Simulation of liquefaction of unsaturated sand using porous media theory

R. Uzuoka, Motoki Kazama, N. Sento, T. Unno

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Numerical simulations of unsaturated soil triaxial tests were performed using the porous media theory and a simplified elasto-plastic constitutive model for sand. In the tests, cyclic shear strain was applied to fine clean sand with the same dry density but with different initial suction under undrained conditions. The zero skeleton stress state (i.e. liquefaction) for unsaturated sand was achieved when both the pore air pressure and the water pressure built up to the initial total pressure. Therefore, it is necessary to consider pore air pressure for the proper simulation of liquefaction of unsaturated sand. In the simulation, three phases with a soil skeleton, pore water, and pore air were considered on the basis of porous media theory. The simplified elasto-plastic constitutive model for the soil skeleton was based on the non-associated flow rule and the nonlinear kinematic hardening rule. The simulations provided a satisfactory reproduction of the triaxial test results in the cases where the initial degree of saturation was higher than about 70%.

本文言語English
ホスト出版物のタイトルProceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering
ホスト出版物のサブタイトルThe Academia and Practice of Geotechnical Engineering
ページ618-621
ページ数4
DOI
出版ステータスPublished - 2009 12月 1
イベント17th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2009 - Alexandria, Egypt
継続期間: 2009 10月 52009 10月 9

出版物シリーズ

名前Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering
1

Other

Other17th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2009
国/地域Egypt
CityAlexandria
Period09/10/509/10/9

ASJC Scopus subject areas

  • 地盤工学および土木地質学

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