Journal ArticleDOI
Driven piles in clay - the effects of installation and subsequent consolidation
Reads0
Chats0
TLDR
In this article, the effects of installing a driven pile on the strength of the soil were investigated using a work-hardening elasto-plastic soil model, which has the unique feature of allowing the strength to change as the water content changes, thus it is possible to calculate the new intrinsic soil strength at any stage during consolidation.Abstract:
This paper describes the results of numerical analysis of the effects of installing a driven pile. The geometry of the problem has been simplified by the assumption of plane strain conditions in addition to axial symmetry. Pile installation has been modelled as the undrained expansion of a cylindrical cavity. The excess pore pressures generated in this process have subsequently been assumed to dissipate by means of outward radial flow of pore water. The consolidation of the soil has been studied using a work-hardening elasto–plastic soil model which has the unique feature of allowing the strength of the soil to change as the water content changes. Thus it is possible to calculate the new intrinsic soil strength at any stage during consolidation. In particular the long-term shaft capacity of a driven pile may be estimated from the final effective stress state and intrinsic strength of the soil adjacent to the pile. A parametric study has been made of the effect of the past consolidation history of the soil...read more
Citations
More filters
Journal ArticleDOI
An elastoplastic solution for spherical cavity undrained expansion in overconsolidated soils
TL;DR: In this paper, a novel elastoplastic solution is developed for the undrained expansion of a spherical cavity in overconsolidated soils, with the aim of providing a mechanical model for the interpretation of cone penetration tests in over-consolidation soils.
Journal ArticleDOI
An effective stress theoretical model for shear resistance and adhesion factor of dynamically installed anchors
TL;DR: In this paper, the authors propose a theoretical effective stress model for estimating the shear resistance and the time-dependent adhesion factor of dynamically installed anchors. But the anchor installation process is not considered.
Book ChapterDOI
5(i) Design and installation of the Magnus foundations: prediction of pile behaviour
W. J. Rigden,R. M. Semple +1 more
Journal ArticleDOI
Analytical solution of stress-strain relationship of modified Cam clay in undrained shear
TL;DR: In this article, the modified Cam clay (MCC) model is used to study the response of virgin compressed clay in undrained compression and the MCC deviatoric stress-strain relationship is obtained in closed form.
Journal ArticleDOI
Development of Analytical Models to Estimate Pile Setup in Cohesive Soils Based on FE Numerical Analyses
TL;DR: In this article, the authors presented the numerical simulation of pile installation and the subsequent increase in the pile capacity over time (or setup) after installation that was performed using the finite element software Abaqus.
References
More filters
On the generalized stress-strain behavior of wet clay
TL;DR: The theory of the three-dimensional stress-strain behavior of WET CLAYs was introduced by BURLAND as discussed by the authors, who showed that WETCLAYs are subject to three dimensions of stress and strain.
Journal ArticleDOI
Skin Friction between Various Soils and Construction Materials
TL;DR: In this article, the authors used several hundred experiments to determine the magnitude of skin friction, in which the following variables were considered: (1) Various construction materials: steel, wood, concrete; (2) For each material two surface conditions were used: smooth and rough; which are described in such a way that they may be reproduced by anyone with a reasonable degree of accuracy.
Journal ArticleDOI
The Sensitivity of Clays
A. W. Skemption,R. D. Northey +1 more
TL;DR: The sensitivity of clays is defined as the ratio of their undisturbed and remoulded strengths, and varies from about 1·O for heavily overconsolidated clays to values of over 100 for the so-called extrasensitive or quick clays.
Journal Article
Bearing capacity and settlement of pile foundations
TL;DR: In this paper, the authors point out further aspects of limit point bearing capacity of piles in sand as well as the overlayered stratum and critical depth, and propose a relationship between the critical depth D sub c and p sub c, or 1 sub 1.