Dynamic Behavior of a Levee on Saturated Sand Deposit
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Accession number;07A0041919
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| Title;Dynamic Behavior of a Levee on Saturated Sand Deposit |
| Author;
TOBITA TETSUO
(Kyoto Univ.)
IAI SUSUMU
(Kyoto Univ.)
UEDA KYOHEI
(Kyoto Univ.)
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Journal Title;Abstracts for Annuals. Disaster Prevention Research Institute, Kyoto University (CD-ROM)
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Journal Code:S0431B
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ISSN:
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VOL.;NO.49;PAGE.NO.49B,369-375(2006)
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| Figure&Table&Reference;FIG.8, TBL.3, REF.19 |
| Pub. Country;Japan |
| Language;English |
| Abstract;Dynamic behavior of an embankment (3 m height) made of dry sand underlain by saturated sand deposit with 5 m depth are studied. Firstly, centrifuge experiments under 50 G are conducted. The relative density of saturated sand deposit is approximately either 30 % or 70 %. Sinusoidal input motions with various levels of peak acceleration amplitude are employed. Test results show that the maximum settlement was 1.4 m and 0.09 m, respectively, for loose and dense deposit. The amount of settlements for dense deposit are found to be proportional to the peak amplitude of input acceleration, while it may have a plateau for the case of loose deposit with increase of input acceleration amplitude. Following the centrifuge experiments, an effective stress analysis is carried out with the same prototype dimension of the experiments. The numerical analysis simulates well deformations and transient motions of the experimental counterparts. It is found that, in the analysis for loose deposit, when input acceleration increased, non-liquefied area underneath the embankment became large, causing larger non-liquefied wedge pushing liquefied soils aside. (author abst.) |
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