互通式立交的方案设计与评价方法研究

发布时间：2018-04-28 07:25

本文选题：互通立交 + 评价方法　；参考：《重庆交通大学》2015年硕士论文

【摘要】：交通需求随着社会经济的不断发展,不仅在数量上呈现急剧增加的趋势,而且对交通质量也是不断的要求提高,由此造成了日益严重的交通问题,路网的交通压力居高不下。立交作为路网交通枢纽的一种高级形式,具有交通流快速转换的功能,其在路网中的地位必将越来越重要。立交设计方案的优劣的影响将会是多方面的,这其中包括工程的投资额、社会经济方面的效益、交通流的服务水平以及行车安全等。自从诞生立交结构以来,它就因为能够较好的提高交通流量而被应用在道路建设中,实践证明,立交在道路通行能力方面扮演着重要的角色。影响立交选型的因素很多,其中有自然地形、通行能力、相交道路等级、收费要求等。减少或避免冲突点形成、保证交通安全、减少延误及提高通行能力是立交相对于传统的平交口的优势,但凡事都有两面性,如建设周期长、绕行距离长及建设资金高等就是它的缺点。因此,根据道路交通特点选择适当的立交型式就显的相当重要。现有的立交方案评价方法存在过于简单化比如技术经济评价法,或是计算非常繁琐,工作量很大如灰度理论评价法,或是难于获取资料如神经网络法等问题,本文结合了模糊数学与层次分析法的优势进行立交方案评价。论文主要研究的内容有:①本文在分析了国内外立体交叉的发展进程、存留问题的基础上,将常用的互通式立体交叉的形式分类列出并详细说明其优缺点。②本文针对互通式立交在规划设计过程中的重要影响因素—交通量预测进行了分析,实例中运用了VISSIM软件进行了交通量分布分析,结合其他影响因素对怎样比选出最优的方案进行了研究。③运用层次分析法建立立交选型的指标体系,利用模糊综合评价法来确定隶属度函数,运用新的算法计算各指标权重,通过运算得出最优的评价方案。④最后,结合广西南宁市友谊-白沙大道的立交,以实际工程检验模糊综合评价法在立交方案选型中的运用,验证了该方案评价的科学性与实用性。
[Abstract]:With the development of social economy, traffic demand is not only increasing rapidly in quantity, but also improving traffic quality. As a result, traffic problems become more and more serious and traffic pressure on road network remains high. As an advanced form of road network transportation hub, interchange has the function of rapid traffic flow conversion, and its position in the road network will become more and more important. The influence of the design scheme of interchange will be in many aspects, including the investment of project, the benefit of social economy, the service level of traffic flow and the safety of traffic, etc. Since the birth of the interchange structure, it has been used in the road construction because it can improve the traffic flow. The practice has proved that the interchange plays an important role in the capacity of the road. There are many factors affecting interchange selection, including natural terrain, traffic capacity, intersecting road grade, toll requirements and so on. Reducing or avoiding the formation of conflict points, ensuring traffic safety, reducing delays and improving traffic capacity are the advantages of an interchange over the traditional horizontal intersection, but there are two sides to everything, such as a long construction period. Long detour and high construction funds are its disadvantages. Therefore, it is very important to choose the appropriate interchange type according to the characteristics of road traffic. The existing evaluation methods of interchange schemes are too simplistic, such as technical and economic evaluation methods, or the calculation is very complicated, the workload is very heavy, such as gray theory evaluation method, or it is difficult to obtain data such as neural network method, and so on. This paper combines the advantages of fuzzy mathematics and analytic hierarchy process (AHP) to evaluate the interchange scheme. The main contents of this paper are: 1. On the basis of analyzing the development process of intersecting and existing problems at home and abroad, The common form of interchange is classified and its merits and demerits are explained in detail in this paper, the traffic volume prediction, which is an important influence factor of interchange in the process of planning and design, is analyzed. In this paper, VISSIM software is used to analyze the traffic volume distribution, and how to compare the optimal scheme with other influencing factors is studied. 3. The index system of interchange type selection is established by using the analytic hierarchy process (AHP). The fuzzy comprehensive evaluation method is used to determine the membership degree function, and the new algorithm is used to calculate the weight of each index. Finally, the optimal evaluation scheme .4 is obtained by calculation. Finally, combining with the interchange of Friendship and Baisha Avenue in Nanning, Guangxi, The application of fuzzy comprehensive evaluation method in practical engineering test in the selection of interchange scheme is proved to be scientific and practical.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U412.352.1

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