In this paper, we evaluate the applicability of p-y curve on the lateral behavior of monopile foundations as compared with FEM 3D models and present safety factors in case p-y curve method is used to investigate the lateral behavior of monopile foundations for 5MW offshore wind turbines in Korea.

In this paper, we analyze the lateral behavior of a jacket substructure for offshore wind turbine embedded in sandy soil, and identify the differences of results by soil modeling methods that are fixed end method, coefficient of subgrade reaction method, coupled matrix method, and p-y, t-z, q-z curve methods.

This study proposed a hybrid floating structure which is expected to have better structural behavior than general pontoon type structure. Using structural analysis, the performance of the structure was investigated. We tried to find the optimal system of this hybrid floating structure system.