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 Beams Reinforced with GFRP and Steel Plates with Openings by Various Supporting Areas

지지부 조건에 따른 유공형 판으로 전단보강된 넓은 보의 전단성능 평가

  • Kim, Heecheul (Department of Architectural Engineering, Kyung Hee University) ;
  • Ko, Myung Joon (Department of Architectural Engineering, Kyung Hee University) ;
  • Kim, Min Sook (Department of Architectural Engineering, Kyung Hee University) ;
  • Lee, Young Hak (Department of Architectural Engineering, Kyung Hee University)
  • Received : 2016.04.18
  • Accepted : 2016.05.18
  • Published : 2016.06.30
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Abstract

In this paper, shear performance of concrete wide beams was evaluated through shear failure tests. The specimens were designed to have two continuous spans with a column at the center of the wide beam. Also the specimens were reinforced with plates with openings as shear reinforcements. For the test, total eight specimens, including five specimens were reinforced with steel plates and the other three specimens were reinforced with GFRP plates were manufactured. And the shear strengths obtained from the tests were compared with ones from the equation provided by ACI 318. Support width of wide beam, support section of wide beam and shear reinforcement material were considered as variables. The results showed that the support width was proportional to the increase of shear strength. Also, regardless of material type of shear reinforcement, the shear reinforcing effect was similar when the amount of shear reinforcement was the same.

본 논문은 유공형 판 형태로 전단 보강한 넓은 보의 중심에 기둥을 삽입하여 연속한 두 경간으로 설계하여 전단파괴 실험을 통해 넓은 보의 거동을 평가하였다. 유공형 강판으로 전단 보강된 시험체 5개와 유공형 GFRP판으로 보강된 시험체 3개 총 8개의 시험체를 전단파괴 실험을 통해 계측한 전단강도와 ACI-318 규준의 설계식을 통해 얻은 전단강도와 비교 평가하였다. 또한 넓은 보의 지지부 폭, 지지부의 형상과 전단보강재의 재료를 변수로 하여 넓은 보의 전단강도에 미치는 영향을 분석하였다. 이를 통해 지지부 폭이 증가할수록 전단강도가 증가하고 하중의 집중을 방지하는 것을 확인하였다. 또한 전단보강재의 재료인 강재와 GFRP에 상관없이 전단보강량이 동일하다면 넓은 보에서 비슷한 전단보강효과를 보이는 것을 확인하였다.

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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. Choi, J.W., Kim, M.S., Choi, B.S., Lee, Y.H. (2015) Evaluation of Shear Capacity According to Transverse Spacing of Wide Beam Shear Reinforced with Steel Plate with Openings, J. Comput. Struct. Eng. Inst. Korea, 28(3), pp. 259-266. https://doi.org/10.7734/COSEIK.2015.28.3.259
  4. 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.
  5. KS F 2405 (2009) Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, Annual Book Korean Standards.
  6. Korea Concrete Institute (2012) Concrete Design Code and Commentary(KCI-12), Kimoondang Publishing Company, Korea.
  7. Lubell, A.S., Bentz, E.C., Colins, M.P. (2008) One-Way Shear in Wide Concrete Beams with Narrow Supports, ASCE Structural Congress, Crossing Borders, Reston, VA.
  8. Shuraim, A.B. (2012) Transverse Stirrup Configurations in RC Wide Shallow Beams Supported on Narrow Columns, ASCE Structural Congress, 138(3), pp.416-424. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000408