Effect of Variables on Shear Strength of Concrete Beams
Publication: Journal of Materials in Civil Engineering
Volume 13, Issue 6
Abstract
Although considerable research has been conducted on the shear strength of reinforced concrete members without web reinforcement, the debate as to the effects of the major variables on the ultimate shear strength (vu) and cracking shear strengths (vc) has yet to be unequivocally established. Previous research on the subject has at times been unclear or often yielded contradictory results. The intent of this paper is to shed some light and clarify some of the misconceptions regarding the effects of the compressive strength (f′c), tensile reinforcement ratio (ρ), and shear span-to-depth ratio (a/d) on vu and vc of steel-reinforced concrete beams without web reinforcement. The analysis uses extensive shear strength data retrieved from existing literature for both normal strength and high strength concrete members. Results show that a/d significantly affects vu, whereas its effect on vc is much less significant. The effect of f′c on vc is not negligible and should be accounted for in strength analysis. The impact of ρ on vc is insignificant in the case of short beams (a/d < 2.5).
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 13 • Issue 6 • December 2001
Pages: 467 - 470
History
Received: Nov 11, 1996
Published online: Dec 1, 2001
Published in print: Dec 2001
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