GBT-based semi-analytical solutions for the elastic/plastic stability analysis of stainless steel thin-walled columns exposed to fire

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Abstract

This paper presents and illustrates the application of an efficient Generalized Beam Theory (GBT) semi-analytical solution procedure to determine elastic and plastic bifurcation loads (linear stability analysis) of stainless steel thin-walled members subjected to uniform compression and exposed to fire. Besides global (flexural or flexural-torsional) buckling, the proposed GBT formulation allows for cross-section deformation and therefore makes it possible to capture local and distortional buckling. The temperature effect is taken into account using the material law for stainless steel specified in Eurocode 3 part 1-4 (CEN 2006) and Annex C of part 1-2 (CEN 2009). For plastic buckling, the material tangent moduli are obtained using both J2 small-strain incremental and deformation plasticity theories. For illustrative purposes, the procedure is applied to columns with a lipped channel cross-section.

Original languageEnglish
Title of host publicationStability and Ductility of Steel Structures - Proceedings of the International Colloquia on Stability and Ductility of Steel Structures, 2019
EditorsFrantišek Wald, Michal Jandera
PublisherCRC Press/Balkema
Pages434-442
Number of pages9
ISBN (Print)9780367335038
Publication statusPublished - Sep 2019
EventInternational Colloquia on Stability and Ductility of Steel Structures, 2019 - Prague, Czech Republic
Duration: 11 Sep 201913 Sep 2019

Conference

ConferenceInternational Colloquia on Stability and Ductility of Steel Structures, 2019
CountryCzech Republic
CityPrague
Period11/09/1913/09/19

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