赵海立
   （中铁第五勘察设计院集团有限公司，北京 102600）

[摘要] 利用有限元软件，对某铅芯橡胶支座隔震结构体系进行了数值模拟分析，主要分为考虑土．结相互作用和不考虑土-结相互作用两种情况。结果表明：在考虑了土-结相互作用之后，隔震结构的位移时程曲线比较平缓，层间位移幅值比不考虑土．结相互作用降低较多。
[关键词] 铅芯橡胶支座；基础隔震；土．结相互作用
中图分类号：TU398    文献标识码：A  文章编号：1002-848X(2012) Sl-0549-02

Simulation on soil-structure interaction for lead core rubber bearing isolations structure
Zhao Haili
( China Railway Fifth Survey and Design Institute Group Co.,  Ltd.,  Beijing 102600,  China)

Abstract: A lead core rubber bearing isolations structure was simulated and analyzed by finite element software. The calculation cases were mainly divided into considering the soil-structure interaction and not considering the soil-structure interaction. The results show that after considering the soil-structure interaction, the displacement time-history curve of base-isolation structure is gentle. The interlayer displacement amplitude is reduced more than that of not considering the soil-structure interaction.
Keywords: lead core rubber bearing; base isolation; soil-structure interaction