八字形钢-混凝土组合拱桥的抗震性能研究  

Seismic Performance of Chorded Steel-Concrete Composite Arch Bridge

作　　者：周志祥[1] 徐勇[1,2] 高燕梅[1] 

机构地区：[1]重庆交通大学,重庆400074 [2]西南交通大学,四川成都610031

出　　处：《重庆交通大学学报（自然科学版）》2009年第4期641-645,共5页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金项目(50578168);交通部西部交通建设科技项目(200631881448)

摘　　要：介绍了八字形钢-混凝土组合拱桥的基本概念,讨论了其动力特性及其结构性能;采用时程分析方法对其地震响应进行了计算,并与普通钢筋混凝土肋拱桥的地震响应进行了比较。结果表明,八字形钢-混凝土组合拱桥具有很好的延性抗震能力,较普通钢筋混凝土肋拱桥能够抵御更高烈度的地震作用。The basic conception of a chorded steel-concrete composite arch bridge is introduced. And its dynamic characteristics and structural performances are discussed. Its response to earthquakes is calculated by means of time-history analysis method, and the comparison of that with the general concrete ribbed arch bridges has proved that the chorded steel-concrete has a stronger resistance to earthquakes, so it can withstand stronger earthquake, comparing with the general concrete ribbed arch bridges.

关 键 词：钢-混凝土组合拱桥 动力特性 抗震性能 

分 类 号：U448.222[建筑科学—桥梁与隧道工程]