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Structural connections glued between steel and wood bars are a great potential alternative when compared to the usual connections, combining high mechanical resistance, durability in corrosive environments and improved aesthetics. However, there are no consensual numerical formulations for the prediction of their load capacity, besides there are no standardized test methodologies and execution procedures. Among the parameters that interfere in the mechanical resistance of the connections is the angle formed between the bar and the wood fibres, related with the wood drilling orientation during the execution. The purpose of this work is to assess the influence of the bond slimness and wood density on the deviations occurring during the drilling. Drilling operations with constant diameter and variable length were performed in citriodora corymbia and maçaranduba (manilkara elata) woods. The test to determine the basic density of woods showed values of 701.80 kg/m3 for corymbia citriodora and 962.54 kg/m3 for maçaranduba. It was found that the angles between the steel bars and the wood fibres increased with the density and with the slimness of the connection.

brazilian applied science review

Influência da densidade básica de madeiras em furações para ligações coladas com barras de aço / Influence of the basic density of wood in drillings for glued connections with steel bars