山区公路视距检验技术研究

发布时间：2018-10-14 18:35

【摘要】：驾驶员在行驶过程中,对道路信息的获取主要来自于视觉,视距是驾驶员视觉对道路线形和环境的量化,它直接的反映了道路本身的几何特征。因此,通过研究视距与道路线形的关系,对于道路设计、道路行车安全性检验和评价具有非常重要的意义。本课题针对道路线形与行车安全的关系,特别是道路线形对视距的影响情况,建立了平、纵路段的视距检验模型,对道路仿真平台进行二次开发,编写了视距检验模块,制定了道路安全性评价标准,运用仿真平台对实际道路进行视距安全检验及评价工作,并对检验和评价结果进行了详细的分析,找出原因所在。首先,分析公路安全检验的相关理论知识,确定视距对交通安全的影响程度,然后主要从道路线形、车速、公路绿化、天气四个方面详细分析视距与行车安全的关系,为模型的建立指明了方向。其次,以道路线形为切入点,提出以停车视距为检验参数的建模思想。运用坐标法,建立了分别满足最大横净距和满足纵坡最小坡长的平、纵路段的停车视距检验计算模型。再次,基于建立的视距检验模型,绘制了视距检验流程图,对道路仿真评价平台进行二次开发,编写了视距检验模块,在前人研究成果的基础上,制定了道路安全性评价标准。最后,选用一条真实道路,利用仿真平台绘制了设计视距、V85运行视距、计算模型视距的对比曲线图,对检验结果和评价结果进行分析。研究结果发现:在平曲线路段,随着平曲线半径的增大,视距差值逐渐增大,道路危险等级增加;在纵坡路段,随着纵坡坡长的减小,视距差值逐渐增大,道路危险等级也在增加。本课题的研究与运用,不仅是对视距检验技术的补充和完善,也是对道路安全评价技术研究的进一步完善。
[Abstract]:In the course of driving, the road information is mainly obtained from vision. Visual distance is the quantification of road alignment and environment by driver vision, which directly reflects the geometric characteristics of the road itself. Therefore, it is of great significance to study the relationship between sight distance and road alignment for road design, road safety inspection and evaluation. In view of the relationship between road alignment and driving safety, especially the influence of road alignment on visual distance, this paper establishes the visual range inspection model of horizontal and longitudinal sections, develops the road simulation platform again, and compiles the visual distance inspection module. The evaluation standard of road safety is established, and the actual road safety inspection and evaluation work is carried out by using the simulation platform. The results of inspection and evaluation are analyzed in detail, and the reasons are found out. First of all, it analyzes the relevant theoretical knowledge of highway safety inspection, determines the impact of visual distance on traffic safety, and then analyzes the relationship between sight distance and traffic safety in detail from four aspects: road alignment, speed, highway greening and weather. It points out the direction for the establishment of the model. Secondly, taking the road alignment as the starting point, the paper puts forward the idea of using the parking horizon as the test parameter. By using the coordinate method, a model for checking and calculating the parking sight distance of the longitudinal and horizontal sections is established, which satisfies the maximum transverse net distance and the minimum slope length, respectively. Thirdly, based on the established visual range test model, the flow chart of visual range inspection is drawn, the road simulation evaluation platform is redeveloped, and the visual distance test module is compiled. Based on the previous research results, the road safety evaluation standard is established. Finally, a real road is chosen, and the design horizon, the running horizon of V85 and the comparison curve of the model horizon are drawn by using the simulation platform, and the test results and evaluation results are analyzed. The results show that: in the section of horizontal curve, with the increase of the radius of horizontal curve, the distance of sight difference increases gradually, and the dangerous grade of road increases, while in the section of longitudinal slope, with the decrease of the length of longitudinal slope, the difference of sight distance increases gradually. Road hazard levels are also increasing. The research and application of this subject not only complements and consummates the technology of visual field inspection, but also further consummates the research of road safety evaluation technology.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U412.3

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