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Uplift Capacity of a Plate Anchor Considering Suction Effects

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참고문헌

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주제분류해양공학

초록

Anchors have been commonly used to as foundation systems of the structures that require the uplift resistance. Recently anchors have been used in ocean sediment for mooring systems to stabilizeoffshore structures. In the saturated clayey soil however, suction developed between the soil and anchor and affects the uplift capacity of anchor. To estimate the uplift capacity of the anchor accurately, the failure mechanisms of the anchor by the uplift force should also be correctly assumed. The uplift capacity is usually expressed in terms of breakout factors with respect to embedment ratio. In this paper, a two-dimensional plane strain numerical investigation into the vertical uplift capacity of a plate anchor in a clayey soil is described. The breakout factor against their corresponding values of embedment ratio was calculated and plotted along a single curve. The modes of failure mechanism at shallow and deep anchors are also presented.

Abstract

Anchors have been commonly used to as foundation systems of the structures that require the uplift resistance. Recently anchors have been used in ocean sediment for mooring systems to stabilizeoffshore structures. In the saturated clayey soil however, suction developed between the soil and anchor and affects the uplift capacity of anchor. To estimate the uplift capacity of the anchor accurately, the failure mechanisms of the anchor by the uplift force should also be correctly assumed. The uplift capacity is usually expressed in terms of breakout factors with respect to embedment ratio. In this paper, a two-dimensional plane strain numerical investigation into the vertical uplift capacity of a plate anchor in a clayey soil is described. The breakout factor against their corresponding values of embedment ratio was calculated and plotted along a single curve. The modes of failure mechanism at shallow and deep anchors are also presented.

참고문헌 (13)

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  2. Ali, M., "Pullout Resistance of Anchor Plates in Soft Bentonite Clay", 석사, pp.1968
  3. 배우석, "파이프형 앵커의 인발거동에 대한 연구", 한국지반환경공학회 논문집, 9(1), pp.5~10 (2008), 한국지반환경공학회
  4. Bang, S.T., "The Method Estimating Group Effects with Small Pullout Tests of Screw Anchors", Conference paper 2003, Korean Geo-Environ. Society, pp.219~225 (2003)
  5. Bhatnagar, R.S., "Pullout Resistance of Anchors in Silty Clay", 석사, pp.1969
  6. Das, B.M., "Model Tests for Uplift Capacity of Foundations in Clay", Soils and Found. Japan, 18(3), pp.17~24 (1978)
  7. Das, B.M., "Earth Anchors" (2001), J. Ross Publishing
  8. Kuferman, M., "The Vertical Holding Capacity of Marine Anchors in Clay Subjected to Static and Cyclic Loading", 석사, pp.1971
  9. Merifield, R.S., "Stability of Inclined Strip Anchors in Purely Cohesive Soil", J. of Geotech. and Geoenviron. Engrg., 131(6), pp.792~799 (2005)
  10. Merifield, R.S., "The Ultimate Pullout Capacity of Anchors in Frictional Soils", Canadian Geotechnical Journal, 43(8), pp.852~868 (2006)
  11. Merifield, R.S., "Stability of Plate Anchors in Undrained Clay", Geotechnique, 51(2), pp.141~153 (2001)
  12. 박시삼, "나선형 앵커의 실내인발시험을 이용한 무리효과 평가기법", 한국지반공학회논문집, 21(10), pp.123~131 (2005), 한국지반공학회
  13. Vermeer, P.A., "PLAXIS User Manual Version 6.1", ~ (1995)

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