Plasticity Model for Reinforced Concrete Elements Subjected to Overloads
Publication: Journal of Structural Engineering
Volume 127, Issue 11
Abstract
This paper presents a theoretical and computational framework for the analysis of structures that are subjected to inelastic static or dynamic overloads. Current practice in structural engineering assumes elastic material response for the analysis but applies the resulting solutions to design methods that are based on elastoplastic or perfectly plastic material response. This approach generates inaccuracies which, depending on the amount of overload, can be excessive because force distributions within statically indeterminate structures depend on the relative stiffnesses of the individual structural elements (i.e., beams and columns). The relative element stiffnesses within a structure change continuously under inelastic loading and can be significantly different from their initial elastic values. For this purpose, a new plasticity model that combines the nonlinear material response and the geometric characteristics of a structural element is developed. The model provides the computational efficiency and simplicity of matrix structural analysis and avoids modeling at the material level. Alternative analysis would require very expensive 2D or 3D finite-element computations using solid elements.
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References
1.
American Concrete Institute (ACI). ( 1991a). Committee 318, building code requirements for structural concrete (ACI 318-99) and commentary (ACI 318R-99), Detroit.
2.
American Concrete Institute (ACI). ( 1991b). Committee 318, Design handbook in accordance with the strength design method of ACI 318-83, Vol. 2–columns, SP-17A(85), Detroit.
3.
(CEN). ( 1991). “Eurocode 2: Design of concrete structures-part 1: General rules and rules for buildings.” ENV 1992-1-1 Technical Committee 250-SG2, CEN, Berlin.
4.
Chen, W. F., and Han, D. J. ( 1988). Plasticity for structural engineers, Springer, New York.
5.
Cook, R. D., Malkus, D. S., and Plesha, M. E. ( 1989). Concepts and applications of finite element analysis, 3rd Ed., Wiley, New York.
6.
Dafalias, Y. F., and Popov, E. P. ( 1975). “A model for nonlinearly hardening materials for complex loading.” Acta Mechanica, 21(3), 173–192.
7.
Karabinis, I. A., and Kiousis, P. D. ( 1994). “Effects of confinement on concrete columns: Plasticity approach. J. Struct. Enrg., ASCE, 120(9), 2747–2767.
8.
Karabinis, I. A., and Kiousis, P. D. (1996). “Strength and ductility of rectangular concrete columns: A plasticity approach.”J. Struct. Engrg., ASCE, 122(3), 267–274.
9.
Kiousis, P. D., and Abdulla, A. A. (1992). “Associative plasticity for dilatant soils.”J. Engrg. Mech., 118(4), 763–785.
10.
Mander, J. B., Priestley, M. J., and Park, R. (1988). “Theoretical stress-strain model for confined concrete.”J. Struct. Engrg., ASCE, 114(8), 1804–1826.
11.
Sheikh, S. A., and Uzumeri, S. M. (1982). “Analytical model for concrete confinement in tied columns.”J. Struct. Engrg., ASCE, 108(12), 2703–2722.
12.
Sheikh, S. A., and Yeh, C. C. (1992). “Analytical moment-curvature relations for tied concrete columns.”J. Struct. Engrg., ASCE, 118(2), 529–545.
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Received: Apr 21, 2000
Published online: Nov 1, 2001
Published in print: Nov 2001
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