Refining a tabular method for assessing the fire resistance of reinforced concrete structures
DOI:
https://doi.org/10.15587/1729-4061.2023.286041Keywords:
stairwell flight, fire, tabular method, refined method, fire testsAbstract
This paper reports the analysis of fire resistance assessment methods of building structures. Based on the results, it was established that conducting fire tests is not expedient and harmful to the environment. The use of estimation fire resistance assessment methods for reinforced concrete staircases is not considered possible due to the lack of appropriate tables with fire resistance classes for the tabular method. The use of the estimation zone method is also impossible because of the lack of temperature nomograms of temperature distribution during exposure to the standard fire temperature regime. There are also no described procedures for applying the estimation refined method for reinforced concrete staircases. So, using mathematical models, the existing type of reinforced concrete staircase was reproduced. Employing the finite-element method, the behavior of reinforced concrete stairwells under the influence of fire was investigated.
Based on the results of these experiments, it was analyzed which structural geometric parameters of reinforced concrete stairwells have the greatest influence on their fire resistance. In this way, three independent, most significant geometric parameters of reinforced concrete stairwells were established – the height of the solid base, the thickness of the protective layer of the lower row of reinforcing bars, and the length of the span.
Therefore, the ranges of the most significant structural geometric parameters of reinforced concrete stairwells were used to build a regression dependence of the fire resistance limit on these parameters in order to design a full factorial numerical experiment.
After proving the adequacy of the results obtained according to the regression dependence, tables were constructed with the geometric parameters of reinforced concrete stairwells to determine the compliance of these structures with the required fire resistance class. The use of these tables will make it possible to reduce the risks of threats to human life and health during a fire by determining the possibility of using these structures with a guaranteed fire resistance class during design
References
- Andronov, V., Pospelov, B., Rybka, E. (2016). Increase of accuracy of definition of temperature by sensors of fire alarms in real conditions of fire on objects. Eastern-European Journal of Enterprise Technologies, 4 (5 (82)), 38–44. doi: https://doi.org/10.15587/1729-4061.2016.75063
- Pospelov, B., Andronov, V., Rybka, E., Meleshchenko, R., Gornostal, S. (2018). Analysis of correlation dimensionality of the state of a gas medium at early ignition of materials. Eastern-European Journal of Enterprise Technologies, 5 (10 (95)), 25–30. doi: https://doi.org/10.15587/1729-4061.2018.142995
- Pospelov, B., Meleshchenko, R., Krainiukov, O., Karpets, K., Petukhova, O., Bezuhla, Y. et al. (2020). A method for preventing the emergency resulting from fires in the premises through operative control over a gas medium. Eastern-European Journal of Enterprise Technologies, 1 (10 (103)), 6–13. doi: https://doi.org/10.15587/1729-4061.2020.194009
- Hajiloo, H., Green, M. F. (2019). GFRP reinforced concrete slabs in fire: Finite element modelling. Engineering Structures, 183, 1109–1120. doi: https://doi.org/10.1016/j.engstruct.2019.01.028
- Hvozd, V., Tishchenko, E., Berezovskyi, A., Sidnei, S. (2021). Research of Fire Resistance of Elements of Steel Frames of Industrial Buildings. Materials Science Forum, 1038, 506–513. doi: https://doi.org/10.4028/www.scientific.net/msf.1038.506
- Kovalov, A., Otrosh, Y., Chernenko, O., Zhuravskij, M., Anszczak, M. (2021). Modeling of Non-Stationary Heating of Steel Plates with Fire-Protective Coatings in Ansys under the Conditions of Hydrocarbon Fire Temperature Mode. Materials Science Forum, 1038, 514–523. doi: https://doi.org/10.4028/www.scientific.net/msf.1038.514
- World Fire Statistics. Available at: https://www.ctif.org/world-fire-statistics
- Concrete Reinforcing Steel Institute - CRSI (2015). Fire Resistance of Reinforced Concrete Buildings. CRSI Technical Note ETN-B-1-16. Schaumburg, Illinois, 6.
- Nuianzin, O., Sidnei, S., Zayika, P., Fedchenko, S., Alimov, B. (2021). Determining the Dependence of Fire Parameters in a Cable Tunnel on its Characteristics. IOP Conference Series: Materials Science and Engineering, 1021 (1), 012023. doi: https://doi.org/10.1088/1757-899x/1021/1/012023
- Nuianzin, O., Pozdieiev, S., Sidnei, S., Kostenko, T., Borysova, A., Samchenko, T. (2023). Increasing the Efficiency and Environmental Friendliness of Fire Resistance Assessment Tools for Load-Bearing Reinforced Concrete Building Structures. Ecological Engineering & Environmental Technology, 24 (4), 138–146. doi: https://doi.org/10.12912/27197050/161923
- Kovalov, A., Purdenko, R., Otrosh, Y., Tоmеnkо, V., Rashkevich, N., Shcholokov, E. et al. (2022). Assessment of fire resistance of fireproof reinforced concrete structures. Eastern-European Journal of Enterprise Technologies, 5 (1 (119)), 53–61. doi: https://doi.org/10.15587/1729-4061.2022.266219
- BS 476-20:1987 Fire tests on building materials and structures. Method for determination of the fire resistance of elements of construction (general principles) (AMD 6487). Available at: https://www.thenbs.com/PublicationIndex/documents/details?Pub=BSI&DocID=13546
- Sadkovyi, V., Andronov, V., Semkiv, O., Kovalov, A., Rybka, E., Otrosh, Yu. et al.; Sadkovyi, V., Rybka, E., Otrosh, Yu. (Eds.) (2021). Fire resistance of reinforced concrete and steel structures. Kharkiv: РС ТЕСHNOLOGY СЕNTЕR, 180. doi: https://doi.org/10.15587/978-617-7319-43-5
- Piloto, P. A., Balsa, C., Santos, L. M., Kimura, É. F. (2020). Effect of the load level on the resistance of composite slabs with steel decking under fire conditions. Journal of Fire Sciences, 38 (2), 212–231. doi: https://doi.org/10.1177/0734904119892210
- Shnal, T., Pozdieiev, S., Yakovchuk, R., Nekora, O. (2020). Development of a Mathematical Model of Fire Spreading in a Three-Storey Building Under Full-Scale Fire-Response Tests. Proceedings of EcoComfort 2020, 419–428. doi: https://doi.org/10.1007/978-3-030-57340-9_51
- Otrosh, Y., Surianinov, M., Golodnov, A., Starova, O. (2019). Experimental and Computer Researches of Ferroconcrete Beams at High-Temperature Influences. Materials Science Forum, 968, 355–360. doi: https://doi.org/10.4028/www.scientific.net/msf.968.355
- Pozdieiev, S., Nizhnyk, V., Feshchuk, Y., Nekora, V., Nuianzin, O., Shnal, T. (2021). Investigation of the influence of the configuration of the fire furnace chamber on the temperature regime during the implementation of tests for fire resistance. Eastern-European Journal of Enterprise Technologies, 4 (1 (112)), 34–40. doi: https://doi.org/10.15587/1729-4061.2021.239235
- Nesen, I. (2022). Research of the behavior of a reinforced concrete staircase in the conditions of the thermal influence of fire. Scientific Bulletin: Сivil Protection and Fire Safety, 2 (14), 143–152. doi: https://doi.org/10.33269/nvcz.2022.2(14).143-152
- EN 1992-1-2:2004 Eurocode 2: Design of concrete structures - Part 1-2: General rules - Structural fire design. Available at: https://www.phd.eng.br/wp-content/uploads/2015/12/en.1992.1.2.2004.pdf
- BS EN 1992-1-1:2004+A1:2014. Eurocode 2: Design of concrete structures General rules and rules for buildings. Available at: https://www.en-standard.eu/bs-en-1992-1-1-2004-a1-2014-eurocode-2-design-of-concrete-structures-general-rules-and-rules-for-buildings/
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Copyright (c) 2023 Ivan Nesen, Stanislav Sidnei, Olena Petukhova, Maxim Zhuravskij, Eugene Tishchenko
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