CN212294732U

CN212294732U - Assembled offshore wind power barrel type foundation

Info

Publication number: CN212294732U
Application number: CN202021656857.6U
Authority: CN
Inventors: 练继建; 王海军; 刘润; 燕翔; 王孝群
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-01-05
Anticipated expiration: 2030-08-11

Abstract

The utility model provides an assembled marine wind power section of thick bamboo type basis, including a section of thick bamboo base, a section of thick bamboo base top has set gradually changeover portion and a tower section of thick bamboo from bottom to top, the changeover portion with connect through the ring flange between the tower section of thick bamboo, the ring flange passes through bolt locking and fixes, a section of thick bamboo base top still is provided with a supporting beam, a supporting beam terminal with changeover portion fixed connection. The utility model discloses a local structure assembly forms, has shortened construction cycle, has reduced marine wind power construction cost.

Description

Assembled offshore wind power barrel type foundation

Technical Field

The utility model relates to a technical field on marine wind power basis, more specifically relates to an assembled marine wind power section of thick bamboo type basis.

Background

Compared with onshore wind power, offshore wind power has the advantages of low turbulence, excellent wind resource, no land occupation, being close to developed coastal areas in China and the like, and offshore wind power construction is gradually developed from offshore to deep sea areas. With the emphasis of the country and the gradual maturity of the industry, the offshore wind power in China gradually shows good development momentum. According to statistics, the offshore wind power development potential of 5-25 m water depth and 50m height in the eastern coastal region of China is about 2 hundred million kilowatts, and the offshore wind power development potential of 5-50 m water depth and 70m height can reach 5 hundred million kilowatts. Offshore wind power is bound to develop towards deep sea, high capacity and low cost in the future.

Offshore wind power foundation structure forms are various, and the most extensive current pile foundation and gravity type foundation are applied. In recent years, with the continuous development of the field of ocean rock and soil, the concept of taking a cylindrical foundation as a wind power foundation structure is continuously developed and gradually perfected, and related research contents are gradually enriched. Compared with the traditional pile foundation, the cylinder structure adopts air-float towing and negative pressure sinking, the offshore operation period is short, and the pile foundation has good anti-overturning capability. However, the cylindrical foundation in actual production at present mostly adopts a circular section, and is mostly prefabricated on the bank, so that the prefabrication difficulty is high, the period is long, and the measure cost is high. In order to further implement the purposes of reducing cost and removing subsidies, realizing the goal of on-line at a low price, improving the applicability of the offshore wind power cylindrical foundation and reducing the cost, a polygonal cylindrical foundation structure is necessary to be provided. The polygonal cylindrical foundation structure and the circular cylindrical foundation have almost no difference in force transmission and bearing, but the polygonal cylindrical foundation is a plurality of equal-size vertical cylindrical walls which can be formed by combining a plurality of assembly structures, so that the prefabrication difficulty is greatly reduced, and the assembly efficiency is improved.

Therefore, a technical scheme that the bearing capacity of the structure is close to that of a cylindrical foundation adopted in the past, the production and construction period can be shortened, and the offshore wind power construction cost and difficulty can be reduced is urgently needed in the prior art.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model provides an assembled marine wind power section of thick bamboo type basis.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides an assembled marine wind power section of thick bamboo type basis, includes a section of thick bamboo base, a section of thick bamboo base top has set gradually changeover portion and a tower section of thick bamboo from bottom to top, the changeover portion with connect through the ring flange between the tower section of thick bamboo, the ring flange passes through bolt locking and fixes, a section of thick bamboo base top still is provided with a supporting beam, a supporting beam terminal with changeover portion fixed connection.

The cylinder base is a regular hexagonal prism, the supporting beams are six in number and are respectively arranged on perpendicular bisectors of all sides of a hexagon on the upper surface of the cylinder base.

The transition section is of a cylindrical reinforced concrete structure.

The height of the transition section is 25-35 m, the outer diameter is 8-12 m, and the wall thickness is 1-1.5 m.

Compared with the prior art, the utility model beneficial effect be: the straight cylindrical transition section is adopted, so that compared with the traditional variable-diameter transition section, the vertical formwork is more convenient, the pouring is easier, and the construction efficiency can be greatly improved; by adopting the supporting beam structure, the horizontal supporting beam support can be provided for the regular hexagon cylinder foundation, and the inclined support can also be provided for the transition section, so that the safety and the stability of the structure are improved; the flange plate is adopted to connect the transition section and the tower barrel, so that the construction efficiency of fan installation is greatly improved; overall structure accessible local structure assembly forms, and carries out the centre gripping operation to it with relevant hauling equipment, for the manufacturing, transportation and the installation of fan provide the advantage, shortened construction cycle, reduced marine wind power construction cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of fig. 1.

Reference numerals: 1. a cylinder base; 2. a support beam; 3. a transition section; 4. a flange plate; 5. a tower drum; 6. and (4) bolts.

Detailed Description

The invention will be further elucidated below on the basis of a specific embodiment.

The assembled offshore wind power cylindrical foundation shown in the figures 1-2 comprises a cylindrical foundation 1, wherein a transition section 3 and a tower barrel 5 are sequentially arranged above the cylindrical foundation 1 from bottom to top, the transition section 3 and the tower barrel 5 are connected through a flange plate 4, the flange plate 4 is locked and fixed through a bolt 6, a supporting beam 2 is further arranged above the cylindrical foundation 1, and the tail end of the supporting beam 2 is fixedly connected with the transition section 3. The cylinder base 1 is a regular hexagonal prism, the supporting beams 2 are six in number and are respectively arranged on the perpendicular bisector of each side of the hexagon on the upper surface of the cylinder base 1, and each supporting beam 2 can apply prestress along the beam axis of the supporting beam, so that a supporting condition is provided for the transition section 3. The transition section 3 is of a cylindrical reinforced concrete structure, the height is 25-35 m, the outer diameter is 8-12 m, and the wall thickness is 1-1.5 m. In the embodiment, the base side of the regular hexagon cylinder is 20m, the height of the transition section cylinder is 30m, the outer diameter is 10m, and the wall thickness is 1.5 m. The flange plate 4 is divided into an upper layer and a lower layer, the upper flange plate is fixedly connected with the tower barrel 5, the lower flange plate is fixedly connected with the transition section 3, the transition section 3 is poured above the barrel foundation 1, and the upper flange plate and the lower flange plate are fixed through the bolts 6, so that the transition section 3 is fixedly connected with the tower barrel 5, and the supporting beam 2 is fixedly connected with the barrel foundation 1 and the transition section 3 respectively. The diameter of the tower 5 is smaller than the diameter of the transition section 3.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.

The above description is only for the preferred embodiment of the present invention, but the present invention is not limited to the above-mentioned specific embodiments, and for those skilled in the art, it is possible to make several modifications and improvements without departing from the inventive concept, and these modifications and improvements are all within the protection scope of the present invention.

Claims

1. The utility model provides an assembled marine wind power section of thick bamboo type basis, includes section of thick bamboo base (1), characterized by, section of thick bamboo base (1) top has set gradually changeover portion (3) and a tower section of thick bamboo (5) from bottom to top, changeover portion (3) with connect through ring flange (4) between tower section of thick bamboo (5), ring flange (4) are fixed through bolt (6) locking, section of thick bamboo base (1) top still is provided with a supporting beam (2), the end of a supporting beam (2) with changeover portion (3) fixed connection.

2. Fabricated offshore wind turbine bucket foundation according to claim 1, characterized in that the bucket foundation (1) is a regular hexagonal prism, the supporting beams (2) have six members in total and are respectively arranged on the perpendicular bisector of each side of the hexagon on the upper surface of the bucket foundation (1).

3. A fabricated offshore wind tubular foundation according to claim 1, characterized in that the transition section (3) is a cylindrical reinforced concrete structure.

4. A fabricated offshore wind tubular foundation according to claim 3, characterized in that the transition section (3) has a height of 25-35 m, an outer diameter of 8-12 m and a wall thickness of 1-1.5 m.