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大连造船新厂30万t级船坞扩建工程包括北码头、北坞墙、中坞墙及坞口钢浮箱等部位,其中坞墙码头常水位以下部分采用了混凝土预制沉箱结构,内部填石渣。沉箱全部采用预制,其中除水泵房沉箱及中坞墙的一个沉箱因太大在原船坞内预制外,其余48个沉箱均在位于金州区大李家乡正明寺船坞内预制场预制完成后,经海上拖运至施工现场安装。对在外场制作的沉箱的预制、安装等过程及要点进行了详细说明,以利后续工程的借鉴。
Dalian New Shipyard 300,000 t-class dock expansion project includes the North Pier, the North dock wall and dock dock steel pontoon and other parts of the dock wall pier below the water level of the concrete prefabricated caissons structure, the internal filling of the gravel . All caissons are prefabricated, except for one caisson in the water pump house caisson and the middle dock wall, which is prefabricated in the original dock. The remaining 48 caissons are all prefabricated in the prefabricated yard of the Zhengming Si dock at Da Lijia Town, Jinzhou District, Sea towing to the construction site installation. The process and key points of prefabrication and installation of caissons made in the field are described in detail to facilitate the follow-up project.