Identification of Nottingham Wilford Bridge modal parameters using wavelet transforms

Michele Meo, G Zumpano, X Meng, G Roberts, A Dodson

Research output: Chapter in Book/Report/Conference proceedingChapter

4 Citations (Scopus)

Abstract

Studies have been conducted on the identification of modal parameters including natural frequencies, damping coefficients and mode shapes of the Nottingham Wilford Bridge using ambient excitation. An approach to estimate modal parameters, from only output data (in the time domain) using the wavelet transform, is presented. Displacements responses of this structural system are used in the wavelet transform to identify its dynamic characteristics. To measure real-time displacement of the bridge a global positioning system (GPS) sensor network was designed and installed on the bridge. The modal properties were extracted using a two-step methodology. In the first step, the random decrement method was used to transform random signals in free vibration responses. Finally, the Eigensystem Realization Algorithm and a Wavelets based technique were used to extract natural frequencies and to determine the mode shapes of the structure.
Original languageEnglish
Title of host publicationSmart Structures and Materials 2004: Modeling, Signal Processing, and Control
PublisherSPIE
Pages561-570
Number of pages10
Volume5383
DOIs
Publication statusPublished - 2004

Publication series

NameProceedings of the SPIE
PublisherSPIE

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    Meo, M., Zumpano, G., Meng, X., Roberts, G., & Dodson, A. (2004). Identification of Nottingham Wilford Bridge modal parameters using wavelet transforms. In Smart Structures and Materials 2004: Modeling, Signal Processing, and Control (Vol. 5383, pp. 561-570). (Proceedings of the SPIE). SPIE. https://doi.org/10.1117/12.541501