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隧道建设（中英文） ›› 2014, Vol. 34 ›› Issue (3): 226-236.DOI: 10.3973/j.issn.1672-741X.2014.03.008

• 研究与探索 • 上一篇    下一篇

盾构下穿北京地铁13号线望京西站站房基础变形及数值分析

张文正   

  1. （广州地铁设计研究院有限公司， 广东广州 510010）
  • 收稿日期:2013-10-09 修回日期:2013-12-23 出版日期:2014-03-20 发布日期:2014-03-20
  • 作者简介:张文正（1988—），男，湖北汉川人，2012年毕业于北京交通大学，道路与铁道工程专业，硕士，助理工程师，现从事地铁线路设计工作。

Deformation of and Numerical Analysis on Foundation of WangjingxiStation on Line 13 of Beijing Metro Caused by Shield Tunneling below

ZHANG Wenzheng   

  1. (Guangzhou Metro Design & Research Institute Co., Ltd., Guangdong Guangzhou 510010, Guangdong, China)
  • Received:2013-10-09 Revised:2013-12-23 Online:2014-03-20 Published:2014-03-20

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摘要：

随着盾构下穿既有构筑物的情形越来越多，盾构施工难免会对既有工程的安全使用和安全性造成一定影响。以北京地铁15号线关庄站—望京西站区间盾构隧道下穿13号线望京西站站房基础施工工程为实例，通过ANSYS有限元数值分析软件对土体注浆和未注浆工况下盾构下穿13号线望京西站站房基础的过程进行模拟，得出土体在注浆情况下既有结构的变形明显减小。将ANSYS有限元分析软件计算结果与现场监测结果进行比较，两者相差不大，验证了有限元分析软件的正确性，从而为今后盾构隧道穿越既有车站结构施工提供借鉴和参考。

关键词: 北京地铁, 盾构隧道, 站房基础, 有限元分析, 注浆加固, 结构变形, 监测

Abstract:

As more and more shields bore across underneath existing structures, the shield boring may jeopardize the safety of the existing structures inevitably. The running tunnel from Guanzhuang station to Wangjingxi station on line 15 of Beijing Metro crosses underneath the foundation of Wangjingxi station on line 13 of Beijing Metro. In the paper, the process of shield boring across underneath Wangjingxi station on line 13 of Beijing Metro under the condition of grouting reinforcement and non grouting reinforcement is simulated by means of ANSYS. The simulation shows that the deformation of the existing structure in the case of grouting reinforcement is reduced dramatically. Comparison and contrast is made between the ANSYS simulation results and the measurement results, which shows that there is no obvious difference between the ANSYS simulation results and the measurement results. It is concluded that the ANSYS simulation results are reliable. The paper can provide reference for other shield boring across underneath existing Metro stations in the future.

Key words: Beijing Metro, shield tunneling, foundation of existing Metro station, finite element analysis, grouting reinforcement, structural deformation, monitoring

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