A Study on the Flexural Behavior of Concrete Filled Steel Tube Girder in Parametrically Varied Filling and Composition

충전 및 합성조건 변화에 따른 콘크리트 충전강관 거더의 휨거동에 관한 연구

  • 진원종 (한국건설기술연구원 구조교량연구실) ;
  • 강재윤 (한국건설기술연구원 구조교량연구실) ;
  • 최은석 (한국건설기술연구원 구조교량연구실) ;
  • 이정우 (한국건설기술연구원 구조교량연구실)
  • Received : 2007.12.27
  • Accepted : 2008.12.28
  • Published : 2009.03.31


A new bridge system described in this paper uses concrete-filled steel tube (CFT) girders as a replacement for conventional girders. Experimental investigations were carried out to comprehend the flexural behavior of CFT girder. Specimens were manufactured considering several parameters such as the strength of filling material, the eventual presence and number of inner shear connectors to evaluate the bending bearing capacity of CFT girder. The experimental investigation consisted of designing and constructing a test specimen and loading it to collapse in bending to check the applicability of the system. Test results showed that concrete filled steel tube girders have good ductility and maintain their strength up to the end of the loading. The stiffening effect of the ㄱ-shaped perfobond rib is determined to contribute relatively to the increase of the bending bearing capacity.


Grant : 콘크리트 충전 강관거더를 이용한 강합성 교량구조 개발


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