Lateral buckling strength of simply supported LiteSteel beams subject to moment gradient effects

Kurniawan, Cyrilus Winatama & Mahendran, Mahen (2009) Lateral buckling strength of simply supported LiteSteel beams subject to moment gradient effects. Journal of Structural Engineering, 135(9), pp. 1058-1067.

View at publisher


The flexural capacity of of a new cold-formed hollow flange channel section known as LiteSteel beam (LSB) is limited by lateral distortional buckling for intermediate spans, which is characterised by simultaneous lateral deflection, twist and web distortion. Recent research has developed suitable design rules for the member capacity of LSBs. However, they are limited to a uniform moment distribution that rarely exists in practice. Many steel design codes have adopted equivalent uniform moment distribution factors to accommodate the effect of non-uniform moment distributions in design. But they were derived mostly based on the data for conventional hot-rolled, doubly symmetric I-beams subject to lateral torsional buckling. The effect of moment distribution for LSBs, and the suitability of the current steel design code rules to include this effect for LSBs are not yet known. This paper presents the details of a research study based on finite element analyses of the lateral buckling strength of simply supported LSBs subject to moment gradient effects. It also presents the details of a number of LSB lateral buckling experiments undertaken to validate the results of finite element analyses. Finally, it discusses the suitability of the current design methods, and provides design recommendations for simply supported LSBs subject to moment gradient effects.

Impact and interest:

9 citations in Scopus
6 citations in Web of Science®
Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

598 since deposited on 04 Feb 2010
12 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 30255
Item Type: Journal Article
Refereed: Yes
Keywords: LiteSteel beams, Lateral distortional buckling, Lateral torsional buckling, Non-uniform moment distribution, Moment gradient , Finite element analyses
DOI: 10.1061/(ASCE)ST.1943-541X.0000044
ISSN: 0733-9445
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 2009 American Society of Civil Engineers.
Deposited On: 04 Feb 2010 23:54
Last Modified: 29 Feb 2012 14:06

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page