Session Dates
09 Nov 2016
Abstract
The North American Specification S100:2012 Edition has recently included DSM design rules for unperforated channel sections in shear. However, there are no rules presented in this standard for the DSM in shear for sections with holes. Recently, a testing program has been performed at the University of Sydney to determine the ultimate strength of high strength cold-formed C-sections with a thickness of 1.5 mm and central square holes of varying sizes. Three different sizes of the square holes were chosen for testing. For thin sections, the DSM shear curve was found to be applicable for design of sections with square holes up to certain sizes. For larger hole sizes, the DSM shear curve without tension field action (TFA) should be utilised as the channels with large reduced web area do not mobilise the TFA. This paper presents a further experimental investigation on the same cold-formed C-sections but thicker thicknesses of 1.9 mm and 2.4 mm. The square holes were also cut centrally with three different hole sizes. As the sections are thicker, the yield criterion plays a more important role. The proposals for different shear yield load are made in DSM equations for shear. Recommendations for an extension to the DSM in shear for channel sections with square holes are given in the paper.
Department(s)
Civil, Architectural and Environmental Engineering
Research Center/Lab(s)
Wei-Wen Yu Center for Cold-Formed Steel Structures
Meeting Name
International Specialty Conference on Cold-Formed Steel Structures 2016
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2016 Missouri University of Science and Technology, All rights reserved.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Pham, Cao Hung; Pelosi, Andreas; Earls, Thomas; and Hancock, Gregory J., "Experimental Investigation of Cold-Formed C-Sections with Central Square Holes in Shear" (2016). CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018). 4.
https://scholarsmine.mst.edu/isccss/23iccfss/session4/4
Experimental Investigation of Cold-Formed C-Sections with Central Square Holes in Shear
The North American Specification S100:2012 Edition has recently included DSM design rules for unperforated channel sections in shear. However, there are no rules presented in this standard for the DSM in shear for sections with holes. Recently, a testing program has been performed at the University of Sydney to determine the ultimate strength of high strength cold-formed C-sections with a thickness of 1.5 mm and central square holes of varying sizes. Three different sizes of the square holes were chosen for testing. For thin sections, the DSM shear curve was found to be applicable for design of sections with square holes up to certain sizes. For larger hole sizes, the DSM shear curve without tension field action (TFA) should be utilised as the channels with large reduced web area do not mobilise the TFA. This paper presents a further experimental investigation on the same cold-formed C-sections but thicker thicknesses of 1.9 mm and 2.4 mm. The square holes were also cut centrally with three different hole sizes. As the sections are thicker, the yield criterion plays a more important role. The proposals for different shear yield load are made in DSM equations for shear. Recommendations for an extension to the DSM in shear for channel sections with square holes are given in the paper.
