Abstract
The University of Vermont Structural Monitoring and Diagnostics Lab is collaborating with the Vermont Agency of Transportation to instrument and monitor traffic induced vibrations in bridge 58N on interstate 89 in the town of Richmond, VT. The bridge consists of an unorthodox concrete and steel deck supported on reinforced concrete piers. A critical portion of the deck is strategically instrumented with 24 strain sensors and 10 accelerometers. The main objective of the monitoring project is to use multi-scale vibration data to formulate a finite element model of the bridge deck that allows engineers to accurately assess the structural capacity of the deck under heavy traffic loads. Two methods are combined: (1) A direct method based on dynamic strain measurements at maximum stress locations in the deck and (2) An indirect method based on an updated sub-structured finite element model of the bridge deck updated based on frequencies and mode shapes identified from traffic induced acceleration measurements.
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Acknowledgements
The research project presented in this paper was funded by the Vermont Agency of Transportation (VAoT). Special thanks to Jason Tremblay of VAoT for his support and coordination efforts during the instrumentation process. Conclusions contained herein are those of the authors and do not necessarily represent the views of the Vermont Agency of Transportation.
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© 2013 The Society for Experimental Mechanics, Inc.
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May, G., Hernandez, E.M. (2013). Vibration Monitoring and Load Distribution Characterization of I-89 Bridge 58-N. In: Cunha, A. (eds) Topics in Dynamics of Bridges, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6519-5_12
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DOI: https://doi.org/10.1007/978-1-4614-6519-5_12
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