摘要
研究了弹性半空间中半圆形凸起与凹陷相连地形对SH波的散射问题。将整个求解区域分割为2部分,在其中分别构造满足边界条件的位移解,通过移动坐标使之满足“公共边界”以及半圆形凹陷表面上的边界条件,从而建立起求解该问题的无穷代数方程组。最后,给出了地表位移幅值的数值结果以及凸起地形顶点和凹陷地形最低点处位移幅值的反应谱并进行了讨论。
Scattering of SH-wave by a semi-cylindrical hill and a semi-cylindrical canyon in half-space was studied. The domain of solution was divided into two parts, and then the displacement solutions that meet the boundary conditions were constructed in them respectively. By moving coordinates, the solutions were conjoined to satisfy the boundary condition of junction interface and semi-cylindrical canyon; thereby a set of infinite algebraic equations about the problem can be obtained. Finally, the computational results of surface displacement and the response spectrum of the amplitudes of the hill peak and the canyon＇ s lowest point were provided and discussed.
出处
《地震工程与工程振动》
CSCD
北大核心
2006年第5期14-20,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(50478017)
关键词
SH波散射
半圆形凸起
半圆形凹陷
移动坐标
scattering of sh-wave
semi-cylindrical hill
semi-cylindrical canyon
moving coordinates
