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- W2552641333 abstract "Soil anchors are required to withstand uplift or lateral forces acting on the foundations of structures constructed both in land and offshore sites. Plate anchoring system is being increasingly used to moor floating structures for the exploration and development of oil and gas fields. In this study, various experimental, theoretical and numerical approaches for estimation of pullout capacity of horizontal and inclined plate anchors in clayey soils are reviewed. A comparative analysis of the ultimate capacity is then carried out for plate anchors embedded in clayey soils by varying embedment ratio for horizontal anchors and by varying inclination angle for inclined plate anchors. Several structures such as transmission towers, suspension bridges, submerged pipelines and floating offshore platforms involve generation of uplift forces. Earth-retaining walls and waterfront structures are subjected to horizontal forces. Conventional foundations are unable to take this type of loading, and soil anchoring systems are required to resist the pullout forces. They can be plate anchors, helical anchors, pile anchors, grouted anchors and drilled shafts. For the design of these anchoring systems, it is necessary to estimate the ultimate pullout capacity. Plate anchors are now widely used as a simple and economical mooring system for offshore floating facilities. The loading applied on plate anchors can be vertical, inclined or horizontal depending on the anchor orientation. They can be circular, square or strip in shape, and are usually made of steel plates or concrete slabs. As the range of applications for plate anchors increases, a greater understanding of the response to loading is essential. If the failure mechanism is not clear, both model and field tests are needed for the formulation of design procedures. In the last four decades, a number of researchers have proposed different approaches to estimate the pullout load-deformation response of plate anchors of various shapes in clayey soils. They are based on model tests, on limit equilibrium analysis, or on rigorous numerical analysis. The capacity of plate anchors against pullout is obtained from a combination of soil weight above and shear resistance mobilized within a failure surface or a defined boundary in the soil mass. The effects of anchor shape, embedment depth, inclination, soil unit weight, and soil shear strength non-homogeneity on the pullout capacity have been investigated. The design of these anchors in clays is usually for undrained conditions. In this study, they are summarized in terms of the procedures and relationships for determining pullout capacity. The static ultimate pullout capacity for both horizontal and inclined plate anchors embedded in clayey soils is worked out by using the various approaches, and the computed results are presented and compared." @default.
- W2552641333 created "2016-11-30" @default.
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- W2552641333 date "2011-01-01" @default.
- W2552641333 modified "2023-09-24" @default.
- W2552641333 title "PULLOUT CAPACITY OF HORIZONTAL AND INCLINED PLATE ANCHORS IN CLAYEY SOILS" @default.
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