New development of cost-efficient multi-pile concrete foundation (MCF) for offshore wind turbine

A hybrid type of cost-efficient supported structure combined with concrete cone and steel shaft has been developed for wind turbine farms. A new type of structure which is supported by driven piles, termed Multi-pile Concrete Foundation (MCF), is suggested. Finite element analyses for support structures under hydrostatic load are carried out, using both a shell and frame element of the XSEA program. The Morrison equation with three dimensional wave load is applied in XSEA simulation software, which are particularly directed at concrete structures. The optimized structures based on the preliminary design concept resulted in an efficient structure, which reasonably reduces fabrication costs