To the question of justification of increasing the exploitation life of rails in the metro
https://doi.org/10.52170/1815-9265_2025_75_78
Abstract
The article considers the condition of rails that have missed the standard tonnage in the metro. The actual condition of rails has been assessed by means of in-situ inspection and diagnostics using non-destructive testing methods. The most widespread defects were defects of the first group – metal pitting and delaminations, the parameters of which turned out to be acceptable for further operation.
Based on the results of the analysis of materials provided by metro and the application of the methodology of repair assignment by ‘Russian Railways’, dependencies were obtained that describe the occurrence of defects and failures from missed tonnage. Defectivity was excluded from the evaluation factors due to insignificant influence on the assignment of continuous rail change. In turn, single rail failures influenced the determination of the rail end of life, which will occur no earlier than 10 years from the date of the study.
To verify the reliability of the obtained results, the reliability of rails in the metro railway was evaluated. In the calculation of operating time, the operating condition was corrected, thus the application of the methodology based on the reliability theory became possible in relation to the metro conditions.
By means of the calculation it was possible to determine the probability of failure-free operation and the probability of failure. The obtained result confirmed the possibility of increasing the service life of rails in metro. When comparing the average life of rails for the current year of operation and for the forecast one (in 10 years from the date of the study), this value increased significantly.
The approach based on the joint use of ‘Russian Railways’ normative documents and reliability theory with necessary adjustments taking into account the conditions of rail operation in the metro is proposed.
About the Authors
А. L. Lanis
Siberian Transport University
Russian Federation
Russian Federation
Alexey L. Lanis – Doctor of Engineering, Professor, Head of the Track and Track Facilities Department
Novosibirsk
D. A. Usov
Siberian Transport University
Russian Federation
Russian Federation
Dmitry A. Usov – Candidate of Engineering, Associate Professor of the Track and Track Facilities Department
Novosibirsk
V. A. Tarkhov
Siberian Transport University
Russian Federation
Russian Federation
Victor A. Tarkhov – Postgraduate Trainee, fifth-year student of the Transport Construction Department
Novosibirsk
References
1. Instruction on the current maintenance of railway track. Approved by the order of ‘Russian Railways’ No. 2288/r of 14.11.2016. ConsultantPlus: [site]. (In Russ.). URL: https://company.rzd.ru/api/media/resources/1503751?action=download.
2. Grechanik A. V., Zamukhovsky A. V., Naumov B. V. Vibration-absorbing fastenings for the underground. Bulletin of the Ural State University of Railway Transport. 2011;(12):62–69. (In Russ.).
3. Rules for assigning repairs of railway track. Approved by the order of ‘Russian Railways’ No. 2888/r from 17.12.2021. ConsultantPlus: [site]. (In Russ.). URL: https://www.consultant.ru/cons/cgi/online.cgi?req=doc&base=EXP&n=804210.
4. GOST R 51685–2013. Railway rails. General technical conditions. Moscow: Standardinform; 2014. 27 р. (In Russ.).
5. Zamukhovsky A. V., Semyonov E. V. Analysis of specific rail yield in the Moscow Metro. Track and Track Facilities. 2020;(5):10–12. (In Russ.).
6. Matvetsov V. I., Kebikov A. A., Syrokvash A. A. Damage analysis of non-heat-strengthened rails during operation in conditions of Minsk underground. Bulletin of the Belarusian State University of Transport: Science and Transport. 2005;(11):64–70. (In Russ.).
7. Shekhvatov A. A., Vitolberg V. G., Potapov D. A. Investigation of rails operation in curved track sections under the conditions of underground railway. Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan. 2003;(2):182–186. (In Russ.).
8. Regulations on the planned preventive maintenance of track structure, earth bed and contact rails of subways of the Union of Soviet Socialist Republics. Moscow: Transport; 1982. 28 р. (In Russ.).
9. Methodology for calculating reliability and safety indicators of track structure operation. Approved by the order of ‘Russian Railways’ No. 1508/r dated 15.06.2020. Moscow; 2020. 81 р. (In Russ.).
10. Instruction. Defects of rails. Classification, catalogue and parameters of defective and acutely defective rails. Approved by the order of ‘Russian Railways’ No. 2499/r dated 23.10.2014: (edition of 07.10.2022). Garant: [site]. (In Russ.). URL: https://base.garant.ru/70867010/.
11. Rules of technical operation of railways of the Russian Federation. Approved by the Order of the Ministry of Transport of Russia № 250 from 23.06.2022. ConsultantPlus: [site]. (In Russ.). URL: https://www.consultant.ru/document/cons_doc_LAW_422554/.
12. Zamukhovsky A. V., Pogosyan D. A. Evaluation of the underground track structure structures by reliability criteria. Track and Track Facilities. 2020;(12):15–17. (In Russ.).
13. Pogosyan D. A. Increase of the operational reliability of the sub-rail base of the metro track on the basis of the analysis of the rail track geometry: 2.9.2 Railway track, survey and design of railways. Dissertation for the degree of Candidate of Engineering. David Armenovich Pogosyan; Russian University of Transport. Moscow; 2022. 208 р. (In Russ.).
14. Velichko D. V., Sevostyanov A. A., Antereykin E. S. Assessment of rail reliability on the sections of the Trans-Siberian railway. The Siberian Transport University Bulletin. 2019;(48):5–11. (In Russ.).
Review
For citations:
Lanis А.L., Usov D.A., Tarkhov V.A. To the question of justification of increasing the exploitation life of rails in the metro. Bulletin of Siberian State University of Transport. 2025;(3):78-87. (In Russ.) https://doi.org/10.52170/1815-9265_2025_75_78
Views:
8
Email this article 