摘要
本文研究土-结构动力相互作用对基础隔震的影响。文中根据间接边界元方法,推导了空间域中的格林函数公式,并建立了地基土的动力刚度矩阵;进而在频域内采用子结构法,建立了考虑土-结构动力相互作用的隔震结构的运动方程;通过数值仿真某具有埋置刚性基础的剪切型基础隔震结构的地震反应,分析了地基土的刚度对隔震效果以及结构地震反应的影响,得到了一些有意义的结论。
In this paper, the study of the influence of soilstructure dynamic interaction on base isolation is performed. Based on the indirect boundary element method, the Green′s functions and the dynamic impedance matrix in space domain are obtained. By means of the substructure approach in the frequency domain, equations of motion of the baseisolated structures are established considering the soilstructure dynamic interaction. The seismic responses of a sheartype baseisolated structure with an embedded rigid rectangular foundation are numerically simulated, and the influences of the rigidity of soil on the effect of the base isolation and the seismic responses of the structure are investigated, from which some useful conclusions are presented.
出处
《地震工程与工程振动》
CSCD
北大核心
2003年第5期180-186,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金资助项目
项目编号(50178047)
关键词
基础隔震
格林函数
子结构法
动力刚度矩阵
间接边界元法
base isolation
soil-structure dynamic interaction
Green's functions
substructure approach
dynamic impedance matrix
