Buckling resistance of axially loaded cold-formed steel columns

This paper reports an experimental campaign on the buckling behaviour of compressed single and built-up cold-formed steel columns. Four types of cross-sections were tested, namely, one single, one open built-up and two closed built-up, considering two end-support conditions, pin-ended and fix-ended....

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Bibliographic Details
Published in:Thin-walled structures 2016-09, Vol.106, p.358-375
Main Authors: Craveiro, Hélder D., Rodrigues, João Paulo C., Laím, Luís
Format: Article
Language:English
Subjects:
Buckling
Built-up
Channels
Cold forming
Cold working
Cold-formed steel
Column
Columns (structural)
Cross sections
Cross-section
Experimental
Open
Steel columns
Structural steels
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Summary:This paper reports an experimental campaign on the buckling behaviour of compressed single and built-up cold-formed steel columns. Four types of cross-sections were tested, namely, one single, one open built-up and two closed built-up, considering two end-support conditions, pin-ended and fix-ended. The obtained results were compared with the design predictions of EN1993-1-3:2004 and AISI S100-07. For pin-ended lipped channel columns the design predictions are in good agreement with the experimental results, however for the fix-ended columns the predictions may be conservative. For built-up columns was found that increasing the number of profiles may lead to unsafe design predictions. •Experimental research on the buckling resistance of cold-formed steel columns.•Results were compared against the design predictions of EN1993-1-3:2004.•For pin-ended lipped channel columns the agreement is very good.•For fix-ended columns the design predictions may be conservative.•For built-up columns the design predictions are in some extent unsafe.
ISSN:0263-8231
1879-3223
DOI:10.1016/j.tws.2016.05.010