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Fire Resistance of Loaded I-Section Column from Light Gauge Steel Thin-Walled Profiles

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Proceedings of EECE 2019 (EECE 2019)

Abstract

This chapter presents the fire resistance calculation of the loaded I-section thin-walled steel column 380 × 260 mm and consists of 2× C-shaped profiles 380 × 125 × 30 × 3.5 without fire protection. There were considered some theoretical dependences of the fire resistance determination according to Russian and European standards, temperature gradient modeling in SOFiSTiK PC, and a comparison with the results of experimental tests. Modeling a section with an air buffer showed good convergence with the results according to the European standard, and without it, to the Russian one. This is due to the presence in the calculation of the correction factor of the shadow effect ksh. Ignoring the shadow effect leads to conservative solutions similar to the Russian standard. Theoretical dependencies according to regulatory documents showed a large deviation from the actual results of fire tests. Critical temperatures of 594.09 °C (Russian standard) and 547.27 °C (European standard) differ by more than 20% from the experimental values −451.3 °C. The obtained approximation of experimental data in the form of a mathematical temperature dependence on time will make it possible to predict an increase in temperature in thin-walled profiles of other geometric sizes and configurations.

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Acknowledgements

The authors thank the company OJSC «Tizol» and personally Mansurov M. G., Konyshev A. P. and Kuznetsov E. B., as well as the company LLC «Andrometa» and personally Shukhardin A. A. and Polevaya I. V.

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Correspondence to Ivan Dmitriev .

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Gravit, M., Dmitriev, I. (2020). Fire Resistance of Loaded I-Section Column from Light Gauge Steel Thin-Walled Profiles. In: Anatolijs, B., Nikolai, V., Vitalii, S. (eds) Proceedings of EECE 2019. EECE 2019. Lecture Notes in Civil Engineering, vol 70. Springer, Cham. https://doi.org/10.1007/978-3-030-42351-3_11

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  • DOI: https://doi.org/10.1007/978-3-030-42351-3_11

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  • Online ISBN: 978-3-030-42351-3

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