Structural Engineering and Mechanics

  • 제77권2호
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  • Pages.273-291
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  • 2021
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Strength assessment of RC deep beams and corbels

  • Adrija, D. (Atkins) ;
  • Geevar, Indu (Department of Civil Engineering, Rajagiri School of Engineering and Technology) ;
  • Menon, Devdas (Department of Civil Engineering, IIT Madras) ;
  • Prasad, Meher (Department of Civil Engineering, IIT Madras)
  • 투고 : 2018.08.08
  • 심사 : 2020.10.23
  • 발행 : 2021.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

The strut-and-tie method (STM) has been widely accepted and used as a rational approach for the design of disturbed regions ('D' regions) of reinforced concrete members such as in corbels and deep beams, where traditional flexure theory does not apply. This paper evaluates the applicability of the equilibrium based STM in strength predictions of deep beams (with rectangular and circular cross-section) and corbels using the available experiments in literature. STM is found to give fairly good results for corbel and deep beams. The failure modes of these deep members are also studied, and an optimum amount of distribution reinforcement is suggested to eliminate the premature diagonal splitting failure. A comparison with existing empirical and semi empirical methods also show that STM gives more reliable results. The nonlinear finite element analysis (NLFEA) of 50 deep beams and 20 corbels could capture the complete behaviour of deep members including crack pattern, failure load and failure load accurately.

키워드

참고문헌

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