Abstract
One of the technical possibilities to solve a gauge crossing is to install a dual gauge. This solution has several advantages and disadvantages discussed in this paper. Lack of experience of maintenance and lack of standards for the design of dual track are among the most important disadvantages. The wheel and rail interface on track curves is more difficult than in straight sections. Therefore, the subject of the present article is a geometrical parameter of dual gauge track, i.e., the rail superelevation, which has an impact on the wheel–rail interaction at curves and influences the value of uncompensated acceleration, occurring when a train passes a curve, and, consequently, the intensity of rail wear. The objective of the present article is to analyse the features of dual gauge track and the superelevation calculation methodology considered, to present the approach to rational calculation of superelevation for dual gauge track of Šeštokai–Mockava (Lithuania–Poland) using several calculation versions as well as to make recommendations for the calculation of superelevation.
Highlights
Because of the geometrical parameters, the moving path of wheel and the state of wheel–rail contact will change obviously, when a vehicle passes through a curved track, which can aggravate the wheel–rail interaction, intensify the wheel–rail vibration, and effect the running safety and comfort (Wang et al 2014)
It is stated that when the curve radius increases from 400 m to 800 m, derailment coefficient is reduced by 38%, rate of wheel load reduction is reduced by 41%, wheel–rail lateral force is reduced by 35%, and attrition power is reduced by 68%
The first method is a comprehensive model of vehicle system dynamics, which is used for analysing the effect of planar curve, vertical curve, and planar and vertical sections alignment on running quality of the vehicle
Summary
Because of the geometrical parameters, the moving path of wheel and the state of wheel–rail contact will change obviously, when a vehicle passes through a curved track, which can aggravate the wheel–rail interaction, intensify the wheel–rail vibration, and effect the running safety and comfort (Wang et al 2014). Gailienė et al Approach to rational calculation of superelevation in dual gauge track ment of RCF in rails depends on the interplay between crack growth, which is governed by the contact stress and the tangential force at the contact patch, and wear, which depends on the tangential force and the creepage at the contact patch These parameters are dependent on a large number of inter-dependents factors, in particular (Evans, Iwnicki 2002):. We employ our earlier published research results (Gailienė 2012; Povilaitienė, Laurinavičius 2004; Povilaitienė 2004) to make recommendations for improvement of the methodology for calculation of the superelevation This way we seek to make the railway traffic safer and more comfortable and to ensure the least possible wear of the rail. The results of modelling are used for rational methodology for calculation of superelevation
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