Fire Design Methodology for Cold-Formed Steel C-Section Flexural Members
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Détails bibliographiques
| Auteur(s): |
Luís Laím
(ISISE – Institute for Sustainability and Innovation in Structural Engineering, University of Coimbra. Portugal)
João Paulo C. Rodrigues (ISISE – Institute for Sustainability and Innovation in Structural Engineering, University of Coimbra. Portugal) |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Publié dans: | IABSE Symposium Vancouver 2017 | ||||
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| Page(s): | 3348-3355 | ||||
| Nombre total de pages (du PDF): | 8 | ||||
| Année: | 2017 | ||||
| DOI: | 10.2749/222137817822208483 | ||||
| Abstrait: |
Fire design rules for cold-formed steel beams are commonly based on past research on hot-rolled steel beams. Hence this paper present a methodology for calculating the fire response of unrestrained cold-formed steel C-section flexural members, based on guidelines of Eurocode 3 Part 1.2 for fire design of steel beams and on results of experimental and numerical studies. European fire design rules were found to be unsafe or over-conservative, depending on their relative slenderness and serviceability load applied on the beams. Therefore, new formulae for lateral– torsional buckling of unrestrained cold-formed steel C-section flexural members, which approximate better their real behaviour in case of fire are proposed. Comparison with numerical moment capacities demonstrates the accuracy of the new design methodology. |
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| Mots-clé: |
acier poutres
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