Ⅱ类场地土和结构相互作用地震反应分析  

Seismic Response Analysis of Soil-structure Interaction on Site Type Ⅱ

作　　者：雷素素 高永涛[1] 潘旦光[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《科学技术与工程》2015年第32期65-69,共5页Science Technology and Engineering

基　　金：国家自然科学基金(51078032);北京市自然科学基金(8143037)资助

摘　　要：为了研究考虑土和结构相互作用对Ⅱ类场地上的结构地震反应的影响,建立了三个不同输入形式的结构地震反应分析模型。通过三条地震波激励下,计算不同输入形式下结构的位移和内力反应峰值的变化,说明了不同土层特性对结构地震反应的影响。结果表明:Ⅱ类场地土土层中的结构抗震计算也应该考虑土和结构相互作用;土层剪切波速对结构响应的影响并无一致变化规律;覆盖层厚度越大,结构顶点位移和基底剪力随之增大;相同周期的土层上的结构响应并不一致。In order to study the impact of soil-structure interaction on structural seismic response on the site typeⅡ,three different input forms of structural seismic analysis models are established. Under three seismic excitations,the changes of structural displacement and internal force peaks at different input forms are calculated,indicating the effect of different soil characteristics on the seismic response. The results showed that soil-structure interaction should be considered in structural seismic calculations on site typeⅡ; the impact of soil shear wave velocity on the structural response has no consistent variation; the structural top displacement and base shear increases with the thickness of the cover layer; the seismic response of the structure on the site with the same period is not consistent.

关 键 词：Ⅱ类场地 地震反应 土和结构相互作用 

分 类 号：TU43[建筑科学—岩土工程]