土工基础

›› 2013, Vol. 27 ›› Issue (1): 56-58.

• 工程实录 • 上一篇    下一篇

可拆卸锚杆在基坑工程中应用的安全性分析

孙军振 1，张佃仁 2，雷金山 2   

  1. （1.中铁六局集团桥隧分公司，北京 1000361;2.中南大学土木工程学院，长沙 410075）
  • 收稿日期:2012-11-27 出版日期:2013-02-28 发布日期:2013-03-05
  • 作者简介:孙军振(1980-),男,江苏连云港人，工程师,研究方向为隧道与地下工程施工技术与管理。
  • 基金资助:

    湖南省科技厅工业支撑计划项目（2011GK3127）；湖南省发改委批准立项项目（湘发改高技［2012］1493号）

The Safety Analysis of the Deep Excavation SupportUsing Retrievable Ground Anchors

SUN Junzhen, ZHANG Dianren， LEI Jinshan   

  1. (1.Bridge & Tunnel Engineering Co., China Railway Sixth Group Co., Ltd., Beijing, 100361;2.College of Civil Engineering, Central South University, Changsha, 410075)
  • Received:2012-11-27 Online:2013-02-28 Published:2013-03-05

摘要： 基坑工程中可回收锚杆拆卸时，支护形式的有效转换非常重要。以某基坑工程为背景，采用有限元软件Midas/Gts模拟基坑开挖后拆卸锚杆和地下结构施工过程，考察基坑及支护结构的变形情况，并与现场监测数据进行对比分析，对可回收锚杆支护的设计优化及现场施工具有一定的参考意义。

关键词: 基坑, 有限元分析, 可回收锚杆, 稳定

Abstract: The transition of the supporting system from anchored walls is an very important topic when the retrievable ground anchors are using in the supporting of deep excavations. This paper presents a case history of a deep excavation in sandy gravel soils. The deep excavation construction sequence and the ground anchor retrieval as well as the substructure construction are simulated with Finite Element Software MIDAS-GTS. The deformation of the walls is monitored and the results indicate a good consistent between the simulated and observed data.

Key words: Deep Excavations, Finite Element Analysis, Retrievable Ground Anchors, Excavation Stability