时程分析实例

1、时程分析实例finish/clear/filename,ex6-1!设定工作名/title,TheDynamicAnalysisoftheBridge!设定工作标题/prep7块F*!定义单元类型及单元实常数!*Et,1,beam4Et,2,shell63Et,3,link10!定义梁单元实常数*dim,BBS,43几何特征的数组*dim,HHS,43*dim,SSS,43!进入前处理模!定义单元类型!初始化描述塔上部截面*dim,IIYYS,43*dim,IIZZS,43*do,i,1,43BBS=1.5*(i-1)/42+3HHS(i)=(i-1)/21+3SSS(i)=BBS(i)*HH

2、S(i)IIzzS(i)=BBS(i)*HHS(i)*3/12IIyyS(i)=HHS(i)*BBS(i)*3/12*enddo!*dim,BS,42特征的数组*dim,HS,42*dim,SS,42*dim,IYYS,42*dim,IZZS,42*do,i,1,42hS(i)=(hhS(i)+hhS(i+1)/2bS(i)=(bbS(i)+bbS(i+1)/2SS(i)=(SSS(i)+SSS(i+1)/2IYYS(i)=(IIYYS(i)+IIYYS(i+1)/2!通过DO循环对数组赋值!DO循环赋值结束!初始化描述塔上部截面平均!通过DO循环对数组赋值IZZS(i)=(IIZZS(i)+

3、IIZZS(i+1)/2*enddo!DO循环赋值结束*dim,BBX,80特征的数组*dim,HHX,80*dim,SSX,80*dim,IIYYX,80*dim,IIZZX,80!*do,i,1,80值BBX(i)=2.5HHX(i)=(i-1)*4.7164/79+5SSX(i)=BBX(i)*HHX(i)IIzzX(i)=BBX(i)*HHX(i)*3/12IIyyX(i)=HHX(i)*BBX(i)*3/12*enddo!*dim,BX,79征的数组*dim,HX,79*dim,SX,79!初始化描述塔下部截面几何!通过DO循环对数组赋!DO循环赋值结束!初始化描述塔下部截面平均特*

4、dim,IYYX,79*dim,IZZX,79* do,i,1,79!通过DO循环对数组赋值BX(i)=(BBX(i)+BBX(i+1)/2HX(i)=(HHX(i)+HHX(i+1)/2SX(i)=(SSX(i)+SSX(i+1)/2IYYX(i)=(IIYYX(i)+IIYYX(i+1)/2IZZX(i)=(IIZZX(i)+IIZZX(i+1)/2* enddo!DO循环赋值结束!* do,i,1,42!定义塔上部单元实常数r,i,SS(i),IZZS(i),IYYS(i),bS(i),hS(i)*enddo!* do,i,43,114!定义塔下部单元实常数r,i,SX(i-42),IZ

5、ZX(i-42),IYYX(i-42),bX(i-42),hX(i-42)*enddo!定义壳单元实常数r,115,1,!定义桥面-1单元实常数r,116,4,!定义桥面-2单元实常数r,117,1,!定义桥面-3单元实常数!定义索单元实常数*dim,cable_strain_bs,2cable_strain_bs(1)=3.978873577e-3cable_strain_bs(2)=3.978873577e-3!R,118,0.031416,cable_strain_bs(1)R,119,0.031416,cable_strain_bs(2)!*dim,cable_strain_zs,11

6、数组cable_strain_zs(1)=2.419155135e-3380cable_strain_zs=2.419155135e-3380cable_strain_zs(3)=2.2918311805e-3360cable_strain_zs(4)=2.2918311805e-3360cable_strain_zs(5)=2.228169203e-3!定义背索单元实常数数组!定义初始应变（预应力）2500!定义初始应变（预应力）2500!定义背索单元实常数!定义主索单元实常数!定义主索初始应变（预应力）!定义主索初始应变（预应力）!定义主索初始应变（预应力）!定义主索初始应变（预应力）!定

7、义主索初始应变（预应力）350!定义主索初始应变（预应力）!定义主索初始应变（预应力）!定义主索初始应变（预应力）!定义主索初始应变（预应力）!定义主索初始应变（预应力）!定义主索初始应变（预应力）!定义主索实常数!定义桥面与塔的连接梁单!定义塔上部材料特性cable_strain_zs(6)=2.228169203e-3350cable_strain_zs(7)=1.909859317e-3300cable_strain_zs(8)=1.65521141e-3260cable_strain_zs(9)=1.65521141e-3260cable_strain_zs(10)=1.4005634

8、0e-3220cable_strain_zs(11)=1.273239545e-3200!*do,i,120,130R,i,0.007853982,cable_strain_zs(i-119)*enddo!定义桥面与塔连接单元实常数r,131,16,21.3333,21.3333,4,4元实常数!定义材料参数mp,ex,1,3.4e10mp,prxy,1,0.3!定义桥面材料特性mp,dens,1,2.5e3!定义背索材料特性MP,EX,2,3.5e10mp,prxy,2,0.3MP,DENS,2,2.5e3!MP,EX,3,2e11mp,prxy,3,0.3MP,DENS,3,7.85e3产

9、*!生成关键点I*!定义桥塔的关键点*do,i,54.5,33.5,-0.5!生成塔上部关键点k,110-i*2,-(82.1495+i)/7.403322,i,0*do,i,33,0,-0.5*enddo!生成塔下部关键点k,110-i*2,-15.6213*i/33.5,i,7.4839*i/33.5-7.4839*enddo*do,i,-0.5,-2.5,-0.5k,110-i*2,-2.7978*i/6,i,-i/2-7.4839*enddo*do,i,33,0,-0.5k,182-i*2,-15.6213*i/33.5,i,-7.4839*i/33.5+7.4839*enddo*do

10、,i,-0.5,-2.5,-0.5k,182-i*2,-2.7978*i/6,i,i/2+7.4839*enddo!定义桥面关键点(其中配跨为曲线)k,192,-2,0,-6!生成左配跨关键点k,193,0,0,-6k,194,2,0,-6k,195,9,0,-6!*do,i,196,205!生成左桥面关键点k,i,(i-195)*9+9,0,-6*enddok,206,105,0,-6!k,207,-2,0,6!生成右配跨关键点k,208,0,0,6k,209,2,0,6*do,i,211,220!生成右桥面关键点k,i,(i-210)*9+9,0,6*enddok,221,105,0,6!

11、定义背索锚碇关键点k,222,-31,0,14k,223,-31,0,-14产*!划分网格，生成单元!*!划分塔上部网格!在两个关键点之间生成线!不选已定义属性的线!指定线的材料编号、实常数编号、单*do,i,1,42l,i,i+1lsel,u,type,1,131latt,1,i,1,元类型号lesize,all,1,1!设定线的分割lmesh,all,all!对线划分网格!选择全部图元!DO循环结束标志!划分塔下部-近朝网格!划分塔下部-远朝网格alls*enddo!*do,i,43,114l,i,i+1lsel,u,type,1,131latt,1,i,1,lesize,all,1,1l

12、mesh,all,allalls*enddo!l,43,116lsel,u,type,1,131latt,1,43,1,lesize,all,1,1lmesh,all,allalls!*do,i,116,186l,i,i+1lsel,u,type,1,131latt,1,i-72,1,lesize,all,1,1lmesh,all,allalls*enddo!l,9,222!划分背索网格lsel,u,type,1,131latt,3,118,3,lesize,all,1,1lmesh,all,allalls!l,9,223lsel,u,type,1,131latt,3,119,3,lesize

13、,all,1,1lmesh,all,all*do,i,1,11alls!划分主索网格l,i*4+1,209-il,i*4+1,221-ilsel,u,type,1,131latt,3,i+119,3,lesize,all,1,1lmesh,all,allalls*enddo!l,110,193!划分桥面与塔的连接处网格l,182,208lsel,u,type,1,131latt,3,131,1,lesize,all,1,1lmesh,all,allalls!wproat,0,-90,0!划分桥面网格cyl4,-5.6695,-70,76,90,64,118.09989655,0wproat,0

14、,90,0a,188,192,207,191lsel,u,type,1,131aatt,2,115,2,lesize,all,2,2lesize,213,2,2lesize,214,2,2lesize,215,2,2lesize,216,2,2lesize,217,4,2lesize,218,2,2lesize,219,4,2allsamesh,all!a,192,193,208,207处网格a,193,194,209,208lsel,u,type,1,131aatt,2,116,2,lesize,all,2,1alls!划分左桥面网格!划分桥面交界amesh,all!划分右桥面网格a,i+1

15、93,i+194,i+209,i+208*enddolsel,u,type,1,131aatt,2,117,2,lesize,all,2,1allsamesh,allsavefinish产*!加载、求解!*/SOLUd,115,all!在节点施加位移约束d,187,alld,188,alld,189,alld,235,uyd,239,uyd,280,uyd,292,uyd,735,uyd,739,uyacel,10产*!模态分析模块!*antype,modalmodopt,subsp,20solvesave,rst11,dbfinish!*!反应谱分析模块!*/soluAntype,spect

16、rSpopt,sprs,20,yesSvtype,2!施加重力加速度!设定模态分析类型!设定模态分析选项!设定谱分析类型!设定谱分析选项!设定单点响应谱类型!设定激励方向Sed,1,1,Freq,0.1181,0.1228,0.1436,0.1576,0.1629,0.1639,0.1761,0.2197,0.22730.2358,0.2588,0.2674,0.3209,0.3478,0.3739,0.4002,0.4938,0.7503,1.3831,1.5370设定频率数值Sv,0.08,0.08,0.08,0.08,0.08,0.08,0.08,0.08,0.08,0.08,0.08,

17、0.08,0.08,0.08,0.08,0.07996,0.0662,0.0454,0.0262,0.0238!设定频谱数值SolveSave,rst2,dbFinish*模态扩展*/soluAntype,modalExpass,onMxpand,20,yes,0.005Solve!设定模态分析类型!打开模态扩展!设定模态扩展选项Save,rst3,dbFinishI*合并模态*/solu!设定谱分析类型!设定模态合并选项!进入时间历程后处理器!定义节点2X方向位移为变量2!定义节点2Y方向位移为变量3!定义节点400X方向位移为变量4!定义节点400Y方向位移为变量5!存储定义的变量!图形显

18、示变量2、3、4、5!初始化horizon数组!初始化vertical数组!宏开始标识Antype,spectrSrss,0.02,dispSolveSave,rst4,dbFinish/post26查看结果Nsol,2,2,u,x,ux_2Nsol,3,2,u,y,uy_3NSOL,4,400,U,X,UX_4NSOL,5,400,U,Y,UY_5STORE,MERGEPLVAR,2,3,4,5,FinishF*!地震波瞬态分析模块!*DIM,horizon,ARRAY!,50,0,*DIM,vertical,ARRA,2,50,0,*CREATE,ansuitmp*VREAD,horizon(1,1),'horizon','txt','',50,犊入horizon.txt文件数据到horizon数组(e9.3,e11.3)*END!设定数据读入格式!宏结束标识/INPUT,ansuitmp*CREATE,ansuitmp*VREAD,vertical(1,1),'vertical&a