MODELING OF THE BEHAVIOR OF REINFORCED CONCRETE ELEMENTS, STRENGTHENED IN THE TENSIONED ZONE, UNDER THE ACTION OF A LONG-TERM LOAD
Article Sidebar
Main Article Content
Abstract
This article provides suggestions for improving the method for analysis of the parameters of the stress-strain state of bent reinforced concrete elements, strengthened in the tension zone, taking into account the effects of concrete creep under a long-term load. The general non-linear deformation model for structural analysis of reinforced concrete elements under the combined action of bending moments and longitudinal forces is taken as a basis, using a mathematical description of the deformation diagrams of concrete and reinforcement. The proposed model makes it possible to take into account the effects of changes in deformations in concrete under the action of a long-term load. Experimental verification showed a satisfactory convergence of the results of the analysis by the proposed method with the experimental data.
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
Lazovskii, D.N., Glukhov, D.O. & Lazovskii, E.D. (2021). Obshchii metod rascheta prochnosti i deformatsii na osnove nelineinoi deformatsionnoi modeli koso szhatykh kolonn, usilennykh zhelezobetonnoi oboimoi [General method based on a nonlinear defor-mation model for strength and deformations analysis of eccentrical compressed concrete columns, strengthened with a reinforced concrete section enlargement]. Vestn. Polots. gos. un-ta. Ser. F, Str-vo. Prikladnye nauki [Vestnik of Polotsk State University. Part F. Constructions. Applied Sciences], (16), 72–79. (In Russ., abstr. in Engl.).
Lazovskii, D.N. (1998). Usilenie zhelezobetonnykh konstruktsii ekspluatiruemykh stroitel'nykh sooruzhenii. Novopolotsk: Polots. gos. un-t. (In Russ.).
Karpenko, N.I., Mukhamediev, T.A. & Petrov, A.N. (1986). Iskhodnye i transformirovannye diagrammy deformirovaniya betona i armatury. In Napryazhenno-deformirovannoe sostoyanie betonnykh i zhelezobetonnykh konstruktsii: sb. nauch. tr. (7–25). Moscow: NIIZhB. (In Russ.).
Karpenko, N.I., Travush, V.I., Karpenko, S.N., Petrov, A.N., Chepizubov, I.G., Eryshev, V.A., … Yarin, L.I. (2017). Staticheski neopredelimye zhelezobetonnye konstruktsii. Diagrammnye metody avtomatizirovannogo rascheta i proektirovaniya. Moscow: M-vo str-va i zhilishchno-kommunal'nogo khoz-va Rossiiskoi Federatsii. (In Russ.).
Lazovskii, D.N., Tur, V.V., Glukhov, D.O. & Lazovskii, E.D. (2021). Uchet polzuchesti i usadki betona po SP 5.03.01-2020 pri raschete zhelezobetonnykh konstruktsii na osnove deformatsionnoi raschetnoi modeli [Creep and shrinking of concrete accounting according to SP 5.03.01-2020 when analysis of reinforced concrete structures based on deformational analytical model]. Vestn. Brestskogo gos. tekhn. un-ta [Vestnik of Brest State Technical University], (2), 7–12. (In Russ., abstr. in Engl.).
Yashin, A.V. (1984). Metodicheskie rekomendatsii po opredeleniyu osnovnykh mekhanicheskikh kharakteristik betonov pri kratkovremen-nom i dlitel'nom nagruzhenii. Moscow: NIIZhB. (In Russ.).
Aleksandrovskii, S.V. & Solomonov, V.V. (1975). Metodicheskie rekomendatsii po issledovaniyu polzuchesti i usadki betona. Moscow: NIIZhB. (In Russ.).
Bondarenko, V.M. & Bondarenko, S.V. (1982). Inzhenernye metody nelineinoi teorii zhelezobetona. Moscow: Stroiizdat. (In Russ.).
Makarenko, L.P. (1989). Izmenenie fiziko-mekhanicheskikh svoistv betonov pri szhatii i rastyazhenii pri povtornykh nagruzheniyakh. Beton i zhelezobeton, (2), 38–40. (In Russ.).