Centrifuge Model Tests on Internal Stability of Group Column Type Improved Ground under Embankment
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- KITAZUME Masaki
- Port and Airport Res. Inst.
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- MARUYAMA Kenji
- Geodesign, Co. Ltd.
Bibliographic Information
- Other Title
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- 盛土荷重下の杭式改良地盤の内部安定性に関する遠心模型実験
- モリツチ カジュウカ ノ クイシキ カイリョウ ジバン ノ ナイブ アンテイセイ ニ カンスル エンシン モケイ ジッケン
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Abstract
The Deep Mixing Method, an in-situ soil stabilization technique using cement and/or lime, is often applied to improve soft soils. The group column type improvement is extensively applied to stabilize foundations of embankment or lightweight structures. The improved ground design procedure in Japan assumes two failure patterns related to external and internal stabilities. External stability is evaluated for the possibility of sliding failure, in which DM columns and clay between show horizontal displacement on a stiff layer without any rearrangement of columns. For internal stability, the possibility of rupture breaking failure is evaluated by slip circle analysis, assuming the shear failure mode of DM columns. In this study, a series of centrifuge model tests was carried out to investigate the internal stability of improved ground under embankment loading. This paper describes the failure modes of DM columns and a proposed simple calculation that takes into account the bending failure mode.
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 57 (1), 18-23, 2008
The Society of Materials Science, Japan
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Details 詳細情報について
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- CRID
- 1390282680394816384
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- NII Article ID
- 130002085768
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- NII Book ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL BIB ID
- 9345072
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed