土工基础

›› 2013, Vol. 27 ›› Issue (4): 1-4.

• 工程实录 •    下一篇

考虑施工过程力学效应的逆作法深基坑围护结构设计

张栋栋   

  1. (济南一建集团总公司,济南 250100)
  • 收稿日期:2013-04-03 出版日期:2013-08-20 发布日期:2013-08-27
  • 作者简介:张栋栋(1981-)，女，工程师，研究方向为结构受力及施工技术方向。

Braced Excavation Supporting System for Inverse Construction

ZHANG Dongdong   

  1. (Jinan Yijian Group Corporation,Jinan,250100)
  • Received:2013-04-03 Online:2013-08-20 Published:2013-08-27

摘要： 以南京地铁三号线新庄站~市政府站中间风井围护结构计算设计为例，采用结构分析软件计算了逆作法深基坑在施工阶段和运营阶段的最不利荷载组合下围护结构的内力特征，给出了地下连续墙、环框梁、横纵梁和底板的配筋演算，总结了类似逆作法深基坑的围护结构工程设计经验。

关键词: 基坑工程, 南京地铁, 逆作法, 围护结构, 施工过程

Abstract: This paper provides a case study on the braced excavation for the air shaft between Xinzhuang Station and Municipal Government Station of Nangjing Metro Line 3.  Inverse construction was proposed for the excavation.  Numerical analysis was performed to obtain the stresses within the support system under the most critical load combination during construction and after the air shaft is in service.  The design of the reinforcement in the diaphragm wall, ring box beam, stringers and bottom slab was performed based on the results of the numerical analysis.

Key words: Braced Excavation, Nanjing Metro, Inversed Construction, diaphragm wall, construction process