The Study of Outflow Rate of Stair and Turnstile in Subway Station - Comparison between Measurement and Simulation

Recently commercial egress softwares are frequently used for the risk assessment. The estimation of evacuation time is an important procedure and the outflow coefficient in a bottleneck becomes the crucial factor for design of emergency planning. This paper compares the outflow coefficient of measurement with those of softwares in the bottlenecks of subway stations where masses of people movement is observed. Stairway and turnstile are the 2 bottleneck points along escape pathway. For the escape simulation it is recommended that 2 different modes be used in the programs for 2 kinds of bottleneck. The results of the comparison makes a big difference among them and some of differences can be reduced by correct design of input data. In conclusion the results of simulation should be examined thoroughly by procedure of comparisons with other results.