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A simplified MCFT for shear capacity scaling of R/C beams

Kazemi, M. T ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1007/1-4020-4972-2_677
  3. Publisher: Kluwer Academic Publishers , 2006
  4. Abstract:
  5. It is well known that shear strength of beams without stirrups shows a strong size effect. At present, several formulas of size effect are used by some codes and suggested by various researchers. Most of those formulas are not in agree with fracture mechanics. Recently, a simple formula based on modified compression field theory, MCFT, was proposed (Collins and Kuchma [1], Lubell et al. [2]), which shows a size effect stronger than the size effect formula based on fracture mechanics, proposed by Bazant (e.g. Bazant and Kazemi [3], Bazant and Yu [4]). In this paper it is shown that with some refined considerations, formulas are resulted in agree with Fracture Mechanics concept. In the derived formulas, the effects of other parameters of the R/C beams are present, which are justified based on Walraven’s research on aggregate interlock [5], simplified MCFT, and subcommittee 445-F of ACI- ASCE [6] data bank
  6. Keywords:
  7. Shear strength ; Reinforce concrete ; Concrete beam ; Reinforced concrete beam ; Shear capacity
  8. Source: 16th European Conference of Fracture, 3 July 2006 through 7 July 2006 ; 2006 , Pages 1363-1364 ; 9781402049712 (ISBN)
  9. URL: https://link.springer.com/chapter/10.1007/1-4020-4972-2_677