考虑侧风影响下的渔平高速公路限速研究

发布时间：2018-01-14 02:32

本文关键词：考虑侧风影响下的渔平高速公路限速研究　出处：《福建农林大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国汽车工业的稳步发展与道路工程技术水平的持续提高,道路能够允许车辆的行驶速度也随之提升,然而,高速在给人类带来便利与生产效率提高的同时,也提高了影响驾驶员与车辆的危险性,同比与低速行车状态,车辆在高速行驶的情况下,对于交通环境影响因素的反应更为敏感。侧风作为环境影响因素之一,由于其具有随机性、不可预见性、不可视性等特点,作用于车辆时会对车辆产生突发性影响,驾驶员往往来不及反应而酿成交通事故,随着车速的上升,车辆受到侧风的影响将更为显著,而现有的限速制定中大多未考虑侧风因素,因此,需要对处于侧风环境下的高速公路限速进行分析与研究。渔平高速作为连接渔溪镇与平潭岛的交通要道,由于其坐落于龙高半岛且呈东西走向,极易受到来自南北方向的季风影响,因此,本文主要对渔平高速公路上小轿车在侧风作用下的渔平高速的安全车速进行研究。论文首先简要概述侧风作用下车辆气动六分力的变化情况以及现有的高速公路限速方式；接着在分析渔平高速公路区域的线形条件、主体走向、交通现状以及风况数据的基础上,对考虑侧风影响下的渔平高速公路进行限速路段的划分。论文从研究侧风影响下的行驶车辆气体动力学升力变化的角度出发,结合现有高速公路限速方法,根据不同的季节、路段所提供的风况对侧风作用下车辆的安全制动距离进行研究,并与道路线形提供的视距进行对比,得出考虑气动升力变化的满足安全制动距离的限速值；同时,考虑侧风影响下的行驶车辆的悬架与轮胎的非对称变化,结合气动升力与气动侧向力的变化特性,使用多系统动力学仿真软件ADAMS中的Car模块进行考虑侧风影响下小轿车仿真模拟,模拟侧风作用下侧移情况的开环仿真,对比车辆侧移安全限值；综合两项研究的对比结果,归纳出考虑侧风影响下的渔平高速公路不同路段的建议限速值,并提出分路段限速所需的限速辅助措施,为渔平高速限速提出更加科学的管理依据。最后,总结了论文的主要研究成果,并提出考虑侧风影响下的高速公路限速的未来展望。
[Abstract]:With the steady development of China's automobile industry and the continuous improvement of road engineering technology, the speed of vehicles allowed by the road can also be increased, however. High speed not only brings convenience and production efficiency to human beings, but also increases the risk of affecting drivers and vehicles, compared with the low speed driving state, the vehicle in the case of high-speed driving. As one of the environmental factors, crosswind has the characteristics of randomness, unpredictability and invisibility. Acting on the vehicle will have a sudden impact on the vehicle, drivers often have no time to react and lead to traffic accidents, with the increase of speed, the vehicle will be more significantly affected by the crosswind. However, most of the existing speed limits do not consider crosswind factors. Therefore, it is necessary to analyze and study the speed limit of freeway in crosswind environment. Yuping high speed is used as a traffic link between Yuxi Town and Pingtan Island. Because it is located on the Longgao Peninsula and is east-west, it is easily affected by the monsoon from the north to the south. This paper mainly studies the safe speed of Yuping high speed on Yuping Expressway under the action of crosswind. Firstly, the paper gives a brief overview of the change of aerodynamic six component force of vehicle under crosswind and the existing freeway. Speed limit mode; Then on the basis of analyzing the alignment condition, the main body direction, the current traffic situation and the wind condition data of Yuping Expressway area. The speed limit section of Yuping Expressway under the influence of crosswind is divided. From the point of view of studying the aerodynamic lift change of driving vehicle under the influence of crosswind, combined with the existing speed limit method of freeway. According to different seasons, the wind condition provided by the road section is used to study the safe braking distance of the vehicle under the action of cross-wind, and compared with the line-of-sight provided by the road alignment. The speed limit value which can satisfy the safety braking distance considering the change of aerodynamic lift is obtained. At the same time, considering the influence of cross-wind on the vehicle suspension and tire asymmetric changes, combined with the aerodynamic lift and aerodynamic lateral force change characteristics. The Car module of the multi-system dynamics simulation software ADAMS is used to simulate the car under the influence of crosswind, and the open-loop simulation of the sidewalk under the crosswind is simulated, and the safety limit of the lateral shift of the vehicle is compared. Synthesizing the comparative results of the two studies, the proposed speed limit values of different sections of Yuping Expressway under the influence of crosswind are summarized, and the auxiliary measures of speed limit are put forward. Finally, the main research results of this paper are summarized, and the future prospect of speed limit of expressway considering the influence of crosswind is put forward.
【学位授予单位】：福建农林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491

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