简支多片空心板梁桥模态试验研究
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摘要
该文通过对205国道子牙新河北堤桥简支多片空心板梁桥进行冲击试验的实例,基于输出响应用随机子空间法进行了模态识别。模态试验结果表明:简支板梁桥的前3阶模态分别为纵向1阶竖弯、竖向扭转、横向竖弯和纵向2阶弯曲,与理论计算结果一致,可为相关的科研人员参考。
The article introduces the shock test of the simple-supported multi-sheet hollow plate girder bridge of Beidi Bridge on Ziyaxin River in 205 National Highway and the modal identification based on the output sound application of stochastic subspace method.The modal test result shows that the first three steps of mode for the simply-supported plate girder bridge are separately the longitudinal one-step vertical bending,vertical turn,transverse vertical bending and longitudinal two-step bending,which are identical with the theoretical computation result and can be referred for the relative scientific research members.
引文
[1]闫桂荣,段忠东,欧进萍.基于结构振动信息的损伤识别研究综述[J].地震工程和工程振动,2007,27(3):95-103.
    [2]刘济科.基于振动特性的损伤识别方法的研究进展[J].中山大学学报(自然科学版),2004,43(6):57-61.
    [3]D.Ewins.Modal Testing,second ed.,Research Studies Press,Baldock,2000.
    [4]B.Peeters,G.De Roeck.Reference-based stochastic subspaceidentification for output-only modal analysis[J].MechanicalSystems and Signal Processing,1999,13(6):855-878.
    [5]常军,张启伟,孙利民.随机子空间方法产生虚假模态原因分析[J].工程力学,2007,126(11):57-62.
    [6]任伟新.环境振动系统识别方法的比较分析[J].福州大学学报(自然科学版),2001,29(6):80-86.
    [7]刘宗政,陈恳,等.基于环境激励的桥梁模态参数识别[J].振动、测试与诊断,2010,30(3):300-304.

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