Aged embankment imaging and assessment using surface waves

David Gunn, Ben A. J. Dashwood, Paolo Bergamo, Shane Donohue

Research output: Contribution to journalArticle

6 Citations (Scopus)
273 Downloads (Pure)

Abstract

Rapid, non-intrusive surface wave surveys provide depth profiles from which ground models can be generated for use in earthwork condition assessment. Stiffness throughout earthworks controls the behaviour under static and dynamic loads, and characterising heterogeneity is of interest in relation to the stability of engineered backfill and life-cycle deterioration in aged utility and transportation infrastructure. Continuous surface wave methods were used to identify interfaces between fine- and coarse-grained fill in an end-tipped embankment along the Great Central Railway in Nottinghamshire, UK. Multichannel analysis of surface wave (MASW) methods were used to characterise subsurface voiding in a canal embankment along the Knottingley and Goole canal near Eggborough, Yorkshire. MASW methods are currently being used to study extreme weather impacts on the stability of a highplasticity clay embankment along the Gloucestershire–Warwickshire railway near Laverton. Optimal results were obtained using equipment capable of generating and detecting over wide frequency ranges.
Original languageEnglish
Pages (from-to)149-165
Number of pages17
JournalProceedings of the ICE, Forensic Engineering
Volume169
Issue number4
Early online date06 Sep 2016
DOIs
Publication statusPublished - 2016

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