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双栈桥平台施工平台两侧布设临时栈桥通道,用以满足人员的交通、材料的运输、管道的铺设等。在钢护筒未插打之前,施工平台支撑于栈桥,待钢护筒插打到位后,增设平台与护筒之间的支撑体系,施工平台支撑于栈桥及护筒。双栈桥平台主要施工步骤:①双侧栈桥钢管桩基础及上部结构施工。②栈桥上龙门吊机的拼装。③利用龙门吊机进行平台的拼装。④钢护筒的精确定位、插打、固定。⑤平台支撑体系转换。⑥钻孔桩的施工。
The temporary trestle passage shall be laid on both sides of the double-deck bridge platform construction platform to meet the traffic, material transportation and pipe laying of personnel. Before the steel casing is not inserted, the construction platform is supported by the trestle. After the steel casing is inserted in place, a support system between the platform and the casing is added, and the construction platform is supported by the trestle and the casing. The main construction steps of the dual-trestle platform are as follows: ①The construction of the steel-pipe pile foundation and the superstructure on both sides of the trestle. ② Trestle gantry crane assembly. ③ use gantry cranes for platform assembly. ④ accurate positioning of the steel casing, plug, fixed. ⑤ platform support system conversion. ⑥ drilling pile construction.