EFFECTS OF SAMPLE DISTURBANCE ON SMALL STRAIN CHARACTERISTICS AND LIQUEFACTION PROPERTIES OF HOLOCENE AND PLEISTOCENE SANDY SOILS
スポンサーリンク
概要
- 論文の詳細を見る
To investigate liquefaction properties of sandy soils, undrained cyclic loading tests are usually performed. However, it would be difficult to simulate fully the actual soil behaviour through the laboratory tests because the tested sample can be disturbed even though it is taken by in-situ freezing technique. In this study, by using three kinds of in-situ frozen sandy soils which were taken from Holocene and Pleistocene deposits and their reconstituted samples, their volume change properties were measured during freeze and thaw processes at different confining pressures of 30kPa and 98kPa. In order to investigate the effects of the possible sample disturbance on the liquefaction resistance, small strain characteristics were measured as well, which would reflect the soil structure. Decreases in the small strain characteristics and the liquefaction resistance were observed in case of the Holocene specimens that were thawed at the confining pressure that was lower than the in-situ overburden stress. On the other hand, in case of the Pleistocene specimens, the effects of the confining pressure during the thaw process on the small strain characteristics and the liquefaction resistance were small. Such contrastive feature between the Holocene and the Pleistocene samples could be linked with the difference in the types of their natural aging effects.
- 社団法人地盤工学会の論文
著者
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Kiyota Takashi
Tokyo University Of Science
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KOSEKI JUNICHI
Institute of Industrial Science, University of Tokyo
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SATO TAKESHI
Integrated Geotechnology Institute Limited
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TSUTSUMI YUKIKA
Integrated Geotechnology Institute Limited
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SATO TAKESHI
Institute of Industrial Science, University of Tokyo
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Koseki Junichi
Univ. Tokyo Jpn
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Koseki Junichi
Institute Of Industrial Science The University Of Tokyo
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Tsutsumi Yukika
Integrated Geotechnology Inst. Ltd Jpn
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Sato Takeshi
Institute Of Industrial Science University Of Tokyo
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