Identification and imaging of soil and soil-pile deformation in the presence of liquefaction

M. Zeghal, P. V. Kallou, C. Oskay, T. Abdoun, M. K. Sharp

Research output: Contribution to journalArticle

Abstract

A simple identification technique is developed to visualize the dynamic deformation mechanisms of centrifuge models of saturated soil and soil-pile systems using the measurements provided by sparsely distributed sensors. Cross-correlation analyses are employed first to assess the variation of shear wave velocity profile with time as soil experiences stiffness reduction and degradation during dynamic excitations. The corresponding time-dependent modal configurations are determined using the finite-element technique. These configurations are used along with recorded motions to evaluate optimal time histories of displacement and strain fields based on a spectral motion reconstruction. Visualizations of the response of infinite slope and soil-pile centrifuge models revealed salient and complex multi-dimensional deformation patterns, especially at high pore pressure ratios. The developed technique provides an effective tool to visualize and analyze the dynamic response of centrifuge, shake-table and field soil systems.

Original languageEnglish (US)
Pages (from-to)171-182
Number of pages12
JournalEarthquake Engineering and Engineering Vibration
Volume5
Issue number2
DOIs
StatePublished - Dec 2006

Keywords

  • Centrifuge model
  • Liquefaction
  • Soil dynamics
  • Visualization

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Identification and imaging of soil and soil-pile deformation in the presence of liquefaction'. Together they form a unique fingerprint.

  • Cite this