Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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An Experimental Study on Concrete-Filled Double-Skin Square Steel Tubular Beams under a Concentrated Load

중앙집중하중을 받는 콘크리트충전이중각형강관 보의 실험연구

  • Lee, Seung-Jo (Dept. of Architectural Engineering, Chosun College of Science & Technology)
  • 이승조 (조선이공대학교 건축과)
  • Received : 2021.11.24
  • Accepted : 2022.01.29
  • Published : 2022.02.28
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Abstract

This study aims to examine the effect of shape memory alloys (SMA) wire and the structural performance of rebar on concrete-filled double-skin square steel tubular (CFDST) beams through a bending test. In accordance with ASTM C348, the bending test specimens were fabricated and used to analyze its load-central deflection, failure modes, ultimate load ratio, bending-shear strength, and displacement ductility. Three main parameters were selected: the inside-to-outside breadth ratio, installing SMA and rebar in the inner-to-outer steel tube, and the location of installing SMA and rebar. This experiment revealed that the bending-shear strength gradually decreased as inside-to-outside breadth ratio increased. The calculated bending-shear strength of CFDST under a concentrated load was evaluated using revised equations and the results were compared.

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References

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