Articles published in the issue 10, 2019
Prospects of development of the structure of the top structure of the way and its elements
Keywords: rail characteristics, maximum equivalent stresses, single-point and two-point contact-ing, standard wagon wheel, ballast stresses, deformations of the track section, intermediate rail fasteners, turnouts, track machines and mechanisms.
Lisitsyn Аndrey — JSC RZD, director of PKB I. Moscow, Russia. E-mail: email@example.com
Abstract. The analysis of domestic and foreign types of rails. The main problematic issues of im-plementation on the russian railways of rails of the type P75, including issues of interaction in the «wheel—rail» system, are considered. At the same time, the assessment of existing types of in-termediate rail fastenings is carried out. The main problems are shown when using the technolo-gy of track machines and mechanisms on the P75 rails. Estimated need to develop switches with rails P75.
Comparison of the resistance of the rails of the categories DT350 and OT350 against the growth of cracks in the rail foot
Keywords: rail foot, thermomechanical damage, rail foot defect, cargo density, tonnage operat-ing time, rail track plan, austenite-martensitic microstructure, impact strength, hardness.
Zagranichek Konstantin — laboratory Chief JSC «VNIIZhT». E-mail: firstname.lastname@example.org
Reikhart Vladimir — Ph.D., deputy laboratory Chief JSC «VNIIZhT». E-mail: email@example.com
Svetozarova Irina — Ph.D., leading researcher JSC «VNIIZhT». E-mail: firstname.lastname@example.org
Abstract. The article deals with the comparative assessment of the damage to the rail foot of dif-ferent categories of domestic and foreign production. The analysis of rail seizures on the network of JSC Russian Railways for defects related to mechanical damage to the sole was carried out using the example of 2016. A description of the experiments carried out, including the application in laboratory conditions of thermomechanical damage to the rail foot of different categories of domestic and foreign production, followed by an assessment of strength, fatigue and structural characteristics.
Realization of digital railway repair technologies
Keywords: digital technology, digital railway, track repair, BIM technology, internet of things, quality control, monitoring, control automation, control automation.
Abramov Andrei — D.Sci., Professor, Technologies of transport machine-building and exploita-tion of machines Department, Siberian Transport Universit.Novosibirsk, Russia. E-mail.ru: email@example.com
Manakov Alexey — D.Sci., Professor, Technologies of transport machine-building and exploita-tion of machines Department, Siberian Transport University. Novosibirsk, Russia. E-mail.ru: firstname.lastname@example.org
Maslov Nikolay — Ph.D., associate Professor, Lifting and transport, track, construction and road machines Department, Novosibirsk Siberian Transport University. Novosibirsk, Russia. E-mail.ru: email@example.com
Abstract. The implementation of the Digital Railroad concept is a key activity of Russian Rail-ways. Siberian State University of Communications actively implements projects of this direc-tion. Three centers of competence are formed in the SGUPS (Center for Technologies, Ma-chines and Equipment for Mechanization of Railway Repair and Maintenance; Center for Diag-nostics and Monitoring of Engineering Facilities of the Track Complex; Center for Forecasting the Development of Transport and Logistics Systems Using Simulation Modeling within the West Siberian Railway). Two of them are aimed at introducing advanced technical means and tech-nologies of the track complex. In a significant part of the projects carried out in these centers, BIM technologies and the Internet of Things on the railway have been implemented. The article discusses the most promising work: development of a quality control system for the repair and monitoring of railways using unmanned aerial vehicles, the creation of 3D models of a railway track; creation of a digital construction project (repair) for automated control systems; use of a digital project for automated control systems for ballast cutting (cleaning); development of an automated control system for the operation of special rolling stock.
Depth of defect detection by a magnetic method on high-speed rail track inspection
Keywords: rail inspection, flaw detector car, magnetic flux leakage (MFL) method, active mag-netization system, detection of defects in the rail head, longitudinal and transverse cracks.
Markov Anatoliy — D.Sci., Deputy General Designer, Head of the Department «Methods and means of nondestructive testing», Radioavionica JSC. St. Petersburg, Russia. E-mail: firstname.lastname@example.org
Antipov Andrey — Ph.D., Senior Researcher, Radioavionica JSC. St. Petersburg, Russia. E-mail: аntipоv@radioavionica.ru
Maksimova Ekaterina — Head of the nondestructive testing laboratory, Radioavionica JSC. St. Petersburg, Russia. E-mail: email@example.com
Abstract. The article shows the results of the analysis of signals from a significant set of real rail defects. The magnetic flux leakage (MFL) method often works more efficiently than ultrasonic methods. It detects defects in the rail head at depths up to 20—22 mm. Only the integrated ap-plication of methods based on different physical principles allows to ensure reliable and timely detection of dangerous defects in the rails.
Practical method for monitoring the stability of continuous welded rail
Keywords: track control, continuous rail, longitudinal force, continuous track stability, rail track buckling.
Kargapoltsev Sergey — D.Sci., Professor, Rector of Irkutsk State Transport University. Irkutsk, Russia. E-mail: firstname.lastname@example.org
Novoseltsev Petr — Ph.D., associate professor, Ulan-Ude Railway Institute, branch of Irkutsk State Transport University. Ulan-Ude, Russia. E-mail: email@example.com.
Kuptsov Yury — Senior Lecturer, Ulan-Ude Railway Transport Institute, branch of Irkutsk State Transport University. Ulan-Ude, Russia. Email: firstname.lastname@example.org.
Abstract. The natural frequency of transverse horizontal rail oscillations can be considered as a parameter characterizing the condition of the track and can be used to assess the risk of loss of stability (track buckling) of the track, which can occur as a result of simultaneous exposure to temperature, track creep and poor technical condition of the track.