Analysis of Train Running Performance at Key Points of Track Geometry Under Different Track Irregularity Excitations
To explore the relationship between curve superelevation,horizontal curve radius,and transition curve length with train speed when the train passes through the horizontal curve point(HY),the middle of the curve(QZ),and the curve transition point(YH)under different track irregularities,a dynamic analysis model with 50 degrees of freedom was established based on a Chinese high-speed train-set prototype.The study results indicate that the dynamic response trends of the train at key points on the track alignment,with respect to variations in train speed and planar alignment parameters,are gen-erally similar to the Chinese ballastless track spectrum and the German low-disturbance spectrum.However,the degree of response varies among these key points.The changes in superelevation and curve radius have a more moderate impact on the dynamic response of the train compared to the substan-tial effect of transition curve length.The findings of this study can provide theoretical references for the design of high-speed train routes and the matching relationships between route planar parameters when operating at higher speeds.
high-speed railwaytrack irregularity spectrumkey points on the routeroute plan parametersdynamic simulation
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