대한건축학회논문집:구조계 (Journal of the Architectural Institute of Korea Structure & Construction)

  • 제29권2호
  • /
  • Pages.29-37
  • /
  • 2013
  • /
  • 1226-9107(pISSN)
  • /
  • 2384-1788(eISSN)
대한건축학회 (Architectural Institute of Korea)
권호 표지
DOI QR코드

DOI QR Code

연속후프로 보강된 철근콘크리트 기둥의 내진실험

Seismic Tests on Reinforced Concrete Columns Confined with Continuous Hoops

  • 발행 : 2013.02.28
⟨ 이전 논문 다음 논문 ⟩

초록

For reduction in steel weight and duration of reinforcement work, continuous hoops can be used as the lateral reinforcement of reinforced concrete columns. In the present study, seismic tests were carried out in order to verify the earthquake resistance of the columns reinforced with continuous hoops. According to KCI 2012, the column specimens were designed with high strength SD600 and SD500 steel bars for the longitudinal and lateral reinforcements, respectively. The test results showed that the load-carrying capacity and deformation capacity of the column specimens confined with various details of continuous hoops were comparable to those of the column confined with conventional tie hoops and crossties with seismic hooks. In addition, a close investigation on the longitudinal bar buckling occurring at the plastic hinges of the columns showed that sway and/or non-sway buckling modes of longitudinal bars can be significantly influenced by the spacing and diameter of lateral reinforcement. In the present study, the lateral reinforcement spacing restraining premature longitudinal bar buckling was proposed and the proposed method was compared with the test results. Based on the proposed method, the requirements on the lateral reinforcement spacing of columns specified in KCI 2012 and ACI 318-11 were examined.

키워드

참고문헌

  1. 대한건축학회, "건축구조기준(KBC 2009) 및 해설", 서울, 2010, p.1039
  2. 이재훈, 박홍근, "개정 콘크리트 구조기준 - 철근의 설계기준 항복강도", 콘크리트학회지, vol.24 No.1, pp.29-32, 2012
  3. 한국콘크리트학회, 콘크리트구조설계기준, KCI 2012, 서울, 2012, p.523
  4. 황현종, 엄태성, 박홍근, 김형섭, 이창남, "고강도 앵글을 적용한 선조립 합성기둥의 압축 실험", 한국강구조학회논문집, 24(4), 2012, pp.361-369
  5. ACI Committee 318, Building Code Requirements for Structural Concrete (ACI 318-11) and Commentary, American Concrete Institute, Farmington Hills, MI, 2011.
  6. ACI Committee 374, Acceptance Criteria for Moment Frames Based on Structural Testing and Commentary, ACI 374.1-05, American Concrete Institute, 2005
  7. Fascia, F., Chiara, D. M., Piasanti, G., and Iovino, R. Continuous Stirrup with Vertical Arms and Variable Pitch for Reinforced Concrete Structures, Schnell S.p.A. 2010, p.74
  8. Mander, J. B., Priestley M. J. N., and Park, R. Theoretical Stress-Strain Model for Confined Concrete, Journal of Structural Engineering, ASCE, 114(8), 1988, pp.1804-1826 https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804)
  9. Park. R, "State-of-the-Art Report on Ductility Evaluation from Laboratory and Analytical Testing", Proceedings of 9th World Conference on Earthquake Engineering, Tokyo-Kyoto, Japan, vol.8, pp.605-616, 1988
  10. Riva, P., Cyclic Response of Column-to-Foundation Joints with Continuous Stirrups "SPIREX", Schnell Technical Report, 2009, p. 47