普宣高速公路视距安全保障技术研究

发布时间：2018-04-16 15:13

本文选题：运行速度 + 行车视距　；参考：《长安大学》2015年硕士论文

【摘要】：近年来,我国高速公路的交通事故发生率一直居高不下,其中山区高速公路的地理条件和环境特征等较为特殊,限制了路线设计指标的选取,导致了小半径路段、桥隧路段、高填深挖路段和长大纵坡路段的比例较高,给道路的交通安全带来了隐患。视觉系统是驾驶员行车过程中最主要的信息来源,视距是否满足直接关系到道路的行车安全。现有规范中的行车视距主要是从设计速度的角度分别考虑了平曲线和竖曲线的影响,道路环境较为复杂时很难发现以下问题:①实际运行速度下的行车视距值可能大于设计速度下计算的行车视距值;②行车视距值与实际三维空间视距值可能相差较大。本论文以普宣高速公路初步设计阶段的设计资料为依据,根据视距规定的相关要求,比选了隧道路段运行速度预测模型,利用计算机软件的二次开发实现了普宣高速公路运行速度的程序化测算;采用运行速度对普宣高速全程的行车视距进行了检查,发现了可能存在的视距隐患路段;在《规范》要求的基础上实现了设计速度和运行速度下典型视距不良路段的三维视距检查及相应路段的驾驶员空间视野渲染;为更加形象生动地全面展示普宣高速公路真实视距情况,利用虚拟现实技术检查了隧道路段的视距;参照《规范》(送审稿)要求,分别建立了初步设计阶段、施工图阶段、交工阶段和运营阶段的视距评价内容及程序;对视距不良路段进行分类,提出了切实可行的视距保障措施,完善了我国的视距安全保障技术。
[Abstract]:In recent years, the traffic accident rate of expressway in our country has been high all the time. The geographical conditions and environmental characteristics of mountain expressway are very special, which restrict the selection of route design index, and lead to small radius section, bridge and tunnel section, etc.The proportion of high filling and deep digging section and long longitudinal slope section is high, which brings hidden trouble to road traffic safety.Visual system is the most important information source in driver's driving process. Whether the visual distance is satisfied or not is directly related to the driving safety of the road.The distance of sight in the current specification mainly considers the influence of plane curve and vertical curve from the angle of design speed.When the road environment is more complicated, it is difficult to find the following problem: 1. The driving sight distance under the actual running speed may be larger than that calculated under the design speed. The difference between the driving visual field value and the actual three dimensional visual field value may be quite large.Based on the design data of the preliminary design stage of Puxuan Expressway, according to the requirements of the sight distance, this paper compares and selects the forecast model of the running speed of the tunnel section.By using the secondary development of computer software, the programmed calculation of the running speed of Puxuan Expressway is realized, and the running speed is used to check the distance of sight in the whole journey of Puxuan Expressway, and the hidden hidden road section of the range of sight range is found.On the basis of the requirements of the specification, the 3D visual range inspection and the driver's space visual field rendering of the typical bad line-of-sight section under the design speed and the running speed are realized.In order to display the real visual distance of Puxuan Expressway more vividly and vividly, the visual distance of tunnel section was checked by using virtual reality technology, and the preliminary design stage and construction drawing stage were set up according to the requirements of "Standard" (draft submission).The content and procedure of the visual distance evaluation in the transition stage and the operation stage, the classification of the unfavorable section of the visual distance, the practical measures of the distance of sight safeguard are put forward, and the technology of the safety of the sight distance in our country is improved.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U492.8

【参考文献】