The design of diaphragm-type boundary total stress cells

Clayton, C.R.I.; Bica, A. V. D.

doi:10.1680/geot.1995.45.2.349

Cited by 12 publications

(19 citation statements)

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“…In principle, stress paths may be determined either by measurement or analysis. Although direct measurements of stress from field and laboratory measurements have been reported (Yoo & Selig, 1979;Jain & Keshav, 1999;Shahu et al, 1999), the validity of such measurements is dependent on the adoption of installation procedures appropriate to the characteristics of the individual site (Weiler & Kulhawy, 1982;Richards et al, 2007), and the relative stress cell/soil stiffness ratio (Peattie & Sparrow, 1954;Clayton & Bica, 1993). In general, the use of devices for the direct measurement of in-ground stresses below an in-service railway is not practicable.…”

Section: Introductionmentioning

confidence: 99%

Measurements of transient ground movements below a ballasted railway line

Priest¹,

Powrie²,

Le³

et al. 2010

Géotechnique

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This paper presents the results of a detailed investigation into the ground deformations that occur under a railway line during the passage of a train. Four horizontal boreholes were installed at different depths below a ballasted railway track. Ground deformations were measured using geophones at set distances from the centreline of the track within each borehole. The results show vertical displacements reducing with depth, from a maximum at the sleeper. Sleeper displacements are dominated by pairs of bogies at the ends of adjacent wagons (which have a frequency of loading 1 Hz), although the effects of individual bogies (2 Hz) and axles (6 Hz) are also apparent. Higher loading frequencies attenuate with depth so that at a depth of 0 . 780 m below the sleeper soffit no axles are visible within the displacement data and by a depth of 1 . 98 m only the combined effect of pairs of adjacent bogies is apparent. In contrast, longitudinal horizontal motion is greatest at a depth of 0 . 78 m below the sleeper soffit, and the longitudinal horizontal displacements at the sleeper and at a depth of 0 . 78 m are dominated by the individual axles (,6 Hz). By a depth of 1 . 98 m, the longitudinal horizontal motion is dominated by the bogie pairs. A dynamic linear-elastic two-dimensional finite element model was developed and validated using the measured displacements.

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Section: Introductionmentioning

confidence: 99%

Measurements of transient ground movements below a ballasted railway line

Priest¹,

Powrie²,

Le³

et al. 2010

Géotechnique

View full text Add to dashboard Cite

show abstract

“…Consideration has to be given to both the stress perturbations caused by cell installation and the subsequent`cell action'. The latter is a consequence of diŠerences between the eŠective stiŠnesses of the stress cell and the soil mass; Bond et al (1991), Clayton and Bica (1993). If not accounted for, cell action can seriously aŠect the reliability and accuracy of the soil-stress measurements.…”

Section: Introductionmentioning

confidence: 99%

The Use of Miniature Soil Stress Measuring Cells in Laboratory Applications Involving Stress Reversals

Zhu

Jardine

Foray

2009

Soils and Foundations

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“…The existence of the cells will change the stress distribution in the soil due to the stiffness difference between the cell and soil. Lots of experiments showed that the soil pressure cell often gave incorrect results for the soil stress measurement (Clayton and Bica, 1993) without careful calibration. The pressure cells adopted in this test have the stiffness around 90 MPa, which is much different from the compacted sand.…”

Section: Sand Backfillmentioning

confidence: 99%