| Title: | Model uncertainty in a parametric fire curve approach : a stochastic correction factor for the compartment fire load density |
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| Authors: | ID Put, Florian (Author)
ID Lucherini, Andrea (Author)
ID Merci, Bart (Author)
ID Van Coile, Ruben (Author) |
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| Files: |  PDF - Presentation file. (1,16 MB, This file will be accessible after 05.02.2026)
MD5: 85098953ED252D2897926AD343EB9C6F
 URL - Source URL, visit https://doi.org/10.1016/j.firesaf.2024.104113
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | A commonly used approach to represent the thermal load in a compartment fire is the Eurocode Parametric Fire Curve (EPFC), which specifies gas temperatures (or rather adiabatic surface temperatures). Recognizing the significant deviations between real fires and the EPFC framework, the concept of model uncertainty is explored. This study does not aim to assess or improve the EPFC, but introduces a model uncertainty, allowing for reliability-based structural fire engineering (SFE). It presents a stochastic correction factor for the fire load density, based on the maximum temperature in steel sections. The focus is on the fire load density, but in general other parameters can be jointly taken into account as well. This correction factor considers protected and un- protected sections, incorporating variations in section factor and protection thickness. The findings reveal that the fire load density within the EPFC framework can be modified to better represent the severity of fire ex- periments. This approach ensures physical consistency of the obtained compartment gas temperatures, as opposed to alternative approaches for addressing the EPFC model uncertainty. While promising results are evident in this proof of concept, exploration for other types of structural elements and evaluation for structural systems is necessary before integration into design practices. |
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| Keywords: | structural fire engineering, compartment fires, fire load density, steel structures, reliability, probability of failure |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 05.02.2024 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 1-11 |
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| Numbering: | Vol. 141, [article no.] 104113 |
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| PID: | 20.500.12556/DiRROS-18677  |
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| UDC: | 62 |
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| ISSN on article: | 1873-7226 |
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| DOI: | 10.1016/j.firesaf.2024.104113 |
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| COBISS.SI-ID: | 191319043 |
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| Copyright: | © 2024 Elsevier Ltd. All rights reserved. |
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| Note: | Opis vira z dne 4. 4. 2024;
Nasl. z nasl. zaslona;
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| Publication date in DiRROS: | 17.04.2024 |
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| Views: | 69 |
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| Downloads: | 23 |
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