Steel and Composite Structures

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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)
  • Received : 2014.06.30
  • Accepted : 2014.12.01
  • Published : 2015.06.25
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Abstract

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.

Keywords

References

  1. AISC (2005, 2010), Steel Construction Manual, American Institute of Steel Construction Inst.
  2. Bahrami, A., Wan Badaruzzamana, W.H. and Osman, S.A. (2011), "Nonlinear analysis of concrete-filled steel composite columns subjected to axial loading", Struct. Eng. Mech., Int. J., 39(3), 383-398. https://doi.org/10.12989/sem.2011.39.3.383
  3. Eurocode 4 (2004), Design of composite steel and concrete structures; EN 1994-1-1:2004, European Committee for Standardization.
  4. Fujimoto, T., Mukai, A., Nishiyama, I. and Sakino, K. (2004), "Behavior of eccentrically loaded concrete-filled steel tubular columns", J. Struct. Eng., 130(2), 203-212. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:2(203)
  5. Furlong, R.W. (1967), "Strength of steel-encased concrete beam columns", J. Struct. Div., 93, 113-124.
  6. Hajjar, J.F. and Gourley, B.C. (1996), "Representation of concrete-filled steel tube cross-section strength", J. Struct. Eng., 122(11), 1327-1336. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:11(1327)
  7. KBC (2005, 2009), Korean Building Code; Architectural Institute of Korea.
  8. Lee, S.H., Yang, I.S. and Choi, S.M. (2010), "Structural characteristics of welded built-up square CFT column-to-beam connections with external diaphragms", Steel Compos. Struct., Int. J., 10(3), 711-722.
  9. Lee, S.H., Kim, S.H., Kim, Y.H., Tao, Z. and Choi, S.M. (2011), "Water-pressure test and determination of welding-throat-depth for welded built-up square CFST column", J. Construct. Steel Res., 67(7), 1065-1077. https://doi.org/10.1016/j.jcsr.2011.02.012
  10. Park, R. and Paulay, T. (1933), Reinforced Concrete Structures, A Wiley - Interscience Publication; John Wiley & Sons.
  11. Schneider, S.P. (1998), "Axially loaded concrete-filled steel tubes", J. Struct. Eng., 124(10), 1125-1138. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:10(1125)
  12. Tomii, M. and Sakino, K. (1979), "Elasto-plastic behavior of concrete filled square steel tubular beam-columns", Transact. Architect. Inst. Japan, 280, pp. 111-120. https://doi.org/10.3130/aijsaxx.280.0_111
  13. Uy, B. and Bradford, M.A. (1996), "Elastic local buckling of steel plates in composite steel-concrete members", Eng. Struct., 18(3), 193-200. https://doi.org/10.1016/0141-0296(95)00143-3
  14. Xiamuxi, A. and Hasegawa, A. (2011), "Compression test of RCFT columns with thin-walled steel tube and high strength concrete", Steel Compos. Struct., Int. J., 11(5), 391-402. https://doi.org/10.12989/scs.2011.11.5.391

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