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2020 4

Main subjects

  • Transport

  • Computer science and control

  • Safety of human activity

  

Abstracts

E.P. Korol'kov
Mathematical model of fault in the level of rail lines and gauge

The article presents a mathematical model of a railway track the rail line of which have significant deviations from the specification, but in general, the track meets the standards of deviations in the gauge and track lining.
Keywords: gauge, degree of deviation, rail line, mathematical model, gauge narrowing, gauge widening, amplitude, phase

D.G. Vasilchenkova, A.S. Golubev, M.Yu. Zvyagin, A.S. Vasiliev
DSRC-based traffic congestion detection model

The article deals with the problem of determining the road traffic local density using the dedicated short-range communication (DSRC) technology. An algorithm for calculating quantitative criteria detecting the road congestion situation is proposed. A mathematical model for solving the problem, the description and results of the experiment based on the SUMO (Simulation of Urban Mobility) road traffic simulator are given.
Keywords: intelligent transport systems, DSRC technology, traffic density, traffic congestion

A.V. Lyudagovsky, V.A. Polukhin
Justification of application of solid cylinder decomposition scheme into equivalent plate for thermal calculations in case of wheelset axle neck surfacing

The authors determined the boundary conditions for using the solid cylinder decomposition scheme into an equivalent plate when calculating thermal fields for restoring the axle boxes of car axles of wheelsets. The calculation of temperature fields spread by the action of a single ring element was carried out. The possibility of applying a given solid cylinder decomposition scheme into an equivalent plate for thermal calculations is justified.
Keywords: electromagnetic surfacing, temperature, equivalent plate, heat source

K.A. Sergeev, O.I. Sadykova
Interval estimation method for processing experimental data obtained during operation of rolling stock wheels

The article considers the possibility of using probabilistic and statistical methods of obtaining and estimating an indicator of wear intensity of the rolling surface of railway cars. This technique allows the quantitative assessment of experimental data obtained during the study. The wording of the proposal simplifying the calculation of the interval estimation of mathematical expectation was clarified.
Keywords: probabilistic methods, statistical distribution, point and interval estimates of distribution parameters

A.N. Malykh
Impact assessment of railway section technical equipment with automation systems on transportation process indicators

The article presents a methodology assessing the technical equipment of railway sections with automation systems, as well as its impact on the transportation process indicators. Based on the assessment, it is proposed to justify the decision on the choice of the modernization or replacement of automation technical means of the railway section.
Keywords: railway automation, reliability, technical equipment, capacity

A.V. Zyablov, A.I. Bykov, A.A. Petrov, S.V. Bespal'ko
Analysis of failure problem in operation of passenger cars

In this article, the analysis of the existing passenger car repair system was carried out, as well as the analysis of technical equipment failure statistics for 2019. The scientific novelty of the article is the recommendation to increase the efficiency of passenger car maintenance and repair system was made on the basis of complex analyses.
Keywords: passenger cars, technical means, repair system, car repair depots, maintenance

V.A. Kobzev, I.P. Starshov, V.M. Rudanovsky
Improvement of normative parameters of railway station arrival-and-departure tracks

The article deals with the issues of the safety on the railway station arrival-and-departure tracks. It is recommended to design the tracks with three-element concave profile to prevent the spontaneous departure of rolling stock equipped with bogies with rolling bearings outwards the useful length of tracks.
Keywords: railway stations, longitudinal profile, arrival-and-departure tracks, design standards

V.P. Sychev, A.Yu. Abdurashitov, A.V. Sycheva, Yu.N. Yurkova
Resource calculation of reinforced concrete sleepers and ballast of railway track based on modelling

The authors propose the models describing their deformation changes with a resource estimation based on the data obtained during the actual operation of sleepers and ballast of the railway track. The reinforced concrete sleeper is presented as a composite material with features caused by the joint operation of reinforcement and concrete and strain anisotropy.
Keywords: railway track, modelling, concrete, sleeper, ballast, resource, deformation

L.A. Baranov, N.V. Pershin
Optimization of approach time of liquefied natural gas tanker to confined water entrance according to minimum loss criterion

The article presents the method of optimal timing of approach of the liquefied natural gas tanker (LNG-tanker) to the entrant point into the confined waters according to the criterion of minimum losses from the downtime of the liquefied natural gas carrier and the evaporation of liquefied natural gas from the liquefied natural gas plant reservoirs. The method is based on the method of optimum nominal value and is recommended for use in automated systems for controlling the transportation of liquefied natural gas.
Keywords: liquefied natural gas, LNG-tanker, optimum nominal method, automated control systems

L.N. Ivankova, I.V. Simachkova, T.G. Kuznetsova
Design features of rail district yards and berthage in the port

The article considers the basic principles of the arrangement of facilities and the calculation of track development capacity of the most important elements of the seaport - the rail district yards and the berthage. The proposed calculation method will make to smooth out the uneven arrival of car traffic volume and significantly increase the capacity of infrastructure elements.
Keywords: arrangement of facilities in seaports, determination of track development capacity, rail district yards, berthage

S.V. Shvetsova, A.V. Shvetsov
Safety aspects of unmanned aerial vehicle operation in transport infrastructure

The analysis of factors affecting the operation safety of unmanned aerial vehicles over the territory of transport infrastructure facilities was carried out. Principles and conditions ensuring the safety of unmanned aerial vehicle operation at transport infrastructure facilities are proposed.
Keywords: unmanned aerial vehicle (UAV), transport infrastructure facility, operation, safety

A.I. Safronov
Analysis of capabilities and performance of single-page web applications based on the Vue.js framework with large number of graphic objects

The article analyzes the performance of web applications in comparison with similar desktop applications using the example of problem-solving of Julia fractal construction. The author justifies the necessity to develop a browser version of the Automated System for the construction of planned schedules for underground passenger train operation.
Keywords: planned schedule of passenger train operation, underground, information technologies, Vue.js, analysis, promptitude, computer graphics

V.E. Burak, V.A. Aksyonov
Special assessment features of working conditions in urban and industrial agglomerations

Conducting a special assessment of working conditions according to the current legislation in urban and industrial agglomerations the anthropogenic background of harmful and dangerous factors making a negative impact on the health of workers is not taken into account. To solve this problem, it was proposed to amend the decree of the Government of the Russian Federation on the list of jobs requiring a special approach to identify harmful and dangerous production factors.
Keywords: urban and industrial agglomerations, special assessment of working conditions, identification of harmful factors

V.S. Kosyakin, A.M. Zavyalov
Study of individual risk impact on railway worker behaviour

Using the methods of Schubert, Shmelyov and Kettell the researches have been carried out to determine the personal relationship of risk to the safe and dangerous behaviour of the individual, as well as the impact of the emotional characteristics of the workers on the professional activities. The results of this study are shown on the example of the structural divisions of the Central Directorate of Infrastructure (a branch of JSC "Russian Railways") located in an unacceptable risk zone.
Keywords: individual risk, injuries, human factor, railway transport

A.I. Shevchenko, V.V. Denisov
Analysis and state estimate of functional subsystem of emergency management in railway transport

The article presents the analysis and state estimate of the functional subsystem of emergency management (emergency prevention and response) in the railway transport of the Unified State Emergency Prevention and Response System (RSChS) based on the results of its operation in 2019.
Keywords: transportation process, stability, reliability, emergency risks, risk management, state estimate matrix

A.A. Pazukha
Occupational risk analysis during maintenance and repair of contact network devices

The article presents the statistical data analysis of injury of contact network electricians on the Russian railways. The analysis of working conditions on harmful (dangerous) factors of the contact network electrician workplace was carried out. The author determined the main dangerous situations and risks associated with the repair and maintenance of the contact network devices. The individual risk of employee death during the repair and maintenance of contact network was evaluated. The further research directions for reducing the individual risk of death of contact network employees were identified.
Keywords: individual death risk, contact network, dangerous situations, occupational labour safety, psychophysiological examination, working conditions, contact network electrician

O.S. Sachkova, V.V. Samoylov
Environmental and occupational safety issues in coal transportation by rail

The article considers the problems related to bulk cargo transportation, the influence of dust formation on the health of workers and the environment. The authors propose the measures aimed at the prevention of the dust formation during the bulk cargo loading and unloading operations.
Keywords: ecology, occupational safety, transportation, coal dust, loading and unloading operations