Marine wind turbine foundation for steel-concrete combined structure

Abstract

The invention provides a marine wind turbine foundation for a steel-concrete combined structure, consisting of a cylindrical foundation, a connecting tower, a pull rod, a support rod and a connecting rod. The cylindrical foundation is a reinforced concrete cylindrical structure with a sealed top cap, is embedded with pull rod connecting steel parts and metal rings, and is provided with a compartment separator; the connecting tower is a steel conical cylinder structure, is fixedly connected with the cylindrical foundation through the metal rings, and is fixedly connected with the wind turbine tower through flanges; and the pull rod, the support rod and the connecting rod are all used for connection and fixing of the cylindrical foundation and the connecting tower. The structure has the advantages that: the steel-concrete combined structure foundation can realize traction inflation towing through compartment flotation so as to save large towing machine tools and effectively reduce transportation cost; in construction, the foundation can be sunk in seafloor without suspension of a large hoisting boat and marine piling construction but only by utilizing negative pressure loading and side wall high-pressure inflation or water breaking ground; and the cylindrical foundation is manufactured by adopting reinforced concrete to process, which can reduce cost.

Description

Technical field [0001] The invention relates to a foundation structure of an offshore wind power generating set, which is a novel steel-concrete composite structure foundation foundation of an offshore wind power shocking set. 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 increase in the foundati...

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 infrastructure, the cost of foundation construction and offshore construction is high, resulting in a substantial increase in the investment cost of offshore wind turbine infrastructure compared with land foundations, 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 the combined structure of reinforced concrete cylindrical foundation and connecting towers has not been adopted, and due to tie rods and The use of support rods increases the force arm of the structure, which can effectively improve the ability of the structure to resist bending moments and improve the overall force performance of the structure

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