ABSTRACT

Among a variety of basic forms of offshore wind turbines, the suction bucket foundation has the advantages of simple installation, short construction cycles, and cost-saving. This work aims at complicated sea condition that occurs in practical situations. Different simulation calculation models are designed and analyzed based on the previous experimental results. Based on the simulation results, the bearing characteristics of the suction bucket foundation structure under different working conditions are compared, and it can be found that the resistance load is weakened when the angle between two loads is 5°. The results provide a reference for the design of the suction bucket foundation structure and offshore wind farms.

INTRODUCTION

In order to reduce the burden of land resource usage and cope with environmental deterioration, countries around the world have turned their attention to the ocean. In the past 30 years, with the increasing total consumption of renewable energy, the development of Marine science and technology and the exploitation of Marine resources have become the inevitable strategic trend of the countries bordering the sea.

The suction bucket foundation is a new type of foundation for offshore structures, which has been gradually applied to offshore wind power in recent years. The suction barrel is buried in the soil depending on the pressure difference generated by the suction. After installation, the pressure difference will gradually disappear, and it still relies on the resistance of the surrounding soil to carry the load. Because of its low cost, simple structure, easy installation, short construction time, and suitability for all kinds of soil, the bucket foundation has attracted the attention of research scholars, and there is a trend of large-scale application in offshore wind farms, the common style of the bucket foundation is shown in Fig. 1.

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