Fire resistnace of cold-formed steel columns

Authors

  • Nuno Lopes
  • Flavio Arrais
  • Paulo Vila Real

Abstract

Steel structural elements composed of cold-formed thin walled sections, are common in buildings due to their lightness and ability to support large spans, however they are more susceptible to the occurrence of local buckling. Additionally, in these members, when subjected to axial compression, the flexural buckling, torsional-flexural buckling and distortional buckling are also common failure modes. These instability phenomena are intensified at high temperatures. This work has the main objective of presenting a numerical study on the fire behaviour of cold-formed thin walled C sections when subjected to compression and high temperatures. The influence of different geometrical imperfections shapes and residual stresses on the ultimate load are evaluated. Comparisons between the finite element numerical results, obtained with geometric and material non-linear analysis, and the Eurocode 3 Parts 1-2 and 1-3 rules are also made.

Downloads

Published

2015-10-15

Issue

2013: Proceedings of International Conference in Prague 19-20 April 2013

Section

Articles

License

Authors who publish with ASFE agree to the following terms:

1. Authors retain copyright and grant the ASFE right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).