Journal of the Computational Structural Engineering Institute of Korea (한국전산구조공학회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Evaluation of Shear Capacity of Wide Beam Reinforced with Shear Plates with Openings

유공형 판으로 전단보강된 넓은 보의 전단거동 평가

  • Ko, Myung Joon (Department of Architectural Engineering, Kyung Hee University) ;
  • Lee, Young Hak (Department of Architectural Engineering, Kyung Hee University) ;
  • Kim, Min Sook (Department of Architectural Engineering, Kyung Hee University) ;
  • Park, Jong Yil (Department of Safety Engineering, Seoul National University of Science and Technology) ;
  • Kim, Heecheul (Department of Architectural Engineering, Kyung Hee University)
  • 고명준 (경희대학교 건축공학과) ;
  • 이영학 (경희대학교 건축공학과) ;
  • 김민숙 (경희대학교 건축공학과) ;
  • 박종일 (서울과학기술대학교 안전공학과) ;
  • 김희철 (경희대학교 건축공학과)
  • Received : 2015.10.12
  • Accepted : 2015.11.09
  • Published : 2015.12.29
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Abstract

In this paper, shear behavior of concrete wide beam reinforced with plates with openings was evaluated. For this evaluation, evelen specimens were manufactured. One specimen was non-shear reinforced, five specimens were reinforced with steel plates and the other five specimens were reinforced GFRP plates. Shear strengths measured through experiments were compared with ones calculated from the equation provided by ACI 318. Longitudinal spacing of shear reinforcement, transverse spacing of shear reinforcement and shear reinforcement material were considered as variables. Test results showed that the shear strength increased as the transverse and longitudinal spacing of shear reinforcement became narrow. Also, regardless of material type of shear reinforcement, the shear capacity was similar when the amount of shear reinforcement was the same.

본 논문은 유공형 판 형태로 전단보강한 넓은 보의 전단파괴 실험을 수행하여 넓은 보의 거동을 평가하였다. 무보강 시험체, 유공형 강판으로 전단보강된 시험체 5개와 유공형 GFRP로 보강된 시험체 5개 총 11개의 시험체를 전단파괴 실험을 통해 계측한 전단강도와 ACI-318 규준의 설계식을 통해 얻은 전단강도와 비교 평가하였다. 또한 넓은 보의 전단보강재의 재료, 종방향 전단보강재의 간격과 횡방향 전단보강재의 간격을 변수로 하여 넓은 보의 거동과 전단강도에 미치는 영향을 분석하였다. 이를 통해 종방향과 횡방향 전단보강재 간격이 줄어들수록 전단강도가 증가하고 사인장 균열이 적게 발생하는 것을 확인하였다. 또한 전단보강재의 재료인 강재와 GFRP에 상관없이 전단보강량이 동일하다면 넓은 보에서 비슷한 전단보강효과를 보이는 것을 확인하였다.

Keywords

References

  1. ACI Committee 318-14 (2014) Building Code Requirement for Reinforced Concrete and Commentary(ACI 318-14), American Concrete Institute, Farmington Hills.
  2. ACI Committee 440.1R-06 (2006) Guide for the Design and Construction of Concrete Reinforced with FRP Bars(ACI 440.1R-06), American Concrete Institute, Farmington Hills.
  3. Ahmed, E.A., Ahmed, K., El-Sayed, El-Salakawy, E., Benmokrane, B. (2010) Bend Strength of FRP Stirrups: Comparison and Evaluation of Testing Methods, J. Compos. Constr,. 14(1), pp.3-10. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000050
  4. Anderson, N.S., Ramirez, J.A. (1989) Detailing for Stirrup Reinforcement, ACI Struct. J., 86(5), pp.507-515.
  5. Choi, J.H., Kim, M.S., Kim, H.C., Lee, Y.H. (2012) Experimental Study on Shear Behaviors for Reinforced Concrete Beams Embedded with GFRP Plate with Openings, J. Korea Concr. Inst., 24(4), pp.407-414. https://doi.org/10.4334/JKCI.2012.24.4.407
  6. Grace, N.F., Soliman, A.K., Abdel-Sayed, G., Sale, K.R. (1998) Behavior and Ductility of Simple and Continuos FRP, J. Compos. Constr., 2(3), pp.186-194. https://doi.org/10.1061/(ASCE)1090-0268(1998)2:4(186)
  7. Kim, D-J., Kim, M.S., Choi, J.H., Kim, H.C., Lee, Y.H. (2014) Concrete Beams with Fiber-Reinforced Polymer Shear Reinforcement, ACI Struct. J., 111(4), pp.903-912.
  8. Lubell, A.S., Bentz, E.C., Collins, M.P. (2008) One-Way Shear in Wide Concrete Beams with Narrow Supports, ASCE Structural Congress, Crossing Borders, Reston, VA.
  9. Lubell, A.S., Bentz, E.C., Collins, M.P. (2009) Shear Reinforcement Spacing in Wide Member, ACI Struct. J., 106(2), pp.205-214.