武汉天兴洲公铁两用长江大桥斜拉桥施工监控  

Construction Monitoring and Control of Cable-Stayed Bridge of Wuhan Tianxingzhou Changjiang River Rail-cum-Road Bridge

作　　者：石建华[1] 朱运河[1] 李卫华[1] 吴志刚[1] 

机构地区：[1]中铁大桥勘测设计院有限公司,湖北武汉430050

出　　处：《世界桥梁》2010年第2期24-28,共5页World Bridges

摘　　要：武汉天兴洲公铁两用长江大桥主桥设计为主跨504 m的三索面、三主桁斜拉桥,钢桁梁架设方法首次采用桁段法与杆件散拼法相组合的方法。施工监控结合钢桁梁架设方案与工序变化等工程实际情况,应用基于无应力状态法理论编制的空间结构分析软件3Dbridge研究并确定斜拉索二次张拉到位的控制方案及相应的工程变化应对措施,实现钢桁梁架设过程的连续性与多工序同步性,并系统研究及实施三主桁、三索面合龙口多手段多向空间变形主动控制技术,实现高精度、快速合龙的工程目标。第1期静动载试验以及近1年的运营情况验证了大桥结构线形与内力满足设计要求。The main bridge of Wuhan Tianxingzhou Changjiang River Rail-cum-Road Bridge was designed as a three-cable-plane and three-main-truss cable-stayed bridge with a main span 504 m and the steel truss girders of the bridge were erected for the first time by the combined method of truss block installation and member piece-by-piece assembling.For the construction monitoring and control of the bridge,the spatial structure analysis software 3Dbridge complied according to the unstressed state method theory was used t...

关 键 词：斜拉桥 三主桁 三索面 无应力状态法 合龙 施工监控 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]