ABSTRACT

This paper employs an indirect boundary element formulation for 3D soil-structure interaction analysis in layered transversely isotropic (TI) elastic half-space under incident qP, qSV, and SH waves. Transformation matrix and dynamic Green’s function are employed to compute dynamic impedance coefficients, and foundation displacement is computed by superposition of two cases (with and without mass of foundation and upper structure). Upper structure displacement is solved from dynamic equilibrium equation. An embedded foundation with a single-point structure is simulated to study the influence of the ratio of transverse and vertical Young’s modulus of TI medium and incident angle on soil-structure system response.

摘要

本文采用间接边界元公式对入射 qP、qSV 和 SH 波下的层状横向各向同性 (TI) 弹性半空间中的 3D 土-结构相互作用进行分析。变换矩阵和动态格林函数用于计算动态阻抗系数，基础位移通过两种情况（有和没有基础和上部结构质量）的叠加计算。上部结构位移由动力平衡方程求解。模拟具有单点结构的嵌入式地基，研究TI介质的横向和竖向杨氏模量比以及入射角对土-结构系统响应的影响。