An elsto-plastic description of two distinct volume change mechanisms of soils

• 浅岡 顕

• 野田 利弘

• 山田 英司

• 金田 一広

• 中野 正樹

書誌事項

タイトル別名

• An Elasto-Plastic Description of Two Distinct Volume Change Mechanisms of Soils.
• Elasto Plastic Description of Two Distinct Volume Change Mechanisms of Soils
• An elasto-plastic description of two distinct volume change mechanics of soils
• An elasto-plastic description of two distinct volume change mechanism of soils

抄録

In critical state soil mechanics, the volume change behavior of soils has typically been analyzed based upon conventional "e-logp' relationships". However, compaction/densification of loose sand, for example, can sometimes occur even without any significant increase of mean effective stresses. This study presents a model which considers the fact that volume change can occur due to decay/collapse of the structure of soils. Taking into consideration the differences between clay and sand, this study models super-subloading surfaces together with rotational hardening using the modified Cam-clay model. The effects of decay of the soil structure, loss of overconsolidation and evolution of anisotropy are mutually discussed concerning their relationship with ongoing plastic deformation. Fundamental constitutive model responses are illustrated in the present study particularly for "compaction" of sand. Repeated application of low-level shear stress upon loose sand yields a huge amount of volume compression, which is due to the rapid collapse of the initial soil structure. Repetition of the loading also results in a rapid increase of the overconsolidation ratio. Drained and undrained shear behavior of the sand naturally changes remarkably along this densification/compaction procedure, which is also consistently predicted using a single set of soil parameters. Elasto-plastic behavior of the same sand at various densities is thus totally described in the present study in a single the-oretical framework based on soil parameters independent of density.

収録刊行物

• 地盤工学会論文報告集

  地盤工学会論文報告集 42 (5), 47-57, 2002

  公益社団法人 地盤工学会

キーワード

• (super-subloading surfaces)

詳細情報

• CRID: 1390282679587239424
• NII論文ID: 110003946282
• NII論文ID: 130004247674
• NII書誌ID: AN10496056
• DOI: 10.3208/sandf.42.5_47
• NDL書誌ID: 6337151
• ISSN: 13417452
• ISSN: 00380806
• ISSN: http://id.crossref.org/issn/00380806
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6337151
• Web Site: https://api.elsevier.com/content/article/PII:S0038080620308933?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S0038080620308933?httpAccept=text/plain
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10423892
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • NDL-Digital
  • CiNii Articles
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