Characterization of the contractive and pore pressure behavior of saturated sand deposits under seismic loading

Vicente Mercado, Waleed El-Sekelly, Mourad Zeghal, Tarek Abdoun, Ricardo Dobry, Sabanayagam Thevanayagam

Research output: Contribution to journalArticle

Abstract

This paper presents an identification technique to characterize the contractive and pore pressure behavior of loose sandy soils under seismic excitation. The technique relies on acceleration and pore pressure records provided during excitation by vertical arrays of accelerometers and pore pressure sensors. The technique employs non-parametric estimates of shear stresses and strains. A multi-surface plasticity approach is used to model the soil response. A reduced scale centrifuge model and a large scale experiment are used to demonstrate the capabilities of the developed technique. The technique allows for a more complete interpretation of the coupled shear–volume behavior of a soil deposit.

Original languageEnglish (US)
Pages (from-to)223-236
Number of pages14
JournalComputers and Geotechnics
Volume82
DOIs
StatePublished - Feb 1 2017

Keywords

  • Downhole array
  • Pore pressure response
  • Soil dynamics
  • System identification

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications

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