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本文针对城市轻轨车辆在通过小半径曲线时的轮轨磨耗进行了研究,指出轮轨磨耗量的大小主要决定于接触点上滑动率、接触压力和摩擦系数的大小,并提出了计算方法.计算表明:当曲线半径从50m减小到30m时,滑动率将增加27％;当半径减小到20m时,滑动率将急剧增加到60％,这意味着轮轨磨耗将要增加一倍,可见城市轻轨交通系统的最小曲线半径规定为30m比20m来得合理.最后提出了有关减少轮轨磨耗的措施.
In this paper, the wheel and rail abrasion of the urban light rail vehicle passing through a small radius curve is studied. It is pointed out that the amount of wheel and rail wear mainly depends on the sliding rate, contact pressure and friction coefficient at the contact point, and the calculation method is proposed. The results show that when the radius decreases from 50m to 30m, the sliding rate will increase by 27%. When the radius decreases to 20m, the sliding rate will increase sharply to 60%, which means the wheel and rail abrasion will be doubled. Light rail transit system minimum curve radius of 30m is more reasonable than 20m.Finally put forward the measure to reduce wheel and rail wear.