<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Flat slabs represent a structural system with a typical concentration of shear forces near the vicinity of its local supports. A possible failure from punching is a dangerous phenomenon due to the brittleness and possible progressive collapse of a whole structure. An improvement in the structural behaviour of a slab-column connection provides transverse reinforcement. The amount of this reinforcement and thus its contribution to the resistance against punching has a limit, which is represented by the maximum punching capacity. This capacity can be assessed using the kmax factor or by direct verification of the strut capacity. The article deals with the results of a test campaign carried out on flat slab specimens with their transverse reinforcements designed in such a way that the crushing of the struts is the governing mode of any failure. The test results obtained allowed for an evaluation of the kmax factors and provide an answer as to whether it is possible to cover failures due to the crushing of struts by this factor.</p></abstract>

Flat slabs represent a structural system with a typical concentration of shear forces near the vicinity of its local supports. A possible failure from punching is a dangerous phenomenon due to the brittleness and possible progressive collapse of a whole structure. An improvement in the structural behaviour of a slab-column connection provides transverse reinforcement. The amount of this reinforcement and thus its contribution to the resistance against punching has a limit, which is represented by the maximum punching capacity. This capacity can be assessed using the kmax factor or by direct verification of the strut capacity. The article deals with the results of a test campaign carried out on flat slab specimens with their transverse reinforcements designed in such a way that the crushing of the struts is the governing mode of any failure. The test results obtained allowed for an evaluation of the kmax factors and provide an answer as to whether it is possible to cover failures due to the crushing of struts by this factor.

Experimental Investigation of the Maximum Punching Resistance of Slab-Column Connections

Faculty of Civil Engineering, Dept. of Concrete Structures and Bridges

Slovak Journal of Civil Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Flat slabs represent a structural system with a typical concentration of shear forces near the vicinity of its local supports. A possible failure from punching...

Experimental Investigation of the Maximum Punching Resistance of Slab-Column Connections

Published Online: Oct 04, 2018

Page range: 22 - 28

DOI: https://doi.org/10.2478/sjce-2018-0017

Keywords
Punching, Flat slab, Shear resistance, Concrete strut, Shear crack

© 2018 Jaroslav Halvoník et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Experimental Investigation of the Maximum Punching Resistance of Slab-Column Connections

Published Online: Oct 04, 2018

Page range: 22 - 28

DOI: https://doi.org/10.2478/sjce-2018-0017

KeywordsPunching, Flat slab, Shear resistance, Concrete strut, Shear crack

© 2018 Jaroslav Halvoník et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Punching, Flat slab, Shear resistance, Concrete strut, Shear crack