大连湾海底隧道沉管预制干坞坞口设计与应用  

Design and application of dry-dock entrance for prefabricated immersed tube of Dalian Bay Subsea Tunnel

作　　者：尹永欣 张京京 胡建波 YIN Yong-xin;ZHANG Jing-jing;HU Jian-bo(CCCC Tianjin Port Engineering Design and Consulting Co.,Ltd.,Tianjin 300461,China)

机构地区：[1]中交天津港湾工程设计院有限公司,天津300461

出　　处：《中国港湾建设》2024年第10期58-62,共5页China Harbour Engineering

摘　　要：大连湾海底隧道采用沉管法建设,由固定干坞承担18节沉管预制。坞口作为干坞与大海之间的屏障,在挡水防浪保障坞内安全方面至关重要,在安全、经济的前提下尚需兼顾施工便捷和使用方便。在总结国内外典型沉管预制场坞口形式的基础上,采用固定干坞法、重力式坞口、大沉箱浮坞门方案,坞口采用帷幕灌浆+止水带+钢闸门+混凝土结构止水体系,设有消能式自流灌水坞门墩结构,浮坞门沉箱采用原位现浇方案,可为类似工程提供参考。The Dalian Bay Subsea Tunnel is constructed using the immersed tube method,where 18 sections of immersed tubes are prefabricated using a fixed dry-dock.The dock entrance serves as a protective barrier between the dry-dock and the sea,playing a crucial role in ensuring dock safety by preventing water ingress and providing wave protection.On the premise of safety and economy,it is necessary to take into account the convenience of construction and the ease of use.On the basis of summarizing the typical dock gate types for prefabrication of immersed tubes both domestically and internationally,this project adopts the fixed dry dock method,gravity-type dock entrances,and large floating caisson gate system.The dock entrance system incorporates curtain grouting,water stop strips,steel gates,and concrete structure water stop system,and is equipped with the energy dissipation self-flowing water dock gate pier structure.The caisson of floating dock gate adopts cast-in-situ scheme,which can provide reference for similar projects.

关 键 词：坞口结构 止水结构 浮坞门 超大沉箱 

分 类 号：U655.4[交通运输工程—港口、海岸及近海工程] U455.46[交通运输工程—船舶与海洋工程]