A study on Arson Fire Scenario Simulation for Train Passing through Railway Tunnel- Case Study of Kaohsiung Underground Railway Section
| Autor: | Hung-Chieh Chung, 鍾宏杰 |
|---|---|
| Rok vydání: | 1040 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 In order to quantify the hazard of arson attacks on the Electric Multiple Unit (EMU) train which passing through railway tunnel. In the first, this study investigates the possible fire scale and life safety criteria in railway system.Then, the fire simulation software - Fire Dynamics Simulator (FDS), which is a Computational Fluid Dynamics (CFD), is used to simulate the fire scenarios under arson attacks.Furthermore, more arson simulation cases will be conducted in order to discuss the different gangways design and ventilation conditions in train for suitable fire safety engineering and early-stage response strategies. According to these analyses above, in a ‘medium’ T-squared fire,the train compartment which is caught fire will unfavorable to evacuate for passengers when fire grow to 200s and unfavorable to survive for passengers when fire grow to 300s. In a ‘ultra-fast’ T-squared fire, if gangways is open,three train compartments will unfavorable to the evacuation of passengers when fire grow to 300s, the train compartment which is caught fire will unfavorable to survive for passengers when fire grow to 300s. Moreover, the analysis of different gangways design and ventilation conditions find that setting the gangways in the train can contribute to narrowing the spread of fire and deferring the growth of fire obviously. Besides, no matter the train have gangways or not, it is unfavorable that the window was broken when a train caught fire during traveling. The ventilation condition will change when windows was broken, it also result in external airflow entering the train and that will fuel the fire as well as lead to the evacuation time or surviving time is shortened. If the train without setting gangways, the opening windows will cause the extending of fire hazard range more than five train compartments. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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