Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Analysis of Load Capacity and Deformation Behavior of Suction Pile Installed in Sand

모래지반에 근입된 석션파일의 인발저항력 및 변위거동 분석

  • Kim, You-Seok (Institute of Construction Technology, DAEWOO Engineering & Construction Co. Ltd.) ;
  • Jang, Yeon-Soo (Dept. of Civil and Environmental System Engineering, Dongguk University)
  • 김유석 (대우건설기술구원) ;
  • 장연수 (동국대학교 공과대학 건설환경공학과)
  • Received : 2011.03.30
  • Accepted : 2011.11.07
  • Published : 2011.11.30
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Abstract

A series of centrifuge model tests to investigate the suction pile pullout loading capacity in sand have been performed. The main parameters that affect the pullout loading capacity of a suction pile include the mooring line inclination angle and the padeye position of the suction pile. With respect to the padeye position, the maximum pullout loading capacity is obtained when the padeye position is near 75% of the pile length from the top. The direction of the pile rotation changes when the padeye position reaches somewhere near 50~75% for all mooring line inclination angles. The translation displacement of suction pile to develop the time of maximum pullout loading capacity decreased as the mooring line inclination angle increased. In addition, the vertical displacements of the center of a suction piles for all cases appeared to develop toward the ground surface.

모래지반에서 석션파일의 최대인발저항력 산정을 위한 일련의 원심모형실험이 수행되었다. 최대인발저항력 산정을 위한 실험인자인 석션파일의 인발각과 인발작용점의 위치에 대하여 실험을 수행하였다. 인발작용점의 경우 75%에서 최대인발저항력이 관찰되었다. 모든 경사각에 대하여 전체파일 높이에서 50%에서 75%사이에 석션파일의 회전각이 변함을 알 수 있었다. 인발각이 증가함에 따라 최대 인발저항력 발생 시까지의 변위가 점점 작아짐을 알 수 있었다. 석션파일의 형상중심의 수직변위를 최대인발저항력이 작용한 시점에서 관찰한 결과 모두 지표 쪽으로 이동한 것을 알 수 있었다.

Keywords

References

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