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Numerical simulation of the fire protection effect and load level on glt timber columns

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Resumo:The next generation of the Eurocode EN 1995-1-2 modifies the Effective Cross-Section Method (ECSM), where an adequate char depth reduces the initial timber cross-section. This char depth is based on the notional char layer (European Charring Model-ECM) and a zero-strength layer to compensate for the loss of strength and stiffness of heated but uncharred wood. The remaining effective cross-section has wood's strength and stiffness properties at room temperature and may be used to determine the load-bearing capacity. This investigation deals with gypsum-protected Glue Laminated Timber (GLT) columns under fire. The finite element method is also used to determine the fire resistance time based on a geometrical and material nonlinear analysis (GMNIA). Doubling the number of protection layers, from 12.5 mm thick to 25 mm thick, the fire resistance increases by an amount of 72% to 100% when the load level changes from 6% to 36%, with respect to load bearing at room temperature.
Autores principais:Piloto, Paulo A.G.
Outros Autores:Lorenzo, Manuel; Gavilán, Ana B.; Sánchez-Haro, Javier
Assunto:Fire Glue Laminated Timber Gypsum protection columns load level
Ano:2025
País:Portugal
Tipo de documento:comunicação em conferência
Tipo de acesso:acesso aberto
Instituição associada:Instituto Politécnico de Bragança
Idioma:inglês
Origem:Biblioteca Digital do IPB

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