Influence of Strength Anisotropy on Piezocone Resistance in Clay
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 128, Issue 2
Abstract
Since different undrained shear strengths may be obtained from different laboratory or field tests, different cone factors are needed to calculate the undrained shear strengths from the results of a piezocone test in clay. Based on the anisotropic undrained shear strength criterion, a set of cone factors for calculating undrained shear strength is proposed in this paper. These cone factors are interrelated with each other in terms of the strength anisotropy ratio of the clay. The suitability of the proposed cone factors has been verified using the test results generated from different tests and from clays with different origins. By comparing with the cone factor for isotropic clay, it was found that the effect of strength anisotropy on the cone factor is not always significant. In fact, the effect of strength anisotropy becomes significant only in lightly overconsolidated to normally consolidated clay with moderate to high strength anisotropy. Furthermore, the maximum difference in cone factor is not expected to exceed 20% with or without taking into account the strength anisotropy of clay.
Get full access to this article
View all available purchase options and get full access to this article.
References
Aas, G., Lacasse, S., Lunne, T., and Hoeg, K. (1986). “Use of in-situ tests for foundation design on clay.” Proc., In-Situ ’86, Geotechnical Engineering Division, ASCE, New York, 1–30.
Baligh, M. M. (1984). “The simple-pile approach to pile installation in clay.” Proc., Symposium on Analysis and Design of Pile Foundation, Geotechnical Division, ASCE, New York, 310–330.
Campanella, R. G., Robertson, P. K., and Gillespie, D.(1983). “Cone penetration testing in deltaic soils.” Can. Geotech. J., 20(1), 23–35.
Durban, D., and Fleck, N. A.(1992). “Singular plastic fields in steady penetration of a rigid cone.” J. Appl. Mech., 59, 706–710.
Hight, D. W., Bond, A. J., and Legge, J. D.(1992). “Characterization of the Bothkennar clay: an overview.” Geotechnique, 42(2), 303–347.
Houlsby, G. T., and Withers, N. J.(1988). “Analysis of the cone pressuremeter test in clay.” Geotechnique, 38(4), 575–587.
Keaveny, J. M., and Mitchell, J. K. (1986). “Strength of fine grained soils using the piezocone.” Proc., In-Situ ’86, Geotechnical Engineering Division, ASCE, New York, 668–685.
Ladd, C. C., Foott, R., Ishihara, K., Schlosser, F., and Poulos, H. G. (1977). “Stress-deformation and strength characteristics.” State-of-the-Art Report, Proc., 9th ICSMFE, Vol. 2, 421–494.
Lunne, T., Robertson, P. K., and Powell, J. J. M. (1997). Cone penetration testing in geotechnical practice, Blackie Academic & Professional, London.
Meigh, A. C. (1987). “Cone penetration testing.” CIRIA Report, Butterworth’s, London.
Mesri, G.(1989). “A reevaluation of using laboratory shear tests.” Can. Geotech. J., 26(1), 162–164.
Nash, D. F. T., Powell, J. J. M., and Lloyd, I. M.(1992). “Initial investigations of the soft clay test site at Bothkennar.” Geotechnique, 42(2), 163–181.
Prevost, J. H.(1979). “Undrained shear tests on clay.” J. Geotech. Eng. Div., Am. Soc. Civ. Eng., 105(1), 49–64.
Roscoe, K. H. (1953). “An apparatus for the application of simple shear to soil samples.” Proc., 3rd ICSMFE, 186–191.
Sagaseta, C., and Houlsby, G. T. (1992). “Stresses near the shoulder of acone penetrometer in clay.” Proc., 3rd Int. Conf. on Computational Plasticity: Fundamentals and Applications, 895–906.
Su, S. F., Liao, H. J., and Lin, Y. H.(1998). “Base stability of deep excavation in anisotropic soft clay.” J. Geotech. Geoenviron. Eng., 124(9), 809–819.
Teh, C. I., and Houlsby, G. T.(1991). “An analytical study of the cone penetration test in clay.” Geotechnique, 41(1), 17–34.
Yu, H. S.(1993). “Discussion of ‘Singular plastic fields in steady penetration of a rigid cone,’ by D. Durban and N. A. Fleck.” J. Appl. Mech., 60, 1061–1062.
Yu, H. S., and Mitchell, J. K.(1998). “Analysis of cone resistance: Review of methods.” J. Geotech. Geoenviron. Eng., 124(2), 140.
Information & Authors
Information
Published In
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Jul 6, 2000
Accepted: Jun 21, 2001
Published online: Feb 1, 2002
Published in print: Feb 2002
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.