Articles published in the issue 6, 2018

More attention to grinding and milling of the rails in the track!

Keywords: rail grinding, damaged metal layer, rail milling, rail maintenance technology, combination of wheel and rail profiles.

Abdurashitov Anatolii — Ph.D., technical expert of JSC «Railway research institute» (JSC «VNIIZHT»).

E-mail: abdran@yandex.ru.

Abstract. Technical progress in railway transport is associated with an increase in the operational stability of the main elements of the track’s upper structure — railway rails. Inadequate performance requires frequent replacement, causes delays in the movement of trains and creates significant problems. The program of innovative development of OJSC «Russian Railways» for the period until 2020 provided «the use of rails with a resource of up to 1.5 billion tons of gross and the optimal profile». In the decision of the railway commission in 2017, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews, reviews. In this regard, it is necessary, relying, among other things, on the experience of foreign railways, to increase the scale of application of rail grinding in track.

Optimization of Quality of Welded Connection Evaluation Method

Keywords: continuous welded rail, rail welding methods, flash-butt welding, combined method of flashing, quality control of welded joints, rejection criterion.

Rezanov Victor — Ph.D., rail welding section сhief of Central Direction of Track Repair — affiliated institution of JSC «Russian Railways». Moscow, Russia. E-mail: swel@ngs.ru

Voronin Nikolai — D.Sci., professor of the Department of «Transport machine building and rolling stock repairs», Russian University of Transport (MIIT). Moscow, Russia. E-mail: profvnn@mail.ru

Seidakhmetov Nurlan — postgraduate student of the Department of «Transport machine building and rolling stock repairs»,Russian University of Transport (MIIT). Moscow, Russia.

E-mail: nurlan.seidakhmetov@yandex.ru

Abstract. Metallurgical plants of JSC «EVRAZ Consolidated West-Siberian Metallurgical Plant», PAO «Mechel» have established the production of 100-meter rails of category DT350, which required the improvement of welding technological processes and quality control of the resultant welded joint. To this end, JSC «Russian Railways» has reconstructed rail welding plants and has developed new technical specifications allowing welding rails with a length from 25 to 100 m. However, in 2017, the violation of welding technology and non-compliance with the requirements of the Russian Railways company standard 1.08.002 -2009 led to cutting of 3,465 joints due to the presence of impermissible defects.

To eliminate defective welded joints in the rails manufacture, to pass to new quality control criteria of the welded joint, and to weld control samples to the welded rail regularly, creating conditions for the repeatability of the main welding parameters.

Stabilization of width of a track in curves on rail fastening АРС

Keywords: ARS, rail bond, small radius curves, track gauge, wear, angled corner, underlay gasket, combined rigidity, calculations, research

Kuznetcov Vladimir — Ph. D., leading researcher NII TTS RUT (MIIT). E-mail: binom154@mail.ru

Mazurenko Konstantin — Leading Specialist NII TTS RUT (MIIT). E-mail: miitkost@mail.ru

Garin Artem — engineer ICTS RUT (MIIT). E-mail: garintewa@bk.ru

Volkov Evgeniy — engineer ICTS RUT (MIIT). E-mail: bambucha-08@bk.ru

Tomilov Anton — engineer ICTS RUT (MIIT). E-mail: antonm92@mail.ru

Abstrat. The article highlights the problem of stability of track gauge in curves of small radius on fastening of ADS. The reasons for this phenomenon are described. A method of combined transverse stiffness of the path for curves of different radii is presented, variants of the APC fastening elements are presented to ensure the stability of the gauge width.

The use of monolithic polymer foamconcrete at the device of the roadbad

Keywords: polymer-cement foamconcrete, construction of embankment, railway tracks, energy absorption capacity, foam stabilization, the decrement rate of the oscillations, deeps- and frost resistance.

Sycheva Anastasia — D.Sci., Professor, Department «Special structures of RCK», Military space Academy named after A.F. Mozhaisky. Saint-Petersburg, Russia. E-mail: amsychova@yandex.ru

Solomahin Andrei — Ph.D., associate Professor, Department «Special structures of RCK», Military space Academy named after A.F. Mozhaisky. Saint-Petersburg, Russia. E-mail: solomahina@mail.ru

Kamenev Jury — postgraduate student, Department «Special structures of RCK», Military space Academy named after A.F. Mozhaisky. Saint-Petersburg, Russia. E-mail: scuto@mail.ru

Gera Vasily — Ph.D., associate Professor, the chief of faculty, Military space Academy named after A.F. Mozhaisky. Saint-Petersburg, Russia. E-mail: кotovich_vg@mail.ru

Kotovich Vitaly — Ph.D., associate Professor, Department «Special structures of RCK», Military space Academy named after A.F. Mozhaisky. Saint-Petersburg, Russia. E-mail: кotovich_vg@mail.ru

Abstract. The construction of the railway with application of polymer-cement foam concrete of different average densities. With the aim of obtaining such a foam is suggested as a polymer, use the polyvinyl acetate, and stabilizers for foam construction. This allows to increase the energy absorbing properties of the railway and its ability to damp vibratory loads from passing heavy trucks. Energy absorption capacity is evaluated by the decrement of damping oscillations d and coefficient of thermal conductivity of foam concrete λ, Wt/(m•°С).