Improved Relationships for the Pile Base Response in Sandy Soils
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 149, Issue 8
Abstract
Design codes vary in their recommendations for the end-bearing response for bored piles founded in sand, both for the ultimate design value and the response at small settlements. The ultimate end-bearing resistance may be expressed either in terms of bearing factors relative to the in situ vertical effective stress, with the value varying with the friction angle of the sand, or as a factor applied to in situ test data, such as the standard penetration test blow count or the tip resistance . Numerical studies have led to proposed ratios of design end-bearing pressure to at specific settlement ratios, such as 5% and 10% of the pile diameter. The work presented here used numerical analysis to evaluate the full pile base response from initial stiffness to ultimate end-bearing resistance at a settlement ratio of 10% of the pile diameter. The resulting base responses are suitable for implementation in beam column analyses and have been validated by comparison with published design guidelines and with data from a full-scale instrumented pile load test.
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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 are grateful to the reviewers and the Associated Editor for the valuable comments and constructive feedback that improved this work.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 149 • Issue 8 • August 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: May 13, 2022
Accepted: Mar 21, 2023
Published online: May 26, 2023
Published in print: Aug 1, 2023
Discussion open until: Oct 26, 2023
ASCE Technical Topics:
- Bored piles
- Design (by type)
- Engineering fundamentals
- Field tests
- Foundations
- Geomechanics
- Geotechnical engineering
- Geotechnical investigation
- Load and resistance factor design
- Load factors
- Penetration tests
- Pile foundations
- Pile settlement
- Piles
- Sandy soils
- Soil dynamics
- Soil mechanics
- Soil settlement
- Soils (by type)
- Structural design
- Tests (by type)
Authors
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