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Experimental Performance of Full-Depth Precast, Prestressed Concrete Overhang, Bridge Deck Panels |
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| Authors: | Thomas J Mander Matthew D Henley Reece M Scott Monique Hite Head John B Mander David Trejo |
| Affiliation: | 1Graduate Assistant Researcher, Zachry Dept. Civil Engineering, Texas A&M Univ., College Station, TX 77843-3136. 2Captain, U.S. Air Force; formerly, Graduate Student, Zachry Dept. Civil Engineering, Texas A&M Univ., College Station, TX. 77843-3136. 3Assistant Professor, Zachry Dept. Civil Engineering, Texas A&M Univ., College Station, TX 77843-3136 (corresponding author). 4Inaugural Zachry Professor I, Zachry Dept. Civil Engineering, Texas A&M Univ., College Station, TX 77843-3136. 5Zachry Career Development Professor I and Division Head, Constructed Facilities, Texas Transportation Institute, College Station, TX 77843-3136. |
| 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%. |
| Keywords: | Bridges concrete Bridge decks Prestressed concrete Panels Load factors |