TY - GEN
T1 - Micro mechanical interpretation of liquefaction resistance of over-consolidated granular assemblies
AU - Kazama, M.
AU - Morimoto, H.
AU - Mori, Tomohiro
AU - Sento, N.
AU - Shinozaki, T.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:56149101093
SN - 0415410975
SN - 9780415410977
T3 - Proceedings of the International Symposium on Geomechanics and Geotechnics of Particulate Media - Geomechanics and Geotechnics of Particulate Media
SP - 217
EP - 223
BT - Proceedings of the International Symposium on Geomechanics and Geotechnics of Particulate Media - Geomechanics and Geotechnics of Particulate Media
T2 - International Symposium on Geomechanics and Geotechnics of Particulate Media - Geomechanics and Geotechnics of Particulate Media
Y2 - 12 September 2006 through 14 September 2006
ER -