Pull-out performance of finned suction anchors in sand considering torsional effect
Pull-out performance of finned suction anchors in sand considering torsional effect
When the suction anchor is subjected to torsional load due to imprecise installation or deviations of mooring line caused by current forces, it significantly reduces the pull-out capacity, thereby posing potential risks to floating structures. However, there is a dearth of relevant studies investigating scenarios involving torsional load and anti-torsion solutions. Therefore, this paper aims to enhance the anti-torsion pull-out performance in sandy seabed through a novel design incorporating finned suction anchors. Three-dimensional finite element analyses are conducted using the advanced SIMSAND model for sand constitutive behaviour. A comprehensive parametric study is performed to examine the influence of fin number, width, length, and length-width ratio on pull-out capacity and failure mechanisms. Based on these analyses, optimal fin configurations are discussed considering material costs, and a case study is presented illustrating the process of configuration optimization. These findings can contribute towards addressing issues related to torsional loads in research and design practices.
M. H. Zhang; Y. Fu; Z. Yin
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
13 - Developmental foundation and anchoring concepts: hybrid foundations, ring anchors, helical piles, torpedo, shared anchoring
https://doi.org/10.53243/ISFOG2025-405
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