Analysis of modified suction anchors under monotonic inclined pull-out load in silty sand사질토 지반에 설치된 개량형 석션앵커에 대한 경사 인발 거동 분석

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dc.contributor.advisorCho, Gye-Chun-
dc.contributor.authorDong, Yihe-
dc.description학위논문(석사) - 한국과학기술원 : 건설및환경공학과, 2021.8,[ix, 103 p. :]-
dc.description.abstractWith the increase in the volume and weight of offshore floating structures, the requirements for using the suction anchor as a basis have increased. During the past few years, several methods have been used to modify the regular suction anchors, thus can reach a better performance. This study employed two distinctly modified suction anchors (MSA-H and MSA-HV) in a series of 60-g centrifuge tests and Abaqus simulations to verify the influence of a horizontal outer skirt or horizontal–vertical combined skirt for improving the inclined pull-out capacities but decreasing the displacement of RSA. The 60°-inclined centrifuge test results demonstrated that both MSA-H and MSA-HV improved the capacities of RSA. A horizontal skirt mobilized a relatively higher moment bearing capacity for the rotational behavior. Moreover, this study found that the different improvements in the inclined pull-out capacity and the moment bearing capacity originated from the different movement combinations of the different anchor shapes. The higher inclined pull-out capacity of MSA-HV came from a more significant portion of translation, while the higher moment capacity of MSA-H resulted from a larger percentage of rotation. For parametric studies in this study on ultimate bearing capacities, totally 102 Abaqus simulations were conducted at five loading points of RSA and MSA-H, and at seven loading points of MSA-HV under six inclinations varying from 0° to 90°. The test results showed that the optimum loading point of the three anchors are different, and the improvement of ultimate capacities of MSA-HV is the most apparent. Also, the failure envelopes are drawn of the three anchors to show the improvements of the ultimate bearing capacities of horizontal and vertical components.-
dc.subjectmodified suction anchor▼ainclined monotonic load▼aultimate bearing capacity▼arotational behavior▼aoptimum loading point▼acentrifuge test▼aAbaqus numerical analysis-
dc.subject개량형 석션 앵커▼a정적 경사 하중 실험▼a최대 지지력▼a회전 거동▼a최적의 하중 재하점▼a센트리퓨지 모델 실험▼aABAQUS 수치 해석-
dc.titleAnalysis of modified suction anchors under monotonic inclined pull-out load in silty sand-
dc.title.alternative사질토 지반에 설치된 개량형 석션앵커에 대한 경사 인발 거동 분석-
dc.description.department한국과학기술원 :건설및환경공학과,-
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