土工基础

›› 2014, Vol. 28 ›› Issue (3): 23-26.

• 工程实录 • 上一篇    下一篇

紧邻地铁隧道超深基坑支护方案分析

方程飞1，初振环2   

  1. (1.中国人寿保险股份有限公司，广东深圳 518000, 2.深圳市市政设计研究院有限公司，广东深圳 518029)
  • 收稿日期:2013-09-24 出版日期:2014-06-20 发布日期:2014-06-28
  • 作者简介:方程飞（1974-），男，海南人，本科，工程师，研究方向为基坑、建筑工程设计施工及项目管理。

Analysis of a Deep Excavation near an Active Shielded Metro Tunnel

FANG Chengfei1, CHU Zhenhuan2   

  1. （1.China Life Insurance Company Ltd., Shenzhen 518000；2.Shenzhen Municipal Design & Research Institute Co., Ltd., Shenzhen 518029）
  • Received:2013-09-24 Online:2014-06-20 Published:2014-06-28

摘要： 受地铁安全运营的限制,紧邻地铁隧道基坑变形控制非常严格。以紧邻地铁盾构隧道的某基坑工程为例，分析了基坑支护的重点、难点，提出了两套基坑支护方案，并采用平面应变渗流耦合有限元法分别进行了仿真模拟，通过对比计算确定最终方案付诸实施。通过计算结果与实测数据的对比，验证了计算方法的可靠度。

关键词: 地铁隧道, 深基坑, 有限元法, 应变渗流耦合

Abstract: Strict deformation control was applied to a deep excavation near an active shielded metro tunnel due to the safety concern of the metro operation. This paper presents the analytical results of this large depth deep excavation with a concentration on the important and difficult issues. Two different excavation support systems are proposed. The process of the excavation was simulated by using Finite Element Analysis considering the plane strain coupled with seepage. The final selected supporting system was based on the comparative studies of both systems. The predicted data are comparable with the observed data during the construction.

Key words: Metro Tunnels, Deep Excavations, FiniteElement Method, Plane Strain Coupled Seepage