铁路隧道旅客列车火灾热释放速率的确定方法

发布时间：2018-06-27 04:02

本文选题：铁路隧道 + 列车火灾　；参考：《铁道标准设计》2017年01期

【摘要】：热释放速率(HRR)是影响火灾发展和严重程度的重要指标。受自身结构影响,铁路隧道内旅客列车一旦发生火灾,影响极为严重,因此需在确定热释放速率的前提下对隧道火灾进行预防设计,但目前并无针对我国普通旅客列车和动车组的实车试验成果可供设计采用。为此,在充分调研欧洲、美国等国内外学者对HRR的有关研究成果和规定的基础上,现场实测我国铁路列车参数及乘车人特征,通过数值模拟和现场试验对比分析的方法,得到不同火灾增长速率(FGR)条件下,最高温度和HRR之间的关系类似;同一FGR条件下,随HRR峰值的增大,最高温度随之升高。并结合国外大尺寸列车火灾试验曲线,对不同火灾规模、不同FGR下列车HRR峰值展开研究,最终确定动车组的HRR峰值为15MW,普通旅客列车的HRR峰值为20 MW,FGR为慢速,为防灾规范的修订和相关工程设计提供理论支撑。
[Abstract]:Heat release rate (HRR) is an important indicator of fire development and severity. Under the influence of its own structure, once the passenger train fire occurs in the railway tunnel, the influence is very serious, so it is necessary to design the tunnel fire prevention under the premise of determining the heat release rate. However, there are no actual test results for ordinary passenger train and EMU in China. Therefore, on the basis of full investigation of the relevant research results and regulations of HRR made by European, American and other domestic and foreign scholars, the parameters and passenger characteristics of railway trains in China are measured on the spot, and the methods of numerical simulation and comparative analysis of field tests are adopted. Under different fire growth rates (FGR), the relationship between the maximum temperature and HRR is similar, and under the same FGR condition, the maximum temperature increases with the increase of the peak value of HRR. Combined with the fire test curves of large scale trains abroad, the peak value of HRR of trains under different fire scale and FGR is studied. The peak value of HRR of EMU is 15MW, and that of ordinary passenger trains is 20MW / FGR. To provide theoretical support for the revision of disaster prevention code and related engineering design.
【作者单位】：西南交通大学交通隧道工程教育部重点实验室;中国铁路经济规划研究院;
【基金】：中国铁路总公司科技研究开发计划项目(2013T001);中国铁路总公司科技研究开发计划项目(2015T004-B)
【分类号】：U458;U298.4

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