土工基础

›› 2016, Vol. 30 ›› Issue (5): 533-537.

• 工程实录 •    下一篇

复杂环境基坑半逆作法支护结构的探讨

王 斌1，张领帅2   

  1. （1.中铁建工集团有限公司深圳分公司，广东深圳 518052； 2.深圳市宏业基基础工程有限公司，广东深圳 518057）
  • 收稿日期:2015-10-22 修回日期:2015-11-05 出版日期:2016-10-20 发布日期:2016-10-31
  • 作者简介:王 斌（1978-），男，副总工，高级工程师，研究方向为岩土工程。

Application of the Semi Reverse Construction Method in Complex Supporting Structures

WANG Bin1， ZHANG Lingshuai2   

  1. （1.China Railway Construction Engineering Group Shenzhen Branch, Shenzhen 518052；
    2.Shenzhen Hongyeji Foundation Engineering Co. Ltd., Shenzhen 518057）
  • Received:2015-10-22 Revised:2015-11-05 Online:2016-10-20 Published:2016-10-31

摘要： 介绍了昆明某基坑在已经施工完大部分支护结构的情况下，采用原桩锚设计方案无法继续实施，经分析采用“半逆作法”设计方案。对该方案采用有限元法进行了变形及内力分析，结合现场施工情况及监测结果，表明在确保周边环境安全前提下，采用局部半逆作法可有效地缩短施工总工期，为今后类似工程提供了一定的借鉴作用。

关键词: 复杂环境, 半逆作法, 支撑结构梁, 有限元法, 变形监测

Abstract: The existing supporting structures in Kunming are almost completed, but the planned ground anchors could not be installed. The semiinverse construction was applied to remediate this deep excavation project. Finite element analysis was performed to obtain the stress and strain in the supporting structures. Construction monitoring system was also installed. Based on the observed monitoring data, it is concluded that the semiinverse construction technique can effective reduce the construction duration.

Key words: Complex Environment, Semi Reverse Construction Method, Support Structural Beams, Finite Element Analysis, Deformation Monitoring