Dynamic Response of Three Fiber Reinforced Polymer Composite Bridges
Publication: Journal of Bridge Engineering
Volume 10, Issue 6
Abstract
Fiber reinforced polymer (FRP) composite bridge decks are gaining the attention of bridge owners because of their light self-weight, corrosion resistance, and ease of installation. Constructed Facilities Center at West Virginia University working with the Federal Highway Administration and West Virginia Department of Transportation has developed three different FRP decking systems and installed several FRP deck bridges in West Virginia. These FRP bridge decks are lighter in weight than comparable concrete systems and therefore their dynamic performance is equally as important as their static performance. In the current study dynamic tests were performed on three FRP deck bridges, namely, Katy Truss Bridge, Market Street Bridge, and Laurel Lick Bridge, in the state of West Virginia. The dynamic response parameters evaluated for the three bridges include dynamic load allowance (DLA) factors, natural frequencies, damping ratios, and deck accelerations caused by moving test trucks. It was found that the DLA factors for Katy Truss and Market Street bridges are within the AASHTO 1998 LRFD specifications, but the deck accelerations were found to be high for both these bridges. DLA factors for Laurel Lick bridge were found to be as high as 93% against the typical design value of 33%; however absolute deck stress induced by vehicle loads is less than 10% of the deck ultimate stress.
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Acknowledgments
The writers wish to acknowledge the financial support provided by the West Virginia Department of Transportation–Division of Highways and Federal Highway Administration. The writers also wish to thank Krit Laosiriphong and Vimala Shekar of CFC for their efforts in planning and instrumentation of the bridges. The writers also appreciate the efforts of all the WVDOT-DOH personnel involved in planning of the field tests, providing traffic control, and trucks for testing.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 10 • Issue 6 • November 2005
Pages: 722 - 730
Copyright
© 2005 ASCE.
History
Received: Oct 28, 2003
Accepted: Jan 8, 2004
Published online: Nov 1, 2005
Published in print: Nov 2005
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