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Nonlinear Analysis of Internally Confined Hollow CFT Columns  

Han, Taek-Hee (한국해양연구원 연안개발.에너지연구부)
Won, Deok-Hee (고려대학교 건축사회환경공학과)
Kang, Young-Jong (고려대학교 건축사회환경공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.23, no.4, 2011 , pp. 439-454 More about this Journal
Abstract
A nonlinear analysis model for internally confined hollow concrete-filled tube (ICH CFT) columns was suggested and was verified by the test results obtained by the previous researchers. The suggested model considered the confining effect and nonlinearity of concrete. The verified results showed that the suggested model was reasonable and reliable for predicting the behavior of an ICH CFT column. Additionally, a simple parametric study was carried out. The strength of concrete, the hollow ratio of a column, and the thickness of an inner tube were selected as parameters affecting the behavior of an ICH CFT column. The analysis results showed that the concrete strength and the thickness of the inner tube affect the axial strength and moment capacity of the column while the hollow ratio affects only its axial strength.
Keywords
composite column; confining effect; ductility; concrete; nonlinear;
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Times Cited By KSCI : 5  (Citation Analysis)
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