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Behavior and design of perforated steel storage rack columns under axial compression

  • El Kadi, Bassel (Department of Civil Engineering, Faculty of Engineering, Fatih University, Buyukcekmece Campus) ;
  • Kiymaz, G. (Department of Civil Engineering, Faculty of Engineering, Antalya International University)
  • Received : 2014.08.08
  • Accepted : 2014.11.17
  • Published : 2015.05.25

Abstract

The present study is focused on the behavior and design of perforated steel storage rack columns under axial compression. These columns may exhibit different types of behavior and levels of strength owing to their peculiar features including their complex cross-section forms and perforations along the member. In the present codes of practice, the design of these columns is carried out using analytical formulas which are supported by experimental tests described in the relevant code document. Recently proposed analytical approaches are used to estimate the load carrying capacity of axially compressed steel storage rack columns. Experimental and numerical studies were carried out to verify the proposed approaches. The experimental study includes compression tests done on members of different lengths, but of the same cross-section. A comparison between the analytical and the experimental results is presented to identify the accuracy of the recently proposed analytical approaches. The proposed approach includes modifications in the Direct Strength Method to include the effects of perforations (the so-called reduced thickness approach). CUFSM and CUTWP software programs are used to calculate the elastic buckling parameters of the studied members. Results from experimental and analytical studies compared very well. This indicates the validity of the recently proposed approaches for predicting the ultimate strength of steel storage rack columns.

Keywords

References

  1. AISI (2004), Appendix 1: Design of Cold-Formed Steel Structural Members Using the Direct Strength Method; American Iron and Steel Institute, Washington, D.C., USA.
  2. ANSI MH16.1 (2010), Specification for the Design,Testing and Utilization of Industrial Steel Storage Racks; Rack Manufacturers Institute, NC, USA.
  3. Casafont, M., Pastor, M.M., Roure, F. and Pekoz, T. (2011), "An experimental investigation of distortional buckling of steel storage rack columns", Thin-Wall. Struct., 49(8), 933-946. https://doi.org/10.1016/j.tws.2011.03.016
  4. Casafont, M., Pastor, M., Roure, F., Bonada, J. and Pekoz, T. (2013), "Design of steel storage rack columns via the direct strength method", J. Struct. Eng., 139(5), 669-679. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000620
  5. EN15512 (2009), Steel static stroage systems: Adjustable pallet racking systems; European Standard, European Committee for Standardization, Brussels, Belgium.
  6. Freitas, A.M.S., Freitas, M.S.R. and Souza, F.T. (2005), "Analysis of steel storage rack columns", J. Construct. Steel Res., 61(8), 1135-1146. https://doi.org/10.1016/j.jcsr.2005.02.004
  7. Kwon, Y.B. and Park, H.S. (2011), "Compression tests of longitudinally stiffened plates undergoing distortional buckling", J. Construct. Steel Res., 67(8), 1212-1224. https://doi.org/10.1016/j.jcsr.2011.02.015
  8. LERMA (2013), Distortional buckling strength of American type cold formed rack columns; Laboratori d'elasticitati Resistencia de Materials, May.
  9. Li, Z. and Schafer, B.W. (2010), Buckling analysis of cold-formed steel members with general boundary conditions using CUFSM: conventional and constrained finite strip methods. www.ce.jhu.edu/bschafer/cufsm/
  10. Pastor, M.M., Casafont, M. and Roure, F. (2009), "Optimization of cold-formed steel pallet racking cross-sections for flexural-torsional buckling with constraints on the geometry", Eng. Struct., 31(11), 2711-2722. https://doi.org/10.1016/j.engstruct.2009.06.017
  11. Pekoz, T., Casafont, M., Roure, F., Somalo, M.R., Kiymaz, G., Pastor, M.M. and Bonada, J. (2013), "Current research on cold-formed steel industrial racks", Proceedings of the 5th Steel Structures Symposium, Istanbul, Turkey, November.
  12. Roure, F., Pastor, M.M., Casafont, M. and Somalo, M.R. (2011), "Stub column tests for racking design: Experimental testing, FE analysis and EC3", Thin-Wall. Struct., 49(1), 167-184. https://doi.org/10.1016/j.tws.2010.09.002
  13. Sarawit, A. (2006), CUTWP Thin-walled section properties, www.ce.jhu.edu/bschafer/cutwp/
  14. Schafer, B.W. (1997), "Cold-formed steel behavior and design: Analytical and numerical modeling of elements and members with longitudinal stiffeners", Ph.D. Dissertation; Cornell University, Ithaca, NY, USA.
  15. Schafer, B.W. (2006a), Direct Strength Method (DSM) Design Guide, American Iron and Steel Institute; Washington, D.C., USA.
  16. Schafer, B.W. (2006b), "Review: The Direct Strength Method of Cold-Formed Steel Member Design", In: Stability and Ductility of Steel Structures, Lisbon, Portugal, September.
  17. Schafer, B.W. (2008), "Review: The Direct Strength Method of cold-formed steel member design", J. Construct. Steel Res., 64(7-8), 766-778. https://doi.org/10.1016/j.jcsr.2008.01.022
  18. Schafer, B.W. (2011), "Cold-formed steel structures around the world: A review of recent advances in applications, analysis and design", Steel Construct., 4(3), 141-149. https://doi.org/10.1002/stco.201110019
  19. Von Karman, T., Sechler, E.E. and Donnell, L.H. (1932), "The strength of thin plates in compression", Transactions ASME, 54(4), 53-57.
  20. Yu, W.W. and LaBoube, R.A. (2010), Cold-Formed Steel Design, (4th Edition), John Wiley & Sons, Inc., Hoboken, NJ, USA.

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