Steel and Composite Structures

  • 제21권3호
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  • Pages.629-659
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  • 2016
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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Web crippling strength of cold-formed stainless steel lipped channel-sections with web openings subjected to interior-one-flange loading condition

  • Yousefi, Amir M. (Department of Civil and Environmental Engineering, The University of Auckland) ;
  • Lim, James B.P. (Department of Civil and Environmental Engineering, The University of Auckland) ;
  • Uzzaman, Asraf (Department of Mechanical and Aerospace Engineering, The University of Strathclyde) ;
  • Lian, Ying (SPACE, David Keir Building, Queen's University) ;
  • Clifton, G. Charles (Department of Civil and Environmental Engineering, The University of Auckland) ;
  • Young, Ben (Department of Civil Engineering, The University of Hong Kong)
  • 투고 : 2016.03.07
  • 심사 : 2016.05.15
  • 발행 : 2016.06.30
⟨ 이전 논문 다음 논문 ⟩

초록

In cold-formed stainless steel lipped channel-sections, web openings are becoming increasingly popular. Such openings, however, result in the sections becoming more susceptible to web crippling, especially under concentrated loads applied near the web opening. This paper presents the results of a finite element parametric study into the effect of circular web openings on the web crippling strength of cold-formed stainless steel lipped channel-sections for the interior-one-flange (IOF) loading condition. This involves a bearing load applied to the top flange of a length of member, away from the end supports. The cases of web openings located centred beneath the bearing load (i.e. beneath the bearing plate delivering the load) and offset to the bearing plate, are considered. Three grades of stainless steel are considered: duplex EN1.4462, austenitic EN1.4404 and ferretic EN1.4003. In total, 2218 finite element models were analyzed. From the results of the parametric study, strength reduction factors for load bearing capacity are determined, where these reduction factors are applied to the bearing capacity calculated for a web without openings, to take account the influence of the web openings. The strength reduction factors are first compared to equations recently proposed for cold-formed carbon steel lipped channel-sections. It is shown that for the case of the duplex grade, the strength reduction factor equations for cold-formed carbon steel are conservative but only by 2%. However, for the cases of the austentic and ferritic grades, the cold-formed carbon steel equations are around 9% conservative. New strength reduction factor equations are proposed for all three stainless steel grades.

키워드

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  4. Cold-formed ferritic stainless steel unlipped channels with web openings subjected to web crippling under interior-two-flange loading condition – Part II: Parametric study and design equations vol.116, 2017, https://doi.org/10.1016/j.tws.2017.03.025
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  6. Design of cold-formed stainless steel lipped channel sections with web openings subjected to web crippling under end-one-flange loading condition vol.20, pp.7, 2017, https://doi.org/10.1177/1369433216670170
  7. Cold-formed ferritic stainless steel unlipped channels with web openings subjected to web crippling under interior-two-flange loading condition – Part I: Tests and finite element model validation vol.116, 2017, https://doi.org/10.1016/j.tws.2017.03.026
  8. Web Crippling Behavior of Unlipped Cold-Formed Ferritic Stainless Steel Channels Subject to One-Flange Loadings vol.144, pp.8, 2018, https://doi.org/10.1061/(ASCE)ST.1943-541X.0002118
  9. Numerical investigation of web crippling strength in cold-formed stainless steel lipped channels with web openings subjected to interior-two-flange loading condition vol.23, pp.3, 2016, https://doi.org/10.12989/scs.2017.23.3.363
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  13. Design of cold-formed ferritic stainless steel RHS perforated beams vol.250, pp.None, 2016, https://doi.org/10.1016/j.engstruct.2021.113372
  14. Unified design equations for web crippling failure of cold-formed ferritic stainless steel unlipped channel-sections with web holes vol.45, pp.None, 2016, https://doi.org/10.1016/j.jobe.2021.103685