Кафедра "Колія та колійне господарство" <br> (з 2021 року ввійшла до складу кафедри "Транспортна інфраструктура")
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ENG: Department "Path and Track Facilities"
(since 2021 it has become a part of the Department of Transport Infrastructure)
(since 2021 it has become a part of the Department of Transport Infrastructure)
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Browsing Кафедра "Колія та колійне господарство" <br> (з 2021 року ввійшла до складу кафедри "Транспортна інфраструктура") by Author "Arbuzov, Maxim"
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Item Features of the Nonlinear Calculation of the Stress-Strain State of the "Rock Massif–Excavation Support" System Taking into Account Destruction(Kaunas University of Technology, Kaunas, Lithuania, 2019) Shashenko, Oleksandr; Shapoval, Volodymyr; Khalymendyk, Oleksii; Andrieiev, Volodymyr S.; Arbuzov, Maxim; Hubar, Oleksіy V.; Markul, Ruslan V.ENG: The algorithm for estimating the reliability of the results of the calculation of the stress-strain state of the “rock massif-excavation support” system, taking into account the non-linear relationship between stresses and strains, as well as the destruction of the rock, is presented. In the course of a numerical experiment, it was shown that to determine the reliability of the calculation results, it is enough to find the relative error between the maximum efforts in the lining and then the extremum (more precisely, the maximum) of the “relative error – depth of the excavation center”.Item Investigation of the Operation of the Railway Track with Reinforced Concrete Sleepers in Curved Sections with Radius R ≤ 350 m(Printing House “Technologija”, Kaunas, Lithuania, 2020) Markul, Ruslan V.; Hubar, Oleksіy V.; Arbuzov, Maxim; Andrieiev, Volodymyr S.; Tiutkin, Oleksii L.; Savyts’kyy, V.; Ganich, Ruslan Ph.ENG: The article presents the results of the research on polygon extension for laying reinforced concrete sleepers under difficult conditions (R≤350 m, mountainous terrain) with ensuring safety traffic and reliable operation of the railway track. Changes in the geometry of the track in the plane with wooden sleepers and Д0 fastener as well as reinforced concrete sleepers with СКД65-Б fastener in the curve with the radius of 350 m were investigated. The results of the research allowed to obtain: - method and algorithm for determining the tapping section of the track gauge extension on reinforced concrete sleepers in curves with radius R ≤ 350 m; - comparative assessment of the track gauge change with the use of Д0 fastener (wooden sleepers) and СКД65-Б fastener (reinforced concrete sleepers) in curves with a radius R ≤ 350 m; - factors impact on the track gauge extension under difficult operating conditions; - empirical dependence of the process of the track gauge width change and the frequency of its adjustment in the cases of СКД65-Б fastener (reinforced concrete sleepers) and Д0 fastener (wooden sleepers) use in curves with radius R ≤ 350 m; - conclusions on the probability and feasibility of concrete sleepers use under mountainous terrain conditions, including difficult operating conditions (R ≤ 350 m).Item Research of Railway Crashed Stone Use of 40 –70 mm Fraction(Kaunas University of Technology, 2018) Pshinko, Oleksandr M.; Patlasov, Oleksandr M.; Andrieiev, Volodymyr S.; Arbuzov, Maxim; Hubar, Oleksіy V.; Hromova, Olena V.; Marcul, Ruslan V.ENG: The results of the conducted researches on operating, physical and mechanical properties of crushed stone of 40-70 mm fraction are presented in the article as well as the results of the comparison of the given fraction with the fraction of 25-60 mm and determination of the former fraction usage for the ballast with the purpose of more rational fund use during railway repair works. The conducted researches of 40-70 mm fraction of crushed stone allowed receiving: – actual values of technical indices of the product and adopted technical decisions; – conformity of the product with the operating conditions as well as physical and mechanical properties during track maintenance; – ability to perform tests; – comparison of physical, mechanical and operational properties of crushed stone of 40-70 mm fraction with the crushed stone of 25-60 mm fraction.Item Study of the Interaction of the Railway Track and the Rolling Stock Under Conditions of Accelerated Movement(IOP Publishing, 2020) Hubar, Oleksіy V.; Markul, Ruslan V.; Tiutkin, Oleksii L.; Andrieiev, Volodymyr S.; Arbuzov, Maxim; Kovalchuk, O.ENG: Comprehensive studies of the interaction of the railway track and the investigated rolling stock under accelerated conditions have been carried out. The basis of the research was to obtain and substantiate the process of stress state, force interaction of the railway track and the rolling stock under conditions of accelerated movement. Introduction of the new rolling stock into continuous operation is a serious task that must be solved comprehensively. The implementation of this direction significantly affects the reliability of the elements of the railway track. Within the framework of the research, the approach was used that takes into account theoretical and experimental parts of the research using the methodology of prof. O. P. Yershkov. As a result of the studies, average stress values were established: in rails, they variate within the range 44.37...70.99 MPa; in the sleeper, they reach 0.78 MPa; in the ballast layer, they have 0.13 MPa; in the body of the subgrade, they reach 0.04 MPa, which is significantly less than the maxima allowable values. While speed change from 140 to 160 km/h, the values of the studied parameters decrease: vertical force (9.39 %), lateral forces (19.79 %); stresses in the edge of the rail flange (15.86 %); stresses in the edge of the rail head (16.67 %); stresses in the neck of the rail (8.74 %). The obtained results made it possible to form trends and recommendations on the feasibility of further increasing speeds development. At the same time, this made it possible to substantiate in more detail the operation of the railway track in the case of accelerated movement.