Computational Procedure for Normal Stresses in C-Sections and Z-Sections with One Flange Attached to Sheathing
Publication: Journal of Structural Engineering
Volume 142, Issue 2
Abstract
A method is presented to calculate the elastic flexural and warping normal stresses in simple span cold-formed C- and Z-sections, with end torsional restraints and one flange attached to the sheathing. The method utilizes a displacement compatibility approach to calculate the normal stresses at transition points in the cross section, i.e., web-flange intersection, flange-stiffener intersection, and the end of the flange stiffener. The method incorporates the stiffness of the diaphragm and the torsion-restraining effects of the sheathing. The example provided shows that the distribution of stresses across the cross section is sensitive to the restraining effects of the sheathing and can deviate significantly from the typically assumed stress distribution of constrained bending. The procedure for calculating the stresses and deformations and system forces is outlined, and trends observed by the authors are discussed.
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References
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Information
Published In
Journal of Structural Engineering
Volume 142 • Issue 2 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Apr 3, 2015
Accepted: Jul 28, 2015
Published online: Oct 5, 2015
Published in print: Feb 1, 2016
Discussion open until: Mar 5, 2016
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