高速公路交通事故传播规律及分流措施应用研究

发布时间：2018-06-18 21:00

本文选题：高速公路交通事故 + 交通波传播模型　；参考：《长安大学》2015年硕士论文

【摘要】：高速公路因其安全、快捷、舒适的行驶环境成为我国交通运网中不可或缺的组成部分。近年来,随着社会经济的不断发展,汽车保有量连年激增,但高速公路网初步建立,较为脆弱,运营稳定性有待提高。高速公路上车流流量较大,一旦发生事故,整个路网都将受到影响,因此研究分析交通事故影响规律对提高道路管理水平、保障路网安全可靠性的意义重大。本文以《河北省区域高速公路网安全性评价和应急研究》项目为依托,研究事故条件下的交通流变化特性,分析影响事故传播消散的关键因素,探究事故影响区域车辆可能的运行情况,得出车辆的延误时间,进而提出分流措施的实施方案。本文首先以交通波理论为基础,分析事故持续时间、拥挤传播和消散过程,得出高速公路上的事故传播模型。其次通过对不同交通流的车流速度分析,得出受事故影响的车辆速度分布情况,建立车辆在不同情况下通过事故路段的延误时间计算模型,提出绕行措施的影响因素。最后分析交通拥挤处理措施,提出影响分流措施实施的三个关键参数,在延误时间计算模型的基础上具体给出分流量大小和分流开始及结束时间的计算公式,并讨论通过蚁群算法寻找分流最优路径的方法,综合得出分流措施的具体实施方案。
[Abstract]:Because of its safe, fast and comfortable driving environment, freeway becomes an indispensable part of transportation network in our country. In recent years, with the continuous development of social economy, the number of vehicle ownership has increased sharply, but the highway network is initially established, relatively fragile, and the operational stability needs to be improved. The traffic flow on the freeway is large, once the accident happens, the whole road network will be affected, so it is very important to study and analyze the influence law of the traffic accident to improve the road management level and ensure the safety and reliability of the road network. Based on the project "Safety Evaluation and Emergency Research of Hebei Regional Expressway Network", this paper studies the characteristics of traffic flow under accident conditions, and analyzes the key factors that affect the dissipation of accident propagation. This paper probes into the possible operation of vehicles in the area affected by the accident, obtains the delay time of the vehicles, and then puts forward the implementation scheme of the diversion measures. Based on the theory of traffic wave, this paper first analyzes the duration, congestion propagation and dissipation process of the accident, and obtains the accident propagation model on the expressway. Secondly, by analyzing the vehicle flow velocity of different traffic flow, the distribution of vehicle speed affected by accident is obtained, and the calculation model of delay time of vehicle passing through the accident section under different circumstances is established, and the influencing factors of detour measures are put forward. Finally, the traffic congestion treatment measures are analyzed, and three key parameters affecting the implementation of diversion measures are put forward. On the basis of the delay time calculation model, the calculation formulas of the flow size and the start and end time of the diversion are given in detail. The method of finding the optimal path of shunt by ant colony algorithm is discussed, and the concrete implementation scheme of shunt measure is obtained synthetically.
【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】：U491.31

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