层土动力Green函数数值计算中若干问题的探讨  

Study of some numerical calculation problems of dynamic Green's functions for layered media

作　　者：陈清军[1] 赵云峰[1] 楼梦麟[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《地震工程与工程振动》1999年第4期27-32,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金资助项目!49804002;国家自然科学基金资助重点项目!598923002

摘　　要：动力Ｇｒｅｅｎ函数数值计算技术是动力边界元法得以实施的关键技术之一。本文首先对两类层状介质动力Ｇｒｅｅｎ函数的频域解进行了比较。在此基础上，文中着重探讨了在土一结构相互作用问题中应用显式动力Ｇｒｅｅｎ函数时的著于数值计算问题，包括土层的子层离散和波数的计算以及半空间的模拟等。最后给出了这一动力Ｇｒｅｅｎ函数在处理层状半无限空间问题时的合理方法。The numerical calculation for dynamic Green's functions is a major step in theboundary element research area. In this paper, the numerical calculation problems of two dynamic Green's functions developed by Apsel and Kausel are reviewed. Some questions concerning the sublayer and wavenumber evaluation and the half-space simulation for the soilstructure interaction problem by using Kausel's Green functions are also discussed. Finally, a rational calculation approach for simulating the layered half-space is suggested for the use ofsoil - structure interaction analysis.

关 键 词：动力GREEN函数 数值计算 频域解 层土动力 地基 

分 类 号：P315.9[天文地球—地震学] TU435[天文地球—固体地球物理学]