摘要
针对山区高速公路桥隧连接段事故率高的特点,为了从道路几何线形优化角度提高其行车安全性,对桥隧连接段特征点车速进行了观测,并开展了驾驶员心理生理指标的实车试验。在此基础上分析了车辆在桥隧连接段车速衍生值(平均速度差和加速度)以及驾驶员心理生理指标的变化情况,并运用数理统计理论定量分析了桥—隧路段、桥—隧—桥路段以及隧—桥—隧路段3种主要形式对车辆平均速度差、加速度以及驾驶员心率增长率的影响。结果表明,隧道洞口平纵线形和隧道之间的连接段长度对车辆平均速度差、加速度和驾驶员心率增长率都有一定的影响。最后,并针对桥隧连接段提出了基于平均速度差、加速度和心率增长率的评价方法。
In order to improve driving safety of tunnel-bridge linkage sections on freeways in mountainous areas in terms of optimization in geometrical alignment, the vehicle speeds at some specific points along tunnel-bridge linkage sections were measured, and real vehicle tests for drivers＇ psychophysiology indices were conducted. Furthermore, speed derivatives （average speed difference and acceleration） of vehicles and variations of drivers＇ psychophysiology indices at bridge-tunnel linkage sections were analyzed. The effects of commonly used combinations of bridges and tunnels including bridge-tunnel section, bridge-tunnel-bridge section, and tunnel-bridge-tunnel section on average speed difference of vehicles, acceleration and heart beat rate increment of drivers were quantitatively analyzed using mathematical statistics. The research results show that horizontal and vertical alignment of tunnel portal and length of linkage section between tunnels affect average speed difference, acceleration and heart beat rate increment to a certain extent. The safety evaluation methods based on average speed difference, acceleration and heart beat rate increment were provided for bridge-tunnel linkage sections.
出处
《公路交通科技》
CAS
CSCD
北大核心
2012年第12期125-132,共8页
Journal of Highway and Transportation Research and Development
基金
国家科技支撑计划项目(2009BAG13A02)
关键词
交通工程
桥隧连接段
数理统计
安全评价
平均速度
心率增长率
traffic engineering
bridge-tunnel linkage section
mathematical statistics
safety evaluation
average speed
heart beat rate increment
