The Study on Occupant Evacuation Time Simulations in the Underground Stations

• Main Author: 林世庸
• Other Authors: 陳俊勳
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/64683176111771348202

碩士 === 國立交通大學 === 機械工程學系 === 99 === This study analyzes occupant evacuation time in an underground station by utilizing performance-based design method. Firstly, it discusses the internal safety design conditions of the building, such as walking distance, stair width, and occupant density. Then it analyzes the occupant flux across the stairs, interference level of gate and corresponding evacuation situation. The analyses for the evacuation time simulation of disable occupant groups are also given. The framework of this study includes improving the escaping efficiency, the influences on evacuation based on the fire locations and population densities, the comparison by using different simulation methods and the occupant evacuation time simulation of disable groups. The following conclusions are obtained by this research: 1. Curved walls design can smooth the collision sitution of people around the stair corner to help reducing the evacuation time. The escape efficiency of about 11.17% increase, and the occupant flux across the stairs can be increased about 20%. 2. If fire incident occurs in the underground station, the most dangerous case is the fire caused by train because of an excessive population, so the time needed to escape which is 8.79min is the longest. 3. According to the comparison of using different simulation methods, it is found that evacuation time in Route B calculation is the most strictly. The specification principles applied by NFPA 130 and KMRT are the same and it leads to the most loosing result. The results by Simulex software are intermediate between the methods mentioned previously. 4. The evacuation time analysis of disable groups by using Simulex software finds that the evacuation time for such people is about 1.6 times that for normal people.