To the Definition the Deflections of Flexible Non-centrally Compressed Reinforced Concrete Struts Strengthened in the Transverse Direction with Composite Materials
https://doi.org/10.22227/2949-1622.2023.2.32-41
Abstract
An analysis of the calculation methods found in the normative literature on strengthening reinforced concrete structures with composite materials arranged in the transverse direction by the method of wrapping structures showed that there is no calculation method for the second group of limit states.
The Code of Rules 164.1325800.2014 does not consider options for strengthening flexible compressed reinforced concrete structures, with the arrangement of composite materials in the transverse direction, introducing restrictions to the dimensions of structures. However, our research suggests the opposite. In this paper, experimental values of deflections of reinforced concrete struts in the transverse direction by composite materials, characteristics and testing methods of prototypes are given. The results of the theoretical calculation of deflections are presented and, based on the comparison of experimental and theoretical values of deflections, an algorithm for calculating the second group of limit states was developed.
About the Authors
D. R. Mailyan
Don State Technical University
Russian Federation
Russian Federation
Dmitry R. Mailyan, Doctor of Technical Sciences, Professor, Head of the Department of Reinforced Concrete and Stone Structures
Scopus: 6505969367
344000, Rostov-on-Don, Gagarin Square, 1
S. V. Georgiev
Don State Technical University
Russian Federation
Russian Federation
Sergey V. Georgiev, Candidate of Technical Sciences, Associate Professor of the Department of Reinforced Concrete and Stone Structures
Scopus: 57189056917
344000, Rostov-on-Don, Gagarin Square, 1
References
1. Mukhamediev T.A. Design of reinforcement of reinforced concrete structures with composite materials. Concrete and reinforced concrete. No. 3 2013. Pp. 6-8.
2. Chernyavsky, V.A., Axelrod E.Z. Strengthening reinforced concrete structures with composite materials. Zhilishchnoe stroitel'stvo. 2003. No. 3. Pp. 15-16.
3. Ustinov B.V., Ustinov V.P. Study of the physical and mechanical characteristics of composite materials (CPM). Izvestiya vuzov. Construction. 2009. No. 11-12. Pp.118-125.
4. Design and construction of building structures with fiber-reinforced polymers. CSA S806-12. Mississauga, Ontario, Canada: Canadian Standards Association (CSA); 2012.
5. Mailyan D.R., Polskoy P.P. Georgiev S.V. Properties of materials used in the study of the work of reinforced concrete structures. Engineering Bulletin of the Don, 2013, No. 2 (25).
6. Shilin A.A., Pshenichny V.A., Kartuzov D.V. Strengthening reinforced concrete structures with composite materials. Moscow: Stroyizdat. 2004. 144p.
7. Khayutin Yu.G., Chernyavsky V.L., Axelrod E.Z. The use of carbon plastics to strengthen building structures. Concrete and reinforced concrete. 2001. No. 6 S. 17-20.
8. Pinajyan V.V. On the issue of strengthening reinforced concrete structures. Construction industry. - 1948. - No. 3 - Pp. 14-17.
9. Teryanik V.V., Biryukov A.Yu. Results of experimental studies of the strength and deformability of compressed reinforced elements of reconstructed buildings. Bulletin of the South Ural State University. Series: Construction and architecture. 2009. No. 35 (168).
10. Benzaid R., Mesbah H.A., Amel B. Experimental investigation of concrete externally confined by CFRP composites. 5th International Conference on Integrity-Reliability-Failure (IRF). Inegiinst engenharia mecanica e gestao industrial, 2016. pp. 595-602.
11. Kostenko A.N. Strength and deformability of centrally and eccentrically compressed brick and reinforced concrete columns reinforced with carbon and fiberglass. Abstract. diss. cand. tech. Sciences. Moscow. 2010. 26 p.
12. Podnebesov, P. G. Results of studies of the strength and deformability of reinforced concrete columns reinforced with clips. Urban planning, reconstruction and engineering support for the sustainable development of cities in the Volga region. 2015. Pp. 42-47.
13. Onufriev, N.M. Strengthening reinforced concrete structures of industrial buildings and structures. - Moscow: Stroyizdat - 1965. 342 p.
14. Aksenov V.N., Aksenov N.B., Blagoz A.M., Khutyz A.M. Study of the work of compressed reinforced concrete elements from high-strength concrete. New technologies. 2012. No. 4. Pp. 32-35.
15. Aksenov V.N., Mailyan D.R., Blagoz A.M., Khutyz A.M. Features of the calculation of reinforced concrete columns from high-strength concrete according to standard methods. New technologies. 2012. No. 4. Pp. 36-43.
16. Polskoy P.P., Georgiev S.V. Influence of various options for external composite reinforcement on the rigidity of flexible compressed elements. Engineering Bulletin of the Don, 2017, No. 4 (47).
17. Polskoy P.P., Mailyan D.R., Georgiev S.V. Strength and deformability of flexible reinforced racks at large eccentricities. Scientific Review. 2014. No. 12-2. Pp. 496-499.
18. Mailyan D.R., Polskoy P.P. Georgiev S.V. Properties of materials used in the study of the work of reinforced concrete structures. Engineering Bulletin of the Don. 2013. No. 2 (25). URL:ivdon.ru/ru/magazine/archive/n2y2013/1673
19. Mailyan D.R., Polskoy P.P., Georgiev S.V. Framework design and test schemes for experimental poles reinforced with carbon fiber. Scientific Review. 2014, No. 10-3. Pp. 667-670
20. Mailyan D.R., Polskoy P.P., Georgiev S.V. Techniques for strengthening with carbon fiber and testing short and flexible racks. Scientific Review. 2014. No. 10-2. Pp. 415-418.
21. Polskoy P., Georgiev S., Muradyan V., Shilov A. The deformability of short pillars in various loading options and external composite reinforcement. E3S Web of Conferences. 2018. P. 02026.
22. Polskoy P., Mailyan D., Georgiev S., Muradyan V. The strength of compressed structures with CFRP materials reinforcement when exceeding the cross-section size. E3S Web of Conferences. 2018. P. 02060
23. Georgiev S. V. Flexible eccentrically compressed reinforced concrete posts reinforced with composite materials. Cand. diss. tech. Sciences, Rostov-on-Don, 2020. 201p. URL:dissercat.com/content/gibkie-vnetsentrenno-szhatye-zhelezobetonnye-stoiki-reinforced-kompozitnymi-materialami
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For citations:
Mailyan D.R., Georgiev S.V. To the Definition the Deflections of Flexible Non-centrally Compressed Reinforced Concrete Struts Strengthened in the Transverse Direction with Composite Materials. Reinforced concrete structures. 2023;2(2):32-41. (In Russ.) https://doi.org/10.22227/2949-1622.2023.2.32-41
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