Journal ArticleDOI
Driven piles in clay - the effects of installation and subsequent consolidation
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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
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Journal ArticleDOI
Field tests on bearing characteristics of DPC pipe piles including effects of end sealing and side grouting
Journal ArticleDOI
A graphical solution for undrained cylindrical cavity expansion in strain-hardening frictional soil
Xu Wang,Shengting Chen,Jon Zhang +2 more
Increasing Pile Capacity and Set-up in Clay by Electrokinetics
TL;DR: In this paper, an empirical equation incorporating the effect of an applied electric gradient was proposed to predict pile set-up in clay, and the proposed equation was in good agreement with the experimental data.
Perubahan kekuatan geser tanah lempung jenuh akibat pemancangan
TL;DR: Pengaruh waktu terhadap kekuatan geser tanah juga diteliti. as mentioned in this paper, disimpulkan bahwa setelah pemancangan model tiang diameter 5 cm and 7,5 cm, tanah ying berada pada area di antara dinding tiang hingga radius 2D (2 kali diameter tiang).
References
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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.
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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.
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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.