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    题名: Wave Number-Based Technique for Detecting Slope Discontinuity in Simple Beams Using Moving Test Vehicle
    作者: Yau, J. D.;Yang, Judy P.;Yang, Y. B.
    关键词: Bridge;slope discontinuity;test vehicle;wavelength;wave number.
    日期: 2017-08
    上传时间: 2018-03-13 12:10:31 (UTC+8)
    出版者: World Scientific
    摘要: The wavelength characteristic is a useful clue for locating and assessing the severity of slope
    discontinuity in beams. In this study, the slope discontinuity of a beam is represented by an
    internal hinge restrained by elastic springs, and the wavelength of the beam is calculated
    indirectly from the vertical response of a test vehicle during its travel over the beam. The key
    parameters of the problem at hand are ¯rst unveiled using an approximate, closed-form solution
    for the response of the vehicle moving at low speeds over the bridge. Then a two-beam element
    model with slope discontinuity is formulated for the vehicle–bridge interaction (VBI) system
    for use in numerical simulation. In the examples, the wavenumber-based response of the
    test vehicle is used to identify the location and severity of the discontinuity in the beam.
    It is demonstrated that the wavelength-based technique presented herein by using the moving
    test vehicle as a moving sensor system o®ers a promising, alternative approach for damage
    detection in girder type bridges.
    關聯: International Journal of Structural Stability and Dynamics 17(6), 1750060 (21 pages)
    DOI: 10.1142/S0219455417500602
    显示于类别:[建築學系暨研究所] 期刊論文

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