Calculation and analysis of dynamic response of fluid-saturated porous media

被引：0

作者：

Li Liang ^{[1
]}

Du Xiu-li ^{[1
]}

Zhao Cheng-gang ^{[2
]}

Li Li-yun ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100022, Peoples R China

[2] Beijing Jiaotong Univ, Sch Civil Engn & Architecture, Beijing 100044, Peoples R China

来源：

ROCK AND SOIL MECHANICS | 2008年 / 29卷 / 01期

关键词：

fluid-saturated porous media; elasticity; dynamic response; time-domain explicit finite element method; seepage effect;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The elastic wave equations of fluid-saturated porous media are solved by the time-domain explicit finite element method that consists of explicit step-by-step integral format and local transmitting artificial boundary. Then, the elastic dynamic response of fluid-saturated porous media under input earthquake wave is calculated and analyzed with the method mentioned above. At last, the calculating results of elastic dynamic response of fluid-saturated porous media are compared when the seepage of fluid in the cavity is taken account of or not in order to find out the effect of seepage of fluid in the cavity on the dynamic response property of porous media. Calculatiing results show that the figures of elastic dynamic response time history of porous media are same as the figures of input earthquake wave; and the time when the peak value of elastic dynamic response appears corresponds to the time when the peak value of input earthquake wave appears. The seepage of fluid in the cavity has a remarkable effect on the elastic dynamic response property of porous media. In the meanwhile, numerical calculations indicate that the time-domain explicit finite element method is effective for the calculation and analysis of the elastic dynamic response of fluid-saturated porous media.

引用

页码：113 / 118

页数：6