双车道公路安全设计一致性评价模型研究  

Research on Consistency Evaluation Model of Two-lane Highway Safety Design

作　　者：刘瑄 张志清[1] 朱雷鹏 张颖[1] 王慧竹 LIU Xuan;ZHANG Zhi-qing;ZHU Lei-peng;ZHANG Ying;WANG Hui-zhu(Beijing University of Technology,College of Metropolitan Transportation,Beijing 100124,China;Beijing Municipal Engineering Design and Research Institute,Beijing 100082,China)

机构地区：[1]北京工业大学城市建设学部,北京市100124 [2]北京市市政工程设计研究总院有限公司,北京市100082

出　　处：《公路》2024年第10期260-267,共8页Highway

基　　金：国家自然科学基金,多因素动态耦合下道路安全风险机理与设计一致性基础研究理论研究,项目编号5217082730。

摘　　要：道路安全设计一致性能够体现道路线形设计条件与驾驶人期望的一致性,而安全设计一致性评价模型是判别设计一致性程度的关键。以占我国公路网总里程80%以上的双车道公路为研究对象,通过驾驶模拟实验,基于建立的运行速度和可以代表驾驶员期望的惯性速度预测模型,构建了一个双车道公路路段线形一致性评价模型。利用K-means聚类法得到路段的风险类别,进而确定了一致性评价标准和阈值。研究结果表明:惯性速度与运行速度围成的面积以及标准差越小,一致性评价参数C值越大,一致性越好,反之亦然。路段风险大小和一致性程度有较强的相关性。当C≤1时,路段属于Ⅰ类风险路段,一致性最差,极易发生交通事故;当12时,路段属于Ⅲ类风险路段,一致性最好,安全性也最高。研究成果可为双车道公路路段安全设计一致性评价提供参考。Road safety design consistency can reflect the consistency of road alignment design conditions and driver expectations,and the safety design consistency evaluation model is the key to determining the degree of design consistency.Taking the two-lane highway,which accounts for more than 80%of the total mileage of China's highway network,as the research object,through driving simulation experiments,based on the established operating speed and the inertial operating speed prediction model that can represent the driver's expectations,a linear consistency evaluation model of two-lane highway section is constructed.The risk category of the road section is obtained by using the K-means clustering method,and the consistency evaluation standard and threshold are determined.The results show that the smaller the area and standard deviation of the inertial operating speed and the operating speed, the largerthe C value of the consistency evaluation parameter and the better the consistency, and vice versa. There isa strong correlation between the risk size and consistency degree of road segments. When C<l, the roadsection belongs to Class I risk section, the consistency is the worst, and traffic accidents are very likely tooccur;when 1<C<2, the road section belongs to Class II risk road section and has poor consistency;andwhen C>2, the road section belongs to Class Ⅲ risk road section, with the best consistency and thehighest safety. The research results can provide reference for the consistency evaluation of safety design oftwo-lane highway sections.

关 键 词：道路安全设计 评价模型 驾驶模拟实验 双车道公路 线形一致性 

分 类 号：U491.2[交通运输工程—交通运输规划与管理] U491.31[交通运输工程—道路与铁道工程]