Stabilization of Alberta Highway Landslides using Pile Walls

Tarek S. Abdelaziz, Donald W. Proudfoot, Roger Skirrow

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Landslides

ABSTRACT: More than 25 pile walls have been constructed to remediate landslide movements affecting Alberta highways over the last three decades. Cantilever and tied-back pile walls have been used at numerous sites in Alberta. The pile types have varied from driven steel to cast-in-place concrete piles, while the tie backs have consisted predominantly of grouted and screw anchors. In some cases, composite pile walls consisting of cast-in-place below ground concrete piles and above ground H-piles with timber lagging were used. The paper summarizes pertinent details from 28 pile wall sites, and reviews the wall design details from several projects. These details are used to establish rules of thumb for when pile walls could be considered to remediate landslides, what types of piles could be used, and whether cantilever or tied back pile retaining systems are likely to be more cost-effective. Some instrumentation monitoring results such as wall deflections and anchor loads are also presented and discussed to demonstrate the performance of these retaining structures.

RÉSUMÉ: Au cours des trois denrnières décennies en Alberta, au delà de 25 murs de soutenement à membrures verticales ont murs en porte-à-faux et à pieux avec parois ancrées ont été utilisés à plusieurs reprises sur ces sites en Alberta. Le type de pieu utilisé variait de pieux battux en acier à des pieux forés avec béton coulé-en-utilisé fut majoritarement du type scellé par injection de coulis ou des ancrages visés. Dans certains cas, des murs composites ont été utilisés comprenant des pieux en béton coulé-en-en parois berlinoises avec blindage en bois au-dessus du sol. Cet article résume les détails pertinents de 28 sites conception des murs de plusieurs projets. Ces détail-de-dans quelles circonstances des pieux pourront être utilisés pour remédier un glissment, le type de pieu préférable, anisi que si un mur de soutement en porte-à-faux ou à parois ancrées est plus économique. Quelques données prises lors et discutées afin de mettre en évidence la performance de ces ouvrages de soutenement.

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Cite this article:
Tarek S. Abdelaziz; Donald W. Proudfoot; Roger Skirrow (2011) Stabilization of Alberta Highway Landslides using Pile Walls in GEO2011. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GEO11Paper526,author = Tarek S. Abdelaziz; Donald W. Proudfoot; Roger Skirrow ,title = Stabilization of Alberta Highway Landslides using Pile Walls,year = 2011}