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Soil deformation measurement using particle image velocimetry (PIV) and photogrammetry

Soil deformation measurement using particle image velocimetry (PIV) and photogrammetry
Soil deformation measurement using particle image velocimetry (PIV) and photogrammetry

A deformation measurement system based on particle image velocimetry (PIV) and close-range photogrammetry has been developed for use in geotechnical testing. In this paper, the theory underlying this system is described, and the performance is validated. Digital photography is used to capture images of planar soil deformation. Using PIV, the movement of a fine mesh of soil patches is measured to a high precision. Since PIV operates on the image texture, intrusive target markers need not be installed in the observed soil. The resulting displacement vectors are converted from image space to object space using a photogrammetric transformation. A series of validation experiments are reported. These demonstrate that the precision, accuracy and resolution of the system are an order of magnitude higher than previous image-based deformation methods, and are comparable to local instrumentation used in element testing. This performance is achieved concurrent with an order of magnitude increase in the number of measurement points that can be fitted in an image. The performance of the system is illustrated with two example applications.

Centrifuge modelling, Deformation, Ground movements, Laboratory equipment, Laboratory tests, Model tests
0016-8505
619-631
White, D.J.
a986033d-d26d-4419-a3f3-20dc54efce93
Take, W.A.
17ad03bb-864a-49eb-991a-dd21ffe0cf85
Bolton, M.D.
9fbf6ba8-1095-4220-a7f6-38f5463a58e7
White, D.J.
a986033d-d26d-4419-a3f3-20dc54efce93
Take, W.A.
17ad03bb-864a-49eb-991a-dd21ffe0cf85
Bolton, M.D.
9fbf6ba8-1095-4220-a7f6-38f5463a58e7

White, D.J., Take, W.A. and Bolton, M.D. (2003) Soil deformation measurement using particle image velocimetry (PIV) and photogrammetry. Geotechnique, 53 (7), 619-631. (doi:10.1680/geot.53.7.619.37383).

Record type: Article

Abstract

A deformation measurement system based on particle image velocimetry (PIV) and close-range photogrammetry has been developed for use in geotechnical testing. In this paper, the theory underlying this system is described, and the performance is validated. Digital photography is used to capture images of planar soil deformation. Using PIV, the movement of a fine mesh of soil patches is measured to a high precision. Since PIV operates on the image texture, intrusive target markers need not be installed in the observed soil. The resulting displacement vectors are converted from image space to object space using a photogrammetric transformation. A series of validation experiments are reported. These demonstrate that the precision, accuracy and resolution of the system are an order of magnitude higher than previous image-based deformation methods, and are comparable to local instrumentation used in element testing. This performance is achieved concurrent with an order of magnitude increase in the number of measurement points that can be fitted in an image. The performance of the system is illustrated with two example applications.

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More information

Published date: September 2003
Keywords: Centrifuge modelling, Deformation, Ground movements, Laboratory equipment, Laboratory tests, Model tests

Identifiers

Local EPrints ID: 420048
URI: http://eprints.soton.ac.uk/id/eprint/420048
ISSN: 0016-8505
PURE UUID: c65fa1f7-098b-40c7-bf93-370aeb8c74e4
ORCID for D.J. White: ORCID iD orcid.org/0000-0002-2968-582X

Catalogue record

Date deposited: 25 Apr 2018 16:31
Last modified: 28 Apr 2022 02:20

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Contributors

Author: D.J. White ORCID iD
Author: W.A. Take
Author: M.D. Bolton

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