CONCRETE CREEP THEORY MODELS AND THEIR FINITE-ELEMENT IMPLEMENTATION
Abstract
The finite-element method for the plane problem solution of the concrete creep theory with regard to aging is developed. The expressions based on the formulas for creep values proposed by N. K. Arutyunyan and S. V. Alexandrovsky are used as the hereditary functions of the second kind. The friendly programming expressions for the concrete relaxation kernels are obtained by the symbolic processor. The durable step-by-step algorithm and the appropriate software for performing accounting under the variable loading with regard to the fast incident creep at the initial load and partial reversibility of the creep flow under deloading are developed. The verification of the developed software is carried out on the base of the available experimental data on the creep of the directly compressive prismatic concrete rods and bending concrete beams.
About the Authors
Petr Pavlovich Gaydzhurov
Don State Technical University.
Russian Federation
Russian Federation
Elvira Rashidovna Iskhakova
South-Russian State Technical University.
Russian Federation
Russian Federation
References
1. Alexandrovskiy, S.V. Raschet betonnykh i zhelezobetonnykh konstruktsiy na izmeneniya temperatury i vlazhnosti s uchetom polzuchesti. [Concrete and reinforced concrete creep structural analysis for temperature and moisture variations.] Moscow: Stroyizdat, 1973, 432 p. (in Russian).
2. Arutyunyan, N.K. Nekotoryye voprosy teorii polzuchesti. [Some issues of creep theory]. Moscow: Gostekhteoretizdat, 1952, 323 p. (in Russian).
3. Ulitskiy, I.I. Teoriya i raschet zhelezobetonnykh sterzhnevykh konstruktsiy s uchetom dlitelnykh protsessov. [Theory and analysis of long-term reinforced concrete framed structures.] Kiev: Budivelnyk, 1976, 347 p. (in Russian).
4. Prokopovich, I.E., Zedgenidze, V.A. Prikladnaya teoriya polzuchesti. [Applied creep theory.] Moscow: Stroyizdat, 1980, 240 p. (in Russian).
5. Gaidzhurov, P.P. Konechno-elementnoye resheniye zadach teorii polzuchesti. [Finite element problem solution of creep theory.] Stroitelnaya mekhanika i raschet sooruzheniy, 2006, no. 1, pp. 52–58 (in Russian).
6. Gaidzhurov, P.P., Iskhakova, E.R. Bileynyy chetyrekhuzlovoy konechnyy element dlya resheniya dvumernykh zadach teorii uprugosti. [Bilinear 4-noded finite element for creep bidimensional problem solution.] Izvestiya vuzov. Severo-Kavkazskiy region. Tekhnicheskiye nauki, 2011, no. 4, pp. 7–13 (in Russian).
Review
For citations:
Gaydzhurov P.P., Iskhakova E.R. CONCRETE CREEP THEORY MODELS AND THEIR FINITE-ELEMENT IMPLEMENTATION. Vestnik of Don State Technical University. 2012;12(7):99-107. (In Russ.)
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