Physically Based Cyclic Tensile Model for RC Membrane Elements
Publication: Journal of Structural Engineering
Volume 142, Issue 12
Abstract
A physically based tensile model for RC membrane elements subjected to cyclic loading conditions is presented. Average concrete stresses are derived from equilibrium, compatibility, and constitutive relationships of a cracked RC element under biaxial stress-strain conditions. Cyclic bond degradation is explicitly accounted for in the equations governing tension-stiffening, crack-closing, and crack-opening. The proposed tensile model is combined with a compressive cyclic model to fully describe the axial response in the normal and parallel-to-the-crack directions. Along the crack, the constitutive model for shear is based on a new shear modulus, which allows divergence between principle stress and strain directions while satisfying equilibrium and compatibility conditions. The model is implemented within a fixed-crack membrane finite element and verified against experimental tests on shear panels and RC walls.
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Acknowledgments
The authors are very grateful to Prof. M. P. Collins for providing raw experimental data from reversed-cyclic membrane SE-element tests conducted at the University of Toronto. The authors also acknowledge the constructive criticism of two anonymous reviewers, who certainly have contributed to an improvement of the quality of the manuscript.
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Published In
Journal of Structural Engineering
Volume 142 • Issue 12 • December 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Sep 17, 2015
Accepted: Apr 12, 2016
Published online: Jul 1, 2016
Published in print: Dec 1, 2016
Discussion open until: Dec 1, 2016
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