New design rules for the shear strength of LiteSteel Beams

Poologanathan, Keerthan & Mahendran, Mahen (2011) New design rules for the shear strength of LiteSteel Beams. Journal of Constructional Steel Research, 67(6), pp. 1050-1063.

Images (PDF 454kB)
Submitted Version.
Text (PDF 177kB)
Submitted Version.
Tables (PDF 128kB)
Submitted Version.

View at publisher


Abstract: The LiteSteel Beam (LSB) is a new cold-formed hollow flange channel section produced using dual electric resistance welding and automated continuous roll-forming technologies. The innovative LSB sections have many beneficial characteristics and are commonly used as flexural members in building construction. However, limited research has been undertaken on the shear behaviour of LSBs. Therefore a detailed investigation including both numerical and experimental studies was undertaken to investigate the shear behaviour of LSBs. Finite element models of LSBs in shear were developed to simulate the nonlinear ultimate strength behaviour of LSBs including their elastic buckling characteristics, and were validated by comparing their results with experimental test results. Validated finite element models were then used in a detailed parametric study into the shear behaviour of LSBs. The parametric study results showed that the current design rules in cold-formed steel structures design codes are very conservative for the shear design of LSBs. Significant improvements to web shear buckling occurred due to the presence of torsionally rigid rectangular hollow flanges while considerable post-buckling strength was also observed. This paper therefore proposes improved shear strength design rules for LSBs within the current cold-formed steel code guidelines. It presents the details of the parametric study and the new shear strength equations. The new equations were also developed based on the direct strength method. The proposed shear strength equations have the potential to be used with other conventional cold-formed steel sections such as lipped channel sections.

Impact and interest:

31 citations in Scopus
Search Google Scholar™
21 citations in Web of Science®

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:

177 since deposited on 29 Feb 2012
15 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: 48917
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: LiteSteel beam, Ultimate shear strength, Cold-formed steel structures, Direct strength method, Finite element analyses, Parametric studies, Slender web, Hollow flanges
DOI: 10.1016/j.jcsr.2010.11.010
ISSN: 1873-5983 (online) 0143-974X (print)
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 2010 Elsevier Ltd.
Deposited On: 29 Feb 2012 22:53
Last Modified: 22 May 2017 19:41

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page