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

XUE Chen; LI Ran; LAN Tao; YU Zhixiang; LI Zexu

doi:10.13204/j.gyjzG22041415

Volume 53 Issue 1

Jan. 2023

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XUE Chen, LI Ran, LAN Tao, YU Zhixiang, LI Zexu. Research on Temperature Distribution Laws of Prefabricated Box-Plate Steel Structures Under Fire[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(1): 9-19. doi: 10.13204/j.gyjzG22041415

Citation:

XUE Chen, LI Ran, LAN Tao, YU Zhixiang, LI Zexu. Research on Temperature Distribution Laws of Prefabricated Box-Plate Steel Structures Under Fire[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(1): 9-19. doi: 10.13204/j.gyjzG22041415

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

doi: 10.13204/j.gyjzG22041415

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

Received Date: 2022-04-14
Available Online: 2023-05-25
Publish Date: 2023-01-20

Abstract

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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References(16)

References

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