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运用交通网络保留容量的概念 ,引入交通网络容量可靠性 ,分析比较了基于路段容量的网络可靠性和基于结点容量的网络可靠性 .结果表明 :基于路段的网络容量可靠性通常小于基于结点的网络容量可靠性 ,在城市街路网络容量可靠性分析中 ,应当充分考虑街路交叉口的容量 .网络保留容量拥有统一的OD结构 ,即单一的比例因子 ,如果每一个OD拥有各自的比例因子 ,交通网络容量将会更加确切地描述交通量的空间分布 ,在城市土地利用中将会有极其重要的意义 .
By using the concept of reserve capacity of traffic network, the reliability of traffic network capacity is introduced, and the network reliability based on link capacity and the network reliability based on node capacity are analyzed and compared.The results show that the reliability of network-based network is generally less than that based on nodes Network capacity reliability, the city street network capacity reliability analysis should take full account of the street intersection capacity network reserve capacity has a uniform OD structure, that is, a single scale factor, if each OD has its own scale factor, Traffic network capacity will more accurately describe the spatial distribution of traffic volume, which will be of extremely important significance in the urban land use.