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Numerical Analysis on the Ultimate Bearing Capacity and Failure Mechanism of a Novel Umbrella-Shaped Anchor
Author(s): 
Pages: 76-81
Year: Issue:  1
Journal: Ocean Technology

Keyword:  particle flowumbrella-shaped anchorbearing capacityfailure mechanism;
Abstract: The bearing capacity of anchor foundations directly affects the stability of marine floating structures, so it is a critical issue to study novel anchoring techniques with higher performance in the design of marine engineering structures. Based on the sandy soil behavior of liquefaction under cyclical loading, a novel umbrella-shaped anchor(NUSA) is proposed to improve the bearing capacity by taking advantage of the soil at the bottom end of the anchor pile. The installation and bearing capacity of NUSA are investigated by using two-dimensional numerical particle flow programs, and the efficiency of NUSA is verified by comparing with that of traditional anchor pile. The improved bearing capacity is analyzed from the microscopic prospect by comparing the difference between the soil failure mechanism around the NUSA and that of the traditional anchor pile. The results show that the material cost and installation difficulty can be reduced drastically with the use of umbrella-shaped anchor under the same bearing capacity. It is beneficial to study and apply the technique of NUSA in marine engineering.
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