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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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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: Effect of Development and Geometry on Behavior of Concrete Deep Beams
Author(s): Nazanin Rezaei, Gary Klein, and David B. Garber
Publication: Structural Journal
Appears on pages(s): 171-181
Keywords: deep beam; development; failure mechanism; finite element; strut-and-tie
Abstract:The effect of development type and length and beam geometry on the behavior of discontinuity regions in concrete deep beams was investigated through experimental testing and numerical study. Observations of cracking patterns and measurements of load and displacement at midspan of four large-scale concrete deep beams tested under a three-point load setup were used to calibrate numerical models. Thirty-five specimens were then modeled in a nonlinear finite element software to evaluate the strength of deep beams with different development lengths, development types, strut angles, and beam geometries. Development length and type of development was found to impact the presence of tensile stress in the support nodes. A rectangular beam geometry was found to cause diagonal tension stresses in the struts, not present in truss-like specimens. The tensile stresses from reinforcement development and diagonal tension were found to not be additive in these rectangular beams.
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