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Pile and penetrometer end bearing resistance in two-layered soil profiles.
- Source :
-
Géotechnique . Apr2008, Vol. 58 Issue 3, p187-197. 11p. 4 Diagrams, 3 Charts, 9 Graphs. - Publication Year :
- 2008
-
Abstract
- The paper examines the influence of soil strength and stiffness on the end resistance mobilised by a cone or displacement pile in a two-layered soil profile (i.e. strong soil overlying or underlying weak soil). The investigation involved a series of numerical analyses that idealise pile/ cone penetration assuming the spherical cavity expansion analogue. It is shown how the end resistance mobilised by a penetrometer in a dense sand (i.e. strong soil) varies with the number of penetrometer diameters (D) from a weak soil (assumed here to be either a loose sand or soft clay), and depends on the ratio of the steady-state penetration resistances of the strong and weak layers. The penetrometer resistance in the weak soil is not affected by an adjacent strong layer at penetrations greater than 2D. A design procedure based on a numerical parametric study is proposed, and this is subsequently shown to compare well with centrifuge test data and with previous numerical research. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00168505
- Volume :
- 58
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Géotechnique
- Publication Type :
- Academic Journal
- Accession number :
- 32777946
- Full Text :
- https://doi.org/10.1680/geot.2008.58.3.187