Structural behavior of a pile-supported embankment

G. S. Wachman, L. Biolzi, J. F. Labuz

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

The stress field in a pile-supported 3.9-m-high embankment was interpreted through three-dimensional finite-element modeling, and evaluated by field measurements involving strain gauges on the piles and earth pressure cells at the top and bottom of a 0.9-m-thick geogrid-reinforced platform. Analyses of the numerical results and the experimental data suggest that a vaultlike arch developed within the embankment, such that the vertical stress at the top of the platform was concentrated above the piles and virtually no vertical stress was measured between the piles. A similar situation existed within the platform, where an almost stress-free region between the piles was experimentally detected and numerically verified. From a structural point of view, a supporting skeleton was formed from a pile extension through the platform, a type of stress diffusion problem, and an arching effect appeared mainly in the embankment due to the very large stiffness of the piles in comparison to the surrounding media.

Original languageEnglish (US)
Article number009001QGT
Pages (from-to)26-34
Number of pages9
JournalJournal of Geotechnical and Geoenvironmental Engineering
Volume136
Issue number1
DOIs
StatePublished - Feb 10 2010

Keywords

  • Earth pressure
  • Embankment
  • Embankment stability
  • Field tests
  • Geogrids
  • Load transfer
  • Piles
  • Platforms
  • Stress distribution
  • Structural behavior

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