Occupant evacuation and casualty estimation in a building under earthquake using cellular automata

2015 ◽  
Vol 424 ◽  
pp. 152-167 ◽  
Author(s):  
Shuang Li ◽  
Changhai Zhai ◽  
Lili Xie
Keyword(s):  
Cellular Automata ◽  
Casualty Estimation ◽  
Occupant Evacuation

A Cellular Automata occupant evacuation model considering gathering behavior

2015 ◽  
Vol 26 (08) ◽  
pp. 1550089 ◽  
Author(s):  
Daoliang Zhao ◽  
Jinhui Wang ◽  
Xiaoliang Zhang ◽  
Xiaoqun Wang
Keyword(s):  
Visual Field ◽  
Cellular Automata ◽  
Random Distribution ◽  
Initial Density ◽  
Repulsive Force ◽  
Random Model ◽  
Current Cell ◽  
The Individual ◽  
Object Area ◽  
Occupant Evacuation

A two-dimensional (2D) Cellular Automata (CA) random model is developed to simulate occupant evacuation considering gathering behavior. The movement process from random distribution to gathering state can be simulated based on the map of the position repulsive force. Evacuations with random distribution and gathering distribution are compared. Visual field means object area coverage considered by the individual in the current cell, representing by the radius of visual field, VR. The simulation results with VR = 1 and 2 have little difference while the simulation with VR = 3 can reasonably represent gathering process. When the occupant density is less than 0.64 people/m2, the time of gathering process increases very fast with the increase of density; when the density is larger than 1.28 people/m2, the time of gathering decreases with the increase of density. When the initial density is less than 1.44 people/m2, the evacuation times with random distribution are always less than those with gathering distribution. When the initial density is larger than 1.44 people/m2, the evacuation times with gathering or random distribution are almost the same. Our model can simulate the gathering and evacuation process with more than two rally points. The number and distribution of rally points can deeply affect the evacuation time.

Occupant Evacuation Based on Cellular Automata Involving Repulsion

2014 ◽  
Vol 556-562 ◽  
pp. 4061-4064
Author(s):  
Xue Ling Jiang ◽  
Chao Yun Long ◽  
Shui Jie Qin ◽  
Li Ping Wang ◽  
Jiang Hui Dong
Keyword(s):  
Cellular Automata ◽  
High Efficiency ◽  
Dynamic Parameter ◽  
Original Model ◽  
Model Based ◽  
Pedestrian Evacuation ◽  
Improved Model ◽  
Account Interaction ◽  
Occupant Evacuation ◽  
Original Dynamic

The dynamic parameter model based on cellular automata was not taken into account interaction between pedestrian and environment,it resulted in quite different from that of in real life.So a new model was proposed by taking into account one of the interactions:repulsion.In the present work, evacuation involving repulsion problem was studied in the room with single exit.The expanded model based on dynamic parameter model is introduced by using the quantitative of repulsion.The model could be used to explore the different degree of panic through repulsion.The corresponding simulations of pedestrian evacuation with repulsion were carried out. It extends the constraint where the original model was applied. The improved model is more accordance with actual circumstance than the original dynamic parameters model.The improved model is not only expected to model evacuations in detail but also has high efficiency.

A TCAD tool for the simulation of the CVD process based on cellular automata

2001 ◽  
Vol 11 (PR3) ◽  
pp. Pr3-205-Pr3-212
Author(s):  
G. Ch. Sirakoulis ◽  
I. Karafyllidis ◽  
A. Thanailakis
Keyword(s):  
Cellular Automata
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