广州地铁车站进站客流超高峰系数实证分析

Empirical Analysis of Ultra-peak Coefficient of Inbound Passenger Flow in Guangzhou Metro Station

[目的]超高峰客流量是设计城市轨道交通车站内各部位通过能力所需的重要参数,由高峰小时客流量乘以超高峰系数得到。而超高峰系数目前还没有合理的确定方法,在实际设计中通常基于《地铁设计规范》给出的建议值并结合设计者的经验进行取值,需研究其分布规律和取值方法。[方法]基于广州地铁现状客流数据,按照全日进站量和所在区位对车站进行分类,基于此,分析了不同类型车站进站客流超高峰系数分布范围的差异,探讨了进站客流超高峰系数的分布规律和确定思路。[结果及结论]周边以岗位用地为主的车站,其晚高峰进站客流超高峰系数宜在《地铁设计规范》中建议值的低限附近取值;周边以居住用地为主的车站,其早高峰进站客流超高峰系数,可根据车站早高峰进站客流的出行距离分布集中程度来取值,如果出行距离分布集中程度高,则宜在《地铁设计规范》中建议值的高限附近取值。

[Objective]Ultra-peak passenger flow is an important parameter for designing the capacity of various parts in urban rail transit station,which is obtained by multiplying the peak-hour passenger flow by the ultra-peak coefficient.However,there is no appropriate method to determine the ultra-peak coefficient at present.In practical design,its value is usually calculated based on the recommended one given by“Code for design of Metro”and the designer′s experience.Therefore,it is necessary to study the distribution rule and value calculation method of the coefficient.[Method]Based on the current passenger flow data in Guangzhou Metro stations,the stations are classified by the daily inbound passenger flow and the location.The differences in distribution range of the above ultra-peak coefficient at different stations are analyzed,and the distribution pattern and determination approach are discussed.[Result&Conclusion]For the stations surrounded by employment land,the ultra-peak coefficient of inbound passenger flow during evening peak hours should be taken around the lower limit of recommended value given by“Code for design of metro”.For the stations surrounded by residential land,the ultra-peak coefficient during morning peak hours should be taken according to the concentration of travel distance distribution of inbound passenger flow.If the distribution of travel distance is highly concentrated,the coefficient value should be taken around the upper limit of the recommended value in the“Code for design of metro”.