Browsing by Author "Aissa, Abderrahim"
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- Computational model for timber connections exposed to high temperaturesPublication . Aissa, Abderrahim; Fonseca, E.M.M.; Lamri, BelkacemThe aim of this work is to present an approach for wood-wood-wood connections design in double shear at ambient and high temperatures, using dowelled connectors. For each situation, all calculations will be performed to determine the cross-section and the number of dowels. A procedure will be presented to calculate the load carrying capacity per shear plane and per steel fastener, using a glued laminated in birch W-W-W timber GL28h. The designed connection will be considered unprotected at ambient temperature, and protected for high temperatures. In this study, it is important to determine the type of insulation material and the correct dimension for guarantee a fire resistance time. All developed study will contribute to the knowledge in these connections, where the wood material represents a complex behaviour in fire situations and the combination with steel dowels intensify the heat conduction inside the material. All proposed methodologies (analytical and numerical) could be used to study W-W-W connections with or without insulation material to assess and contribute for a safe design, at ambient and high temperatures. For mechanical analysis, the obtained numerical results were greater than the analytical results according the Eurocode. For thermal analysis, gypsum plasterboard can be considered as the best insulation material for the connection in study.
- Computational model for W-W-W connections at ambient and high temperaturesPublication . Aissa, Abderrahim; Fonseca, E.M.M.; Lamri, BelkacemThe aim of this work is to present an approach for wood‐wood‐wood (W‐W‐W) connections design in double shear at ambient and high temperatures, using dowelled connectors. For each situation, all calculations will be performed to determine the cross‐section and the number of fasteners. A procedure will be presented to calculate the load carrying capacity per shear plane and per steel fastener, using a glued laminated in birch W‐W‐W timber GL28h.
- Computational model for W-W-W connections at ambient and high temperaturesPublication . Aissa, Abderrahim; Fonseca, E.M.M.; Lamri, BelkacemThe use of wood, as a structural material, continues to grow far beyond traditional application. Timber connections are considered critical due to their resistance and durability, mainly depend on the join design of the different structural elements. They are subjected to localized stresses and strains, and may expose the overall stability of the structure. For imposed thermal loads under fire conditions, it remains important to improve the knowledge of the connection behaviour.
- Protected and unprotected cellular wooden slabs at elevated temperaturesPublication . Aissa, Abderrahim; Fonseca, E.M.M.; Lamri, BelkacemThe wood, as a structural material, continues to grow far beyond traditional applications. Connections are often considered as the critical point of timber structures because their resistance and durability mainly depend on the joining design in structural elements. For imposed thermal loads, it remains important to improve the knowledge of the connection behaviour under fire.
- Protected and unprotected W-W-W connection at elevated temperaturesPublication . Aissa, Abderrahim; Fonseca, E.M.M.; Lamri, BelkacemThe aim of this work is to present an approach for wood-wood-wood (W-W-W) connections design at high temperatures, using a glued laminated in birch timber GL28h, and steel dowelled connectors. All calculations will be performed to determine the cross-section and the number of fasteners at ambient temperature. The designed connection will be considered protected or unprotected with extra-thickness for high temperatures. All requirements. according standards (Eurocode 5: parts 1-1 and 1-2) were conducted to design the W-W-W connection at high temperatures and evaluate the fire resistance time of the element.
- Protected and unprotected W-W-W connection at elevated temperaturesPublication . Aissa, Abderrahim; Fonseca, E.M.M.; Lamri, BelkacemThe wood, as a structural material, continues to grow far beyond traditional applications. Connections are often considered as the critical point of timber structures because their resistance and durability mainly depend on the joining design in structural elements. For imposed thermal loads, it remains important to improve the knowledge of the connection behaviour under fire