Experimental studies of the shear behavior of LiteSteel Beams

Poologanathan, Keerthan & Mahendran, Mahen (2009) Experimental studies of the shear behavior of LiteSteel Beams. In Proceedings of 9th International Conference on Steel Concrete Composite and Hybrid Structures, University of Leeds, Leeds.

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This paper presents the details of experimental studies on the shear behaviour of a recently developed, cold-formed steel beam known as LiteSteel Beam (LSB). The LSB section has a unique shape of a channel beam with two rectangular hollow flanges and is produced by a patented manufacturing process involving simultaneous cold-forming and dual electric resistance welding. To date, no research has been undertaken on the shear behaviour of LiteSteel beams with torsionally rigid, rectangular hollow flanges. In the present investigation, experimental studies involving more than 30 shear tests were carried out to investigate the shear behaviour of 13 different LSB sections. It was found that the current design rules in cold-formed steel structures design codes are very conservative for the shear design of LiteSteel beams. Significant improvements to web shear buckling occurred due to the presence of rectangular hollow flanges while considerable post-buckling strength was also observed. Experimental results are presented and compared with corresponding predictions from the current design codes in this paper. Appropriate improvements have been proposed for the shear strength of LSBs based on AS/NZS 4600 design equations.

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ID Code: 30256
Item Type: Conference Paper
Refereed: Yes
Keywords: LiteSteel Beams, Experiments, Shear Strength
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
Copyright Owner: Copyright 2009 [please consult the authors]
Deposited On: 07 Feb 2010 21:25
Last Modified: 29 Feb 2012 14:06

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