ABSTRACT

This paper presents an analytical solution to calculate the seismic earth pressure induced by Rayleigh wave in viscoelastic media using the three-dimensional wave propagation theory. Two soil-structure systems are considered: a substructure inserted into a homogeneous soil layer and a substructure surrounded by a multilayered soil profile. Closed-form solutions are proposed as functions of damping ratio, Poisson’s ratio, and the height of the substructure. Furthermore, two special cases were investigated to examine the influences of a loose and a stiff thin layer in the layered soil profiles. The results obtained for different scenarios were compared systematically in a comprehensive numerical example.

摘要

本文提出了一种利用三维波传播理论计算粘弹性介质中瑞利波引起的地震土压力的解析解。考虑了两种土壤结构系统：插入均质土壤层的下部结构和被多层土壤剖面包围的下部结构。封闭形式的解决方案被提出作为阻尼比、泊松比和子结构高度的函数。此外，研究了两个特殊情况，以检查层状土壤剖面中松散和坚硬薄层的影响。在综合数值示例中系统地比较了不同情景下获得的结果。