Smith et al_CGJ_Accepted.pdf (1.64 MB)
Interpretation of uplift pipeline-soil interaction behaviour using acoustic emission measurements
journal contribution
posted on 2022-01-21, 15:30 authored by Alister SmithAlister Smith, Giorgio Barone, Rene Wackrow, Richard StanleyRichard StanleyThe objective of this study was to develop quantitative acoustic emission (AE)
interpretation for uplift pipeline-soil interaction behaviour, enabling early warning of
serviceability and ultimate limit state failures in the field. A series of large-scale uplift
experiments was performed on a steel pipe in sand with different burial depths (i.e., stress
levels), and varying rates of deformation were imposed. A suite of AE parameters was
compared with the pipe force and displacement behaviour. Image-based deformation
measurements were used to monitor the soil displacement field. AE generation was
proportional to the imposed stress level and pipe displacement rate and related to the
evolution of the pipe/soil failure mechanism. Relationships have been quantified between
AE generation and stress level (R2 values of 0.99), and between AE generation rate and
pipe velocity (R2 values ranging from 0.95 to 0.98), enabling interpretation of accelerating
deformation behaviour that accompanies progressive ground failure processes. An
example interpretation framework demonstrates how AE parameters can be used to
identify the mobilisation of peak uplift resistance and quantify accelerating deformation
behaviour during post-peak softening.
Funding
Philip Leverhulme Prize in Engineering (PLP-2019-017)
History
School
- Architecture, Building and Civil Engineering
Published in
Canadian Geotechnical JournalVolume
59Issue
8Pages
1321 - 1333Publisher
NRC Research PressVersion
- AM (Accepted Manuscript)
Rights holder
© The Author(s)Publisher statement
This paper was accepted for publication in the journal Canadian Geotechnical Journal and the definitive published version is available at https://doi.org/10.1139/cgj-2021-0468Acceptance date
2021-12-16Publication date
2021-12-20Copyright date
2021ISSN
0008-3674eISSN
1208-6010Publisher version
Language
- en
Depositor
Dr Alister Smith. Deposit date: 17 December 2021Usage metrics
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