Disturbed Stress Field Model for Reinforced Concrete: Implementation
Publication: Journal of Structural Engineering
Volume 127, Issue 1
Abstract
The Disturbed Stress Field Model is a smeared delayed-rotating-crack model, proposed recently as an alternative to fully fixed or fully rotating crack models, for representing the behavior of cracked reinforced concrete. It is an extension of the modified compression field theory; advancements relate to the inclusion of crack shear slip in the element compatibility relations, the decoupling of principal stress and principal strain directions, and a revised look at compression softening and tension stiffening mechanisms. In this paper, a procedure is described for implementing the formulations of the Disturbed Stress Field Model into a nonlinear finite-element algorithm. The procedure is based on a total-load secant-stiffness approach, wherein the crack slip displacements are treated as offset strains. Computational aspects of the formulation are shown to be simple and numerically robust. The hybrid crack slip formulation used is found to accurately model the divergence of stress and strain directions, providing an improved representation of behavior. Predictions of shear strength and failure mode are significantly influenced in some cases.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Kollegger, J., and Mehlhorn, G. ( 1990). “Experimentelle Untersuchungen zur Bestimmung der Druckfestigkeit des gerissenen Stahlbetons bei einer Querzugbeanspruchung.” Rep. 413, Deutscher Ausschuss für Stahlbeton, Berlin (in German).
2.
Kuzmanovic, S. ( 1998). “An investigation of the shear design of a reinforced concrete box structure.” MASc thesis, University of Toronto, Toronto.
3.
Lefas, I. D., Kotsovos, M. D., and Ambraseys, N. N. ( 1990). “Behaviour of reinforced concrete structural walls: Strength, deformation characteristics and failure mechanism.” ACI Struct. J., 87(1), 23–31.
4.
Okamura, H., and Maekawa, K. ( 1991). Nonlinear analysis and constitutive models of reinforced concrete, ISBN 7655-1506-0, University of Tokyo, Tokyo.
5.
Shirai, S., and Noguchi, H. ( 1989). “Compressive deterioration of cracked concrete,” Proc., ASCE Struct. Congress 1989: Design, analysis, and testing, ASCE, New York, 1–10.
6.
Vecchio, F. J. (1990). “Reinforced concrete membrane element formulations.”J. Struct. Engrg., ASCE, 116(3), 730–750.
7.
Vecchio, F. J. (1992). “Finite element modeling of concrete expansion and confinement.”J. Struct. Engrg., ASCE, 118(9), 2390–2406.
8.
Vecchio, F. J. ( 1999). “Analysis of shear-critical reinforced concrete beams.” ACI Struct. J., 97(1), 102–110.
9.
Vecchio, F. J. (2000). “Disturbed stress field model for reinforced concrete: Formulation.”J. Struct. Engrg., ASCE, 126(9), 1070–1077.
10.
Vecchio, F. J., and Collins, M. P. ( 1982). “Response of reinforced concrete to in-plane shear and normal stresses.” Rep. No. 82-03, Dept. of Civ. Engrg., University of Toronto, Toronto.
11.
Vecchio, F. J., and Collins, M. P. ( 1986). “The modified compression field theory for reinforced concrete elements subjected to shear.” ACI J., 83(2), 219–231.
12.
Walraven, J. C. (1981). “Fundamental analysis of aggregate interlock.”J. Struct. Div., ASCE, 107(11), 2245–2270.
Information & Authors
Information
Published In
History
Received: Nov 19, 1999
Published online: Jan 1, 2001
Published in print: Jan 2001
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.