A method for damage detection of a simply supported concrete bridge structure in time domain is presented using the interaction forces from the moving vehicles as excitation. The vehicular loads are modeled as a group of vehicle-bridge interaction forces moving at a prescribed velocity, and the bridge is modeled as an Euler-Bernoulli beam simply supported at both ends. A damage function is used to simulate the crack damage in the reinforced concrete beam. The vehicle-bridge interaction forces and the structural damage in the bridge deck are identified from the measured responses in sequence of iteration without prior knowledge of the moving loads. The effects of parameters of the vehicle-bridge system and measurement noise on the damage detection result are studied. Simulation results show that the method is effective and noise insensitive to damage detection in the concrete bridge structure under moving vehicular loads.
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February 2007
Technical Papers
Damage Detection in Simply Supported Concrete Bridge Structure Under Moving Vehicular Loads
X. Q. Zhu,
X. Q. Zhu
Research Fellow
School of Civil and Resource Engineering,
University of Western Australia
, Crawley, Australia
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S. S. Law
S. S. Law
Associate Professor
Hong Kong Polytechnic University
, Hunghom, Hong Kong, P.R.C.
Search for other works by this author on:
X. Q. Zhu
Research Fellow
School of Civil and Resource Engineering,
University of Western Australia
, Crawley, Australia
S. S. Law
Associate Professor
Hong Kong Polytechnic University
, Hunghom, Hong Kong, P.R.C.J. Vib. Acoust. Feb 2007, 129(1): 58-65 (8 pages)
Published Online: February 3, 2006
Article history
Received:
November 25, 2003
Revised:
February 3, 2006
Citation
Zhu, X. Q., and Law, S. S. (February 3, 2006). "Damage Detection in Simply Supported Concrete Bridge Structure Under Moving Vehicular Loads." ASME. J. Vib. Acoust. February 2007; 129(1): 58–65. https://doi.org/10.1115/1.2202150
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