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Inelastic Analysis of Steel-Concrete Composite Column with Non-Compact Steel Section  

Oh, Myoung Ho (현대건설 기술연구소)
Jang, Tae Young (고려대 대학원)
Kim, Myeong Han (경운대 건축학부)
Kim, Dae Joong (삼성물산 건설부문 건축기술팀)
Kim, Sang Dae (고려대 건축과)
Publication Information
Journal of Korean Society of Steel Construction / v.17, no.1, 2005 , pp. 63-71 More about this Journal
Abstract
There were already several studies conducted on the steel-concrete (SC) composite column, which was developedcomplement the weaknesses and maintain the advantages of previous composite columns. The axial compressive capacity of the SC composite column was estimated by the tests in previous studies, but the experiments for the large-scale column could not be performed because of the limitation with the laboratory's capacity. In this study, the analytical study was performed using the general finite element analysis program to reflect the interaction of concrete and steel and the local buckling of steel flange composed of the non-compact section. The appropriateness of the analytical model was verified by the comparison between experimental and analytical results. The nonlinear behavior of full-scale SC composite column was analyzed using the verified analytical model. From these analytical studies, it was concluded that the width-to-thickness ratio of the steel cross-section of the SC composite column should not exceed 25:0. The section area of the link is best when it is over 0.025 dt, and the link distance is to be less than D/2 or 300mm.
Keywords
Composite Column; Finite Element Analysis; Initial Imperfection; Residual Stress;
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