【摘要】 以我国高等级公路上行驶的典型车型(EQ140)为研究对象,分析高等级公路纵坡的坡度、坡长限制问题.利用汽车行驶理论,依据车辆在公路上的理想行车车速、最低容许车速,得出高等级公路理想的纵坡、不限坡长的最大纵坡和车辆在各种坡度坡道上行驶的减速距离.以这些分析结果为基础,与我国现行公路路线设计规范进行对比分析,并参考美国、日本的公路路线设计标准,提出了我国高等级公路的坡长限制值、公路的最大坡度值,同时给出了陡坡上设置爬坡车道的坡度值参考指标,以供设计人员在公路设计时参考.更多还原

【Abstract】 Typical vehicle (EQ140) was selected through investigation of vehicle on highway. Ideal grades and the maximum grades unlimited grade lengths were studied utilized the theories of vehicle. According to the results of analysis, grade length limitation was loosed and the maximum grade of design specification for highway was enlarged. Finally grade length limitation of highway, the maximum grades of highway and the grades of climbing lane were put forward, referencing the design criterions for highway of Japan and USA. The results could be used as references for highway designing.更多还原