涵洞顶管施工中后背反力增强设计方案分析  

Enhancing Reactions for the Pipe Jacking in Hydraulic Engineering Projects

作　　者：王士恩[1] 

机构地区：[1]广东省水利水电科学研究院,广州510610

出　　处：《土工基础》2012年第5期61-62,81,共3页Soil Engineering and Foundation

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。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.

关 键 词：顶管施工 顶进推力 后背反力 倾斜桩 

分 类 号：TV672[水利工程—水利水电工程]