层状场地中洞室对斜入射SH波三维散射：结果与分析

he surface displacements around a cylindrical cavity in layered elastic half-space under obliquely incident plane SH waves is presented by using the simplest model of single layer on half-space. It is shown that, there are distinct differences between layered half-space and homogeneous half-space, and layered half-space makes the surface displacement amplitudes around a cylindrical cavity much more complicated due to its resonant characteristics of the layered half-space, and both the stiffness ratio of the bedrock to the soil layer and the thickness of the soil layer have important effect on the diffraction.