Theoretical assessment of the distribution of dynamic interaction forces of the "rolling stock-track" system along the length of subway railway switches
DOI:
https://doi.org/10.32703/2617-9059-2024-43-13Keywords:
railway switches, sub-rail base, stiffness, elastic modulus, elastic-dynamic track parameters, dynamic forces, dynamic deflections, stressesAbstract
One of the peculiarities for switch operation is the increased level of force interaction between the bearing elements of the switch and the rolling stock chassis, which causes increased requirements for strength, stability, reliability and durability of switches. Accordingly, to assess the strength of structures, it is necessary to know the magnitude of the forces acting on them, which can be determined experimentally or by theoretical calculations. In the case of tunnel sections of subways, experimental studies are extremely difficult to organize and conduct, so only theoretical methods are an alternative. This study presents the results of theoretical calculations of the elastic-dynamic characteristics for railway switches used in tunnel sections of subways. Practical calculations of the stiffness of rail threads and the modulus of elasticity of the sub-rail base were performed, and dependencies of the distribution of elastic-dynamic parameters along the length of railway switches were obtained. On their basis, the forces of interaction with the subway rolling stock were determined and their distribution along the length of the railway switch was analyzed. The obtained data can serve as a prerequisite for checking the strength of structural elements.
References
Danilenko, E.I. (2010). Zaliznychna koliia [Railway track]. Kyiv: Inpres. [in Ukrainian].
Boiko, V., Molchanov, V., Tverdomed, V., & Oliinyk, O. (2018). Analysis of vertical irregularities and dynamic forces on the switch frogs of the underground railway. In MATEC Web of Conferences (Vol. 230, p. 01001). EDP Sciences.. https://doi.org/10.1051/matecconf/201823001001.
Hamarat, M., Kaewunruen, S., Papaelias, M., & Silvast, M. (2019). New insights from multibody dynamic analyses of a turnout system under impact loads. Applied Sciences, 9(19), 4080. https://doi.org/10.3390/app9194080.
Kassa, E., Andersson, C., & Nielsen, J. C. (2006). Simulation of dynamic interaction between train and railway turnout. Vehicle system dynamics, 44(3), 247-258. https://doi.org/10.1080/00423110500233487.
Wan, C., Markine, V. L., & Shevtsov, I. Y. (2014). Analysis of train/turnout vertical interaction using a fast numerical model and validation of that model. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 228(7), 730-743. https://doi.org/10.1177/0954409713489118.
Zhai, W., & Zhai, W. (2020). Vehicle–track coupled dynamics models (pp. 17-149). Springer Singapore. https://doi.org/10.1007/978-981-32-9283-3.
Jia, X. (2017, July). Dynamic Performance of Metro Train Passing through Turnout Branch in Depot. In First International Conference on Rail Transportation 2017 (pp. 1047-1054). Reston, VA: American Society of Civil Engineers. https://doi.org/10.1061/9780784481257.104.
Wehbi, M., & Musgrave, P. (2017). Optimisation of track stiffness on the UK railways. Permanent Way Institute Journal, 135.
Montalbán, L., Real, J., & Real, T. (2013). Mechanical characterization of railway structures based on vertical stiffness analysis and railway substructure stress state. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 227(1), 74-85. https://doi.org/10.1177/0954409712452348.
Sussman, T. R., Ebersöhn, W., & Selig, E. T. (2001). Fundamental nonlinear track load-deflection behavior for condition evaluation. Transportation Research Record, 1742(1), 61-67. https://doi.org/10.3141/1742-08.
Berggren, E. (2009). Railway track stiffness: dynamic measurements and evaluation for efficient maintenance (Doctoral dissertation, KTH). https://www.diva-portal.org/smash/record.jsf?pid=diva2%3A216214&dswid=-4995.
Pita, A. L., Teixeira, P. F., & Robuste, F. (2004). High speed and track deterioration: the role of vertical stiffness of the track. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 218(1), 31-40. https://doi.org/10.1243/095440904322804411.
Moravčík, M. (2004). Vertical track stiffness effect on dynamic behaviour of track structure. Komunikácie-vedecké listy Žilinskej univerzity v Žiline, 6(3), 10-16.. https://doi.org/10.26552/com.C.2004.3.10-16.
Yongjie, L., Bowen, Z., & Jianxi, W. (2014). Multi-Objective Optimization Study for the Turnout Sub-Rail Parameters Based on Orthogonal Experiment. The Open Mechanical Engineering Journal, 8(1). https://doi.org/10.2174/1874155X01408010567.
Chen, R., Wang, P., & Wang, L. (2012). Rubber Pad Intensity and Track Stiffness of Double Slip Turnout in Heavy Haul Railway. Research Journal of Applied Sciences, Engineering and Technology, 4(20), 4112-4117.
Tong, Y., Liu, G., Yousefian, K., & Jing, G. (2022). Track vertical stiffness–value, measurement methods, effective parameters and challenges: A review. Transportation Geotechnics, 37, 100833. https://doi.org/10.1016/j.trgeo.2022.100833.
Shi, C., Zhou, Y., Xu, L., Zhang, X., & Guo, Y. (2023). A critical review on the vertical stiffness irregularity of railway ballasted track. Construction and Building Materials, 400, 132715. https://doi.org/10.1016/j.conbuildmat.2023.132715.
Danilenko, E. I. (2006). Pravyla rozrakhunkiv zaliznychnoi kolii na mitsnist i stiikist. [Rules for calculating railroad track strength and stability]. Kyiv: Transport Ukrainy. [in Ukrainian].
Danilenko, E. I. & Molchanov, V. M. (2014). Osoblyvosti teoretychnoho metodu vyznachennia pruzhnodynamichnykh parametriv strilochnykh perevodiv [Features of the theoretical method for determining the elastic-dynamic parameters of turnouts]. Zbirnyk naukovykh prats Derzhavnoho ekonomiko-tekhnolohichnoho universytetu transportu. Seriia: Transportni systemy i tekhnolohii – Collection of scientific papers of the State Economic and Technological University of Transport. Series: Transport systems and technologies, 24, 96–105. [in Ukrainian].
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