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”N�F 2002”N
•Å�F 711-716•Å
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Œf�ÚŽGŽ��i‰p�j�F THE EARTHQUAKE ENGINEERING SYMPOSIUM PROCEEDINGS
’˜ŽÒ�i‰p�j�F Kazama Motoki, Sento Noriaki, Mori Tomohiro, Omura Hirofumi, Fukushima Hideaki, Shinozaki Tomotoshi
ƒ^ƒCƒgƒ‹�i‰p�j�F LIQUEFACTION RESISTANCE OF SANDY GROUND SUBJECTED TO OVER-CONSOLIDATION HISTORY
�´˜^�i‰p�j�F Pre-loading method and dewatering method are countermeasures against liquefaction expecting over-consolidation effect. This effect is studied by centrifuge model tests and strain-controlled cyclic tri-axial tests, in which the model ground and the specimen were consolidated through various consolidation histories. The following results are obtained from this study: 1) Over-consolidation effect contributing a settlement reduction is confirmed by centrifuge test. However the effect diminished as the shaking level increased, 2) K 0 -value increase as the OCR increases, but the value decreases after unloading and reloading history, and 3) Over-consolidation effect due to strengthening soil fabric diminished when the specimen is subjected to the cyclic shear strain level over two percent.
ƒL�[ƒ��[ƒh�i‰p�j�F Over-consolidation, Liquefaction, Centrifuge test, K0-consolidation, Strain-controlled cyclic shear test
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