Structural Performance of Light Gauge Steel Compression Members at Elevated Temperatures

Mahendran, Mahen & Ranawaka, Thanuja N. (2008) Structural Performance of Light Gauge Steel Compression Members at Elevated Temperatures. In Richard Liew, J.Y. & Choo, Y.S. (Eds.) 5th International Conference on Advances in Steel Structures, 5-7 Dec 2007, Singapore.


Despite the importance of fire safety design of building structures, the structural behaviour of light gauge cold-formed steel members under fire conditions is not well understood. The light gauge steel members are susceptible to various buckling modes including distortional buckling. The distortional buckling effects associated with thin and high strength steel members are significant and the effects of fire conditions on the distortional buckling behaviour are not known. Therefore a research project was undertaken to investigate the distortional buckling behaviour of light gauge cold-formed steel members under axial compression. It included tensile coupon tests to determine the mechanical properties and detailed laboratory experiments and numerical analyses of channel members subject to axial compression at elevated temperatures up to 800 degrees Celsius. The results were compared with the current design rules and appropriate modifications were proposed. This paper presents a summary of the results from this investigation on the distortional buckling behaviour of cold-formed steel columns.

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ID Code: 12966
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Light gauge steel compression members, fire resistance, distortional buckling, elevated temperatures, design rules
ISBN: 9789810593650
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2007 (please consult author)
Deposited On: 11 Mar 2008 00:00
Last Modified: 27 Jan 2015 04:02

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