Abstract
In assembly occupancies with serried seats distribution, such as cinemas and theaters, the evacuation bottleneck is not only limited to the exit but also in the narrow corridors formed by a large number of seats. These narrow corridors are also an important factor that why people cannot evacuate quickly. This paper observes the evacuation situation of a college theater at the end of movies, and uses BuildingEXODUS to study the influence of seat jumping and corridors’ width altering on evacuation. Studies shows that when the number reaches 20%-60% of the capacity, seat jumping situation during evacuation can improve evacuation efficiency. While the number exceeds 60% or less than 20% of the capacity, the total evacuation time will not change significantly. If the total width of the hallway remains unchanged and the width of each hallway is changed, the exit may reach the state of congestion in advance, which aggravates the congestion at the exit and also has a certain impact on the seat jumping to escape.
Highlights
In assembly occupancies with serried seats distribution, such as cinemas and theaters, the evacuation bottleneck is limited to the exit and in the narrow corridors formed by a large number of seats
In buildingEXODUS, it is necessary to change the property of the seat lattice point required to be set in the modeling module, and change the property of the seat lattice point from the free space to the seat, as shown in Figure 4.The direction of the seat is shown in Figure 3, and the front of each seat is represented by a black rectangle
The width of the situation: When the number of people is greater than 60% of the capacity, whether to change the width of the corridor has no significant change in the evacuation efficiency
Summary
This article conducted on-site observation of the evacuation of people in a movie theater in a university, and found that people prefer to evacuate through corridors 2 and 3, and corridors 1 and 4 are almost unused; people are accustomed to evacuating through gate 2 when entering the venue. Even if door 1 is in a state of concealment, few people will try to evacuate through door 1. In a non-emergency state, when people find that there is a long queue in the aisle, they tend to wait at the original seat instead of joining the line The team, Figure 1 shows the actual evacuation after the theater is gone
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