Triangular steel pile foundation of offshore wind power engineering and construction method of delta-shaped steel pile foundation

Abstract

The invention discloses a square-shaped steel pile foundation of an offshore wind power project and a construction method thereof, which comprises three steel piles driven into a designated sea area and distributed in a square-shaped shape. The three steel piles are inserted into a fixing frame and sunk into the seabed. The supporting plate and the pile outer sleeve are sequentially inserted into the root steel pile, and the supporting plate is sunk into the sea and pressed on the fixed frame. The pile outer sleeve is sequentially connected by a bottom section of the sleeve, multiple standard sections of the sleeve, and a top section of the sleeve. Composition, the bottom section of the sleeve of the pile outer sleeve is pressed on the supporting plate, and the upper end of the sleeve top section of the pile outer sleeve is connected to the fan tower; through designing various components, driving steel piles, inserting into the fixing frame supporting plate, Steps such as pile outer sleeve and connection to fan tower are completed. The three steel piles of the present invention do not bear the vertical load of the superstructure, and the separation of the vertical load and the horizontal load makes the diameter and length of the steel piles greatly reduced, the weight of the pile body is greatly reduced, and the weight of each individual component is relatively small , without large lifting and transportation equipment, convenient for construction work.

Description

[0001] Technical field: [0002] The invention relates to the technical field of offshore wind power engineering, in particular to a pin-shaped steel pile foundation for offshore wind power engineering and a construction method thereof. [0003] Background technique: [0004] As a green and clean energy, offshore wind power has always been favored by countries due to its abundant resources, stable wind speed, less negative impact on the environment, less visual disturbance, and large-scale development. The foundation types of offshore wind farms mainly include: gravity foundation, monopile foundation, tripod foundation, jacket foundation, multi-pile foundation, etc., among which monopile foundation is the most widely used foundation form. Of the nearly 2,000 foundations for offshore wind power projects in Europe, 70% are monopile foundations. [0005] The offshore wind power monopile foundation has the characteristics of being simple to manufacture and does not need to arrange...

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the traditional single pile foundation has the characteristics of large diameter, large length and heavy weight, and requires large lifting and transportation equipment, making construction difficult

However, the resources of large-scale lifting and transportation equipment at sea are very limited, and the water level in the intertidal zone cannot be used by large-scale construction ships, so the construction of single-pile foundations is limited by many factors, and the construction efficiency is low.

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