Experimental study on strengthening punching shear in concrete flat plates by steel collars

Six square reinforced concrete flat plates with dimensions of (1500×1500×100) mm were tested under a concentrated load applied on a column located at center of slab. One of the specimens as a reference model without strengthening. Five of specimens were strengthened using steel angles (steel collars...

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Bibliographic Details
Main Authors: Abdulhussein, Ahmed Aziz, Al-Sherrawi, Mohannad H.
Format: Conference Proceeding
Language:English
Subjects:
Collars
Concentrated loads
Flat plates
Punching shear
Reinforced concrete
Reinforcing steels
Shear strength
Strengthening
Thickness
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Summary:Six square reinforced concrete flat plates with dimensions of (1500×1500×100) mm were tested under a concentrated load applied on a column located at center of slab. One of the specimens as a reference model without strengthening. Five of specimens were strengthened using steel angles (steel collars) that fixed at the slab-column connection region with different thickness (4, 5, 6, 8, 10) mm and equal legs (75×75) mm to investigate the effects of steel collars on the punching shear resistance with respect to the control slab and the effectiveness of changing thickness of steel collars on punching shear capacity. The results of experimental study showed that the punching shear resistance increased when using steel collars with respect to control slab between (41 to 77) % when the thickness of steel collar had increased.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0130802