瑞利波作用下半空间饱和土中位移应力分布特性研究  

Distribution Characteristics of Displacement and Stress in Half-Space of Saturated Soil under Rayleigh Waves

作　　者：刘林超[1] 闫启方[1] 刘磊[1] 

机构地区：[1]信阳师范学院土木工程学院,河南信阳464000

出　　处：《昆明理工大学学报（理工版）》2010年第2期42-46,90,共6页Journal of Kunming University of Science and Technology(Natural Science Edition)

基　　金：上海市重点学科建设项目(项目编号:Y0103)资助;上海市自然科学基金项目(项目编号:06ZR14037)

摘　　要：研究了瑞利波作用下半空间饱和土位移和应力的分布特征,对于建筑结构抗震设计具有重要的意义.基于饱和多孔介质理论,将土体视为液固饱和两相介质,利用Helmholtz分解,建立求解了瑞利波作用下饱和土的弥散方程,得到了半空间饱和土的位移和应力.分析了渗透系数和阻尼系数对瑞利波作用下半空间饱和土中位移和应力分布特征的影响.It is of great significance to study the distribution characteristics of displacement and stress in half space of saturated soil under Rayleigh waves for seismic design of buildings. Based on porous medium theory, the soil is taken in this paper as fluid two-phase medium. Helmholtz decomposition is then adopted to establish the dispersion equation of soil and to get the displacement and stress. The influences of permeability coefficient and damping coefficient are finally analyzed.

关 键 词：多孔介质 饱和土 瑞利波 粘滞阻尼系数 Helmholtz分解 

分 类 号：TU573.12[建筑科学—建筑技术科学]