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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.32 No.4
- 발행연도
- 2019.1
- 수록면
- 521 - 536 (16page)
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The mechanical response of concrete-filled steel tubular (CFST) columns subjected to pure compression or uniaxial bending was studied in depth over the last decades. However, the available research results on CFST columns under biaxial bending are still scarce and the lack of experimental tests for this loading situation is evident. At the same time, the design provisions in Eurocode 4 Part 1.1 for verifying the stability of CFST columns under biaxial bending make use of a simplistic interaction curve, which needs to be revised. This paper presents the outcome of a numerical investigation on slender CFST columns subjected to biaxial bending. Eccentricities differing in minor and major axis, as well as varying end moment ratios are considered in the numerical model. A parametric study is conducted for assessing the current design guidelines of EN1994-1-1. Different aspect ratios, member slenderness, reinforcement ratios and load eccentricities are studied, covering both constant and variable bending moment distribution. The numerical results are subsequently compared to the design provisions of EN1994-1-1, showing that the current interaction equation results overly conservative. An alternative interaction equation is developed by the authors, leading to a more accurate yet conservative proposal.
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참고문헌 (39)
참고문헌 신청
ABAQUS / 2014 / Abaqus/Standard Version 6.14 User's Manual: Volumes I-III / Hibbit, Karlsson & Sorensen, Inc
Albero, V. / 2016 / Proposal of a new method in EN1994-1-2 for the fire design of concrete-filled steel tubular columns / Eng. Struct 128:237~255
Anderson, D. / 1992 / Calibration of composite columns: Eurocode 4 and British practice
Bonet, J. L. / 2004 / Analytical approach to failure surfaces in reinforced concrete sections subjected to axial loads and biaxial bending / J. Struct. Eng 130(12):2006~2015
Bresler, B. / 1960 / Design criteria for reinforced columns under axial load and biaxial bending / J. Am. Concrete Inst 32(5):481~490
Albero, V. / 2016 / Proposal of a new method in EN1994-1-2 for the fire design of concrete-filled steel tubular columns / Eng. Struct 128:237~255
Anderson, D. / 1992 / Calibration of composite columns: Eurocode 4 and British practice
Bonet, J. L. / 2004 / Analytical approach to failure surfaces in reinforced concrete sections subjected to axial loads and biaxial bending / J. Struct. Eng 130(12):2006~2015
Bresler, B. / 1960 / Design criteria for reinforced columns under axial load and biaxial bending / J. Am. Concrete Inst 32(5):481~490
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