Impact of Column Rectangularity on Punching Shear Strength: Code Predictions versus Finite Element Analysis
Publication: Journal of Structural Engineering
Volume 147, Issue 2
Abstract
In this paper, the punching shear behavior of interior slab-rectangular column connections without shear reinforcement under static concentric loading is studied using a three-dimensional, nonlinear, finite element model (FEM) in ABAQUS version 6.12 based on the concrete damaged plasticity model. The FEM was calibrated based on seven experimental tests selected from literature. The predicted shear capacities were compared to punching and one-way shear predictions according to published standards and the critical shear crack theory (CSCT). The finite element analysis results show that the impact of column rectangularity on punching shear capacity is not only dependent on the column aspect ratio but becomes more severe as the ratio of the minimum column dimension to the effective depth of the slab increases. This behavior was found to be implicitly accounted for in some published European standards and the CSCT.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors would like to thank the Natural Sciences and Engineering Research Council (NSERC) of Canada for funding this research through an Engage Grant with Blackwell Structural Engineers. The authors would also like to acknowledge the funding provided by the Ontario Government and the University of Waterloo through a Queen Elizabeth II Graduate Scholarship in Science and Technology (QEII-GSST).
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Published In
Journal of Structural Engineering
Volume 147 • Issue 2 • February 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Nov 14, 2019
Accepted: Aug 23, 2020
Published online: Nov 30, 2020
Published in print: Feb 1, 2021
Discussion open until: Apr 30, 2021
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