【摘要】 文章应用子结构法,利用锥体模型求得基础底部的阻抗函数,并结合对应的地震动有效输入,推导了在地震作用下基础顶部的实际阻抗函数和有效地震动输入,同时建立整个隔震体系方程,在考虑土-结构相互作用下,分析了不同性质地基土和不同基础埋深下的隔震体系。结果表明,在地基土剪切波速较小且埋深较大时,土-结构的相互作用对基础隔震体系的地震响应影响较大,在结构动力分析中应加以考虑。更多还原

【Abstract】 The incidence wave is translated into scattered wave(exactly the effective input motion) when the foundation is embedded.The impedances and the effective input motions at the bottom of embedded foundation are evaluated by means of the cone model.Those parameters are transformed exactly to the corresponding ones at the top of the foundation.Then the equation of the whole base-isolated system is derived,and by taking into consideration soil-structure interaction(SSI),the effect of shear wave velocity and the embedded base-isolated system are analyzed.The results show that the effect of SSI may have great impact on the response of base-isolated structure when the shear wave velocity is small and the embedment of foundation is large,which must be considered in the dynamic analysis of structure.更多还原