《桥梁结构振动与抗震》动力电算分析

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1、静力分析程序计算一、斜拉桥模型基本信息：计算模型1、结构体系：半漂浮体系；2、主梁：单元号1-23（1）跨径：中跨：100m；边跨：50m；（2）截面参数：换算截面：A=58.8m2,惯性矩：I=2.20m4,每延米重：BRO=-180.00KN/m3、塔墩：双塔，单元号24-37（1）索塔高30m，塔跨比为1/3.33，墩高20m（2）截面参数：换算截面：A=12.00m2,惯性矩：I=4.58m4,每延米重：BRO=-335.46KN/m4、斜拉索：单元号38-57（1）竖琴形单索面形式，索

2、距：主梁8m，索塔6m；（2）截面参数：换算截面：A=0.200m2,每延米重：BRO=-10.00KN/m二、程序修改部分：（1）结构参数NJ=40,NE=57,N=111,UBW1=12,NB1=9,NJX=120,M=6DATAIO/20,17,14,11,8,5,4,7,10,13,16,19,22,25,28,31,34,37,36,33,第28页共28页$30,27,24,1,2,3,6,9,12,15,40,39,38,35,32,29,26,$17,14,11,8,5,19,16

3、,13,10,7,24,27,30,33,36,22,25,28,31,34/DATAJO/17,14,11,8,5,4,7,10,13,16,19,22,25,28,31,34,37,36,33,30,$27,24,21,2,3,6,9,12,15,18,39,38,35,32,29,26,23,$18,15,12,9,6,18,15,12,9,6,23,26,29,32,35,23,26,29,32,35/DATARL1/1,2,3,58,59,62,118,119,120/DATAX/-5

4、0,-50,-50,-50,-58,-50,-42,-66,-50,-34,-74,-50,-26,$-82,-50,-18,-90,-50,-10,-100,100,10,50,90,18,50,82,$26,50,74,34,50,66,42,50,58,50,50,50,50/DATAY/-20,-10,0,0,0,6,0,0,12,0,0,18,0,0,24,0,0,30,0,0,0,$0,30,0,0,24,0,0,18,0,0,12,0,0,6,0,0,0,-10,-20/（1）修改

5、对应的截面参数，并前后统一；（2）子程序1)平面梁单元和铰接杆单元刚度矩阵BEMK、ROADK：REALX(40)Y(40)2)自重荷载作用下的等价集中力BEMLOAD：SUBROUTINEBEMLOD(BRO,L,XM,XN,PF1,PF2,IAA)其中梁单元IAA=1.0，铰接杆单元IAA=0.0;（5）主程序1）整体刚度矩阵和荷载等价集中力列阵:塔墩：IZ=4.58AX=12.00BRO=-335.46CALLBEMK(IO,JO,KE,I1,J1,YE,AX,IZ,NE,F,L,LX,L

6、Y,X,Y,XM,XN)CALLBEMR(LX,LY,L,R,RT)CALLBEMLOD(BRO,L,XM,XN,PF1,PF2,1)CALLAAXA(RT,PF1,PF2,M)CALLAAXAA(KE,R,KR,M)CALLAAXAA(RT,KR,KS,M)斜拉索：AX=0.20BRO=-10.0DO170I=1,6DO170J=1,6KS(I,J)=0.0170CONTINUECALLRODK(IO,JO,KE,I1,J1,YE,AX,NE,F,L,LX,LY,X,Y,XM,XN)CALLB

7、EMR(LX,LY,L,R,RT)CALLBEMLOD(BRO,L,XM,XN,PF1,PF2,0)CALLAAXA(RT,PF1,PF2,M)CALLAAXAA(KE,R,KR,M)CALLAAXAA(RT,KR,KS,M)2）计算单元力塔墩：AX=12.00第28页共28页IZ=4.58BRO=-335.46CALLBEMK(IO,JO,KE,I1,J1,YE,AX,IZ,NE,F,L,LX,LY,X,Y,XM,XN)CALLBEMR(LX,LY,L,R,RT)CALLBEMLOD(BRO,

8、L,XM,XN,PF1,PF2,1)CALLELMFOC(F,NE,R,XV,A,PF1,KE,I1,J1,M,NJX)斜拉索：AX=0.200BRO=-10.00CALLRODK(IO,JO,KE,I1,J1,YE,AX,NE,F,L,LX,LY,X,Y,XM,XN)CALLBEMR(LX,LY,L,R,RT)CALLBEMLOD(BRO,L,XM,XN,PF1,PF2,0)CALLELMFOC(F,NE,R,XV,A,PF1,KE,I1,J1,M,NJX)三、计算主程序：PLANEANALY