钢管系杆拱桥整体浮吊架设施工技术  

Construction Technology of the Whole Floating Crane Erection of Steel Pipe Arch Bridge

作　　者：王爱平 

机构地区：[1]中铁十局集团有限公司,济南250101

出　　处：《铁道工程学报》2017年第9期47-52,共6页Journal of Railway Engineering Society

摘　　要：研究目的:钢管系杆拱桥是我国目前在城市桥梁中应用比较广泛的桥梁类型之一,尤其在通航河道上,钢管系杆拱桥是设计时首选的桥梁类型。考虑到河道的通航需求,钢管系杆拱桥的施工一般采用侧位拼装、整体吊装施工工艺较多,而整体吊装中采用浮运拖拉架设和整体浮吊两种施工方法。本文通过对丹阳市吕东大桥钢管系杆拱桥整体吊装施工工艺的研究,旨在形成一套详细的钢管系杆拱桥整体浮吊架设综合施工技术。研究结论:(1)钢管系杆拱桥整体浮吊架设施工工艺流程包括:浮吊施工准备,浮吊船就位,整体试吊,浮吊船同步后退,同步顺时针旋转90°,同步向桥位处移动,微调浮吊船、主桥就位,人工桥位精度调整、落桥,解钩、浮吊船驶离现场;(2)钢管系杆拱桥整体浮吊架设施工技术的优点有:主桥拼装与引桥施工可以同步进行,可缩短施工工期;施工安全风险小;浮吊吊装占用航道时间较短,仅占用2~3 h即可完成吊装作业,封航时间大大缩短;(3)丹阳吕东大桥采用整体浮吊架设施工,顺利完成了吊装任务,因此既有航道上钢构桥梁整体架设施工具有较大的推广前景和技术指导作用。Research purposes： Steel tube arc bridge is one of the bridge types that is more extensively used in urban bridges of China. Especially on the navigable river bridge design, steel tube arc bridge is the preferred type. In consideration of the navigable demand of channel, the side assembled and integral lifting construction technology are more generally used when it comes to the construction part of this bridge. The integral lifting has two methods, including drag erection and the whole floating crane. In this paper, the whole hoisting construction technology of the main steel pipe tied arch bridge of Danyang Lvdong Bridge is studied, to from a set of detaild comprehensive construction technology of the whole floating crane erection of steel pipe tied arch bridge. Research conclusions：（ 1 ） The whole floating crane erection construction processes of steel pipe arc bridge include： preparations for construction of the floating crane, crane barge ship in place, the whole crane, synchronous retreat of floating crane ship, synchronous rotating clockwise by 90 degrees, synchronous moving toward the bridge, fine - tuning floating crane ship, main bridge in place, artificial siting precision adjustment, deconstruction, floating crane ship away from the scene. （2） The advantages of the whole floating crane construction technology of steel pipe arc bridge include ： the main bridge assembly and approach bridge construction can be carried out in a synchronous way, which can shorten the construction period; The construction safety risk is small; The hoisting can be completed in a short time, only 2 3 h can be completed, the time of sealing is greatly shortened. （3） Using the floating crane erection construction Danyang Lvdong Bridge, successfully completed the assembly task, therefore the whole erection construction on the existing channel has great promotion prospects and technical guidance.

关 键 词：钢管系杆拱桥 整体浮吊架设 同步旋转 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]