2009年7月
Simulation of the progressive failure of an embankment on soft soil
COMPUTERS AND GEOTECHNICS
- ,
- 巻
- 36
- 号
- 6
- 開始ページ
- 1024
- 終了ページ
- 1038
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/j.compgeo.2009.03.010
- 出版者・発行元
- ELSEVIER SCI LTD
A pragmatic strain-softening constitutive model, which is based on Modified Cam Clay, was applied to the simulation of the progressive failure of an embankment constructed on a deposit of sensitive (strain-softening) clay in Saga, Japan. A comparison of the predictions for this case indicates that if softening is ignored, only relatively small deflections and consolidation settlements are predicted, especially after construction. In contrast, for the case where softening is included in the analysis, progressive failure within the clay induces large shear deformations and finally failure of the embankment is predicted. This comparison suggests that softening-induced progressive failure should be considered in the design of embankments on such soils, and the residual strength of the deposit may have an important influence on the overall factor of safety of the construction. Detailed analyses of predicted excess pore water pressures, shear strains and shear stress levels in the ground indicate that considering the strain-softening process: (a) is associated with the buildup of excess pore water pressure; (b) promotes strain localization: and (c) results generally in a larger zone of soil involved in the failure. (C) 2009 Elsevier Ltd. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.compgeo.2009.03.010
- ISSN : 0266-352X
- CiNii Articles ID : 80020381468
- Web of Science ID : WOS:000267314300013