摘要
介绍地震作用对隧道工程的影响机理及计算难点,总结出隧道抗震的设计思路。并依托广东省汕头市某小净距隧道,在总结分析隧道围岩节理发育特征、隧道施工区内的水文地质条件以及场地地震效应的基础上,采用静力法对隧道V级围岩浅埋段进行抗震计算分析。计算过程中,拟定不同二衬厚度,通过有限元软件求得各荷载组合下结构轴力和弯矩分布情况,结合规范验算结构的裂缝宽度与二次衬砌各部位的安全系数,并选取合适的二衬结构,该计算方法与成果可供类似工程安全分析参考。
This paper introduces the influence mechanism and calculation difficulties of earthquake action on tunnel engineering,and summarizes the design ideas of tunnel anti-seismic.Take a small clear distance tunnel in Shantou City,Guangdong Province as an example,on the basis of summarizing and analyzing the joint development characteristics of surrounding rock,the hydrogeological conditions in the tunnel construction area and the site seismic effect,the static method is used to calculate and analyze the seismic resistance of the shallow buried section of grade V surrounding rock in the tunnel.In the process of calculation,the distribution of axial force and bending moment of the structure under different load combinations is obtained through finite element software.And then,combined with the specification checking structure crack width under the working conditions and each part of the secondary lining safety factor,and selecting appropriate second lining structure,the calculation method and results can be used for reference in the similar engineering safety analysis.
作者
李伟豪
罗立娜
LI Wei-hao;LUO Li-na(Guangzhou Huahui Transportation Technology Co.,Ltd.,Guangzhou,Guangdong 510335,China;Guangzhou Railway Vocational and Technical College,Guangzhou,Guangdong 510430,China)
出处
《黑龙江交通科技》
2022年第2期109-112,共4页
Communications Science and Technology Heilongjiang
基金
广州铁路职业技术学院新引进人才科研启动项目(GTXYR1704)。
关键词
隧道
高烈度地震区
抗震设计
破碎围岩
tunnel
high intensity seismic area
anti-seismic design
broken surrounding rock
