A proposed model and application for pedestrian evacuation time calculation in road tunnels

doi:10.16265/j.cnki.issn1003-3033.2020.04.019

Abstract

Abstract: In order to accurately calculate pedestrians' evacuation time and provide a theoretical basis for reasonable design of evacuation routes in tunnels, an innovative empirical model was proposed to calculate evacuation time in road tunnels, which considered influence of parameters like distance, movement speed, tunnel width, occupant flow and traffic volume. In this model, critical conditions of exit clogging, its start time and duration were all taken into consideration. Then, with a real underwater tunnel as an example, influence of occupant density and their movement speed on evacuation time and exit clogging was analyzed after different horizontal or vertical escape routes were set, and rules of equivalent setting space of horizontal and vertical routes were proposed. The results show that pedestrians' evacuation time is affected by their walking speed to different degrees in the event of different (horizontal/vertical) routes,but it is closely related with occupant density. And evacuation capacity of horizontal routes is significantly greater than that of vertical ones under the same condition.

Key words: road tunnel, evacuation time, calculation model, horizontal exit, vertical exit

CLC Number:

X951

CHENG Yanying, XIE Wei, ZHANG Yuchun, PENG Qi, LIU Jiewei, CHEN Ke. A proposed model and application for pedestrian evacuation time calculation in road tunnels[J]. China Safety Science Journal, 2020, 30(4): 121-126.

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