弾性表面波による構造物基礎周辺地盤の振動解析

Abstract

The paper deals with the seismic response analysis of near surface ground and structuralfoundation which are subjected to surface waves such as Love and Rayleigh waves. Thefinite element method is applied to the problem, in which the semi-infinite element is firstintroduced to take into account the exact mode shape in the deep base layer.The frequency response function of the foundation structure and that of near surfaceground are computed for the incidence of the fundamental mode of Love and Rayleighwave. The result of numerical computation shows that the foundation structures submergedin the surface ground has a shielding effect of surface waves of higher frequency componentfor the response of near surface ground behind the structure.