Journal of The Korean Digital Architecture Interior Association (한국디지털건축인테리어학회논문집)

Korean Digital Architecture-Interior Association (한국디지털건축·인테리어학회)
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Strength Evaluation of Rectangular CFT Stub Columns varing with Concrete Strength and Width-to-Thickness Ratio of Steel Tubes

콘크리트 강도 및 강관 폭두께비에 따른 각형 CFT 단주의 내력평가

  • Received : 2011.04.26
  • Accepted : 2011.05.16
  • Published : 2011.06.25
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Abstract

Concrete-filled steel tube(CFT) columns have become popular for building construction due to not only composite effect of steel tube and infilled concrete, but also more economical. The purpose of this paper is to propose the applicable boundary formula of width-to-thickness ratio for rectangular steel tube as using CFT column. A parametric study was performed taking width-to-thickness ratio of rectangular steel tube and compressive strength of concrete as the main parameter. The strength of concrete are selected to 30, 60, 90MPa. The non-linear analysis was adopted in order to take into account the effect of concrete strength. Finally, from the test and analysis results, the effect of increasing strength according to concrete strength and width-to-thickness of steel tube and plastic behavior of specimens were verified distinctly.

Keywords

References

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