Methodological provisions for determining the main parameters of the organisation of the transportation process during the introduction of cars with increased axial and linear load

Introduction. One of the ways to increase the traffic-carrying capacity of railway lines is increasing the amount of cargo carried in cars, while taking into account the inevitable increase in the axial and linear load of the car. The decision to use cars with increased axial load should be based on an assessment of their technical and economic efficiency in comparison with the innovative and widely used open-box wagons with a load of 25 tonnes per axle. When assessing the economic efficiency of such cars, it is required to consider their impact on changes in the parameters of the organisation of the transportation process.
Materials and methods. Based on the presented initial data on the estimated predicted freight flow, the numerical values of the parameters of the transportation process were determined when introducing 8- and 4-axle (27 t/axle) open-box wagons. When determining the increase in the traffic-carrying capacity, its change due to an increase in the net mass of the train and a change in the total number of trains is taken into account. The calculation was made accounting for the increase in traction in proportion to the increase in the gross mass of the 8- and 4-axle (27 t/axle) open-box wagon trains on the existing infrastructure.
Results. The authors have developed methodological provisions to determine the numerical values: an increase in the traffic- carrying capacity, the required inventory fleet of cars and the available locomotive fleet in the context of the introduction of new 8- and 4-axle (27 t/axle) open-box wagons.
Discussion and conclusion. The article is theoretical and is devoted to calculation mechanisms and methodological issues. The results of the study may be applied to the ranges of the Russian Railways network, in particular, to solve complex issues of increasing the traffic-carrying capacity of the Eastern range.

1. Bogdanov V. M. Ispol'zovanie gabaritnykh vozmozhnostey seti dlya povysheniya provoznoy sposobnosti [Using the overall network capabilities to increase the carrying capacity]. Uvelichenie gabaritov i povyshenie pogonnykh nagruzok gruzovykh vagonov [Increasing the dimensions and linear loads of freight cars]. Coll. papers, ed. by V. M. Bogdanov. Moscow: Transport Publ.; 1983. P. 4–14. (Proceedings of VNIIZhT; issue 660). (In Russ.).

2. Gruzovye vagony zheleznodorozhnoy kolei 1520 mm: al'bom-spravochnik: 002I-2009 PKB TsV [Freight wagons of the 1520 mm railway gauge: reference album: 002I-2009 PKB TsV]. Moscow; 2009. 727 p. (In Russ.).

3. Granovskaya G. A., Murzin R. V., Suslov O. A. Otsenka effektivnosti ekspluatatsii gruzovykh vagonov s uluchshennymi tekhnicheskimi kharakteristikami dlya OAO «RZhD» na osnove provedeniya ispytaniy [Performance evaluation of operating freight cars with improved technical characteristics for JSC “Russian Railways” on the testing basis]. Vestnik Nauchno-issledovatel'skogo instituta zheleznodorozhnogo transporta (Vestnik VNIIZhT) = Russian Railway Science Journal. 2017;76(4):209-216. https://doi.org/10.21780/2223-9731-2017-76-4-209-216. (In Russ.).

4. Moskalenko M. A., Druz' I. B., Moskalenko A. D. Ustroystvo i oborudovanie transportnykh sredstv [Design and equipment of vehicles]. Textbook. 2nd ed. St. Petersburg: Lan' Publ.; 2022. 240 p. (In Russ.).

5. Vremennye ukazaniya po razrabotke edinykh tekhnologicheskikh protsessov raboty pod"ezdnykh putey i stantsiy primykaniya [Temporary instructions for the development of unified technological processes for the operation of access roads and junction stations]. Approved by Ministry of Railways of the USSR dated December 26, 1983. URL: http:// www.consultant.ru (access date: 20.05.2022). (In Russ.).

6. Sotnikov E. A. Intensifikatsiya raboty sortirovochnykh stantsiy [Intensification of marshalling yards]. Moscow: Transport Publ.; 1979. 239 p. (In Russ.).

7. Normy vremeni na manevrovye raboty, vypolnyaemye na zheleznodorozhnykh stantsiyakh OAO «RZhD», normativy chislennosti brigad manevrovykh lokomotivov [Time standards for shunting work performed at railway stations of Russian Railways, standards for the number of teams of shunting locomotives]. Approved by Russian Railways dated February 8, 2007. Moscow: Tekhinform Publ.; 2007. 100 p. (In Russ.).

8. Ob utverzhdenii Poryadka razrabotki i opredeleniya tekhnologicheskikh srokov oborota vagonov i tekhnologicheskikh norm pogruzki gruzov v vagony i vygruzki gruzov iz vagonov [On approval of the procedure for the development and determination of technological terms for the turnover of wagons and technological norms for loading goods into wagons and unloading goods from wagons]. Order of the Ministry of Railways of the Russian Federation dated September 29, 2003 No. 67. URL: https://base.garant.ru (access date: 16.05.2022). (In Russ.).

9. O Metodike po razrabotke i opredeleniyu tekhnologicheskikh norm pogruzki gruzov v vagony i vygruzki gruzov iz vagonov [On the Methodology for the development and determination of technological standards for loading goods into wagons and unloading goods from wagons]. Order of the Ministry of Railways of the Russian Federation dated November 10, 2003 No. 70. URL: https://base.garant.ru (access date: 16.05.2022). (In Russ.).

10. Ob utverzhdenii Pravil rassmotreniya obrashcheniy yuridicheskikh lits ili individual'nykh predprinimateley, vladeyushchikh na prave sobstvennosti ili na inom prave zheleznodorozhnymi putyami neobshchego pol'zovaniya, o primykanii stroyashchikhsya, rekonstruiruemykh, vosstanovlennykh zheleznodorozhnykh putey neobshchego pol'zovaniya k infrastrukture OAO «RZhD» ili razvitii sushchestvuyushchikh primykaniy [On Approval of the Rules for Considering Appeals from Legal Entities or Individual Entrepreneurs Owning Non-Public Railroad Tracks on the Right of Ownership or on Other Rights, on the Adjacency of Non-Public Railroad Tracks Under Construction, Reconstruction, and Rehabilitation to the Infrastructure of Russian Railways or the Development of Existing Adjacencies]. Order of Russian Railways Company dated November 24, 2021 No. 2571/r. URL: http://www.consultant.ru (access date: 20.05.2022). (In Russ.).

11. Apattsev V. I., Nekrashevich V. I. Upravlenie ekspluatatsiey lokomotivov [Management of operation of locomotives]. 3rd ed. Moscow: MGUPS Publ; 2014. 340 p. (In Russ.).

12. Gruntov P. S., Kochnev F. P., D'yakov Yu. V. et al. Upravlenie ekspluatatsionnoy rabotoy i kachestvom perevozok na zheleznodorozhnom transporte [Management of operational work and the quality of transportation in railway transport]. Moscow: Transport Publ.; 1994. 542 p. (In Russ.).