Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
256439 | Construction and Building Materials | 2016 | 8 Pages |
•Anchorages of prestressing wires in timber may be achieved with gluing.•Glued anchorages are not suitable for outer (sun exposed) uses.•Anchorage with nuts are suitable and allow for controlled (re)-tightening.•All the systems show a potential for use with long or short (mass-production) elements.
The possibility of improving the bending strength of timber beams through prestress is discussed. Different prestressing and anchoring procedures are investigated: (i) post-tension, with mechanical anchorage on the ends of the wood elements; (ii) pre-tension, with the anchorages being either mechanical, as in the previous system, or glued, with the force being gradually transferred through shear stresses along a certain length of the wire/wood interface. The main conclusion is that any of the procedures may be advantageously used with either small (mass-production) or long glued-laminated timber beams, as a possible alternative to CFRP reinforced beams.