Modelling of fastener flexibility in CFRP strengthened timber-framed walls using modified -method
✍ Scribed by Miroslav Premrov; Peter Dobrila
- Book ID
- 104017890
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 673 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0141-0296
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✦ Synopsis
The paper provides semi-analytical modelling for prefabricated timber-framed walls using the modified γ -method. The walls are composed of a timber frame and gypsum plasterboards (GPB) which are flexibly connected to the timber frame. Because the tensile strength of the GPB is approximately 10-times lower than the compressive one, it is convenient to strengthen the boards in their tensile diagonal direction with carbon fibre-reinforced polymer (CFRP) strips, which are glued to the boards. Additionally, in the proposed mathematical model the classical beam theory is used taking into account a fasteners' flexibility in the timber frame -GPB connecting area, as well as crack appearing in the GPB and an influence of the inserted CFRP strips. Therefore the CFRP strip contribution is considered with a modified slip modulus which results in the fictive increased stiffness coefficient of the fasteners (γ yi ).