某中承式钢筋混凝土箱型拱桥危桥改造技术研究  

Research on the reconstruction technology of a dangerous midheight-deck type reinforced concrete box arch bridge

作　　者：赵军 ZHAO Jun(Road Construction Service Center of Shawan District,Leshan City,Sichuan Province,Leshan 614900,China)

机构地区：[1]四川省乐山市沙湾区公路建设服务中心,四川乐山614900

出　　处：《中国高新科技》2024年第13期118-119,145,共3页

摘　　要：某中承式钢筋混凝土箱型拱桥,因吊杆“超期服役”,吊杆、锚头均表现出严重锈蚀的病害,且受到建设年代设计手段及设计理念的局限性制约,桥面系结构缺陷,随着交通流量及超重车辆迅速增加,桥梁处于“危险”状态。经特殊检测,采取了立即封闭交通的措施,并按照抢险救灾方式对危桥进行了维修整治,早日消除了桥梁安全隐患。A midheight-deck type reinforced concrete box arch bridge,due to the boom“overtime servic”,the boom and anchor head show serious rust diseases,and by the limitations of the design means and design concepts of the construction era,there are structural defects in the bridge deck system,with the rapid increase of traffic flow and overweight vehicles,the bridge is in a“dangerous”state,and the traffic closure measures are taken immediately after special inspection,the dangerous bridge was renovated by means of emergency rescue and disaster relief,and the bridge safety hazards are eliminated as soon as possible.

关 键 词：中承式拱桥 吊杆 桥面系 钢纵梁 加固施工 

分 类 号：U448[建筑科学—桥梁与隧道工程]