Influence of superelevation of subway line act on wheel-rail wear

In order to reduce the subway wheel-rail wear and improve the safety and comfort during the train running round the curve section,a wheel-rail relationship model is established using SIMPACK software based on the vehicle dynamics theory. It conducts three conditions including deficient superelevation,normal superelecation and surplus superelevation. It analyses the change regulation about sevenparameters which are wheel-rail lateral force,wheel-rail vertical force,derailment coefficient,wear power,wear number,wheel load reduction rate and overturning coefficient during the train running. Most importantly,it analyses deeply the regulation of the change about wear power and wear number accompanied by the change of superelevation. One conclusion is wear number and the change of superelevation are negatively correlated. The other is wear power is positively correlated. It suggested that it should use lower speed when the train crosses the curves of the rail. It should use lower deficient superelevation when it can not in the case of the best situation.