基于FCD数据的城市有效路网密度评价——以广州荔湾区和越秀区为例  

Evaluating the valid density of road network in urban based on FCD: Case of Liwan and Yuexiu district in Guangzhou city

作　　者：马林兵[1] 魏慧丽 曹小曙[1] 

机构地区：[1]中山大学地理科学与规划学院,广州510275 [2]广州市房地产研究中心,广州510275

出　　处：《地理研究》2015年第3期541-554,共14页Geographical Research

基　　金：国家自然科学基金项目(41171139)

摘　　要：提出一种基于FCD数据的城市有效路网密度的评价方法,主要是从城市路网的静态布局结构和动态交通流量两个方面对城市路网数据以及FCD数据进行核密度估计分析,得到城市有效路网密度等级的分布特征,继而通过理论与实际道路网密度等级差异对比分析,发现路网中差异区域,为城市路网规划提供可靠的依据。以广州市中心城区越秀、荔湾内的主要路网数据以及2010年五一期间中心城区内出租车的FCD数据为例,利用上述评价方法进行分析得出以下结论:区域内人民中路、人民南路、白云路、中山六路和中山七路路段的理论与实际密度等级差异性明显,表现为路段上密度核的数量与核影响范围差异大,其中尤为突出的是人民中路和人民南路,从理论有效路网密度的分析角度,两个路段都是高密度区域,与实际交通流量存在较大的密度分异。The paper puts forward an evaluating method of valid density of in urban based on FCD. It Mainly applies the kernel density estimation(KDE) for network data and floating car data(FCD) to analyze the characteristics of effective network density level distribution from two aspects: the static layout of the structure and dynamics traffic of urban road network. And then analyz the differences of density distribution between the theoretical and the actual, find the differences in regional road network, and provide a reliable basis for the urban road network planning. This paper takes use of KDE to analyze the FCD gathered from the downtown of Guangzhou During the May Day in 2010 and the main road networks in Yuexiu,Liwan district, and at last gets the following conclusions: differences are clear in these road,such as Renmin Road, Renmin South Road, Baiyun Road, Zhongshan Road and Zhongshan Road section of seven, especially the differences of the number of density nuclear and nuclear scope in the prominent South Renmin Road and the people. From the perspective of theoretical analysis, the effective road network density of the two sections are all high, but the actual traffic flows reflect that they are low density area. This phenomenon shows that there is traffic waste of resources. Overall, according to the results of comparative analysis of road network and FCD, we can easily find and clarify the problems occurred in the urban road network. Then it can provide us some reliable basis to the future design of urban road network and rational planning of transport.

关 键 词：路网 浮动车数据 有效路网密度 核密度估计 

分 类 号：U491[交通运输工程—交通运输规划与管理]