Unified Shear Strength Model for Reinforced Concrete Beams—Part I: Development

This paper describes the development of a theoretical model to predict the shear strength of reinforced concrete beams with and without shear reinforcement. It was assumed that the shear strength of concrete beams can be determined from the failure of the compression zone of a beam cross section. The shear strength of the compression zone was evaluated, considering the interaction between the shear strength and normal stresses developed by the flexural moment. The failure mechanism of the compression zone changes from a tension failure to a compression failure as the shear span-to-depth ratio decreases. The transition of the failure mechanism was properly addressed by considering the geometry of the beam and using material failure criteria of concrete. The proposed strength model can describe the failure mechanisms of both slender beams and deep beams with and without shear reinforcement. This model is verified and further discussed in a companion paper.

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  • Authors:
    • Choi, Kyoung-Kyu
    • Park, Hong-Gun
    • Wight, James K
  • Publication Date: 2007-3


  • English

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  • Accession Number: 01046575
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 17 2007 9:18PM