针对目前公路设计研究采用的汽车横向稳定性计算模型仍然是刚性车辆的简化结构,未考虑汽车悬架及轮胎的弹性变形影响的问题,通过分析悬挂系统对车辆行驶的横向稳定性的影响以及大型车横向倾覆特点,推导出考虑车辆悬挂结构后的公路平面设计指标计算方法及公式;参考Bonneson等的研究成果,给出了为保证车辆横向行驶安全舒适条件下的横向力系数推荐取值及不同设计速度时的圆曲线极限最小半径值。结果表明:提出的设计指标的计算方法及取值为现有标准规范的修订提供了一定的参考。 In view of the current vehicle lateral stability calculation model used in highway design research is still a simplified structure of rigid vehicles, without considering the issue of automobile suspension and tire elastic deformation, by analyzing the impact of suspension system on the vehicle’s lateral stability and large According to the research results of Bonneson et al., The recommended values ​​and different values ​​of lateral force coefficient for ensuring the safety and comfort of vehicles traveling in horizontal direction are given. The minimum radius of the circle curve limit at design speed. The results show that the proposed calculation method and value of design indexes provide some references for the revision of existing standards.