Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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An Experimental Study on Buckling Behaviors of Cold-formed Carbon Steel Square Hollow Section Compressive Members under a Concentric Axial Load

중심압축력을 받는 냉간성형 탄소강 각형강관 압축재의 좌굴거동에 관한 실험적 연구

  • Kang, HyunSik (Division of Architectural Engineering, Gyeongsang National University) ;
  • Kim, TaeSoo (Division of Architecture & Architectural Engineering, Hanyang University ERICA)
  • 강현식 (경상국립대학교 건축공학부) ;
  • 김태수 (한양대학교 ERICA 건축학부)
  • Received : 2022.07.18
  • Accepted : 2022.09.22
  • Published : 2022.10.30
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Abstract

An experimental study was performed to investigate the structural behaviors of cold-formed carbon steel square hollow section columns to provide basic data of Korean design specifications for cold-formed steel structures. Specimens were fabricated with carbon steel square pipes for general structural purpose (SRT275). Main variables included the column length of 250mm, 1000mm and 2000mm, section dimension of 50×50mm and 75×75mm and section thickness of 2.0mm and 2.9mm. The initial imperfections of the specimen surface were measured and the material properties of these specimens satisfied the minimum requirement of Korean standards. All of the specimens or stubs with the column length of 250mm showed local buckling. The ultimate state of specimens with 1000mm and 2000mm column lengths were determined by local buckling or global buckling. Despite the large slenderness ratio, local buckling was observed in some specimens with a slender section element and a relatively large width-thickness ratio. Test results were compared with ultimate buckling strengths predicted by current design specifications of the Korean Design Standard (KDS), American Institute of Steel Construction (AISC), Eurocode 3 (EC3), and the American Iron and Steel Institute (AISI).

Keywords

Acknowledgement

이 연구는 2022년도 경상국립대학교 대학회계연구비지원에 의하여 연구되었음.

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