Pipeline-soil interaction behaviour: acoustic emission and energy dissipation
Acoustic emission (AE) offers the potential to monitor and interpret soil-pipe interaction behaviour by sensing particle-scale interactions. However, application of AE is limited by gaps in understanding related to how particle-scale interactions influence AE activity. Discrete Element Method (DEM) simulations of buried pipe uplift with energy tracking were performed and compared with experimental mechanical, displacement and AE measurements, to ensure realistic behaviour was captured by the modelling approach. A parametric investigation was then performed to evaluate the influence of pipe displacement direction and pipe diameter on plastic energy dissipation, and hence AE. Trends of dissipated plastic energy and measured AE with stress level (via burial depth) and pipe velocity were analogous. Relationships were quantified (R2 ranging from 0.74 to 0.98) between AE, dissipated plastic energy, and pipe velocity. Measured AE and dissipated plastic energy were linked with a general expression, comprising increments of friction (sliding and rolling), damping, and damage energies.
Sliding friction energy accounted for >80% of the total dissipated energy on average during buried pipe deformation. Exemplar relationships were established between dissipated energy, pipe movement direction, embedment ratio, and mobilised soil volume (R2 values ranging from 0.92 to 0.97). A conceptual framework for interpreting buried pipe behaviour using AE monitoring was presented.
Funding
Fellowship - Listening to Infrastructure : EP/P012493/1
History
School
- Architecture, Building and Civil Engineering
Published in
Journal of Geotechnical and Geoenvironmental EngineeringVolume
151Issue
2Publisher
American Society of Civil Engineers (ASCE)Version
- AM (Accepted Manuscript)
Rights holder
© ASCEPublisher statement
This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at: https://ascelibrary.org/doi/epdf/10.1061/JGGEFK.GTENG-12913Acceptance date
2024-08-19Publication date
2024-11-21Copyright date
2024ISSN
1090-0241eISSN
1943-5606Publisher version
Language
- en