Full Scale Foundation Testing of Rammed Aggregate Pier® Supported Foundations in the Toronto Waterfront

A. Drevininkas, G. Creer, D. Olshansky, J. Brown, M. Tigchelaar, B. Metcalfe

In the proceedings of: GeoSt. John's 2019: 72nd Canadian Geotechnical Conference

Session: Geotechnical Characterization

ABSTRACT: Construction of a transit maintenance and storage facility in the Toronto waterfront was carried out in deep, uncompacted, and environmentally impacted fills, underlain by compressible peat and organic soils. Ground improvement, consisting of over 7,000 Rammed Aggregate Piers, was used to improve the fill and organics, accelerate grading and surcharge settlement, and support shallow spread foundations, rail slabs, and floor slabs. Extensive field testing was carried out at the site during construction, including full scale Rammed Aggregate Pier element load tests, full scale foundation load tests, full scale foundation plate load tests, measurement of transmitted vertical stresses below the foundation load test, inclinometer monitoring during ground improvement installation, surcharge settlement monitoring, and long-term foundation settlement monitoring during building construction. The results of the monitoring and testing are presented in this paper.

RÉSUMÉ: -compactés et contaminés, de tourbe compressible et autres sols organiques. tallation de plus de 7 000 colonnes ballastées (Rammed Aggregate Piers), pour améliorer les propriétés des remblais et des sols organiques, accélérer les travaux de terrassement et de tassements en surcharge, et supporter les semelles de fondations isolées, les dalles de rails et les dalles au sol. Plusieurs essais in situ ont été effectués sur le site durant les travaux de construction, y compris des essais de charge à grande échelle des éléments des colonnes ballastées et des fondations; des essais en charge à grande échelle des fondations et sur plaque, incluant la mesure des contraintes verticales transmises sous les fondations; le suivi à long terme fondations durant la construction. Ce document présente les résultats de ces essais et suivi de la qualité des travaux.

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Cite this article:
A. Drevininkas; G. Creer; D. Olshansky; J. Brown; M. Tigchelaar; B. Metcalfe (2019) Full Scale Foundation Testing of Rammed Aggregate Pier® Supported Foundations in the Toronto Waterfront in GEO2019. Ottawa, Ontario: Canadian Geotechnical Society.

@article{Geo2019Paper143,author = A. Drevininkas; G. Creer; D. Olshansky; J. Brown; M. Tigchelaar; B. Metcalfe,title = Full Scale Foundation Testing of Rammed Aggregate Pier® Supported Foundations in the Toronto Waterfront,year = 2019}