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Management of Large Crowds in Underground Metro Stations

Blixt, Daniel LU (2016) In LUTVDG/TVBB VBRM01 20161
Division of Fire Safety Engineering
Abstract
This report focuses on the issues associated with large occupant loads and counter-flows in underground metro stations. A basic case study is performed by simulating different countermeasures scenarios to investigate the implication that the countermeasures may have on the occupant load on the platform. The countermeasures investigated were modifications to the flow through ticket gates or escalators, either be blocking components or reducing their capacity. Since countermeasures may increase the queuing time, the pedestrian flows for the scenarios are also presented as a function of the average queuing time. The second part of the report investigates the implication that counter-flows may have on the egress flow in case of an upwards... (More)
This report focuses on the issues associated with large occupant loads and counter-flows in underground metro stations. A basic case study is performed by simulating different countermeasures scenarios to investigate the implication that the countermeasures may have on the occupant load on the platform. The countermeasures investigated were modifications to the flow through ticket gates or escalators, either be blocking components or reducing their capacity. Since countermeasures may increase the queuing time, the pedestrian flows for the scenarios are also presented as a function of the average queuing time. The second part of the report investigates the implication that counter-flows may have on the egress flow in case of an upwards evacuation on escalators in relation to a downwards moving counter-flow. The results from the countermeasure simulations show that to reduce the occupant load on the platform without increasing the queuing time, the flow through components (i.e. ticket gates and/or escalators) shall be reduced, but the components shall never be blocked. The evacuation simulation results from the counter-flow scenarios show that the upwards egress flow is not affected by a relatively small counter-flow (10 – 20 persons/min), but if the counter-flow is increased to 40 persons/min the egress flow is notably reduced or even totally blocked. (Less)
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author
Blixt, Daniel LU
supervisor
organization
course
VBRM01 20161
year
type
M2 - Bachelor Degree
subject
keywords
STEPS, crowd behavior, egress strategy, metro station, stopped escalator, countermeasure, counter-flow.
publication/series
LUTVDG/TVBB
report number
5523
other publication id
LUTVDG/TVBB--5523--SE
language
English
id
8883402
date added to LUP
2016-06-21 13:48:18
date last changed
2017-04-21 15:44:30
@misc{8883402,
  abstract     = {This report focuses on the issues associated with large occupant loads and counter-flows in underground metro stations. A basic case study is performed by simulating different countermeasures scenarios to investigate the implication that the countermeasures may have on the occupant load on the platform. The countermeasures investigated were modifications to the flow through ticket gates or escalators, either be blocking components or reducing their capacity. Since countermeasures may increase the queuing time, the pedestrian flows for the scenarios are also presented as a function of the average queuing time. The second part of the report investigates the implication that counter-flows may have on the egress flow in case of an upwards evacuation on escalators in relation to a downwards moving counter-flow. The results from the countermeasure simulations show that to reduce the occupant load on the platform without increasing the queuing time, the flow through components (i.e. ticket gates and/or escalators) shall be reduced, but the components shall never be blocked. The evacuation simulation results from the counter-flow scenarios show that the upwards egress flow is not affected by a relatively small counter-flow (10 – 20 persons/min), but if the counter-flow is increased to 40 persons/min the egress flow is notably reduced or even totally blocked.},
  author       = {Blixt, Daniel},
  keyword      = {STEPS,crowd behavior,egress strategy,metro station,stopped escalator,countermeasure,counter-flow.},
  language     = {eng},
  note         = {Student Paper},
  series       = {LUTVDG/TVBB},
  title        = {Management of Large Crowds in Underground Metro Stations},
  year         = {2016},
}