Dynamics of Hyperloop infrastructure and soil-structure interaction
The resonance frequencies of offshore wind turbines measured in the field typically differs significantly from the predicted one. In addition to that, they depend significantly on the wind speed. To get accurate predictions of the resonance frequencies as well as of the responses of the wind turbines to environmental loads (wind, waves, earthquakes) – which enables, for example, realistic fatigue damage prediction – soil properties need to be determined in situ, and the interaction between the structure and the soil needs to be modeled in an accurate manner.
Research focus
- In-situ identification of nonlinear (i.e., strain-dependent) and frequency-dependent soil properties (stiffness and damping) relevant for soil-structure interaction models using linear and nonlinear wave methods
- Formulation of 3-D models to describe the dynamic interaction of offshore wind turbine support structures with surrounding soil
- Formulation of practical, 1-D design models that combine computational speed with accuracy (i.e., cover the 3-D character of the soil-structure interaction)
- In-situ validation of model predictions
Industry Partners
Siemens Gamesa Renewable Energy, Fugro, Deltares
Contact
Typical 1-D design model for offshore wind turbine support structure
In-situ dynamic testing of monopile structure in the IJsselmeer