高速公路立交入口区域行车风险评价模型

王晓飞; 符锌砂; 葛婷

doi:10.19818/j.cnki.1671-1637.2011.05.014

高速公路立交入口区域行车风险评价模型

doi: 10.19818/j.cnki.1671-1637.2011.05.014

华南理工大学土木与交通学院, 广东广州 510640

基金项目:

国家863计划项目 2007AA11Z235

详细信息

作者简介:
王晓飞(1980-), 女, 浙江奉化人, 华南理工大学讲师, 工学博士, 从事道路工程及交通安全研究

中图分类号: U491.255
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- PDF下载量: 402
- 被引次数: 0
出版历程
- 收稿日期: 2011-03-08
- 刊出日期: 2011-10-25

Driving risk evaluation model of freeway interchange entrance area

School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong, China

More Information

Author Bio:
WANG Xiao-fei (1980-), female, lecturer, PhD, +86-20-87111030, xiaofeiw@126.com

摘要

摘要: 分析了高速公路立交入口区域车辆行车特征, 提出了碰撞危险指数概念, 考虑了碰撞可能性系数、碰撞车辆速度差、目标车道跟驰车辆在碰撞时的速度、加速度、前后车辆间距5个因素, 将入口区域车辆可能发生的碰撞行为分为5种情形, 研究了5种情形的发生条件, 建立了相应的风险评价模型。针对不同的主线车辆运行车速、车头间距和匝道驶入车辆运行车速进行了三维数值模拟, 得到了入口区域行车风险的变化规律。分析结果表明: 主线运行车速越大, 前后车辆间距越小, 车速差越大, 其行车风险也越大。
- 交通安全 /
- 行车风险 /
- 碰撞危险指数 /
- 立交入口区域 /
- 加速车道 /
- 三维数值模拟
Abstract: The traffic characteristics of freeway interchange entrance area were analyzed, and the concept of collision risk index(CRI) was put forward.The coefficient of collision possibility, speed difference between two colliding vehicles, colliding speed and acceleration of following vehicle, vehicle spacing on target lane were taken into consideration.Traffic collisions that may occur in entrance area were divided into five kinds, and the occurrence conditions and risk evaluation models of five cases were studied correspondingly.3D numerical simulation was carried out for different vehicle running speeds on main line, space headways, vehicle running speeds on entrance ramp, and the driving risk variation laws of entrance area were obtained.Analysis result shows that with higher running speed on main line, smaller vehicle spacing and higher speed difference, driving risk will increase.
- traffic safety /
- driving risk /
- CRI /
- interchange entrance area /
- acceleration lane /
- 3D numerical simulation

HTML全文

图 1 碰撞过程

Figure 1. Collision process

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图 2 三维数值模拟结果

Figure 2. 3D numerical simulation results

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