城市群多方式运输通道与网络可靠性

Multimodal Transport Channels and Network Reliability of Urban Agglomeration

为提高城市群交通运输能力,以多方式运输网络为视角,研究了城市群网络行程时间可靠性的计算方法。结合城市群的交通特点,构建了行程时间可靠性参数评价指标;以"点—轴"理论构建城市群交通运输网络,定义了运输通道交通方式的可靠性;为区别城市群不同交通运输方式优劣,基于最小路算法构建了一个多方式的城市群运输网络可靠性计算模型。在此基础上引入不交和算法概念推导该模型的计算方法和计算步骤。所得到的可靠度计算模型能够运用于量化一定时间内,城市群内部和城市群之间的多方式交通网络可靠性,为决策者提供了中观层面的决策支持。

To improve the transportation capacity of urban agglomeration,this paper studies on the calculation method of the reliability of network travel time in urban agglomeration by means of multi-mode transportation network.The evaluation index of the reliability parameters of urban agglomeration is constructed,based on the theoretical definition of urban agglomeration transportation.Then,the reliability of transportation mode is defined and the reliability calculation model of urban agglomeration is obtained.On this basis,the concept of path set and non-intersection and algorithm is introduced,and the calculation method and calculation procedure of network reliability of urban agglomeration are derived.In this paper,the resulting reliability calculation model can be applied to quantify urban agglomeration within a certain time of inner city and urban agglomeration networks reliability,provides decision makers with medium level of decision support.