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大跨桥梁颤振控制的试验研究

Testing Study on Flutter Control of Long-span Bridges by Using Tuned Mass Dampers

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【作者】 顾明吴炜项海帆

【Author】 Gu Ming; Wu Wei;Xiang Haifan(Department of Bridge Engineering, State Laboratory for Disaster Reduction in Civil Engineering,TongjiUniversity, Shanghai,200092)

【机构】 同济大学桥梁工程系土木工程防灾国家重点实验室

【摘要】 以广东虎门大桥为背景,在同济大学TJ-1边界层风洞中进行了被动调质阻尼器对颤振控制的研究.试验中考虑了结构阻尼特性、主梁断面外形、调质阻尼器参数(质量惯矩比、频率比及阻尼比)等对控制效率的影响,得出了一些新的结论:TMD对低阻尼桥的控制效果优于高阻尼桥;对较"钝"立梁断面的桥的控制效果优于较"流线"主梁断面的桥;TMD的频率及阻尼设置对控制效果均有影响,前者大于后者.

【Abstract】 A sectional model testing study on flutter control of the Tiger Gate Bridge by using tuned mass damper was carried out in T-J1 Boundary Layer Wind Tunnel in Tongji University. The control effectiveness was confirmed through the test, and the effects of the variance of parameters,such as structural damping, shape of the deck cross section, frequency ratio of TMD to bridge and damping of TMD, on the control effectiveness were also investigated. The new results are shown as follows: ① It is more effective for TMD to control flutter of bridges with lower structural damping ratio than those with higher structural damping ratio; ② It is more effective for TMD to control flutter of bridges with "more bluff" deck cross section than those with "more streamlined" deck cross section; ③ Frequency ratio of TMD to bridge and damping ratio of TMD have both effects on the control effectiveness,and the effect of the former is greater than that of the latter.

【关键词】 大跨桥梁调质阻尼器颤振
【Key words】 Long-span bridgeTuned mass damperFlutter
【基金】 国家教委“跨世纪优秀人才”专项基金,上海市“优秀学科带头人资助计划”项目
  • 【文献出处】 同济大学学报(自然科学版) ,JOURNAL OF TONGJI UNIVERSITY , 编辑部邮箱 ,1996年02期
  • 【分类号】U448
  • 【被引频次】19
  • 【下载频次】278
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