About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Denis S. Smirnov, candidate of technical sciences, associate professor, Kazan State University of Architecture and Engineering, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Yana A. Fomina, design engineer of 3 categories, Tatdorproekt Institute, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it |
| Title of the article | Study of the durability of reinforced concrete blocks lining tunnels on the example of the Kazan Metro |
| Abstract. | The object of the study is the lining blocks of the tunnels of the Kazan metro. The metro is a structure of the most important economic importance. Therefore, increased durability requirements are imposed on it. The durability of structures, in turn, depends on the durability of the building materials from which they are made. The purpose of the work is to assess the actual strength of concrete in the Kazan metro tunnels manufactured in different periods and to construct a kinetic curve of changes in strength over time. The objectives of the study are: the formation of a database of controlled parameters and the creation on their basis of a predictive model of changes in the characteristics of the structure during operation. Results. In the work, a function was obtained that makes it possible to predict the change in the strength of reinforced concrete blocks of the lining of the Kazan metro during operation. Analyzing the data for the 22-year period of operation, an increase in strength by 20.8% was found in relation to the design indicator. This result testifies to the positive dynamics of the durability of reinforced concrete structures and indicates their continued use in the future. Conclusions. The results of the study will allow us to draw conclusions about the most effective methods of selecting asphalt concrete from the point of view of resistance to the formation of a plasticity track. The data obtained can be used in the construction and operation of the road surface to increase its durability and stability. Conclusions. The results of the study allow us to conclude that the durability of the considered reinforced concrete lining blocks depends on the technical condition of their elements. |
| Keywords. | subway, tunnels, lining blocks, strength, concrete |
| For citations: | Smirnov D.S., Fomina Y.A. Study of the durability of reinforced concrete blocks lining tunnels on the example of the Kazan Metro // News KSUAE, 2023, № 4(66), p. 286-293, DOI: 10.52409/20731523_2023_4_286, EDN: VEUFIY |
