CN204610156U - Offshore wind turbine single-pile foundation integrated form accessory structure - Google Patents

Abstract

The utility model relates to an integrated auxiliary structure of a single pile foundation of an offshore fan. The purpose of this utility model is to provide an integrated auxiliary structure of single pile foundation for offshore wind turbines with simple structure and convenient construction, so as to reduce the difficulty of installation of auxiliary components, save the time of offshore construction work, and eliminate the risk of piling damage of auxiliary components. The technical scheme of the utility model is: the accessory structure of the utility model is integrally set on the single pile foundation, and supported on the preset support bracket on the surface of the lower pile of the single pile foundation; the accessory structure includes the fan outer platform, the cable protection pipe, the Collision system, sacrificial anode and several ring beams that can be set on the single pile foundation. The ring beams are arranged concentrically and coaxially at a certain distance from the ring beams. The cable protection pipes, The anti-collision system and several ring beam support rods are connected as a whole; the sacrificial anode is welded on the lowermost ring beam or the lower part of the ring beam support rod. The utility model is suitable for the offshore wind power generation industry.

Description

Integrated auxiliary structure of offshore wind turbine monopile foundation

technical field

The utility model relates to an integrated auxiliary structure of a single pile foundation of an offshore fan. Suitable for offshore wind power industry.

Background technique

With the maturity of wind power generation technology, the way of increasing energy supply by relying on wind power generation is gradually favored by countries all over the world. The vast ocean has long attracted people's attention because of its abundant and stable wind energy resources. my country has a long coastline, and the sea area is rich in wind energy resources. At present, coastal provinces such as Hebei, Shandong, Jiangsu, Zhejiang, Shanghai, Guangdong, and Fujian have formulated offshore wind power development plans, and Jiangsu Province has an offshore wind farm demonstration project Start construction and put into operation for power generation.

As the most widely used foundation type in offshore wind power projects, monopile foundation has simple structure, fast construction and high cost performance; steel pipe piles with a diameter of 4-6m are generally used to vertically drive into the seabed, and pass through the transition section and the upper wind turbine. The tower is connected, and the transition section and the steel pipe pile are connected by high-strength grouting materials. After several years of on-site monitoring, it has been found that there are unfavorable phenomena such as voids and vertical displacements between the high-strength grouting materials and the transition section of the single-pile foundation of some offshore wind turbines abroad, and there are certain potential safety hazards.

In order to avoid engineering safety risks caused by connection failure of high-strength grouting materials, the applicant invented a single-pile offshore wind turbine foundation structure without transition section (patent number: ZL 2012 1 0114192.X), which eliminates the transition It not only has the advantages of simple structure, fast construction, and high cost performance, but also eliminates the risk of failure of the connection between high-strength grouting materials and steel pipe piles; the disadvantage is that the anti-collision system, cable pipes, sacrificial anodes and other auxiliary components are welded on the main body Structurally, it is difficult to install and easy to cause piling damage.

Contents of the invention

The technical problem to be solved by the utility model is: aiming at the above-mentioned existing problems, to provide an integrated auxiliary structure for offshore wind turbine monopile foundations with simple structure and convenient construction, so as to reduce the difficulty of installing auxiliary components, save the time of offshore construction operations, and eliminate the need for auxiliary structures. Risks such as pile driving damage of components.

The technical scheme adopted by the utility model is: an integrated auxiliary structure of single pile foundation for offshore wind turbines, which is characterized in that the auxiliary structure is integrated on the single pile foundation and supported on the preset support on the pile surface of the lower part of the single pile foundation on the corbel;

The auxiliary structure includes the outer platform of the wind turbine, the cable protection pipe, the anti-collision system, the sacrificial anode and several ring beams that can be set on the single pile foundation. Between the ring beam and the outer platform of the fan are connected as a whole through the cable protection pipe, the anti-collision system and several ring beam support rods; the sacrificial anode is welded on the lowermost ring beam or the lower part of the ring beam support rod.

The gap between the ring beam and the single pile foundation is filled tightly with several wedge-shaped steel sheets.

The beneficial effects of the utility model are: 1) The utility model integrates the auxiliary components such as the anti-collision system, the outer platform of the fan, the cable protection pipe and the sacrificial anode through the ring beam and the ring beam support rod, which reduces the installation difficulty of the auxiliary components and reduces the The offshore construction operation time is shortened, the offshore hoisting cost is reduced, and the economic benefit is obvious; 2) The utility model can effectively avoid the vibration damage of the auxiliary components of the pile body during the piling process, and is especially suitable for single pile foundations without transition sections.

Description of drawings

Fig. 1 is the structural representation of embodiment.

Fig. 2 is a sectional view along line A-A of Fig. 1 .

Fig. 3 is a B-B sectional view of Fig. 1 .

Detailed ways

As shown in Figures 1 to 3, this embodiment is an integrated auxiliary structure for an offshore wind turbine monopile foundation, and the auxiliary structure includes an outer platform 3 of the wind turbine, a cable protection pipe 5, an anti-collision system 6 (including a ladder), and a sacrificial anode 8 And four ring beams 7 that can be sleeved on the monopile foundation 2. The ring beam 7 is arranged concentrically and coaxially with the ring beam 7 at a certain distance, and the fan outer platform 3 is arranged concentrically and coaxially above the ring beam 7, in this example, between the ring beam 7 and between the ring beam and the fan outer platform 3 The cable protection pipe 5, the anti-collision system 6 and several ring beam support rods 4 are connected as a whole. In this embodiment, the sacrificial anode 8 is welded to the lowermost ring beam 7 according to the water depth.

In this example, the auxiliary structure is integrally hoisted on the monopile foundation 2 and supported on the supporting corbel 9 pre-set on the pile surface of the lower part of the monopile foundation 2 . After the hoisting is completed, the gap between the ring beam 7 and the single pile foundation 2 is filled tightly with wedge-shaped steel sheets to prevent the integrated auxiliary structure from rotating.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples. Those of ordinary skill in the art, within the scope of the present utility model, make changes, additions or replacements, which should belong to Protection scope of the present utility model.

Claims (2)

1. An integrated subsidiary structure of a single pile foundation for offshore wind turbines, characterized in that the subsidiary structure is integrally fitted on the single pile foundation (2) and supported on the preset supporting corbel on the surface of the lower pile of the single pile foundation (2) (9) on; The auxiliary structure includes the fan outer platform (3), cable protection pipe (5), anti-collision system (6), sacrificial anode (8) and several ring beams (7) that can be set on the monopile foundation (2), The ring beams (7) are arranged concentrically and coaxially with a certain distance from the ring beams, and the cable protection pipe (5) and the anti-collision system ( 6) and several ring beam support rods (4) are connected as a whole; the sacrificial anode (8) is welded on the lowermost ring beam (7) or the lower part of the ring beam support rod (4). 2. The integrated auxiliary structure of offshore wind turbine monopile foundation according to claim 1, characterized in that: the gap between the ring beam (7) and the monopile foundation (2) is tightly packed with several wedge-shaped steel sheets .