Fire Design Methodology for Cold-Formed Steel C-Section Flexural Members
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Bibliographic Details
| Author(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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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Published in: | IABSE Symposium Vancouver 2017 | ||||
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| Page(s): | 3348-3355 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2017 | ||||
| DOI: | 10.2749/222137817822208483 | ||||
| Abstract: |
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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| Keywords: |
steel finite element analyses FEA buckling beams cold-formed fire fire safety design
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