特大跨径悬索桥上部结构施工关键技术研究  

Key technology in superstructure construction for suspension bridges

作　　者：吴胜东[1] 冯兆祥[1] 蒋波[1] 

机构地区：[1]江苏省长江公路大桥建设指挥部,江苏南京210004

出　　处：《土木工程学报》2007年第4期32-37,共6页China Civil Engineering Journal

摘　　要：介绍了目前位居“中国第一、世界第三”的润扬大桥悬索桥上部结构施工中无抗风缆猫道设计与施工、主缆索股牵引新系统的形成、钢箱梁吊装专用设备研制等关键技术研究的方法、过程及结论。其中,无抗风缆猫道在非正交风作用下采用六分力试验进行抗风稳定分析,并开展了减振系统研究。通过研究,采用了双线往复门架式牵引系统,自主研制了能实现均衡放索的大吨位主牵引卷扬机、被动放索机构等关键机具。研制开发出的钢箱梁吊装的关键设备-全液压跨缆吊机,具有自主产权,采用模块化设计,并进行计算机集中控制;其起吊能力大,可实现多机组合同步联吊。The key technologies in design and construction of the superstructure of Runyang Suspension Bridge, such as the erection of catwalks, the main stand hauling system and special lifting equipment for steel girders, are presented. A six-component test is applied in the wind stability experiments of the catwalk system without wind-resist cables under bevel winds, to study the vibration absorbing system. The hauling system is adopted in accordance with the results of the study. Critical equipment, such as the large tonnage winch and passive unreeling machine, are manufactured. The central computer controlled hydraulic deck erection gantry, modularly designed and operational in groups, is the most important equipment for lifting the steel girders.

关 键 词：悬索桥 上部结构 猫道 牵引系统 跨缆吊机 

分 类 号：U445[建筑科学—桥梁与隧道工程]