四层弹簧-质点模型的地震分析

发布日期:[08-12-04 12:05:46] 浏览人次:[]

包括频率分析,谱分析和时程分析
作者:陆新征,清华大学土木工程系
FINI
/CLEAR
/UNITS,SI
/PREP7
DAMPRATIO=0.02 !振型阻尼系数都为0.02
ET,1,BEAM188
KEYOPT,1,7,1
KEYOPT,1,8,1
ET,2,MASS21,,,4
MP,EX,1,210E9
MP,NUXY,1,0.3
MP,DENS,1,7800
MPDATA,DAMP,1,,DAMPRATIO
SECTYPE,3,BEAM,I
SECDATA,0.2,0.2,0.5,0.01,0.01,0.008
R,1,1.6E2,1.6E2
R,2,1.2E2,1.2E2
K,1,0,0,0
K,2,0,3,0
K,3,0,6,0
K,4,0,9,0
K,5,0,12,0
K,6,0,0,10000
L,1,2
L,2,3
L,3,4
L,4,5
LSEL,,,,1,4
LATT,1,0,1,,6,,3
ALLS
LESIZE,ALL, , ,3 , , , , ,1
LMESH,ALL
NUMMRG,ALL
NUMCMP,ALL
TYPE,2
REAL,1
E,2
TYPE,2
REAL,2
E,8
E,14
E,20
*SET,NT,1001
*SET,DT,0.02
*DIM,AC,,NT
*VREAD,AC(1),RECORD,TXT
(F8.3)
/SOLU
D,1,ALL,
ANTYPE,0
SOLVE
FINISH
/SOLU !模态分析
ANTYPE,2
MODOPT,SUBSP,8
MXPAND,8, , ,1
SOLVE
FINI
!得到自振频率1
*GET,FREQ1,MODE,1,FREQ
/ESHAPE,1.0
/SOLU
ANTYPE,SPECTR !谱分析
SPOPT,SPRS
MDAMP,1,DAMPRATIO, , , , , ,
SED,1
SVTYPE,2,1
FREQ,0.167,0.25,0.333,0.44444,0.5,0.667,1,1.25,1.667
SV,,0.154350625,0.191590625,0.210210625,0.224175625,0.250716714,0.329514922,0.484352764,0.598723486,0.786897371
FREQ,2.222,10,100000
SV,,1.034212766,1.034212766,0.3528
!按7度多遇地震,地震影响系数0.08 第一组III场地TG=0.45
SRSS,0.01,DISP
SOLVE
FINISH
/POST1
/INP,,MCOM
NSORT,U,SUM
*GET,DMAX_SPE,SORT, ,MAX !反应谱最大变形
!开始地震计算
FINISH
/CONFIG,NRES,20000
/SOLU
ANTYPE,TRANS
TRNOPT,FULL
ALPHAD,2*DAMPRATIO*FREQ1*2*3.1415926
BETAD,2*DAMPRATIO/(FREQ1*2*3.1415926)
*DO,I,1,1001
ACEL,AC(I),0,0
TIME,I*0.02
OUTRES,ALL,ALL
SOLVE
*ENDDO
FINISH
/POST26
FILE
NSOL,2,20,U,X,
PLVAR,2, , , , , , , , , ,
STORE,MERGE
XVAR,1
PLVAR,2,
*GET,DMAX_TRANS,VARI,2,EXTREM,VMAX, , ! 时程分析最大位移
数据文件
record.txt
-0.0014
-0.0108
-0.0101
-0.0088
-0.0095
-0.012
-0.0142
-0.0128
-0.011
-0.0085
-0.0085
-0.0131
-0.0176
-0.0194
-0.0162
-0.0144
-0.0108
-0.0082
-0.0042
-0.0066
-0.0131
-0.019
-0.0196
-0.0066
0.003
0.0141
-0.0049
-0.0128
-0.0144
-0.0203
-0.026
-0.0325
-0.0306
-0.0172
-0.0197
-0.0163
-0.0164
-0.0067
0.0025
0.015
0.0236
0.0252
0.0336
0.0463
0.0492
0.0419
0.0359
0.0271
0.0235
0.0339
0.0412
0.053
0.0639
0.0732
0.0652
0.0599
0.04
0.04
0.0063
-0.0515
-0.0787
-0.0603
-0.0484
-0.025
-0.0059
0.0134
0.0308
0.0499
0.071
0.0995
0.1219
0.1529
0.1449
0.1155
0.0935
0.0892
0.0926
0.0839
0.0901
0.0993
0.1209
0.0328
-0.1475
-0.2066
-0.1989
-0.2034
-0.1816
-0.1725
-0.1752
-0.1753
-0.1805
-0.163
-0.1347
-0.1087
-0.0782
-0.0429
-0.0017
0.036
0.0785
0.1164
0.1598
0.196
0.2412
0.2729
0.3036
0.32
0.3417
0.2821
0.2324
-0.1198
-0.2373
-0.164
-0.1865
-0.1095
-0.0753
-0.0173
0.0113
0.0533
0.0895
0.1186
0.1757
0.0576
-0.2631
-0.1547
-0.1729
-0.1012
-0.0579
0.0237
-0.067
-0.198
-0.1641
-0.1685
-0.1481
-0.1231
-0.1001
-0.0751
-0.0523
-0.0271
-0.0044
0.0188
-0.0095
-0.0433
-0.0838
-0.0951
-0.0716
-0.05
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本文关键字:四层弹簧  质点  模型  地震  分析
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