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Effect of moment gradient on the strength of litesteel beams

Kurniawan, Cyrilus W. & Mahendran, Mahen (2008) Effect of moment gradient on the strength of litesteel beams. In The Eleventh East Asia-Pacific Conference on Structural Engineering and Construction EASEC-11, November 19-21, 2008, Taipei, Taiwan.

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Abstract

A new cold-formed hollow flange channel section known as LiteSteel beam (LSB) has been developed recently in Australia. Due to its unique geometry, it is subjected to lateral distortional buckling, which reduces its member moment capacity for intermediate spans. Although new member moment capacity rules have been developed to allow for this in the case of uniform moment, the effect of non-unifom moment distribution is unknown. Equivalent uniform moment distribution factors are commonly used in the design codes to accommodate the effect of non-uniform moment distributions for conventional hot-rolled, doubly symmetric I-beams subject to lateral torsional buckling. However, their applicability to LSBs is not yet known. This paper presents the details of a finite element analysis study into the effects of moment gradient on the lateral buckling strength of simply supported LSBs and describes the important results in relation to the current design methods.

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ID Code: 16878
Item Type: Conference Paper
Keywords: LiteSteel beams, lateral distortional buckling, Finte element analyses, Moment gradient effects
ISBN: 9789868022249
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
Copyright Owner: Copyright 2008 (please consult author)
Deposited On: 12 Dec 2008 10:16
Last Modified: 29 Feb 2012 23:42

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