Web crippling study of rivet fastened rectangular hollow flange channel beams with flanges fastened to supports

Steau, Edward, Poologanathan, Keerthan, & Mahendran, Mahen (2016) Web crippling study of rivet fastened rectangular hollow flange channel beams with flanges fastened to supports. Advances in Structural Engineering. (In Press)

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Abstract

Thin-walled steel hollow flange channel beams are commonly used as joists and bearers in various flooring systems in buildings. A new rivet fastened rectangular hollow flange channel beam (RHFCB) was proposed using an intermittently rivet fastening process as an alternative to welded beams. This flexible fastening process allows RHFCBs to have greater section optimisation, by configuring web and flange widths and thicknesses. In the industrial applications of RHFCBs as flooring, roofing or modular building systems, their flanges will be fastened to supports, which will provide increased capacities. However, no research has been conducted to investigate the web crippling capacities of RHFCBs with flanges fastened to supports under two-flange load cases. Therefore an experimental study was conducted to investigate the web crippling behaviour and capacities of RHFCBs based on the new AISI S909 standard test method. The web crippling capacities were compared with the predictions from the design equations in AS/NZS 4600 and AISI S100 to determine their accuracy in predicting the web crippling capacities of RHFCBs. Test results showed that these design equations are considerably conservative for the ETF load case while being unconservative for the ITF load case. New equations are proposed to determine the web crippling capacities of RHFCBs with flanges fastened to supports. Test results showed that web crippling capacities increased by 78% and 65% on average for the ETF and ITF load cases when flanges were fastened to supports. This paper presents the details of this web crippling experimental study of RHFCB sections and the results.

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ID Code: 97988
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Cold-formed Steel Beams, Rivet Fastened Rectangular Hollow Flange Channel Beams, Flanges Unfastened and Fastened to Supports, Web Crippling, ETF and ITF Load Cases, Experiments
DOI: 10.1177/1369433216670172
ISSN: 1369-4332
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2016 Multi-Science Publishing Co. Ltd.
Deposited On: 08 Aug 2016 22:47
Last Modified: 18 Apr 2017 13:48

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