大跨度双幅钢桁梁“拖拉+横移”施工技术研究  

Research on the Construction Technology of"Dragging+Lateral Movement"for Large-span Double-width Steel Truss Beams

作　　者：吕天文 LV Tianwen(No.1 Engineering Corporation Limited of CR20G,Suzhou 215151,Jiangsu,China)

机构地区：[1]中铁二十局集团第一工程有限公司,江苏苏州215151

出　　处：《工程技术研究》2023年第17期50-53,共4页Engineering and Technological Research

摘　　要：文章以常泰长江大桥北接线主线上跨G345国道特大桥155 m钢桁梁施工为背景,介绍了采用“拖拉+横移”的方法,在不影响通航和通行的情况下,同时减少大跨度钢桁梁跨越国道和2条航道临时支架投入,减少措施费用的关键技术,包括拖拉支架设计、拖拉和横移的施工工艺流程及关键技术等,为后续类似条件及类似桥梁的施工提供参考。Based on the construction of 155 m steel truss beam of the main line of Changtai Yangtze River Bridge northern connection line overcrossing G345 national highway superlarge bridge,this paper introduces the key technology of using the method of"dragging+lateral movement"to reduce the temporary support investment of the large-span steel truss beam crossing the national highway and two waterways and reduce the cost of the measures without affecting the navigation and passage,including the design of the dragging support,the construction process and key technology of dragging and lateral movement,so as to provide reference for the construction of similar conditions and similar bridges in the future.

关 键 词：钢桁梁 拖拉 横移 

分 类 号：U445[建筑科学—桥梁与隧道工程]