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http://dx.doi.org/10.11112/jksmi.2015.19.2.010

Parametric Study on design Variables of Rectangular Concrete Filled Tubular Columns with High-Strength Steel  

Choi, Hyun-Ki (경남대학교 소방방재공학과)
Bae, Baek-Il (한양대학교 산업과학연구소)
Choi, Yun-Cheol (청운대학교 건축설비소방학과)
Choi, Chang-Sik (한양대학교 건축공학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.19, no.2, 2015 , pp. 10-21 More about this Journal
Abstract
For the safe design of steel-concrete composite structure, usable yield strength of steels are limited in most of design standard. However, this limitation sometimes cause the uneconomical design for some kind of members such as slender columns which was affected by elastic buckling load. For the economical design for slender columns, parametric study of RCFT (Rectangular CFT) with high-strength steel is conducted, especially investigating the limitation of yield strength of high-strength steels. Using ABAQUS, finite element analysis program, the finite element model was constructed and calibrated with experimental study for RCFT with high strength steel which have yield strength up to 680MPa. Investigated design parameters are yield strength of steel, compressive strength of concrete, steel thickness and slenderness ratio. The effect of design parameters were compared with design standard, KBC-09. From the parametric study with 54 models and previous test specimens, RCFT can be safely design with higher yield strength of steels than currently limited by KBC for large range of slenderness ratio.
Keywords
Concrete filled tubular column; High strength steel; HSB800; Buckling; Slenderness ratio; Finite element analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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