Numerical Studies of Cold-formed Steel Beams Subject to Lateral-torsional Buckling at Elevated Temperatures

Dolamune Kankanamge, Nirosha & Mahendran, Mahen (2008) Numerical Studies of Cold-formed Steel Beams Subject to Lateral-torsional Buckling at Elevated Temperatures. In Mahendran, Mahen (Ed.) 5th International Conference on Thin-walled Structures : ICTWS 2008 : Innovations in Thin-walled Structures, 18-20 June 2008, Gold Coast, Australia.

Abstract

Fire is a critical issue for steel buildings and needs greater attention since it can cause loss of lives and property. When temperature increases, the mechanical properties of cold-formed steels deteriorate, resulting in loss of load bearing capacity of cold-formed steel members. Engineers and architects face considerable problems in using cold-formed steel members in structural applications because of the lack of knowledge and understanding of their behaviour at elevated temperatures and the lack of suitable design specifications for fire conditions. Therefore a research project was undertaken to investigate the flexural behaviour of cold-formed steel beams at elevated temperatures. A suitable finite element model was first developed to simulate the lateral-torsional buckling behaviour of commonly used cold-formed lipped C-section steel beams at elevated temperatures. This paper presents the details of the finite element model used in this research project, and compares the finite element analysis results with the predictions from the currently available design rules.

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ID Code: 13918
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Lateral, torsional buckling, Cold, formed steel beams, Elevated temperature, Numerical studies
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2008 (please consult author)
Deposited On: 30 Jun 2008 00:00
Last Modified: 29 Feb 2012 13:47

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