Effect of Shear Stud Connections on Dynamic Response of an FRP Deck Bridge under Moving Loads
Publication: Journal of Bridge Engineering
Volume 18, Issue 7
Abstract
The main objective of this study was to evaluate the effect of shear stud connections on the dynamic response of the fiber-reinforced polymer (FRP) deck system under moving loads. A FRP deck bridge in Pennsylvania was studied based on a field test and finite-element (FE) analysis. In the field test, the strain of each steel girder at the midspan was measured at three positions: top, midheight, and bottom. In the FE analysis, the connection between the steel girders and the FRP deck was simulated as fully and partially composite, separately. Static performance under a simplified truck load was investigated based on these two FE models, and the FE analysis results were compared with the field test results to validate the FE models. The FE results of the fully composite model and the partially composite model provide a lower bound and an upper bound for the real response of the FRP deck system. Next, the dynamic behavior of the FRP deck system under moving loads was studied based on the two verified FE models. The static or dynamic response in the partially composite model of the FRP deck bridge was greater than the corresponding static or dynamic response in the fully composite model. Also, it was shown that the dynamic response in the partially composite model lags behind that in the fully composite model. Additionally, the FE analysis revealed that the number of shear stud connections affected the dynamic deflection, slip, and separation. Finally, the dynamic response of the FRP deck system was compared with that of the commonly used RC system.
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Acknowledgments
The financial support to the second author provided by the National Science Foundation––NSF CAREER program (CMS-0550899) is gratefully acknowledged. The authors would also like to thank the Center for Transportation Research (CTR) at the Univ. of Tennessee Knoxville for providing the financial support to the first author.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 18 • Issue 7 • July 2013
Pages: 644 - 652
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Nov 6, 2011
Accepted: Apr 18, 2012
Published online: Apr 20, 2012
Published in print: Jul 1, 2013
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