This title appears in the Scientific Report : 2014 

Quantification of Bottleneck Effects for Different Types of Facilities
Zhang, Jun (Corresponding Author)
Seyfried, Armin
Jülich Supercomputing Center; JSC
2 S. 51-59
Transportation Research Procedia
2014
51-59
10.1016/j.trpro.2014.09.008
The Conference on Pedestrian and Evacuation Dynamics 2014, Delft (The Netherlands), 2014-10-22 - 2014-10-25
Contribution to a book
Contribution to a conference proceedings
Computational Science and Mathematical Methods
OpenAccess
Please use the identifier: http://dx.doi.org/10.1016/j.trpro.2014.09.008 in citations.
Please use the identifier: http://hdl.handle.net/2128/7997 in citations.
Restrictions of pedestrian flow could be triggered by directional changes, merging of streams and other changes or disturbances causing effects similar to bottlenecks given by geometrical narrowings. In this contribution we analyze empirically how the types of the changes or disturbances influence the capacity of a facility. For this purpose four types of facilities including a short narrowing, a long narrowing, a corner and a T-junction are investigated. It is found that the reduction of pedestrian flow depends on the shape and the length of the narrowing. The maximum observed flow of the corner (about 1.45 (m s)-1) is the lowest in all facilities studied, whereas that of the short narrowing is highest. The finding indicates that the usage of an unique fundamental diagram for the description of pedestrian flow at different kind of geometrical narrowings is limited.