土工基础

›› 2013, Vol. 27 ›› Issue (4): 76-79.

• 工程实录 • 上一篇    下一篇

浅埋地铁车站地震响应分析

吕高峰1,2 ,孙星亮3   

  1. (1.北京市轨道交通建设管理有限公司，北京 100037；2.中国地质大学(北京),北京 100083;3.石家庄铁道大学土木学院，石家庄 050043)
  • 收稿日期:2013-04-29 出版日期:2013-08-20 发布日期:2013-08-27
  • 作者简介:吕高峰(1970-)，男，博士，高工，研究方向为岩土工程、地下工程等领域。

Analysis of Seismic Response of Metro Station Structure with Shallow depth

LV Gaofeng1,2, SUN Xingliang3   

  1. (1.Beijing Railway Construction and Management Co.,Ltd.Beijing,100037;2.China University of Geosciece(Beijing),Beijing 100083;3.School of Civil Engineering,Shijiazhuang Railway University,Shijiazhuang,050043）
  • Received:2013-04-29 Online:2013-08-20 Published:2013-08-27

摘要： 基于大型通用有限元程序ANSYS，对沈阳地铁某埋深较浅的三拱两柱式双层车站进行了完全法瞬态动力分析，通过将阪神水平地震波从基岩输入，得到了车站结构的地震响应特性。从关键节点的内力时程曲线可以看出，地下结构各节点结构内力响应特征及出现内力峰值的时刻是基本一致的；结构在内力峰值时刻的弯矩分布表明，在结构底板两侧节点处的弯矩最大，拱部两端节点处轴力最大，但总的量值都不大。分析结果表明，在设防地震烈度为7度的沈阳地区，以水平方向为主的地震波作用下该洞桩法车站结构是安全的。

关键词: 地震响应, 浅埋, 地铁车站, 有限元, ANSYS

Abstract: Using a general FEM program, complete instantaneous dynamic analysis was performed for a metro station constructed with by pilebeamarch (PBA) method, a structure type which is common in metro station construction. Dynamic response of the metro station structure was obtained through seismic wave input at base of structure. From the time history curves of key nodes of the structure, the response of internal forces coincide with the peak value of internal force. The bending moment diagrams of structure at peak time shows that the maximum bending moments in the bottom slab take place at corners, and the maximum axial forces take place at both ends of the arch, while the magnitudes of the maximum values are relatively low. The results indicated that this metro station structure can remain safe under an earthquake intensity of 7 degree in Shenyang region.

Key words: Seismic Response, Metro Station with Shallow Depth, Finite Element Method, ANSYS