The capacities of tripod bucket foundation under uniaxial and combined loading

Tripod bucket foundations are an alternative foundation for offshore wind turbines. Three-dimensional finite element analyses were carried out to determine the capacities of tripod bucket foundations in clay under uniaxial and combined loading. The undrained shear strength of clay is assumed to increase linearly with depth, and the remolded soil around the bucket and reduced foundation-soil friction caused by bucket penetration are modeled through an adhesion factor. Based on the numerical results, expressions for uniaxial capacity factors and failure loci are proposed, as functions of soil non-homogeneity, aspect ratio and bucket spacing ratio. It is found that the failure loci of tripod bucket foundations are similar to that of conventional buckets in mathematic expression, although the bucket spacing ratio that appears in uniaxial capacities is used as a key fitting parameter.

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  • English

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  • Accession Number: 01760692
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 29 2020 3:08PM