岩土工程学报2009，Vol.31Issue(6)：959-964,6.
广义Gibson地基上刚性圆板的扭转特性
Torsional dynamic characteristics of rigid disc on generalized Gibson stratum
摘要
Abstract
Dynamic characteristics of a rigid disc,which rests on a saturated stratum with shear modulus increasing linearly with the depth,subjected to harmonic torque,are investigated.On the basis of Biot'S theory of the saturated soil,dynamic differential equations of generalized Gibson soil are established.Considering the traits of torsional vibration,the differential equations are solved by using the technique of Hankel transform,and the shear stresses and radial displacement in Hankel transform domain are formulated.Considering the boundary conditions at the upper and lower surfaces of the stratum,a set of dual integral equations are established.By mathematical method,the dual integral equations are solved,and the dynamic compliance coefficient and angular amplitude of the foundation are expressed explicitly.Numerical examples are presented to investigate the influence of the shear modulus gradient and permeability coefficient on the results.关键词
广义Gibson地基/饱和地基/刚性圆板/积分方程/扭转特性Key words
generalized Gibson soil/saturated soil/rigid disc/integral equations/torsional dynamic characteristic分类
建筑与水利引用本文复制引用
杨云芳,吴大志..广义Gibson地基上刚性圆板的扭转特性[J].岩土工程学报,2009,31(6):959-964,6.基金项目
Social Development Project of the Science and Technology Department of Zhejiang Province(2008C33051) （2008C33051）
