土-结构体系的分枝模态与约束模态混合二步法-地震工程与工程振动.PDFVIP

30 4 V o.l 30 N o. 4 20 10 8 JOURNAL OF EARTH QUAKE ENG IN EER ING AND ENG INEER ING V IBRAT ION A ug. 2010 : 1000- 1301( 20 10) 04- 0024- 07 - 王菲, 姜忻良 ( / ( ), 300072 ) : - , - , - , - , , - , , , , - , - : - : TU 311. 4 : A Analysis of soi-l structure interaction system based on m ixed branch mode and constrainedm ode two-stepm ethod WANG F e,i JIANG X inliang ( Schoo l of C iv il Engineering, T ian jin U n iv ersity /K ey L aboratory of Coastal C iv il Engin eering St ru cture and S afety ( T ian jin U n iv ersity) , M in istry of Educat ion, T ian jin 300072, Ch in a) Abstract: In order to introdu ce the effect of non linear so i-l stru cture interact ion during the stru cture design process, based on the branch m ode synthesis m ethod and the m ixed linear-nonlinear constra ined m ode synthesism ethod, the m ixed branch m ode and con stra ined m ode m ethod su itab le fo r non- linear so il-stru cture in teract ion system is pro- posed. The m ateria l non linearity o f stru cture and so il cou ld be con sidered e ffectively by using th ism ethod, and it is easier to in sp ect the influence o f so il-structure in teract ion on sup erstru cture. Furtherm ore, a m ixed wt o- step m ethod is a lso proposed on the basis of the m ixed branch m ode and con strained m ode m ethod and app lied to the seism ic analysis of soil-fram e interaction system. T he results ind icate th at the m ixed wt o-step m ethod cou ld analyze super- structure and so il separately in considerati