Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Estimation of Bearing Capacity of Non-Displacement Piles in Sand Considering Pile Shape

모래지반에서 말뚝형태를 고려한 비배토말뚝의 지지력 산정

  • 백규호 (관동대학교 토목공학과) ;
  • 이준환 (연세대학교 사회환경시스템공학부) ;
  • 김대홍 (한국전력공사 전력연구원)
  • Published : 2007.05.31
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Abstract

In order to investigate the effect of the pile shape on the bearing capacity of non-displacement piles, a series of model pile load tests were performed using a calibration chamber and three model piles with different shape. Results of the model tests showed that the bearing capacity of tapered piles was affected by its taper angle as well as the stress states and relative density of soil. Based on the results of model pile load tests, a new design equation for estimation of the bearing capacity of non-displacement piles was proposed, and it takes into account the effect of the taper angles on the bearing capacity of non-displacement piles.

말뚝의 형상이 비배토말뚝의 지지력에 미치는 영향을 규명하기 위하여 가압토조와 형상이 다른 세개의 모형말뚝을 이용해서 일련의 모형말뚝재하시험을 수행하였다. 시험결과에 따르면 테이퍼말뚝의 지지력은 지반의 응력상태와 상대밀도 뿐만 아니라 말뚝의 테이퍼 각도에도 영향을 받는 것으로 나타났다. 그리고 모형시험의 결과에 근거해서 비배토말뚝의 지지력을 예측할 수 있는 새로운 지지력 산정식을 제안하였으며, 그 제안식에는 말뚝의 테이퍼 각도가 지지력에 미치는 영향이 반영되었다.

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References

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