【摘要】 基于某沿江城市新建越江盾构隧道横断面结构的抗震设计,采用了拟静力法之一的地震系数法计算,再利用动力有限元的惯性力法进行检验,得到了隧道顶部位移时程曲线、顶底间的相对位移时程曲线、管片衬砌结构的内力图和变形图。得出的结论可以为本工程盾构隧道抗震设计和施工提供理论参考,针对盾构隧道横断面结构抗震设计采取的方法也可为类似工程设计提供参考。更多还原

【Abstract】 The paper studied the seismic design of the cross section of a newly-built shield tunnel over the river of certain city.The seismic coefficient method,one of the pseudo-static methods,was introduced and with the help of internal force method of the dynamic finite element approach,the paper concluded the time-history curve for the tunnel-top displacement,the time-history curve for the relative displacement between the top and the bottom,as well as the internal force diagram and the deformation diagram of the lining structure of the segment.The conclusion arrived can be used as a theoretical reference for the seismic design and engineering of the shield tunnel in this very project.At the same time,the seismic design applied at the cross section is of great value to other similar projects.更多还原