An economical and easy-to-install strengthening method to enhance the punching shear capacity of slab–column connections in existing deficient flat-plate structures is presented in this study. Seven specimens representing typical interior slab–column connections were tested and experimental results are reported in detail. The strengthening scheme employs the use of in-house fabricated carbon fibre reinforced polymer (CFRP) dowels placed around the column stubs in different numbers and arrangements as vertical shear reinforcement. The test results indicated that the ultimate punching shear capacity of the strengthened specimens improved up to 1·33 times that of the specimen without any strengthening. The experimental punching shear capacities and observed failure modes of the specimens were compared with the estimations of strength and failure modes given by the punching shear strength provisions of three different concrete design codes.
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July 2010
Research Article|
July 01 2010
Punching shear strengthening of flat-slabs with CFRP dowels
H. Erdogan;
H. Erdogan
*
Kocaeli University; Middle East Technical University
* Department of Civil Engineering, Kocaeli University, 41380, Kocaeli, Turkey (Currently on leave at the Middle East Technical University for graduate study)
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B. Binici;
B. Binici
†
Kocaeli University; Middle East Technical University
† Department of Civil Engineering, Middle East Technical University, 06531, Ankara, Turkey
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* Department of Civil Engineering, Kocaeli University, 41380, Kocaeli, Turkey (Currently on leave at the Middle East Technical University for graduate study)
† Department of Civil Engineering, Middle East Technical University, 06531, Ankara, Turkey
Publisher: Emerald Publishing
Revision Received:
June 14 2009
Received:
July 24 2009
Accepted:
July 24 2009
Online ISSN: 1751-763X
Print ISSN: 0024-9831
© 2010 Thomas Telford Ltd
2010
Magazine of Concrete Research (2010) 62 (7): 465–478.
Article history
Revision Received:
June 14 2009
Received:
July 24 2009
Accepted:
July 24 2009
Citation
Erdogan H, Binici B, Ozcebe G (2010), "Punching shear strengthening of flat-slabs with CFRP dowels". Magazine of Concrete Research, Vol. 62 No. 7 pp. 465–478, doi: https://doi.org/10.1680/macr.2010.62.7.465
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