Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.apor.2016.12.011
Title: Behavior of drag anchor in clay with linearly increasing shear strength under unidirectional and combined loading
Authors: Wu, X 
Chow, YK 
Leung, CF 
Issue Date: 1-Feb-2017
Publisher: Elsevier BV
Citation: Wu, X, Chow, YK, Leung, CF (2017-02-01). Behavior of drag anchor in clay with linearly increasing shear strength under unidirectional and combined loading. Applied Ocean Research 63 : 142-156. ScholarBank@NUS Repository. https://doi.org/10.1016/j.apor.2016.12.011
Abstract: Drag anchor is a widely used economical anchor option for offshore floating structures. The anchor behavior under unidirectional loading and combined loading is important for anchor selection. The anchor behavior under combined loading, characterized by the yield envelope, can also be used for the prediction of anchor installation, which is still an issue in anchor design. However, most existing studies on anchor capacity are for plate anchors which focused only on the anchor pullout capacity in soil with uniform shear strength. The behavior of drag anchor under unidirectional and combined loading in soil with linearly increasing shear strength profile is seldom investigated. The current 2D finite element studies investigate the anchor behavior for a horizontal anchor fluke in clay with linearly increasing shear strength under unidirectional vertical, horizontal and rotational loadings first. Then based on the results of anchor unidirectional loading behavior, the yield envelopes for anchor under combined loading for both shallow and deep embedded flukes are studied. The effect of anchor embedment depth, soil non- homogeneity, soil overburden pressure and the soil/anchor interface breakaway conditions are studied to provide insight for drag anchor design.
Source Title: Applied Ocean Research
URI: https://scholarbank.nus.edu.sg/handle/10635/210954
ISSN: 01411187
DOI: 10.1016/j.apor.2016.12.011
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