基于CarSim仿真的超高过渡起点位置对比研究

Comparative study of superelevation starting position based on CarSimsimulation model

根据公路设计中3种超高过渡起点设置方式,分别从超高过渡段的排水和车辆行驶舒适性方面对3种方式进行对比分析。建立3种方式的横向力系数模型和横向加速度变化率模型,通过Mathmatica绘出相应的函数图象,利用CarSim建立仿真模型进行验证,根据车辆行驶过程中横向力和横向加速度变化率的变化情况,分析3种超高过渡方式对于车辆行驶舒适性的影响。

The three methods for the highway superelevation's starting point design were compared and analyzed from ride comfort and pavement drainage.According to the length of poor drainage,the three methods'ability of pavement drainage was compared,and the lateral force coefficient models and the lateral acceleration models were established and then analyzed by Mathmatica.The corresponding function image was drawn.Finally,the validated CarSim simulation model,based on the changes in the lateral force and lateral acceleration change rate,was analyzed with the three methods for vehicle ride comfort.