Offshore wind power project steel pile foundation and construction method thereof

Abstract

The invention discloses an offshore wind power project steel pile foundation and a construction method thereof. The offshore wind power project steel pile foundation comprises a central steel pile driven into a designated sea area, and the central steel pile is sequentially sleeved with a bottom support and an outer pile sleeve, wherein the bottom support slides down along the central steel pile and makes contact with the seabed, the lower end of the outer pile sleeve presses the bottom support, and the upper end of the outer pile sleeve is connected with a fan tower. Construction of the offshore wind power project steel pile foundation is completed through the steps of driving in the steel pile, sleeving the steel pile with the bottom support and the outer pile sleeve, connecting the fan tower, and the like. The central steel pile does not bear the vertical load of an upper structure, the vertical load is separated from the horizontal load, and thus the diameter and length of the central steel pile can be greatly reduced, the weight of a pile body is greatly reduced, and the construction difficulty is lowered; and all components are relatively low in weight, large hoisting and transporting equipment is not needed, the construction cost is lowered, and construction of an intertidal zone wind power project is facilitated.

Description

[0001] Technical field: [0002] The invention relates to the field of offshore wind power engineering, in particular to an offshore wind power engineering steel pile foundation and a construction method thereof. [0003] Background technique: [0004] As a green and clean energy, offshore wind power has been favored by various countries due to its advantages such as abundant resources, stable wind speed, less negative impact on the environment, less visual interference, and large-scale development. The foundation types of offshore wind farms mainly include: gravity foundation, single pile foundation, tripod foundation, jacket foundation, multi-pile foundation, etc., among which single pile foundation is the most widely used foundation form. Among the nearly 2,000 foundations of European offshore wind power projects, 70% are monopile foundations. [0005] The monopile foundation of offshore wind power has the characteristics of simple manufacture and no need to tidy up the sea...

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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