Mechanism of Flutter Control of Suspension Bridges by Winglets
王秀伟 刘高
摘 要:从能量的角度研究气动翼板控制悬索桥颤振的物理机理.基于弯扭二模态耦合颤振系统,分别推导了气流由主梁和一对气动翼板输入系统的能量以及结构阻尼耗散能量的表达式.以某跨海方案桥为例进行了研究,结果表明:气动翼板能有效耗散气流由主梁输入系统的能量,桥梁颤振临界风速提高达30%.
关键词:桥梁工程;颤振;能量;气动翼板
分类号:U448.251.3 文献标识码:A
文章编号:0451-0712(2005)06-0046-04
作者单位:王秀伟(中交公路规划设计院,北京市,100010)
刘高(中交公路规划设计院,北京市,100010)
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收稿日期:2005年1月14日 |
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