Insight into the seismic liquefaction performance of shallow foundations

Dimitris K. Karamitros, George D. Bouckovalas, Yannis K. Chaloulos

Research output: Contribution to journalArticle (Academic Journal)

42 Citations (Scopus)

Abstract

The mechanisms that control the seismic liquefaction performance of shallow foundations are identified for the special, still common case of a clay crust separating the foundation from the liquefied ground. For that purpose, foundation response is first analyzed with the nonlinear dynamic finite-difference method and consequently evaluated in connection with published field and experimental evidence. Insight is given into the excess pore-pressure buildup under the foundation, the seismic settlement accumulation, the static-bearing capacity degradation, and the inertia-induced interaction with the superstructure. It is thus shown that a naturally or artificially created nonliquefiable soil crust may effectively mitigate the detrimental effects of liquefaction and allow for a performance-based design of surface foundations, without additional improvement measures. DOI:10.1061/(ASCE)GT.1943-5606.0000797. (C) 2013 American Society of Civil Engineers.

Original languageEnglish
Pages (from-to)599-607
Number of pages9
JournalJournal of Geotechnical and Geoenvironmental Engineering
Volume139
Issue number4
DOIs
Publication statusPublished - Apr 2013

Keywords

  • Shallow foundations
  • Earthquakes
  • Liquefaction
  • Clay crust
  • Numerical analysis
  • Excess pore pressures
  • Settlement
  • Bearing capacity
  • Soil-structure interaction
  • Performance-based design

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