用Opensees进行IDA分析(桥墩模型命令流)

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1、wipe#Openseesdandun##Units:kN,m,sec#-----------------#Startofmodelgeneration#-----------------#CreateModeBulider(withtwo-dimensionsand3DOF/node)modelbasic-ndm2-ndf3#-----------------#tagXYnode10.00.0node20.00.0node30.02.0node40.04.0node50.06.0node60.08.0node70.010.0node80.012.

2、0node90.014.0node100.016.0node110.018.0node120.020.0#-----------------#Fixsupportsatbaseofcolumns#tagDXDYRZfix1111#----------------#Concretetagfcec0fcuecu#Coreconcrete(confined)uniaxialMaterialConcrete011-25600.0-0.00219-17780.0-0.01#Coverconcrete(unconfined)uniaxialMaterialCo

3、ncrete012-23400.0-0.002-0.0-0.006#STEEL#Reinforcingsteelsetfy400000.0;#YieldstresssetE200000000.0;#Young'smodulus#tagfyE0buniaxialMaterialSteel023$fy$E0.0118.50.9250.15uniaxialMaterialElastic1129043600uniaxialMaterialElastic1212326600uniaxialMaterialElastic13587247596#Definecr

4、oss-sectionfornonlinearcolumns#---------------------#setsomeparameterssetcolWidth8.18setcolDepth4.28setcover0.05setAs0.00049#somevariablesderivedfromtheparameterssety1[expr$colDepth/2.0]setz1[expr$colWidth/2.0]sectionFiber1{#Createtheconcretecorefiberspatchrect12030[expr$cover

5、-$y1][expr$cover-$z1][expr$y1-$cover][expr$z1-$cover]#Createtheconcretecoverfibers(top,bottom,left,right)patchrect2205[expr-$y1][expr$z1-$cover]$y1$z1patchrect2205[expr-$y1][expr-$z1]$y1[expr$cover-$z1]patchrect2510[expr-$y1][expr$cover-$z1][expr$cover-$y1][expr$z1-$cover]patc

6、hrect2510[expr$y1-$cover][expr$cover-$z1]$y1[expr$z1-$cover]#Createthereinforcingfibers(left,middle,right)layerstraight3175$As[expr$y1-$cover][expr$z1-$cover][expr$y1-$cover][expr$cover-$z1]layerstraight3175$As[expr$cover-$y1][expr$z1-$cover][expr$cover-$y1][expr$cover-$z1]lay

7、erstraight3115$As[expr$y1-$cover][expr$z1-$cover][expr$cover-$y1][expr$z1-$cover]layerstraight3115$As[expr$y1-$cover][expr$cover-$z1][expr$cover-$y1][expr$cover-$z1]}#Definecolumnelements#----------------------#Geometryofcolumnelements#taggeomTransfLinear1#Numberofintegrationp

8、ointsalonglengthofelementssetnp5#CreatethecolumnsusingBeam-co