Proceedings of the Computational Structural Engineering Institute Conference (한국전산구조공학회:학술대회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Analysis of the Axial Force-Bending Moment Interaction for a CFT Column Considering the Confining Effect and the Material Nonlinearity of Concrete

콘크리트의 구속효과와 재료비선형을 고려한 내부 구속 CFT 기둥의 축력-모멘트 상호작용 분석

  • 한택희 (고려대학교 공학기술연구소) ;
  • 염응준 (고려대학교 사회환경시스템공학과) ;
  • 윤기용 (충남대학교 토목공학과) ;
  • 이창수 (삼성물산(주) 건설부문 토목기술팀) ;
  • 강진욱 (삼성물산(주) 건설부문 토목기술팀) ;
  • 강영종 (고려대학교 사회환경시스템공학과)
  • Published : 2006.04.01
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Abstract

Concrete in a CFT(Concrete Filled Tube) column has enhanced strength and ductility because it is triaxially confined by a steel tube. But CFT columns are designed based on linear analyses by stress block method without the confining effect or the nonlinearity of the concrete. These make the significantly difference between the analysis results and the experimental results. Thus in this study, a nonlinear CFT column model was developed considering the confining effect on the concrete in a CFT column. This developed model was verified by experimental results from other researchers and compared with the results of various specifications. With the developed model, parametric studies were performed and the developed column model showed reasonable and accurate results.

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