Determination of the carrying capacity of passenger passage is of some reference value to passenger passage design and passenger transport organization .In this paper ,statistics of walking speeds and average oc-cupying space per capita were collected from the video information of passenger flow through passenger passa-ges of the Beijing Railway Station and Beijing West Railway Station .Analysis was made on those data and with reference to overseas researches . The model interrelationship of passenger throughput , passenger walking speed and passenger flow density was structured .Then the model was fitted using Software Origin .The fitting curve was found to be of very good response to the inter relationship of the above-mentioned three parameters . Lastly the standard of level of service and the reference to designed carrying capability of the passenger passage were determined by the ratio between the passenger throughput and the maximum carrying capacity .%客运通道通过能力的确定对客运通道的设计及旅客运输组织具有一定的参考价值。根据在北京站和北京西站采集的客运通道内客流情况的视频资料，进行统计得到旅客走行速度和人均占据空间的数据，同时借鉴国外的相关研究，进行分析构建客运通道内旅客流量、速度和密度之间相互关系模型，并通过Origin软件对其进行拟合，拟合的曲线可以很好地反映三者之间的关系。通过旅客流量和通道最大通过能力的比值确定客运通道的服务水平标准及设计能力参考值。研究表明，单位宽度通道的最大通过能力为58人/m · min ，建议单位宽度通道设计通过能力取值42人/m · min。
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