火灾下箱板装配式钢结构温度分布规律研究

薛辰; 李然; 兰涛; 余志祥; 李泽旭

doi:10.13204/j.gyjzG22041415

火灾下箱板装配式钢结构温度分布规律研究

doi: 10.13204/j.gyjzG22041415

薛辰¹,
李然¹,
兰涛^1,2, ,,
余志祥²,
李泽旭²

1. 中国船舶重工集团国际工程有限公司, 北京 100121;
2. 西南交通大学土木工程学院, 成都 610031

基金项目:

国家重点研发计划项目(2019YFE0112900)

国家钢结构工程技术研究中心研发项目(YZB2019ky02)

中国船舶重工集团科技创新与研发项目(201815K)。

详细信息

作者简介:
薛辰,女,1996年出生,硕士。

通讯作者:
兰涛,男,1976年出生,博士,研究员,qd_lantao@163.com。

计量
- 文章访问数: 81
- HTML全文浏览量: 12
- PDF下载量: 2
- 被引次数: 0
出版历程
- 收稿日期: 2022-04-14
- 网络出版日期: 2023-05-25
- 刊出日期: 2023-01-20

Research on Temperature Distribution Laws of Prefabricated Box-Plate Steel Structures Under Fire

XUE Chen¹,
LI Ran¹,
LAN Tao^{1,2
, ,},
YU Zhixiang²,
LI Zexu²

1. CSIC International Engineering Co., Ltd., Beijing 100121, China;
2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China

摘要

摘要: 以一个模块单元组成的单层箱板结构和三个模块单元组成的三层箱板整体结构为研究对象,通过建立7种不同火灾场景下的火灾动力学模型和瞬态热分析模型,对比分析得到箱板钢结构空气温度场分布规律及结构传热规律。结果表明:当火源位于结构内部不同位置时,不同分区的温度-时间曲线差异较大,相比室内采用统一升温曲线的传统计算方法,分区计算更符合实际情况;空气温度场与结构温度场分布规律总体呈现一致趋势,火源所在楼层的温度随空间高度升高而升高,而由于楼层之间的密闭性和热空气的向上流动,火源上方楼层的温度曲线较为缓和,火源下方的楼层温度会较低且分布更均匀,体现了单层和三层箱板式钢结构室内空气温度场的分层性和区域性。
- 装配式钢结构 /
- 箱型结构 /
- 火灾模拟 /
- 温度场分布
Abstract: The fire dynamics models and the fire transient thermal analysis models of a single-story box-plate structure composed of one module unit and a three-story box-plate structure composed of three module units under seven different fire scenes were established. By comparing and analyzing, the distribution of temperature fields in indoor air and the law of heat transfer of box-plate steel structures were obtained. The results showed that: when the fire source was located in different locations, time-temperature varied greatly in different parts of the structure. Compared with the traditional calculation method of unified heating curve, the calculation method of space partition was more factual. The temperature field of the structures was similar to the air temperature field, which meant the temperature increased with the height at the floor of fire source, and because of the closed room and the upward flow of hot air, the temperature-time curves were gentler at the higher floor, while the temperature was low and distributed evenly at the lower floor which reflected the air temperature fields had distinguishing feature of stratification and regionality.
- prefabricated steel structure /
- box-type structure /
- fire simulation /
- temperature field distribution

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参考文献(16)

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