Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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A Study on the Flexural Buckling Strength $F_{cr}$ of Inelastic Buckling for Compressive Members

압축재 비탄성좌굴의 휨좌굴강도 $F_{cr}$에 대한 고찰

  • 심현주 (중앙대학교 대학원 건축학과) ;
  • 김상섭 (한국기술교육대학교 건축공학부)
  • Received : 2012.07.09
  • Published : 2012.10.25
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Abstract

Many column curve formulations have appeared since the inception of L. Euler's classic theory in 1759. This paper investigates the flexural buckling strength($F_{cr}$) calculated using the Allowable Stress Design Specification and the Load and Resistance Factor Design Specification of the American Institute of Steel Construction. Herein, it is pointed out that the exponential function of column curve formulation(LRFD) is hard to use in practice. Therefore, in this study, the simple parabola function is proposed for the inelastic buckling strength of the steel column loaded in uniaxial compression that is consistent with many design codes. The expressions for inelastic buckling strength formulation defined previously by Allowable Stress Design is used here. To verify the proposed equation, a total of 118 individual test results of steel columns is surveyed. The mean of the ratio of column strength to proposed flexural buckling strength is 1.089 indicating that the proposed strength curves are in good agreement with the tests.

Keywords

Acknowledgement

Supported by : 한국기술교육대학교

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