土工基础

›› 2017, Vol. 31 ›› Issue (4): 435-439.

• 工程实录 • 上一篇    下一篇

临近地铁隧道深基坑设计及三维计算分析

乔丽平1，2，3   

  1. （1.深圳市龙岗地质勘查局,深圳 518172；2.深圳市岩土综合勘察设计有限公司， 深圳 518172；
    3.深圳市粤地建设工程有限公司，深圳 518172）
  • 收稿日期:2016-07-15 修回日期:2016-08-01 出版日期:2017-08-20 发布日期:2017-08-22
  • 作者简介:乔丽平（1979- ），男，硕士、高级工程师，国家注册土木工程师（岩土），研究方向为地基处理、基坑、边坡工程的设计、研究及咨询。

Design and 3D Analysis of the Supporting System of a Deep Excavation near the Subway Tunnel

QIAO Liping1,2,3   

  1. (1.Shenzhen Longgang Geological Exploration Bureau, Shenzhen 518172;
    2.Shenzhen Geotechnical Engineering Investigation & Design Co. Ltd., Shenzhen 518172;
    3.Yuedi Construction Engineering Co. Ltd., Shenzhen 518172)
  • Received:2016-07-15 Revised:2016-08-01 Online:2017-08-20 Published:2017-08-22

摘要： 地铁安全保护区（以下简称“地铁安保区”）是指“地下车站与隧道周边外侧50 m内；地面和高架车站以及线路轨道外边线外侧30 m内；出入口、通风亭、变电站等建筑物外边线外侧10 m内”的区域，此区域内基坑开挖对地铁隧道的影响要求非常严格，以荣超后海大厦基坑工程为背景，介绍了地铁安保区内进行深基坑设计、施工的难点及应对措施。采用三维有限元计算分析了基坑开挖的全过程及对地铁隧道的变形影响，并与实测数据进行了对比分析，可供类似工程参考。

关键词: 地铁隧道, 深基坑设计, 三维计算分析, 基坑开挖, 变形控制

Abstract: Very restrictive requirements are imposed on the excavations that are very close to the active operational subway. This paper presents a case history of the deep excavation of Rongchan Houhai Building, which is very close to a subway. The challenges in the design and construction as well as the approaches used to overcomes these difficulties. Three dimensional finite element analyses were used to simulate the entire excavation. The deformation results in the numerical analysis were compared to the field observed data.

Key words: Subway Tunnel, Deep Excavation Supporting Design, Three Dimensional Analysis, Deep Excavation, Deformation Control