Finite element modelling of the uplift behaviour of screw piles in sand

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Abstract

In this paper a simplified procedure to incorporate some installations effects into the numerical finite element modelling of screw pile uplift is presented. The procedure consists of the approximation of the installation phase through 1) the application of a compression loading corresponding to successive embedment depths, 2) the use of modified soil properties over a disturbed zone. Pre-defined failure mechanisms are added to introduce some weakened zones due to either soil disturbance or strain-localisation. The results of numerical simulations are compared to a centrifuge test undertaken at the University of Dundee. The simulation considering an inclined failure mechanism and the simulated installation better captures the uplift capacity and initial stiffness.
Original languageEnglish
Title of host publicationProceedings of the 1st International Symposium on Screw Piles for Energy Applications
Pages69-75
DOIs
Publication statusPublished - 27 May 2019
Event1st International Symposium on Screw Piles for Energy Applications - University of Dundee, Dundee, United Kingdom
Duration: 27 May 201928 May 2019

Conference

Conference1st International Symposium on Screw Piles for Energy Applications
Abbreviated titleISSPEA
CountryUnited Kingdom
CityDundee
Period27/05/1928/05/19

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Keywords

  • Screw piles
  • finite element analysis
  • UPLIFT
  • Sand

Cite this

Cerfontaine, B., Brown, M., Knappett, J., & Davidson, C. (2019). Finite element modelling of the uplift behaviour of screw piles in sand. In Proceedings of the 1st International Symposium on Screw Piles for Energy Applications (pp. 69-75) https://doi.org/10.20933/100001123