Capturing Out-of-Plane Shear Failures in the Analysis of Reinforced Concrete Shells
Publication: Journal of Structural Engineering
Volume 141, Issue 12
Abstract
A procedure for nonlinear analysis of RC slabs and shell structures is presented. Cracked RC is treated as an orthotropic material governed by a smeared rotating crack procedure and the constitutive formulations of the disturbed stress field model. The analysis procedure is implemented within the framework of a finite-element program employing layered thick-shell elements that consider out-of-plane (through-thickness) shear deformations. A simple modification method employing an effective shear strain concept is introduced to improve the out-of-plane performance of the layered shell element for RC applications. The adequacy of the procedure is verified using test data of RC members controlled by out-of-plane shear failure mechanisms and elements under combined in-plane and out-of-plane loading scenarios. The nonlinear finite-element program is shown to be suitable for elements exhibiting ductile or brittle responses, and the shear modification method introduced is found to be capable of capturing out-of-plane shear failures.
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Acknowledgments
Financial support provided by the Natural Sciences and Engineering Research Council of Canada (NSERC) and by the industry sponsor Morrison Hershfield Ltd. is gratefully acknowledged.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 12 • December 2015
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jan 14, 2014
Accepted: Feb 21, 2015
Published online: Apr 7, 2015
Discussion open until: Sep 7, 2015
Published in print: Dec 1, 2015
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