United States Department of Transportation
i
Fiber reinforced polymer bridge decks.
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2011-01-01
[PDF-74.09 MB]
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Alternative Title:Joint Transportation Research Program : Civil Engineering
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Edition:Final report.
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Abstract:The overarching goal of this study was to perform a comprehensive evaluation of various issues related to the strength and serviceability
of the FRP deck panels that are available in the industry. Specific objectives were to establish critical limit states to be considered in the
design of FRP deck panel, to provide performance specifications to designers, and to develop evaluation techniques for the deck panels in
service.
Two different FRP panels were studied during the research project: a sandwich panel and a pultruded panel. The sandwich panel was
initially selected for the rehabilitation case study bridge. However, for a variety of reasons outside of the scope of this study, both the
sandwich panel and the initial case study bridge were dropped from consideration. A new case study bridge was selected, and new
proposals from FRP deck manufacturers were solicited. At that time, the pultruded deck was selected. Analysis and experimental results
related to both FRP deck panels are included in this report, as information from both decks is relevant to the overarching goal of this
study.
In November 2009, Sugar Creek Bridge became the first bridge in Indiana to be rehabilitated with an FRP bridge deck. An extensive
study, including literature review, analysis, and load tests, suggest that the installed deck should perform well, with web buckling as the
ultimate failure mode at a factor of safety of 5. Deflection limits, generally an issue with FRP decks, are satisfied with the installed deck.
Meanwhile, some combination of acoustic emission methods, infrared thermography and a newly developed traveling truck deflection
method show promise for non-destructive evaluation of the deck in-situ and identification of damage such as delamination of the wearing
surface or web buckling. However, such methods have shown variability and could be prohibitively labor-intensive. Therefore, further
evaluation is needed if such methods are to be pursued.
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