[1]陈荣淋.水平火灾实验炉试验与模拟分析[J].华侨大学学报(自然科学版),2020,41(2):171-176.[doi:10.11830/ISSN.1000-5013.202001024]
　CHEN Ronglin.Experiment and Simulation of Horizontal Fire Test Furnace[J].Journal of Huaqiao University(Natural Science),2020,41(2):171-176.[doi:10.11830/ISSN.1000-5013.202001024]
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水平火灾实验炉试验与模拟分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第41卷
期数:
2020年第2期
页码:
171-176
栏目:
出版日期:
2020-03-20

文章信息/Info

Title:
Experiment and Simulation of Horizontal Fire Test Furnace
文章编号:
1000-5013(2020)02-0171-06
作者:
陈荣淋
华侨大学 土木工程学院, 福建 厦门 361021
Author(s):
CHEN Ronglin
College of Civil Engineering, Huaqiao University, Xiamen 361021, China
关键词:
火灾实验炉;  火灾动力学;  炉温曲线;  火灾模拟;  热平衡法
Keywords:
fire test furnace;  fire dynamics;  furnace temperature curve;  fire simulation;  thermal balance method
分类号:
TU352.403
DOI:
10.11830/ISSN.1000-5013.202001024
文献标志码:
A
摘要:
基于改进热平衡法,结合天然气燃烧的特点,采用火灾动力学模拟软件(FDS)构建水平火灾实验炉的数值模型,进行混凝土双向板火灾试验模拟研究.结果表明:通过控制燃料的供应速率控制燃烧机的输出热功率,可以实现水平火灾炉升温曲线与ISO 834的标准火灾升温曲线接近,模拟平均炉温与试验平均炉温最终误差为2.2%(22 ℃);水平炉烟道口温度高于平均炉温约87 ℃,与实际火灾实验炉烟道口频繁损坏现象吻合,因此,在实验炉设计中,应提高烟道与炉墙连接区域的设计耐火极限;FDS模拟得到的火灾炉内部及楼板受火面温度场呈不均匀分布,符合火灾实验炉各热电偶测点实测升温曲线不同的规律,温度场数据可用于研究非均匀温度场对混凝土板力学性能的影响.
Abstract:
Based on the improved heat balance method and combining the characteristics of natural gas combustion, a numerical model of horizontal fire experimental furnace was established by the fire dynamics simulator(FDS), and a simulation study of the two-way concrete slab under fire test was carried out. The research results show that: controlling the output thermal power of the burners by fuel supply rate, the temperature rise curve of the simulated horizontal fire furnace can be close to the standard temperature rise curve of fire in ISO 834, and the final error between the simulated and experimental average furnace temperatures is 2.2%(22 ℃); the simulated flue temperature of the horizontal furnace is about 87 ℃ higher than the average furnace temperature, which is consistent with the frequent damage of the flues in the furnace. Therefore, in the design of the experimental furnace, the design fire resistance limit of the connection area between the flue and the furnace wall should be increased; the temperature field inside the fire furnace and upon the slab fired surface obtained by the FDS simulation is nonuniformly distributed, which conforms to the different temperature rise curves of the thermocouple measurement points in the real two-way concrete slab fire test. The temperature field data simulated by FDS can be used to study the effect of nonuniform temperature field on the mechanical properties of concrete slab.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2020-01-19
通信作者: 陈荣淋(1981-),男,实验师,博士研究生,主要从事土木工程相关实验技术及计算机辅助仿真设计的研究.E-mail:501289999@qq.com.
基金项目: 国家自然科学基金资助项目(51778247, 51208217); 福建省自然科学基金资助项目(2017J01095)
更新日期/Last Update: 2020-03-20