Offshore wind power unit foundation adopting prestressed concrete cylindrical structure

Abstract

The invention discloses an offshore wind power unit foundation using a prestressed concrete cylindrical structure, consisting of a cylindrical foundation, prestressed cross beams and a connecting stepped drum, wherein the cylindrical foundation is in a reinforced steel bar concrete cylindrical structure and internally provided with clapboards for separating a bin; the prestressed cross beams are arranged on a sealing coping of the cylindrical foundation and radially and evenly distributed; the connecting stepped drum is in a prestressed concrete cylindrical structure; the lower end of the connecting stepped drum, the reinforced steel bar concrete cylindrical foundation and the prestressed cross beams are poured into a whole; metal rings are arranged on the joint parts; and a flange plate is arranged at the upper end of the connecting stepped drum and fixedly connected with the stepped drum of an electric generating set. The invention has the advantages that: the offshore wind power unit foundation has simple structure, convenient construction, small construction quantity, low construction cost and favorable load-carrying capability, and can be prefabricated on land and reach the construction position by traction, towing and floating so as to reduce the transportation cost; and with the prestressed concrete structure, the invention can effectively improve the structural strength, reduce the dead weight of the foundation, save materials and improve the durability and the corrosion resistance of the structure.

Description

Technical field [0001] The invention relates to a foundation structure of an offshore wind power generating set, in particular to a foundation foundation of an offshore wind generating set adopting a prestressed concrete cylindrical structure. Background technique [0002] At present, the structural types of foundation foundations for offshore wind turbines are usually single pile foundations, multi-pile foundations or gravity foundations. The gravity foundation is generally a reinforced concrete structure or a mixed structure of reinforced concrete and ballast, which has high requirements on the load-bearing foundation, and also involves complex offshore construction, which is greatly affected by the climate and has high costs. The single-pile and multi-pile foundations are pile-driven supporting piles, which require special anti-corrosion, strength and toughness requirements, and expensive offshore piling equipment is required during construction, which leads to an increas...

AI Technical Summary

Problems solved by technology

The gravity foundation is generally a reinforced concrete structure or a mixed structure of reinforced concrete and ballast, which has high requirements for the load-bearing foundation, and also involves complex offshore construction, which is greatly affected by the climate and the cost is high

The single-pile and multi-pile foundations are pile-driven supporting piles, which require special anti-corrosion, strength and toughness requirements, and expensive offshore piling equipment is required during construction, which leads to an increase in the foundation cost of offshore wind turbines

[0003] Using the above traditional offshore wind turbine foundation structure, its foundation construction and offshore construction costs are high, resulting in a substantial increase in the investment cost of the offshore wind turbine foundation foundation compared with the land foundation, thus limiting the development of offshore wind power

For the cylindrical foundation, at present, all-steel cylindrical foundations have been adopted in foreign countries, and the structural types adopted include single-tube and multi-tube types, but there is no case of using a fully prestressed concrete cylindrical foundation

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