基于格子气模型的北京地铁站内人流移动分析

Analysis on pedestrian flow movement in a subway station of Beijing based on lattice gas model

为研究因超出原有设计人流量阈值引发的安全隐患问题,提出了一种基于动态参数的模块化格子气模型。对北京地铁惠新西街南口站约4 000 m^2的面积进行建模,对比了实地拍摄视频数据的情况与模拟仿真结果,确保了较好的精度。通过输入闸机口和列车进入站台的人流信息,给出短时间站内人流的移动及分布情况。发现了惠新西街南口站设计上的不足与缺陷,提出了对类似站台的设计及模型应用的建议。结果表明:十号线与五号线之间换乘通道通行能力较低,换乘通道口存在拥堵,具有安全隐患。拓宽换乘通道2 m能够使车站通行能力大大提高,基本满足目前该站在工作日下班高峰期的换乘需求。

To study the problem of potential safety hazard caused by exceeding the original designed threshold of pedestrian flow,a modular lattice gas model based on dynamic parameters was put forward. The modeling was carried out on an area about four thousand square meters in Huixinxijie Nankou station of Beijing subway,and the simulation results were compared with the data of on-site shot video to ensure the better accuracy. The movement and distribution situation of pedestrian flow in the station in a short period were obtained by inputting the information of pedestrian flow entering the platform through the fare gate and the train. The shortages and defects in the design of Huixinxijie Nankou station were found out,and the suggestions for the design of similar platform and the application of the model were put forward.