Strength Evaluation of Composite Deck Panel Systems in Bridges


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Title: Strength Evaluation of Composite Deck Panel Systems in Bridges

Author(s): F. E. Fagundo and J. M. Richardson

Publication: Special Publication

Volume: 88


Appears on pages(s): 181-198

Keywords: bridge decks; bridges (structures); composite con-struction (concrete to concrete); continuity (structural); cracking (fracturing); deflection; evaluation; field tests; load tests (structural); performance; precast concrete; strength

Date: 11/1/1985

Precast panel deck bridges have been in use for many years. Although some cracking is inherent in this structural system, recent concern has been expressed because of the greater degree of cracking exhibited on the surface of some decks compared to conventional cast-in-place bridge decks. Full scale structural testing was initiated to estimate the strength and evaluate the performance of the deck panel system. In this program two deck panel bridges, each with different panel support details, and a conventional cast-in-place deck bridge were tested. Results showed that the deck panel system did not act as a continuous slab over the girders as is usually assumed for design. The conventional cast-in-place deck bridge did develop continuity. The effect is to increase the maximum positive moments in the slab but not to a degree as to render the bridges unsafe.