Advanced

Modelling total evacuation strategies for high-rise buildings

Ronchi, Enrico LU and Nilsson, Daniel LU (2014) In Building Simulation 7(1). p.73-87
Abstract
This paper focuses on the use of egress models to assess the optimal strategy in the case of total evacuation in high-rise buildings. The model case study consists of two identical twin towers linked with two sky-bridges at different heights. Each tower is a 50-floor office building. The use of either horizontal or vertical egress components or a combination of them is simulated. The egress components under consideration are stairs (either 2 or 3 stairs), occupant evacuation elevators, service elevators (available or not for the evacuation of the occupants), transfer floors and sky-bridges. Seven different evacuation strategies have been tested which consider the total evacuation of a single tower. The evacuation scenarios have been... (More)
This paper focuses on the use of egress models to assess the optimal strategy in the case of total evacuation in high-rise buildings. The model case study consists of two identical twin towers linked with two sky-bridges at different heights. Each tower is a 50-floor office building. The use of either horizontal or vertical egress components or a combination of them is simulated. The egress components under consideration are stairs (either 2 or 3 stairs), occupant evacuation elevators, service elevators (available or not for the evacuation of the occupants), transfer floors and sky-bridges. Seven different evacuation strategies have been tested which consider the total evacuation of a single tower. The evacuation scenarios have been simulated with a continuous spatial representation evacuation model (Pathfinder). In order to perform a cross validation of the model results, two strategies involving the evacuation using stairs or occupant evacuation elevators have also been simulated using a fine network model (STEPS). Results refer to the analysis of total evacuation times. The simulation work highlights the assumptions required to represent the possible behaviours of the occupants in order to qualitatively rank the strategies. The lowest evacuation times are obtained simulating strategies involving the sole use of occupant evacuation elevators and the combined use of transfer floors and sky-bridges. This study suggests that the effectiveness of evacuation strategies involving the combination of stairs and elevators significantly decreases in high-rise buildings if they are not combined with appropriate messaging/signage to guide occupants in their behaviours. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Emergency evacuation, Evacuation modelling, Evacuation simulation, evacuation strategies, high-rise building, sky-bridge
in
Building Simulation
volume
7
issue
1
pages
73 - 87
publisher
Springer
external identifiers
  • wos:000326631200007
  • scopus:84887393309
ISSN
1996-8744
DOI
10.1007/s12273-013-0132-9
language
English
LU publication?
yes
id
aebbd256-9698-4f5b-939a-adc2e94db2f9 (old id 4001456)
date added to LUP
2013-08-27 11:18:41
date last changed
2017-10-22 03:30:35
@article{aebbd256-9698-4f5b-939a-adc2e94db2f9,
  abstract     = {This paper focuses on the use of egress models to assess the optimal strategy in the case of total evacuation in high-rise buildings. The model case study consists of two identical twin towers linked with two sky-bridges at different heights. Each tower is a 50-floor office building. The use of either horizontal or vertical egress components or a combination of them is simulated. The egress components under consideration are stairs (either 2 or 3 stairs), occupant evacuation elevators, service elevators (available or not for the evacuation of the occupants), transfer floors and sky-bridges. Seven different evacuation strategies have been tested which consider the total evacuation of a single tower. The evacuation scenarios have been simulated with a continuous spatial representation evacuation model (Pathfinder). In order to perform a cross validation of the model results, two strategies involving the evacuation using stairs or occupant evacuation elevators have also been simulated using a fine network model (STEPS). Results refer to the analysis of total evacuation times. The simulation work highlights the assumptions required to represent the possible behaviours of the occupants in order to qualitatively rank the strategies. The lowest evacuation times are obtained simulating strategies involving the sole use of occupant evacuation elevators and the combined use of transfer floors and sky-bridges. This study suggests that the effectiveness of evacuation strategies involving the combination of stairs and elevators significantly decreases in high-rise buildings if they are not combined with appropriate messaging/signage to guide occupants in their behaviours.},
  author       = {Ronchi, Enrico and Nilsson, Daniel},
  issn         = {1996-8744},
  keyword      = {Emergency evacuation,Evacuation modelling,Evacuation simulation,evacuation strategies,high-rise building,sky-bridge},
  language     = {eng},
  number       = {1},
  pages        = {73--87},
  publisher    = {Springer},
  series       = {Building Simulation},
  title        = {Modelling total evacuation strategies for high-rise buildings},
  url          = {http://dx.doi.org/10.1007/s12273-013-0132-9},
  volume       = {7},
  year         = {2014},
}