Generalized finite-element algorithm for laterally loaded piles in permafrost in comparison with measurements

• Published in: Canadian Geotechnical Journal
• Main Authors: Foriero, A., Ladanyi, B.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1991
• Subjects: Civil and Structural Engineering; Geotechnical Engineering and Engineering Geology; Ice; permafrost
• Online Access: http://dx.doi.org/10.1139/t91-069; http://www.nrcresearchpress.com/doi/pdf/10.1139/t91-069

This paper introduces an elasto-viscoplastic approach for the problem of a single laterally loaded pile in permafrost. The method requires the knowledge of a subgrade modulus k, a creep modulus k r , a yield strength q y , a displacement hardening parameter H* (for an ice-rich soil this amounts to a pure creep problem, thus q y and H* are reduced to zero), and creep parameters n, b, and γ. Finally, the validity of the proposed method is checked against the results of model pile tests that have been carried out at the Northern Engineering Centre of École Polytechnique. Key words: pile, lateral load, laboratory testing, elasto-viscoplastic soil, transient creep law.