On efficiency of evacuation from multi-floor metro station based on microscopic simulation

doi:10.16265/j.cnki.issn1003-3033.2017.09.009

Abstract

Abstract: In order to objectively assess the efficiency of evacuation from complex multi-floor buildings, simulations were carried out for different scenarios of evacuation from a three-floor subway station by using the CityFlow microscopic pedestrian evacuation simulation model. Effect of occupant distribution, escalator operation status and way-finding behaviors on the evacuation results were analyzed quantitatively. A concept of "floor evacuation efficiency" was proposed to get rid of the uncertainties induced by evacuation scenario setup for evacuation from multi-floor buildings, based on which an objective evacuation efficiency evaluation method was discussed. The results show that adding an escalator E3 to the station reduces the evacuation time by 9.8%, that allowing most of the people to choose the stair S2 reduces the evacuation time by 16.9%, that the farther an area from the exits is, the stronger the effect adjustments in evacuation scenarios on it will be, that the improvement of evacuation efficiency largely depends on the balance and coordination between all the evacuation paths, and that the floor evacuation efficiency reflects the floor's independent features and is an objective and effective indicator.

Key words: emergency evacuation, metro station, evacuation efficiency, multi-floor evacuation, simulation

CLC Number:

X928.9
U298

WANG Xudong, ZHONG Ming, LIU Shaobo. On efficiency of evacuation from multi-floor metro station based on microscopic simulation[J]. China Safety Science Journal, 2017, 27(9): 51-56.

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