偏心斜靠式钢箱系杆拱桥浮拖法架设施工技术  

Construction Technology of Erecting Eccentric Leaning Type Steel Box Tied Arch Bridge Based on the Floating-hauling Method

作　　者：严朝锋 Yan Chaofeng(China Railway 20th Bureau Group First Engineering Co. Ltd. , Suzhou Jiangsu 215151, 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：《铁道建筑技术》2017年第4期57-60,共4页Railway Construction Technology

摘　　要：以跨越苏南运河高等级航道的新建云梨大桥为例,重点介绍了总重2 700 t的偏心斜靠式钢箱系杆拱在陆地支架上拼装,形成整体钢结构系杆拱。利用浮船作为水上移动前支点,通过千斤顶的牵引及滑移支点的滚动,分幅拖拉过河架设。该技术具有经济、高效、安全风险低的特点,可供类似工程参考。Taking the newly-built Yunli Bridge crossing the high grade channel of South Jiangsu Canal as an example,this paper mainly introduced the construction technology of eccentric leaning type steel box tied arch（ with a total weight of 2700 t） assembling on land support,and forming a whole steel structure tied arch. By using the floating vessel as the moveable front-support on waterways,the erecting construction was carried out respectively through the traction of the jack and the rolling of the sliding fulcrum. The technology has the characteristics of economy,high efficiency and low safety risk,which can be served as a reference for similar engineering.

关 键 词：钢箱系杆拱 支点转换 浮拖法 

分 类 号：U445.467[建筑科学—桥梁与隧道工程]