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H. Xu¹, X.Y. Chen², Z.L. Wang¹, K. Shi¹ and Y.B. Yang¹

¹School of Civil Engineering, Chongqing University Chongqing, P.R. China
²College of Civil Engineering, Hunan University Changsha, P.R. China

doi:10.4203/ccc.6.2.8

H. Xu, X.Y. Chen, Z.L. Wang, K. Shi, Y.B. Yang, "Identification of Bridge Mode Shapes from a Two-Axle Test Vehicle by Wavelet Transform", in P. Ivanyi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Seventeenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 6, Paper 2.8, 2023, doi:10.4203/ccc.6.2.8

Keywords: bridge, vehicle, mode shape, wavelet transform, contact, vehicle scanning method.

Abstract

Wavelet transform (WT) is theoretically investigated to recover bridge mode shapes from a passing two-axle test vehicle by using the correlation between the front and rear contact points. In this study, closed-form solutions for the dynamic responses of the bridge and front and rear contact points are derived. To overcome the masking effect by vehicle’s self frequencies on bridge frequencies in the vehicle’s spectra, the procedure for calculating contact responses of a two-axle test vehicle considering the suspension effect was derived. Next, the procedure for constructing bridge mode shapes using the WT is proposed and theoretically investigated. The efficacy of the proposed procedure is validated by numerical studies.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 6 PROCEEDINGS OF THE SEVENTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: P. Ivanyi, J. Kruis and B.H.V. Topping Paper 2.8 Identification of Bridge Mode Shapes from a Two-Axle Test Vehicle by Wavelet Transform H. Xu¹, X.Y. Chen², Z.L. Wang¹, K. Shi¹ and Y.B. Yang¹ ¹School of Civil Engineering, Chongqing University Chongqing, P.R. China ²College of Civil Engineering, Hunan University Changsha, P.R. China doi:10.4203/ccc.6.2.8 Full Bibliographic Reference for this paper H. Xu, X.Y. Chen, Z.L. Wang, K. Shi, Y.B. Yang, "Identification of Bridge Mode Shapes from a Two-Axle Test Vehicle by Wavelet Transform", in P. Ivanyi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Seventeenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 6, Paper 2.8, 2023, doi:10.4203/ccc.6.2.8 Keywords: bridge, vehicle, mode shape, wavelet transform, contact, vehicle scanning method. Abstract Wavelet transform (WT) is theoretically investigated to recover bridge mode shapes from a passing two-axle test vehicle by using the correlation between the front and rear contact points. In this study, closed-form solutions for the dynamic responses of the bridge and front and rear contact points are derived. To overcome the masking effect by vehicle’s self frequencies on bridge frequencies in the vehicle’s spectra, the procedure for calculating contact responses of a two-axle test vehicle considering the suspension effect was derived. Next, the procedure for constructing bridge mode shapes using the WT is proposed and theoretically investigated. The efficacy of the proposed procedure is validated by numerical studies. download the full-text of this paper (PDF, 9 pages, 357 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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