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Title |
P-M Interaction Diagram of Slender Concrete-Filled Steel Tube Columns Subjected to Asymmetric Fire Using Finite Element Analysis
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Authors |
이정환(Jung-Hwan Lee) ; 김한수(Han-Soo Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2023.35.3.277 |
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Keywords |
콘크리트 충전 강관 기둥; 내화성능; 비대칭 화재; P-M 상관도; 아바쿠스 CFT column; fire resistance; asymmetric fire; P-M interaction diagram; Abaqus |
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Abstract |
In this study, the P-M interaction diagram of concrete-filled steel tube (CFT) columns subjected to asymmetric fires was obtained through sequentially coupled thermal-stress analysis using Abaqus, a general-purpose finite element analysis program. To validate the analysis model for CFT columns subjected to fire, the fire resistance times of 67 specimens obtained through numerical analysis were compared with experimental results from two institutes. The P-M interaction diagram was obtained by fixing the fire exposure time and varying the eccentricity and axial force, following a verified analysis procedure with modified sequences.
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