中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2011, Vol. 30 ›› Issue (S2): 1237-1240.DOI: 10.3969/j.issn.1674-0696.2011.supp2.026

• • 上一篇    下一篇

棚洞与隧道洞口段的地震反应分析

高峰,王飞,伍臣宇   

  1. 重庆交通大学土木建筑学院,中国重庆400074
  • 收稿日期:2011-10-11 出版日期:2011-12-30 发布日期:2015-01-22
  • 作者简介:高峰(1964—),男,浙江云和人,教授,博士生导师,主要从事隧道及地下工程方面的教学与研究工作。E-mail:gaofeng1964@163.com。
  • 基金资助:
    教育部高等学校博士学科点专项基金(20095522110002);重庆市自然科学基金项目(CSTC,2008BB6066);重庆市教委科学技术研 究项目(KJ090403);中铁二院科研项目(2009-55)

Anti-Seismic Analysis on Connect the Form of Shed-Tunnel in Tunnel Outlet

GAO Feng,WANG Fei,WU Chen-yu   

  1. School of Civil Engineering & Architecture,Chongqing Jiaotong University,Chongqing 400074,China
  • Received:2011-10-11 Online:2011-12-30 Published:2015-01-22

摘要: 应用有限元法并采用等效黏- 弹性人工边界,对棚洞和隧道洞口段的施工过程进行了模拟,确定了隧道施工 完成后的静应力场,并进行了三维地震反应分析。计算中分别考虑了不同围岩级别以及棚洞与隧道洞口的不同联 接形式对地震反应的影响。计算结果表明: 棚洞的纵梁距离洞口越远,其内力越小,在棚洞与隧道洞口的联接处附 近,棚洞梁将产生较大的应力; 围岩的力学指标越高,棚洞结构的内力越小; 当棚洞结构横向一侧与围岩刚性联接 时,隧道洞口与棚洞纵向采用刚性联接比采用柔性联接更有利。

关键词: 棚洞, 地震, 有限元, 联接形式

Abstract: Based on FEM method,3-D seismic responses of the connection part of a tunnel and its shed-tunnel were performed by equivalent viscous-spring artificial boundary. The influence to the seismic response from different rock mass and Connection type of shed-tunnel and the tunnel entrance were respectively taken into account. The results show that internal force of shed-tunnel was reduced along with the distance of shed-tunnel and tunnel entrance increasing; and the higher Physical mechanics property index of the rock is,the smaller structure internal force of shed-tunnel is; in some cases,rigid joint is better than hinge joint to be applied in the joint part of shed-tunnel and hidden hole.

Key words: shed-tunnel, earthquake, finite element, connection type

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