P波入射引起的水下输水隧洞地震响应研究  

Study on seismic response of underwater convey tunnel induced by plane P waves

作　　者：马宏伟[1] 陈文化[2] 宗琦[1] 丁曼曼[1] MA Hongwei CHEN Wenhua ZONG Qi DING Manman(School of Civil Engineering ＆ Architecture, Anhui University of Science ＆ Technology, Huainan 232001, China School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]北京交通大学土木建筑工程学院,北京100044

出　　处：《世界地震工程》2016年第4期194-202,共9页World Earthquake Engineering

基　　金：国家自然科学基金资助(51408006;51178035;51274009);安徽省高等学校自然科学研究项目资助(KJ2014A068);安徽理工大学人才引进基金

摘　　要：研究输水隧洞的地震响应问题对引水工程的抗震设计和施工是必要的。采用波动解法,得到了P波入射时水下输水隧洞平面地震响应的解析解。通过对场地模型的分析,给出了水下场地-隧洞衬砌-隧洞内水体体系的地震响应。并着重讨论了P波入射时隧洞埋深和地表水深对衬砌结构动力响应的影响。研究表明,P波入射引起的水下输水隧洞地震响应随着地表水深的增大而增大;低频P波入射时,随着隧洞埋深的增大,隧洞衬砌的动应力逐渐增大,动位移则逐渐减小,而高频P波入射时,隧洞衬砌的动力响应随着隧洞埋深的增大而呈波动式变化。It is necessary to study seismic response of convey tunnel for seismic design and construction of water diversion project. In this paper, it is obtained that the analytical solutions of underwater convey tunnel＇ s seismic response caused by plane P waves by using the wave solution. The dynamic response of the system that consisted of underwater ground, tunnel lining and water in tunnel was given on the basis of the analytical solution. The influence of the tunnel buried depth and the surface water depth on the seismic response of tunnel lining was emphatically discussed. The analytical results indicate that the seismic response of underwater convey tunnel increases with surface Water depth, while the response caused by tunnel burieds depth depends on the frequency of incident P waves.

关 键 词：隧道工程 动力响应 波函数展开法 输水隧洞 

分 类 号：P315[天文地球—地震学]