A Strut-and-Tie Model Approach to Design Precast Column-to-Pile Shaft Member Socket Connections against Prying-Action Failure
Publication: Journal of Bridge Engineering
Volume 29, Issue 5
Abstract
This study presents a seismic design methodology for precast concrete column-to-pile shaft member socket connections. In designing such connections, the intent was to ensure that the plastic hinge occurs in columns while minimizing the damage to the pile shaft. To achieve this, a strut-and-tie model was developed to represent the force transfer mechanism within the connection region; this model served as the basis for efficient seismic design details, including shaft transverse reinforcement, column embedment length, and shaft size. The predictive accuracy of the strut-and-tie model was validated against both the experimental and finite-element analysis results for a wide variety of connection features. Upon validation, the strut-and-tie model was integrated into a step-by-step seismic design procedure and a case study was conducted to demonstrate the effectiveness of these procedures for determining suitable connection design details. Finally, a computer application with a graphical user interface was developed for the ease of implementation of the strut-and-tie model and reliable interpretation of its analysis results, making it possible to be used routinely in seismic design practice for precast column-to-pile shaft assemblies.
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Data Availability Statement
All of the data, models, and codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors gratefully acknowledge the financial support provided by the Natural Sciences and Engineering Research Council of Canada (NSERC)—Discovery Grants Program and McMaster Faculty Start-up Fund. The results, conclusions, and opinions given in this paper are the ones of the authors and do not necessarily reflect the views of the funding agencies and the parties acknowledged.
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Published In
Journal of Bridge Engineering
Volume 29 • Issue 5 • May 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Mar 2, 2023
Accepted: Dec 15, 2023
Published online: Feb 28, 2024
Published in print: May 1, 2024
Discussion open until: Jul 28, 2024
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