摘要
道路路线设计规范在定义极限圆曲线半径时,把横向力系数作为衡量车辆稳定性的一个重要因素。通过车辆动态模型仿真车辆在同一圆曲线不同横坡上行驶,表明乘客的舒适度感受与横向力系数是不等同的,车辆轮胎与地面的横向力系数随着超高横坡的变化而变化。仿真结果发现比现行设计规范中所设超高极限圆半径值增加约10%才能满足车辆最不利轮胎处的横向力系数要求。
Current road alignment design codes consider lateral force coefficient(LFC) as animportant factor of vehicle stability when defining the limit circular curve radius. Through vehicles dynamic model simulating vehicles driving on the same circular curve but different cross slope, it is improved that passenger comfort feeling is different from LFC. The vehicle tyre and ground LFC are changeable with the changing of super-high cross slope. Based on simulation results, it is noted that the super-high limit circular curve radius in existing design codes need to be increased by about 10% to satisfy the demand of LFC on the most dangerous tyre.
出处
《中国市政工程》
2015年第2期68-71,122,共4页
China Municipal Engineering
关键词
横向力系数
仿真
车辆动态模型
lateral force coefficient
simulation
vehicle dynamic model
