Improving the technical condition level of the railway track

A change in the regulatory parameters in the track design and its elements, as well as a change in the technology of work, leads to a change in the nature of the interaction of rolling stock and track elements, a change in the type and characteristics of various mal-functions, especially for conditions of intensive track operation. The calculations to be done by modeling have established that for a serviceable and workable track structure, the stress safety factor in the most loaded cross-section of the rail is 1.7 with a rigid (stabilized) sub-rail base, 1.3 with a weak (soft, immediately after repair of the sub-rail base). Both with a weak and with a rigid sub-rail base, in case of destruction of the receiving sleeper or its absence, the safety margin coefficient was 0.82. Currently, given the relatively low complexity of perform-ing work with the use of adjustment pads (cards) on local sections, as well as a relatively short period of time required to perform these works, this method has become widely used to elim-inate malfunctions in the form of local subsidence, distortions, and other deviations in the position of the rail threads of the railway track in the profile. At the preliminary stage, it was found that the consequence of reducing the under-rail support platform when using adjustment pads (cards) is a decrease in the elastic modulus of the under-rail base by 7-15 % and an increase by 8-12 % fatigue processes of degradation of rail steel.

1. Grin, E. N. Factor analysis of the assessment of the state of the path / E. N. Grin, N. I. Kovalenko // Path and track economy. - 2013. - No. 1. - P. 22-23. - ISSN 0033-4715.

2. Kovalenko, N., Volkov, B., Kovalenko, A., Kovalenko, N. (2020). Budgeting Direct Costs of Track Complex of JSC “Russian Railways” in the Light of Modern Classification of Railway Lines. / In: Popovic, Z., Manakov, A., Breskich, V. (eds) VIII International Scientific Siberian Transport Forum. TransSiberia 2019. Advances in Intelligent Systems and Computing, Vol 1115. Springer Cham05 January 2020, P. 177-183. - ISBN 978-3-030-37916-2. - URL: https://doi.org/10.1007/978-3-030-37916-2_19 (date of access: 12.09.2023).

3. The methodology of classification of railway lines of JSC "Russian Railways", approved by the order of JSC "Russian Railways" dated March 04, 2015 No. 551r. - URL: https://base.garant.ru/71085892/ (date of access: 09/12/2023).

4. Assessment of the Mitigation of Consequences Resulting from Incidents at the Railway. / N. Kovalenko, V. Ponomarev, N. Kovalenko, N. Fomina, A. Kovalenko [et al.] // In: Z. Popovic, A. Manakov, V Breskich. (eds) VIII International Scientific Siberian Transport Forum. TransSiberia 2019. Advances in Intelligent Systems and Computing, vol 1115. Springer, Cham. 05 January 2020 - P. 184-194. - ISBN 978-3-030-37916-2. - URL: https://doi.org/10.1007/978-3-030-37916-2_20 (date of access: 09/12/2023).

5. The determination of the repairs of railway track considering the reliability and risk level / N. Kovalenko, E. Grin, N. Kovalenko // E3S Web of Conferences, Vol. 157 06031 (2020). Springer, 20 March 2020. - P. 92-99. - ISBN 978-3-030-18743-9. - URL: https://doi.org/10.1051/e3sconf/202015706031 (date of access: 09/12/2023).

6. Gapeenko, Yu. V. Path stabilization after deep ballast cleaning / Yu. V. Gapeenko // Path and track management. - 1997. - No. 10. - P. 13-16. - ISSN 0033-4715.

7. Track machines for straightening the railway track, compaction and stabilization of the ballast layer. Technological systems : Textbook for universities of railway transport / A. V. Atamanyuk, V. B. Bredyuk, V. M. Bugayenko et al.; ed. M. V. Popovich, V. M. Bugayenko. - Moscow : State Educational Institution "Educational and Methodological Center for education in railway transport", 2008. - 285 p. - ISBN 978-5-89035-529-4.

8. Velichko, D. V. Analysis of contamination of crushed stone ballast / D. V. Velichko, N. A. Tolstikova // Izvestiya Transsib / Omsk State University of Railway Transport. - 2016. - No. 3(27). - P. 110-117. - ISSN 2220-4245.

9. Travel cars: Textbook for universities of railway transport / S. A. Solomonov, M. V. Popovich, V. M. Bugaenko [etc.]; edited by S. A. Solomonov. - Moscow : Zheldorizdat, 2000. - 756 p. - ISBN 5-94069-007-6.

10. Resolution of the Government of the Russian Federation of November 22, 2008 No. 1734-r "Transport Strategy of the Russian Federation until 2030" (as amended by the Decree of the Government of the Russian Federation of 11.06.2014 No. 1032-r). - URL: http://static.government.ru/media/files/7enYF2uL5kFZlOOpQhLl0nUT91RjCbeR.pdf (date of access: 09/12/2023).

11. Tsvetkov, V. Ya. Conceptual Model of the Innovative Projects Efficiency Estimation / V. Ya. Tsvetkov // European Journal of Economic Studies. - 2012. - Vol. (1), No. 1. - P. 45-50. - ISSN 2305-6282.

12. Itskovich, G. M. A guide to solving problems on the resistance of materials: a textbook for higher education institutions / G. M. Itskovich, A. S. Minin, A. I. Vinokurov; Under the general editorship of L. S. Minin. - Moscow : Higher School, 2001. - 592 p. - ISBN 5-06-003494-1.

13. Perelmuter, A. V. Design models of structures and the possibility of their analysis / A. V. Perelmuter, V. I. Slivker. - The fourth edition, revised and supplemented. - Moscow : SCUD SOFT; the Association of Construction Universities; DMK Press, 2011. - 736 p. - ISBN 978-5-903683-12-3; ISBN 978-5-930938-06-7; ISBN 978-5-940747-10-9.

14. Alexandrov, A. V. Resistance of materials: Textbook. For universities / A. V. Alexandrov, V. D. Potapov, B. P. Derzhavin; Edited by A. V. Alexandrov. - 3rd ed., Revised edition. - Moscow : Higher School, 2003. - 560 p. - ISBN 5-06-003732-0.

15. Gorshkov, A. G. Resistance of materials : Text-book / A. G. Gorshkov, V. N. Troshin, V. I. Shalashilin. - 2nd ed., Revised edition. - Moscow : FIZ- MATLIT, 2005. - 544 p. - ISBN 5-9221-0181-1.

16. Abrashitov, A. A. The mechanism of splash formation in a ballast prism / A. A. Abrashitov // World of Transport. - 2015. - Vol. 13, No. 3(58). - P. 210-217. - ISSN 1992-3252.

17. Assessment of sources of contamination of the ballast layer from granite rubble and modeling of destruction and abrasion of crushed stone particles under dynamic loading / A. A. Abrashitov, A. A. Zaitsev, A. V. Semak, L. A. Shavrin, // In the collection : Modern problems of railway track design, construction and operation / Proceedings of the XIII International Scientific and Technical Conference. Readings dedicated to the memory of Professor G. M. Shakhunyants. - Moscow, 2016. - P. 184-187.

18. Bessonova, N. V. Determination of total expenses for repair and track work when providing "windows" / N. V. Bessonova // The applicant is an appendix to the World of Transport magazine. - 2010. - Vol. 8, No. 2. - P. 52-54. - ISSN 1992-3252.

19. Paramonova, N. V. Optimum for the "window" time / N. V. Paramonova // The world of transport. - 2007. - Vol. 5, No. 1(17). - P. 114-116. - ISSN 1992-3252.

20. Derzhavin, A. N. Methodology for the purpose of capital repairs of the track on the stretch / A. N. Derzhavin, N. N. Lysenko, A. V. Zamukhovsky // Path and track economy. - 2021. - No. 5. - P. 31-33. - ISSN 0033-4715.