Articles published in the issue 1, 2019

Support systems for decision-making in managing the reliability of track and transport machines

Keywords: railway track machines, risk, decision-making systems, reliability.

Grinchar Nikolai — Ph.D. of economics, professor assistant at the Department of Information Systems of the Digital Economy of the Russian University of Transport (MIIT). Moscow, Russia. E-mail: navydragon@inbox.ru

Abstract. The article discusses some aspects of development and functioning of decision support systems in the field of operation of track machines are considered. The structure and basic algorithms of operation of such systems are presented.

The System of Concrete Sleepers Automatic Test

Keywords: concrete sleeper, geometric parameters, measurements, 2D scanners, tension forces, concrete consolidation by vibration, curing.

Krasnov Oleg — Ph.D., the Head of Track and Special Rolling Stock Department of Joint Stock Company “Scientific-Research and Design-Technology Institute of Rolling Stock” (JSC “VNIKTI”). Kolomna, Russia.

E-mail: vnikti@ptl-kolomna.ru

Ushanov Andrei — the Head of Control Systems Automation Laboratory of Joint Stock Company “Scientific-Research and Design-Technology Institute of Rolling Stock” (JSC “VNIKTI”). Kolomna, Russia. E-mail: vnikti@ptl-kolomna.ru

Abstract. Joint development of JSC “VNIKTI” and JSC “BET” in the sphere of implementation of an automated system for concrete sleepers geometric parameters control, a system for control of spring-packets tension force, parameters of concrete consolidation on vibrating tables, control of temperature and isothermal process of sleepers thermal wet processing, automation of reinforced concrete strength control system is presented. A system of metal mold identification, based on RFID-technology, is developed.

Analysis of load-carrying capacity on strength of reinforced concrete span structures

Keywords: reinforced concrete structures, bridges, loading capacity, classes of loads, dynamic coefficient.

Kondratov Valery — Ph.D., Head of Department of tests of bridges and structures Joint-stock company «Bridge research Institute». Russia, Saint-Petersburg. E-mail: imostov@yandex.ru

Rupasova Inna — Ph.D., leading researcher, company «Bridge research Institute». Russia, Saint-Petersburg.

E-mail: ruinna@yandex.ru

Abstract. The article analyzes the possibility of passing a rolling stock with an axle load of 27 tons on reinforced concrete bridges of The Russian railway network.

The condition for the passage of train loads on the bridge is a sufficient load-carrying capacity of its bearing structures.

The authors present the results of assessing the load capacity of reinforced concrete superstructures, built according to the norms of the first half of the twentieth century, expressed in the classes of load capacity of bridge structures. As a reference load in calculating the classes of the vehicles was taken to be H1 and C1. The article analyzes the bearing capacity of reinforced concrete bridge superstructures, calculated on the Guidelines for determining the load capacity of reinforced concrete bridge superstructures, published in 1989, and the new version of the Guidelines, approved in 2015 for experimental use. On the basis of experimental studies, the reduction of the standard value of the coefficient of dynamics to train loads in the new version of the Manual is justified. The analysis showed that for a more correct assessment of the conditions for the passage of rolling stock on bridges, it is necessary to calculate the load capacity of the operated reinforced concrete superstructures in accordance with the new edition of the Manual 2015.

In case of laying on bridges of the jointless way it is offered to reduce size of the coefficient of dynamics entered to train loadings at their classification.

The article specifies the factors limiting the possibility of passing on bridges with riding on the ballast of rolling stock with increased axial loads.

About the third stage of implementation of continuous welded rail

Keywords: continuous welded rail, strength of rails, stability of the track, technical instructions, fixing temperature.

Novakovich Vasily — D.Sci, Professor, Rostov State Transport University (RSTU), Chair «Railway and track facilities». E-mail: kgv_pph@rgups.ru

Karpachevsky Gennady — Ph.D., Rostov State Transport University (RSTU), head of the department «Railway and track facilities», associated Professor.

E-mail: kgv_pph@rgups.ru

Zalavsky Nikolai — Ph.D., Rostov State Transport University (RSTU), Chair «Railway and track facilities», associated Professor. E-mail: kgv_pph@rgups.ru

Zubkov Evgeny — Ph.D., Rostov State Transport University (RSTU), Chair «Railway and track facilities», associated Professor. E-mail: kgv_pph@rgups.ru

Abstract. This article describes the third phase of implementation of continuous welded rail on domestic railways, successes and failures noted.