双幅桥面桥梁主梁气动干扰效应研究

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。

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

The authors in this paper have made wind tunnel tests for segment models of two twin-deck bridges now being constructed in China and have conducted a study of the aerodynamic interference effect between the twin decks and the influences 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.