摘要
宜宾市小南门金沙江大桥是一座主桥为中承式劲性钢骨钢筋砼结构拱桥 ,该桥结构新颖、美观 ,是连接宜宾新老市区的交通咽喉 ,过桥的人流量与车流量的快速增长加大了吊杆的疲劳破坏 ,吊杆的锈蚀降低其承载能力 ,从而导致了吊杆断裂引起桥塌。通过对塌桥事故原因的分析 ,认为修缮方案应为 :更换吊杆 ,增加纵梁 ,减少“飘浮式”体系对该桥带来的影响。
Little south door Jinsha River bridge of Yibin City was an arch bridge of stiff steel skeleton and steel composite construction,its construction is novel,pleasing to the eye and it was the traffic throat,connecting new city proper and old city proper of Yibin City.The magnitude of traffic flow increased the bearing of suspender,the corrision of suspender reduced bearing capacity.Thus it caused the rupture of suspender and collapse.The renavation project is changing suspender?increasing rupture,reducing the effect of floating structure.
出处
《河南城建高等专科学校学报》
2002年第2期15-17,共3页
Journal of Henan Urban Construction Junior College
关键词
原因
修缮
拱桥
吊杆
飘浮式结构
通车量
宜宾市
arch bridge
suspender
floating structure
magnitude of traffic flow,renovation
