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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Shear Strength of Deep Beams
Author(s): K. N. Smith and A. S. Vantsiotis
Publication: Journal Proceedings
Appears on pages(s): 201-213
Keywords: beams (supports); compressive strength; cracking (fracturing); deep beams; failure; loads (forces); reinforced concrete; reinforcing steels; shear
strength; span-depth ratio; web reinforcement.
Abstract:Results of tests on 52 deep reinforced concrete beams under two equal symmetrically placed point loads are reported. The investigation’s objectives were to study the effect of vertical and horizontal web reinforcement and shear span-to-effective depth ratio on inclined cracking shear, ultimate shear strength, midspan deflection, tension reinforcement strain, and crack width. Test results indicated that web reinforcement produces no effect on formation of inclined cracks and seems to moderately affect ultimate shear strength. Addition of vertical web reinforcement (& = 0.18 to 1.25 percent) improves ultimate shear strength of deep beams. However, addition of horizontal web reinforcement (&, = 0.23 to 0.91 percent) had little or no influence on ultimate shear strength. Considerable increase in load-carrying capacity was observed with increasing concrete strength and decreasing shear span-to- effective depth ratio.
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