Withdrawal Properties Of Threaded Rods Embedded In Glued-Laminated Timber Elements

The competitiveness of timber structures is largely governed by the design and effectiveness of the connections. Connections with long axially loaded self-tapping screws or threaded rods embedded with an inclination to the grain direction can be an alternative to connections with dowel-type fasteners or glued-in rods. Self-tapping screws and especially threaded rods with large diameters feature high withdrawal capacity and stiffness. This ability makes them suitable as fasteners in connections in order to realize stiff and strong joints. Eurocode 5 does not provide rules for the estimation of the withdrawal stiffness of axially loaded fasteners, which is necessary for the determination of the stiffness of connections. Some rules can be…

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