EFFECTS OF LOADING PERIOD OF CYCLIC SHEAR ON THE SETTLEMENT OF SATURATED CLAYEY LAYER

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  • 繰返しせん断に起因した粘土層の沈下に及ぼす周期の影響
  • クリカエシ センダン ニ キインシタ ネンドソウ ノ チンカ ニ オヨボス シ

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Abstract

Two-way strain controlled cyclic simple shear tests with different loading periods (0.2-10s) are performed for normally and overconsolidated kaolinite clay specimens (OCR=1, 6). The specimens are subjected to cyclic shear under undrained condition and subsequently the cumulated excess pore water pressure are dissipated. In conclusion, it is clarified that for normally consolidated clay, the larger the period of cyclic shear, the larger the excess pore water pressure becomes and that with the increase of OCR, effects of the period on the cumulated excess pore water pressure disappear. As for the settlement, however, the effects of period can not be seen.

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