摘要
采用复变函数、Green函数方法研究了SH波作用下,地下圆形衬砌与多个裂纹复合缺陷的地震动问题。求解关键是构造适合所需的Green函数,即含圆形衬砌的弹性半空间内任意一点承受时间谐和的出平面线源荷载的位移函数的基本解。再结合裂纹“切割”方法在任意位置上构造多个任意长度的裂纹,求得圆形衬砌和多个裂纹同时存在情况下的位移场与应力场。最后通过算例,进一步探讨不同参数对水平地表地震动的影响规律。
Ground motion of underground circular lining structure and multiple cracks under SH-waves was reported using the methods of complex variables function and Green , s function. The key point is to construct a Green , sfunction,namely an essential solution of the displacement field for the elastic half-space containing circular liningstructure while bearing out-plane harmonic line source loads in half space at arbitrary point. The method of “crack- division” is developed to establish the cracks, then the expressions of displacement and stress can be obtainedwhile the circular lining structure and cracks are both in existent. Finally, numerical examples are provided to discuss the influence of different parameters upon the horizontal surface displacement.
作者
许华南
张洋
黄清云
许美娟
XU Huanan;ZHANG Yang;HUANG Qingyun;XU Meijuan(School of Resource Engineering,Longyan University,Longyan 364012,China;Heilongjiang Institute of Architectural Design,Harbin 150008,China;AVICSACCommercial Aircraft Company Limited,Shenyang 110169,China)
出处
《地震工程与工程振动》
CSCD
北大核心
2019年第6期154-159,共6页
Earthquake Engineering and Engineering Dynamics
基金
福建省自然科学基金面上项目(2019J01793)
福建省教育厅中青年项目(JT180536)~~
关键词
SH波
GREEN函数
圆形衬砌
裂纹
地震动
SH-waves
Green, s function
circular lining structure
crack
ground motion
