摘要
通过对7条国道交通量数据的统计分析,选出我国高等级公路上行驶的有代表性的车型作为研究对象,以道路上车辆行驶的路段平均速度为基础,利用汽车行驶理论推导出坡道上变速车道长度修正系数的计算公式。讨论道路坡度对车辆加速性能的影响,进而推导出道路坡度与变速车道长度的关系,同时计算出不同道路坡道时的变速车道长度的修正系数,并与现行道路路线设计规范进行对比分析,给出坡道上变速车道长度的修正系数参考值,供公路设计人员设计山区或丘陵区高等级公路时参考。
Taking the typical vehicle as the research objections through the data analysis of traffic volume of 7 highways,based on road average-speeds,the research described in this paper calculation formula of speed-change lane lengths correction factor on slopeway,utilized the theories of vehicle dynamics.The effects of road slope gradient on vehicle accelerating performance were discussed and the co-relation between the slope gradient and the speed-change lane length was derived,together with correction factors for different slopes and speed-change lanes,compared with the currently effective specifications.The results could be used as design references for expressway design in mountain areas.
出处
《公路交通科技》
CAS
CSCD
北大核心
2004年第8期99-102,共4页
Journal of Highway and Transportation Research and Development
关键词
路段平均速度
变速车道
汽车理论
修正系数
Road average-speed
Speed-change lanes
Vehicle dynamics
Correction factor
