Analytical solutions for dynamic pressures of coupling fluid-solid-porous medium due to P wave incidence  

作　　者：王进廷 张楚汉 金峰 

机构地区：[1]Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China Assistant Professor [2]Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China Professor

出　　处：《Earthquake Engineering and Engineering Vibration》2004年第2期263-271,共9页地震工程与工程振动（英文刊）

基　　金：National Natural Science Foundation of China Under Grant No.50309005;National Key Basic Research and Development Program Under Grant No.2002CB412709

摘　　要：Wave reflection and refraction in layered media is a topic closely related to seismology,acoustics,geophysics and earthquake engineering.Analytical solutions for wave reflection and refraction coefficients in multi-layered media subjected to P wave incidence from the elastic half-space are derived in terms of displacement potentials.The system is composed of ideal fluid,porous medium,and underlying elastic solid.By numerical examples,the effects of porous medium and the incident wave angle on the dynamic pressures of ideal fluid are analyzed.The results show that the existence of the porous medium,especially in the partially saturated case,may significantly affect the dynamic pressures of the overlying fluid.Wave reflection and refraction in layered media is a topic closely related to seismology,acoustics,geophysics and earthquake engineering.Analytical solutions for wave reflection and refraction coefficients in multi-layered media subjected to P wave incidence from the elastic half-space are derived in terms of displacement potentials.The system is composed of ideal fluid,porous medium,and underlying elastic solid.By numerical examples,the effects of porous medium and the incident wave angle on the dynamic pressures of ideal fluid are analyzed.The results show that the existence of the porous medium,especially in the partially saturated case,may significantly affect the dynamic pressures of the overlying fluid.

关 键 词：porous medium ideal fluid dynamic pressure elastic half-space layered media P wave REFLECTION REFRACTION 

分 类 号：O347.41[理学—固体力学]