考虑窄路密网布局理念的城市路网容量研究

发布时间：2018-11-17 13:35

【摘要】：针对传统“宽马路,疏路网”布局理念下城市道路网滋生的交通问题,窄路密网布局理念成为我国城市路网布局的新趋势。在这样的背景下,把握城市路网特性,精准地计算路网容量,对于从总体上估计路网供给能力,有针对性的进行交通规划与管理有重要意义。因此,论文考虑新布局理念下路网特性变化对路网容量的影响,构建适用于窄路密网布局理念下路网的容量模型。从路网结构、路网密度、道路宽度、交通组织、交叉口五个方面分析窄路密网布局理念下路网特性,并结合路网功能协调性、机动化水平、交通管理、公交适应性、行人过街需求五个界定因素和相关规划经验,界定新布局理念下路网特性指标。通过SD(System Dynamics)模型的因果链筛选道路交通条件中对路网容量产生影响的关键因素;分别从路网布局机理、交通个体路径选择过程和结果的角度,分析路网供给与交通需求匹配程度、交通个体路径选择对路网容量的影响;结合窄路密网布局特性,总结该特性对路网容量的影响。基于经典的时空消耗思想,考虑窄路密网布局特性的影响,分别讨论路网时空总资源和交通个体时空消耗的计算模型,并考虑服务水平、交通组织、横断面形式、供给与需求的匹配程度对模型进行修正,并给出模型计算流程。以昆明呈贡新区低碳示范区为例,应用构建的模型,对比分析其加密路网前后的路网布局特性及路网容量,评估容量改变效果,并总结模型应用前景。本文构建的窄路密网布局理念下路网容量模型,充分考虑新布局理念下路网特性及其对容量的影响,更适用于城市路网规划新趋势下容量的计算。
[Abstract]:In view of the traffic problems arising from the traditional "wide road, sparse road network" layout concept, the narrow road network layout concept has become a new trend of urban road network layout in China. Under this background, it is important to grasp the characteristics of urban road network and calculate the capacity of road network accurately, which is of great significance to estimate the supply capacity of road network as a whole and to carry out traffic planning and management. Therefore, considering the influence of the change of road network characteristics on the capacity of the road network under the new layout concept, the capacity model of the road network under the concept of narrow road dense network layout is constructed. This paper analyzes the road network characteristics under the concept of narrow road network layout from five aspects: road network structure, road network density, road width, traffic organization and intersection, and combines network function coordination, motorization level, traffic management, public transport adaptability. Five defining factors of pedestrian crossing demand and relevant planning experience are defined to define the road network characteristic index under the new layout concept. The causality chain of SD (System Dynamics) model is used to screen the key factors that affect the capacity of road network in road traffic condition. From the point of view of road network layout mechanism, traffic individual path selection process and result, this paper analyzes the matching degree of road network supply and traffic demand, and the influence of individual traffic path selection on road network capacity. Combined with the layout characteristics of narrow road dense network, the influence of this characteristic on network capacity is summarized. Based on the classical thought of space-time consumption and considering the influence of the layout characteristics of narrow road dense network, the calculation models of total space-time resources and individual space-time consumption of road network are discussed respectively, and the service level, traffic organization, cross-sectional form are considered. The matching degree of supply and demand modifies the model and gives the calculation flow of the model. Taking the low carbon demonstration area of Chenggong New District of Kunming as an example, this paper compares and analyzes the road network layout characteristics and network capacity before and after encrypting the road network, evaluates the effect of capacity change, and summarizes the application prospect of the model. In this paper, the network capacity model based on the idea of narrow road network layout is constructed, which fully considers the characteristics of the road network under the new layout concept and its influence on the capacity, which is more suitable for the calculation of the capacity under the new trend of urban road network planning.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491

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