Investigation of Design Parameters Facade Fire-Fighting Eaves for Prevent the Spread of Fires on Facade Structures of High-Rise Buildings (original) (raw)
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Bulletin of Lviv State University of Life Safety, 2021
Purpose. Applying FDS modelling to detect the influence of structural parameters of facade fire eaves, the effectiveness of fire prevention by vertical building structures in high-rise buildings.Methods. To calculate the temperature in the high-rise building model used Pyrosim computer system that serves as the user's shell application Fire Dynamics Simulator (FDS). This FDS system uses numerical algorithms to solve the complete Navier-Stokes differential equation system to determine temperature and other hazardous factors during a fire.Results. The results of FDS modelling during substantiation of constructive parameters of fire eaves, which protrude beyond the facade and located on the border of fire compartments along the contour of high-rise buildings with a nominal height of more than 73.5 m, are presented. Premises and substantiated the criteria for the destruction of external light openings (windows) as an integral factor in the spread of fire on the external vertical bui...
Bulletin of Lviv State University of Life Safety, 2022
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Fire Safety, 2021
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Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden Bauteilen: ENV 13381-4:2002. Teil 4. Brandschutzmabnahmen für Stahlbauteile Deutsche Fassung. 3 Test methods for determining the contribution to the fire resistance of stuctural members: ENV 13381-2:2002.-Part 2: Vertical protective membranes. 4 Еврокод 3. Проектирование стальных конструкций. Ч. 1-2. Общие правила определения огнестойкости: ТКП EN 1993-1-2-2009 [Электронный ресурс] // Полнотекстовая информационно-поисковая система «Строй-ДОКУМЕНТ».-Электрон. текстовые дан. и прогр. (700 Мб).-Минск: НПП РУП «Стройтехнорм», 2007.-1 электрон. опт. диск (CD-ROM). Пожарная и промышленная безопасность (технические науки) Fire and industrial safety (technical sciences) 269
Assessment of fire exposure on the load bearing capacity of basement storey walls
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This paper presents the numerical modelling of the fire exposure on structural element and its static analysis taking account of the material properties reduction due to elevated temperature. The reinforced concrete wall of basement storey was subjected to one side fire exposure. Advanced calculation methods were used to assess the fire exposure on the structural element as most reliable and approximate to fire test results. Thermal analysis was performed with LIRA-CAD software by the simulating of three main heat-transfer ways: thermal conductivity, convection and radiation. As a result of the thermal analysis, temperature distribution in the concrete and reinforcement parts of the structural element cross-section was obtained. The thermal analysis of the wall structural element was performed for 120 minutes in standard fire exposure. Reduction factors for the strength of concrete and reinforcement steel were determined based on the temperature distribution in the wall structural e...