Response Evaluation of‏ ‏Different Pile-Soil- Structure ‎Interaction Models in Wind Turbine Offshore Structure

There are different soil-pile-structure interaction models that can affect on the response of offshore wind turbine structures. In this research, we tried to estimate the response of wind turbine offshore structures under tree different soil-pile-structure models which includes fixity level length with 2, 4, 6 and 8 times of pile diameter, stiffness matrix and independent springs and compared with more advanced and complete model of non-linear Winkler beam model. Results show the model of fixity level length with 8 times of diameter gives the best result among other models for axial loads in structural bracing elements and can be used as simplified pile-soil-structure interaction for wind turbine offshore structures.