Journal
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
Volume 145, Issue 12, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)GT.1943-5606.0002185
Keywords
Acoustic emission; Buried pipelines; Deformation; Ground movements; Monitoring; Soil-structure interaction
Funding
- UK Engineering and Physical Sciences Research Council Fellowship [EP/P012493/1]
- Natural Sciences and Engineering Research Council of Canada
- Canada Foundation for Innovation
- EPSRC [EP/P012493/1] Funding Source: UKRI
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This paper presents the first full-scale demonstration of the potential use of pipe-soil interaction-generated acoustic emission (AE) for early detection of buried pipe deformation. Full-scale tests were performed at the buried infrastructure research facility at Queen's University, Canada, using a split box apparatus to impose differential ground motion on a steel pipe buried in dry sand, and to investigate the influence of stress level and patterns of deformation on AE generation. The pipe was instrumented with AE sensors, strain gauges, fiber optic strain sensing, and linear potentiometers, and surface deformation was measured using an automatic total station. AE measurements were used to interpret the evolution of the pipe-soil interaction behavior. AE activity correlated strongly (R-2 from 0.83 to 0.99) with both the rate and magnitude of pipe deformation at different burial depths, and quantified relationships are presented that enable interpretation of pipe-soil interaction behavior from AE measurements. (C) 2019 American Society of Civil Engineers.
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