主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
Automobile Applied Technology

Automobile Applied Technology ›› 2025, Vol. 50 ›› Issue (22): 123-127.DOI: 10.16638/j.cnki.1671-7988.2025.022.022

• Standards·Regulations·Management • Previous Articles    

Research on the Mechanism of the Influence of Linear Parameters on Accident Amount of Highway in Mountainous Areas －Taking a Highway in Yunnan as an Example

LI Taifeng1 , XIONG Chang'an2*   

  1. 1.Yunnan Provincial Highway Administration Corps; 2.National Engineering Research Center for Efficient Maintenance, Safety and Durability of Roads and Bridges, Broadvision Engineering Consultants Company Limited
  • Published:2025-11-21
  • Contact: XIONG Chang'an

山区高速道路线形参数对事故数影响机理研究 ——以云南某高速为例

李太峰 1，熊昌安 2*   

  1. 1.云南省公路路政管理总队；2.云南省交通规划设计研究院股份有限公司 公路 与桥梁高效养护及安全耐久国家工程研究中心
  • 通讯作者: 熊昌安
  • 作者简介:李太峰（1980－），男，硕士，高级工程师，研究方向为道路工程、交通气象； 通信作者：熊昌安（1997－），男，硕士，工程师，研究方向为交通安全与环境、交通气象、数据挖掘
  • 基金资助:
    国家重点研发计划项目（2022YFC3002601）；云南省数字交通重点实验室（202205AG070008）；云南省交通 投资建设集团有限公司科技创新项目（YCIC-YF-2022-06）

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Abstract: To quantitatively analyze the influence of road alignment on the traffic accident rate of mountainous highways, this study collects road alignment data, traffic volume data, and traffic accident data from 2018 to 2021 on a typical mountainous highway in Yunnan Province, and analyzes the correlation relationship between road alignment and accident amount from four perspectives: longitudinal slope, vertical curve slope difference, level curve deflection angle, and level curve radius. The accident amount is summed over 100 million vehicle-kilometers, and the correlation between road alignment and accident amount is analyzed from four perspectives: longitudinal slope gradient, vertical curve gradient difference, level curve deflection angle and level curve radius. The results show that: 1) the longitudinal slope has a quadratic relationship with the accident amount of 100 million vehicle-kilometers, and the accident amount of 100 million vehicle-kilometers increases when the slope increases; 2) the difference in the slope of vertical curves has a quadratic relationship with the accident amount of 100 million vehicle-kilometers, and the accident amount of 100 million vehicle-kilometers decreases and then rises when the difference in the slope increases; 3) the accident amount of 100 million vehicle-kilometers increases when the angle of deviation of flat curves increases and the speed of the increase becomes slower gradually; 4) left-turn, right-turn radius of the level curve and the accident amount of hundreds of millions of vehicle-kilometers have a logarithmic function relationship, and the accident amount of hundreds of millions of vehicle-kilometers decreases when the radius of the level curve increases.

Key words: traffic safety; mountain highways; accident amount; road alignment

摘要： 为定量解析山区高速公路道路线形对交通事故发生率的影响机理，该研究收集云南省 某典型山区高速公路的道路线形数据、交通量数据、2018 至 2021 年交通事故数据，基于全 局距离法进行异常值鉴别与处理，采用同质法划分路段单元，合并具有相同纵坡坡度的相邻 路段，对亿车公里事故数求和，从纵坡坡度、竖曲线坡度差、平曲线偏角和平曲线半径四个 角度分析道路线形与事故数的关联关系。研究结果表明：1）纵坡坡度与亿车公里事故数呈二 次函数关系，坡度增大时亿车公里事故数随之上升；2）竖曲线坡度差与亿车公里事故数呈二 次函数关系，坡度差增大时亿车公里事故数先降后升；3）平曲线偏角增大时，亿车公里事故 数逐渐增大，且其增加速度逐渐变缓；4）左转、右转平曲线半径与亿车公里事故数均呈对数 函数关系，平曲线半径增加时亿车公里事故数降低。

关键词: 交通安全；山区高速公路；事故数；道路线形