考虑土-结构相互作用的地震反应谱  

Earthquake Response Spectrum of Considering Soil-Structure Interaction

作　　者：陈啸[1] 刘斌[1] 王宏伟[1] 张慧乐[1] 

机构地区：[1]东北大学资源与土木工程学院,沈阳110004

出　　处：《天津城市建设学院学报》2007年第1期9-12,17,共5页Journal of Tianjin Institute of Urban Construction

基　　金：辽宁省教育厅高等学校科研项目(2005343);建设部研究开发项目(06-K1-22)

摘　　要：利用集总参数法建立了土-结构相互作用模型,分析推导了该模型下的地震反应谱公式,通过实例计算,得出了相互作用体系在不同频率地震波作用下的反应谱曲线.研究结果表明:对于具有浅埋刚性基础的结构体系,相互作用后的地震响应值与现有反应谱理论计算值有明显的差异,结构地震反应在大部分结构周期范围内得到折减,而在特定结构周期范围内得到明显增强;同时,相互作用体系可吸收特定频率的地震波,但现有的反应谱理论没有体现这一有利作用.The soil-structure interaction model is established by using lumped parameter method and the earthquake response spectrum equation based on this model is deduced. Through the calculation of actual example, some response spectrum curves of interaction system under the action of earthquake wave of various frequencies are given. The results show that even during the same earthquake, for the structures with shallow buried rigid foundations, the response spectrums are obviously different from the present ones. Seismic response is discounted for many structures of various periods while it is enhanced for structures of some given periods. The results also show that interaction system can absorb the earthquake waves of specific frequency, which is not reflected in the present response spectrum theory.

关 键 词：土-结构相互作用 地震反应谱 集总参数法 等效阻尼比 

分 类 号：P315.8[天文地球—地震学]