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为评价高速公路隧道进口段的安全性,保障车辆在隧道进口段的行车安全,对隧道路段车辆速度进行了观测,并开展了驾驶员心理生理指标的实车试验。在分析隧道路段车速和驾驶员心理生理指标变化特征的基础上,运用数理统计的方法建立了隧道进口平纵线形指标对车辆速度、平均速度差以及驾驶员心率增长率的影响关系模型。结果表明:隧道进口平纵线形对小型车速度和平均速度差影响较小,对大型车速度和平均速度差影响相对较大;平纵线形综合指标对驾驶员心率增长率影响明显。结合国内外相关研究成果,针对隧道进口段提出了基于平均速度差和驾驶员心率增长率的安全评价方法和评价标准。
In order to evaluate the safety of the entrance section of expressway tunnel, ensure the traffic safety of the vehicle at the entrance of the tunnel, observe the vehicle speed of the tunnel section and carry out the actual vehicle test of the driver’s psychological and physiological indexes. Based on the analysis of the changing characteristics of the driver’s psychophysical index and the speed of the tunnel, a mathematical model was established to analyze the influence of the horizontal alignment of the tunnel entrance on the vehicle speed, the average speed difference and the driver’s heart rate growth rate. The results show that the horizontal alignment of the tunnel entrance has little effect on the speed and average speed difference of small vehicles, but has a relatively large effect on the speed and average speed difference of large vehicles. The flat and linear comprehensive indexes have a significant impact on the driver’s heart rate growth rate. Based on the relevant research results both at home and abroad, a safety evaluation method and evaluation standard based on the average speed difference and driver heart rate growth rate are proposed for the tunnel entrance section.