2018, Vol. 5, No. 2. - go to content...

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DOI: 10.15862/02SATS218 (https://doi.org/10.15862/02SATS218)

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Piskunov A.A., Zinnurov T.A., Berezhnoi D.V., Umarov B.Sh., Volter A.R. Experimental and numerical studies of stress-strain state of concrete structures reinforced with polymer-composite reinforcement. Russian Journal of Transport Engineering. 2018; 5(2). Available at: https://t-s.today/PDF/02SATS218.pdf (in Russian). DOI: 10.15862/02SATS218

Experimental and numerical studies of stress-strain state of concrete structures reinforced with polymer-composite reinforcement

Piskunov Alexsander Alekseevic
The ministry of transport of the Russian Federation, Moscow, Russia
Russian university of transport (MIIT), Moscow, Russia
E-mail: a.piskunov52@mail.ru

Zinnurov Tagir Almirovic
Kazan state university of architecture and engineering, Kazan, Russia
E-mail: leongar@mail.ru

Berezhnoi Dmitrii Valer’evich
Kazan federal university, Kazan, Russia
E-mail: berezhnoi.dmitri@mail.ru

Umarov Bulat Shavkatovich
Kazan state university of architecture and engineering, Kazan, Russia
E-mail: bulat.umar@gmail.com

Volter Aleksandr Rudol’fovich
Kazan state university of architecture and engineering, Kazan, Russia
E-mail: voltermail@mail.ru

Abstract. Within the scope of research, experimental and numerical studies have been carried out to evaluate the stress-strain state of concrete structures reinforced with polymer-composite reinforcement.

Results on experiments and of the numerical calculations has high reproducibility.

For comparison and analysis of the results of the experiment, two computational models were constructed in the «LIRA-CAD» and «ANSYS» software. The numerical model of the prestressed beam, created in the «ANSYS» software, obtained good consistency with the beam test results, deviations are no more than 5 percent. However, the model requires refinement for a more accurate description of the deformation process, because during the process of deformation of reinforcement a partial slippage of the reinforcement inside concrete occurs, especially this phenomenon is characteristic of the end sections of the beams. Therefore, it is necessary to take into account the contact interaction between the reinforcement and concrete, and the magnitude of the forces of breaking bonds between them is determined from the numerical experiment, comparing the results with the experimental data.

Results of the researches show that prestressing of polymer-composite reinforcement decreases the deformability of beams by reducing the deflections by more than 4 times. Concrete structures reinforced with pre-stressed polymer-composite reinforcement can be successfully used in flexural members of bridges or other structures in case of exact calculations. Results of researches made by other authors show that polymer reinforcement provides good exploitation of structures because of positive features of polymers such as oxidation resistance, absence of electrical conductivity, high axial tensile strength, low weight.

Keywords: polymer composite reinforcement; concrete structures; flexural members; pre-stressing; destruction; experiment; numerical simulation

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