Bearing capacity of cold-formed unlipped channels with restrained flanges under EOF and IOF load cases

Janarthanan, Balasubramaniam, Mahendran, Mahen, & Gunalan, Shanmuganathan (2015) Bearing capacity of cold-formed unlipped channels with restrained flanges under EOF and IOF load cases. Steel Construction Design and Research, 8(3), pp. 146-154.

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Abstract

Bearing failure is a form of localized failure that occurs when thin-walled cold-formed steel sections are subjected to concentrated loads or support reactions. To determine the bearing capacity of cold-formed channel sections, a unified design equation with different bearing coefficients is given in the current North American specification AISI S100 and the Australian/New Zealand standard AS/NZS 4600. However, coefficients are not available for unlipped channel sections that are normally fastened to supports through their flanges. Eurocode 3 Part 1.3 includes bearing capacity equations for different load cases, but does not distinguish between fastened and unfastened support conditions. Therefore, an experimental study was conducted to determine the bearing capacities of these sections as used in floor systems. Twenty-eight web bearing tests on unlipped channel sections with restrained flanges were conducted under End One Flange (EOF) and Interior One Flange (IOF) load cases. Using the results from this study, a new equation was proposed within the AISI S100 and AS/NZS 4600 guidelines to determine the bearing capacities of cold-formed unlipped channels with flanges fastened to supports. A new design rule was also proposed based on the direct strength method.

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ID Code: 89631
Item Type: Journal Article
Refereed: Yes
Keywords: Cold-formed unlipped channel sections, Bearing capacity, EOF and IOF load cases, Fastened and unfastened to supports, Experimental study, Design rules, Direct strength method
DOI: 10.1002/stco.201510027
ISSN: 1867-0520
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin
Deposited On: 29 Oct 2015 01:01
Last Modified: 02 Oct 2016 12:55

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