Experimental Arrangements for Investigation of Soil Stresses Developed Around a Displacement Pile

Jardine, Richard J.; Zhu, Bitang; Foray, Pierre; Dalton, C

doi:10.3208/sandf.49.661

Cited by 29 publications

(17 citation statements)

References 12 publications

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“…NE 34 has the index properties shown in Figure 4 and Table 1 and is broadly comparable to the earlier discussed Dunkerque, HRS and TVS sands. Jardine et al (2009) detail the general experimental arrangements outlined in Figure 22. Cyclic jacking, with full unloading between strokes, was imposed to simulate pile driving installation.…”

Section: Investigating Time-dependent Behaviourmentioning

confidence: 99%

Advanced laboratory testing in research and practice: the 2nd Bishop Lecture

Jardine

2014

Geotechnical Research

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Section: Investigating Time-dependent Behaviourmentioning

confidence: 99%

Advanced laboratory testing in research and practice: the 2nd Bishop Lecture

Jardine

2014

Geotechnical Research

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“…The design and calibration of the stainless steel 36 mm diameter Mini-ICP were described by Jardine et al (2009). Tests Mini-ICP1 and Mini-ICP2 adopted the configuration Each comprises: an axial load cell (ALC), which helps to identify average shaft friction, f s ; an SST that measures local radial total stress (ó r ) and shear stress (ô rz ); a temperature sensor; and MEMS inclinometers.…”

Section: Mini-icpmentioning

confidence: 99%

“…Experiments designed to explore the phenomena and provide benchmarks for analysis are described below, following studies by Nauroy & Le Tirant (1983), Allard (1990), Foray et al (1993), Lehane & Gavin (2001) and Gavin & Lehane (2003). Jardine et al (2009) describe the arrangements for experiments with 36 mm diameter model piles in the 1 . 2 m internal diameter (ID) INPG calibration chamber shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Measurement of stresses around closed-ended displacement piles in sand

Jardine

Zhu²,

Foray³

et al. 2013

Géotechnique

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Jardine, R. J. et al. Géotechnique [http://dx.doi.org/10.1680/geot.9.P.137] 1 Measurement of stresses around closed-ended displacement piles in sand R. J. JAR DINE Ã , B. T. ZHU †, P. FORAY ‡ and Z. X. YANG § Calibration chamber experiments are reported that investigate the evolution of stresses around closedended, highly instrumented, model displacement piles during simulated driving into a heavily instrumented sand mass. The soil stresses are shown to vary spatially relative to the pile tip location. As well as showing considerable radial variation, the stresses developed at any given depth build sharply as the tip approaches, and reduce rapidly as it passes. Clear differences are evident between the behaviours seen close to the shaft during alternate penetration and pause periods. Load-cycling effects are most significant close to the shaft, where the local stress paths indicate a tendency for constrained 'dilatant' behaviour, with radial stresses increasing, during loading. In contrast, markedly 'contractant' radial stress reductions are evident on unloading.

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“…A new programme of research is being performed in calibration chamber experiments conducted at the Laboratoire 3S-R at INPG Grenoble to understand the physical processes more fully by establishing theˆelds of radial, circumferential and vertical stresses developed within the sand mass during all stages of a displacement pile's history. Jardine et al (2009) describe the general approach taken and the development of new mini-ICP instrument systems that are deployed on the test piles, while Foray et al (2009) give more details of the calibration chamber equipment and test arrangements.…”

Section: Introductionmentioning

confidence: 99%