各向异性成层地基中Rayleigh波的弥散特性  

Dispersion Characteristics of Rayleigh Wave in Anisotropic Layered Soils

作　　者：夏唐代[1] 蔡袁强[1] 吴世明[1] 宫全美 

机构地区：[1]浙江大学土木系,杭州310027

出　　处：《振动工程学报》1996年第2期191-197,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金

摘　　要：利用有限单元法及解析法推导了各向异性成层地基中 Rayleigh 面波的弥散特征方程及各模态波位移分布的计算公式,可用于计算上软下硬地基、上硬下软地基及夹层地基 Rayleigh面波的弥散曲线及位移分布。本文主要对各向异性上软下硬地基中 Rayleigh 面波弥散特性及位移分布规律进行了讨论。The dispersion secular equation of Rayleigh wave and the formulation of determining displace- ment distribution for each mode wave in anisotropic layered soils are developed by using finite element method and analytical method in this paper.The method presented can be used to calculate the dispersion curves and displacment vectors of Rayleigh wave in soils whose shear wave velocity increases with depth, pavement structures and intercalary soils.The dispersion characteristics and displacement of Rayleigh wave in transverse isotropic layered soils whose shear wave velocity increases with depth are emphatically discussed in this paper.

关 键 词：土动力学 各向异性 瑞利波 弥散特征方程 

分 类 号：TU43[建筑科学—岩土工程]