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山区高速公路桥隧连接段安全评价技术

, PP. 125-132

Keywords: 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

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Abstract:

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.

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