Simulation on the Influence of Type-S Current-limiting Railing on the Passenger Flow at the Entrance

The type-S current-limiting railing is usually set in front of the entrance of stations to relief the backlog of passengers and the congestion at the entrance. The influences of type-S current-limiting railing on the passenger flow at entrance were investigated through numerical simulation. Results showed that the type-S current-limiting railing increased the walking distance of passengers to the entrance. Therefore, it resulted in the decrease of the passenger flow rate and pedestrian density in front of the entrance, as well as the increase of the interval time between passengers went through the entrance. The passenger flow rate at the entrance increased with the total number of passengers. When the number of passengers that queueing up at the entrance was large, the congestion would be formed even the type-S current-limiting railing was set, while the passengers inside the railings were well-organized under the effects of current-limiting railing. The influence of railing number on the passenger flow rate at entrance was not significant, while the pedestrian density in the railings decreased with the railing number. When the railing width was large, the pedestrians might walk abreast and speed up to surpass the passengers ahead of them in the railings. The passenger flow rate at the entrance increased linearly, and the interval time between passengers decreased linearly with the railing width. Therefore, limiting the railing width could decrease the passenger flow rate at the entrance and relief the operation pressure of stations.