Modelling of fastener flexibility in CFRP strengthened timber-framed walls using modified <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>γ</mi></math>-method: Fid-Bau Portal

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Modelling of fastener flexibility in CFRP strengthened timber-framed walls using modified $γ$ -method

Premrov, Miroslav / Dobrila, Peter

AbstractThe 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 ( $γ_{y i}$ ).

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Modelling of fastener flexibility in CFRP strengthened timber-framed walls using modified $γ$ -method

Premrov, Miroslav / Dobrila, Peter

AbstractThe 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 ( $γ_{y i}$ ).

Modelling of fastener flexibility in CFRP strengthened timber-framed walls using modified $γ$ -method

Premrov, Miroslav / Dobrila, Peter

AbstractThe 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 ( $γ_{y i}$ ).

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Title:

Modelling of fastener flexibility in CFRP strengthened timber-framed walls using modified $γ$ -method

Contributors:

Premrov, Miroslav (author) / Dobrila, Peter (author)

Published in:

Engineering Structures ; 30 ; 368-375

Publication date:

2007-04-02

Size:

8 pages

ISSN:

DOI:

https://doi.org/10.1016/j.engstruct.2007.04.003

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Timber , Structures , Walls , CFRP , Modelling

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