Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
권호 표지

An Experimental Study on the Axial Stiffness of the Concrete Filled Circular Steel Tube Columns

콘크리트충전 원형강관 기둥의 축강성에 관한 실험연구

  • 김정회 (동국대학교 토목환경공학과) ;
  • 송형수 (동국대학교 토목환경공학과) ;
  • 박진수 (동국대학교 토목환경공학과) ;
  • 민창식 (동국대학교 토목환경공학과)
  • Published : 2006.05.11
Download PDF
⟨ Previous Next ⟩

Abstract

AISC-LRFD, ACI 318 and Korean design specifications for concrete filled circular steel tube columns do not consider the increasing of axial stiffness such as the elastic modulus and the yield strength due to the confinement effect. AISC-LRFD and ACI 318, however, shows different basic philosophy and equations for computing the elastic modulus and the strength of CFT columns. Through this experimental study, 9 circular CFT column specimens were made by varying thickness steel tube and concrete strength, the axial stiffness were compared. The comparison between the design specifications and the test results shows different values on the elastic modulus and yield strength of the CFT columns. Even though, yield strength of the CFT columns are very similar between AISC-LRFD and Korean design specifications.

Keywords