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Investigation on punching shear behaviour of multi-panel flat slab

Investigation on punching shear behaviour of multi-panel flat slab Reinforced concrete multi-panel flat slabs subjected to punching shear are investigated in this study on the basis of finite element analysis. The study involves development of a non-linear material model strategy based on past experimental investigations which implements solution for a realistic description of punching shear of RC slabs for several types of concrete strength and reinforcement ratio. It has been observed that the unit punching shear strength of multi-panel slabs decreases with increase of compressive strength of concrete. On the other hand, flexural reinforcement ratio contributes to increase the punching capacity. A proposal for calculating punching shear capacity of flat slab is incorporated in this paper based on the findings of investigation. The proposal includes the effect of flexural reinforcement in addition to concrete strength in estimating the punching capacity. The punching shear capacity estimated using the proposed expression is compared with the results of non-linear finite element analysis and some code equations and has been found to be in good agreement. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Structural Engineering Inderscience Publishers

Investigation on punching shear behaviour of multi-panel flat slab

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Publisher
Inderscience Publishers
Copyright
Copyright © Inderscience Enterprises Ltd. All rights reserved
ISSN
1758-7328
eISSN
1758-7336
DOI
10.1504/IJSTRUCTE.2014.063014
Publisher site
See Article on Publisher Site

Abstract

Reinforced concrete multi-panel flat slabs subjected to punching shear are investigated in this study on the basis of finite element analysis. The study involves development of a non-linear material model strategy based on past experimental investigations which implements solution for a realistic description of punching shear of RC slabs for several types of concrete strength and reinforcement ratio. It has been observed that the unit punching shear strength of multi-panel slabs decreases with increase of compressive strength of concrete. On the other hand, flexural reinforcement ratio contributes to increase the punching capacity. A proposal for calculating punching shear capacity of flat slab is incorporated in this paper based on the findings of investigation. The proposal includes the effect of flexural reinforcement in addition to concrete strength in estimating the punching capacity. The punching shear capacity estimated using the proposed expression is compared with the results of non-linear finite element analysis and some code equations and has been found to be in good agreement.

Journal

International Journal of Structural EngineeringInderscience Publishers

Published: Jan 1, 2014

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