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CFRP strengthening for punching shear of interior slab-collumn connections

Sharaf, Mohamed H. / Soudki, Khaled A. / Dusen, Michael Van

This paper presents the results of an experimental investigation studying the effect of retrofitting interior slab-column connections against punching shear failure with externally bonded carbon fiber reinforced polymer (CFRP) strips. Six full-scale, 2000 mm-square x 150-mm-thick slab specimens were constructed. The effect of varying the CFRP strengthening amount and configuration on the load-carrying capacity of the slab specimens was investigated. Specimens were supported along their edges and tested to failure. Strengthened slabs showed an increase in stiffness between 29 and 60 % and in punching capacity between 6 and 16 % with respect to the control unstrengthened slab. An analytical model was refined to predict the punching shear capacity of the specimens strengthened with CFRP strips. The model takes into account both the configuration and amount of CFRP strips. The proposed model shows good agreement with the experimental results.

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CFRP strengthening for punching shear of interior slab-collumn connections

Sharaf, Mohamed H. / Soudki, Khaled A. / Dusen, Michael Van

This paper presents the results of an experimental investigation studying the effect of retrofitting interior slab-column connections against punching shear failure with externally bonded carbon fiber reinforced polymer (CFRP) strips. Six full-scale, 2000 mm-square x 150-mm-thick slab specimens were constructed. The effect of varying the CFRP strengthening amount and configuration on the load-carrying capacity of the slab specimens was investigated. Specimens were supported along their edges and tested to failure. Strengthened slabs showed an increase in stiffness between 29 and 60 % and in punching capacity between 6 and 16 % with respect to the control unstrengthened slab. An analytical model was refined to predict the punching shear capacity of the specimens strengthened with CFRP strips. The model takes into account both the configuration and amount of CFRP strips. The proposed model shows good agreement with the experimental results.

CFRP strengthening for punching shear of interior slab-collumn connections

Sharaf, Mohamed H. / Soudki, Khaled A. / Dusen, Michael Van

This paper presents the results of an experimental investigation studying the effect of retrofitting interior slab-column connections against punching shear failure with externally bonded carbon fiber reinforced polymer (CFRP) strips. Six full-scale, 2000 mm-square x 150-mm-thick slab specimens were constructed. The effect of varying the CFRP strengthening amount and configuration on the load-carrying capacity of the slab specimens was investigated. Specimens were supported along their edges and tested to failure. Strengthened slabs showed an increase in stiffness between 29 and 60 % and in punching capacity between 6 and 16 % with respect to the control unstrengthened slab. An analytical model was refined to predict the punching shear capacity of the specimens strengthened with CFRP strips. The model takes into account both the configuration and amount of CFRP strips. The proposed model shows good agreement with the experimental results.

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Title:

CFRP strengthening for punching shear of interior slab-collumn connections

Additional title:

CFRP-Verstärkung für das Stanzen von inneren Platte-Säule-Verbindungen

Contributors:

Sharaf, Mohamed H. (author) / Soudki, Khaled A. (author) / Dusen, Michael Van (author)

Published in:

Journal of Composites for Construction ; 10 ; 410-418

Publication date:

2006

Size:

9 Seiten, 8 Bilder, 5 Tabellen, 22 Quellen

ISSN:

DOI:

https://doi.org/10.1061/(ASCE)1090-0268(2006)10:5(410)

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Platte (Bauteil) , Säule (Stütze) , carbonfaserverstärkter Kunststoff , Verstärkung (Festigkeit) , Retrofitting , Streifen , Tragfähigkeit , Festigkeitserhöhung , Biegesteifigkeit , Stanzen , mechanisches Verbinden , Belastungsprüfung (Mechanik)

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