吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (增刊1): 189-192.

• 论文 • 上一篇    下一篇

山区公路纵坡自由流运行速度预测模型

许洪国1, 陈秀锋2,1, 刘三兵1   

  1. 1. 吉林大学 交通学院,长春 130022;
    2. 青岛理工大学 汽车与交通学院,山东 青岛 266520
  • 收稿日期:2012-06-13 出版日期:2012-09-01 发布日期:2012-09-01
  • 通讯作者: 陈秀锋(1977-),男,讲师,博士研究生.研究方向:道路交通安全.E-mail:chenhill7765@163.com E-mail:chenhill7765@163.com
  • 作者简介:许洪国(1956-),男,教授,博士生导师.研究方向:汽车交通安全,交通事故再现方法.E-mail:xuhg@jlu.edu.cn
  • 基金资助:

    国家自然科学基金项目(50878095,51078167).

Prediction model of free-flow operation speed on mountain slope

XU Hong-guo1, CHEN Xiu-feng2,1, LIU San-bing1   

  1. 1. College of Transportation, Jilin University, Changchun 130022, China;
    2. College of Automotive and Transportation, Qingdao Technological University, Qingdao 266520, China
  • Received:2012-06-13 Online:2012-09-01 Published:2012-09-01

摘要: 基于车辆动力学分析,依据道路阻力和车辆动力因数的关系,分3种情况构建了山区纵坡路段车辆运行速度动力学模型,预测了纵坡路段的基本运行速度,并对此速度进行修正得出路段预测速度。利用Matlab编程和GUI(Graphical user interface)可视化界面编写了车辆运行速度预测程序,对山区双车道路段进行小客车运行速度预测。预测车速与实测车速对比结果表明:预测车速与断面观测车速基本相符,模型预测精度高、适用性好,能够反映车辆在纵坡行驶的动力特性。

关键词: 道路工程, 山区公路, 纵坡路段, 车辆动力学, 运行速度

Abstract: Based on vehicle dynamic analysis, a basic operating speed of vehicle on mountain slope was achieved by the dynamic model, which was divided into three cases based on the relationship between road resistance and dynamic vehicle factor. And then operating prediction speed was get with the basic speed correction. The operating speed of vehicles on slope sections were established by Matlab programming and Graphical user interface (GUI) visualization, with which car operating speed prediction was carried out on two-lane road mountain area. The comparison of observation speed with forecast results show that the forecast speed is consistent with observation speed. The prediction model has high accuracy and good applicability, and can reflect dynamic characteristic of vehicles.

Key words: road engineering, mountainous highway, slope section, vehicle dynamics, operating speed

中图分类号: 

  • U412.3
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