大型桥梁交通拥堵分析与疏散策略研究

发布时间：2018-05-02 20:21

本文选题：大型桥梁 + 交通拥堵　；参考：《首都经济贸易大学》2017年硕士论文

【摘要】：随着我国经济实力的增强,城市交通形式已经呈现出多样化发展,不仅有“平面交通”,也出现了“立体交通”。为了满足日益增长的交通需求,也为了提高城市交通路网的运行效率,我国在各大城市建立了大量的桥梁。但是伴随着机动车的快速增长,过桥流量的日益增多,导致桥梁上交通拥堵的现象越发严重,特别是在节假日等高峰期时,大型桥梁上的拥堵状况更为凸显。桥梁作为高速公路交通网络的咽喉,如果出现交通拥堵,不仅会给经济社会带来巨大损失,还会影响我国交通系统的发展。因此研究大型桥梁上拥堵问题,并对其提出相应的疏散策略,是解决当前桥梁拥堵问题的基础性工作之一。本论文的研究主要做了以下工作。首先,本文对大型桥梁上交通拥堵进行了理论研究。先分析了交通拥堵的形成过程,然后介绍了交通拥堵形成的原因和评价指标,总结了大型桥梁上交通拥堵的特殊性,为后续仿真实验奠定理论基础。其次,本文对造成交通拥堵的各种原因进行仿真实验。选取南京长江二桥为研究对象,该桥梁在收费站交通瓶颈处极易出现拥堵现象,是桥梁里面的一种典型结构。根据调查的实际数据,建立仿真模型,并对造成拥堵的各种原因进行仿真模拟,为疏散交通策略提供定量的分析。最后,针对桥梁上的拥堵问题提出了相应的疏散策略。仿真结果表明,在实施这些策略以后,能有效的降低交通瓶颈处的拥堵规模,提高桥梁路段的通行能力。
[Abstract]:With the strengthening of our country's economic strength, urban traffic forms have been diversified, not only "plane traffic", but also "three-dimensional traffic". In order to meet the increasing traffic demand and improve the efficiency of urban traffic network, a large number of bridges have been built in our country. However, with the rapid growth of motor vehicles and the increasing traffic flow, traffic congestion on bridges becomes more and more serious, especially during the peak periods such as holidays, the congestion on large bridges is more prominent. Bridge as the throat of highway traffic network, if there is traffic jam, it will not only bring huge losses to the economy and society, but also affect the development of our country's transportation system. Therefore, it is one of the basic work to solve the congestion problem of large bridges to study the problem of congestion on large bridges and put forward the corresponding evacuation strategy. The main work of this thesis is as follows. First of all, this paper studies the traffic congestion on large bridges. This paper analyzes the forming process of traffic congestion, then introduces the causes and evaluation indexes of traffic congestion, summarizes the particularity of traffic congestion on large bridges, and lays a theoretical foundation for subsequent simulation experiments. Secondly, this paper carries on the simulation experiment to each kind of reason which causes the traffic jam. Nanjing No. 2 Yangtze River Bridge is chosen as the research object. The bridge is prone to congestion at the traffic bottleneck of toll station and is a typical structure in the bridge. According to the actual data of the investigation, the simulation model is established, and the various causes of congestion are simulated to provide quantitative analysis for the evacuation traffic strategy. Finally, the corresponding evacuation strategy is put forward for the congestion problem on the bridge. The simulation results show that the implementation of these strategies can effectively reduce the traffic bottleneck of the scale of congestion and improve the capacity of the bridge section.
【学位授予单位】：首都经济贸易大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.265

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