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Currently, most types of bridges on highways are reinforced concrete structures made with both conventional and prestressed reinforcement. Reinforced concrete bridges are affected by many negative factors that lead to degradation of material properties and loss of bearing capacity of superstructures. This requires rebuilding or strengthening bridges. Strengthening is a tool to extend the life cycle of building structures such as bridges. Existing studies focused on strengthening issues are aimed at maximizing this period, which is why the proposed solutions are long in time and difficult in terms of labor intensity. The purpose of this article is to propose and justify rapid methods for strengthening reinforced concrete bridges and overpasses as the most massive types of bridges. As a result, two main types of strengthening are proposed: rolling profile elements and bracing systems. And one and the second type are calculated justified, which is given in the article. In addition, the main schemes developed by the author are given. It has been determined that the proposed methods are very effective, and can be used in emergency situations or other cases that require minimizing the work time while increasing the load-bearing capacity.

  • Ссылка в интернете
  • DOI
  • Дата создание в систему UzSCI 22-04-2024
  • Количество прочтений 313
  • Дата публикации 30-09-2023
  • Язык статьиIngliz
  • Страницы14-26
English

Currently, most types of bridges on highways are reinforced concrete structures made with both conventional and prestressed reinforcement. Reinforced concrete bridges are affected by many negative factors that lead to degradation of material properties and loss of bearing capacity of superstructures. This requires rebuilding or strengthening bridges. Strengthening is a tool to extend the life cycle of building structures such as bridges. Existing studies focused on strengthening issues are aimed at maximizing this period, which is why the proposed solutions are long in time and difficult in terms of labor intensity. The purpose of this article is to propose and justify rapid methods for strengthening reinforced concrete bridges and overpasses as the most massive types of bridges. As a result, two main types of strengthening are proposed: rolling profile elements and bracing systems. And one and the second type are calculated justified, which is given in the article. In addition, the main schemes developed by the author are given. It has been determined that the proposed methods are very effective, and can be used in emergency situations or other cases that require minimizing the work time while increasing the load-bearing capacity.

№ Имя автора Должность Наименование организации
1 Andrei B.. PhD, associate professor St. Petersburg Polytechnic University of Peter the Great
№ Название ссылки
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2 2. Sagatov B.U.; Shodmonov A.Yu.; Aliyev M.R.; Djurayev U.U. Review of strengthening reinforced concrete beams using CFRP laminate. European Science Review. 2016, № 9-10. p. 213-215.
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4 4. Shendrik V.A. Structural evaluation of reinforced concrete column with composite GFRP shell - a structural element of bridge pier. Russian Journal of Building Construction and Architecture. 2021, № 2 (50). p. 74-84.
5 5. Klusáček L.; Nečas R.; Požár M.; Pěkník R.; Svoboda A. Transverse prestressing and reinforced concrete as the key to restoration of masonry arch bridges. Engineering Structures. 2021, Т. 245. p. 112898.
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21 21. Utility Model Patent RU 198773 from 28.07.2020. Strengthening design of the ribbed reinforced concrete beam of the road bridge superstructure.
22 22. Utility Model Patent RU 200078 from 05.10.2020. The design of the bracing strengthening of the superstructure reinforced concrete beam of the operated road bridge.
23 23. Utility Model Patent RU 201851 from 24.05.2021. Strengthening design of the I-beam reinforced concrete beam of the road bridge superstructure.
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