北辰特大桥72号墩巨型双臂钢围堰深水施工技术研究  

Research on Deep Water Construction Technology of Large Double-arm Steel Cofferdam for No.72 Pier in Beichen Super Major Bridge

作　　者：朱传奇 ZHU Chuanqi(The Fifth Engineering Co. , Ltd. , of China Railway 18th Bureau Group, Tianjin 300459, China)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300459

出　　处：《中国水能及电气化》2022年第4期27-33,共7页China Water Power & Electrification

摘　　要：文章以北辰特大桥项目为背景,主要针对其跨越青龙湾减河段72号墩围堰施工展开论述。72号墩位于青龙湾减河主河道中,河道水深、流大、速急,综合考虑现场施工情况,围堰采取无底双臂钢围堰自浮式结构,整节整体加工,进行钢围堰分块、分节拼装及下放,最终取得了预期的效果。此次研究可为类似桥梁项目施工积累经验。Beichen Super Major Bridge Project is adopted as the background in the paper.The construction of No.72 pier cofferdam across Qinglong Bay Jianhe River Reach is discussed mainly.No.72 Pier is located in the main river of Jianhe River in Qinglong Bay.The river is characterized by deep water,large flow and rapid speed.The construction situation on site is considered comprehensively.The self-floating structure of bottomless double-arm steel cofferdam is adopted.The whole section is processed as a whole.The steel cofferdam is assembled and installed in blocks and sections.Finally,the expected results are achieved.The study can accumulate experience for similar bridge construction projects.

关 键 词：北辰特大桥 72号墩 巨型钢围堰 深水 拼装 

分 类 号：U44[建筑科学—桥梁与隧道工程]