In order to assure the safety of different construction conditions of composite bucket foundations (CBF) for offshore wind turbines, the bearing capacity and the force transfer mechanism of the whole foundation are analyzed, considering the entire construction process are completed onshore. The key phrase of the prefabricated process and construction control method are listed. On the basis of clarifying the whole construction and installation process of the CBF, the onshore construction technology is mainly introduced and analyzed. Because of the CBF is a steel-concrete composite structures, and the configuration is irregular, the proper construction technology should be taken to avoid quality and safety issues. The results show that: The external and internal support system and the prestressing tension are essential parts of the construction procedure; as a result, a reasonable construction method is necessary for the sake of safety. It is of essential importance to propose some structural measures to achieve better overall stability during the manufacture of the steel bucket shirt. Because of the higher stress of the lifting point, its location needs to be arranged reasonably. The on-land fabrication of the offshore wind turbine with a composite bucket foundation can be achieved by using a reasonable controlling method of safety and quality, to guarantee the safety of the mechanical behavior. From the manufacturing process of two prototype CBF, this entire construction technology which described in this paper can better meet the quality requirements of CBF, and can also meet the needs of mass prefabrication.
A wide range of haze phenomena occurred in many parts of the world frequently, behind it is the increasing demand for energy from mankind and the huge pollution caused by the fossil fuel, this further promote the development of new renewable energy sources. Wind energy is a green new energy, especially offshore wind power has great development potential, many countries have begun to vigorously develop offshore wind power projects (Yu H et al.,2015).
