双幅桥面桥梁主梁气动干扰效应研究  

Study of Aerodynamic Interference Effect on Main Girders of Twin-Deck Bridges

作　　者：陈政清[1] 牛华伟[1] 刘志文[1] 

机构地区：[1]湖南大学风工程试验研究中心,湖南长沙410082

出　　处：《桥梁建设》2007年第6期9-12,共4页Bridge Construction

基　　金：国家自然科学基金资助项目(50478051;50608030)

摘　　要：基于2座国内在建的双幅桥面桥梁进行节段模型风洞试验,研究双幅桥面之间的气动干扰效应及其对桥梁颤振稳定性、涡激振动特性和静气动力特性的影响,单、双幅桥面风洞试验结果的差异表明两桥面之间存在不可忽略的气动相互干扰,并可能对桥梁振动产生不利影响。The twin-deck bridges interference effect authors in this paper have made wind tu now being constructed in China and have between the twin decks and the influence nnel tests for segment models of two conducted a study of the aerodynamic s of the effect on the flutter stability, vortex-excited vibration and static aerodynamic characteristics of the bridges. The differences of wind tunnel test results of the single deck and twin decks of the bridges reveal that the aerodynamic mutual interference that can not be negligible exists between the twin decks of the bridges and will possibly bring about adverse influence on the vibration of the bridges.

关 键 词：颤振 涡激振动 气动干扰 静气动力 双幅桥面 

分 类 号：U441[建筑科学—桥梁与隧道工程]