同台换乘站站台宽度计算方法研究

Platform Width Calculation at One-platform-transfer Station of Urban Rail Transit

以同台换乘站台为对象,研究了同台换乘站台乘客的动态分布规律,提出了同台换乘站台最高聚集人数的计算方法;分析了乘降区、集散区宽度计算的控制点,在既有规范按方向计算乘降区宽度的基础上,通过两方向乘降区宽度合并计算改进了岛式站台宽度计算方法.以某同台换乘站为例,按本文方法计算的站台宽度值为11.8 m,大于现有设计规范的计算值9.9 m,小于美国B级服务水平下的计算值12.4 m.通过仿真,比较了该站台3种宽度下的客流密度,结果表明:按我国现行方法,站台乘降区客流密度最高达2.5人/m^2,集散区客流密度最高达0.8人/m^2;按本文方法,分别降至2.0人/m^2、0.6人/m^2;按美国规范,分别为1.8人/m^2、0.5人/m^2.

This paper mainly studies the width calculation of one-platform-transfer station. The passengers＇ dynamic distribution law is studied and a method of calculating the maximum assembling on one-platform- transfer station is given. The control point of calculating the width is analyzed. In the presented method, the two waiting areas are calculated on a consolidated basis, which is different from the current code. Further, in a case of an one-platform-transfer station, the result is 11.8 m which is bigger than 9.8 m in China＇ s current code for design of metro, smaller than 12.4 m in American＇ s B level. In the end, with the help of the software, the pedestrian density is tested under the three ways. In the current code, the pedestrian density in the waiting area reaches 2.5 person/m% and 1.8 person/m2 in American＇ s B level, while using the presented way, the result is 2.0 person/m2. In the distribution area, the pedestrian density in China＇ s current code reaches 0.8 person/m2, and 0.5 person/m2 in American＇ s B level, while using the presented way, the result is 0.6 person/m2.