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http://dx.doi.org/10.7782/JKSR.2015.18.2.139

Evaluation of the Optimal Vertical Stiffness of a Fastener Along a High-speed Ballast Track  

Yang, Sin-Choo (High Speed System Research Center, Advance HSR Research Division, KRRI)
Kim, Eun (High Speed System Research Center, Advance HSR Research Division, KRRI)
Publication Information
Journal of the Korean Society for Railway / v.18, no.2, 2015 , pp. 139-148 More about this Journal
Abstract
By increasing the vertical stiffness of the rail fastening system, the dynamic wheel load of the vehicle can be increased on the ballast track, though this increases the cost of track maintenance. On the other hand, the resistance acting on the wheel is decreased, which lowers the cost of the electric power to run the train. For this reason, the determination of the optimal fastener stiffness is important when attempting to minimize the economic costs associated with both track maintenance and energy to operate the train. In this study, a numerical method for evaluating the optimal vertical stiffness of the fasteners used on ballast track is presented on the basis of the process proposed by L$\acute{o}$pez-Pita et al. They used an approximation formula while calculating the dynamic wheel load. The evaluated fastener stiffness is mainly affected by the calculated dynamic wheel load. In this study, the dynamic wheel load is more precisely evaluated with an advanced vehicle-track interaction model. An appropriate range of the stiffness of the fastener applicable to the design of ballast track along domestic high-speed lines is proposed.
Keywords
High-speed railway; Ballast track; Track maintenance cost; Energy cost; Fastener stiffness;
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  • Reference
1 A. Lopez Pita, P.F. Teixeira, F. Robuste (2004) High speed and track deterioration: the role of vertical stiffness of the track, Proceeding of the Instn. Mech. Engrs. Part F: J. Rail and Rapid Transit, 218, pp. 31-40.   DOI
2 R. Sauvage, J. Fortin (1982) La traînee de roulement des vehicles de chemin de fer, Rev. Generale Chemins Fer, pp. 383-390.
3 A. Prud' Homme (1970) La voie, Rev. Generale Chemins Fer, pp. 56-72.
4 KRRI (2009) A study of determining the replacement interval for the rail fastening system in HSR.
5 Ing. C. Onorii (2007) Mechanical Behaviour of Traditional and Antivibration Railway Tracks with Recycled Rubber Materials, University Degli Studi Di Napoli Federico II
6 Comite D-117, ORE (1983) Optimum adaptation of the conventional track to future traffic: synthesis report. ORE, Report 29.
7 Comite D-71, ORE (1970) Sollicitation de lavoie du ballast et de la plateforme sous $l^{\circ}Oadion $ des charges roulantes. ORE, Report1.
8 Comite C-113, ORE (1970) Masse par essieu admisible pour les wagons en fonction du diameetre des roues et de la vitesse. ORE, Report1.
9 McCullough (1972) Effect on track of heavy axle load, Proceeding of the Instn Mech. Engrs.
10 Andreyev (1974) Particularidades de la conservacion de la via en sectores de alta velocidad de circulacion de los trenes(translation from Russian by Fundacion de Ferrocarriles Espanoles), Zhelieznoderozhniy Transport 1.
11 T. J. Pennycook (1976) The effect of axle load on the vertical settlement of the track, Research and Development Division, Railway Technical Centre, Derby, Technical Note TN.SM. 144, File 261-201-144.
12 W. Henn (1978) La repercusion de la forma de la superestructuray de la carga por eje en la alteracion del nivel de la via, Technical University of Munich, Germany, Report 30.
13 G. Janin, (1982) La maintenance de la geometrie de la voie, Rev. Generale Chemins Fer, pp. 331-346.
14 A. Lopez Pita, (2001) The vertical stiffness of the track and the deterioration of high-speed lines, Rev. Obras Pulicas, pp. 7-26.