해양환경안전학회지 (Journal of the Korean Society of Marine Environment & Safety)

  • 제19권4호
  • /
  • Pages.403-409
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  • 2013
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  • 1229-3431(pISSN)
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  • 2287-3341(eISSN)
해양환경안전학회 (The Korean Society of Marine Environment and safety)
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FRP Bar 보강 콘크리트 보의 전단거동

Shear Behavior of Concrete Beams Reinforced with FRP Bar

  • 최익창 (목포해양대학교 해양.플랜트건설공학과) ;
  • 정대진 (목포해양대학교 대학원)
  • Choi, Ik-Chang (Department of Ocean Plant Construction Engineering, Mokpo National Maritime University) ;
  • Jung, Dae-Jin (Graduate School of Mokpo National Maritime University)
  • 투고 : 2013.03.19
  • 심사 : 2013.08.28
  • 발행 : 2013.08.31
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초록

철근 및 FRP Bar를 보강재로 사용한 콘크리트 보의 전단 거동을 실험적으로 평가하였다. 실험 변수는 특성이 다른 보강근을 휨 및 전단 보강한 것과 전단보강근비이다. 콘크리트 보의 전단강도 산정에 일반적으로 널리 이용되는 수정트러스 이론의 타당성을 실험 결과의 분석을 통하여 평가하였다. CFRP 및 GFRP를 휨 및 전단 보강한 콘크리트 보에 그대로 적용하는 것은 적절하지 않음을 알 수 있었다. 실험결과는 FRP Bar를 보강근으로 사용한 콘크리트 보의 전단 문제에 수정트러스 이론을 그대로 적용하는 것은 타당하지 않다는 것을 알 수 있었다.

Shear behavior of concrete beams reinforced with steel and/or FRP bar is studied through experimental tests. Experimental parameters includes the mechanical properties of reinforcements in shear and bending, and the ratio of shear reinforcement. The validity of the modified truss analogy, that has been widely accepted as a basis for the practical shear design of concrete beams, has been examined thoroughly by analyzing experimental results. The experimental results indicate that the modified truss analogy cannot be directly adopted to the shear problem of concrete beams reinforced with FRP bar.

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참고문헌

  1. Choi, I. C., J. H. Yeon and J. Y. Ko(2004), Estimation of shear Carrying Capacity on Concrete Beams, Reinforced with FRP Rods, The Korean Society of Ocean Engineers, Vol. 18, No. 1, pp. 63-68.
  2. Choi, K. K., S. M. Kang and W. C. Sim(2011), Shear Strength Model for FRP Shear-Reinforced Concrete Beams, Journal of the Korea Concrete Institute, Vol. 23, No. 2, pp. 185-193. https://doi.org/10.4334/JKCI.2011.23.2.185
  3. KCI(2008), Korea Concrete Institute, "Design and Construction Guide of Concrete Structures with Reinforcement of FRP" Proceedings of the Korea Concrete Institute, Vol. 20, No. 1, p. 67.
  4. Lee, J. H., H. A. Son and S. J. Shin(2010), Failure Behavior of FRP RC Beam without Shear Reinforcements, Journal of the Korea Concrete Institute, Vol. 22, No. 2, pp. 199-208. https://doi.org/10.4334/JKCI.2010.22.2.199
  5. Lee, J. H. and S. J. Shin(2010), Shear Strength Prediction of FRP RC Beam without Shear Reinforcements, Journal of the Korea Concrete Institute, Vol. 22, No. 3, pp. 313-324. https://doi.org/10.4334/JKCI.2010.22.3.313
  6. Niwa, J., I. C. Choi, T. Mishima and A. Suzuki, (1996), Evaluation of Shear Carrying Capacity of Concrete Beams Reinforced with FRP Rods by the Lattice Model, Journal of JSCE, Vol. 31, pp. 105-114.
  7. Rubinsky, I. A. and A. Rubinsky(1959), "A Prelimiary Investigation of the Use of Fiber Glass for Prestressed Concrete", Magazine of Concrete Research, Sept, pp. 71-78.
  8. Sim, J. S., C. W. Park, D. Y. Moon and J. W. Sim(2005a), Prediction of the Shear Strength of FRP Strengthened RC Beams (II), Journal of the Korea Concrete Institute, Vol. 17, No. 3, pp. 353-359. https://doi.org/10.4334/JKCI.2005.17.3.353
  9. Sim, J. S., H. S. Oh, D. Y. Moon and K. D. Park(2005b), Prediction of the Shear Strength of FRP Strengthened RC Beams (I), Journal of the Korea Concrete Institute, Vol. 17, No. 3, pp. 343-351. https://doi.org/10.4334/JKCI.2005.17.3.343

피인용 문헌

  1. Evaluation of Anti-Corrosion Performance of FRP Hybrid Bar with Notch in GGBFS Concrete vol.20, pp.4, 2016, https://doi.org/10.11112/jksmi.2016.20.4.051
  2. 콘크리트구조물 중의 철근 부식 저감을 위한 FRP Hybrid Bar의 적용성 연구 vol.20, pp.5, 2013, https://doi.org/10.5762/kais.2019.20.5.559