摘要
以东风EQ140载重车为标准车型，从汽车运动的牵引平衡入手，讨论了汽车的几种行驶状态，理想的纵坡和不限坡长的最大纵坡，不同的道路阻力系数所对应的减速行程计算等。参考了日本高速公路设计要领，并与我国现行的规范数值进行了对比分析，提出了不同计算行车速度的公路需设置爬坡车道的纵坡值、公路的最大纵坡值和坡长限制长度可比现行规范适当放松的数值。此建议的提出，对于丘陵和山区高等级公路合理地运用纵坡和坡长设计，具有一定的实用意义。
Beginning with tractive balance of automobile movement, this paper analyses several runningconditions of Deng Feng EQ140 Truck, the ideal grade and the ~mum grade of unlimitedgradinal distance, and the acceleration and deceleration distance of different road reSistancecoefficent. Based on the Japanese expressway design standal and chinese highway designspecification, this paper puts forword the suggestion that theMgrade vthe be set for climbing lanewith different vilosity, the maximum grade value Of- road the hotted brazenal distance beincreased properly. This suggestion haS practical aiedcance for= htyhway dab in mOUntainareas.
出处
《长沙交通学院学报》
1998年第3期40-46,共7页
Journal of Changsha Communications University
关键词
纵坡
坡长
公路
设计
automobile therory
longitudinal grade
gradinal distance
