A Novel Model for Shear Strength Prediction of a Steel–UHPC Composite Structure Considering Interface Friction
Publication: Journal of Structural Engineering
Volume 150, Issue 8
Abstract
Existing studies have shown that the interface friction force positively affects and improves the shear behavior at the stud-connected steel–ultrahigh performance concrete (UHPC) interface. However, the effects of the interface friction force have not been well understood and quantified yet. The present study proposes a novel model to quantify the interface friction force and count it in the shear strength prediction for stud-connected steel–UHPC interfaces based on the compression-dispersion model and elastic foundation beam theory. The proposed formula is simple but with clear physical meaning, which has been verified with high accuracy. The proposed model can also be used to identify the yielding state of concrete in front of the stud and predict the interface friction during the whole static loading process, which improves the accuracy of shear strength prediction for steel–UHPC interfaces and reveals the influence of different parameters. For the steel–UHPC interface with UHPC strength greater than 120 MPa, the UHPC in front of stud is hard to yield and the percentage of friction force remains almost constant at 10%–14% during the whole static loading process. The positive effects of friction force on the shear strength of the steel–concrete interface is negligible for the cases with concrete strength less than 60 MPa.
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Data Availability Statement
All data generated or analyzed during this study are included in this article.
Acknowledgments
This work reported here was conducted with the financial supports from the Education Department Research Foundation of Hunan Province (Grant No. 21B0170) and the Natural Science Foundation of Hunan Province of China (Grant No. 2021JJ40540). The supports are gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 150 • Issue 8 • August 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Sep 1, 2023
Accepted: Feb 28, 2024
Published online: Jun 13, 2024
Published in print: Aug 1, 2024
Discussion open until: Nov 13, 2024
ASCE Technical Topics:
- Concrete
- Construction engineering
- Construction methods
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering materials (by type)
- Engineering mechanics
- Fastening
- Forces (type)
- Friction
- High-performance concrete
- Material mechanics
- Material properties
- Materials engineering
- Shear forces
- Shear strength
- Solid mechanics
- Strength of materials
- Studs
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