Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Development of New Settlement Model for Prediction of Settlement Characteristics of SCP Composite Ground

SCP 복합지반 침하거동예측을 위한 새로운 침하모델의 개발

  • 유상호 (부산대학교 사회환경시스템 공학부) ;
  • 박현일 (삼성건설 기술연구소) ;
  • 임종철 (부산대학교 사회환경시스템 공학부) ;
  • 박이근 ((주)지오알앤디)
  • Published : 2009.08.31
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Abstract

In this study, the reliable and simple analysis method was proposed to predict the settlement characteristic of composite ground in stage of design and construction of sand compaction pile (SCP). Model parameters could be obtained by the optimization process based on genetic algorithm. In order to examine the proposed method, laboratory consolidation tests on the settlement characteristic of SCP composite ground were performed for various replacement ratio of sand such as 0 (no replacement), 20, 36, and 56%. The proposed model showed very good agreements with measured data in the relation of void ratio-log scaled stress and time-compression far each replacement ratio.

본 연구에서는 모래 다짐말뚝 공법의 설계 및 시공단계에서 침하거동 예측에 활용될 수 있는 합리적이고 간편한 해석기법을 제안하였으며, 모델 계수값들은 유전자 알고리즘에 근거한 최적화 과정을 통하여 구할 수 있다. 제안된 기법의 검증을 위하여 0(무치환), 20, 36 및 56%의 다양한 모래 치환율에 대한 SCP 복합지반의 침하거동에 관한 실내압밀실험이 수행되었다. 제안된 모델은 각 치환율에 대하여 간극비-대수응력 관계 및 시간-압축 관계에서 계측값과 매우 일치되는 경향성을 보였다.

Keywords

References

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