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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 Prediction for Deep Beams With Web Reinforcement
Author(s): S. T. Mau and Thomas T. C. Hsu
Publication: Structural Journal
Appears on pages(s): 513-523
Keywords: beams (supports); deep beams; failure mechanisms; reinforced concrete; shear properties; shear strength; stress-strain relationships; structural analysis; web reinforcement; Structural Research
Abstract:A theoretical treatment of the shear behavior of deep beams is presented. The softened truss model theory, which has been successfully developed for low-rise shear walls and torsion, is extended to deep beams. The theory includes an effective transverse compressive stress acting on the web shear element and a softened concrete stress-strain relationship for the concrete behavior. Theoretical predictions of shear strength are compared to 64 test results. Examination of the governing equations helps identify three major factors that affect the shear strength. They are the shear span-to-height ratio, transverse reinforcement index, and the longitudinal reinforcement index. The theory predicts that transverse reinforcement is effective in increasing the shear strength of deep beams when the shear span-to-height ratio is greater than 0.5, but it is not effective when this ratio is less than 0.5.
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