本文总结了四轴货车在小半径反向曲线上发生脱轨事故的一般规律,分析了四轴棚车在曲线上的超高和顺坡率、车辆旁承接触状态以及装货偏载对车辆脱轨的影响,提出了四轴货车通过缓和曲线引起轮载荷减载的车辆减载率计算公式。 此外,结合小半径反向曲线的特点,提供了防止车辆脱轨的措施。 This article summarizes the general rules of four-axle truck derailment on the curve of small radius, and analyzes the influence of the four-axis box car on the curve of superhigh and slippery slope, the contact state of the vehicle next to the vehicle and the partial load on the vehicle derailment , A formula for calculating the load shedding rate of a four-axle truck caused by wheel load decelerating caused by a mild curve is proposed. In addition, combined with the characteristics of a small radius of the reverse curve provides a measure to prevent vehicle derailment.