Investigation of cold-formed steel top-hat sections under bending

A. Uzzaman, A.M. Wrzesien, R. Hamilton, J.B.P. Lim, D. Nash

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

In recent years, with the introduction of higher strength grades, cold-formed steel sections have become increasingly more slender. As a result, top-hat purlin sections have become an alternative to conventional zed purlins, particularly when smaller purlin spans (around 4 m) are required. Such top-hat sections are torsionally stiffer than zed purlins, and have greater resistance against lateral-torsional buckling. Furthermore, they do not require anti-sag rods. However, when determining their strength, they are susceptible to buckling. In this paper, a combination of full-scale laboratory tests and finite element analyses are used to investigate the bending strength of such top-hat sections. Both uplift and gravity loading directions are considered. In this paper, twenty-seven full-scale experimental tests on top-hat sections are described. The moment capacities obtained experimentally are compared against those predicted by the Eurocodes and non-linear elasto-plastic finite element analyses. © Civil-Comp Press, 2013.
Original languageEnglish
Title of host publicationProceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing
EditorsB.H.V. Topping, P. Iványi
Place of PublicationStirlingshire
PublisherCivil-Comp Press
Volume102
ISBN (Print)9781905088577
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event14th International Conference on Civil, Structural and Environmental Engineering Computing - Cagliari, Sardinia, Italy
Duration: 3 Dec 20136 Dec 2013
http://www.civil-comp.com/conf/cc13.htm

Publication series

NameCivil-Comp Proceedings
PublisherCivil-Comp Press
Volume102
ISSN (Print)1759-3433

Conference

Conference14th International Conference on Civil, Structural and Environmental Engineering Computing
Abbreviated titleICC2013
Country/TerritoryItaly
CitySardinia
Period3/12/136/12/13
Internet address

Keywords

  • Buckling
  • Computer aided engineering
  • Environmental engineering
  • Studs (structural members)
  • Cold formed steel section
  • Cold-formed steel
  • Eurocode 3
  • Experimental test
  • Lateral-torsional buckling
  • Non linear elasto plastics
  • Purlins
  • Top-hat sections
  • Finite element method

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