粉房湾长江大桥主桥钢桁梁架设施工技术  

Construction Techniques for Erection of Steel Truss Girder of Main Bridge of Fenfangwan Changjiang River Bridge

作　　者：王存贵 王殿永 高杰 靳春尚 

机构地区：[1]中国建筑第六工程局有限公司桥梁公司,天津300457

出　　处：《桥梁建设》2012年第A01期33-37,共5页Bridge Construction

基　　金：财政部2011年度施工新技术研究与开发资金预算(20111492)拨款项目~~

摘　　要：重庆粉房湾长江大桥主桥为跨度(216.5+464+216.5)m的双塔双索面半飘浮体系钢桁梁斜拉桥,主梁采用钢桁梁结构。钢桁梁采取散拼架设,南、北岸钢桁梁根据地形情况选取了不对称的方式施工。南岸钢桁梁由边跨向中跨架设,边跨钢桁梁采用支架拼装,先架设中间桁架,再利用桥面汽车吊架设边纵梁、边桥面板等构件;主跨钢桁梁采用悬臂拼装。北岸钢桁梁采用双悬臂对称架设,主墩墩顶及两侧共5个节段钢桁梁采用墩旁托架拼装。The main bridge of Fenfangwan Changjiang River Bridge in Chongqing City is a semi-floating system steel truss girder cable-stayed bridge with double pylons,double cable planes and with span arrangement（216.5＋464＋216.5） m.The main girder of the bridge is designed as the steel truss girder structure erected by the piece-by-piece assembling.In the light of the topographic conditions of the south and north banks,the asymmetric way of erection was chosen for the girder.The steel truss girder on the south bank side was erected from the side span towards the central span.The girder of the side span was assembled on the scaffolding,the girder in the middle was erected first and then the components like the edge stringers and edge deck plates were erected,using the deck truck cranes.The girder for the main span was erected by the cantilever assembling method.The girder of the north bank was erected by the balanced two-cantilever assembling method and the 5 blocks of the girder atop and on both sides of a main pier were assembled on the pier-side brackets.

关 键 词：斜拉桥 钢桁梁 支架拼装 悬臂拼装架桥 桥梁施工 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] U445.46[交通运输工程—道路与铁道工程]