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자료유형
학술저널
저자정보
Shih, H.W. (School of Urban Development, Faculty of Built Environment and Engineering, Queensland University of Technology) Thambiratnam, D.P. (School of Urban Development, Faculty of Built Environment and Engineering, Queensland University of Technology) Chan, T.H.T. (School of Urban Development, Faculty of Built Environment and Engineering, Queensland University of Technology)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제39권 제2호
발행연도
2011.1
수록면
187 - 206 (20page)

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This paper uses dynamic computer simulation techniques to develop and apply a multi-criteria procedure using non-destructive vibration-based parameters for damage assessment in truss bridges. In addition to changes in natural frequencies, this procedure incorporates two parameters, namely the modal flexibility and the modal strain energy. Using the numerically simulated modal data obtained through finite element analysis of the healthy and damaged bridge models, algorithms based on modal flexibility and modal strain energy changes before and after damage are obtained and used as the indices for the assessment of structural health state. The application of the two proposed parameters to truss-type structures is limited in the literature. The proposed multi-criteria based damage assessment procedure is therefore developed and applied to truss bridges. The application of the approach is demonstrated through numerical simulation studies of a single-span simply supported truss bridge with eight damage scenarios corresponding to different types of deck and truss damage. Results show that the proposed multi-criteria method is effective in damage assessment in this type of bridge superstructure.

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