Load Capacity of Concrete Bridge Decks

by David B. Beal, (M.ASCE), Assoc. Civ. Engr.; Engrg. Research and Development Bureau, New York State Dept. of Transportation, Albany, N.Y.,

Serial Information: Journal of the Structural Division, 1982, Vol. 108, Issue 4, Pg. 814-832

Document Type: Journal Paper


The behavior of two reduced-scale concrete bridge decks subjected to simulated wheel loads was evaluated in a series of tests. One slab was reinforced in accordance with AASHTO requirements; the other had three areas with varying amounts of isotropic reinforcement. Results show that with either reinforcement pattern, service load bending moments are from 40 to 65 percent of those predicted by flexural theory. Failures were by punching shear rather than flexure and occurred at loads at least six times larger than design.

Subject Headings: Load bearing capacity | Vehicle loads | Concrete bridges | Service loads | Load tests | Bridge decks | Bridge tests | Punching shear

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