Reinforced Concrete T-Beams in Torsion and Bending

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Title: Reinforced Concrete T-Beams in Torsion and Bending

Author(s): P. D. Zararis and G. Gr. Penelis

Publication: Journal Proceedings

Volume: 83

Issue: 1

Appears on pages(s): 145-155

Keywords: beams (supports); bending; cracking (fracturing); flanges; reinforced concrete; strength; T-beams; torsion.

Date: 1/1/1986

Abstract:
An experimental investigation to study the effect of reinforced flanges on the torsional capacity of reinforced concrete T-beams is presented. Eighty-two T-beams with various flange widths and percentages of reinforcement were tested in combined torsion and bending to failure. Test results for cracking and ultimate moments show a great contribution of reinforced flanges to the torsional capacity of T-beams. The effect of reinforced flanges on the torsional capacity of T-beams has been found to be much greater than that considered by the existing codes. An effective flange width for both the ultimate and the cracking state is proposed. The testing program also served to help develop and verify an ultimate strength model.