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Long-term monitoring of long linear geotechnical infrastructure for a deeper understanding of deterioration processes

Long-term monitoring of long linear geotechnical infrastructure for a deeper understanding of deterioration processes
Long-term monitoring of long linear geotechnical infrastructure for a deeper understanding of deterioration processes
Long linear geotechnical infrastructure such as earth embankments and cuttings used for railways, highways and flood defence can progressively reduce in performance over time as a result of aging and deterioration principally driven by environmental cycles of wetting and drying. These include volumetric and fabric changes including desiccation cracking, accumulating downslope plastic strain and geo-chemical/mineralogical changes, influencing the strength, stiffness, permeability and water retention behaviour of the soils from which they are constructed. A deeper understanding of these processes is necessary to develop effective tools for assessing and forecasting the geotechnical condition of long linear infrastructure over the lifespan of the asset and in response to climate change. As part of a major research project called ACHILLES, three exemplar long linear geotechnical earthworks have been instrumented with state-of-the-art sensors for long-term monitoring of deterioration behaviour and condition. The monitored sites are a highway cutting slope, a constructed trial embankment and a flood embankment. The sites are also being extensively characterised using geophysical, geodetic, UAV and cone penetrometer approaches. Data from these exemplar assets is of fundamental importance to understanding deterioration processes and is being used to validate conceptual and numerical models of asset performance and enable rapid characterisation of their current condition.
Blake, Anthony
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Smethurst, Joel
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Yu, Zelong
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Brooks, Helen
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Stirling, Ross
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Holmes, Jessica
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Watlet, Arnaud
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Whiteley, James
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Chambers, Jon
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Hughes, Paul
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Smith, Alister
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Briggs, Kevin M.
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Blake, Anthony
e0438bea-cfc4-4373-b100-8b9768ddc56f
Smethurst, Joel
8f30880b-af07-4cc5-a0fe-a73f3dc30ab5
Yu, Zelong
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Brooks, Helen
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Stirling, Ross
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Holmes, Jessica
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Watlet, Arnaud
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Whiteley, James
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Chambers, Jon
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Hughes, Paul
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Smith, Alister
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Briggs, Kevin M.
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Blake, Anthony, Smethurst, Joel, Yu, Zelong, Brooks, Helen, Stirling, Ross, Holmes, Jessica, Watlet, Arnaud, Whiteley, James, Chambers, Jon, Hughes, Paul, Smith, Alister and Briggs, Kevin M. (2022) Long-term monitoring of long linear geotechnical infrastructure for a deeper understanding of deterioration processes. 11th International Symposium on Field Monitoring in Geomechanics, Imperial College London, London, United Kingdom. 04 - 08 Sep 2022. 7 pp . (In Press)

Record type: Conference or Workshop Item (Paper)

Abstract

Long linear geotechnical infrastructure such as earth embankments and cuttings used for railways, highways and flood defence can progressively reduce in performance over time as a result of aging and deterioration principally driven by environmental cycles of wetting and drying. These include volumetric and fabric changes including desiccation cracking, accumulating downslope plastic strain and geo-chemical/mineralogical changes, influencing the strength, stiffness, permeability and water retention behaviour of the soils from which they are constructed. A deeper understanding of these processes is necessary to develop effective tools for assessing and forecasting the geotechnical condition of long linear infrastructure over the lifespan of the asset and in response to climate change. As part of a major research project called ACHILLES, three exemplar long linear geotechnical earthworks have been instrumented with state-of-the-art sensors for long-term monitoring of deterioration behaviour and condition. The monitored sites are a highway cutting slope, a constructed trial embankment and a flood embankment. The sites are also being extensively characterised using geophysical, geodetic, UAV and cone penetrometer approaches. Data from these exemplar assets is of fundamental importance to understanding deterioration processes and is being used to validate conceptual and numerical models of asset performance and enable rapid characterisation of their current condition.

Text
ISFMG2022 Blake et al 26june22 R1 - Accepted Manuscript
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More information

Accepted/In Press date: 6 June 2022
Venue - Dates: 11th International Symposium on Field Monitoring in Geomechanics, Imperial College London, London, United Kingdom, 2022-09-04 - 2022-09-08

Identifiers

Local EPrints ID: 468079
URI: http://eprints.soton.ac.uk/id/eprint/468079
PURE UUID: 7bc5cecb-7943-4885-962c-e11b2f773084

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Date deposited: 01 Aug 2022 16:43
Last modified: 01 Aug 2022 16:43

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Contributors

Author: Anthony Blake
Author: Joel Smethurst
Author: Zelong Yu
Author: Helen Brooks
Author: Ross Stirling
Author: Jessica Holmes
Author: Arnaud Watlet
Author: James Whiteley
Author: Jon Chambers
Author: Paul Hughes
Author: Alister Smith
Author: Kevin M. Briggs

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