Evaluation of discharging surplus soils for relative stirred deep mixing methods by mps-cae analysis

Koki Nakao, Shinya Inazumi, Toshiaki Takaue, Shigeaki Tanaka, Takayuki Shinoi

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Most of the ground in Japan is soft, leading to great damage in the event of liquefaction. Various ground-improvement measures are being taken to suppress such damage. However, it is difficult to carry out ground-improvement work while checking the internal conditions of the ground during the construction. Therefore, a visible and measurable evaluation of the performance of the ground-improvement work was conducted in this study. The authors performed a simulation analysis of the relative stirred deep mixing method (RS-DMM), a kind of ground-improvement method, using a computer-aided engineering (CAE) analysis based on particle-based methods (PBMs). In the RS-DMM, the “displacement reduction type (DRT)” suppresses displacement during construction. Both the DRT and the normal type (NT) were simulated, and a visible and measurable evaluation was performed on the internal conditions during each construction, the quality of the improved body, and the displacement reduction performance. As an example of these results, it was possible to visually evaluate the discharge of surplus soil by the spiral rod attached to the stirring wing of the DRT. In addition, the authors succeeded in quantitatively showing that more surplus soil was discharged when the stirring wing of the DRT was used than when the stirring wing of the NT was used.

本文言語English
論文番号58
ジャーナルSustainability (Switzerland)
14
1
DOI
出版ステータスPublished - 2022 1月 1

ASJC Scopus subject areas

  • 地理、計画および開発
  • 再生可能エネルギー、持続可能性、環境
  • 環境科学(その他)
  • エネルギー工学および電力技術
  • 管理、モニタリング、政策と法律

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