大跨度钢管混凝土拱桥成拱线形控制技术研究  

Research on the Control Technology of Arch Shape of Long Span CFST Arch Bridge

作　　者：周彦文 李书兵 唐剑 ZHOU Yanwen;LI Shubing;TANG Jian(Road&Bridge International Co.,Ltd.,Beijing 100027,China;Wuhan-Jiujiang Railway Passenger Transportation(Hubei)Co.,Ltd.,Wuhan,Hubei 430200,China)

机构地区：[1]中交路桥建设有限公司,北京100027 [2]武九铁路客运专线有限责任公司,湖北武汉430200

出　　处：《施工技术》2020年第2期55-60,98,共7页Construction Technology

基　　金：中交路桥建设有限公司科技研发项目:铁路钢管混凝土拱桥异位拼装、整体纵移和提升施工技术研究(ZJLJ-2019-09)。

摘　　要：郑万高铁汉江特大桥主桥主拱安装采用异位拼装+整体纵移+整体提升施工技术,结合施工特点,通过MIDAS/Civil有限元软件建模计算,分析各施工阶段对主拱线形的影响,确定主拱施工预拱度;同时在各施工阶段中,通过现场监控、对比分析及动态调整等技术手段,使主拱成桥线形和梁体桥面标高满足设计要求。The main arch installation of Hanjiang Super Large Bridge of Zhengzhou to Wanzhou High Speed Railway adopts the construction technology of heterotopic assembly+overall longitudinal movement+overall lifting.Combined with the construction characteristics,through the MIDAS/Civil finite element software modeling and calculation,the influence of each construction stage on the main arch line shape is analyzed,and the camber of the main arch construction is determined.At the same time,in each construction stage,the technical methods such as on-site monitoring,comparative analysis and dynamic adjustment are used to make the main arch bridge alignment and beam deck elevation meet the design requirements.

关 键 词：钢管拱 线形 预拱度 拼装 纵移 提升 

分 类 号：U445[建筑科学—桥梁与隧道工程]