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隧道建设(中英文) ›› 2014, Vol. 34 ›› Issue (3): 237-242.DOI: 10.3973/j.issn.1672-741X.2014.03.009

• 研究与探索 • 上一篇    下一篇

活断层错动位移下变形缝间距对隧道内力的影响

李学锋1, 代志萍2, 谷雪影2, 曹自豪2   

  1. (1. 同济大学土木工程学院地下建筑与工程系, 上海 200092; 2. 上海同岩土木科技有限公司, 上海 200092)
  • 收稿日期:2013-12-02 修回日期:2014-01-15 出版日期:2014-03-20 发布日期:2014-03-20
  • 作者简介:李学锋(1989—),男,江苏连云港人,2012年毕业于中国矿业大学,地质工程专业,本科,在读研究生,从事隧道及地下工程相关实验研究和数值模拟工作。

Influence of Deformation Joint Spacing on Internal Force  of Tunnel under Active Fault Movement

LI Xuefeng1, DAI Zhiping2, GU Xueying2, CAO Zihao2   

  1. (1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;  2. Shanghai Tongyan Civil Engineering Technology Co.[KG-*3], Ltd.[KG-*3], Shanghai 200092, China)
  • Received:2013-12-02 Revised:2014-01-15 Online:2014-03-20 Published:2014-03-20

摘要:

以活动断裂带为工程背景,探究变形缝间距对跨断层隧道内力的影响。运用ABAQUS有限元分析软件,建立穿越活动断裂带的隧道模型,分析断层错动下不同节段长度隧道围岩压力分布情况、二次衬砌最大轴向应力变化情况以及隧道塑性应变发展规律。结果表明:隧道节段长度越短,二次衬砌最大轴向应力越小,最大塑性应变越大;断层错动的影响主要集中在断层带内左侧区域的隧道,拱腰和拱脚部位受力和塑性变形明显。

关键词: 活断层, 隧道, 变形缝间距, 内力, 塑性应变

Abstract:

In this paper, we focus on the influence of different deformation joint spacings on tunnels under the condition of fault movement. We establish a model of faultcrossing tunnel by means of finite element software ABAQUS. We analyze the surrounding rock pressure, the maximum axial stress and the development of plastic strain of the tunnel with different deformation joint spacings. The results show that the more the deformation joints, the smaller the maximum axial stress is and the larger the maximum plastic strain is; The influence of the fault movement mainly focuses on the tunnel in the left area of the fault zone, and the stress and plastic strain at the arch waist and spring line of the tunnel are distinctive.

Key words: active fault, tunnel, deformation joint spacing, internal force, plastic strain