The Use of Geopier Ground Improvement for Two Approach Embankments Constructed Along Highway 15 Over Soft Clays Adjacent to an Existing Creek in Eastern Ontario.

Jason Brown

In the proceedings of: GeoVancouver 2016: 69th Canadian Geotechnical Conference

Session: GROUND IMPROVEMENT - III

ABSTRACT: This paper discusses the use of ground improvement to provide foundation support, and slope stabilization of the northern and southern approapproach embankments required up to 3.7 m of fill to be placed over a 3 to 4 m thick deposit of soft to firm clayey silt to clay soils. The clay soils were considered too weak to provide the required foundation support and global stability of the embankments. Given the proximity of the embankments to the existing highway and creek bed, the Ministry of Transportation of Ontario was interested in pursuing less intrusive and cost effective solutions to support the approach embankments. This project was delivered as a turn-key, design-build ground improvement project based on a performance specification for both settlement and global stability. The project is subject to continuous monitoring of settlement to verify the performance of the ground improvement solution during the seven (7) year warranty period.

RÉSUMÉ: Cet article traite de l'utilisation de l'amélioration des sols Geopier pour fournir un soutien de la fondation, et la stabilisation des talus des remblais d'approche nord et sud de la nouvelle autoroute 15 Crosby Creek Bridge dans la baie de Seeley, Ontario. Les remblais d'approche nécessaires jusqu'à 3,7 m de remblai pour être placé sur un 3 à 4 m d'épaisseur dépôt de doux pour raffermir limon argileux de sols argileux. Les sols argileux ont été considérés comme trop semaine pour fournir le support de base requis et la stabilité mondiale des digues. Étant donné la proximité des digues à la route existante et lit du ruisseau, le ministère des Transports de l'Ontario était intéressé à poursuivre moins intrusive, mais le coût des solutions efficaces pour soutenir les remblais d'approche. Ce projet a été livré en tant que clé en main, de conception-construction projet d'amélioration des sols basée sur une spécification de performance tant pour l'établissement et la stabilité mondiale. Le projet est soumis à la surveillance de règlement en cours pour vérifier les performances de la solution d'amélioration des sols au cours de la période de garantie de sept (7) ans.

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Cite this article:
Jason Brown (2016) The Use of Geopier Ground Improvement for Two Approach Embankments Constructed Along Highway 15 Over Soft Clays Adjacent to an Existing Creek in Eastern Ontario. in GEO2016. Ottawa, Ontario: Canadian Geotechnical Society.

@article{3991_0721074511,author = Jason Brown,title = The Use of Geopier Ground Improvement for Two Approach Embankments Constructed Along Highway 15 Over Soft Clays Adjacent to an Existing Creek in Eastern Ontario.,year = 2016}