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Simulation and Analysis of High-Speed Train Running Quality Affected by Route Alignment Condition

Owing to the sharply increase of running speed of high-speed railway trains, the influence of route geometric condition on running quality becomes more sensitive. In order to investigate into the effects of high-speed railway route alignment condition on the running quality, a dynamic model was established, which could be used to evaluate the influence of railway route alignment parameters on the running safety and ride comfort exactly. Through the analysis of the effects of a simulated route plan on the system dynamic responses based on this model, the basic principles of alignment parameter selection and an evaluating and optimizing method for district route design were presented. This work could provide some theoretical basis and reference for high-speed railway route design.