基于驾驶员心率变化的宁夏公路行车安全及排水优化研究

发布时间：2018-05-16 12:24

本文选题：公路 + 驾驶员　；参考：《宁夏大学》2017年硕士论文

【摘要】：在雨天行车时,往往由于驾驶员生理、心理负荷的增加而导交通事故。随着宁夏地区雨天的交通安全问题日益严重,宁夏地区的雨天交通安全问题已经成为研究的重要方面。通过分析,交通事故的直接原因是道路线形条件和环境因素对驾驶员的综合影响。本文基于不同的天气条件下的行车试验,观察天气和道路线形条件耦合作用对驾驶员的影响,应用数理统计方法,对驾驶员在平曲线、直线段、弯坡组合路段晴雨天的行车规律进行总结,规律如下:在直线段纵坡对行车无影响的路段进行分析,发现在晴天、雨天心率突变范围基本一致。而对于直坡组合路段。运用分组讨论的方法,对不同的坡长、坡度组合进行分析得出在坡度大于3%时为雨天行车不利路段。在曲线段纵坡对行车无影响的条件下,在京藏高速和109国道行车时当半径R2740m和R665m时为雨天行车不利路段。在弯坡组合路段,通过速度和心率增量综合评价晴雨天的行车安全,得出雨天在弯坡度越大时行车越不安全。最后,根据宁夏地区的水文条件进行边沟的水文计算,应用数值模拟对针对雨天行车不利的路段排水口模拟,得出当开口宽度为1.25m的曲线式排水口,当排水口间距为400m时更合适于排水。
[Abstract]:When driving on rainy days, traffic accidents are often caused by the increase of physiological and psychological load of drivers. With the increasingly serious problem of traffic safety in rainy days in Ningxia area, the problem of traffic safety in rainy days in Ningxia area has become an important aspect of research. The direct cause of traffic accidents is the comprehensive influence of road alignment and environmental factors on drivers. Based on the driving tests under different weather conditions, the effects of coupling of weather and road alignment conditions on drivers are observed in this paper. The rules of driving on sunny and rainy days in curved and slope combination sections are summarized. The results are as follows: the results show that the range of heart rate mutation in rainy days is basically the same when the longitudinal slope of straight section is not affected by driving. And for straight slope combination section. By using the method of group discussion, different slope length and slope combination are analyzed. It is concluded that when the slope is greater than 3, it is unfavorable for driving on rainy days. Under the condition that the longitudinal slope of the curve section has no influence on the driving, it is unfavorable for driving on rainy days when the running radius of R2740m and R665m is at Beijing-Tibet Expressway and 109 National Highway. In the combination section of curved slope, the safety of driving on rainy and sunny days is comprehensively evaluated by speed and heart rate increment, and it is concluded that driving on rainy days is more unsafe when the degree of bending slope is higher. Finally, according to the hydrological conditions of Ningxia area, the hydrological calculation of the edge ditch is carried out, and the numerical simulation is used to simulate the drainage outlet of the section which is unfavorable for driving on rainy days, and the curve drainage outlet with the opening width of 1.25m is obtained. When the spacing of the drain is 400 m, it is more suitable for drainage.
【学位授予单位】：宁夏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.254;U417.3

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