Session Start Date

11-9-2016

Session End Date

11-9-2016

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

Publication Date

11-9-2016

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

Available for download on Thursday, November 01, 2018

Share

 
COinS
 
Nov 9th, 12:00 AM Nov 9th, 12:00 AM

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.