文物铆接钢桥——牛角沱嘉陵江大桥维修整治关键施工技术  

Key Construction Technology for Maintenance and Renovation of Artifact Riveted Steel Bridge of Niujiaotuo Jialing River Bridge

作　　者：陈志敏 王永鹏 CHEN Zhimin;WANG Yongpeng(Wuhan Bridge Special Technology Co.,China Railway Major Bridge Engineering Group,Wuhan,Hubei 430074,China;State Key Laboratory for Health and Safety of Bridge Structures,Wuhan,Hubei 430074,China)

机构地区：[1]中铁大桥局武汉桥梁特种技术有限公司,湖北武汉430074 [2]桥梁结构健康与安全国家重点实验室,湖北武汉430074

出　　处：《施工技术》2019年第S01期1064-1068,共5页Construction Technology

摘　　要：重庆牛角沱嘉陵江大桥属于三类危桥,需进行维修整治。基于文物桥梁"修旧如旧"的维修原则和给老旧桥梁减重延长寿命的原则,混凝土桥面板和桥面系全部拆除,更换为正交异性钢桥面板,栏杆、路灯、桥头堡等附属与原桥建成时外观一致;对锈蚀杆件和有缺陷的铆钉进行更换和补强;对钢桁梁进行喷砂除锈及防腐涂装;对基础采用小型双壁钢围堰内灌注混凝土整体作为永久结构进行防冲刷处置。该桥维修整治后外观恢复到了1966年时通车时的外貌。The Jialing River Bridge belongs to the three types of dangerous bridges and needs to be repaired and rectified.Based on the maintenance principle of"repairing the old as the old"and the principle of reducing the weight and life of the old bridges,the concrete bridge deck and the deck system are all removed,replaced by orthotropic steel bridge decks,railings,street lamps,bridgeheads,etc.It is consistent with the appearance of the original bridge;the replacement and reinforcement of corroded rods and defective rivets;sandblasting and rust removal and anti-corrosion coating of steel truss beams;and the use of small double-wall steel cofferdams for concrete foundation Anti-scouring treatment as a permanent structure.After the bridge was repaired and rehabilitated,the appearance was restored to the appearance when it was opened in 1966.

关 键 词：钢桁桥 铆接 双壁钢围堰 喷砂除锈 杆件铆钉 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]