Offshore wind power foundation consisting of single pile, cylindrical foundations and anchor cable

Abstract

The invention discloses an offshore wind power foundation structure consisting of a single pile, cylindrical foundations and an anchor cable. The offshore wind power foundation structure consists of a single pile, multiple cylindrical foundations and an anchor cable, wherein the cylindrical foundations are uniformly distributed on the circumference which takes the single pile as the center of a circle; the anchor cable is obliquely tensioned and is connected with the cylindrical foundations and the single pile; the anchor cable, the cylindrical foundations and the single pile are connected through welding; the included angle between the anchor cable and the single pile is between 30 and 60 degrees; and the top of the single pile is connected with a wind turbine tower through a flange plate. According to the technical scheme, a novel foundation type consisting of the single pile, the cylindrical foundations and the anchor cable is given, the anchor cable is connected with the cylindrical foundations and the single pile and is obliquely tensioned, the resistance of shallow soil on the earth surface is fully exerted, the bending moment resistance of the structure is enhanced, and the displacement of the pile body is reduced, so that the aim of reducing the diameter and thickness of the single pile is fulfilled.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power foundations, and more specifically relates to a new offshore wind turbine foundation type that combines multiple cylindrical foundations with single piles through anchor cables. Background technique [0002] As a green, clean and renewable energy, wind energy has been favored by energy developers in various countries. In the construction of offshore wind farms, infrastructure is the top priority. The offshore environment is complex and changeable, and the safety, economy and adaptability of the infrastructure are the key factors restricting the development of offshore wind power. [0003] There are various types of offshore wind power foundation structures, including multi-pile jackets, single piles, tripod foundations, gravity foundations, barrel foundations, and floating foundations. The most widely used foundation type is the single pile foundation. The monopile foundation is usua...

AI Technical Summary

Problems solved by technology

Due to its relatively small overall stiffness (softer), the displacement of the pile body is often large, and the structural dynamic response under the action of waves and wind loads is large, which is prone to fatigue damage or even failure

With the large-scale development of offshore wind power, the capacity of a single wind turbine is increasing, and 5MW or even larger units have been successfully developed. If the single pile type is used, the diameter and wall thickness of the pile will increase significantly, which will increase the cost. , which also increases the difficulty of construction

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