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弹性半空间中含粘性滑移界面圆形衬砌洞室对平面SH波的散射

《应用力学学报》[ISSN:1000-4939/CN:61-1112/O3]

期数:
2019年02期
页码:
379-385
栏目:
出版日期:
2018-12-18

文章信息/Info

Title:
Scattering of plane SH waves by a circular lining cavity with viscous-slip interface in elastic half space
作者:
刘中宪12张征1梁建文3
1 天津城建大学 天津市土木建筑结构防护与加固重点实验室 300384 天津; 2 天津市地震工程研究所 300384 天津;3 天津大学 土木系 300372 天津
Author(s):
Liu Zhongxian12 Zhang Zheng1 Liang Jianwen3
1Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, 300384, Tianjin, China; 2 Tianjin Institution of Earthquake Engineering, 300384, Tianjin, China; 3 Departrment of Civil Engineering, Tianjin University, 300372, Tianjin, China
关键词:
弹性半空间衬砌洞室粘性滑移界面动应力集中间接边界积分方程法散射
分类号:
P315.9
DOI:
10.11776/cjam.36.02.C004
文献标识码:
A
摘要:
为揭示粘性滑移界面对衬砌洞室地震响应规律的影响,采用一种高精度的间接边界积分方程法,基于粘性滑移界面模型,求解了弹性半空间中浅埋圆形衬砌洞室对入射平面SH波的散射。结果表明:中低频波入射时,随着界面滑移刚度系数的增加,衬砌洞室上方地表位移幅值减小,而界面粘性系数对地表位移反应不明显;衬砌内壁应力幅值随界面滑移刚度系数的增加而增大。高频波入射下,较小的界面粘性系数对地表位移放大效应更为显著;当界面滑移刚度系数较小时,部分频段由于体系共振效应会造成显著的应力集中;高频特别是共振频率段,粘性系数对应力幅值有明显的降幅效应。研究结论可为实际地下工程结构的抗震设计提供部分理论依据。

参考文献/References

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