Performance of single piles subjected to vertical and lateral loads in sand

Maria Diakoumi, Kevin Stone, Muhammad Ibrahim

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNpeer-review

Abstract

Pile foundations are extensively used in current geotechnical engineering practice to support vertical and lateral loading. However, there is a limited number of experimental studies on the performance of piles under combined loading available in the literature and their results appear to be inconsistent. This study is focused on the experimental investigation of the effects of vertical loading on the lateral resistance of single piles installed in cohesionless soil. To this aim, a series of centrifuge tests were undertaken on single model piles embedded in sand and subjected to pure lateral loads and combined vertical and lateral loads. The tests were conducted at an enhanced acceleration level of 50 gravities in a balanced beam geotechnical centrifuge in medium to dense uniformly graded dry sand. The results are presented through load versus displacement plots, from which lateral capacities are derived for various vertical loads. The test results demonstrate that the pile lateral capacity and stiffness increase when vertical loads are applied, although this beneficial effect on the pile’s lateral response diminishes at values of vertical load equal or greater than the pile’s vertical load capacity and at large displacements.
Original languageEnglish
Title of host publicationPiling 2020
Subtitle of host publicationProceedings of the Piling 2020 Conference
EditorsK.G. Higgins, Y. Ainsworth, D.G. Toll, A.S. Osman
Pages265-270
Number of pages6
ISBN (Electronic)9780727765055
Publication statusPublished - 10 Mar 2021
EventPiling 2020 - online
Duration: 23 Mar 202126 Mar 2021
https://www.piling2020.org/

Conference

ConferencePiling 2020
Period23/03/2126/03/21
Internet address

Keywords

  • piles & piling
  • centrifuge modelling
  • vertical load
  • horizontal load

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