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Design of LiteSteel Beam floor joists with web opening using an equivalent web thickness method

Seo, Jung Kwan & Mahendran, Mahen (2011) Design of LiteSteel Beam floor joists with web opening using an equivalent web thickness method. In 6th International Conference on Thin-walled Structures (ICTWS 2011), 5-7 September 2011, Timisoara, Romania.

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Abstract

The LiteSteel Beam (LSB) is an innovative cold-formed steel hollow flange section. When used as floor joists, the LSB sections require holes in the web to provide access for various services. In this study a detailed investigation was undertaken into the elastic lateral distortional buckling behaviour of LSBs with circular web openings subjected to a uniform moment using finite element analysis. Validated ideal finite element models were used first to study the effect of web holes on their elastic lateral distortional buckling behaviour. An equivalent web thickness method was then proposed using four different equations for the elastic buckling analyses of LSBs with web holes. It was found that two of them could be successfully used with approximate numerical models based on solid web elements with an equivalent reduced thickness to predict the elastic lateral distortional buckling moments.

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ID Code: 49384
Item Type: Conference Paper
Keywords: LiteSteel Beam, floor joists, web openings, equivalent web thickness method, finite element analyses
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 2011 Please consult the authors.
Deposited On: 28 Mar 2012 10:30
Last Modified: 28 Mar 2012 11:28

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