Experimental Performance of Full-Depth Precast, Prestressed Concrete Overhang, Bridge Deck Panels
Publication: Journal of Bridge Engineering
Volume 15, Issue 5
Abstract
The performance of a new full-depth precast overhang panel system for concrete bridge decks is investigated experimentally. In contrast to conventional cast-in-place deck overhangs, the proposed full-depth precast overhang system has the potential to speed up construction, reduce costs, and improve safety. Load-deformation behavior up to factored design load limits is first investigated. The panel is then loaded near its edge to examine the collapse capacity and the associated failure modes—particularly the influence of panel-to-panel connections that exist, transverse to the bridge deck axis. Comparative tests are also conducted with a conventional cast-in-place overhang system. When compared to the conventional cast-in-place overhang behavior, the experimental results show that the precast full-depth overhang introduces different behavior modes, largely due to the influence of the partial depth panel-to-panel connection, which reduces the capacity by some 13%.
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Acknowledgments
This research was conducted under a contract from TxDOT to TTI (Project 0-46100) in collaboration with Dr. Tyler Ley of Oklahoma State University. Dr. Ley provided the initial design for the precast panels. This support is gratefully acknowledged. The research team also acknowledges the assistance of Ricardo Gonzalez, TxDOT project director, Graham Bettis, Ralph Browne, Loyl Bussell, Robert Cochran, Lewis Gamboa, John Holt, Michael Hyzack, Manuel Padron, and Alfredo Valles, all project advisors from TxDOT. The findings and opinions are those of the writers.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 15 • Issue 5 • September 2010
Pages: 503 - 510
Copyright
© 2010 ASCE.
History
Received: Apr 22, 2009
Accepted: Dec 14, 2009
Published online: Dec 16, 2009
Published in print: Sep 2010
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