Performance Evaluation of FRP Composite Deck Considering for Local Deformation Effects
Publication: Journal of Composites for Construction
Volume 13, Issue 4
Abstract
We examine here the replacement of a deteriorated concrete deck in the historic Hawthorne Street Bridge in Covington, Va. with a lightweight fiber-reinforced polymer (FRP) deck system (adhesively bonded pultruded tube and plate assembly) to increase the load rating of the bridge. To explore construction feasibility, serviceability, and durability of the proposed deck system, a two-bay section (9.45 by ) of the bridge has been constructed and tested under different probable loading scenarios. Experimental results show that the response of the deck is linear elastic with no evidence of deterioration at service load level (HS-20). From global behavior of the bridge superstructure (experimental data and finite- element analysis), degree of composite action, and load distribution factors are determined. The lowest failure load ( or ) is about 4.5 times the design load ( or ), including dynamic allowance at HS-20. The failure mode is consistent in all loading conditions and observed to be localized under the loading patch at the top plate and top flange of the tube. In addition to global performance, local deformation behavior is also investigated using finite-element simulation. Local analysis suggests that local effects are significant and should be incorporated in design criteria. Based on parametric studies on geometric (thickness of deck components) and material variables (the degree of orthotropy in pultruded tube), a proposed framework for the sizing and material selection of cellular FRP decks is presented for future development of design guidelines for composite deck structures.
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Acknowledgments
The writers gratefully acknowledge the financial support of the Federal Highway Administration’s (FHwA) Innovative Bridge Research and Construction Program, and the technical and financial support of the Virginia Transportation Research Council (Contract No. VTRC-MOA-03-010) and Virginia Department of Transportation (VDOT). The writers also thank the Strongwell Corporation, Bristol, Va. for supplying the FRP deck specimens for testing.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 13 • Issue 4 • August 2009
Pages: 332 - 338
Copyright
© 2009 ASCE.
History
Received: Jun 18, 2008
Accepted: Dec 13, 2008
Published online: Jul 15, 2009
Published in print: Aug 2009
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