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为提高大型客车在弯道路段的行驶安全性,在现行的道路平曲线半径计算模型基础上,提出平曲线处大型客车最大安全运行速度计算模型。通过选取大型客车为研究对象,首先对其前后轴内外轮的受力进行了分析,确定了客车最易发生侧滑的车轮,并综合考虑车辆结构与动力学特性、道路平曲线以及路-轮胎-车耦合等因素,应用系统动力学理论,构建了公路平曲线段处客车发生侧滑时的最大安全行驶速度计算模型。然后利用该模型计算了不同道路条件下的平曲线段处大型客车最大运行速度。
In order to improve the driving safety of large passenger cars in curved road sections, the calculation model of the maximum safe operating speed of large passenger cars at the flat curve is proposed based on the existing calculation model of road flat curve radius. By selecting large passenger cars as the research object, the forces on the inner and outer axles of the front and rear axles are analyzed firstly, and the most prone to slippery wheels of the passenger cars are determined. The structural and dynamic characteristics of the vehicles, the curve of the road and the road-tire - vehicle coupling and other factors, the system safe theory is applied to construct the maximum safe driving speed calculation model for side-slip passenger cars in the flat curve section of the highway. Then, using this model, the maximum running speed of large passenger car at the flat curved section under different road conditions is calculated.