کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
256439 | 503550 | 2016 | 8 صفحه PDF | دانلود رایگان |
• 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.
Journal: Construction and Building Materials - Volume 102, Part 2, 15 January 2016, Pages 1093–1100