Wave Number-Based Technique for Detecting Slope Discontinuity in Simple Beams Using Moving Test Vehicle

doi:10.1142/S0219455417500602

淡江大學機構典藏 > 工學院 > 建築學系暨研究所 > 期刊論文 > Item 987654321/112935

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題名:	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.
關鍵詞:	Bridge;slope discontinuity;test vehicle;wavelength;wave number.
日期:	2017-08
上傳時間:	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
顯示於類別:	[建築學系暨研究所] 期刊論文

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