摘要
通过选取双车道二级公路典型路段,采用路段实测法,收集小半径曲线段的线形资料及速度数据,分析了小客车和中型货车在半径R为200 m、250 m3、00 m、400 m、500 m6、00 m、650 m的平曲线上的速度数据,得到相应的运行速度V85。分别对运行速度利用SPSS软件进行分析,建立双车道二级公路小半径曲线段小型车辆运行速度模型。统计分析表明,R与V85显著相关,显著性概率为0,统计显著性强,模型精度高。同时分析了汽车行驶特性,结合实地调查数据情况,确定二级公路小半径曲线临界半径R0=610 m。
The method of survey on the some typical sections of Class Ⅱ Highway with two-lane are selected, the data of alignment and speed are collected, the speed data on the radius（R） of 200 fn, 250 m, 300 m, 400 m, 500 m, 600 m, 650 m of horizontal curve for passenger cars and medium-sized trucks are analyzed and then the correspond operating speed V85 is gained . After analyzing the operating speed by SPSS software respectively, the operating speed model for passenger cars on Class Ⅱ Highway with twolane is established. Statistical analysis indicates that the radius R and VB5 are related significantly, and the significant probability is 0. The model has high accuracy. At the same time, the moving characteristics of vehicles are analyzed and combined with data which are surveyed on the spot, critical radius of small radius curve for Class Ⅱ Highway, R0 = 610 m, is identified.
出处
《公路》
北大核心
2009年第4期104-108,共5页
Highway
基金
陕西省交通科技项目,项目编号06-31K
关键词
双车道二级公路
运行速度模型
小半径曲线
临界半径
Class Ⅱ Highway with two-lane
operating speed model
small curve radius
critical radius
