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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Mirsayapov Ilshat Talgatovich, doctor of technical sciences, associate professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Valiev Azat Tagirovich, engineer, JS «Kazanski Giproniiaviaprom named B.I Tilhomirova», Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Title of the articleStudy of the stress-strain state of steel reinforced concrete beams of the new type railway bridges
Abstract.Problem statement. When designing steel reinforced concrete railway bridges over the carriageway, there is often a question of limiting the height of the structure due to the fixed elevation of the bottom of the bridge. In order to achieve the required strength of such structures, it is necessary to increase the thickness of walls and flanges of the steel part of the beam while the working height remains unchanged, which leads to considerable overconsumption of metal. One way of solving this issue could be the use of composite beams of a new type, where the steel I-beam is partially brought into the concrete of the compressed zone. The study is aimed at determining the stress-strain state of steel reinforced concrete beams of the new type on the basis of numerical experiments. The tasks of the study are computer modeling of the deformation and fracture process of the calculated models and a comparative analysis of the results. Results. Numerical modeling has been used to reveal the spatial operation of steel reinforced concrete structures. A numerical experiment was performed using the ANSYS software package in the Workbench shell. The computational model was corrected according to the results of in-situ tests by other authors. According to the results of the calculation, the deformations and stresses in the beam were obtained. A comparative calculation found that taking into account the true cross-section of the model increases the load-carrying capacity of the structure by 10%. Conclusions. The significance of the obtained results for the construction industry lies in the fact that they allow estimating more accurately the bearing capacity of the proposed new type of steel-reinforced concrete beams section. The results of the study can also be used for the introduction of new types of beams in Russian standards of steel reinforced concrete design and development of new methods of calculation of such structures.
Keywords.steel reinforced concrete structures; numerical experiment; ANSYS; stress-strain state; railway bridge
For citations:Mirsayapov Ilshat T., Valiev A.T. Study of the stress-strain state of steel reinforced concrete beams of the new type railway bridges // News KSUAE. 2023. №1 (63), p. 31-42, DOI: 10.52409/20731523_2023_1_31, EDN: ECDUWC


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