小区开放对改善城市道路通行能力评估分析

The Analysis and Evaluation of Improving Urban Road Capacity through Community Opening

摘要: 城市封闭式小区是造成道路交通拥堵的主要原因之一。小区开放对优化路网结构、提高道路通行能力、改善城市交通状况的数据评估具有迫切的现实需求。本文首先借助主成分分析及熵值法对三类城市的道路通行能力进行评估；其次对不同规模的城市道路通行能力的差异性及原因进行了分析，为相关城市设计小区开放后优化道路通行能力方案提供参考；最后基于小区开放前后影响交通环境的变化数据，通过引入新的评价因子对BPR函数进行优化，实现小区开放对城市交通状况改善的数据分析。

Abstract: The urban enclosed residential district is one of the major causes of road traffic congestion. The opening of the district has urgent realistic demand for optimizing the network structure, improving the road capacity and improving the urban traffic condition. Firstly, in this paper the principle of principal component analysis and entropy method are used to evaluate the road capacity of three cities. Secondly, the differences and reasons of urban road capacity in different scale are analyzed. This work provides a reference for the design of relevant urban design after the opening of the district to optimize the capacity of the road. Finally, based on the change data of the traffic environment before and after the opening of the residential area, this paper optimizes the BPR function by introducing new evaluation factors and completes the data analysis of the opening of the district and the improvement of the urban traffic condition.