Probabilistic assessment of pile group response considering superstructure stiffness and three-dimensional soil spatial variability

Y. F. Leung, M. K. Lo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)

Abstract

This note presents the probabilistic analyses of pile groups considering spatially variable soil properties and superstructure-foundation interaction effects. Condensed stiffness matrices for the superstructure and spatially variable subsurface domain are evaluated individually, and coupled with foundation elements for holistic analyses of the system. Probabilistic assessments are then performed using surrogate modeling method. Parametric studies show that common assumptions of perfect or no spatial correlations in the soil may not represent the critical scenario for pile groups. Two presented foundation case studies also reveal the significance of interactions between superstructure and soil variability, and potentials of foundation tilting due to spatially variable soil properties.

Original languageEnglish
Pages (from-to)193-200
Number of pages8
JournalComputers and Geotechnics
Volume103
DOIs
Publication statusPublished - Nov 2018

Keywords

  • Piled foundation
  • Probabilistic analyses
  • Random field modeling
  • Soil-structure interaction
  • Spatial variability

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications

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