层状饱和场地中线性分布斜线荷载的动力Green函数  

Green's functions for linearly distributed loads acting on inclined line in poroelastic layered site

作　　者：尤红兵[1] 梁建文[1] 

机构地区：[1]天津大学土木工程系,天津300072

出　　处：《振动工程学报》2005年第3期335-341,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(50378063);教育部优秀青年教师资助计划

摘　　要：基于一种实用的Bo it模型,利用层状饱和土层的精确动力刚度矩阵,给出了层状饱和场地中线性分布荷载作用于与水平向有夹角的倾斜直线时的动力G reen函数,解决了利用间接边界元法分析局部地形对地震波散射及土-结构动力相互作用等研究中的关键问题。本文解答可以退化为W o lf弹性情况结果,最后进行了算例分析。Based on one kind of practical Biot＇s equation and the exact dynamic-stiffness matrices of poroelastic soil layer and half-space, Green＇s functions were derived for linearly distributed loads acting on inclined line in a poroelastic layered site. The key problems within the indirect boundary element method, which was employed to analyze the influence of the local soil conditions on wave scattering and dynamic soil-structure interaction, is solved. The Green＇s functions given in this research can be degenerated to the case of elastic layered site developed by Wolf. Finally Parametric studies are carried out in the paper.

关 键 词：饱和土 GREEN函数 层状土层 BIOT方程 线性分布荷载 

分 类 号：TU435[建筑科学—岩土工程]