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Finite Element Analyses of the St. Alban Test Embankments

by V. R. Schaefer, Univ of New Mexico, Albuquerque, NM, USA,
J. M. Duncan,



Document Type: Proceeding Paper

Part of: Geosynthetics for Soil Improvement

Abstract:

Finite element analyses were performed of three embankments on sensitive clay that were constructed to failure at St. Alban, Quebec. One of the embankments was reinforced with flat-lying Tensar SR2 geogrids, one was reinforced with a three-dimensional 'foundation mattress' formed of geogrid strips linked together to form cells which were filled with sand, and the third embankment had no reinforcement. The results of the finite element analyses were in good agreement with the measured field behavior during early stages of construction, when the embankment were stable. The results are useful for assessing the reliability of finite element analyses for use in design of reinforced embankments on sensitive clays.

Subject Headings: Soil stabilization | Finite element method | Soil analysis | Failure analysis | Clays | Geogrids | Geosynthetics | Quebec | Canada

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