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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.70 No.4
- 발행연도
- 2019.1
- 수록면
- 499 - 511 (13page)
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초록· 키워드
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In this study, the axial compressive behavior of novel quadruple C-channel built-up cold-formed steel columns with different slenderness ratio was investigated, using the experimental and numerical analysis. The axial compressive capacity and failure modes of the columns were obtained and analyzed. The finite element models considering the geometry, material and contact nonlinearity were developed to simulate and analyze the structural behavior of the columns further. There was a great correlation between the numerical analyses and test results, which indicated that the finite element model was reasonable and accurate. Then influence of, slenderness ratio, flange width-to-thickness ratio and screw spacing on the mechanical behavior of the columns were studied, respectively. The tests and numerical results show that due to small slenderness ratio, the failure modes of the specimens are generally local buckling and distortional buckling. The axial compressive strength and stiffness of the quadruple C-channel built-up cold-formed steel columns decrease with the increase of maximum slenderness ratio. When the screw spacing is ranging from 150mm to 450mm, the axial compressive strength and stiffness of the quadruple C-channel built-up cold-formed steel columns change little. The axial compressive capacity of quadruple C-channel built-up cold-formed steel columns increases with the decrease of flange width-thickness ratio. A modified effective length factor is proposed to quantify the axial compressive capacity of the quadruple C-channel built-up cold-formed steel columns with U-shaped track in the ends.
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참고문헌 (29)
참고문헌 신청
M. Anbarasu / 2013 / Study on the effect of ties in the intermediate length Cold Formed Steel (CFS) columns / Structural Engineering and Mechanics, An Int＇l Journal 46(3):323~335
M. Anbarasu / 2014 / Influence of spacers on ultimate strength of intermediate length thin walled columns / Steel and Composite Structures, An International Journal 16(4):437~454
AISI / 2007 / North American specification for the design of cold-formed steel structural members
Aslani, F. / 1991 / An analytical criterion for buckling strength of built-up compression members / Eng. J. AISC 28(4):159~168
2005 / AS/NZS No. 4600, Cold-formed Steel Structure / Sydney
M. Anbarasu / 2014 / Influence of spacers on ultimate strength of intermediate length thin walled columns / Steel and Composite Structures, An International Journal 16(4):437~454
AISI / 2007 / North American specification for the design of cold-formed steel structural members
Aslani, F. / 1991 / An analytical criterion for buckling strength of built-up compression members / Eng. J. AISC 28(4):159~168
2005 / AS/NZS No. 4600, Cold-formed Steel Structure / Sydney
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