深水薄覆盖层区大型双壁钢围堰施工技术  

Construction technology for large double-wall steel cofferdam in deep-water shallow cover layer

作　　者：穆清君[1] 李贤仰[1] 杨武 潘传宗 MU Qing-jun;LI Xian-yang;YANG Wu;PAN Chuan-zong(CCCC Second Harbor Engineering Co.,Ltd.,Wuhan,Hubei 430040,China)

机构地区：[1]中交第二航务工程局有限公司,湖北武汉430040

出　　处：《中国港湾建设》2024年第6期83-90,共8页China Harbour Engineering

基　　金：湖北省自然科学基金项目(2022CF558)。

摘　　要：以长沙香炉洲大桥索塔墩基础施工为依托,综合考虑桥址区的地质、水文、沿岸地形地貌、吊装能力等因素,对双壁钢围堰制造、下水、浮运、精确定位、着床等施工关键技术进行研究,提出竖向分节、水平成环接高、整体浮运、平台拉锚系统精确定位大型钢围堰施工工艺。工程实践证明,提出的深水薄覆盖层场域钢围堰精确定位施工成套技术是成功的,可为类似工程提供参考。Based on the construction of the cable pier foundation of the Xiangluzhou Bridge in Changsha,the key technologies of manufacturing,launching,floating,precise positioning and implantation for double-wall steel cofferdam were studied by comprehensively considering the factors such as geology,hydrology,coastal landform and lifting capacity in the bridge site,and the construction technology to accurately determine large steel cofferdam with vertical segmentation,horizontal looped connection,whole floating transport and platform anchoring system was put forward.The proposed technology can ensure the successful construction for steel cofferdam in the field of deep water shallow cover layer,which was proved by field practice.This paper can provide a reference for similar projects.

关 键 词：深水 薄覆盖层 桥梁基础 双壁钢围堰 定位系统 

分 类 号：U655.4[交通运输工程—港口、海岸及近海工程] U445.4[交通运输工程—船舶与海洋工程]