Abstract

본 연구에서는 수치해석 방법을 통하여 점성토, 사질토, 그리고 점성토와 사질토의 혼합지반에 대하여 상부, 중간, 하부의 하중 작용위치에 따른 석션기초의 극한 수평저항력 및 거동을 분석하였다. 해석결과 지반조건에 관계없이 중간 위치에 재하시 가장 큰 수평저항력을 발휘하는 것으로 나타났으며, 사질토층의 극한저항력이 점성토층이나 점성토-사질토층에 비해 상대적으로 큰 값을 나타내었다. 그리고 석션기초의 이동량과 회전량 분석결과 석션기초의 이동량은 재하위치와 지반조건 모두에 대해 영향을 받지만, 회전량은 지반조건에 관계없이 재하위치에 가장 큰 영향을 받는 것으로 나타났다. Numerical analyses were performed to analyze the behavior of a suction pile under lateral loads with different soil layer conditions (uniform clay layer, uniform sand layer, and multi layers consisting of clay and sand layers) and different loading locations (top, middle, and bottom of the suction pile). The results of the analyses revealed that, regardless of the soil layer conditions, the lateral resistances at the loading location of the middle of the suction pile were the maximum. For the given loading locations, the lateral resistances of the suction pile for the uniform sand layer were relatively higher than those for the multi layer. By analyzing translations and rotations of the suction pile, it was identified that the amount of translation was highly dependent on both the soil layer condition and the lateral loading location while the rotated angle varied significantly with the lateral loading location, but not much with soil layer condition.

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