福建山区二级公路期望速度研究

发布时间：2018-04-11 11:12

本文选题：期望速度 + 路侧环境　；参考：《福建农林大学》2017年硕士论文

【摘要】：近年来,随着经济的快速发展和人均的生活水平的提高,道路交通事故已经成为一个全国高度关注的严重社会问题,特别是山区公路,地形复杂。虽然山区公路交通事故相对数较少,但山区公路的急弯、临河、临崖等危险路段所占的比较比较多,因此造成的重特大恶劣事故比较很高。在研究道路交通安全领域中,道路交通安全预评价是其一个重要的分支。运行速度预测是道路交通安全预评价中最为核心的内容之一,但是对车辆运行速度进行预测,首先必须确定该路段的期望速度,基于此,本文对福建山区二级公路期望速度进行研究,以提高福建山区二级公路道路交通安全水平。首先,本文对期望速度的特性研究进行分析。介绍期望速度的基本概念,从期望速度的行成机理进行了分析,并对期望速度的影响因素进行分析以及阐述交通安全分析中期望车速的应用。其次,基于国内外研究现状对期望速度的研究,确定研究因素和实验方案,对福建山区二级公路弯道危险路段不同路侧环境以及不同防护形式条件下期望速度与运行速度的关系进行问卷调查。基于问卷调查,对弯道路段下不同断面的速度、不同路侧环境、不同防护形式、不同车型以及不同半径等数据进行采集和分析。最后,采用控制变量法研究在不同因素影响下期望速度的变化特性。在数理统计分析的基础上,采用直观分析和方差分析两种方法,研究不同因素影响条件下对弯道车辆期望速度的变化规律以及不同因素影响条件下对弯道期望速度的影响程度,同时基于分析数据在临水临崖路段建立大小车型在不同防护条件下期望速度与弯道半径的关系模型。
[Abstract]:In recent years, with the rapid development of economy and the improvement of per capita living standard, road traffic accidents have become a serious social problem which is highly concerned by the whole country, especially the mountain road, the terrain is complex.Although the number of road traffic accidents in mountainous areas is relatively small, the number of dangerous road sections such as sharp bends, rivers, cliffs and other dangerous sections of mountain roads is relatively high, and the serious and serious accidents caused by these accidents are very high.Pre-evaluation of road traffic safety is an important branch in the field of road traffic safety.The prediction of running speed is one of the most important contents in road traffic safety pre-evaluation. However, in order to predict the running speed of vehicles, it is necessary to determine the expected speed of the road first.In this paper, the expected speed of second-class highway in Fujian mountainous area is studied in order to improve the traffic safety level of second-class highway in Fujian mountainous area.First of all, this paper analyzes the characteristics of the expected velocity.This paper introduces the basic concept of expected speed, analyzes the mechanism of expected speed, analyzes the influence factors of expected speed and expounds the application of expected speed in traffic safety analysis.Secondly, based on the current situation of domestic and foreign research on the expected speed, the research factors and experimental scheme are determined.A questionnaire survey was conducted on the relationship between the expected speed and the running speed of the dangerous section of the second grade highway in Fujian mountainous area under different roadside environments and different protection forms.Based on the questionnaire survey, the data of different section velocity, different side environment, different protection form, different vehicle type and different radius were collected and analyzed.Finally, the change characteristics of expected velocity under the influence of different factors are studied by using the control variable method.On the basis of mathematical statistical analysis, using two methods, intuitionistic analysis and variance analysis, the variation law of expected speed of curved vehicle under different factors and the degree of influence on expected speed of bend under different factors are studied.
【学位授予单位】：福建农林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491

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