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Member moment capacities of mono-symmetric LiteSteel beam floor joists with web openings

Seo, Jung Kwan & Mahendran, Mahen (2012) Member moment capacities of mono-symmetric LiteSteel beam floor joists with web openings. Journal of Constructional Steel Research, 70(March), pp. 153-166.

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Abstract

Recently developed cold-formed LiteSteel beam (LSB) sections have found increasing popularity in residential, industrial and commercial buildings due to their light weight and cost-effectiveness. Another beneficial characteristic is that they allow torsionally rigid rectangular flanges to be combined with economical fabrication processes. Currently, there is significant interest in the use of LSB sections as flexural members in floor joist systems. When used as floor joists, these sections require openings in the web to provide access for inspection and other services. At present, however, there is no design method available that provides accurate predictions of the moment capacities of LSBs with web openings. This paper presents the results of an investigation of the buckling and ultimate strength behaviour of LSB flexural members with web openings. A detailed fine element analysis (FEA)-based parametric study was conducted with the aim of developing appropriate design rules and making recommendations for the safe design of LSB floor joists. The results include the required moment capacity curves for LSB sections with a range of web opening combinations and spans and the development of appropriate design rules for the prediction of the ultimate moment capacities of LSBs with web openings.

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ID Code: 49377
Item Type: Journal Article
Keywords: Cold-formed steel structures, LiteSteel Beam, Web opening, Nonlinear finite element analysis, Design rules
DOI: 10.1016/j.jcsr.2011.07.008
ISSN: 1873-5983
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 Elsevier Ltd.
Copyright Statement: NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Constructional Steel Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Constructional Steel Research, [VOL 70, ISSUE March, (2012)] DOI: 10.1016/j.jcsr.2011.07.008
Deposited On: 28 Mar 2012 15:12
Last Modified: 28 Mar 2012 15:35

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