A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Tangential Strain Theory for Punching Failure of Flat Slabs
A novel mechanical model for the punching failure at interior columns of flat slabs without shear reinforcement is presented. It is based on fundamental structural mechanics and the stress-strain relation of compressed concrete. The shear force is assumed to be transferred to the column by an inclined circumferential compression strut that squeezes the concrete within the column perimeter, and when the compression stress in this area approaches the yield level, an increasing part of the squeezing pressure is anchored back to the surrounding concrete. Ultimately, the compression zone outside the column is assumed to collapse due to the generation of radial tension strain. Validation against test results in the literature demonstrates that the proposed model can accurately predict the punching capacity and the concurrent ultimate slab rotation. Both concentric and eccentric punching can therefore be analyzed.
Tangential Strain Theory for Punching Failure of Flat Slabs
A novel mechanical model for the punching failure at interior columns of flat slabs without shear reinforcement is presented. It is based on fundamental structural mechanics and the stress-strain relation of compressed concrete. The shear force is assumed to be transferred to the column by an inclined circumferential compression strut that squeezes the concrete within the column perimeter, and when the compression stress in this area approaches the yield level, an increasing part of the squeezing pressure is anchored back to the surrounding concrete. Ultimately, the compression zone outside the column is assumed to collapse due to the generation of radial tension strain. Validation against test results in the literature demonstrates that the proposed model can accurately predict the punching capacity and the concurrent ultimate slab rotation. Both concentric and eccentric punching can therefore be analyzed.
Tangential Strain Theory for Punching Failure of Flat Slabs
Carl Erik Broms (author)
ACI structural journal ; 113
2016
Article (Journal)
English
Theory of punching in concrete flat slabs
| TIBKAT | 1985
Punching Resistance of Flat Slabs
| Trans Tech Publications | 2016
Reinforced High Strength Concrete in Punching Failure of Flat Slabs
| British Library Conference Proceedings | 1995
Design for Punching of Flat Slabs
| Springer Verlag | 2013
Post-Punching Behavior of Flat Slabs
| Online Contents | 2013