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A buckling model for the stability design of steel columns with intermediate gravity loads

Journal Article


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Abstract


  • This paper points out an accurate buckling model for determining the flexural effective length of a steel column subjected to intermediate gravity loads, for applications in the 2D second-order elastic analysis based design procedure. The proposed buckling model has "notional" horizontal restraints where equivalent horizontal forces have been applied, and can be readily programmed into a structural analysis/design software. Thirty columns having various end restraints and subjected to concentrated gravity loads within their unsupported lengths are analysed to demonstrate the merits of the proposed buckling model. It is shown that, in most of the cases analysed, the proposed buckling model leads to more liberal column capacities compared to the use of the unity effective length factor or the buckling model described in the European drive-in rack design code. The more liberal capacities are very close to the ultimate loads determined through second-order plastic-zone analysis.

Authors


  •   Teh, Lip H.
  •   Gilbert, Benoit P. (external author)

Publication Date


  • 2016

Citation


  • Teh, L. H. & Gilbert, B. P. (2016). A buckling model for the stability design of steel columns with intermediate gravity loads. Journal of Constructional Steel Research, 117 243-254.

Scopus Eid


  • 2-s2.0-84946601311

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5972&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4945

Has Global Citation Frequency


Number Of Pages


  • 11

Start Page


  • 243

End Page


  • 254

Volume


  • 117

Place Of Publication


  • United Kingdom

Abstract


  • This paper points out an accurate buckling model for determining the flexural effective length of a steel column subjected to intermediate gravity loads, for applications in the 2D second-order elastic analysis based design procedure. The proposed buckling model has "notional" horizontal restraints where equivalent horizontal forces have been applied, and can be readily programmed into a structural analysis/design software. Thirty columns having various end restraints and subjected to concentrated gravity loads within their unsupported lengths are analysed to demonstrate the merits of the proposed buckling model. It is shown that, in most of the cases analysed, the proposed buckling model leads to more liberal column capacities compared to the use of the unity effective length factor or the buckling model described in the European drive-in rack design code. The more liberal capacities are very close to the ultimate loads determined through second-order plastic-zone analysis.

Authors


  •   Teh, Lip H.
  •   Gilbert, Benoit P. (external author)

Publication Date


  • 2016

Citation


  • Teh, L. H. & Gilbert, B. P. (2016). A buckling model for the stability design of steel columns with intermediate gravity loads. Journal of Constructional Steel Research, 117 243-254.

Scopus Eid


  • 2-s2.0-84946601311

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5972&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/4945

Has Global Citation Frequency


Number Of Pages


  • 11

Start Page


  • 243

End Page


  • 254

Volume


  • 117

Place Of Publication


  • United Kingdom