Mechanism of vacuum consolidation using soil water coupled analysis and application

• KANEDA Kazuhiro

  Takenaka Research & Development Institute, Takenaka Corporation (formerly Port and Airport Research Institute, Soil and Structural Division)

• WATABE Yoichi

  Soil and Structural Division, Port and Airport Research Institute

• YAMAZAKI Hiroyuki

  Soil and Structural Division, Port and Airport Research Institute

• SHINSHA Hiroshi

  Penta-Ocean Construction Co., Ltd.

• SHIINA Takahiko

  Penta-Ocean Construction Co., Ltd.

Bibliographic Information

Other Title

• 水～土連成計算による真空圧密工法の改良メカニズムの検討とその適用例

Abstract

Soil- water coupled analysis of the vacuum consolidation were performed using SYS Cam Clay model, assuming the dredged soil, moisture content of which is high, to be the highly structured soils. The soil void is reduced with the decay of soil structure when the vacuum pressure is loaded under the low effective stress level. As for this consolidation method, the soils are improved by the increase of the effective stress along the soil deep area. Outside the improved area, a shear strain occurred from deep area. From generation of shear strain, a possibility of making the outer foundation heterogeneous from the improved region is being shown. In this paper, it is explained both field cases and numerical simulations. A field and simulation are well similar about settlement, surface shape and lateral displacement. And the possibility of the deformation prediction using FEM was shown.

Journal

• Japanese Geotechnical Journal

  Japanese Geotechnical Journal 4 (3), 245-258, 2009

  The Japanese Geotechnical Society

Keywords

• vacuum consolidation
• FEM
• SYS Cam Clay model

Details

• CRID: 1390282680234034048
• NII Article ID: 130004944063
• DOI: 10.3208/jgs.4.245
• ISSN: 18806341
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed