地下连续墙组合式止水结构施工关键技术研究  

Research on Key Technology for Construction of Combined Water⁃stop Structure of a Diaphragm Wall

作　　者：陈学锋 云广琨 CHEN Xuefeng;YUN Guangkun(China Communications Construction Group Southwest Construction Co.,Ltd.,Beijing 101101,China)

机构地区：[1]中交建筑集团西南建设有限公司,北京101101

出　　处：《施工技术（中英文）》2023年第11期94-97,共4页Construction Technology

基　　金：2021年江苏省教育厅高等学校自然科学研究面上项目(21KJD560005);2021南通市科技计划项目(JCZ21075);2022年南通市第六期江海英才市级培养专项(通委人才办[2022]12号)。

摘　　要：在某隧道工程中,遵循结构承载与防水相二合一、逆向多路径复合止水的原则,使用地下连续墙组合式止水结构施工技术,即通过修筑导墙,打设外H型钢桩,在接缝一侧地下连续墙进行成槽处理,清除槽底淤泥及残渣,吊放接头管,吊装多边异形加肋板钢管桩,二次清理槽底,吊放钢筋笼,下放导管,在水下浇筑混凝土,在多边异形加肋板钢管桩内部沉设H型钢桩并浇筑混凝土,在接缝另一侧地下连续墙进行成槽处理,拔出接头管,完成整个地下连续墙围护结构施工,为地下围护结构防水提供较有效的施工方法,提高施工安全性,技术方案经专家论证,可行有效。In a tunnel project,according to the principle of the combination of structural bearing and waterproof,and the principle of reverse multi-path composite water-stop,the construction technology of underground continuous wall combined water-stop structure is used.Namely,through the construction of the guide wall,the external H-shaped steel pile is set up.The underground continuous wall on one side of the joint is grooved,the sludge and residue at the bottom of the groove are removed,the joint pipe is lifted,the multilateral special-shaped ribbed steel pipe pile is lifted,the bottom of the groove is cleaned for the second time,the steel cage is lifted,the pipe is lowered,the concrete is poured underwater,the H-shaped steel pile is sunk inside the multilateral special-shaped ribbed steel pipe pile,and the concrete is poured.The underground continuous wall on the other side of the joint is grooved and the joint pipe is pulled out.Till the construction of the whole underground continuous wall enclosure structure is completed.The research result of this paper provides a more effective construction method for the waterproof problem of the underground enclosure structure construction,strengthens the construction safety,and truly practices the people-oriented design concept.The technical scheme has been proven by experts to be feasible and effective.

关 键 词：隧道 地下连续墙 围护结构 防水 逆向止水 施工技术 

分 类 号：TU753[建筑科学—建筑技术科学]