Liquefaction Assessment and Soil Spatial Variation

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Abstract

Soil liquefaction is investigated considering a saturated soil deposit and by implementing standard techniques of random field theory to distribute initial void ratio values and assess liquefaction risk. The soil domain is represented in a 2-dimensional (2D) random finite element model for the dynamic analysis of coupled behavior. Multiple Monte Carlo realizations are subjected to a base acceleration, while cyclic and small strain soil behaviours are achieved through a hypoplastic constitutive model. This investigation demonstrates that 2D stochastic simulations converge to 2D deterministic simulations when small standard deviations and/or small scales of fluctuation are used. However, large standard deviations combined with relatively large scales of fluctuation may cause significant uncertainty in the response of the soil deposit. Finally, common techniques employed to assess soil liquefaction are evaluated based on the results of the deterministic and random field analyses.

Original languageEnglish
Title of host publicationChallenges and Innovations in Geomechanics
Subtitle of host publicationProceedings of the 16th International Conference of IACMAG
EditorsMarco Barla, Alessandra Insana, Alice Di Donna, Donatella Sterpi
Place of PublicationCham
PublisherSpringer Science
Pages283-290
Number of pages8
Volume3
ISBN (Electronic)978-3-031-12851-6
ISBN (Print)978-3-031-12850-9
DOIs
Publication statusPublished - 2023
Event6th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2022 - Turin, Italy
Duration: 30 Aug 20222 Sep 2022

Publication series

NameLecture Notes in Civil Engineering
Volume288 LNCE
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference6th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2022
Country/TerritoryItaly
CityTurin
Period30/08/222/09/22

Bibliographical note

Accepted author manuscript

Keywords

  • Coupled behaviour
  • Earthquakes
  • Hypoplasticity
  • Liquefaction
  • Random fields

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