摘要
本文应用子结构法 ,分析了土 结构相互作用对线性基础隔震体系基频和结构反应的影响。分析模型中 ,上部结构取为具有埋置刚性基础的均质剪切梁式模型 ,地基取为均质、各向同性的粘弹性半空间。上部结构和刚性基础之间设置隔震层。通过对隔震体系反应的传递函数及基于FFT的地震时程反应的分析 ,讨论了地基土柔性、基础埋深和隔震层刚度对于基础隔震体系基频和结构反应的影响。
The effect of the soil-structure interaction on the dynamic behavior of a base-isolated system is studied It is analyzed by the substructure approach The superstructure is modeled as a uniform shear beam supported on a rigid foundation An isolated layer is set between the superstructure and the rigid foundation The foundation is imbedded in the soil That is represented by a uniform visco-elastic half space Moreover,the influences of the soil flexibility,the foundation depth,and the stiffness of an isolated layer on the dynamic behavior are discussed It is based on investigating the transfer function of the structure response to seismic input and the seismic time history response by FFT algorithm
出处
《土木工程学报》
EI
CSCD
北大核心
2001年第4期83-87,共5页
China Civil Engineering Journal
基金
北京市自然科学基金资助项目 (8992 0 0 3)
关键词
土-结构相互作用
基础隔震
粘弹性半空间
soil-structure interaction,base-isolated,visco-elastic half space
