Study on Elevated Interval Evacuation of Metro Train considering the Influence of Fire, Railings, and Track Bed
Elevated metro is a typical type of urban rail transit that operates on viaducts. Due to its fast construction speed and low cost, it plays an important role in transportation systems with dense concentrations of people. Once a fire accident occurs in rush hour, it will cause high casualty and enorm...
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| Format: | Article |
| Language: | English |
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Wiley
2024-01-01
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| Series: | Modelling and Simulation in Engineering |
| Online Access: | http://dx.doi.org/10.1155/2024/6058039 |
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| author | Jianyao Tu Bozhezi Peng Liwei Bai Chaoyang Li Yi Zhang |
| author_facet | Jianyao Tu Bozhezi Peng Liwei Bai Chaoyang Li Yi Zhang |
| author_sort | Jianyao Tu |
| collection | DOAJ |
| description | Elevated metro is a typical type of urban rail transit that operates on viaducts. Due to its fast construction speed and low cost, it plays an important role in transportation systems with dense concentrations of people. Once a fire accident occurs in rush hour, it will cause high casualty and enormous injuries. In this regard, studying the characteristics of fire smoke spread and passengers’ evacuation is of profound significance. In this paper, Pyrosim and Pathfinder software was utilized to simulate metro fire and evacuation process. The variation of temperature, CO concentration, and visibility inside carriage and outside walkaway were studied to explore the characteristic of fire and smoke. Evacuation time, speed, density, and path were analyzed for six cases considering the influence of railing settings on evacuation walkaway and the use of track bed. The impact of smoke on movement speed reduction and temperature on the available door numbers were taken into consideration. Results revealed that the temperature of accident carriage rose to tenability limit after 50 s and the visibility decreased to 5 m within 150 s. CO concentration was below safety criteria due to sufficient oxygen. Temperature was the most important factor that leads to the risk of evacuation, especially inside the accident carriage. The length of evacuation walkaway could highly reduce evacuation time and density. Railings had a negative impact on evacuation while the usage of track bed had a positive effect. Besides, the impact of railings was not as significant as the usage of the track bed. Research results can provide decision-making reference for fire protection and evacuation design to alleviate congestion and improve safety management. |
| format | Article |
| id | doaj-art-2cda40493a364a3b94c53c579a36d662 |
| institution | Kabale University |
| issn | 1687-5605 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Modelling and Simulation in Engineering |
| spelling | doaj-art-2cda40493a364a3b94c53c579a36d6622025-02-03T01:30:23ZengWileyModelling and Simulation in Engineering1687-56052024-01-01202410.1155/2024/6058039Study on Elevated Interval Evacuation of Metro Train considering the Influence of Fire, Railings, and Track BedJianyao Tu0Bozhezi Peng1Liwei Bai2Chaoyang Li3Yi Zhang4School of Naval ArchitectureSchool of Naval ArchitectureSchool of Naval ArchitectureSchool of Naval ArchitectureSchool of Naval ArchitectureElevated metro is a typical type of urban rail transit that operates on viaducts. Due to its fast construction speed and low cost, it plays an important role in transportation systems with dense concentrations of people. Once a fire accident occurs in rush hour, it will cause high casualty and enormous injuries. In this regard, studying the characteristics of fire smoke spread and passengers’ evacuation is of profound significance. In this paper, Pyrosim and Pathfinder software was utilized to simulate metro fire and evacuation process. The variation of temperature, CO concentration, and visibility inside carriage and outside walkaway were studied to explore the characteristic of fire and smoke. Evacuation time, speed, density, and path were analyzed for six cases considering the influence of railing settings on evacuation walkaway and the use of track bed. The impact of smoke on movement speed reduction and temperature on the available door numbers were taken into consideration. Results revealed that the temperature of accident carriage rose to tenability limit after 50 s and the visibility decreased to 5 m within 150 s. CO concentration was below safety criteria due to sufficient oxygen. Temperature was the most important factor that leads to the risk of evacuation, especially inside the accident carriage. The length of evacuation walkaway could highly reduce evacuation time and density. Railings had a negative impact on evacuation while the usage of track bed had a positive effect. Besides, the impact of railings was not as significant as the usage of the track bed. Research results can provide decision-making reference for fire protection and evacuation design to alleviate congestion and improve safety management.http://dx.doi.org/10.1155/2024/6058039 |
| spellingShingle | Jianyao Tu Bozhezi Peng Liwei Bai Chaoyang Li Yi Zhang Study on Elevated Interval Evacuation of Metro Train considering the Influence of Fire, Railings, and Track Bed Modelling and Simulation in Engineering |
| title | Study on Elevated Interval Evacuation of Metro Train considering the Influence of Fire, Railings, and Track Bed |
| title_full | Study on Elevated Interval Evacuation of Metro Train considering the Influence of Fire, Railings, and Track Bed |
| title_fullStr | Study on Elevated Interval Evacuation of Metro Train considering the Influence of Fire, Railings, and Track Bed |
| title_full_unstemmed | Study on Elevated Interval Evacuation of Metro Train considering the Influence of Fire, Railings, and Track Bed |
| title_short | Study on Elevated Interval Evacuation of Metro Train considering the Influence of Fire, Railings, and Track Bed |
| title_sort | study on elevated interval evacuation of metro train considering the influence of fire railings and track bed |
| url | http://dx.doi.org/10.1155/2024/6058039 |
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