山区双车道公路车辆速度对行驶安全影响的研究

发布时间：2018-06-07 17:40

本文选题：山区公路 + 车速　；参考：《吉林大学》2014年硕士论文

【摘要】：我国是一个多山区国家，山区公路在我国公路总里程中占有较大比例。受地形影响，山区公路几何线形复杂多变，交通事故发生率较高，且重特大交通事故比例较大。针对山区公路严峻的交通安全现状，开展了山区公路行车安全的相关研究，尤其关注车辆行驶速度、速度梯度、道路几何线形等因素对行车安全的影响。根据对车辆行驶安全性的分析，依据道路线形几何参数（坡度和转弯半径）将道路划分为直线段、纵坡段、平曲线段和弯坡组合段等四种基本道路类型。结合车辆在各种基本道路类型下的受力情况，构建了车辆理论行驶速度的预测模型。车辆在道路上行驶，其行驶速度会受到路侧净空、路况、车道数、气候状况以及道路安全设施等道路环境因素的影响。综合考虑以上各影响因素，得到车辆的运行速度，继而分析车辆行驶安全性。利用车辆运行试验平台，在某山区公路采集道路平曲线（半径）、高程和车速等数据，并建立了试验道路几何参数数据库。以山区公路K7600~K7900K42900~K43200和K47200~K47500三个路段为例，根据预测模型仿真得到车辆在各路段上的理论行驶速度。基于对试验路段路侧净空、路况、车道数、大车混入率和道路安全设施等的调查数据，确定各影响系数值，得到车辆的修正行驶速度，继而得到车辆的运行速度。结合试验路段的道路法定速度，确定车辆运行的危险区段。分析危险区段的道路线形状况，找出了导致驾驶人危险行车的原因。针对危险区段的行车安全提出了具体的建议。
[Abstract]:Our country is a mountainous country , mountain highway occupies a large proportion in the total mileage of highway in our country . Affected by topography , the geometric shape of mountain road is complex and changeable , the traffic accident rate is high , and the proportion of heavy traffic accidents is large . In view of the present situation of traffic safety in mountainous highway , the relevant research on highway driving safety in mountain area is carried out .

According to the analysis of vehicle driving safety , four basic road types , such as straight section , longitudinal slope section , flat curve section and curved slope combination section , are divided into straight section , longitudinal slope section , flat curve section and curved slope combination section according to road linear geometric parameters ( slope and turning radius ) , and the prediction model of vehicle theoretical travel speed is constructed in combination with the force of vehicle under various basic road types .

The running speed of the vehicle will be affected by road side clearance , road condition , number of lanes , weather conditions and road safety facilities , etc . The running speed of the vehicle will be comprehensively considered to obtain the running speed of the vehicle , and then the vehicle driving safety is analyzed .

Using vehicle running test platform , the data of road level curve ( radius ) , elevation and vehicle speed are collected in a mountain road , and the experimental road geometric parameter database is established . Based on the investigation data of road side clearance , road condition , lane number , vehicle mixing rate and road safety facility , the influence coefficient values are determined to get the vehicle ' s corrected running speed , and then the running speed of the vehicle is obtained .

According to the road speed of the test road section , the dangerous section of the vehicle operation is determined . The road alignment condition of the dangerous section is analyzed , the causes of the dangerous driving of the driver are found out , and the concrete suggestions are put forward for the driving safety of the dangerous section .
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U492.84

【参考文献】