Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Seismic Behavior of Concrete Cylinders Reinforced by Outside Lateral Hoops

외측 횡 구속된 콘크리트 공시체의 내진 거동

  • Choi, Eunsoo (Hongik University, Dept. of Civil Eng.) ;
  • Kim, Byeong Hwa (Kyungnam University, Dept. of Civil Eng.) ;
  • Shin, Jae Kwan (Paichai University, Dept. of Civil and Environmental Eng.) ;
  • Lee, Do Hyung (Paichai University, Dept. of Civil, Environmental and Railroad Eng.)
  • 최은수 (홍익대학교 토목공학과) ;
  • 김병화 (경남대학교 토목공학과) ;
  • 신재관 (배재대학교 토목환경공학과) ;
  • 이도형 (배재대학교 건설환경철도공학과)
  • Received : 2013.08.20
  • Accepted : 2013.11.28
  • Published : 2014.01.02
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Abstract

This paper investigates experimentally the confinement effect on concrete. For this purpose, outside lateral reinforcement members made of stainless steel and GFRP were employed. Then, uniaxial compressive tests on concrete cylinders incorporating the members were conducted. A total of 30 cylinder specimens, specifically, 6 unconfined specimens, 12 specimens confined by stainless steel and 12 specimens confined by GFRP, were fabricated. The failure patterns of both unconfined and confined specimens were assessed and discussed based on experimental results. The results proved that the maximum stress and corresponding strains of the cylinders confined using the proposed hoops are increased in comparison with those of the unconfined. This supports that the current work can be used for retrofitting concrete members and structures and thus may lead to increased stability of such structures.

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References

  1. Youm KS, Lee YH, Park YJ, Lee HE. The behavior of concrete confined by carbon fiber sheet, Journal of the Korean Society of Civil Engineers. 2004;24(2A):259-265.
  2. Choi ES, An DJ. Assessment of confining effect of steel and GFRP jackets for concrete. Journal of Korean Society of Steel Construction. 2009;21(4):385-392.
  3. Hong WK, Kim HC, Yoon SH, Park SS. Strength characteristics of square concrete column confined by carbon composite tube. Journal of the Earthquake Engineering Society of Korea. 2003;7(1):1-7. https://doi.org/10.5000/EESK.2003.7.1.001
  4. Hwang JS. A study on the axial behavior of the concrete cylinders confined by carbon fiber sheets. Journal of Korea Institute for structural maintenance inspection. 2000;4(4):141-148.
  5. Lam L, Teng JG, Cheung CH, Xiao Y. FRP-confined concrete under axial cyclic compression. Cement & Concrete Composites. 2006;28: 949-958. https://doi.org/10.1016/j.cemconcomp.2006.07.007
  6. Mirmiran A, Shahawy M. Behavior of concrete columns confined by fiber composite. Journal of Structural Engineering, ASCE. 1997;123(5): 583-590. https://doi.org/10.1061/(ASCE)0733-9445(1997)123:5(583)
  7. Park R, Paulay R. Reinforced Concrete Structures, John Wiley & Sons, New Zealand. c1975. p.17-30.
  8. Saafi M, Toutanji HA, Li Z. Behavior of concrete columns confined with fiber reinforced polymer tubes. ACI Materials Journal. 1999; 96(4):500-509.
  9. Toutanji HA. Stress-strain characteristics of concrete columns externally confined with advanced fiber composite. ACI Materials Journal. 1999;96(3):397-404.
  10. Xiao Y, Wu H. Compressive behavior of concrete confined by carbon fiber composite jackets. Journal of Materials in Civil Engineering, ASCE. 2000;12(2):139-146. https://doi.org/10.1061/(ASCE)0899-1561(2000)12:2(139)