Development and Verification of the Simplified Analysis Method to calculate the Emergency Evacuation Time for Civil Aircraft

2018 ◽  
Author(s):  
Dong Lingfei ◽  
Ke Peng
Keyword(s):  
Emergency Evacuation ◽  
Analysis Method ◽  
Evacuation Time ◽  
Civil Aircraft ◽  
Simplified Analysis

scholarly journals A Multistory Building Evacuation Model Based on Multiple-Factor Analysis

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Yang Zhou ◽  
Tanghong Wu ◽  
Gaofan Zhang ◽  
Zichuan Fan
Keyword(s):  
Functional Relationship ◽  
Emergency Evacuation ◽  
Multiple Factor Analysis ◽  
Time Step ◽  
Evacuation Time ◽  
Building Evacuation ◽  
Access Path ◽  
Multistory Building ◽  
Evacuation Model ◽  
Evacuation Routes

Emergency evacuation is an important issue in public security. To make a considerate plan, various situations are presented including blocking the accident area and letting the emergency access path available. In order to offer dynamic evacuation routes due to different circumstances, a multistory building evacuation model is proposed. Firstly, to analyse the patency of the building, an evacuation formula is applied after binary processing. The function of evacuation time and some other parameters is given by means of regression analysis. Secondly, the cellular automata (CA) algorithm was applied to illustrate the effect of the bottleneck. The response of evacuation time could be approximately optimized through calculating time step of the CA simulation. Finally, the value of maximum evacuation population density could be determined according to the analysis of CA simulation results, which was related to the switch state of the emergency channel. The emergency evacuation model was simulated by using the Louvre museum as an example. The results of the simulation presented some feasible evacuation routes in all kinds of situations. Furthermore, the functional relationship would also be given among evacuation time with the diversity of tourists, pedestrian density, and width of exits. It can give a different perspective that the multistory building evacuation model shows excellent adaptability to different circumstances.

scholarly journals Estimating horizontal movement performance of patient beds and the impact on emergency evacuation time

2021 ◽  
Vol 134 ◽  
pp. 105038
Author(s):  
Jaeyoung Kwak ◽  
Michael H. Lees ◽  
Wentong Cai ◽  
Ahmad Reza Pourghaderi ◽  
Marcus E.H. Ong
Keyword(s):  
Emergency Evacuation ◽  
Horizontal Movement ◽  
Evacuation Time ◽  
Movement Performance ◽  
The Impact

scholarly journals Analysis of Flood Evacuation Process in Vulnerable Community with Mutual Aid Mechanism: An Agent-Based Simulation Framework

2020 ◽  
Vol 17 (2) ◽  
pp. 560 ◽  
Author(s):  
Zhiqiang Wang ◽  
Jing Huang ◽  
Huimin Wang ◽  
Jinle Kang ◽  
Weiwei Cao
Keyword(s):  
Urban Communities ◽  
Flood Risk ◽  
Emergency Evacuation ◽  
Risk Tolerance ◽  
Low Density ◽  
Mutual Aid ◽  
Modeling Framework ◽  
Evacuation Time ◽  
Agent Based ◽  
Evacuation Management

Timely and secure evacuation of residents during flood disasters or other emergency events is an important issue in urban community flood risk management, especially in vulnerable communities. An agent-based modeling framework was proposed in order to indicate how the community properties (e.g., community density and percentage of vulnerable residents), residents’ psychological attributes (e.g., flood risk tolerance threshold) and mutual aid mechanism affect the flood evacuation process. Results indicated that: (1) The community density negatively affected the flood evacuation efficiency. The greater the density of the community, the longer the evacuation time. (2) There was a negative correlation between the flood risk tolerance threshold of residents and evacuation efficiency. (3) The proportion of vulnerable resident agents had opposite effects on the evacuation efficiency of different types of communities, which was to negatively affect low-density communities and positively affect high-density communities. (4) Mutual aid mechanism can reduce evacuation time in low-density communities, and the effect was more pronounced with a higher proportion of vulnerable resident agents in the community. These findings can help managers to develop better emergency evacuation management for urban communities.

Experimental Study on Seismic Responses of Piping Systems With Friction—Part 2: Simplified Analysis Method on the Effect of Friction

1995 ◽  
Vol 117 (3) ◽  
pp. 250-255
Author(s):  
H. Kobayashi ◽  
R. Yokoi ◽  
T. Chiba ◽  
K. Suzuki ◽  
N. Shimizu ◽  
...  
Keyword(s):  
Large Scale ◽  
Response Spectrum ◽  
Damping Ratio ◽  
Analysis Method ◽  
Equivalent Viscous Damping ◽  
Piping Systems ◽  
Simplified Analysis ◽  
Reduction Effect ◽  
Vibration Tests ◽  
Equivalent Viscous Damping Ratio

Friction between pipe and support structure is generally known to reduce seismic response of the piping systems. Vibration tests using large-scale piping model with friction support were carried out to evaluate the reduction effect. The piping response was mainly governed by the first modal deformation. The simplified analysis method based on linear response spectrum analysis was developed and confirmed to be applicable. In this method, the reduction effect by friction is treated as equivalent viscous damping ratio. This paper deals with the analysis method, and the comparison between the experimental results and analytical ones.

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