Nonlinear Finite-Element Analysis of RC Shear Panels and Walls
Publication: Journal of Structural Engineering
Volume 124, Issue 3
Abstract
In the assessment of existing reinforced concrete structures, finite-element analysis plays an important role, particularly in regard to the evaluation of critical regions, regions with special detailing, or regions of stress concentration. A popular class of concrete model uses an orthotropic constitutive relation in which the directions of orthotropy are the principal directions of total strain. Since these directions change during the load-displacement response, such an approach is known as a rotating crack model. The models proposed to date differ in the description of the biaxial failure envelope, the uniaxial equivalent stress-strain relation, Poisson ratio, and the tension-compression behavior. This paper describes the implementation of an orthotropic concrete constitutive model in the finite-element analysis of reinforced concrete members. The emphasis of the paper is on the evaluation of the effect of orthotropic model parameters on the monotonic load-displacement relation of shear panels and walls under different stress states. The ability of the orthotropic concrete material model to assess failure mode, ultimate strength, and load-deformation behavior of this type of structural element is evaluated by correlation studies with available experimental data.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 124 • Issue 3 • March 1998
Pages: 298 - 308
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Mar 1, 1998
Published in print: Mar 1998
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