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A study on the structural performance of new shape built-up square column under concentric axial load

  • Kim, Sun-Hee (Department of Architectural Engineering, University of Seoul) ;
  • Yom, Kyong-Soo (Harmony Engineering) ;
  • Choi, Sung-Mo (Department of Architectural Engineering, University of Seoul)
  • 투고 : 2014.06.30
  • 심사 : 2014.12.01
  • 발행 : 2015.06.25

초록

Recently, in recognition of their outstanding structural performance, the use of Concrete Filled Steel Tube (CFT) columns has been increased. New shape welded built-up square tube was developed by the authors for broader usability using thin steel plates which were bent to be L-shaped (Channel) and each unit members were welded to form square steel tube as an cost-efficient use of expensive steel. In addition, since the rib placed at the center of the tube width acts as an anchor; higher load capacity of buckling is achievable. In order to apply the new shape built-up square columns, the structural behavior and stress distribution with parameter width of thickness (b/t), with and without rib were predicted. The New shape welded built-up square tube effectively delayed the local buckling of the steel tube, which led to a greater strength and ductility than regular HSS.

키워드

참고문헌

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피인용 문헌

  1. Experimental and numerical investigations on axial strength of back-to-back built-up cold-formed steel angle columns vol.31, pp.6, 2019, https://doi.org/10.12989/scs.2019.31.6.601
  2. Effect of angle stiffeners on the flexural strength and stiffness of cold-formed steel beams vol.33, pp.2, 2019, https://doi.org/10.12989/scs.2019.33.2.225
  3. Flexural Strength of cold-formed steel built-up composite beams with rectangular compression flanges vol.34, pp.2, 2015, https://doi.org/10.12989/scs.2020.34.2.171
  4. Analytical behavior of built-up square concrete-filled steel tubular columns under combined preload and axial compression vol.38, pp.6, 2015, https://doi.org/10.12989/scs.2021.38.6.617