Journal
ENGINEERING STRUCTURES
Volume 211, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2020.110385
Keywords
Reinforced timber; glulam; Composite; Fibre reinforcement; Bending resistance; Strength; Design model
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Funding
- Swiss Commission for Technology and Innovation [16006.1 PFIW-IW]
- Inspire AG, Switzerland
- Roth Burgdorf AG, Switzerland
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A new model to determine the bending resistance of fibre reinforced glulam beams is presented. The model grounds on basic mechanical relations. New approaches are introduced to model the softening behaviour of the timber in the compression zone and the mechanical interaction of the reinforcement with the timber in the tension zone. This interaction considers the crack-bridging effect of the reinforcement. Localised phenomena such as the initiation of cracks in the tension zone or the formation of compression folds are modelled in a mechanical coherent way. In comparison with small-scale and full-scale experiments, the new model provides good results on both the characteristic as well as the mean level of the bending resistance. The new model is formulated in such a way that it can be implemented in a spreadsheet.
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