计算力学学报Issue(3)：333-339,7.DOI:10.7511/jslx201403009
地震波倾斜入射下两相饱和土层响应数值模拟
Numerical simulation of saturated layered soil subjected to inclined seismic wave incidence
摘要
Abstract
Based on Biot’s two phase poroelastic theory ,the stiffness matices of saturated soil is developed in frequency domain and then the dynamic responses for a multi-layered poroelastic soil subjected to earthquake seismic wave at inclined incidence from the bedrock is studied with numerical method ,modi-fied Kanai-Tajimi spectrum for incident earthquake wave is adopted .The amplification of soil surface with different conditions are compared ,results show that for the seismic wave at inclined incidence from bedrock ,the response of soil reaches the maximun w hen the angle of incidence reachs critical incident an-gle ;the response of soil surface decreasing with the bedrock depth and damper ratio ;w hile there’s a criti-cal value for velocity of soil-bedrock ratio that soil response get it's maximum .For soils with non-homo-genous middle layer ,the response along soil depth was explicite given in this paper and conpared with homogenous soil ,the response can be weaken by it ,especially soft middle layer can impede the propaga-tion of seismic wave from bottom notably .关键词
Bio t方程/饱和层状土层/地震波倾斜入射/波动响应Key words
Biot’s equation/layered saturated soil/seismic wave at inclined incidence/response of seismic wave分类
建筑与水利引用本文复制引用
张卫平,孙昭晨,梁书秀..地震波倾斜入射下两相饱和土层响应数值模拟[J].计算力学学报,2014,(3):333-339,7.基金项目
国家863项目（2007AA11Z130）；国家创新研究群体科学基金（50921001）资助项目． （）
