Friction capacity of open-ended piles driven into sand

A new approach for estimating friction capacity of open-ended piles driven into sand is presented in this work. The approach is based on the hypothesis that the unit shaft friction profile along a closed-ended pile can be extrapolated to get the unit shaft friction profile along a similar open-ended...

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Bibliographic Details
Published in:Arabian journal of geosciences 2022-02, Vol.15 (3), Article 314
Main Authors: Sharo, Abdulla A., Alawneh, Ahmed S., Al-Omary, Esraa M.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth pressure
Earth science
Earth Sciences
Friction
Lateral pressure
Original Paper
Parameters
Piles
Sand
Shaft friction
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Summary:A new approach for estimating friction capacity of open-ended piles driven into sand is presented in this work. The approach is based on the hypothesis that the unit shaft friction profile along a closed-ended pile can be extrapolated to get the unit shaft friction profile along a similar open-ended pile by multiplying the former profile by the appropriate correction (reduction) factor. The correction factor was assumed to vary linearly with depth from a minimum value ( M ) at the pile tip to a maximum value of unity at the pile head. The parameter ( M ) was defined as the ratio of the lateral earth pressure coefficient at the tip of the open-ended pile to that at the tip of a similar closed-ended pile. Based on some well documented field cases, the parameter ( M ) is correlated to the vertical effective stress at the pile tip and the incremental filling ratio at final penetration. A good agreement was achieved by comparing predicted and measured shaft capacities of documented field cases collected from literature indicating that the proposed method has sound physical and theoretical meaning.
ISSN:1866-7511
1866-7538
DOI:10.1007/s12517-021-09404-1