Confined Effect of Ultra High Strength Reinforced Concrete Tied Columns

초고강도 철근콘크리트 띠철근 기둥의 구속효과

  • 한범석 (한양대학교 친환경건축연구센터) ;
  • 신성우 (한양대학교 건축학부, 친환경건축연구센터) ;
  • 김태수 (한양대학교 친환경건축연구센터)
  • Published : 2007.08.31

Abstract

As this study investigates the influence about type of transverse reinforcement, spacing of transverse reinforcement(s), volumetric ratios of transverse reinforcement(${\rho}s$) of ultra-high strength concrete columns. It try to offer to resonable basic data of the confined model for the ultra-high concrete of in reinforced concrete columns. Experimental tests with large scaled columns were conducted under concentric axial loads. The ultra-high strength concrete (100MPa) was used. From this test result, it evaluate influence of the strength enhancement and ductility enhancement, important variables about behavior of the confined concrete by confinement of ultra-high strength reinforced concrete.There are two ways to improve the confinement effect of high strength concrete columns through the increase of amounts and/or strength of transverse reinforcement.

Keywords

References

  1. 김경회, "中心軸力을 받는 高强度 콘크리트 기둥의 擧動", 漢陽大學校 大學院 建築工學科, 碩士學位論文, 1999. 12
  2. 申成雨, "나선補强된 高强度 콘크리트 기둥의 延性에 關한 硏究", 大韓建築學會 論文集 第5卷 第6號, 1989. 12, pp.327-334
  3. ACI, "Building Code Requirements for Reinforced Concrete (ACI 318-99)", ACI Committee 318, American Concrete Institute, 1999
  4. ACI-ASCE Committee 441, "High-Strength Concrete Columns : State of the Art", ACI Structural Journal, V.94, No.3, May-June 1997, pp. 323-335
  5. Han, B. S., Shin, S. W., Bahn, B. Y. "A Model of Confined Concrete in High-Stength Reinforced Concrete Tied Columns", Magazine of Concrete Research, Vol.55, No.3, 2003, pp. 203-214 https://doi.org/10.1680/macr.55.3.203.37576
  6. Daniel Cusson and Patrick Paultre, "High-Strength Concrete Columns Confined by Rectangular Ties", ASCE Journal of Structural Engineering, Vol.120, No.3, Mar, 1994, pp. 783-804 https://doi.org/10.1061/(ASCE)0733-9445(1994)120:3(783)
  7. Daniel Cusson and Patrick Paultre, "Stress-Strain Model for Confined High-Strength Concrete", ASCE Journal of Structural Engineering, Vol.121, No.3, Mar, 1995, pp. 468-477 https://doi.org/10.1061/(ASCE)0733-9445(1995)121:3(468)
  8. M. Saatcioglu and S. R. Razvi, "Strength and Ductility of Confined Concrete", ASCE Journal of Structural Engineering, Vol.118, No.6, June, 1992, pp 1590-1607 https://doi.org/10.1061/(ASCE)0733-9445(1992)118:6(1590)
  9. Salim Razvi, Murat Saatcioglu, "Confinement Model for High-Strength Concrete", ASCE, Journal of Structural Engineering, Vol. 125, No. 3, Mar, 1999, pp. 281-289 https://doi.org/10.1061/(ASCE)0733-9445(1999)125:3(281)