Effect of radiation inside square hollow section under moderate non-symmetric fire

  • Jolanta Bączkiewicz | jolanta.baczkiewicz@tut.fi Laboratory of Civil Engineering, Tampere University of Technology, Tampere, Finland.
  • Sami Pajunen Laboratory of Civil Engineering, Tampere University of Technology, Tampere, Finland.
  • Markku Heinisuo Laboratory of Civil Engineering, Tampere University of Technology, Tampere, Finland.

Abstract

The temperature calculation of hollow steel sections at elevated temperatures is a well-documented and standard procedure. Through this standard procedure, the temperature can be calculated by assuming a uniform gas temperature all around the section, which is called a symmetric fire in this paper. Embedding in surrounding structures or connecting to another steel member results in non-symmetric heat distribution in the member. This non-symmetricity of the surrounding temperature may cause surface- to-surface heat radiation inside the member, thus affecting the steel section temperature distribution. This effect is considered in this paper by adopting analytical and finite element method analysis.

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Published
2018-08-09
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Section
Original Articles
Keywords:
Steel member, hollow section, heat transfer, radiation
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How to Cite
Bączkiewicz, J., Pajunen, S., & Heinisuo, M. (2018). Effect of radiation inside square hollow section under moderate non-symmetric fire. Fire Research, 2(1). https://doi.org/10.4081/fire.2018.42