【摘要】 为研究公路连续长坡路段驾驶员心率与曲线半径的关系,提高行车安全,选取9名驾驶员进行实际道路试验。用多导生理记录仪采集驾驶员的心率数据,按上、下坡方向将试验路段的每个曲线划分为7个位置,分别对上、下坡方向每个位置驾驶员的心率增长率和曲线半径的关系进行回归分析,建立相应的模型,并对每个位置的模型进行分析,提出合理的曲线半径设置建议。综合上、下坡方向各位置的曲线半径研究结论提出合理的曲线半径取值建议,公路连续长坡路段曲线半径在r≥900 m和200 m≤r≤300 m内取值。更多还原

【Abstract】 The present paper intends to report the results of an experimental study on the relationship between the drivers’ heartbeating rate and the curve radii of the long and steep slope driving. The purpose of the paper is to find the relation between the driver’s driving psychology and the curve radius of long and steep slope in terms of their driving experience. As is known,in recent years,serious accidents have been taking place as the result of long and steep slope driving in the road segments. From the point of view of highway road design,more and more inefficiencies have been exposed in the traditional road alignment design theory in guiding the alignment design of long and steep slopes. Based on the analysis of the experimental results,we have proposed a more reasonable and rational design project for the curve radius of long and steep slopes in hoping to improve the traffic safety and relieve the drivers of the psychological stress. In doing so,we have organized an investigative experiment by selecting a group of 9 drivers( study subject) randomly to participate in the horizontal alignment of the road test,in which,we have collected 7 positions in uphill and downhill directions respectively by using GPS. In our experiment,we have tested and collected the driver’s heartbeating rate by using a multi-channel physiological recorder,and then analyzed the increasing rate of the heart-beating rate as the representative indicator of their driving psychology. For each position in the uphill and downhill direction,we have established a regression model showing the relation between the driver’s growth rate of heart-beating rate and the curve radius. Besides,we have put forward a reasonable curve radius of each position based on the mathematical models. And,finally,a conclusion has been made in this paper that the curve radius of long and steep slope should be built up in a range of r ≥900 m and 200 m≤ r ≤300m,which proves to be more beneficial and advantageous for the traffic and transportation safety. Therefore,the result of our experimental study is likely to provide some theoretical support for the design of the curve radius of long and steep slope driving.更多还原