Uplift Capacity of a Plate Anchor Considering Suction Effects |
Seo Young-Kyo,Kim Tae-Hyung |
Division of Ocean Development Engineering Korea Maritime University,Division of Civil & Environmental Engineering Korea Maritime University |
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© 2008 The Korean Society of Ocean Engineers
Open access / Under a Creative Commons License
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Keywords:
Plate anchor, Uplift capacity, Suction force, Clays, Failure modes, Breakout factor, Finite element method |
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 andchor and affects the uplift capacity of anchor. To estimate the uplift capacity of the andchor accurately, the failure mechanisms of the andchor 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 andchor 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 andchors are also presented. |
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