Geosynthetics reinforced MSE wall design and construction on the Southeast Stoney Trail PPP project, Calgary, AB

Hardwin Zhanhong Zhen

In the proceedings of: GeoMontréal 2013: 66th Canadian Geotechnical Conference; 11th joint with IAH-CNC

Session: Earth Walls and Dams II

ABSTRACT: Geosynthetics were used to reinforce 12,000m2 of MSE walls for Southeast Stoney Trail (SEST), Alberta's largest single highway project and PPP project. From Fall of 2010 to late 2012, Nilex Inc. (Nilex) successfully completed the design, panel fabrication and the site assistance of this MSE project. Challenges such as low bearing capacity, insufficient coverage ratio, and top panel misalignment were mitigated through staged design, special construction techniques, multi-discipline team work and proper project management. The anti-chemical characteristics of geosynthetics saved time and cost to prevent the de-icing water from seeping along the wall. The maximum design height was 9.31m for the abutment wall with CSP-cased piles on each abutment spaced at 1500 mm which generally left an effective coverage ratio of 50% behind the abutment. In addition, special custom-fabricated panels were used to increase the 34% efficient coverage.

RÉSUMÉ: Des géosynthétiques ont été utilisés pour renforcer 12.000 m2 de murs de terre stabilisée mécaniquement (MSE selon son sigle en anglais) pour le projet Sud-est Stoney Trial (SEST), le plus grand projet d'autoroute de l'Alberta et des projets du type PPP. De l'automne 2010 à la fin de 2012, Nilex Inc. (Nilex) a complété avec succès la conception, ainsi que la fabrication de panneaux et l'assistance sur place pour ce projet de type MSE. Des défis tels que la faible capacité portante, le taux de couverture insuffisante, le désalignement du haut des panneaux ont été atténués grâce à une conception innovante à techniques de construction particulières, à la bonne gestion du projet. La resistance chimique des géosynthétiques a permis s coûts La hauteur maximale etait 9.31m pour le mur de la culée du pont avec des pieux de type CSP espacée a 1500 mm dans chaque culée, généralement en utilisant un taux de couverture effective de 50% derrière les culées. De plus, un panneau spécial fabriqué sur mesure a permis d'augmenter la couverture efficace de 34%.

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Cite this article:
Hardwin Zhanhong Zhen (2013) Geosynthetics reinforced MSE wall design and construction on the Southeast Stoney Trail PPP project, Calgary, AB in GEO2013. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GeoMon2013Paper738,author = Hardwin Zhanhong Zhen,title = Geosynthetics reinforced MSE wall design and construction on the Southeast Stoney Trail PPP project, Calgary, AB ,year = 2013}