施工技术 2013年4月下 72 CONSTRUCTION TECHNOLOGY 第42卷第8期 D0I:10.7672/sgjs2013080072 海河隧道沉管预制技术* 代敬辉 (中铁十八局集团第五工程有限公司，天津300459) [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、端铜壳加工与安装、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. [关键词]隧道工程；沉管；预制；防水；施工技术 [中图分类号]U459.5 [文献标识码]A [文章编号]1002-8498(2013)08-0072-04 Technology for Prefabrication of Immersed Tube in Haihe River Tunnels Dai Jinghui (The Fifth Engineering Co.China Railway 18 Bureau Group Co. Ltd.Tianjin 300459 China) Abstract: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 pleted successfully and no leakage were observed at the bottom lateral walls and roof of the immersed tubes. Key words:tunnels;immersed tube;prefabrication;waterproofing;construction 1工程概况 个关键因素.作为管段沉放对接时GINA止水带压 海河隧道工程是天津市滨海新区中央大道穿缩的导向面，端钢壳的精度直接影响到沉放管段的 越海河的一个重要节点工程，工程路线全长4.2km “轨迹”和姿态，是沉管成功沉放对接的...
海河隧道沉管预制技术.pdf
