Universität zu Köln

Liu, Rong, Fu, Zhijian, Schadschneider, Andreas, Wen, Qiuping, Chen, Junmin and Liu, Shaobo (2019). Modeling the effect of visibility on upstairs crowd evacuation by a stochastic FFCA model with finer discretization. Physica A, 531. AMSTERDAM: ELSEVIER. ISSN 1873-2119

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Abstract

In recent years, deep underground buildings appear more often than ever, and stairs are the main facilities for the upward evacuation of crowds from these buildings. As one of the most essential factors, the visibility might play a dominant role in the upward evacuation on stairs. To ensure the safety of the crowd in underground spaces, a finer discrete and stochastic floor field cellular automaton (FFCA) model integrating the visibility influence is established for the simulation of the crowd upward evacuation from a 21-storey staircase. By comparison, the simulation fits well with the observation and experiment, which implies that the model captures the main features of upward evacuations on stairs. Then, from the predicted results, it is found that the visibility reduction has a significant negative impact on the temporal-spatial distribution of pedestrians, especially on the inflow and outflow, while the entrance flow rate shows little impact as long as it is higher than 1.0 ped.m(-1).s(-1). (C) 2019 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Liu, Rong UNSPECIFIED UNSPECIFIED UNSPECIFIED Fu, Zhijian UNSPECIFIED UNSPECIFIED UNSPECIFIED Schadschneider, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED Wen, Qiuping UNSPECIFIED UNSPECIFIED UNSPECIFIED Chen, Junmin UNSPECIFIED UNSPECIFIED UNSPECIFIED Liu, Shaobo UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-133419
DOI:	10.1016/j.physa.2019.121723
Journal or Publication Title:	Physica A
Volume:	531
Date:	2019
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1873-2119
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FIELD CELLULAR-AUTOMATON; PEDESTRIAN EVACUATION; SPEED; SIMULATION; MOVEMENT; WALKING; EXIT; BEHAVIOR; CHOICE; AREA Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13341