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TECHNICAL SUBMITTAL FOR SHORING WORKS
PROJECT DESIGN, SUPPLY, INSTALLATION, TESTING AND COMMISSIONING OF MAIN POWER STATIONS MPS4 (GRNLMTRO, (GRNLMTRO, MPS 5 (REDLMTRO) FOR DUBAI EXPO 2020METRO EXTENSION PROJECT
CLIENT M/s RTA/DEWA
CONSULTANT M/s ENERGOPROJEKT ENTEL CO. LTD
SHORING CONTRACTOR GEO FOUNDATION GROUP MAY 2017
TABLE OF CONTENTS
A. INTRODUCTION B. DESIGN CONSIDERATIONS C. SOIL CONDITIONS D. CALCULATIONS AND DESIGN E. BOREHOLE LOGS
TABLE OF CONTENTS
A. INTRODUCTION B. DESIGN CONSIDERATIONS C. SOIL CONDITIONS D. CALCULATIONS AND DESIGN E. BOREHOLE LOGS
A. INTRODUCTION The Proposed shoring system will be required for the Design, Supply, Installation, Testing And Commissioning Of Main Power Stations Mps4 (Grnlmtro, Mps 5 (Redlmtro) For Dubai Expo 2020metro Extension Project Details of the project are as follows;
Client:
M/s RTA / DEWA
Main Consultant:
M/s ENERGOPROJEKT ENTEL CO. LTD
Shoring Contractor:
M/s GEO FOUNDATION GROUP. L.L.C.
B. DESIGN CONSIDERATIONS Shoring type:
Soldier Piles (all sides)
Max Excavation Depth:
-2.50m
Cantilever soldier piles
C. SOIL CONDITIONS The soil parameters used for the design were based on the soil report done by Technical Laboratory for Soil & Building Material Testing report no. DS/20187 dated 02 nd April 2017.
As per the soil investigation report ground water table was encountered at a depth range of -5.20m.
Soil classifications are as per borehole logs attached.
Construction Stages Name Term Objects present in this stage Construction Short Retaining Wall 1 Stage 1 On retained side: Ground Prof ile 1, Borehole 1, Water Table 1, Surcharge 1, On excavated side: Excavation 1, Borehole 1, Water Table 1, Ground Profiles Name Ground Profile 1
Excavations Name
Excavation 1
Type Other Properties Horizontal Ground
Type
Depth (m)
Horizontal Excavation
2.50
Plan Plan Other Properties length breadth (m) (m) -
Soils Name
Type
Class
State
Soil 1 Soil 2 Soil 3
Custom Soil Custom Soil Custom Soil
Unclassified Unclassified Unclassified
Unspecified Unspecified Unspecified
Soil properties Name Soil 1 Soil 2 Soil 3
Wet weight kN/m^3 15.0 17.0 19.0
Soil properties (undrained) Name Soil 1 Soil 2 Soil 3 Layers Name Layer 1 Layer 2 Layer 3
Dip OCR Tension (°) crack 0.0 1.0 Flooded Not rigid
3.00
Soil 2
0.0
1.0 Flooded Not rigid
20 50
Soil 3
00
1 0 Flooded Not rigid
Thickness (m)
Soil
Soil is not fissured Soil is not fissured Soil is not fissured
Job No Revision Page No 2 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Boreholes Name Borehole 1 Water Tables Name Water Table 1 Retaining Walls Name Retaining Wall 1
Depth Gradient Other Properties (m) (kN/m^3) 5.20 9.81Hydraulically connected to overlying water
Hydrostatic Water Table
Type Custom Wall
Depth of toe m 6.00
Retaining Wall sections Name Section Retaining Wall 1
Width = 0.191 m
Upstand m 0.00
Material Steel
Density kg/m^3 7800
Sectional area Moment of inertia cm^2/m cm^4/m 104 37050
Section modulus cm^3/m 1611
Design Standard Type = Custom Design Standard Earth pressure coefficients Type = Coulomb Tension crack limited to the retained height Cantilever toe-in = 20% Equilibrium calculated at the minimum safe embedment (with designated safety factors) Unfavourable Permanent (G) = 1.00 Variable (Q) = 1.00 Accidental (A) = 1.00 Favourable Permanent (G) = 1.00 Variable (Q) = 1.00 Accidental (A) = 1.00 Minimum surcharge = 20 kPa On shearing resistance = 1.00 On effective cohesion = 1.00 On undrained strength = 1.50 On effective earth pressures = 1.00 On total earth pressures = 1.00 Safety factor on resistance applied via: Gross passive pressures Minimum active pressure = 0.00 kN/m^3 Unplanned excavation = 10% of clear height, but minimum of 0.5m Softened formation = 0 m
E GPa 210.0
Job No Revision Page No 3 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Design Standard [Continued] On bending moments = 1.00 On shear forces = 1.00 On prop forces Short-term = 1.00/1.00 Long-term = 1/1
Job No Revision Page No 4 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Construction Stage 1 - Drawing Board 15
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Job No Revision Page No 5 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Construction Stage 1 - Earth Pressures As Built 15
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Job No Revision Page No 6 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Construction Stage 1 - Earth Pressures At Minimum Safe Embedment 15
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Job No Revision Page No 7 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Construction Stage 1 - Structural Forces 15
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Largest factored bending moment = -65.3 kNm/m Largest factored shear force = -167.6 kN/m 0
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Job No Revision Page No 8 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Construction Stage 1 - Displacements 15
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Max. settlement Upper = 14 mm Average = 1 mm Lower = 7 mm
Max. horizontal movement Upper = 19 mm Average = 14 mm Lower = 10 mm
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Job No Revision Page No 9 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Construction Stage 1 - Earth Pressures As Built Depth EarthPr WaterPr m kPa kPa Retained Retained 0.00 6.20 0.00 2.00 15.49 0.00 2.00 11.35 0.00 3.00 15.21 0.00 3.00 15.21 0.00 3.09 15.56 0.00 3.09 15.56 0.00 5.00 22.94 0.00 5.00 16.49 0.00 5.10 16.80 0.00 5.10 16.80 0.00 5.20 17.11 0.00 5.20 17.11 0.00 5.50 17.56 2.94
Job No Revision Page No 10 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Construction Stage 1 - Required Embedment As Built Results of earth pressure calculation Retaining Wall Name = Prototype: Retaining Wall 1 Retained height = 3.00 m Depth of toe = 6.00 m Partial factors Factors on actions Unfavourable Permanent (G) = 1.00 Variable (Q) = 1.00 Accidental (A) = 1.00 Favourable Permanent (G) = 1.00 Variable (Q) = 1.00 Accidental (A) = 1.00 Minimum surcharge = 20 kPa Factors on material properties On shearing resistance = 1.00 On effective cohesion = 1.00 On undrained strength = 1.50 Factors on resistance On effective earth pressures = 1.00 On total earth pressures = 1.00 Safety factor on resistance applied via: Gross passive pressures Minimum active pressure = 0.00 kN/m^3 Safety margins on geometry Unplanned excavation = 10% of clear height, but minimum of 0.5m Softened formation = 0 m Factors on structural forces On bending moments = 1.00 On shear forces = 1.00 On prop forces Short-term = 1.00/1.00 Long-term = 1/1 Moments Overturning = 191 kNm/m Restoring = 553 kNm/m Out-of-balance = -362 kNm/m Restoring/Overturning = 290 % Reaction at wall toe = -881.2 kN/m
Job No Revision Page No 11 Engineer Date 8/5/2017 Checked Document: C:\Users\User\Desktop\New folder\larntou\reward_2.5m.RWD ReWaRD 2.5 Update 21 Licensed to: Construction Stage 1 - Required Embedment At Minimum Safe Embedment Results of earth pressure calculation Retaining Wall Name = Prototype: Retaining Wall 1 Retained height = 3.00 m Depth of toe = 4.97 m Partial factors Factors on actions Unfavourable Permanent (G) = 1.00 Variable (Q) = 1.00 Accidental (A) = 1.00 Favourable Permanent (G) = 1.00 Variable (Q) = 1.00 Accidental (A) = 1.00 Minimum surcharge = 20 kPa Factors on material properties On shearing resistance = 1.00 On effective cohesion = 1.00 On undrained strength = 1.50 Factors on resistance On effective earth pressures = 1.00 On total earth pressures = 1.00 Safety factor on resistance applied via: Gross passive pressures Minimum active pressure = 0.00 kN/m^3 Safety margins on geometry Unplanned excavation = 10% of clear height, but minimum of 0.5m Softened formation = 0 m Factors on structural forces On bending moments = 1.00 On shear forces = 1.00 On prop forces Short-term = 1.00/1.00 Long-term = 1/1 Moments Overturning = 127 kNm/m Restoring = 127 kNm/m Out-of-balance = 0 kNm/m Restoring/Overturning = 100 % The wall is in equilibrium Reaction at wall toe = -167.6 kN/m
Construction Stage 1: Structural Forces Depth Bending Shear Force Prop Force Notes (m) Moment (kN/m) (kN/m) (kNm/m) 3.75 -65.3 -1.0 See aboveMaximum bending moment 4.64 -1.7 -167.6 See aboveMaximum shear force Construction Stage 1: Displacements Max horz Max horz
Max horz
Max sett
Max sett
Max sett
GEOFOUNDATION
Project
GROUP P.O. BOX 84602
Client
DUBAI UAE
Plot No.
email: gfg.eim.ae
Location
Dubai Expo 2020 Metro Extensio Project (Power Stations) Made by DEWA/RTA bj Section 1 Dubai UAE
