地震动中控制钢筋混凝土框架非线性响应的小波分量-地震工程与工程.PDF

28 4 V o l. 28 N o. 4 200 8 8 JOURNAL OF EARTH QUAKE ENG INEER ING AND ENG IN EER ING V IBRAT ION A ug. 2008 : 1000-1301( 2008) 04- 0 106- 05 1 1 1, 2 曹永红, 曹 晖, 李英民 ( 1. , 400045 2. , 400045) : , , , , : : P3 15. 962 : A The dom inant wavelet components of earthquake excitation for the nonlinear responses of reinforced concrete fram es 1 1 1, 2 CAO Y onghong , CAO H u i , L I Y ingm in ( 1. C ollege of C iv il Engin eer ing, Chongq ing U n iv ers ity, C hongq ing 400045, Ch ina 2. K ey L aboratory of N ew T echn ique for C onstru ct ion of C ities in M ountain A rea, Chongq ing U n iv ersity, Chongq ing, 400045, C h ina) Abstract:W ave let tran sform w as utilized to decom pose an earthqu ake acce leration reco rd into severa l w avelet com- ponents. N onlinear tran sient analyses w ere carried out for two reinforced concrete fram es under exc itation s o f com b -i nation s of w avelet com ponents. It is found th at the w ave let com ponentsw h ich dom inate the stru ctural non linear re- sponses are the com ponents w ith low frequ enc ies near the fundam ental frequ encies o f the fram es. A ttention should be pa id to th is ch aracter istic when the records are selected for stru ctura l nonlinear tran sient ana lysis. K ey words: re in fo rced concrete fram e nonlinear ana lysis w avelet tran sform w avelet com ponent. [ 1, 2] , , , , , , , , , 1 [ 3] , L itt lew ood-Pa ley L-P , Y ( t) : 2007- 12- 20 : 2008- 03- 16 : ( C