摘要
海河隧道工程采用沉管法工艺施工,河中沉管分为3节,每节沉管为"两孔三管廊"的矩形箱式结构,沉管在干坞内预制。主要叙述了沉管预制主要施工技术,介绍了管段起浮层做法、管段的模板设计安装拆除、沉管混凝土质量控制、端钢壳加工与安装、聚脲防水等技术要点。按照笔者所述工艺,顺利完成了全部沉管沉放、对接作业,沉管底板、外侧墙、顶板未发现任何渗漏点。
Haihe River Tunnel project used immersed tube method.The immersed tube was divided into three segments and each segment was a rectangle box-shaped structure with two holes and three galleries.The immersed tubes were fabricated in dry dock.This paper introduces the construction technology for prefabrication of immersed tubes,including the fabrication of the tube floating layer,design,installation and demolition of tube formwork,quality control for immersed tube concrete,fabrication and installation of end steel case,polyurea waterproofing.According to the method described,the sinking of all immersed tubes as well as their connections were completed successfully and no leakage were observed at the bottom,lateral walls and roof of the immersed tubes.
出处
《施工技术》
CAS
北大核心
2013年第8期72-75,共4页
Construction Technology
基金
中国铁道建筑总公司科研项目:软基条件下海河隧道沉管施工综合施工技术(09-03B)
关键词
隧道工程
沉管
预制
防水
施工技术
tunnels
immersed tube
prefabrication
waterproofing
construction
