栏杆缘石构造对箱形主梁颤振稳定性的影响  

Influence of Railing Curbstone Structure on Flutter Stability of Box Main Girder

作　　者：刘慈军[1] 郭震山[2] 朱乐东[2] 

机构地区：[1]宁波市高等级公路建设指挥部,浙江宁波315192 [2]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《桥梁建设》2008年第2期20-22,44,共4页Bridge Construction

摘　　要：以某一主跨688 m的海港大桥为例,通过节段模型风洞试验研究栏杆缘石构造对箱形主梁颤振稳定性的影响。风洞试验结果表明,与连续的缘石构造相比,离散的缘石构造可以明显改善主梁的颤振稳定性,从而大幅提高桥梁的颤振稳定性。Taking a bay bridge with a main span 688 m as an example, this paper investigates the influence of railing curbstone structure on the flutter stability of box main girder through sectional model wind tunnel test. The results of the test show that in comparison with the continuous curbstone structure, the separated railing curbstone structure can significantly improve the flutter stability of the main girder and consequently can greatly improve the flutter stability of a bridge of similar kind.

关 键 词：栏杆缘石 箱形梁 颤振稳定性 节段模型 风洞试验 

分 类 号：U441.3[建筑科学—桥梁与隧道工程] U443.7[交通运输工程—道路与铁道工程]