Evaluation of fire resistance of steel building structures taking into account the influence of heat exchange with adjacent structures

Authors

  • Sergey S. Botyan State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25 https://orcid.org/0000-0002-8593-4413
  • Sergey M. Zhamoydik State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25 https://orcid.org/0000-0003-0407-5176
  • Vadim A. Kudryashov State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25 https://orcid.org/0000-0003-4889-1060
  • Nikolay M. Olesiyuk State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25 https://orcid.org/0000-0001-5925-1371
  • Ivan A. Pischenkov State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

DOI:

https://doi.org/10.33408/2519-237X.2021.5-3.278

Keywords:

fire resistance, intumescent fire protection, effective thermophysical characteristics, inverse problem of thermal conductivity, standard temperature conditions, steel structures, finite element method

Abstract

Purpose. On the basis of experimental studies and theoretical data, to determine the thermophysical characteristics of an intumescent fire retardant and evaluate the heating of steel structures with intumescent fire protection of the outer surface, taking into account the adjoining of a concrete coating, as well evaluate the effect of heat transfer with a concrete coating on the optimal layer thickness of an intumescent fire retardant to ensure the required fire resistance limit.

Methods. Modeling in the system of finite element analysis.

Findings. On the basis of a series of experimental and theoretical studies in the ANSYS finite element analysis system, the thermotechnical problem of fire resistance of steel structures with fire protection of the outer surface based on an intumescent composition was solved, taking into account the abutment of a concrete coating. Experimental studies are used to assess the effective values of the thermophysical characteristics of an intumescent composition by solving the inverse problem of thermal conductivity for a computational finite element model using parametric optimization methods. The obtained thermophysical characteristics made it possible to evaluate the heating of steel structures with fire protection, taking into account heat transfer with a concrete coating. Depending on the required fire resistance level and the type of the considered structures (floor slab) and the design situation, taking into account heat exchange with the concrete coating, the optimal thickness of the fire retardant coating that provides the required fire resistance level is reduced by 1.2 ... 4.4 times.

Application field of research. The results can be used to solve the fire resistance problems of steel structures with partial and full fire protection of the outer surface during the design and construction of buildings and structures.

Author Biographies

Sergey S. Botyan, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

Chair of Fire Safety, Senior Lecturer

Sergey M. Zhamoydik, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

Chair of Fire Safety, Professor; PhD in Technical Sciences, Associate Professor

Vadim A. Kudryashov, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

Department of Scientific and Innovation Activity, Head of Department of Scientific and Innovation Activity; PhD in Technical Sciences, Associate Professor

Nikolay M. Olesiyuk, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

International Cooperation Sector, Head of Sector

Ivan A. Pischenkov, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

Faculty of Emergency Prevention and Elimination, Cadet

References

Pekhotikov A.V. Ognestoykosti izgibaemykh stal'nykh konstruktsiy [Fire resistance of bent steel structures]: PhD tech. sci. diss.: 05.26.03. Moscow, 2008. 198 p. (rus)

Zhamoidik, S.M. Ognestoykost' stal'nykh kolonn s konstruktivnoy ognezashchitoy [Fire resistance of steel columns with constructive fire protection]: PhD tech. sci. diss.: 05.26.03. Minsk, 2017. 129 p. (rus)

Batyan S.S., Kudryashov V.A., Zhamoidik S.M., Kreer L.A., Olesiyuk N.M., Pischenkov I.A. Otsenka nagreva stal'nykh nesushchikh elementov zdaniya s uchetom primykayushchikh konstruktsiy [Assessment of heating of steel bearing elements of a building taking into account adjoining structures] Proc. VII Intern. corresp. scientific-practical conf. «Problemy obespecheniya bezopasnosti lyudey pri pozhare i vzryve», Minsk, December 23, 2020. University of Civil Protection of the MES of the Republic of Belarus. Minsk: UCP, 2021. P. 15. (rus)

Gravit M.V. Otsenka porovogo prostranstva penokoksa ognezashchitnykh vspuchivayushchikhsya pokrytiy [Evaluation of the pore space of the foam coke flame retardant intumescent coatings Fire and Explosion Safety, 2013. No 5. Pp. 33–37. (rus)

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Published

2021-08-13

How to Cite

Botyan, S. S., Zhamoydik, S. M., Kudryashov, V. A., Olesiyuk, N. M. and Pischenkov, . I. A. (2021) “Evaluation of fire resistance of steel building structures taking into account the influence of heat exchange with adjacent structures”, Journal of Civil Protection, 5(3), pp. 278–288. doi: 10.33408/2519-237X.2021.5-3.278.