为有效识别城市轨道交通网络中线路及车站动态瓶颈,给实时有效的运营组织策略实施提供依据。以容量不受限制为前提,以乘车时间、换乘时间及换乘次数为乘客出行路径选择影响因素,进行了理想化的网络客流分配。在此基础上,构建了基于服务水平的车站动态瓶颈识别方法以及基于交通流客流密度模型并加以改进的线路动态瓶颈识别方法,最后以算例验证方法的可实施性。研究结果表明:该方法可实施性较强,能有效识别网络中车站及线路动态瓶颈,在实际运营中应以动态瓶颈为依据指导瓶颈疏解措施的有效实施,以提升城市轨道交通网络的承载能力。 In order to effectively identify the dynamic bottleneck of the lines and stations in urban rail transit network, it provides a basis for the implementation of real-time and effective operation and organization strategy. Taking the capacity unrestricted as a prerequisite, the ideal passenger network allocation was carried out based on the influencing factors such as ride time, transfer time and transfer times for passenger travel route selection. On this basis, a dynamic bottleneck identification method based on service level and a dynamic bottleneck identification method based on traffic flow density model are proposed. Finally, an example is given to verify the feasibility of the method. The results show that this method can be implemented effectively and can effectively identify the dynamic bottleneck of stations and lines in the network. In practical operation, the bottleneck of dynamic bottleneck should be used to guide the effective implementation of bottleneck mitigation measures in order to enhance the carrying capacity of urban rail transit network .