岩土工程学报2011，Vol.33Issue(5)：679-684,6.
SH波作用下饱和地基表面刚性圆形基础扭转振动分析
Torsional vibration of a rigid circular foundation resting on poroelastic half-space subjected to obliquely incident SH waves
摘要
Abstract
A semi-analytical approach is used to study the torsional vibration of a rigid circular foundaLion resting on poroelastic half-space subjected to obliquely incident SH waves.The Biot's dynamic poroelastic theory is employed to characterize the saturated half-space.The goveming equations for the saturated half-space and foundation are solved by using the Hankel transform.The total wave field in the saturated half-space is classified into free-field waves.rigid-body scattering waves and radiation scattering waves.According to the classification of the total wave field and the mixed boundary-value condition between the saturated half-space and foundation, the torsional vibration of the foundation is formulated into two sets of dual integral equations.Then, the integral equations are reduced to Fredholm integral equations of the second kind to solve.Considering the dynamic equilibrium equation of the foundation, the torsional vibration expression of the foundation is obtained.Numerical results are presented to demonstrate the effects of wave frequency, incident angle of the waves, the torsional inertia moment of the foundation and permeability of the saturated half-space on the torsional vibration.关键词
Biot波动方程/饱和半空间/SH波/扭转振动Key words
Biot' s theory/ poroelastic half-space/ incident SH wave/ torsional vibration分类
建筑与水利引用本文复制引用
蔡袁强,王鹏,曹志刚..SH波作用下饱和地基表面刚性圆形基础扭转振动分析[J].岩土工程学报,2011,33(5):679-684,6.基金项目
国家杰出青年科学基金(51025827) （51025827）
国家自然科学基金(50778136) （50778136）
浙江省杰出青年团队项目(R1080819 （）
中国博士后科学基金(20090450182) （20090450182）
