Eighth International Conference on Case Histories in Geotechnical Engineering
Inferring Drainage Conditions during In Situ Cone Penetration
Publication: Geo-Congress 2019: Engineering Geology, Site Characterization, and Geophysics (GSP 311)
ABSTRACT
Different data reduction formulas are used with drained, partially drained, and undrained piezocone test (CPTu) data. In practice, drainage conditions are inferred based on a characterized soil behavior type (SBT) from the CPTu profile. Alternatively, drainage conditions around the cone probe can be confirmed from CPTu pore-pressure dissipation (PPD) tests. This alternative is time-consuming and only provides confirmation of the drainage conditions at a discrete point in the profile. This paper reports on the relationship between SBT indices and drainage conditions over a dataset of 2792 PPD tests. We evaluated the predictive capabilities of the SBT indices to infer undrained behavior using a receiver-operator characteristic (ROC) curve. The area under the ROC curve was 75–76%, in-between a perfect metric (100%) and an uninformative metric (50%).
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REFERENCES
Burns, S.E. and Mayne, P.W. (2002). “Analytical cavity expansion-critical state model for piezocone dissipation in fine-grained soils.” Soils and Foundations, 42(2):131-137.
Campanella, R.G., Gillespie, D., and Robertson, P.K. (1982). “Pore pressure during cone penetration testing.” 2nd Euro. Symp. on Penetration Testing, Amsterdam, Netherlands.
DeJong, J.T. and Randolph, M.F. (2012). “Influence of partial consolidation during cone penetration on estimated soil behavior type and pore pressure dissipation measurements,” J. Geotech. Geoenviron. Eng. 138(7):777-788.
Finnie, I.M.S. and Randolph, M.F. (1994). “Punch-through and liquefaction induced failure of shallow foundations on calcareous sediments,” Proc. Int. Conf. on Behavior of Offshore Structures (BOSS)’94, Elsevier Science, Tarrytown, NY, p. 217-230.
Hight, D.W., and Leroueil, S. (2003). “Characterisation of soils for engineering purposes.” Characterisation and Engineering Properties of Natural Soils, Ed. Tan et al., Swets & Zeitlinger, Lisse.
Kulhawy, F.H. and Mayne, P.W. (1990). “Manual on estimating soil properties for foundation design.” EPRI, Report No. El-6800, Palo Alto, CA, 306 p.
Lunne, T., Robertson, P.K., and Powell, J.J.M. (1997). “Cone penetration testing in geotechnical practice.” Blackie Academic and Professional Publishing.
Mayne, P.W. (2007). “NCHRP Synthesis 368 on Cone Penetration Testing.” Transportation Research Board, National Academies Press, Washington, D.C., 118 p.
Randolph, M.F. (2004). “Characterisation of soft sediments for offshore applications,” Proc. Int. Conf. Geotechnical Site Characterization, ISC-2, Millpress, The Netherlands, p. 209-232.
Robertson, P.K. and Campanella, R.G. (1983a). “Interpretation of Cone Penetration Tests. Part 1: Sand.” Canadian Geotechnical Journal, 20, 718-733.
Robertson, P.K. and Campanella, R.G. (1983b). “Interpretation of Cone Penetration Tests. Part 2: Clay.” Canadian Geotechnical Journal, 20, 734-745.
Robertson, P.K., Campanella, D.G., Gillespie, D., and Greig, J. (1986). “Use of piezometer cone data.” Proceedings of InSitu 86, ASCE Specialty Conference, Blacksburg, Virginia.
Robertson, P.K. (1990). “Soil classification using the cone penetration test.” Can. Geotech. J., 27:151-158.
Robertson, P.K. (1991). “Soil classification using the cone penetration test: Reply.” Can. Geotech. J., 28:176-178.
Robertson, P.K. and Wride, C.E. (1998). “Evaluating cyclic liquefaction potential using the cone penetration test.” Can. Geotech. J., 35:442-459.
Robertson, P.K. (2009). “Interpretation of cone penetration tests – a unified approach.” Canadian Geotechnical Journal, 46:1337-1355.
Robertson, P.K. (2016). “Cone penetration test (CPT)-based soil behavior type (SBT) classification system – an update.” Can. Geotech. J., 53:1910-1927.
Schneider, J.A., Randolph, M.F., Mayne, P.W., and Ramsey, N.R. (2008). “Analysis of factors influencing soil classification using normalized piezocone tip resistance and pore pressure parameters.” J. Geotech. Geoenviron. Eng. 134(11):15696-1586.
Schneider, J.A., Hotstream, J.N., Mayne, P.W., and Randolph, M.F. (2012). “Comparing CPTU Q-F and Q-Δu2/σ’v0soil classification charts.” Geotechnique Letters, 2:209-215.
Teh, C.I. and Houlsby, G.T. (1989). “An analytical study of the cone penetration test in clay.” University of Oxford, Department of Engineering Science, Report No. OUEL 1800/90.
Information & Authors
Information
Published In
Geo-Congress 2019: Engineering Geology, Site Characterization, and Geophysics (GSP 311)
Pages: 62 - 70
Editors: Christopher L. Meehan, Ph.D., University of Delaware, Sanjeev Kumar, Ph.D., Southern Illinois University Carbondale, Miguel A. Pando, Ph.D., University of North Carolina Charlotte, and Joseph T. Coe, Ph.D., Temple University
ISBN (Online): 978-0-7844-8213-1
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Mar 21, 2019
ASCE Technical Topics:
- Curvature
- Drainage
- Engineering fundamentals
- Field tests
- Geomechanics
- Geometry
- Geotechnical data
- Geotechnical engineering
- Geotechnical investigation
- Irrigation engineering
- Mathematics
- Measurement (by type)
- Metric systems
- Penetration tests
- Soil classification
- Soil mechanics
- Soil properties
- Tests (by type)
- Water and water resources
Authors
Metrics & Citations
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