信号交叉口机非隔离设施设置条件分析

发布时间：2018-01-27 08:06

本文关键词： 机非隔离膨胀消散机非冲突服务水平设置条件　出处：《东南大学》2015年硕士论文　论文类型：学位论文

【摘要】：大部分城市交叉口都通过物理隔离的形式将机动车与非机动车分隔,但关于设置隔离条件的研究并不多见,并且对于不同道路和交通流量条件下,选择何种形式的隔离以及隔离设施宽度的确定也没有详细的说明。本文以城市信号交叉口为研究对象,通过调查多个设有不同机非隔离形式的交叉口,分析非机动车的运行特性；其次分析交叉口机非冲突的影响因素,考虑显著因素并建立机非冲突数模型：基于非机动车骑行者对交叉口安全的感知评价构建服务水平模型,以机非冲突数作为服务水平的评价指标,并给出不同服务水平等级下交叉口机非隔离设施的设置形式及宽度。首先,选择设有不同机非隔离形式的交叉口设计调查方案,通过调查数据的统计分析,分别对非机动车的排队等候、车群膨胀和车群消散过程进行描述,得到交叉口进口道非机动车排队密度与车道宽度、电动自行车比例的回归关系式。以非机动车膨胀宽度和膨胀数来分析非机动车在交叉口的膨胀特性,并对膨胀宽度和膨胀数的计算模型进行理论推导。通过分析非机动车在交叉口的消散行为,建立基于非机动车消散选择行为的logistic模型,并最终得出非机动车二次膨胀数的计算公式。其次,从交叉口机非冲突的概念及产生机理出发,通过对机非冲突的影响因素分析,确定机非冲突的可能影响因素有机动车排队量、非机动车膨胀数和二次膨胀数。通过偏相关分析确定机非冲突数的主要影响因素,利用实际数据对机非冲突数进行多元回归,得到机非冲突数与非机动车膨胀数以及二次膨胀数的回归模型,并对其进行检验。最后,根据本文对交叉口机非隔离设施服务水平的定义,基于非机动车骑行者对交叉口安全状况感受的定量描述,以机非冲突数作为服务水平的评价指标。运用系统聚类与模糊聚类的方法将冲突数调查样本分为8个类别,并对交叉口机非隔离设施服务水平的分级进行了研究,在8类冲突数样本的基础上,通过调整,最终将服务水平划为六个等级。本文最终给出了在不同服务水平等级下交叉口机非隔离设施的设置方案(包括进出口道机非隔离的形式及宽度)。本文对交叉口非机动车运行特性、机非冲突特性、服务水平和设置条件的研究成果,对于城市交通规划、设计与管理具有理论和实践意义。
[Abstract]:Most urban intersections separate motor vehicles from non-motor vehicles in the form of physical isolation, but the research on setting isolation conditions is rare, and for different road and traffic flow conditions. The choice of the form of isolation and the width of isolation facilities is not explained in detail. This paper takes the urban signal intersection as the research object, through the investigation of many intersections with different machine and non-isolation forms. The operating characteristics of non-motor vehicles are analyzed. Secondly, the influence factors of intersection non-conflict are analyzed, and the significant factors are considered and the model of non-conflict number is established. The service level model is constructed based on the perception of non-motorized riders to the safety of intersections. Take the number of machine non-conflict as the evaluation index of service level, and give the setting form and width of non-isolation facilities of intersections under different levels of service. First of all. Through the statistical analysis of the survey data, this paper describes the process of queue waiting, vehicle group expansion and vehicle dispersal of non-motor vehicles. The regression relationship between the queue density and lane width and the proportion of electric bicycle at the intersections is obtained. The expansion characteristics of non-motor vehicles at intersections are analyzed by the expansion width and expansion number of non-motor vehicles. The calculation model of expansion width and expansion number is derived theoretically. By analyzing the dissipation behavior of non-motor vehicles at intersections, a logistic model based on the behavior of non-motor vehicle dissipation selection is established. Finally, the calculation formula of non-motor vehicle secondary expansion number is obtained. Secondly, starting from the concept and mechanism of non-conflict of intersections, the influence factors of non-conflict are analyzed. The possible factors to determine the non-conflict are vehicle queue number, non-vehicle expansion number and secondary expansion number. The main influencing factors of engine non-conflict number are determined by partial correlation analysis. By using the actual data, the regression model of non-collision number, non-vehicle expansion number and secondary expansion number is obtained, and it is tested. Finally, the regression model of engine non-conflict number, non-motor vehicle expansion number and secondary expansion number is obtained. According to the definition of the service level of the intersections' non-isolation facilities, based on the quantitative description of the non-motorized cyclists' perception of the intersection safety conditions. Taking the non-conflict number as the evaluation index of service level, the conflict number survey samples are divided into eight categories by the methods of systematic clustering and fuzzy clustering. The classification of the service level of non-isolation facilities at intersections is studied. Based on the 8 kinds of conflict number samples, the adjustment is carried out. Finally, the service level is divided into six grades. Finally, this paper gives a scheme of setting up the non-isolation facilities of intersections under different service levels (including the form and width of non-isolation of the entrance and exit lanes). In this paper, the operating characteristics of non-motor vehicles at intersections are discussed. The research results of non-conflict characteristics, service level and setting conditions are of theoretical and practical significance for urban traffic planning, design and management.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491

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