K0 estimation in level granular soil from anisotropic wave velocities on the basis of micromechanics

Yii-Wen Pan*, J. C. Liou

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

This study aims to explore the possibility for estimating K0 in a level ground of granular soil by seismic methods on the basis of micromechanics theory. The idea was to simulate in situ cross-hole seismic method for the measurement of wave velocities along various directions of wave-propagation. This work made use of a field simulator to control a K0 condition (zero lateral strain condition) in specimens. A series of vertical loading containing subsequent loading and unloading were applied to the specimen prepared by pluviation. In general, the K0 values determined experimentally in this work agreed with the exiting empirical relations. K0 value was also calibrated from measured anisotropic wave velocities using an optimization procedure. From the comparison of the back-calculated and measured results of K0, it revealed the feasibility for the determination of the in situ lateral stress in granular soil by seismic methods and on the basis of micromechanics theory as long as enough wave-velocity measurements along various directions of wave-propagation were available. The potential for the usage of the presented methodology for the determination of the in situ lateral stress in level-ground of granular soil by seismic methods seems encouraging.

Original languageEnglish
Pages (from-to)1401-1425
Number of pages25
JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
Volume28
Issue number14
DOIs
StatePublished - 10 Dec 2004

Keywords

  • Fabric
  • Granular soil
  • In situ lateral stress
  • K
  • Micromechanics
  • Wave velocities

Fingerprint Dive into the research topics of 'K<sub>0</sub> estimation in level granular soil from anisotropic wave velocities on the basis of micromechanics'. Together they form a unique fingerprint.

  • Cite this