深水高桩承台抱箍法大型有底钢套箱施工技术研究  

Research on Construction Technology of Large-scale Bottomed Steel box With hoop Method for Deep-water Elevated Pile cap

作　　者：潘孝金 吴昊 PAN Xiaojin;WU Hao(China Huaxi Enterprise Co.,Ltd.,Shenzhen Guangdong 518034)

机构地区：[1]中国华西企业有限公司,广东深圳518034

出　　处：《智能建筑与工程机械》2020年第9期33-36,共4页Intelligent Building and Construction Machinery

摘　　要：马来西亚登嘉楼开启桥项目的主墩高桩承台位于河道通航的航道上。承台部分水深7~8m,桩基础为直径1m的混凝土预制管桩。承台先进行混凝土预制管桩施打,再进行有底钢套箱安装,钢套箱采用钢抱箍作为支座。因面积较大,钢套箱底板和侧板模块化设计,分块吊装到位,在底板模块与混凝土预制管桩之间形成的沟槽内,进行封底混凝土浇筑,完成钢套箱的阻水,形成承台干作业施工环境。基于此,本文从设计、吊装、封底混凝土浇筑等方面详细介绍了主墩高桩承台抱箍法有底钢套箱的施工技术,以期为相关施工提供参考。The main pier high pile cap of the opening bridge project in Terengganu,Malaysia is located on the navigable channel of the river.The water depth of the cap is 7-8m,and the pile foundation is a concrete precast pipe pile with a diameter of 1m.The pile cap is firstly driven by concrete prefabricated pipe piles,and then the bottomed steel box is installed.The steel box uses steel hoop as the support.Due to the large area,the steel box bottom plate and side panels are modularly designed,and they are hoisted in place in blocks.In the trench formed between the bottom plate module and the concrete precast pipe piles,the bottom-sealed concrete is poured to complete the water blocking of the steel box.Form a construction environment for dry operation of the cap.Based on this,this article introduces in detail the construction technology of the main pier high pile cap hoop method bottomed steel box from the aspects of design,hoisting,and bottom-sealing concrete pouring,in order to provide a reference for related construction.

关 键 词：深水基础 高桩承台 抱箍 钢套箱 沟槽 封底混凝土 预制管桩基础 

分 类 号：U445[建筑科学—桥梁与隧道工程]