双向水平地震激励下结构隔震控制分析

摘要

通过数值模拟研究了地震作用下结构隔震控制研究.根据实际工程,利用国际通用软件SAP2000建立了结构三维有限元模型,对结构隔震前后进行了动力特性的分析,得到了结构的前六阶频率；根据Ⅰ、Ⅱ和Ⅲ类场地,选取了3条典型的地震波；介绍了隔震支座的参数选取和有限元模拟；运用时程分析方法,分别研究了不同地震作用下结构有无隔震的控制反应.%Isolation control for structure under earthquake action is studied by numerical simulation. A three-dimensional finite element model of structure is established by SAP2000 based on practical engineering , and dynamic characteristics are analyzed without and with seismic isolation, and first six natural vibration frequencies are obtained. Three typical seismic waves are selected based on Ⅰ、Ⅱ and Ⅲ soil types. The parameters selection and finite element simulation of isolation bearing are introduced, respectively. Using time history analysis method, the responses of the structure with and without isolation control under different seismic waves are investigated, respectively.