Micro mechanical interpretation of liquefaction resistance of over-consolidated granular assemblies

M. Kazama, H. Morimoto, Tomohiro Mori, N. Sento, T. Shinozaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The liquefaction resistance of the granular assemblies subjected to various K0 consolidation history was examined using DEM from both micro and macro mechanical viewpoints. The following results are obtained: (1) The over-consolidation effect on the increase of liquefaction resistance originates from the increase of the effective mean principal stress and strengthening of the fabric. (2) The amount of contact energy accumulated among inter-particles increases as the OCR increases, and the total potential energy can be regarded as an index representing the liquefaction resistance of granular assemblies. (3) The over-consolidation history is reset as a result of effective stress reduction by static unloading or cyclic shear loading. (4) Effective stress reduction caused by static/cyclic unloading diminishes the over-consolidation effect. (5) The smaller the particle size, the easier the particle rotates, implying that the easily rotated fine grain particles promote the shear deformation of whole assemblies.

Original languageEnglish
Title of host publicationProceedings of the International Symposium on Geomechanics and Geotechnics of Particulate Media - Geomechanics and Geotechnics of Particulate Media
Pages217-223
Number of pages7
Publication statusPublished - 2006 Dec 1
EventInternational Symposium on Geomechanics and Geotechnics of Particulate Media - Geomechanics and Geotechnics of Particulate Media - Ube, Yamaguchi, Japan
Duration: 2006 Sep 122006 Sep 14

Publication series

NameProceedings of the International Symposium on Geomechanics and Geotechnics of Particulate Media - Geomechanics and Geotechnics of Particulate Media

Other

OtherInternational Symposium on Geomechanics and Geotechnics of Particulate Media - Geomechanics and Geotechnics of Particulate Media
Country/TerritoryJapan
CityUbe, Yamaguchi
Period06/9/1206/9/14

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Fingerprint

Dive into the research topics of 'Micro mechanical interpretation of liquefaction resistance of over-consolidated granular assemblies'. Together they form a unique fingerprint.

Cite this