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Journal of the Korea Concrete Institute

J Korea Inst. Struct. Maint. Insp.
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  • Korea Citation Index (KCI)

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Title Analysis of Axial Compressive Behavior of Prefabricated CFT Columns with Parameters of Internal Ribs
Authors 송성휘(Seonghwi Song)
DOI https://doi.org/10.11112/jksmi.2025.29.5.141
Page pp.141-148
ISSN 2234-6937
Keywords 조립식 CFT기둥; 리브; 중심암축거동; 유한요소해석 Prefabricated CFT column; Rib; Axial Compressive behavior; Finite element analysis
Abstract This study analyses the axial compressive behavior of prefabricated concrete-filled steel tube (CFT) columns considering various parameters of internal ribs, and quantitatively evaluates their structural performance. To address the inherent weaknesses associated with welding in conventional CFT columns, a prefabricated CFT column that can be assembled without welding was proposed. Finite element analyses (FEA) were conducted using ABAQUS based on experimental data from previous studies to analyze the influence of key parameters such as rib angle, rib length, and rib height on the axial compressive behavior. The FEA results revealed that a rib angle of 45° provided the highest ultimate compressive strength and axial stiffness, while longer and lower ribs exhibited superior axial compressive performance. Furthermore, a parametric study was performed to determine the optimal rib aspect ratio that ensures adequate compressive capacity.