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Utili, Stefano; Castellanza, Riccardo; Galli, Andrea; Sentenac, Phillippe (2015)
Publisher: American Society of Civil Engineers
Languages: English
Types: Article
Subjects: TA
This paper introduces a novel modular approach for the monitoring of desiccation-induced deterioration in earthen embankments (levees), which are typically used as flood-defense structures. The approach is based on the use of a combination of geotechnical and noninvasive geophysical probes for the continuous monitoring of the water content in the ground. The level of accuracy of the monitoring is adaptable to the available financial resources. The proposed methodology was used and validated on a recently built, 2-km-long river embankment in Galston (Scotland, United Kingdom). A suite of geotechnical probes was installed to monitor the seasonal variation of water content over a 2-year period. Most devices were calibrated in situ. A novel procedure to extrapolate the value of water content from the geotechnical and geophysical probes at any point of the embankment is shown. Desiccation fissuring degrades the resistance of embankments against several failure mechanisms. An index of susceptibility is proposed here. The index is a useful tool to assess the health state of the structure and prioritize remedial interventions.\ud \ud \ud
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • 1. Allsop W., Kortenhaus A., Morris M., Buijs F., Hassan R., Young M., Doorn N., der Meer J., Van Gelder P., Dyer M., Redaelli M., Utili S., Visser P., Bettess R., Lesniewska D., Horst W. (2007). Failure mechanisms for flood defence structures. EU FP7 FLOODSite task 4, Research Report: T04-06-01.
    • 2. Andersen G.R., Chouinard L.E., Bouvier C., Back W.E. (1999). Ranking procedure on maintenance tasks for monitoring of embankment dams. Journal of Geotechnical and Geoenvironmental Engineering, 125, 247-259.
    • 3. Aubeny C.P., Lytton R.L. (2004). Shallow slides in compacted high plasticity clay slopes. J Geotech & Geoenv Engrg ASCE, 130, 717-727.
    • 10. Dyer M., Utili S., Zielinski M. (2009). Field survey of desiccation fissuring of flood embankments. Proc. ICE Water Management 162, 221-232.
    • 31. Zhang Z., Tao M., Morvant M. (2005). Cohesive slope surface failure and evaluation. J Geotech & Geoenv Engrg ASCE, 131, 898-906.
    • 32. Zielinski M. (2009). Influence of desiccation fissuring on the stability of flood embankments. PhD thesis, University of Strathclyde, Glasgow (UK).
    • 33. Zielinski M., Sanchez M., Romero E., Sentenac P. (2011). Assessment of water retention behaviour in compacted fills. Proc. ICE Geotechnical Engineering, 164, 139-148.
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