Staad Pro-Modeling of a Grid Beam

MODELING OF A GRID BEAM STRUCTURE Data :

Length : 15m Height : 6m with two bays each 3.0m height Width :15m

 1.Geometry Creation :

New Project

 Select  Space nits:

#ile Name!gri% beam mo%el (eometry

)*n

 Ne&t.

Length !meters" #orce!$N" #orce!$N"

Select  '%% beam

#inish.

str*ct*re +i,ar%Select #rame mo%els -rom r*ss

mo%el Length /!15m

No. o- ays!1

ach ay!15m

Height 2!6m

No. o- ays!

ach ay!3m

+i%th 4!15m

No. o- ays!1

 rans-er  'pply  rans-er

o%el 2es  2es

Paste Prototype o%el /!0 2!0 4! 07. (eometry

Str*ct*re

wi,ar%

Select

-rame o%els8lic7 9oor (ri% an%

%o*ble clic7 on it. Length /!15m No. o- ays along Length! +i%th 4!15m 4!15m No. o- ays along +i%th! 8lic7 )e-erence )e-erence point

 Speci-y

 rans-er 2es  2es7. 'pply  rans-er

)e-erence point

7.

ar7 the )e-erence point in the ay -rame 7;*plicate eams ignore% 7. Select the alro*n% bracing beam in the i%%le o- col*mn ;elete < eams an% 'ssociate% Physical eam=s> =i- any> will be %elete%

7.

Select the 8ol*mn member (eometryerge Selecte% memberserge8lose. Similarly select other col*mns (eometry erge

Selecte% emberserge8lose. Select the whole gri% 8lic7

Plate c*rsor?1 New plate=s> are create%7.

#ig. 1 (eometry o- (ri% mo%el 2. Member Property :

8lic7 (eneral

 

Property

;e@ne )ectangle

4;!0.50m=8ol*mn> '%%. 2;!0.<5 eam>

 '%%  2;!0.3?

4;!0.30

2;!0.50m

4;!0.30 ='llAro*n% o*ter

'%%8lose.

(o to #ront Biew.

Highlight 2;!0.50 4;!0.50 C Select the col*mn by win%owing  'ssign

to selecte% beam

Select the op beam



 'ssign 2es.

 New

DiewPlan BiewHighlight 2;!0.<5

4;!0.30Select the all < si%es o- o*ter beamsE inner portion o-
 'ssign

to selecte%

 'ssign 2es

Highlight 2;!0.3? 4;!0.30 Property  'ssign

Select y

issing 'ttrib*tes issing



to selecte% beam

 'ssign 2es

 hic7ness No%e 1E E 3 C
'%%.

Highlight thic7ness!0.1m C *sing plate c*rsor select entire str*ct*re 'ssign to selecte% beam

 'ssign 2es  8lose.



 #ig.  'ssigning property -or alro*n% periphery o- beam 2;!.<5 4;!0.30 3. Spport! :

8lic7 S*pport  8reate  #i&e% '%%. Highlight s*pport  an% select bottom most no%es o- col*mn by win%owing *sing no%e c*rsor  'ssign to selecte% no%es  'ssign 2es  8lose  ;e select the no%es an% change to beam c*rsor.  ". Loa#$%& :

Loa% C %e@nitions  Primary

8lic7

N*mber

Loa% case ;etails

'%%.

1 Loa%ing type: none itle: Loa% case 1

8lic7 Loa% case 1 %etails

 '%%

.

'%%.

 Sel- weight  2 #actor!A1

'%%.

Plate loa%sPress*re on #*ll Plates +1!A1.5 $NGm =0.50$NGm as +ater proo@ng loa% an% 1.0$NGm  as LiBe Loa% -or )oo-> Highlight sel-weight

Select

(2 '%%.

*sing geometry c*rsor C select entire

str*ct*re  'ssign to selecte% beamGplates

 'ssign 2es.

Highlight Plate Loa% press*re on -*ll plates +!A1.5 $NGm  . sing Plate c*rsor Select op portion o- (ri%

 'ssign

to selecte% plates



'ssign 2es 8lose.

'. A%a(y!$! :

8lic7 'nalysisGprint



No

print



'%%  8lose.

Note: SaBe the #ile be-ore )*n the Program. ). Per*orm A%a(y!$! :

#rom ain en*

 I

'nalysis

 )*n

'nalysis

 

;one.

+.Re!(t! :  (o

to post processing mo%e.

Select loa% case 1 See ;e9ection

 'pply 7.

Highest

%e9ection!?3.36mm .

;: 8lic7 4 an% see the ; ;iagram. 'lso clic7 (raph an% see the ; at mi% span an% s*pport. 'll ; are seems to be higher Bal*e. o re%*ce the ; intro%*ce stiJener by stiJening the 8ol*mn an% beam.

#ig. 3 en%ing moment ;iagram

(o to mo%eling mo%e Ksometric Biew all col*mns

 8opy paste

 Select

no%es 2!.0m

all the < no%es on top o-

7.

2o* haBe ma%e a

change to the str*ct*reE post processing res*lt will no longer aBailable. ;o yo* want to all res*lt @les

yes.

'%% beam oin the col*mn no%e to (ri% 3 r% No%e =secon% (ri% portion en% no%e> (iBe some property to this bracing. Select 0.3? & 0.30 =Property 3>

 Select y

'ssign to selecte% plates 'nalysis

)*n

;isplacement (raphics.

issing 'ttrib*tes

 'ssign 2es.

issing

property



'gain )*n the 'nalysis.

'nalysis;one. (o to post Processing mo%e. Select

loa% case 1 7. 8lic7 4 icon an% 8lic7 eam

he o*ter eam ; at i% span earlier it is 31 $N.m an%

now it becomes 11 $N.m. 't S*pport ; is 55$Nm. Select i% beam inner portion o- (ri% at i% span ; is 10 $Nm earlier an% it becomes ?F $Nm now. Now yo* can ;esign the beam an% col*mn members. ;esign: 8lic7 ;esign

8oncrete KS

Parameters #c!5000$NGm  ;esign

<56;e@ne

'%%. 8omman%s;esign

eam

'%%.

o- col*mn  '%%.

Highlight #c!5000$NGm an% select entire str*ct*re  'ssign. Highlight ;esign o- eam select the beam portion 'ssign. Highlight ;esign o- col*mn  select any one o- the col*mn assign. Now )*n the analysis an% see the )es*lt. ;o*ble clic7 the o*ter eam an% see the )ein-orcement ;etails an% %o*ble clic7 the inner portion o- the (ri% beam an% see the rein-orcement. 'lso %o*ble clic7 the partic*lat col*mn an% see the rein-orcement. Kn or%er to economise an% re%*ce the ;E yo* can also alter the position o- col*mn by shi-ting 0.50m on either en% o- beam on a%jacent beams by intro%*cing  col*mns on each corner space% at 0.5m apart an% intro%*cing stiJener similar to earlier an% giBing section as 0.<5 & 0.<5m an% giBing s*pportE )eBising sel-weight o- str*ct*reE %eleting concrete %esign an% )*n the 'nalysis once again an% compare the ; with earlier Bal*es.

#ig. < (raph

#ig. 5 i%span ; o- eams

 #ig. 6 a7ing stiJener to col*mn by joining the no%e to col*mn