Assessment of time effects on capacities of large-scale piles driven in dense sands
File(s)Wen et al. (2023) EURIPIDES paper - repository.pdf (1.24 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
This paper considers the axial resistances of open-ended, highly instrumented, 763 mm diameter steel pipe piles driven in sands for the EURIPIDES (EURopean Initiative on PIles in DEnse Sands) project at a well characterised research site at Eemshaven, in the northern Netherlands. It offers new analyses of previously unreported dynamic tests and considers their relationship to four heavily instrumented static compression tests. Rigorous signal matching employing two distinct pile-soil interaction models is reported, supported by careful sensitivity analyses, to interpret the recorded driving signals. The back-calculated shaft resistance profiles show good agreement between the models as well as calculations performed with a global wave equation analysis approach. The study highlights the need to account for the internal soil column resistance. The combined interpretation of the dynamic and static test data indicates a 50% gain in shaft resistance over the ten days after driving and threefold shaft capacity growth over a total period of 533 days after driving. The outcomes have important implications for driven pile design and field quality monitoring; the case history contributes an important benchmark in the study of long-term set-up trends.
Date Issued
2023-07-01
Date Acceptance
2023-01-12
Citation
Canadian Geotechnical Journal, 2023, 60 (7), pp.1015-1035
ISSN
0008-3674
Publisher
Canadian Science Publishing
Start Page
1015
End Page
1035
Journal / Book Title
Canadian Geotechnical Journal
Volume
60
Issue
7
Copyright Statement
© The Author(s) or their Institution(s).
Identifier
https://cdnsciencepub.com/doi/10.1139/cgj-2022-0060
Publication Status
Published
Date Publish Online
2023-01-12