Experimental studies on the punching shear strength of thick reinforced concrete slabs
https://doi.org/10.33979/2073-7416-2025-121-5-3-26
Abstract
This paper presents the results of experimental studies on the punching shear strength of thick reinforced concrete slabs (600 mm) without shear reinforcement. The influence of the tensile reinforcement ratio (μs = 0,56% and 1,12%) on the load-bearing capacity and failure mode was investigated. It was found that a two-fold increase in the reinforcement ratio leads to an increase in punching shear strength of only 10,8%, indicating a reduced influence of this factor for "thick" slabs compared to "thin" ones. The complex stress-strain state of concrete in the support zone and the stress distribution in the reinforcement were analyzed. A comparative analysis of the experimental data with calculations based on regulatory documents (SP 63.13330, EC2, ACI 318, MC2020) was carried out, which showed a significant overestimation of the load-bearing capacity according to the SP 63.13330 methodology, especially for slabs with a low reinforcement ratio. It is concluded that it is necessary to account for the longitudinal reinforcement in the design models.
About the Authors
O. V. Kabantsev
Federal State Budget Educational Institution of Higher Education «Moscow State University of Civil Engineering»
Russian Federation
Russian Federation
Kabantsev Oleg V., Dr. Sci. (Engineering), Director of Scientific and Technical Projects, Professor of the Department of Reinforced Concrete and Stone Structures
Moscow
S. B. Krylov
Research Institute of Concrete and Reinforced Concrete (NIIZHB) named after A.A. Gvozdev JSC Research Center "Construction"
Russian Federation
Russian Federation
Krylov Sergey B., Dr. Sci. (Engineering), Academician of the RAACS, Head of the Laboratory of Reinforced Concrete Mechanics
Moscow
S. V. Trofimov
National Research Moscow State University of Civil Engineering (NRU MGSU); A.A. Gvozdev Research, Design and Technological Institute of Concrete and Reinforced Concrete, JSC Research Center "Construction"
Russian Federation
Russian Federation
Trofimov Sergey V., Postgraduate Student of the Department of Reinforced Concrete and Stone Structures; Researcher at the Laboratory of Reinforced Concrete Mechanics
Moscow
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Review
For citations:
Kabantsev O.V., Krylov S.B., Trofimov S.V. Experimental studies on the punching shear strength of thick reinforced concrete slabs. Building and Reconstruction. 2025;(5):3-26. (In Russ.) https://doi.org/10.33979/2073-7416-2025-121-5-3-26
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