›› 2017, Vol. 31 ›› Issue (2): 183-187.

• 工程实录 • 上一篇    下一篇

大型基坑开挖对地铁车站基坑影响的数值仿真分析

席 鹏,曹得占   

  1. (中冶集团武汉勘察研究院有限公司,武汉 430080)
  • 收稿日期:2017-01-20 修回日期:2017-02-13 出版日期:2017-04-20 发布日期:2017-05-04
  • 作者简介:席 鹏(1979-),男,工程师,研究方向为岩土工程的设计、施工与科研。

Numerical Analysis on the Effect of Large Deep Excavation on the Metro Station Excavation

XI Peng, CAO Dezhan   

  1. (Wuhan SurveyingGeotechnical Research Institute Co. Ltd., MCCC, Wuhan, 430080)
  • Received:2017-01-20 Revised:2017-02-13 Online:2017-04-20 Published:2017-05-04

摘要: 运用有限差分软件FLAC3D开展了某大型基坑开挖对地铁车站基坑影响的数值仿真分析,探讨了在现有设计支护条件下,大型基坑开挖后基坑周边土层的变形和应力变化,以及基坑支护结构的受力和变形规律。结果表明,大型基坑施工对地铁基坑施工有一定的影响,在两基坑共建区域变形与内力均较大,但是这种影响仍然在可控的范围内。该成果可为类似工程的支护设计提供借鉴,并为分析相邻基坑相互影响提供参考。

关键词: 基坑开挖, FLAC3D, 数值仿真, 基坑变形

Abstract: This paper presents the numerical analysis results on the effect of a large deep excavation on the Metro station excavation using a commercial finite element software FLAC3D. The subsidence as well as the stress in the ground adjacent to the excavation, the deformation and the stress distribution in the supporting structure are investigated. The results indicate that the deep excavation can affect the performance of the Metro station foundation excavation. At locations close to both excavations, large ground subsidence and the stress in the supporting structures are expected but these values are within the acceptable zone.

Key words: Deep Excavation, FLAC3D, Numerical Analysis, Excavation Deformation