小区开放对周边道路通行能力影响的研究

Study on the Influence of CommunityOpening on Surrounding Traffic

摘要: 本文构建了五个评价指标，用于评价小区开放对周边道路通行能力的影响，并通过可达性指标对比了不同类型小区开放前后的通行情况。首先利用Floyd最短路方法以及相应公式对道路通行的五个衡量指标值进行计算。其次，使用PCA算法对不同小区开放前后道路通行情况进行评价，并对各指标在小区开放前后的变化进行分析，检验了PCA排序结果的合理性。最后以小区内部弯路与直路的密度为划分依据，从昆明市呈贡新区核心区社区道路交通网设计图中选出三种类型小区，利用最短路矩阵可对比小区开放前后的外部道路通行情况，并使用已建立的道路网可达性指标对三种类型小区开放的影响进行了评价。

Abstract: This paper constructs five evaluation indexes, which are used to evaluate the influence of commu-nity opening on the traffic capacity of the surrounding roads, and compare the reachability of dif-ferent types of communities before and after opening. First, the Floyd shortest path method and the corresponding formula are used to calculate the five measures of road traffic. Secondly, the PCA algorithm is used to evaluate the road traffic before and after the opening of different communities. The changes of the indicators before and after the opening of the community are analyzed, and the rationality of the PCA sorting results is tested. Finally, based on the density of the detours and straight roads in the district, three types of communities are selected from the urban road traffic network design in the core area of Chenggong New District, Kunming. The shortest path matrix can be used to compare the external road traffic before and after the opening of the district, and the impact of the established reachability of the road network on the three types of community was evaluated.