Statnamic testing of model piles in a clay calibration chamber

Michael Brown; William Anderson; Adrian Hyde

doi:10.1680/ijpmg.2004.4.1.11

Statnamic testing of model piles in a clay calibration chamber

Michael Brown
, William Anderson
, Adrian Hyde

Research output: Contribution to journal › Article › peer-review

290 Downloads (Pure)

Abstract

The rate of load application during a Statnamic pile test is beheen that of static and dynamic pile tests. Current analysis methods offer excellent correlation between Statnamic and static test results for coarsened soils. However, over-prediction of pile load capacity can be obtained for fine-grained soils. It is very difficult to explore this anomaly using full scale field tests because of natural soil variability so a study has been carried out using a mode1 pile installed in similar clay beds prepared in a large triaxial calibration chamber. The instrumented model pile has been loaded at varying rates by a computer controlled servo-hydraulic actuator. The tests have simulated static loading, constant rate of penetration at various rates of penetration, and Statnamic loading. Results suggests that components of the rate effect associated with increased pile penetration rates may be described by a power law relationship.

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Original language	English
Pages (from-to)	11-24
Number of pages	14
Journal	International Journal of Physical Modelling in Geotechnics
Volume	4
Issue number	1
DOIs	https://doi.org/10.1680/ijpmg.2004.4.1.11
Publication status	Published - 2004

Keywords

Statnamic load testing
Rate effects
Clays
Pile testing, static, bi-directional, dynamic, rapid

ASJC Scopus subject areas

Civil and Structural Engineering

Access to Document

10.1680/ijpmg.2004.4.1.11

Statnamic phymodj browneta 2004
Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees. http://www.icevirtuallibrary.com/content/journals
Final published version, 286 KB

http://www.icevirtuallibrary.com/content/article/10.1680/ijpmg.2004.4.1.11

Pile capacity testing
Brown, M., Ball, J., Burland, J., Chapman, T., Higgins, K., Skinner, H. & Toll, D., 10 Nov 2023, ICE Manual of Geotechnical Engineering, Second edition, Volume II: Geotechnical design, construction and verification. Brown, M., Burland, J., Chapman, T., Higgins, K., Skinner, H. & Toll, D. (eds.). 2nd ed. UK: Emerald Group Publishing Limited, Vol. 2. p. 1599-1620 22 p.
Research output: Chapter in Book/Report/Conference proceeding › Chapter (peer-reviewed) › peer-review

Open Access
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439 Downloads (Pure)
Statnamic pile testing case studies
Brown, M., Jun 2006, Proceedings-DFI/EFFC of the 10th International Conference on Piling and Deep Foundations. United States: Deep Foundations Institute, p. 627-634 8 p. 1407
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
Statnamic testing in clay soils
Brown, M. J., Hyde, A. F. L. & Anderson, W. F., Aug 2004, Proceedings of the 7th International Conference on the Application of Stress wave Theory to Piles. Malaysia, p. 387-393 7 p.
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Cite this

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title = "Statnamic testing of model piles in a clay calibration chamber",

abstract = "The rate of load application during a Statnamic pile test is beheen that of static and dynamic pile tests. Current analysis methods offer excellent correlation between Statnamic and static test results for coarsened soils. However, over-prediction of pile load capacity can be obtained for fine-grained soils. It is very difficult to explore this anomaly using full scale field tests because of natural soil variability so a study has been carried out using a mode1 pile installed in similar clay beds prepared in a large triaxial calibration chamber. The instrumented model pile has been loaded at varying rates by a computer controlled servo-hydraulic actuator. The tests have simulated static loading, constant rate of penetration at various rates of penetration, and Statnamic loading. Results suggests that components of the rate effect associated with increased pile penetration rates may be described by a power law relationship. Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees. http://www.icevirtuallibrary.com/content/journals",

keywords = "Statnamic load testing, Rate effects, Clays, Pile testing, static, bi-directional, dynamic, rapid",

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AB - The rate of load application during a Statnamic pile test is beheen that of static and dynamic pile tests. Current analysis methods offer excellent correlation between Statnamic and static test results for coarsened soils. However, over-prediction of pile load capacity can be obtained for fine-grained soils. It is very difficult to explore this anomaly using full scale field tests because of natural soil variability so a study has been carried out using a mode1 pile installed in similar clay beds prepared in a large triaxial calibration chamber. The instrumented model pile has been loaded at varying rates by a computer controlled servo-hydraulic actuator. The tests have simulated static loading, constant rate of penetration at various rates of penetration, and Statnamic loading. Results suggests that components of the rate effect associated with increased pile penetration rates may be described by a power law relationship. Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees. http://www.icevirtuallibrary.com/content/journals

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KW - Rate effects

KW - Clays

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DO - 10.1680/ijpmg.2004.4.1.11

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Statnamic testing of model piles in a clay calibration chamber

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Research output

Pile capacity testing

Statnamic pile testing case studies

Statnamic testing in clay soils

Cite this