CN215759149U - Underwater fan foundation structure - Google Patents
Underwater fan foundation structure Download PDFInfo
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- CN215759149U CN215759149U CN202121996979.4U CN202121996979U CN215759149U CN 215759149 U CN215759149 U CN 215759149U CN 202121996979 U CN202121996979 U CN 202121996979U CN 215759149 U CN215759149 U CN 215759149U
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Abstract
The utility model discloses an underwater fan foundation structure which comprises a fan foundation base, a reinforced concrete retaining wall and a rain baffle plate, wherein the reinforced concrete retaining wall is arranged on the fan foundation base; the tower drum of the fan is fixedly arranged on the fan base; the reinforced concrete retaining wall is fixedly arranged on the fan foundation base, and is annular and arranged around the tower barrel when viewed from a top view angle; the rain baffle is round platform-shaped and surrounds the tower cylinder, the upper end of the rain baffle is fixed on the outer surface of the tower cylinder, and the lower end of the rain baffle is fixed on the top of the reinforced concrete retaining wall. The utility model has simple structure type, convenient construction and low cost; the pile is not needed to be driven, and the adverse effect on the surrounding environment is avoided; the reinforced concrete retaining wall and the rain baffle have good protection effects on the fan foundation base and the crawling ladder, and maintenance cost is reduced.
Description
Technical Field
The utility model relates to an underwater fan foundation structure, belongs to the technical field of wind power generation, and is particularly suitable for offshore wind power engineering.
Background
In order to achieve the aim of carbon emission reduction, the new energy industry is further developed, more and more offshore culture areas are used for building wind power plants, and the high cost of offshore wind turbine foundations (common jacket foundations or steel pipe pile foundations) obviously reduces the overall yield of the wind power plants. Meanwhile, the traditional piling construction influences fishery breeding, and further limits the development of offshore wind power industry. The common offshore wind turbine foundation is high in manufacturing cost and complex in construction, and pile foundation construction influences development of offshore aquaculture and has a large adverse effect on the environment.
In addition, during sea water and rainwater entered into the tower section of thick bamboo of fan and fan foundation base's the joint gap, lead to fan foundation base to appear the potential safety hazard easily, though be provided with waterproof glue in this gap, waterproof glue can be ageing-accelerated in the weather of blowing, need constantly maintain again, has increased the maintenance cost, and the improper great potential safety hazard that still exists of maintenance.
SUMMERY OF THE UTILITY MODEL
The utility model provides an underwater fan foundation structure, which is particularly suitable for offshore wind power engineering so as to reduce the construction cost and reduce the adverse effect on the environment; the damage of seawater and rainwater to the base of the fan is avoided. The specific technical scheme is as follows.
An underwater fan foundation structure is characterized by comprising a fan foundation base, a reinforced concrete retaining wall and a rain baffle plate; the tower drum of the fan is fixedly arranged on the fan base; the reinforced concrete retaining wall is fixedly arranged on the fan foundation base, and is annular and arranged around the tower barrel when viewed from a top view angle; the rain baffle is round platform-shaped and surrounds the tower cylinder, the upper end of the rain baffle is fixed on the outer surface of the tower cylinder, and the lower end of the rain baffle is fixed on the top of the reinforced concrete retaining wall.
By adopting the technical scheme, the reinforced concrete water retaining wall and the rain baffle can effectively shield the bottoms of the fan foundation and the tower drum and prevent seawater and rainwater from directly entering the base of the fan foundation; in addition, the weather shield can prevent that the waterproof glue in the connection gap of tower section of thick bamboo and fan basis base from being penetrated by the direct solar radiation, slows down the waterproof glue ageing rate in this gap. Thereby achieving the purpose of effectively protecting the safe operation of the fan foundation.
Further, the part of the fan base seat exceeding three-quarters height is positioned below the mud surface. Increase the stability of fan foundation base through this kind of mode to need not pile, when reduce cost, reduce the adverse effect to surrounding environment.
Further, the fan foundation base comprises a circular truncated cone part at the lower part and a cylindrical part at the upper part, and the tower cylinder and the reinforced concrete water retaining wall are arranged at the top of the cylindrical part. The diameter of the circular truncated cone part is larger, so that the bearing capacity and the stability of the fan base can be enhanced.
Furthermore, the cylindrical part is provided with embedded connecting steel bars, the lower ends of the embedded connecting steel bars are located in the cylindrical part, and the upper ends of the embedded connecting steel bars are located in the reinforced concrete retaining wall. Through setting up pre-buried connecting reinforcement, strengthened reinforced concrete breakwater and fan foundation base's connection reliability.
Furthermore, a prestressed anchor bolt is pre-embedded in the fan foundation base, and the bottom of the tower cylinder is fixedly connected with the fan foundation base through the prestressed anchor bolt. The prestressed anchor bolt enables the fixing of the tower to be simple and reliable.
Furthermore, a ladder stand is fixedly arranged on the inner surface of the reinforced concrete water retaining wall. The ladder stand makes things convenient for maintainer to enter into and overhauls on the fan basis base. The ladder stand arranged inside the reinforced concrete retaining wall is protected by the rain baffle and the reinforced concrete retaining wall, and the service life of the reinforced concrete retaining wall is prolonged.
Further, a tower tube door is arranged on the tower tube, and the rain baffle is located above the tower tube door. The tower door is an entrance for maintenance personnel to enter the tower, and is arranged below the rain shield, so that equipment in the tower can be better protected.
Compared with the prior art, the utility model has the following beneficial effects.
(1) The cost is low. Compared with the foundation construction cost of tens of millions of times on the basis of the offshore wind turbine, the construction cost of the wind turbine foundation provided by the utility model only needs two to three million, and the construction cost advantage is obvious; (2) the structure type is simple, and the construction is convenient; (3) the pile is not needed, and the adverse effect on the surrounding environment is reduced; (4) the reinforced concrete retaining wall and the rain baffle have good protection effects on the fan foundation base and the crawling ladder, and maintenance cost is reduced.
Drawings
FIG. 1 is a schematic cross-sectional layout of an underwater wind turbine foundation structure of the present invention;
fig. 2 is a schematic plan layout view of the underwater wind turbine foundation structure of the present invention.
In the figure: 1-a fan foundation base; 1.1-a truncated cone portion; 1.2-cylindrical part; 2-prestressed anchor bolt: 3-a reinforced concrete water retaining wall; 4-embedding connecting steel bars; 5-a rain shield; 6-climbing a ladder; 7-a tower door; 8-a tower drum; 9-steel sheet pile cofferdam.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
Referring to fig. 1-2, the underwater wind turbine foundation structure includes a wind turbine foundation base 1, a reinforced concrete retaining wall 3 and a weather shield 5; the fan foundation base 1 comprises a circular truncated cone part 1.1 at the lower part and a cylindrical part 1.2 at the upper part, a tower barrel 8 and a reinforced concrete water retaining wall 3 are arranged at the top of the cylindrical part 1.2, and the circular truncated cone part 1.1 and most of the cylindrical part 1.2 are positioned below a mud surface; the wind turbine foundation base 1 is internally pre-buried with a pre-stressed anchor bolt 2, and the bottom of a tower cylinder 8 is fixedly connected with the wind turbine foundation base 1 through the pre-stressed anchor bolt 2; the cylindrical part 1.2 is provided with embedded connecting steel bars 4, the lower ends of the embedded connecting steel bars 4 are positioned in the cylindrical part 1.2, and the upper ends of the embedded connecting steel bars 4 are positioned in the reinforced concrete water retaining wall 3;
viewed from a top view angle, the reinforced concrete retaining wall 3 is annular and is arranged around the tower barrel 8; the rain baffle 5 is in a round table shape and is arranged around the tower barrel 8, the upper end of the rain baffle 5 is fixed on the outer surface of the tower barrel 8, and the lower end of the rain baffle 5 is fixed on the top of the reinforced concrete water retaining wall 3.
Preferably, the part of the wind turbine foundation base 1 exceeding three-quarters height is located below the mud surface to increase the stability of the wind turbine foundation base 1, so that piling is not needed, the cost is reduced, and the adverse effect on the surrounding environment is reduced.
Preferably, the inner surface of the reinforced concrete retaining wall 3 is fixedly provided with a ladder stand 6. The tower tube 8 is provided with a tower tube door 7, and the rain baffle 5 is positioned above the tower tube door 7. The tower door 7 is an entrance for maintenance personnel to enter the tower 8, and is arranged below the rain baffle 5, so that equipment in the tower can be protected better.
The construction method of the underwater fan foundation structure comprises the following steps.
(1) Constructing a steel sheet pile cofferdam 9 around the fan foundation base 1;
(2) pumping water in the steel sheet pile cofferdam 9 and excavating soil in the range of the fan foundation base 1;
(3) installing steel bars in a base of the fan foundation;
(4) a pre-stressed anchor bolt 2 is installed in a fan foundation base 1;
(5) embedding embedded connecting steel bars 4 at the joint of the fan foundation base 1 and the reinforced concrete retaining wall 3;
(6) pouring a fan foundation base 1;
(7) backfilling soil to the original mud surface at the periphery and the upper part of the fan foundation base 1;
(8) mounting a tower drum 8 on a fan foundation base 1 by using a prestressed anchor bolt 2;
(9) pouring a reinforced concrete retaining wall 3;
(10) a ladder stand 6 is arranged on the reinforced concrete water retaining wall 3;
(11) a rain baffle 5 is arranged between the tower barrel above the tower barrel door 7 and the top of the reinforced concrete water retaining wall 3;
(12) and (5) dismantling the recovered steel sheet pile cofferdam 9.
The embodiments of the present invention are described above with reference to the drawings, and the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention is not limited to the above-described embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (8)
1. An underwater fan foundation structure is characterized by comprising a fan foundation base (1), a reinforced concrete retaining wall (3) and a rain baffle (5); a tower barrel (8) of the fan is fixedly arranged on the fan base (1); the reinforced concrete retaining wall (3) is fixedly arranged on the fan foundation base (1), and the reinforced concrete retaining wall (3) is annular and arranged around the tower barrel (8) when viewed from a top view angle; the rain baffle (5) is in a round table shape and surrounds the tower barrel (8), the upper end of the rain baffle (5) is fixed on the outer surface of the tower barrel (8), and the lower end of the rain baffle (5) is fixed on the top of the reinforced concrete retaining wall (3).
2. An underwater wind turbine foundation structure according to claim 1, characterised in that the part of the wind turbine foundation base (1) exceeding three quarters of the height is located below the mud level.
3. An underwater wind turbine foundation structure according to claim 1, characterized in that the wind turbine foundation base (1) comprises a lower circular truncated cone portion (1.1) and an upper cylindrical portion (1.2), and the tower (8) and the reinforced concrete retaining wall (3) are both arranged on top of the cylindrical portion (1.2).
4. An underwater wind turbine foundation structure as claimed in claim 3, wherein the truncated cone portion (1.1) is located below the mud surface.
5. The underwater wind turbine foundation structure according to claim 3, wherein the cylindrical part (1.2) is provided with embedded connecting steel bars (4), the lower ends of the embedded connecting steel bars (4) are located in the cylindrical part (1.2), and the upper ends of the embedded connecting steel bars (4) are located in the reinforced concrete retaining wall (3).
6. An underwater wind turbine foundation structure as claimed in claim 1, wherein a prestressed anchor bolt (2) is embedded in the wind turbine foundation base (1), and the bottom of the tower (8) is fixedly connected with the wind turbine foundation base (1) through the prestressed anchor bolt (2).
7. An underwater wind turbine foundation structure according to claim 1, wherein a ladder stand (6) is fixedly arranged on the inner surface of the reinforced concrete retaining wall (3).
8. An underwater wind turbine foundation structure according to claim 1, wherein the tower (8) is provided with a tower door (7), and the weather shield (5) is located above the tower door (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121996979.4U CN215759149U (en) | 2021-08-23 | 2021-08-23 | Underwater fan foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121996979.4U CN215759149U (en) | 2021-08-23 | 2021-08-23 | Underwater fan foundation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215759149U true CN215759149U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121996979.4U Active CN215759149U (en) | 2021-08-23 | 2021-08-23 | Underwater fan foundation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215759149U (en) |
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2021
- 2021-08-23 CN CN202121996979.4U patent/CN215759149U/en active Active
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