低真空隧道列车车厢内部火灾温度分布特征

doi:10.16265/j.cnki.issn1003-3033.2024.02.1222

中国安全科学学报 ›› 2024, Vol. 34 ›› Issue (2): 138-143.doi: 10.16265/j.cnki.issn1003-3033.2024.02.1222

低真空隧道列车车厢内部火灾温度分布特征

庞世俊¹(), 陈大伟¹, 郗艳红²^,**()

¹ 中车青岛四方机车车辆股份有限公司,山东青岛 266111
² 北京交通大学土木建筑工程学院,北京 100044

收稿日期:2023-08-10 修回日期:2023-11-17 出版日期:2024-02-28
通讯作者:
** 郗艳红(1980—),女,河北唐山人,博士,副教授,主要从事城市及轨道交通工程的风灾与火灾安全与控制研究。E-mail: yhxi@bjtu.edu.cn。
作者简介:
庞世俊 (1979—),男,河南商丘人,硕士,高级工程师,主要从事轨道车辆工业设计与人因工程等方面的工作。E-mail: pangshijun@126.com。
基金资助:
国家重点研发计划项目(2016YFB1200600)

Temperature distribution characteristics of high-speed train fire in low vacuum tunnel

PANG Shijun¹(), CHEN Dawei¹, XI Yanhong²^,**()

¹ China Railway Rolling Stock Corporation Qingdao Sifang Locomotive & Rolling Stock Co., Ltd., Qingdao Shandong 266111, China
² School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

Received:2023-08-10 Revised:2023-11-17 Published:2024-02-28

摘要/Abstract

摘要：

为解决低真空隧道内高速列车运营时,火灾突发事件中出现的危险性、列车结构的完整性及人员安全等问题,以低真空隧道内的高速列车车厢为研究对象,首先用数值模拟的方法,探究着火车厢内部发生火灾后的温度衰减特征;然后分析相邻车厢内部的温度分布情况;最后研究着火车厢内部最大温度的分布特征。结果表明:着火车厢及相邻车厢顶棚处沿着纵向的温度呈指数形式衰减;相邻车厢内,功率对温度衰减影响较大,即:低火源功率(0.3~0.6 MW)下,高温烟气蔓延相对较弱,相邻车厢内乘客相对安全;中火源功率(0.7~1.1 MW)下,高温烟气蔓延显著,由于受到车厢壁面以及车门的影响出现温度突变点;高火源功率(1.2~1.5 MW)下,热羽流强度较高,高温烟气蔓延受车厢壁面以及车门的影响相对较小,在车厢连接部分与相邻车厢内的高温蔓延趋势基本一致。车厢内的最大温度与火源功率及火源至顶棚的距离有关,并存在线性关系。

关键词: 低真空隧道, 高速列车, 车厢内部, 列车火灾, 温度分布, 最大温度

Abstract:

In order to solve the problems such as the danger, the integrity of the train structure and the safety of personnel when the high-speed train was operated in a low-vacuum tunnel, the temperature attenuation characteristics of the high-speed train compartment in a low-vacuum tunnel in a fire were explored by numerical simulation. Then the temperature distribution inside the adjacent carriages was analyzed. Finally, the distribution characteristics of the maximum temperature inside the burning carriage were studied. The results show that the temperature of the burning carriage and adjacent carriage roof decreases exponentially along the longitudinal direction. In adjacent compartments, the power has an effect on temperature attenuation. At low fire source power (0.3-0.6 MW), the high temperature smoke spread is relatively weak, and passengers in the adjacent carriages are relatively safe. At medium source power (0.7-1.1 MW), the high temperature smoke spreading is significant, and the temperature abrupt point appears due to the influence of carriage wall and door. At high fire source power (1.2-1.5 MW), the heat plume intensity is higher, and high temperature smoke spread is relatively less affected by carriage wall and door, and temperature spreading trend in the connecting part of carriage is basically the same as that in the adjacent carriage. The maximum temperature in the carriage is related to power of fire source and distance from fire source to the ceiling, and there is a linear relationship.

Key words: low vacuum tunnel, high-speed train, inside of train, train fire, temperature distribution, maximum temperature

中图分类号:

X932爆炸安全与防火、防爆

庞世俊, 陈大伟, 郗艳红. 低真空隧道列车车厢内部火灾温度分布特征[J]. 中国安全科学学报, 2024, 34(2): 138-143.

PANG Shijun, CHEN Dawei, XI Yanhong. Temperature distribution characteristics of high-speed train fire in low vacuum tunnel[J]. China Safety Science Journal, 2024, 34(2): 138-143.

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低真空隧道列车车厢内部火灾温度分布特征

Temperature distribution characteristics of high-speed train fire in low vacuum tunnel

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