Geomechanics and Engineering

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Performance of novel dynamic installed anchors during installation and monotonic pullout

  • Kim, Youngho (Centre for Offshore Foundation Systems (COFS), The University of Western Australia) ;
  • Rosher, Lachlan Thomas (Centre for Offshore Foundation Systems (COFS), The University of Western Australia)
  • Received : 2018.11.13
  • Accepted : 2019.05.13
  • Published : 2019.06.10
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Abstract

This paper examines the results from three-dimensional dynamic finite element analysis undertaken to develop a new dynamically installed anchor (DIA). Several candidate shapes of new DIAs were selected after an investigation into previous researches of existing DIA designs. The performances of selected DIAs during the installation and loading in non-homogeneous clay were investigated through large deformation finite element (LDFE) analyses. Findings were compared to the current anchors in operation (i.e., Torpedo and Omni-Max DIA) to assess the viability of the new designs in the field. Overall, the anchor embedment depths of the novel DIAs lied under the results of OMNI-Max DIA. And also, the tracked anchor trajectory confirmed that, the novel DIAs dove deeper with stiffer travelling angle, compared to the OMNI-Max DIA. These elements are more critical and beneficial especially in a field where the achieved embedment depths are generally low.

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References

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