【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。更多还原

【Abstract】 In this paper, the study of the influence of soilstructure 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 baseisolated structures are established considering the soilstructure dynamic interaction. The seismic responses of a sheartype baseisolated 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.更多还原