FEM analysis of jack-up spudcan penetration for multi-layered critical soil conditions

摘要

The results from FEM modeling with Abaqus or Elfen show that there is no punch through potential at the current location. The result from Abaqus Explicit shows a risk of rapid penetration for larger preload however Elfen results stand between the Abaqus results. The conventional analysis modified for the current layered soil profile shows a punch through risk close to the maximum preload. Although this analysis was modified based on our FEM experiences and field observations, it still gives a conservative evaluation of the current situation. The numerical results, combined with the visual evidence from the centrifuge testing and field monitoring allows for reassessment of the conventional methods of analysis.