土工基础

›› 2012, Vol. 26 ›› Issue (5): 61-62.

• 工程实录 • 上一篇    下一篇

涵洞顶管施工中后背反力增强设计方案分析

 王士恩   

  1. （广东省水利水电科学研究院，广州 510610）
  • 收稿日期:2012-02-12 出版日期:2012-10-20 发布日期:2012-10-27
  • 作者简介:王士恩（1958-），男，博士，1993年毕业于武汉水利电力大学岩土工程专业，现任高级工程师，研究方向为岩土工程专业的勘察、设计及施工。

Enhancing Reactions for the Pipe Jacking in Hydraulic Engineering Projects

WANG Shien   

  1. (Hydraulic and Electrical Power Research Institute of Guangdong Province，Guangzhou，510610)
  • Received:2012-02-12 Online:2012-10-20 Published:2012-10-27

摘要： 目前在水利工程加固施工过程中，输水涵洞的置换多采用顶管施工方法，但后背反力强度较难满足顶进推力要求，提出在受力板前后加设倾斜桩来增强后背反力，并通过理论分析和实际工程应用，证明是有效可行的。

Abstract: In most of the hydraulic rehabilitation project, the replacement of the water carrying pipes are installed by jacking method. However, the anticipated reaction force are frequently failed to meet the requirement during the construction. This paper proposes a reaction enhancing method by install battered pile behind the reaction frame. Both theoretical analyses as well as the practical applications have proved that this method is an effective approach.

Key words: Pipe Replacement by Jacking, Jacking Pressures, Jacking Reaction Forces, Battered Piles