| Summary: | 碩士 === 國立臺灣大學 === 機械工程學研究所 === 93 === ABSTRACT
The Numerical Analysis and Secure Evaluation
of Fire Accident
in the Mass Rapid Transit Stations
By Keng-Hao Chang
MASTER DEGREE OF
ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING
NATIONAL TAIWAN UNIVERSITY
September 2004
ADVISER: Dr. Sih-Li Chen
In order to solve increasing problems such as traffic jams and air pollution, most modern cities in Taiwan have built or planed to build the Rapid Transit Systems, which has trains departing from terminal stations every 3-5 minutes in underground tunnels. Citizens depend greatly on public transportations such as MRT (Mass Rapid Transit). During rush hours, the number of passengers would be up to the maximum capacity. In addition, most passengers await the trains on the waiting platforms; thus, if there were a fire accident, it would pose a dangerous threat to human life. Therefore, engineers must consider the environment in compliance to the fleeing standard.
In present study, the quantitative results of the fluids flow in fire environment were predicted by PHOENICS, which is a general-purpose software package produced by CHAM Ltd. In the numerical simulation, the smoke management system will be initiated. The results will be verified according to the rules of NFPA130, which is concluded by NFPA (National Fire Protection Association) to check the security of exits.
From the analysis of the results, it was found that one exit failed to meet NFPA130 standards. Temperature of this exit is greater than 60℃. However, the other exits do meet the satisfactory requirement of temperature, visibility, CO concentration and radiation exchange rate of NFPA130.
Key words: Mass Rapid Transit Stations, fire accident, PHEONICS
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