摘要
采用大圆弧面来模拟半空间表面,利用波函数展开法在频域内给出了圆弧形沉积谷地形对平面P波三维散射的一个解析解,并以此解答为基础,进一步分析了入射波频率和入射角度对圆弧形沉积谷地场地反应的影响。数值结果表明,入射波的频率和入射角度对圆弧形沉积谷地场地反应有重要影响。
The 3-D scattering of plane P waves by circular arc alluvial valleys is studied. The circular surface assumption is used to simulate half-space surface; and the wave function expansion method is used to give the analytical solution in frequency domain. Based on the solution, the effects of the incident frequency and incident angle of plane P waves on the dynamic response of circular arc alluvial valley are discussed. The numerical results show that the surface displacement amplitudes significantly depend on the incident angle and the incident frequency of the incident P waves.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2010年第2期461-470,共10页
Rock and Soil Mechanics
基金
教育部新世纪优秀人才支持计划(NCET-05-0248)的资助
关键词
三维散射
平面P波
圆弧形沉积谷地
解析解
three-dimensional scattering
plane P waves
circular arc alluvial valley
analytical solution
作者简介
梁建文，1965年生，搏士，教授，博士生导师，主要从事工程波动研究。E-mail：liang@tju．edu．cn
