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Effects of sampler design on tube sampling disturbance - numerical and analytical investigation

Effects of sampler design on tube sampling disturbance - numerical and analytical investigation
Effects of sampler design on tube sampling disturbance - numerical and analytical investigation
The detailed features of the design of a sampling tube, such as area ratio, inside clearance, cutting edge taper angle, etc., have an important influence on the disturbance caused when a tube sampler is pushed into cohesive soil. Currently, most tube sampler designs have evolved on the basis of empirical design rules, and local good practices, developed for particular soil conditions.

The strain path method provides a basis upon which the influence and importance of different features of tube sampler design can be evaluated, and the design of future samplers optimized. This paper examines the use of Baligh's strain path method for the assessment of tube sampling disturbance, and implements the method via a finite-element approach to assess the influence of area ratio, cutting-edge angles and inside clearance, on sample disturbance evaluated on the basis of the strains imposed on the centre-line of a soil sample.The detailed features of the design of a sampling tube, such as area ratio, inside clearance, cutting edge taper angle, etc., have an important influence on the disturbance caused when a tube sampler is pushed into cohesive soil. Currently, most tube sampler designs have evolved on the basis of empirical design rules, and local good practices, developed for particular soil conditions. The strain path method provides a basis upon which the influence and importance of different features of tube sampler design can be evaluated, and the design of future samplers optimized. This paper examines the use of Baligh's strain path method for the assessment of tube sampling disturbance, and implements the method via a finite-element approach to assess the influence of area ratio, cutting-edge angles and inside clearance, on sample disturbance evaluated on the basis of the strains imposed on the centre-line of a soil sample.
sampling, site investigation
0016-8505
847-867
Clayton, C.R.I.
8397d691-b35b-4d3f-a6d8-40678f233869
Siddique, A.
e0e45f72-cb50-48e9-8fd7-02e2f6ca8cc9
Hopper, R.J.
411cb9bc-e134-4e77-bbd5-5c74f2424ea8
Clayton, C.R.I.
8397d691-b35b-4d3f-a6d8-40678f233869
Siddique, A.
e0e45f72-cb50-48e9-8fd7-02e2f6ca8cc9
Hopper, R.J.
411cb9bc-e134-4e77-bbd5-5c74f2424ea8

Clayton, C.R.I., Siddique, A. and Hopper, R.J. (1998) Effects of sampler design on tube sampling disturbance - numerical and analytical investigation. Geotechnique, 48 (6), 847-867. (doi:10.1680/geot.1998.48.6.847).

Record type: Article

Abstract

The detailed features of the design of a sampling tube, such as area ratio, inside clearance, cutting edge taper angle, etc., have an important influence on the disturbance caused when a tube sampler is pushed into cohesive soil. Currently, most tube sampler designs have evolved on the basis of empirical design rules, and local good practices, developed for particular soil conditions.

The strain path method provides a basis upon which the influence and importance of different features of tube sampler design can be evaluated, and the design of future samplers optimized. This paper examines the use of Baligh's strain path method for the assessment of tube sampling disturbance, and implements the method via a finite-element approach to assess the influence of area ratio, cutting-edge angles and inside clearance, on sample disturbance evaluated on the basis of the strains imposed on the centre-line of a soil sample.The detailed features of the design of a sampling tube, such as area ratio, inside clearance, cutting edge taper angle, etc., have an important influence on the disturbance caused when a tube sampler is pushed into cohesive soil. Currently, most tube sampler designs have evolved on the basis of empirical design rules, and local good practices, developed for particular soil conditions. The strain path method provides a basis upon which the influence and importance of different features of tube sampler design can be evaluated, and the design of future samplers optimized. This paper examines the use of Baligh's strain path method for the assessment of tube sampling disturbance, and implements the method via a finite-element approach to assess the influence of area ratio, cutting-edge angles and inside clearance, on sample disturbance evaluated on the basis of the strains imposed on the centre-line of a soil sample.

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More information

Published date: 1998
Keywords: sampling, site investigation
Organisations: Civil Engineering & the Environment

Identifiers

Local EPrints ID: 74555
URI: https://eprints.soton.ac.uk/id/eprint/74555
ISSN: 0016-8505
PURE UUID: 7814a786-a94a-414d-b771-a82d70b922d2

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:45

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