摘要
本文采用辅助函数的思想,利用复变函数和多级坐标的方法给出了SH波入射条件下多个半圆形沉积谷地附近浅埋圆形孔洞动力分析问题的解答。将整个求解区域分割成两部分来处理,区域I为多个半圆形沉积谷地,区域II为浅埋圆形孔洞附近带半圆形凹陷的半无限弹性空间。在区域I和II中分别构造位移解,并在二个区域的“公共边界”上实施位移应力的连续条件,建立求解该问题的无穷代数方程组。最后,本文给出了算例和数值结果,并对其进行了讨论。
Dynamic response of a shallow-embedded cylindrical lining cavity below semi-cylindrical alluvial valleys to incident SH waves is studied by using complex function. The model is divided into two parts, and two solutions are constructed in the domains, respectively. One is a standing wave, while another is the scattering by multiple semi-cylindrical alluvial valleys and a subsurface circular cavity. Each of the two functions satisfies the zero-stress condition at the horizontal boundary. By employing displacement and stress continuity condition on the interface, the problem to be solved can be reduced to solving a set of infinite linear algebraic equations. Finally, the computational results of dynamic stress concentration factors and some discussions are provided.
出处
《地震工程与工程振动》
CSCD
北大核心
2006年第4期18-23,共6页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(59578003)
国家教委博士点基金项目(9321703)
关键词
SH波散射
辅助函数
多级坐标
复变函数
半圆形沉积层
浅埋圆形孔洞
scattering of SH-wave
assistant functions
multi-coordinate
complex function
semi-cylindrical alluvial valley
subsurface circular cavity
