摘要
基于汽车动力学原理和汽车行驶理论,利用货车上坡动力性能、换档行为和下坡制动性能分别建立了高速公路上下坡路段货车的运行车速理论预测模型。以CA5310型8×4厢,仓栅式运输车为例,通过对计算车型的分析计算,得出货车满载和超载时的爬坡性能曲线、下坡速度曲线以及运行车速的变化规律,并分析了影响货车上下坡性能的重要参数:功率重量比、坡度等,从而为山区高速公路的线形设计及安全性评价提供参考。
The operating speed predicting model of trucks on freeway＇s longitudinal slope section was established based on vehicle＇ s dynamics theory and operation theory, shifting performance and braking performance. By analysing and calculating the typical truck-CA5310-8×4 container carrier, the laws of operating speed, the speed curve of full and overload trucks on upgrade and downgrade were obtained. The important performance parameters including the rate of power to weight, grade, etc. were analyzed. The research provides a reference for freeway＇ s alignment design and safety evaluation.
出处
《公路交通科技》
CAS
CSCD
北大核心
2008年第6期139-143,共5页
Journal of Highway and Transportation Research and Development
关键词
交通工程
运行车速预测模型
预测
上下坡路段
traffic engineering
operating vehicle speed predicting model
prediction
longitudinal slope section
