigue\modes” folder Pick the PSI input file from “\Spectrum Fatigue\Foundation SE” folder See below picture to the details after the option selections, click-on “Run Analysis” to run.

Step 7 Check results a. Check response in graphics



Training 2011

Right Click-on wvrnpf.dyn file and open with Prevue, the significant dynamic effect can be noticed; check the dynamic effect from different waves and directions. This gives better idea why dynamic wave response analysis is important to fatigue analysis.

b. Check listing file Step 8 Create fatigue input file 1: Select fatigue analysis options 1. Launch Datagen program to create a new input file, set Unit to “Metric-Force in kN”, select “Post” icon and then select Fatigue program; see below picture for details:

2. Click-on “Select” and then select “No” to Title, the below window will show up:



Training 2011

3. Select “Direct deterministic fatigue” and click-on “Next>” to define fatigue analysis options: Number of additional Postfiles (SCF): blank Design life: 25 years Safety factor: 5.0 (This is a default value) Fatigue time period: 1 year Source of S-N curve: WJT (API 21th edition supplement 2), this will be the default curve SCF option: EFT (Efthymiou formulas) Select “Use load case dependent SCFs” Check-on MAX SCF and MIN SCF options See below picture for details

4. Click-on “Next>” to continue the options: Check-on Member Summary Reports and SCF validity range check option Inline Tubular SCF: DN2 Tubular Inline check: Check it on Mud line elevation: -79.5m* (This must be defined for WJT curve) Water depth: 79.5m* (This must be defined for WJT curve) See below picture for details



Training 2011

5. Click-on “Next>” and select “No” to “Input Weld Classification Factors” to get Joint SCF Override Selections:

6. Click-on “Yes” to override the SCFs by Joint For example override joint 7108 and 7109 to have SCF=5.0, see below picture for the reference.



Training 2011

7. Click-on next to override fatigue analysis parameters by Joint, see picture below:

8. Click-on “Yes” to override selected joints For example, Joint 201L, 202L, 203L and 204L have safety factor of 10.0; the below dialog box can be repeated four times to define the safety factor for those four joints, just click-on “+More” After defined joint 201L, 202L and 203L, click-on “Next>” after you defined the last joint (204L in this sample).

9. Click-on “No” to “Override Fatigue Parameters to Plate Group?” 10. Click-on “No” to “Override Fatigue Parameters to Individual Plates?” 11. Click-on “No” to “Override SCFs for Member groups?” 12. Click-on “Yes” to “Remove Groups from the Analysis?” 13. Select W.B and DUM groups to be excluded from the fatigue analysis, see below for the details of the input.

14. Click-on “No” to “Override the SCF method for each joint type?” 15. Click-on “No” to “Override the SCF for each individual member?” 16. Click-on “Yes” to “Override SCFs for specific brace-chord connections?”



Training 2011

Define connection 301L-203X-302L to use WJ1 S-N curves, See below picture; this can be repeated for more joints by click-on “+More”, click-on “Next” after the last connection.

17. Click-on “No” to “Override SCFs for specific Wide Flange Members?” 18. Click-on “Yes” to “Place upper or lower bounds on the SCFs?”

Enter 1.5 for the Minimum SCF Enter 6.0 for the maximum SCF See below picture for the details of the input, click-on “Next”

19. Click-on “No” to “Select specific joints to be analyzed?” 20. Click-on “Yes” to “Brace stresses calculated at the surface of the chord?”

Step 9 Create fatigue input file 2: Define fatigue load cases 1. The first fatigue case (Wave 1: wave height 2.5m, period 3.5s)



Training 2011

Stress Calculation Type: MMN Fatigue Environmental Number: 1 Dynamic Amplification Factor: 1.0 Number of Occurrences: 60000.0 See below for the input details:

2. Click-on “Next” to enter the SACS load cases for the stress range calculation

Click-on “+More” to enter more load cases until load case 18

3. Click-on “Next” to enter fatigue case 2



Training 2011

All the input is same as above except a. The occurrences should be different b. The Fatigue Environmental Number is 2 c. SACS load cases should be 19-36 4. Repeat Step 10 until finish Fatigue Case 12, below shows the finished fatigue input file: --------------------------------------------------------------------------------------------------------------------FTOPT FTOPT2 JNTSCF JNTOVR JNTOVR JNTOVR JNTOVR GRPSEL CONSCF SCFLM RELIEF FTCASE FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB FTCASE

25.0 1.0 5.0 PTPTVC 5.0 7108 7109 201L 202L 203L 204L RM W.B DUM 301L203X301L 1.5 6.0 1 1 8 15 2 19 26 33 3 37 44 51 4 55 62 69 5 73 80 87 6 91 98 105 7 109 116 123 8 127 134 141 9 145 152 159 10 163 170 177 11

60000.0 1.0 2 1.0 9 1.0 16 20000.0 1.0 20 1.0 27 1.0 34 20000.0 1.0 38 1.0 45 1.0 52 5000.0 1.0 56 1.0 63 1.0 70 60000.0 1.0 74 1.0 81 1.0 88 20000.0 1.0 92 1.0 99 1.0106 20000.0 1.0110 1.0117 1.0124 5000.0 1.0128 1.0135 1.0142 60000.0 1.0146 1.0153 1.0160 20000.0 1.0164 1.0171 1.0178 20000.0

SMWJT

SKMXMNSK

LPEFT DN2

-79.5

79.5TI21.75

10.0 10.0 10.0 10.0 T

1.0 1.0 3 1.0 10 1.0 17 1.0 1.0 21 1.0 28 1.0 35 1.0 1.0 39 1.0 46 1.0 53 1.0 1.0 57 1.0 64 1.0 71 1.0 1.0 75 1.0 82 1.0 89 1.0 1.0 93 1.0100 1.0107 1.0 1.0111 1.0118 1.0125 1.0 1.0129 1.0136 1.0143 1.0 1.0147 1.0154 1.0161 1.0 1.0165 1.0172 1.0179 1.0

MMN 1.0 4 1.0 11 1.0 18 MMN 1.0 22 1.0 29 1.0 36 MMN 1.0 40 1.0 47 1.0 54 MMN 1.0 58 1.0 65 1.0 72 MMN 1.0 76 1.0 83 1.0 90 MMN 1.0 94 1.0101 1.0108 MMN 1.0112 1.0119 1.0126 MMN 1.0130 1.0137 1.0144 MMN 1.0148 1.0155 1.0162 MMN 1.0166 1.0173 1.0180 MMN

WJ1

1.0 5 1.0 12 1.0

1.0 6 1.0 13 1.0

1.0 7 1.0 14 1.0

1.0 1.0 1.0

1.0 23 1.0 30 1.0

1.0 24 1.0 31 1.0

1.0 25 1.0 32 1.0

1.0 1.0 1.0

1.0 41 1.0 48 1.0

1.0 42 1.0 49 1.0

1.0 43 1.0 50 1.0

1.0 1.0 1.0

1.0 59 1.0 66 1.0

1.0 60 1.0 67 1.0

1.0 61 1.0 68 1.0

1.0 1.0 1.0

1.0 77 1.0 84 1.0

1.0 78 1.0 85 1.0

1.0 79 1.0 86 1.0

1.0 1.0 1.0

1.0 95 1.0102 1.0

1.0 96 1.0103 1.0

1.0 97 1.0104 1.0

1.0 1.0 1.0

1.0113 1.0120 1.0

1.0114 1.0121 1.0

1.0115 1.0122 1.0

1.0 1.0 1.0

1.0131 1.0138 1.0

1.0132 1.0139 1.0

1.0133 1.0140 1.0

1.0 1.0 1.0

1.0149 1.0156 1.0

1.0150 1.0157 1.0

1.0151 1.0158 1.0

1.0 1.0 1.0

1.0167 1.0174 1.0

1.0168 1.0175 1.0

1.0169 1.0176 1.0

1.0 1.0 1.0


Engineering Dynamics, Inc. FTCOMB FTCOMB FTCOMB FTCASE FTCOMB FTCOMB FTCOMB

181 188 195 12 199 206 213

1.0182 1.0189 1.0196 5000.0 1.0200 1.0207 1.0214

1.0183 1.0184 1.0190 1.0191 1.0197 1.0198 1.0 MMN 1.0201 1.0202 1.0208 1.0209 1.0215 1.0216

Training 2011

1.0185 1.0192 1.0

1.0186 1.0193 1.0

1.0187 1.0194 1.0

1.0 1.0 1.0

1.0203 1.0210 1.0

1.0204 1.0211 1.0

1.0205 1.0212 1.0

1.0 1.0 1.0

5. Save As fatigue input file to ftginp.dyn. Step 10 Run fatigue analysis 1. Select analysis type and subtype a. Analysis type: Post Processing b. Subtype: Deterministic Fatigue c. File ID: dyn 2. Select input files a. Fatigue input file: ftginp.dyn b. First Common Solution File: psicsf.dyn c. Run file name: ftgdyn.runx See below picture for the details after the selection:

3. Click-on “Run Analysis” to run the fatigue analysis and check the results a. Check intermediate member report for in-line tubular fatigue damage results at the segment ends



Training 2011

b. Check stress concentration factor validity range report c. Check member fatigue report for the damage results of member ends and tubular connections Section 4

Create base shear/overturning moment transfer function

Change current directory to “\Spectrum Fatigue\Fatigue”, and copy seainp.dyn from “\Modes” folder; rename the file to seainp.plt. Step 1 Create Seastate input file 1. 2. 3. 4.

Open seainp.plt file with Datagen and remove DYNMAS and CENTER lines Change “B” option to “S” in FILE line Insert LOADCN line before the END line and define load case name “1” Insert GNTRF line for 0.0 degree direction a. Transfer function type: AL b. Number of waves: 90 c. Wave steepness: 1/20 (0.05) d. Beginning Period: 10.0 second e. Period step size: 0.1 second f. Number of crest position: 18 g. Wave direction: 0.0 degree h. Plot option: Both i. Leave other input unchanged

See below picture for the input dialog box

5. Repeat to create GNTRF lines for 45.0 and 90.0 directions



Training 2011

See below created seainp.plt file --------------------------------------------------------------------------------------------------------------------LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN FILE S CDM CDM 2.50 0.500 1.200 0.800 1.200 CDM 250.00 0.500 1.200 0.800 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 GRPOVAL LG2 1.501.501.501.50 GRPOVAL LG3 1.501.501.501.50 GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNN 0.001 0.001 0.001 0.001 0.001 LOAD LOADCN 1 GNTRF AL 90 0.05 10.0 0.1 18AIRYPF B GNTRF AL 90 0.05 10.0 0.1 45.0 18AIRYPF B GNTRF AL 90 0.05 10.0 0.1 90.0 18AIRYPF B END

F F F

1.0 1.0 1.0

Step 2 Create wave response input file 1. Use Datagen program to create a new input file a. Unit: Metric-forces in kN b. Analysis type: Dynamic c. Program: Wave Response 2. Define wave response options a. Unit selection: MN b. Load case selection: ALL c. Generate Plots: Check it on d. Number of modes: 20 e. Maximum allowable iteration: -1 f. Equivalent static option: None g. Leave other option unchanged See below picture for input details



Training 2011

3. Click-on “No” to “Plot Analysis Variables?”

4. Click-on “Yes” to plot transfer function plot

5. Select transfer function plots a. Overturning moment plot: Both b. Base shear plot: Both c. Independent variables: Both



Training 2011

6. Click-on “Skip” to Transfer function load case selection

7. Click-on “Yes” to modal damping selection

8. Define overall modal damping a. Enter 2.0 for the damping ratio

9. Click-on “No” to mode selection

The file created looks like below --------------------------------------------------------------------------------------------------------------------WROPT PLTTF DAMP END

MNPSL

ALL

20 OMBBSB

-1 FQ

2.0

10. Save as the file to WVRINP.PLT



Training 2011

Step 3 Create transfer function plots 1. Change the File ID to “PLT” and go to Analysis Generator a. Analysis type: Dynamic b. Subtype: Deterministic/Transfer function generator 2. Click-on a. Seastate input in model file: “No” b. Pick seainp.plt to Seastate input file c. Leave other unchanged d. Click-on “OK” when finish 3. Click-on if using input file a. Use wave response input file: Yes b. Pick wvrinp.plt as input file c. Click-on O.K when finish 4. Click-on if using analysis options a. Use wave response input file: No b. Response Options: Use Transfer Function Plot Option c. Percent damping: 2.0 d. Number of Iteration: -1 e. Number of Modes: 20 f. Plot Base shear: Yes g. Plot Overturning moment: Yes h. Click-on OK when finish

5. Select input files for the analysis a. SACS model file: \sacinp.dat b. Mode shape file: \Modes\dynmod.dyn c. Mass file: \Modes\dynmas.dyn d. Analysis will create wvrncf.plt file, this file contains the base shear and overturning moment transfer function plots.



Training 2011

6. Click-on “Run Analysis” and check transfer function plot to determine the wave periods need to be used to create transfer function loads a. Right on wvrncf.plt and open with Chartvue b. Check the overturning moment transfer function plots (vs period) for all three directions, move the mouse along the curve to determine the period points. c. Check Dynpac listing file for the “Frequency and Generalized Mass” report for the period above 1.0 second

7. The following wave period can be determined from (6.) a. The maximum wave period: 10.0 second b. The minimum wave period: 1.0 second c. Other period selected are: 8.5, 7.3, 6.0, 4.3, 3.5, 3.2, 3.1, 3.0, 2.84, 2.7, 2.6, 2.5, 2.43, 2.4, 2.2, 1.53, 1.36, 1.0. 8. The final wave period points selected to create transfer function loads Point number 1 2 3 4 5 6 7 8 9 10 11

Wave period 10 8.5 7.3 6.0 4.3 3.5 3.2 3.1 3.0 2.84 2.7



12 13 14 15 16 17 18 19 20 Section 5

Training 2011

2.6 2.5 2.44 2.4 2.2 2.0 1.54 1.36 1.0

Create transfer function loads

Step 1 Create seastate input files for the transfer function loads 1. Create seastate input file for 0.0 direction a. Open seainp.plt file with Datagen and Save as to Seainp.000 b. Remove GNTRF lines for 45 and 90 direction waves c. Create one GNTRF line to each wave periods in descending order d. The number of waves of each GNTRF line should be “1” e. The period step size of each GNTRF line should be blank f. Save the file when finish the input g. Below is the sample of created file --------------------------------------------------------------------------------------------------------------------LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN FILE S CDM CDM 2.50 0.500 1.200 0.800 1.200 CDM 250.00 0.500 1.200 0.800 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 GRPOVAL LG2 1.501.501.501.50 GRPOVAL LG3 1.501.501.501.50 GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNN 0.001 0.001 0.001 0.001 0.001 LOAD LOADCN 1 GNTRF AL 1 0.05 10.0 18AIRYPF GNTRF AL 1 0.05 8.5 18AIRYPF GNTRF AL 1 0.05 7.3 18AIRYPF GNTRF AL 1 0.05 6.0 18AIRYPF GNTRF AL 1 0.05 4.3 18AIRYPF GNTRF AL 1 0.05 3.5 18AIRYPF GNTRF AL 1 0.05 3.2 18AIRYPF GNTRF AL 1 0.05 3.1 18AIRYPF GNTRF AL 1 0.05 3.0 18AIRYPF GNTRF AL 1 0.05 2.84 18AIRYPF GNTRF AL 1 0.05 2.7 18AIRYPF

F F F

1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0


Engineering Dynamics, Inc. GNTRF GNTRF GNTRF GNTRF GNTRF GNTRF GNTRF GNTRF GNTRF END

AL AL AL AL AL AL AL AL AL

1 1 1 1 1 1 1 1 1

0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05

2.6 2.5 2.44 2.4 2.2 2.0 1.54 1.36 1.0

Training 2011

18AIRYPF 18AIRYPF 18AIRYPF 18AIRYPF 18AIRYPF 18AIRYPF 18AIRYPF 18AIRYPF 18AIRYPF

1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0

2. Create seastate input file for 45 and 90 direction a. Open seainp.000 with Datagen b. Save as the file to seainp.045 c. Change wave direction to 45.0 for each GNTRF lines, and save the file when finish d. Save as the file to seainp.090 e. Change wave direction to 90.0 for each GNTRF lines, and save the file when finish Step 2 Create wave response analysis run files Create the run file for 0.0 direction 1. Select analysis type a. Go to Analysis Generator and select “000” as File ID b. Analysis Type: Dynamic c. Subtype: Deterministic Wave/Transfer Function Generation 2. Click-on to set following options a. Seastate input in model file: No b. Select Seainp.000 to Seastate Input File c. Keep other options unchanged d. Click-on OK when finish 3. Click-on to select following options a. User wave input file: No b. Response options: Use transfer function load option c. Percent damping: 2.0 d. Number of iteration: -1 e. Number of modes: 20 f. Output Load Criteria: All crest positions g. Plot base shear/overturning moment: Yes h. Click-on OK when finish i. See below picture for details



Training 2011

4. Click-on to select the options to solve equivalent static loads a. Include super element file: Yes b. Pick “\Foundation SE\dynsef.dat to Super element file c. Keep other option unchanged d. Click-on OK when finish 5. Select input files a. Model file: \sacinp.dat b. Dynpac mode shape file: \Modes\dynmod.dyn c. Dynpac mass file: |modes\dynmas.dyn 6. Output file description a. Wvroci.000: Equivalent static load file b. Wvrncf.000: Transfer function plot file c. Saccsf.000: Transfer function load solution file* d. Wvr000.runx: Run file 7. Save the run file Create the run file for 45 degree direction 1. 2. 3. 4.

Change File ID to 045 Click-on “ID” Icon to reset output ID Replace seainp.000 file by seainp.045 Save the run file

Create the run file for 90 degree direction 1. Change File ID to 090 2. Click-on “ID” Icon to reset output ID 3. Replace seainp.045 file by seainp.090



Training 2011

4. Save the run file Below picture shows the analysis options of 90 degree direction

Step 3 User Multi-run feature to run the analysis 1. 2. 3. 4.

Click-on “Mul…” Tab to active multi-run window Drag wvr000.runx, wvr045.runx and wvr090.runx files to Multi-run window Click-on “Run Multi-run Icon to run the analysis See below picture for details



Section 6

Training 2011

Spectrum fatigue analysis

Step 1 Create spectrum fatigue input file 1. Launch Datagen program to create a new input file, set Unit to “Metric-Force in kN”, select “Post” icon and then select Fatigue program; see below picture for details:

2. Click-on “Select” and then select “No” to Title, the below window will show up:



Training 2011

3. Select Spectrum Fatigue and Click-on “Next”, Skip Fatigue options and Click-on “No” to all the dialog boxes until following dialog box shows up

4. Click-on “Yes” to get below window

5. Enter 18 to the “Number of wave positions per wave”, click-on “Next” to get below window and enter the data a. Fatigue Environmental Number: 1 b. Fraction of design life: 0.3 c. Dynamic amplification factor: 1.0 d. Leave other options unchanged

6. Click-on “Next” to get below window

7. Click-on “Yes” to wave scatter diagram input a. Period type: D for dominate b. Period factor: 1.0 c. Wave height factor: 1.0 d. Fraction of life factor: 1.0 e. Scatter diagram normalized: No f. Wave Spectrum type: PM



Training 2011

8. Click-on “Next” to get below window

9. Click-on “No” to define get wave height input window a. Enter the significant wave heights from Table 2 of Design Specification Document

10. Click-on “Next” to enter Occurrences of each period (1) a. Wave Period: 1.5 b. Frequency of Occurrence: 0.15, 0.1 and 0.1



Training 2011

11. Click-on “More” to enter the data to second wave period a. Wave Period: 3.0 b. Frequency of occurrence: 0.1, 0.19 and 0.11

12. Click-on “More” to enter the data to third wave period a. Wave Period: 5.0 b. Frequency of occurrence: 0.05, 0.08 and 0.05

13. Click-on “More” to enter the data to fourth wave period a. Wave Period: 8.0 b. Frequency of occurrence: 0.02, 0.03 and 0.02



Training 2011

14. Click-on OK to finish the 0.0 degree direction diagram, and get the following window

15. Click-on “No” to get fatigue case enter window

16. Repeat (5) to (15) to enter scatter diagram data for 45 and 90 directions, and the data is in Table 2 and 3 of the design specification document; Save as the file to ftginp.ftg, the input file so far should look like below --------------------------------------------------------------------------------------------------------------------FTOPT SEAS 18 FTCASE 1 0.3 SCATD D 1.0 1.0 SCWAV 0.3 SCPER 1.5 0.15 SCPER 3.0 .1 SCPER 5.0 .05 SCPER 8.0 .02 FTCASE 1 0.4 SCATD D 1.0 1.0 SCWAV 0.3 SCPER 1.5 0.13 SCPER 3.0 0.15 SCPER 5.0 .08 SCPER 8.0 .03 FTCASE 1 0.3 SCATD D 1.0 1.0 SCWAV 0.3

SMAPI

MX

PS2

1.0 SPC PM 2.0 0.1 .11 .05 .02 1.0 SPC 1.0 PM 1.0 2.0 0.1 0.08 .13 .10 .08 .07 .02 .03 1.0 SPC 1.0 PM 1.0 2.0 1.0 1.0 0.1 .19 .08 .03


Engineering Dynamics, Inc. SCPER SCPER SCPER SCPER

1.5 3.0 5.0 8.0

0.13 0.13 .06 .03

0.1 .15 .09 .03

Training 2011

0.08 .10 .08 .02

17. Complete the input file use the options already defined in deterministic fatigue analysis a. b. c. d. e. f. g. h.

Copy ftginp.dyn from \deterministic to current directory Open both files with Text Editor program Delete all the lines after RELIFE from Ftginp.dyn file Copy all the lines start from SEA from ftginp.ftg file to Ftginp.dyn file Save as Ftgdyn.dyn to Ftginp.ftg and replace existing file Open Ftginp.ftg with datagen program Change Additional Postfile to “2” in column 7 of FTOPT line Insert “EXTRAC HEAD” line after last SCPER line, select “Automatic Extraction” and enter 0.2 for “Damage Level”

i. Click-on OK when finish j. Save the file The completed wave spectrum fatigue input file listed below --------------------------------------------------------------------------------------------------------------------FTOPT 2 25.0 1.0 5.0 SMWJT FTOPT2 PTPTVC JNTSCF 5.0 7108 7109 JNTOVR 201L JNTOVR 202L JNTOVR 203L JNTOVR 204L GRPSEL RM W.B DUM CONSCF 301L203X301L SCFLM 1.5 6.0 RELIEF SEAS 18 FTCASE 1 0.3 1.0 SPC SCATD D 1.0 1.0 1.0 PM SCWAV 0.3 1.0 2.0 SCPER 1.5 0.15 0.1 0.1 SCPER 3.0 .1 .19 .11 SCPER 5.0 .05 .08 .05 SCPER 8.0 .02 .03 .02 FTCASE 1 0.4 1.0 SPC SCATD D 1.0 1.0 1.0 PM SCWAV 0.3 1.0 2.0 SCPER 1.5 0.13 0.1 0.08 SCPER 3.0 0.15 .13 .10

SKMXMNSK

LPEFT DN2

-79.5

79.5TI21.75

10.0 10.0 10.0 10.0 T

WJ1


Engineering Dynamics, Inc. SCPER 5.0 .08 SCPER 8.0 .03 FTCASE 1 0.3 SCATD D 1.0 1.0 SCWAV 0.3 SCPER 1.5 0.13 SCPER 3.0 0.13 SCPER 5.0 .06 SCPER 8.0 .03 EXTRAC HEAD AE 0.2 END

Training 2011

.08 .02

.07 .03 1.0 SPC 1.0 PM 1.0 2.0 0.1 0.08 .15 .10 .09 .08 .03 .02

Step 2 Create Spectrum fatigue run file 1. Select analysis type a. Change File ID to “ftg” b. Analysis type: Post Processing c. Subtype: Spectral Fatigue 2. Select input files a. Fatigue input file: ftginp.ftg b. First common solution file: saccsf.000 c. First Seastate input file: seainp.000 d. Second common solution file: saccsf.045 e. Second Seastate input file: seainp.045 f. Third common solution file: saccsf.090 g. Third Seastate input file: seainp.090 3. Output files a. Ftgext.ftg: Data for Interactive Fatigue b. Ftglst.ftg: Fatigue analysis listing file c. Ftgftg.runx: run file 4. Click-on “Run Analysis” to run spectral fatigue


SACS System

Training 2011

Load out with no load gap elements Preparation 1) Under “Training Project”, create “Gap Loadout” subdirectory 2) Copy the model file SACINP.DAT and seastate input file SEAINP.LIFT from “Static PSI” directory to “Gap Loadout” directory, rename them to SACINP.JKT and SEASTATE.LOADOUT. Modifying model and seastate input file to only include jacket for load out 1) Modify the structure to include jacket structure only Use Precede to open the model, delete the deck structure, piles, conductors, and wishbones; delete footprint weight EQPT. Using “Display” > “Zoom Box” > “Translate/Rotate” > “General”, select the whole structure, pick rotation angle about Y, input rotation angle -90.0, input Z translation = 11.0 m to rotate and move the structure. Using “Display” > “Zoom Box” > “Translate/Rotate” > “General” again, select the whole structure, pick rotation angle about Z, input rotation angle 180.0 rotate the structure to final fabrication position. Delete all existing Ky, Kz, Ly, and Lz definitions, and add Kz and Lz definitions for jacket horizontal framings and X braces. Add joints C101, C103, C201, C203, C301, C303, C401, and C403 relative to 101L, 103L, 201L, 203L, 301L, and 303L correspondingly with dZ = -1.75; Add joints D101, D103, D201, D203, D301, D303, D401, and D403 relative to C101, C103, C201, C203, C301, C303, C401, and C403 correspondingly with dZ = -1.75; Connecting these joints vertically with members using member group label set to CAN. Modifying members D101-C101, D103-C103, D201-C201, D203-C203, D301-C301, D303C303, D401-C401 to compression only members. Modifying members C101-101L, C103-103L, C201-201L, C203-203L, C301-301L, C303303L C401-401L, and C403-403L to set joint B offsets -61.6 cm in global Z directions. Set joint fixity 001000 to joints D101, D103, D201, D203, D301, D303, D401, and D403; Set joint fixity 110000 to joints C101, C105, C201, C205, C301, C303, C401, and C403. Define member properties for CAN: Member group CAN, Diameter = 76.20 cm, Wall Thickness = 2.54 cm

The added member group CAN, members and joints shall looks like following: Gap Loadout - 1

SACS System

Training 2011

------------------------------------------------------------------------------------------------------------GRUP CAN 76.200 2.540 20.007.72424.80 1 … MEMBER D103C103 CAN C MEMBER1C103103L CAN MEMBER OFFSETS MEMBER D203C203 CAN C MEMBER1C203203L CAN MEMBER OFFSETS MEMBER D303C303 CAN C MEMBER1C303303L CAN MEMBER OFFSETS MEMBER D101C101 CAN C MEMBER1C101101L CAN MEMBER OFFSETS MEMBER D201C201 CAN C MEMBER1C201201L CAN MEMBER OFFSETS MEMBER D301C301 CAN C MEMBER1C301301L CAN MEMBER OFFSETS MEMBER D401C401 CAN MEMBER1C401401L CAN MEMBER OFFSETS … JOINT C101 -79.500 13.350 1.750 JOINT C103 -79.500-13.350 1.750 JOINT C201 -50.000 10.400 1.750 JOINT C203 -50.000-10.400 1.750 JOINT C301 -21.000 7.500 1.750 JOINT C303 -21.000 -7.500 1.750 JOINT C401 2.000 5.200 1.750 JOINT C403 2.000 -5.200 1.750 JOINT D101 -79.500 13.350 0.000 JOINT D103 -79.500-13.350 0.000 JOINT D201 -50.000 10.400 0.000 JOINT D203 -50.000-10.400 0.000 JOINT D301 -21.000 7.500 0.000 JOINT D303 -21.000 -7.500 0.000 JOINT D401 2.000 5.200 0.000 JOINT D403 2.000 -5.200 0.000

1.001.00

0.500 7.8490

-61.60

-61.60

-61.60

-61.60

-61.60

-61.60

-61.60 110000 110000 110000 110000 110000 110000 110000 110000 001000 001000 001000 001000 001000 001000 001000 001000

------------------------------------------------------------------------------------------------------------2) Modify the SeaState input file Revise the mudline elevation and water depth to be 0.00. Remove HYDRO, HYDRO2, AMOD, CDM, marine growth, and group override cards; remove all load cases. Add load case DEAD to include only structural selfweight; Use weight selection line INCWGT to include the gravity effects from weight groups ANOD, LPAD and WKWY into load case DEAD. Add 5 load combinations named as ALLS, LOS1, LOS2, LOS3 and LOS4 to combine DEAD with a load factor 1.0, and representing all supports effective and 2 out of 8 supports lost for each following load combination.

Gap Loadout - 2

SACS System

Training 2011

Add gap load case selection LCSEL line to include ALLS, LOS1, LOS2, LOS3 and LOS4 for gap analysis. The SeaState input file shall look like following: ------------------------------------------------------------------------------------------------------------LDOPT NF+Z1.0280007.849000 LCSEL GP ALLS LOS1 LOS2 LOS3 LOS4 FILE B CENTER CEN1 LOAD LOADCNDEAD INCWGT ANODLPADWKWY DEAD DEAD -Z LCOMB LCOMB ALLS DEAD1.0000 LCOMB LOS1 DEAD1.0000 LCOMB LOS2 DEAD1.0000 LCOMB LOS3 DEAD1.0000 LCOMB LOS4 DEAD1.0000 END

GLOBMN

NPNP

K

M

------------------------------------------------------------------------------------------------------------Create Gap input file GAPINP.DAT to define no load gap elements For Gap options, All gap elements defined in the model = Yes; Units = MN; Add Gap type override by member LCGAP line to define, No load member D101-C101 and D103-C103 for load case LOS1; No load member D201-C201 and D203-C203 for load case LOS2; No load member D301-C301 and D303-C303 for load case LOS3; No load member D401-C401 and D403-C403 for load case LOS4; The gap input file generated shall looks like following: ------------------------------------------------------------------------------------------------------------GAPOPT LCGAP LOS1 LCGAP LOS2 LCGAP LOS3 LCGAP LOS4 END

0 INC NL INC NL INC NL INC NL

MN 600 0.00001 MEM D101C101 D103C103 MEM D201C201 D203C203 MEM D301C301 D303C303 MEM D401C401 D403C403

M

------------------------------------------------------------------------------------------------------------Create gap run file and run the analysis.

Gap Loadout - 3

SACS System

Training 2011

Review results. Gap element report: ------------------------------------------------------------------------------------------------------------NO. 1 2 3 4 5 6 7 8

NO. 1 2 3 4 5 6 7 8

NO. 1 2 3 4

Gap Loadout - 4

LOAD CASE ALLS CONVERGED IN 0 ITERATIONS GAP ELEMENT TYPE DEFLECTION FORCE CM KN D103-C103 COMP -0.01096 -736.2 D203-C203 COMP -0.01531 -1028.5 D303-C303 COMP -0.01248 -838.5 D101-C101 COMP -0.01094 -734.7 D201-C201 COMP -0.01532 -1029.4 D301-C301 COMP -0.01249 -839.1 D403-C403 COMP -0.00694 -466.5 D401-C401 COMP -0.00696 -467.6 LOAD CASE LOS1 CONVERGED IN 30 ITERATIONS GAP ELEMENT TYPE DEFLECTION FORCE CM KN D103-C103 NULL -1.37222 0.0 D203-C203 COMP -0.03268 -2195.1 D303-C303 COMP -0.01204 -808.8 D101-C101 NULL -1.37133 0.0 D201-C201 COMP -0.03267 -2194.9 D301-C301 COMP -0.01203 -808.4 D403-C403 COMP -0.00099 -66.3 D401-C401 COMP -0.00100 -67.1 LOAD CASE LOS2 CONVERGED IN 30 ITERATIONS GAP ELEMENT TYPE DEFLECTION FORCE CM KN D103-C103 COMP -0.01882 -1264.1 D203-C203 NULL -0.62087 0.0 D303-C303 COMP -0.01926 -1293.7 D101-C101 COMP -0.01880 -1262.7

FACTOR 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00

FACTOR 0.207227E+05 0.000000E+00 0.000000E+00 0.207094E+05 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00

FACTOR 0.000000E+00 0.937611E+04 0.000000E+00 0.000000E+00

SACS System 5 6 7 8

NO. 1 2 3 4 5 6 7 8

NO. 1 2 3 4 5 6 7 8

Training 2011 D201-C201 D301-C301 D403-C403 D401-C401

NULL COMP COMP COMP

-0.62139 -0.01928 -0.00762 -0.00764

0.0 -1295.1 -511.8 -513.2

LOAD CASE LOS3 CONVERGED IN 30 ITERATIONS GAP ELEMENT TYPE DEFLECTION FORCE CM KN D103-C103 COMP -0.01079 -724.5 D203-C203 COMP -0.02110 -1417.7 D303-C303 NULL -0.53055 0.0 D101-C101 COMP -0.01076 -723.0 D201-C201 COMP -0.02112 -1418.8 D301-C301 NULL -0.53093 0.0 D403-C403 COMP -0.01381 -927.5 D401-C401 COMP -0.01383 -929.0 LOAD CASE LOS4 CONVERGED IN 30 ITERATIONS GAP ELEMENT TYPE DEFLECTION FORCE CM KN D103-C103 COMP -0.00784 -526.4 D203-C203 COMP -0.01609 -1081.0 D303-C303 COMP -0.02177 -1462.6 D101-C101 COMP -0.00782 -525.1 D201-C201 COMP -0.01611 -1082.0 D301-C301 COMP -0.02179 -1463.4 D403-C403 NULL -0.71792 0.0 D401-C401 NULL -0.71884 0.0

0.938407E+04 0.000000E+00 0.000000E+00 0.000000E+00

FACTOR 0.000000E+00 0.000000E+00 0.801215E+04 0.000000E+00 0.000000E+00 0.801791E+04 0.000000E+00 0.000000E+00

FACTOR 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.108418E+05 0.108556E+05

-------------------------------------------------------------------------------------------------------------

Gap Loadout - 5

SACS System

Training 2011 Transportation Analysis

1. Transportation analysis using TOW program Preparation 1) Under “Training Project”, create “Tow” subdirectory 2) Under “Tow” subdirectory, create “Tow Inertia” directory 3) Copy SACINP.DAT model file from “Static” directory to “Tow Inertia” directory and rename it to SACINP.DECK. General Information A complete tow analysis includes the following parts: 1) The static analysis for dead load only 2) The tow analysis for transportation inertia loads 3) Combine the results from the above two analyses to generate a combined common solution file 4) Post processing, including member code checks and joint can checks. Modifying model for tow inertia load generation Delete the structure below elevation (+ 4.0 m), delete conductor joints 705F, 706F, 707F, and 708F at elevation (+ 15.3 m). Delete surface weight group LIVE, remove it from weight combination WTCMB line. Add joints at elevation (+ 5.5 m) on each leg, name them 601S, 602S, 603S, and 604S; Add joints 0.5 m below the bottom of deck leg joints, name them 601, 602, 603, and 604, and set the joint fixities as 111111. Add support can members below deck legs connecting joints 301-301L, 602-602L, 603603L, and 604-604L, set the member group name as GAP, and define the GAP group as OD = 106.68 cm, and wall thickness = 3.81 cm, release all three member moments at the bottom end, and define the member type as “Compression”. Around each support can joint 601, 602, 603, and 604 add 4 tie-down support joints, name them D101 to D104 for joints around joint 601, D201 to D204 for joints around joint 602, D301 to D304 for joints around joint 603, and D401 to D404 for joints around joint 604. Add tie-down members from joints S101~S104 to 601S, S201~S204 to 602S, S301~S304 to 603S, and S401~S404 to 604S, set the member group name as SEA, and define SEA as OD = 30.48 cm, and the wall thickness = 1.905 cm, define member type as “No Load”. Create a seastate input file SEAINP.DEAD for dead load only Create a seastate input file SEAINP.DEAD only contain the dead load, see the following. Transportation Analysis Page - 1

SACS System

Training 2011

---------------------------------------------------------------------------------------------------------------LDOPT NF+Z1.0280007.849000 FILE B LOAD LOADCNP000 INCWGT MASS DEAD DEAD -Z END

0.00

0.00GLOBMN

M BML

---------------------------------------------------------------------------------------------------------------Create a gap analysis run file and execute analysis Create a runfile and run the analysis, and browse for the results. The generated common solution file will be used to combine with the one generated from the analysis.

Create tow input file TOWINP.TRAN Tow options need to be set to MN units and center of motion, Coordinate X = -75.0 m, Y = 3.5 m and Z = 4.5 m Weight combination group MASS is selected by using INCWGT line for inertia load generation. Tow input file includes motions of 12.5 degree roll @ 10 seconds period, 10 degree pitch @ 15 seconds period, and the heave acceleration of 0.2 G. There are totally 8 load cases will be created using MOTION line. The gravity is only included in the lateral forces only. Transportation Analysis Page - 2

SACS System

Training 2011 +R+H: -R+H: +R-H: -R-H: +P+H: -P+H: +P-H: -P-H:

+ + + + -

Roll + Heave Roll + Heave Roll - Heave Roll - Heave Pitch + Heave Pitch + Heave Pitch - Heave Pitch – Heave

The tow input file generated shall looks like following: ---------------------------------------------------------------------------------------------------------------TRANSPORTATION ANALYSIS SAMPLE TOWOPT MN OR -75.00 INCWGT MASS MOTION+R+H 12.5 10.0 MOTION-R+H-12.5 10.0 MOTION+R-H 12.5 10.0 MOTION-R-H-12.5 10.0 MOTION+P+H 10.0 15.0 MOTION-P+H -10.0 15.0 MOTION+P-H 10.0 15.0 MOTION-P-H -10.0 15.0 END

3.50

4.5XYZ 0.2 0.2 -0.2 -0.2 0.2 0.2 -0.2 -0.2

L L L L L L L L

---------------------------------------------------------------------------------------------------------------Create a gap input file GAPINP.DAT to override the tie-down members to standard members. Define members with group ID of SEA as standard members for the above 8 load cases. ---------------------------------------------------------------------------------------------------------------GAPOPT LCGAP +R+H LCGAP -R+H LCGAP +R-H LCGAP -R-H LCGAP +P+H LCGAP -P+H LCGAP +P-H LCGAP -P-H END

0 INC ST INC ST INC ST INC ST INC ST INC ST INC ST INC ST

MN 600 0.00001 GRP SEA GRP SEA GRP SEA GRP SEA GRP SEA GRP SEA GRP SEA GRP SEA

M

---------------------------------------------------------------------------------------------------------------Create tow analysis run file and execute the tow analysis Create run file, run the analysis and browse for results.

Transportation Analysis Page - 3

SACS System


Training 2011

SACS System

Training 2011

Tow inertia loading summary report: ----------------------------------------------------------------------------------------------------------------------------------* * * D Y N A M I C L O A D I N G S U M M A T I O N * * * (MOMENTS ABOUT SACS ORIGIN) (NOTE: ASTERISK BY LOAD CASE ID INDICATES STRUCTURAL WEIGHT EXCLUDED)

LOAD CASE

* JACKET POSITION * ROLL PITCH YAW X Y Z ------ (DEG) ------

** ANGULAR ACCEL ** ROLL PITCH YAW X Y Z --- (DEG/SEC**2) ---

*** TRANS ACCEL *** SURGE SWAY HEAVE X Y Z ------- (G) -------

**** FORCE SUMMATION **** SURGE SWAY HEAVE X Y Z -------- (KN ) --------

***** MOMENT SUMMATION ***** ROLL PITCH YAW X Y Z -------- (KN-M ) ---------

+R+H 0.0 0.0 0.0 -4.9 0.0 0.0 0.000 0.216 0.176 0.0 -1621.4 -939.1 36261.7 1419.9 -3347.5 -R+H 0.0 0.0 0.0 4.9 0.0 0.0 0.000 -0.216 0.176 0.0 1621.4 -648.6 -35988.2 1692.0 3347.5 +R-H 0.0 0.0 0.0 -4.9 0.0 0.0 0.000 0.216 -0.224 0.0 -1621.4 862.1 35951.4 -2110.4 -3347.5 -R-H 0.0 0.0 0.0 4.9 0.0 0.0 0.000 -0.216 -0.224 0.0 1621.4 1152.5 -36298.5 -1838.3 3347.5 +P+H 0.0 0.0 0.0 0.0 -1.8 0.0 -0.174 0.000 0.185 1011.9 0.0 -1914.3 180.2 25843.9 190.8 -P+H 0.0 0.0 0.0 0.0 1.8 0.0 0.174 0.000 0.185 -1011.9 0.0 250.0 106.5 -22581.8 -190.8 +P-H 0.0 0.0 0.0 0.0 -1.8 0.0 -0.174 0.000 -0.215 1011.9 0.0 -113.2 -130.1 22313.6 190.8 -P-H 0.0 0.0 0.0 0.0 1.8 0.0 0.174 0.000 -0.215 -1011.9 0.0 2051.1 -203.8 -26112.1 -190.8 -------------------------------------------------------------------------------------------------------------------------------------

Forces and moments summary report: ------------------------------------------------------------------------------------------------------------------------------------FORCES AND MOMENTS SUMMARY *** MOMENTS SUMMED ABOUT ORIGIN ***

LOAD CASE

********************* KN ******************** FORCE(X) FORCE(Y) FORCE(Z)

******************** KN-M ******************* MOMENT(X) MOMENT(Y) MOMENT(Z)

+R+H 0.000 1621.366 939.039 -36261.621 -1419.866 3347.540 -R+H 0.000 -1621.361 648.607 35988.078 -1691.958 -3347.490 +R-H 0.000 1621.366 -862.076 -35951.406 2110.349 3347.537 -R-H 0.000 -1621.361 -1152.538 36298.305 1838.341 -3347.487 +P+H -1011.871 0.000 1914.315 -180.156 -25843.916 -190.781 -P+H 1011.874 0.000 -249.986 -106.516 22581.809 190.777 +P-H -1011.871 0.000 113.169 130.090 -22313.598 -190.783 -P-H 1011.875 0.000 -2051.117 203.740 26112.053 190.776 -------------------------------------------------------------------------------------------------------------------------------------


SACS System

Training 2011

Combine the results from dead load analysis and tow analysis Create a combine input file CMBINP.DAT, set the common solution file from the dead load analysis as a primary file and the common solution file from the tow analysis as the secondary file, and combine the load cases linearly. ---------------------------------------------------------------------------------------------------------------COMBINE DEAD CMBOPT LCOND C001 COMP PP000 COMP S+R+H LCOND C002 COMP PP000 COMP S-R+H LCOND C003 COMP PP000 COMP S+R-H LCOND C004 COMP PP000 COMP S-R-H LCOND C005 COMP PP000 COMP S+P+H LCOND C006 COMP PP000 COMP S-P+H LCOND C007 COMP PP000 COMP S+P-H LCOND C008 COMP PP000 COMP S-P-H END

LOAD WITH INERTIA LOADS LIN

LIN

LIN

LIN

LIN

LIN

LIN

LIN

1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0

---------------------------------------------------------------------------------------------------------------Create a run file and run the analysis.

Post Processing


SACS System

Training 2011

Use combined common solution file CMBCSF.TOE to perform the member code check, joint can check, and generate the postvue database.

2. Transportation analysis using Seastate program Preparation 1) Under “Tow” subdirectory, create “Seastate Inertia” directory 2) Copy the following files from “Tow Inertia” directory to “Seastate Inertia” directory: DECK.DAT, SEAINP.DEAD, CMBINP.DAT, GAPDEAD.RUNX, and CMBTOW.RUNX. General Information The procedure of the transportation analysis using Seastate program is almost the same as the analysis using Tow program. The only difference is to use Seastate program to generate the tow inertia loads. Create a Seastete input file SEAINP.TRAN Define center ID ROLL using CENTER line and set the coordinates as X = -75.0 m, Y = 3.5 m and Z = 4.5 m. 12.5 degree roll @ 10 seconds period, 10 degree pitch @ 15 seconds period and heave acceleration of 0.2 G will be used in MOTION line to generate accelerations. The option of gravity loads included in lateral force only is selected.


SACS System

Training 2011

Add 8 load conditions using MOTION line and select the option of “Include gravity in lateral forces only. Weight groups ANOD, LPAD and WKWY will be selected in inertia load generation.. +R+H: -R+H: +R-H: -R-H: +P+H: -P+H: +P-H: -P-H:

+ + + + -

Roll + Heave Roll + Heave Roll - Heave Roll - Heave Pitch + Heave Pitch + Heave Pitch - Heave Pitch – Heave

The added seastate lines shall looks like following: ------------------------------------------------------------------------------------------------------------LDOPT NF+Z1.0280007.849000 FILE B CENTER ROLL -75.0 3.5 4.5 LOAD LOADCN+R+H INCWGT MASS MOTION 12.5 10.0 LOADCN-R+H INCWGT MASS MOTION -12.5 10.0 LOADCN+R-H INCWGT MASS MOTION 12.5 10.0 LOADCN-R-H INCWGT MASS MOTION -12.5 10.0 LOADCN+P+H INCWGT MASS MOTION 10.0 LOADCN-P+H INCWGT MASS MOTION -10.0 LOADCN+P-H INCWGT MASS MOTION 10.0 LOADCN-P-H INCWGT MASS MOTION -10.0 END

0.00

0.00GLOBMN

0.2L

ROLL

0.2L

ROLL

-0.2L

ROLL

-0.2L

ROLL

15.0

0.2L

ROLL

15.0

0.2L

ROLL

15.0

-0.2L

ROLL

15.0

-0.2L

ROLL

------------------------------------------------------------------------------------------------------------Create Seastate run file and run analysis Create Seastate run file and run analysis, browse for results and compare that to generate by Tow program.


SACS System

Training 2011

Inertia loading summary report: ----------------------------------------------------------------------------------------------------------------------------------FORCES AND MOMENTS SUMMARY *** MOMENTS SUMMED ABOUT ORIGIN ***

LOAD CASE

********************* KN ******************** FORCE(X) FORCE(Y) FORCE(Z)

******************** KN-M ******************* MOMENT(X) MOMENT(Y) MOMENT(Z)

+R+H 0.000 1621.360 939.055 -36260.094 -1421.256 3350.844 -R+H 0.000 -1621.352 648.602 35986.402 -1693.509 -3350.796 +R-H 0.013 1621.353 -862.222 -35950.398 2112.134 3350.677 -R-H -0.008 -1621.358 -1152.567 36296.734 1840.384 -3350.787 +P+H -1011.865 0.000 1914.308 -180.050 -25832.625 -190.783 -P+H 1011.871 0.000 -250.009 -106.628 22567.527 190.778 +P-H -1011.868 -0.005 113.231 130.326 -22298.715 -190.757 -P-H 1011.882 -0.006 -2051.208 203.119 26101.771 190.789 ------------------------------------------------------------------------------------------------------------------------------------


SACS System

Training 2011 Pushover Analysis

Section 1

Create a pushover analysis directory and a collapse input file

Step 1 Create the directory for pushover analysis Under “Training Project”, create “Pushover” subdirectory; copy the model file sacinp.dat, seastate input file seainp.dat, and psi input file psiinp.dat to the directory, and make this directory current. Step 2 Modify the model input file and seastate input file for collapse analysis Modify the model file: the only modification for the model file is to delete HYDRO and HYDRO2 lines. Modify the seastate input file: • Delete AMOD lines; • Modify operating storm load cases and extreme storm load case P000~P090 and S000~S090 by deleting DEAD lines and INCWGT line; • Add DEAD load condition with selected weight groups for ANOD and WKWY; • Delete all existing combined load conditions; • Add a new combined load condition GRAV to include structural dead load and applied equipment loads, miscellaneous loads and live loads; • Modify LCSEL line to include load conditions GRAV, S000, S045, and S090; • Input CMB into column 65-67 in LDOPT line. Seastate input file defined shall look like the following: ------------------------------------------------------------------------------------------------------------LDOPT NF+Z1.0280007.849000 -79.50 79.50GLOBMN CMB * LCSEL ST GRAV S000 S045 S090 FILE B CENTER CEN1 CDM CDM 2.50 0.600 1.200 0.600 1.200 CDM 250.00 0.600 1.200 0.600 1.200 MGROV MGROV 0.000 60.000 2.500 2.5410-4 1.400 MGROV 60.000 79.200 5.000 2.5410-4 1.400 GRPOV GRPOVAL LG1 1.501.501.501.50 GRPOVAL LG2 1.501.501.501.50 GRPOVAL LG3 1.501.501.501.50 GRPOVAL PL1NN 0.001 0.001 0.001 GRPOVAL PL2NN 0.001 0.001 0.001 GRPOVAL PL3NN 0.001 0.001 0.001 GRPOVAL PL4NN 0.001 0.001 0.001 GRPOV W.BNF 0.001 0.001 0.001 0.001 0.001 LOAD LOADCNDEAD DEAD DEAD -Z 81.000 M BML INCWGT ANODWKWY LOADCNAREA

Pushover Analysis - 1

F F F

SACS System INCWGT AREA ACCEL 1.00000 LOADCNEQPT INCWGT EQPT ACCEL 1.00000 LOADCNLIVE INCWGT LIVE ACCEL 1.00000 LOADCNMISC INCWGT MISC ACCEL 1.00000 LOADCNS000 WAVE WAVE1.00STRE 12.19 81.00 15.00 0.00 D 20.00 WIND WIND D 45.170 0.00 AP08 CURR CURR 0.000 0.514 0.000 -5.000BC LN CURR 81.000 1.801 LOADCNS045 WAVE WAVE1.00STRE 12.19 81.00 15.00 45.00 D 20.00 WIND WIND D 45.170 45.00 AP08 CURR CURR 0.000 0.514 45.000 -5.000BC LN CURR 81.000 1.801 45.000 LOADCNS090 WAVE WAVE1.00STRE 12.19 81.00 15.00 90.00 D 20.00 WIND WIND D 45.170 90.00 AP08 CURR CURR 0.000 0.514 90.000 -5.000BC LN CURR 81.000 1.801 90.000 LCOMB LCOMB GRAV DEAD1.0000AREA1.0000EQPT1.0000LIVE0.7500MISC1.0000 END

Training 2011 N CEN1

N CEN1

N CEN1

N CEN1

18MS10 1

18MS10 1

18MS10 1

------------------------------------------------------------------------------------------------------------Step 3 Create the collapse input file CLPINP.000 Pushover analysis should be performed for each wave direction since the structural behaviors could be different when environmental loads are applied on the structure from different directions. In one collapse pushover analysis clients can define more than one load sequence in one collapse analysis input file to include environmental loads from different directions. However only the results from the last load sequence defined in the input file is saved in clprst file for collapse view program. In this demo pushover analysis it only includes extreme storm loads from one direction, 0 degree. The unit of the collapse input file: There is no place to define the unit for the collapse input file. The program will use the same unit as whatever defined in the structural model file. Collapse options: • Member segments 8 is chosen along with 80 iterations allowed for both load increment and member iterations; • Member local buckling check with API Bulletin LRFD method is included; Pushover Analysis - 2

SACS System • • • •

Training 2011

Joint flexibility with JF option and joint strength check with API LRFD option is included; Pile plasticity is selected in the analysis; The maximum deflection = 500 cm is used as the collapse criterion. Strain hardening ratio of .005 is selected.

Collapse analysis report selections: • Joint deflections will be printed out in the listing file for each load increment by selecting P1 • Joint strengths will be printed out for each load increment by selecting J1; • Member stresses will be printed out for each load increment by selecting M1; • Collapse and member summary report will be included in the output listing file by selecting SM and MS. Define load sequence: • One Load sequence AAAA is defined to apply vertical loads first, and then apply ship impact loads by increments; • Combined load case GRAV will be applied on the structure in 1 load increment; • Load case S000 will be applied on the structure 1) in 2 load steps from load factors of 0 to 1.00; 2) in 50 steps for load factors from 1.02 to 2.02. In this demo pushover analysis the jacket structure and piles behaviors are to be investigated for environmental loads exceed the design extreme storm loads, deck members are to be defined as Elastic members during the analysis. Elastic member groups can be defined using GRPELA line for member groups W01, W02, DL6, DL7, DUM, and W.B. Collapse input files defined shall look like following: Clpinp.000 ------------------------------------------------------------------------------------------------------------CLPOPT 80 CLPRPT P1 M1 LDSEQ AAAA GRPELA END

8 80 LBJFPPJS J1SMMS GRAV 1 1.00S000 W01 W02 DL6 DL7 DUM W.B

LR 2

0.100.001 0.01 500. .005 1.0S000

50

1.02

2.02

------------------------------------------------------------------------------------------------------------Section 2

Create the collapse analysis run file

Step 1 Select analysis type and sub-type Click “Analysis Generator” from Executive window and select “Statics” for Type and “Full Plastic Collapse/Pushove” for Subtype. The file Id of 000 is chosen in the first analysis. Step 2 Select Analysis Options Check options for Environmental Loading, Solve, Foundation, and Non-Linear / Plastic. Step 3 Select input files SACS model input file is SACINP.DAT; Pushover Analysis - 3

SACS System

Training 2011

SeaState input file is SEAINP.DAT; Foundation input file is PSIINP.DAT; Collapse input file is CLPINP.000 See below picture for the selected options:

Section 3


Check the results from collapse view: After a collapse analysis is finished, a collapse view file clprst.000 will be created. Double click the file name, collapse view program will open the file and many results can be checked on the screen. Several reports, such as analysis history report, joint report, member report, and pile capacity report can be generated. The part of pile capacity report generated from collapse view is shown below. ------------------------------------------------------------------------------------------------------------Pile Capacity Used Report Load Step 1 1 1

Load Cond GRAV GRAV GRAV

Load Pilehead Factor Joint 1.00 101P 1.00 102P 1.00 103P


Axial Load -3774.2 -2322.5 -3624.1

(KN

Total Capacity -57792.1 -57772.9 -57792.1

) Capacity Used (%) 6.5 Compression 4.0 Compression 6.3 Compression

SACS System

Training 2011

1 1 1 1 1 2 2 2 2 … 13 13 13 13 13 13 14 14 14 14 14 14 14 14 … 44 44 44 44 44 44 44 44 45 45 45

GRAV GRAV GRAV GRAV GRAV S000 S000 S000 S000

1.00 1.00 1.00 1.00 1.00 0.50 0.50 0.50 0.50

104P 105C 106C 107C 108C 101P 102P 103P 104P

-2467.7 -403.3 -403.3 -403.3 -403.3 -1353.8 -4740.8 -1204.2 -4885.2

-57772.9 -21849.2 -21849.2 -21849.2 -21849.2 -57792.1 -57772.9 -57792.1 -57772.9

4.3 1.8 1.8 1.8 1.8 2.3 8.2 2.1 8.5

Compression Compression Compression Compression Compression Compression Compression Compression Compression

S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000

1.20 1.20 1.20 1.20 1.20 1.20 1.22 1.22 1.22 1.22 1.22 1.22 1.22 1.22

103P 104P 105C 106C 107C 108C 101P 102P 103P 104P 105C 106C 107C 108C

2272.2 -8379.5 -403.3 -403.3 -403.3 -403.3 2234.1 -8347.2 2373.9 -8483.9 -403.3 -403.3 -403.3 -403.3

58144.3 -57772.9 -21849.2 -21849.2 -21849.2 -21849.2 58144.3 -57772.9 58144.3 -57772.9 -21849.2 -21849.2 -21849.2 -21849.2

3.9 14.5 1.8 1.8 1.8 1.8 3.8 14.4 4.1 14.7 1.8 1.8 1.8 1.8

Tension Compression Compression Compression Compression Compression Tension Compression Tension Compression Compression Compression Compression Compression

S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000

1.82 1.82 1.82 1.82 1.82 1.82 1.82 1.82 1.84 1.84 1.84

101P 102P 103P 104P 105C 106C 107C 108C 101P 102P 103P

5296.4 -11419.9 5418.5 -11539.5 -403.5 -403.5 -403.5 -403.5 5409.1 -11520.7 5522.3

58144.3 -57772.9 58144.3 -57772.9 -21849.2 -21849.2 -21849.2 -21849.2 58144.3 -57772.9 58144.3

9.1 19.8 9.3 20.0 1.8 1.8 1.8 1.8 9.3 19.9 9.5

Tension Compression Tension Compression Compression Compression Compression Compression Tension Compression Tension

47 47 47 47 47 47 47 47 48 48 48 48 48 48 48 48

S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000 S000

1.88 1.88 1.88 1.88 1.88 1.88 1.88 1.88 1.90 1.90 1.90 1.90 1.90 1.90 1.90 1.90

101P 102P 103P 104P 105C 106C 107C 108C 101P 102P 103P 104P 105C 106C 107C 108C

5651.7 -11722.8 5740.8 -11809.2 -402.0 -402.0 -402.0 -402.0 5769.9 -11851.0 5844.4 -11924.4 -402.5 -402.5 -402.5 -402.5

58144.3 -57772.9 58144.3 -57772.9 -21849.2 -21849.2 -21849.2 -21849.2 58144.3 -57772.9 58144.3 -57772.9 -21849.2 -21849.2 -21849.2 -21849.2

9.7 20.3 9.9 20.4 1.8 1.8 1.8 1.8 9.9 20.5 10.1 20.6 1.8 1.8 1.8 1.8

Tension Compression Tension Compression Compression Compression Compression Compression Tension Compression Tension Compression Compression Compression Compression Compression

------------------------------------------------------------------------------------------------------------Collapse view also can show the structural damage graphically, see the following pictures.


SACS System

Training 2011

The parts of results also can be viewed by graphic curves. Select the Total Joint Displacement as the output parameter for X axis and 100 cm as the maximum value, the Load Factor as the output parameter for Y axis, and omit the final load increment from the graph, see the followings.


SACS System

Training 2011

The curve is shown as below.

Check collapse output listing file: The listing file reports the selected outputs, such as joint deflections and member stresses. It also includes the total ship impact energy, and the energy absorbed by structure at each load increment. Listing file also indicates the structure damages.


SACS System

Training 2011

The following are parts of the listing file. ----------------------------------------------------------------------------------------------------------------------**** INCREMENT NO.

48 DEFLECTIONS AND ROTATIONS FOR LOAD CASE S000 **** LOAD FACTOR

JOINT

101L 101P 101X 102L 102P 102X 103L 103P 103X 104L 104P

1.900

****** DEFLECTIONS ****** X Y Z CM CM CM 58.166 58.153 63.360 58.117 57.472 63.696 58.548 58.535 66.304 58.500 57.855

0.227 -0.143 -0.026 -0.066 0.574 0.206 0.269 0.632 0.260 -0.139 -0.779

3.391 -0.304 0.541 -2.822 3.573 0.530 3.381 -0.256 3.261 -2.837 3.555

******* ROTATIONS ******* X Y Z RAD RAD RAD 0.00004 -0.00006 0.00000 0.00021 -0.00022 -0.00001 -0.00005 -0.00011 -0.00001 -0.00022 0.00031

0.00366 0.02031 0.00260 0.00387 0.03041 0.00261 0.00366 0.02036 0.00267 0.00386 0.03099

-0.00115 -0.00361 -0.00001 -0.00101 -0.00335 -0.00030 0.00084 0.00347 -0.00013 0.00071 0.00330

… ** SACS COLLAPSE MEMBER FORCES AND MOMENTS ** INCREMENT

MEMBER

GRUP LOC. M

48

****** INTERNAL FORCES ****** X Y Z KN KN KN

LOAD FACTOR

1.900

***** INTERNAL MOMENTS ***** X Y Z KN-M KN-M KN-M

************** STRESSES ************** AXIAL BEND-Y BEND-Z SHEAR-Y SHEAR-Z N/MM2 N/MM2 N/MM2 N/MM2 N/MM2

PLAST. RATIO

101L-101X

BR1

0.00 2.14 4.28 6.42 8.56 10.70 12.84 14.98 17.12

2520.658 2520.658 2519.592 2518.750 2518.725 2517.659 2517.042 2516.793 2515.727

3.538 3.538 3.291 3.080 2.836 2.785 2.747 2.734 2.891

-2.387 -2.387 -1.477 -0.413 1.252 2.276 3.726 5.585 7.080

17.4 17.4 17.4 17.4 17.4 17.4 17.4 17.4 17.4

-34.2 -39.3 -42.5 -43.3 -40.7 -35.8 -27.8 -15.9 -0.7

-42.3 -34.7 -27.7 -21.1 -15.0 -9.1 -3.2 2.7 8.9

60.9 60.9 60.8 60.8 60.8 60.8 60.8 60.8 60.7

-4.9 -5.6 -6.1 -6.2 -5.8 -5.1 -4.0 -2.3 -0.1

-6.1 -5.0 -4.0 -3.0 -2.2 -1.3 -0.5 0.4 1.3

0.2 0.2 0.2 0.1 0.1 0.1 0.1 0.1 0.1

-0.1 -0.1 -0.1 0.0 0.1 0.1 0.2 0.3 0.3

0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

101L-101X

BR1 17.12 18.12

2514.945 2514.945

3.050 3.050

8.320 8.320

17.4 17.4

-0.7 7.6

8.9 11.9

60.7 60.7

-0.1 1.1

1.3 1.7

0.1 0.1

0.4 0.4

0.00 0.00

… ********************* JOINT STRENGTH REPORT ********************* INCREMENT 48 LOAD FACTOR 1.900 JOINT CHORD BRACE PERCENT PERCENT PERCENT *** APPLIED STRESSES *** ** ALLOWABLE STRESSES ** JNT JNT T&Y X K AXIAL OUT-PLN INPLANE AXIAL OUT-PLN INPLANE N/MM2 N/MM2 N/MM2 N/MM2 N/MM2 N/MM2 7119 706F 708F 100.00 0.00 0.00 -0.15 3.93 -1.30 137.76 396.04 511.16 7116 705F 706F 100.00 0.00 0.00 -0.23 -1.90 -4.43 137.77 396.06 511.20 7120 705F 706F 11.27 88.73 0.00 -2.38 -0.17 -1.03 176.32 396.08 511.26


UNITY CHECK 0.010 0.010 0.002

SACS System

7117 7118 …

705F 707F 705F

707F 708F 707F

Training 2011 0.00 100.00 100.00

100.00 0.00 0.00

0.00 0.00 0.00

-2.11 -0.17 -0.27

-0.54 2.12 -3.63

1.06 -4.61 -1.20

181.21 137.77 137.77

396.08 396.06 396.06

511.26 511.20 511.21

0.003 0.010 0.009

** SACS COLLAPSE PILE DETAIL REPORT ** INCREMENT

48

LOAD FACTOR

1.900

PILEHEAD JOINT 101P

INCR

1 2 3 4 5 6 7 8 9 10 11

DISTANCE M 0.00 0.40 0.80 1.20 1.60 2.00 2.40 2.80 3.20 3.60 4.00

**** DEFLECTIONS **** X Y Z CM CM CM 0.317 0.317 0.312 0.303 0.293 0.281 0.267 0.251 0.234 0.216 0.197

58.153 57.290 56.374 55.413 54.410 53.368 52.291 51.182 50.043 48.878 47.688

0.000 0.003 0.005 0.007 0.009 0.011 0.012 0.014 0.015 0.016 0.017

***** ROTATIONS ***** X Y Z RAD RAD RAD 0.0016 0.0016 0.0016 0.0016 0.0016 0.0016 0.0016 0.0016 0.0016 0.0016 0.0016

-0.0001 -0.0001 -0.0001 -0.0001 -0.0001 -0.0001 -0.0001 -0.0001 -0.0001 -0.0001 -0.0001

-0.0206 -0.0219 -0.0232 -0.0243 -0.0253 -0.0262 -0.0270 -0.0278 -0.0285 -0.0292 -0.0298

************** ELASTIC INTERNAL LOADS *************** FX FY FZ MX MY MZ KN KN KN KN-M KN-M KN-M 5769.91 5843.86 5906.75 5981.88 6067.73 6162.92 6265.64 6373.92 6485.63 6598.53 6710.24

1197.68 1062.08 1064.08 1050.95 1028.61 1004.85 979.70 953.22 925.47 896.51 866.43

1.31 1.62 1.53 1.49 1.46 1.44 1.41 1.38 1.36 1.33 1.30

7.0 7.9 7.7 7.6 7.5 7.4 7.3 7.2 7.2 7.1 7.0

-20.1 -19.3 -18.6 -18.0 -17.4 -16.8 -16.2 -15.6 -15.1 -14.5 -14.0

7039.3 6625.2 6200.3 5774.7 5354.3 4942.9 4540.9 4149.0 3767.8 3397.6 3039.0

PLASTIC RATIO

0.250 0.250 0.083 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

…

----------------------------------------------------------------------------------------------------------------------



Training 2011 Ship Impact Analysis

Section 1

Create a ship impact analysis directory and a collapse input file

Step 1 Create the directory for ship impact analysis Under “Training Project”, create “Ship Impact” subdirectory; copy the model file sacinp.dat, seastate input file seainp.dat, and psi input file psiinp.dat to the directory, and make this directory current. Step 2 Modify model file and seastate input file for collapse analysis Modify the model file:  Divide the member 402L-304X by add a joint IMPC at Z = -5.0 m;  Add load case SHIP w load ID SHIPIMPC: apply a 100.0 kN concentrated load at joint IMPC in the (–)X direction.

Modify the seastate input file:  Delete LCSEL and AMOD lines;  Delete all operating storm load cases and extreme storm load case P000~P090 and S000~S090;  Delete all load combinations;  Add DEAD load condition with selected weight groups for ANOD and WKWY.

Ship Impact Analysis - 1


Training 2011

Step 3 Create the collapse input file CLPINP.CLP The unit of the collapse input file: There is no place to define the unit for the collapse input file. The program will use the same unit as whatever defined in the structural model file. Collapse options:  Member segments 8 will be chosen along with 80 iterations allowed for both load increment and member iterations;  Member local buckling check with API Bulletin LRFD method will be included;  Joint flexibility and joint strength will be included;  Pile plasticity will be included;  Collapse maximum deflection = 500 cm will be used with .005 strain hardening ratio. Collapse analysis report selections:  Joint deflections and member stresses will be printed out in the listing file for each load increment by selecting P1 for joint deflection print option and M1 fore member stress print option;  Collapse and member summary report will be included in the output listing file. Define load sequence:  One Load sequence AAAA defined for applying vertical loads and then ship impact loads;  Load case DEAD, EQPT, MISC, AREA will be added in one step;  Load case SHIP will be added in 50 steps for load factor of 50.0. Elastic member groups can be defined using GRPELA line for member groups W01, W02, DL6, DL7, DUM, and W.B. Define the ship impact loads and energy:  Add an IMPACT line to define 1) the ship impact joint is IMPC: 2) the impact load case is SHIP; 3) member denting is calculated per Ellinas formula and the member dent B ratio is 8.  Add an ENERGY line to define the ship mass and velocity: Ship mass is 1100 tones with an added mass coefficient of 1.4, and ship velocity is 1.2m/sec. Collapse program will calculate the ship impact energy per API RP 2A Section C18.9.2a. Collapse input file defined shall looks like following: ------------------------------------------------------------------------------------------------------------CLPOPT 80 8 80 LBJFPPJS CLPRPT P1 M1 SMMS LDSEQ AAAA DEAD 1 1.00EQPT 1 LDSEQ AREA 1 1.00LIVE 1 GRPELA W01 W02 DL6 DL7 DUM W.B IMPACT SHIP IMPC EX E 402L IMPC ENERGY 1100. 1.4 1.2 END

LR

0.100.001 0.01 500. .005 1.0MISC 0.75SHIM

1 50

1.0 50.0

8.

-------------------------------------------------------------------------------------------------------------


Engineering Dynamics, Inc. Section 2

Training 2011

Create the collapse analysis run file

Step 1 Select analysis type and sub-type Click “Analysis Generator” from Executive window and select “Statics” for Type and “Full Plastic Collapse/Pushove” for Subtype. The file Id of clp is chosen in the analysis. Step 2 Select Analysis Options Check options for Environmental Loading, Solve, Foundation, and Non-Linear / Plastic. Step 3 Select input files See below picture for the selected options:

Section 3


Check the results from collapse view:



Training 2011

After a collapse analysis is finished, a collapse view file clprst.clp will be created. Double click the file name, collapse view program will open the file and many results can be checked on the screen. Several reports, such as analysis history report, joint report, member report, and work done report can be generated. Collapse view also can show the structural damage graphically, see the following pictures.

The parts of results also can be viewed by graphic curves. Select the Total Energy Absorbed by structure as the output parameter for X axis, the load step as the output parameter for Y axis, and omit the final load increment from the graph, see the followings.



Training 2011

The curve is shown as below.

Check collapse output listing file: The listing file reports the selected outputs, such as joint deflections and member stresses. It also includes the total ship impact energy, and the energy absorbed by structure at each load increment. Listing file also indicates the structure damages.



Training 2011

The following are parts of the listing file. ----------------------------------------------------------------------------------------------------------------------SHIP IMPACT SETTINGS 1. 2. 3. 4.

5. 6. 7. 8.

Impact energy calculated from ENERGY line: 1.11 (MJ) Impact load condition: SHIM Indentation joint: IMPC Impact force X : -0.1000 (MN) Y : 0.0000 (MN) Z : 0.0000 (MN) Ship indentation curve: (none specified) Automatic unloading: OFF Member for which denting energy is calculated :402L-IMPC Denting energy calculated using Ellinas formula

…. …. ** SACS COLLAPSE IMPACT ENERGY ABSORPTION **

INCREMENT

Energy absorbed by structure Energy absorbed by member Total absorbed impact energy % of total energy absorbed Member indentation

= = = = =

25

LOAD FACTOR

Aggregate (MJ) 0.8649 0.0485 0.9134 82.3693 0.0572

*** PLASTICITY OCCURRED ON MEMBER 402L-404L AT LOAD STEP *** PLASTICITY OCCURRED ON MEMBER 4100-404L AT LOAD STEP *** PLASTICITY OCCURRED ON MEMBER 4101-402L AT LOAD STEP

(%) (M)

20.000

Incremental (MJ) 0.3358 0.0000 0.3358 30.2828 0.0000

* Limited by B ratio (%) (M)

25 25 25

**** WARNING - EXCEEDED MAXIMUM ALLOWED DISPLACEMENT OR ROTATION **** WARNING - STRUCTURE COLLAPSED ******** -----------------------------------------------------------------------------------------------------------------------


Hdsd Sacs2011_sacs 5.3

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