Coordinateurs du projet
Context
The footprint of floating wind turbine anchor lines is a significant issue for the overall acceptability of the technology (e.g., navigability). In addition, the movements of the wind turbine are transmitted to the foundations in the form of non-permanent “cyclical” stress.
The aim of this project is to gain a better understanding of how certain innovative deep foundation anchors of different geometries (driven piles, screw piles, suction piles, depending on the nature of the seabed (sand or normally consolidated clay)) behave under repeated loading (tension), thereby reducing the footprint of the anchor lines.
To this end, a targeted campaign of experiments on physical models in a centrifuge will be carried out in order to observe and understand the behavior of this type of structure and to establish an experimental database. The results can then be compared with existing design methods.
Scientific breakthroughs and innovation
- Conduct parametric studies on centrifuged scale models and establish an experimental database for certain types of instrumented anchors (e.g., open piles, helical piles) in certain target soils.
- Compare the results with existing design methods and identify a relevant deterministic model.
- Take soil variability into account in the identified deterministic model.
Expected technical and economic impact
- Optimize the sizing of floating wind turbine anchors.
- Reduce the environmental footprint of anchors.
Demonstrator
- Development of a mixer for open piles in a centrifuge.
- Device for installing helical piles in a centrifuge.
- Creation of an experimental database.