前言对于原子能发电站和其它比较刚的结构来说,土壤-结构相互作用效应能影响结构的动态反应,特别是最低的和最主要的振型。这种效应并非总是保守的,如果不了解土壤的性质就难以估算。实验结果已经证明,对高的建筑物而言,基本振型的频率和阻尼与振幅为非线 Foreword For atomic power plants and other more rigid structures, soil-structure interaction effects can influence the dynamic response of the structure, especially the lowest and most dominant modes. This effect is not always conservative and it is difficult to estimate without understanding the nature of the soil. Experimental results have shown that, for tall buildings, the frequency, damping, and amplitude of the fundamental mode shape are nonlinear