富水砂卵石地层大型沉管隧道轴线干坞坞口施工技术  

Construction Technology of Axis Dry-dock of Large Immersed Tunnel in Sand Gravel Layer

作　　者：仇正中[1,2,3] 冯先导 王金绪 QIU Zhengzhong;FENG Xiandao;WANG Jinxu(CCCC Second Harbor Engineering Co.,Ltd.,Wuhan,Hubei 430040,China;Key Lab of Large-span Bridge Construction Technology,Ministry of Transportation,Wuhan,Hubei 430040,China;Research and Development Center of Transportation Industry of Intelligent Manufacturing Technologies of Transport Infrastructure,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 [2]长大桥梁建设施工技术交通行业重点实验室,湖北武汉430040 [3]交通运输行业交通基础设施智能制造技术研发中心,湖北武汉430040

出　　处：《施工技术（中英文）》2022年第7期49-52,共4页Construction Technology

基　　金：中国交建科技项目:强冲刷河段深厚强透水地层大型沉管隧道建设关键技术研究(2018-ZJKJ-17)。

摘　　要：基于襄阳内河沉管隧道项目,结合工程富水砂卵石地质条件,通过方案比选,确定干坞选型及坞口结构形式。针对干坞坞口处锁口钢管桩施工技术展开研究,解决大直径钢管桩预制、吊装及与格型地下连续墙连接等问题,给出了精度控制及纠偏措施,解决锁口钢管桩防绕流问题。Based on construction of Xiangyang inland immersed tunnel, the structural form of dry dock and dock head is determined through the scheme comparison and selection according to the sand gravel layer. According to the construction technology of the locking steel pipe piles at the dock head, the problems of prefabrication, hoisting and connection with the lattice diaphragm wall of the large-diameter steel pipe piles are solved. The precision control and rectification measures are given and also the prevention of flow around in the locking steel pipe piles is solved.

关 键 词：沉管隧道 干坞 锁口钢管桩 纠偏 防绕流措施 

分 类 号：TU921[建筑科学—建筑设计及理论]