模糊数学在交通拥堵状态评价中的应用毕业设计论文.doc 全文

模糊数学在交通拥堵状态评价中的应用 摘 要 交通拥堵已成为困扰当前城市发展的难题,目前国内外很多城市交通拥堵状况仍旧比较严重,我国的机动车拥有量及道路交通流量急剧增加,日益增长的交通需求与城市道路基础设施建设之间的矛盾已成为目前城市交通的主要矛盾,由此导致交通拥挤和堵塞现象频频发生。交通拥堵严重地影响了人们的日常出行活动,制约着城市经济的发展。 本文通过调查和分析,建立了交通拥堵模糊评价模型。综合行程速度、行程延误、停车次数、停车时间以及负荷度五种评价指标,对江门市区路网实际调研的数据进行回归拟合分析,确定每种指标的评价参考标准,最终形成科学的交通拥堵模糊评价模型,根据交通拥堵指数的概念评价城市路网的拥堵严重程度。 利用本文的模型,可以通过采集到的交通数据,实现对城市路网的定性和定量分析,得出相应路网的交通拥堵系数的大小,确定每个路网的拥堵严重程度,为交通管理部门提供科学合理的依据。 关键词 交通拥堵;状态评价;模糊;评价指标;交通拥堵指数 Abstract Traffic congestion has become a problem of the current situation of city development, traffic congestion in many city at home and abroad is still relatively serious, vehicle our capacity and traffic flow increases rapidly, the contradiction between the increasing traffic demand and city road infrastructure construction has become the main contradiction of the city traffic, causing traffic congestion and blocking phenomenon occurred frequently. Traffic congestion has seriously affected people's daily trips, restricts the development of city economy. Through the investigation and analysis, established the fuzzy evaluation model of traffic congestion. Then set the evaluation index such as Travel speed, Travel delay, the frequency of parking, parki