拖拉法跨铁路特大桥钢砼结合连续梁施工技术

Construction technology of steel concrete combination continuous beam for a long-span bridge crossing railway by dragging method

在新建铁路的选线和设计时,不可避免与既有铁路、公路、城市道路、河流等产生立体交叉。这类工程的桥梁施工中,如何最大限度地减少乃至消除桥梁施工对既有线行车或河流通航的干扰是施工中的关键问题。在秦沈客运专线跨沈山铁路特大桥施工中,在保证既有线行车正常的前提下,采用整体拼装和设置反向轮单侧拖拉架设钢梁的施工技术,利用钢梁自身强度搭设三脚支架立外模并连续浇注桥面板混凝土,解决了此类条件下桥梁施工问题,为类似工程的施工积累了经验。

When a new railway is selected and designed,the bridge crossings over old railway,highway,urban road and river are inevitable.In the construction of these bridges,the key point is how to reduce and eliminate the disturbance of bridge construction on old railways or rivers.During the construction of the long-span bridge in Qinshen railway over Shenshan railway,the construction technology of total assembling and dragging steel beam unilaterally with reverse wheel is adopted with the normal work of existing ra...