土结构相互作用对铅芯橡胶支座隔震效果的影响.pdfVIP

30 3 Vol. 30 No. 3 2010 6 JOURNAL OF EARTHQUAKE ENG INEER ING AND ENGINEERING V IBRAT ION Jun. 2010 : 2010) 0301610 - 1, 2 1 刘海卿 , 邵志姣 ( 1. , 123000; 2. , 116024) : , - , - , - , , ANSYS, D- P , , - : ; - ; : P31 . 966 : A Influence of soilstructure dynam ic in teraction on isolation effect of leadrubber bearing 1, 2 1 LIU H aiqing , SHAO Zhijiao ( 1. School ofC ivil Engineering, L iaoning T echnicalUniversity, Fuxin 123000, China; 2. School ofC ivil Hydraulic Eng ineering, D alian University of Technology, Dalian 116024, China) A bstract: M ost of the existing theories for isolation are based on rigid foundation assumptions and ignore soilstruc ture interaction. Due to the flexibility and the infin ity of the foundation soil, soilstructure interactionw illhave a d i rect mi pact on the baseisolatied system and therefore it is necessary to consider the dynam ic soilstructure interac tion on the isolation effect. In this paper, the soil is considered to be a homogeneous, isotropic viscoelastic half space, w ith the equ ivalent b ilinear restoring force model smi ulating the nonlinear leadrubber bearing, and the sin glemassm echan icalmodel is bu ilt and the equation ofmotion of the baseisolated system is derived. F inally, w ith the help of theANSYS sofwt are, by using DP materials to consider thematerial nonlinearity of soil and by using the contact element to smi ulate the contact of nonlinear dynam ic interactio