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

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Development of Material Nonlinear Models for Concrete in Internally Confined Hollow Members Considering Confining Effect

내부 구속 중공 CFT 부재 콘크리트의 비선형 재료 모델 개발

  • 한택희 (고려대학교 공학기술연구소) ;
  • 한상윤 (고려대학교 사회환경시스템공학과) ;
  • 임남형 (충남대학교 토목공학과) ;
  • 강진욱 (삼성물산(주) 건설부문 토목기술팀) ;
  • 이명섭 (삼성물산(주) 건설부문 토목기술팀) ;
  • 강영종 (고려대학교 사회환경시스템공학과)
  • Published : 2006.04.01
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Abstract

When concrete is confined triaxially, its strength and toughness are enhanced. Hoop reinforcements or transverse reinforcements laterally confine concrete in the case of a RC member and an outer tube confines concrete in a CFT(Concrete Filled Tube) member. But biaxially confined concrete. such as concrete in a hollow R.C member, does not have much enhanced strength and toughness. In this study, a new-type member. which is a hollow CFT member named as an ICH(Internally Confined Hollow) CFT member, was developed to overcome the low ductility of the hollow member and the high cost of the CFT member. A material nonlinear model for the concrete in an CFT member or an ICH CFT member was developed and coded as a computer program based on Mander's concrete model. Analysis results were verified with experimental results and the developed analysis model showed reasonable and accurate results.

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