Study on Stress Sharing Mechanism Composition Ground Improved by SCP with Low Replacement Area Ratio

저치환율 SCP에 의한 복합지반의 응력분담 메커니즘에 관한 연구

  • You, Seung-Kyong (Coastal & Harbor Engineering Division, Korea Ocean Research & Development Institute) ;
  • Matsui, Tamotsu (Dept. of Civil Engineering, Osaka University) ;
  • Hong, Won-Pyo (Dept. of Civil & Environment Engineering, Chung-Ang University) ;
  • Yoon, Gil-Lim (Coastal & Harbor Engineering Division, Korea Ocean Research & Development Institute)
  • 유승경 (한국해양연구원 연안항만공학본부) ;
  • 송정보 (오사카대학 토목공학과) ;
  • 홍원표 (중앙대학교 건설환경공학과) ;
  • 윤길림 (한국해양연구원 연안항만공학본부)
  • Published : 2004.03.25

Abstract

In order to design accurately sand compaction pile (SCP) method with low replacement area ratio, it is important to understand the mechanical interaction between sand piles and clays and its mechanism during consolidation process of the composition ground. In this paper, a series of numerical analyses on composition ground improved by SCP with low replacement area ratio were carried out, in order to investigate the mechanical interaction between sand piles and clays. The applicability of numerical analyses, in which an elasto-viscoplastic consolidation finite element method was applied, could be confirmed comparing with results of a series of model tests on consolidation behaviors of composition ground improved by SCP. And, through the results of the numerical analyses, each mechanical behaviors of sand piles and clays in the composition ground during consolidation was elucidated, together with stress sharing mechanism between sand piles and clays.

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