CN211898511U - Combined cylinder structure fan foundation - Google Patents
Combined cylinder structure fan foundation Download PDFInfo
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- CN211898511U CN211898511U CN202020324898.9U CN202020324898U CN211898511U CN 211898511 U CN211898511 U CN 211898511U CN 202020324898 U CN202020324898 U CN 202020324898U CN 211898511 U CN211898511 U CN 211898511U
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Abstract
The utility model discloses a combined cylinder structure fan foundation, which comprises a circular expansion foundation and an annular structure, wherein the bottom of the circular expansion foundation is rigidly connected with the top of the annular structure, the top surface of the circular expansion foundation is flush with the ground, the annular structure comprises a plurality of pressure filling piles, the pressure filling piles are arranged along the circumferential direction of the annular structure, and the diameter of the circular expansion foundation is more than or equal to the outer diameter of the annular structure; the utility model makes full use of the foundation soil pressure on the side of the combined large-diameter cylinder structure foundation to resist the large bending moment load of the fan, and adopts the expanded foundation and the large annular structure surface to bear on the section with large bending moment and shearing force, thus making full use of the strength of the combined structure; the foundation can be applied to all onshore wind turbine foundations, particularly to wind turbine foundations needing foundation treatment and natural foundation foundations of large-capacity wind turbine generators, and has obvious economic advantages.
Description
Technical Field
The utility model relates to a wind-powered electricity generation field especially relates to a modular drum structure fan basis.
Background
The wind turbine foundation is an important component part for building a wind power plant, and not only is the safe and reliable operation of the wind power plant concerned, but also the investment of the wind power plant is influenced. With the increasing popularization of wind power plant construction areas, in areas with poor engineering characteristics such as cohesive soil, silt and filling soil, the natural foundation cannot meet the construction requirements of the fan foundation, and foundation treatment is needed. The traditional foundation treatment mode of the wind turbine foundation usually adopts a pile foundation, namely, the large bending moment load of the wind turbine generator is converted into the vertical load of a foundation pile by utilizing the stress of the foundation pile. In order to meet the requirement of bearing capacity of the foundation piles, a plurality of foundation piles need to be arranged, and bearing platforms are poured to act together. The pile foundation has large foundation pile engineering quantity, large concrete volume of a bearing platform and higher overall cost. With the application of large-capacity wind turbine generators, the amount of basic engineering for expanding the wind turbine foundation of the natural foundation is huge, and the reduction of the manufacturing cost of the wind turbine foundation also becomes an important technical requirement under the background of wind power development in the flat era.
SUMMERY OF THE UTILITY MODEL
The utility model provides a modular drum structure fan basis, nimble application pressure filling pile adopt the combination formula drum structure that lower part drum and the circular extension basis rigid connection in upper portion formed, and the big moment of flexure effect of fan is resisted to the fully utilized drum structure side soil body, reduces the engineering volume, reduces the cost on land wind turbine generator system basis.
In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a modular drum structure fan basis, includes circular extension basis and loop configuration, the bottom on circular extension basis and loop configuration's top rigid connection, the top surface and the ground parallel and level on circular extension basis, loop configuration include a plurality of pressure filling piles, and the pressure filling pile is arranged along loop configuration's circumferencial direction, and the diameter more than or equal to loop configuration's on circular extension basis external diameter, loop configuration's bottom stretches into ground bearing layer.
And a reinforcement cage is arranged in the pressure filling pile, and the top of the reinforcement cage extends into the round expansion foundation.
And a reinforcement cage is arranged at the upper part of the pressure filling pile or in the whole pressure filling pile.
And the steel bars at the top of the steel bar cage are connected with the steel bars inside the round expansion foundation.
The pressure filling piles are closely arranged along the circumferential direction of the annular structure.
The diameter of the pressure irrigation pile is larger than 300 mm; the pile body strength of the pressure filling pile is not lower than C15.
The overall height of the circular expansion foundation and the annular structure is 10-20 m.
The diameter of the circular expansion base is 8-10 m.
The outer diameter of the annular structure is 85% -100% of the diameter of the circular expansion base.
Compared with the prior art, the utility model discloses following beneficial effect has at least, the bottom of circular extension basis and the top rigid connection of loop configuration, loop configuration includes a plurality of pressure irrigation stake, the pressure irrigation stake is arranged along loop configuration's circumferencial direction, the diameter more than or equal to loop configuration's of circular extension basis external diameter, loop configuration's bottom stretches into ground bearing layer, make full use of the foundation soil pressure of combination major diameter drum structure basis side to resist the big moment of flexure load of fan, adopt extension basis and big annular structure face to undertake in moment of flexure and the great cross-section of shear force simultaneously, make full use of the intensity of composite structure; the foundation can be applied to all onshore wind turbine foundations, particularly to wind turbine foundations needing foundation treatment and natural foundation foundations of large-capacity wind turbine generators, and has obvious economic advantages.
Furthermore, set up the steel reinforcement cage in the stake of pressure irrigation, the steel reinforcement cage can effectively improve the intensity of pressure irrigation stake and annular structure, and the steel reinforcement cage top stretches into circular extension basis for annular structure and circular extension basis form effective connection, improve the rigidity of basis.
Furthermore, the pressure filling piles are closely arranged along the circumferential direction of the annular structure, the integrity of the annular structure can be improved, and the pressure filling piles have better rigidity and strength.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic sectional view taken along line A-A of the annular structure.
Fig. 3 is a schematic view of a large sample of the pressure-irrigation pile.
In the figure: 1-circular extended basis; 2-a ring-shaped structure; 3-pressure grouting the pile; 4-a reinforcement cage; 5-foundation bearing layer.
Detailed Description
The present invention will be explained in detail with reference to the accompanying drawings and the embodiments.
As shown in fig. 1, a combined cylindrical fan foundation comprises a circular expansion foundation 1 and an annular structure 2, wherein the bottom of the circular expansion foundation 1 is rigidly connected with the top of the annular structure 2, the annular structure 2 comprises a plurality of pressure filling piles 3, and the pressure filling piles 3 are arranged along the circumferential direction of the annular structure 2; the diameter of the circular expanded foundation 1 is larger than or equal to the outer diameter of an annular structure 2 formed by the pressure filling piles, and the bottom of the annular structure 2 extends into a foundation bearing layer 5.
As shown in fig. 1 and 3, a reinforcement cage 4 is arranged in the pressure filling pile 3, and the top of the reinforcement cage 4 extends into the circular expansion foundation 1.
As shown in fig. 2, the pressure filling piles 3 are closely arranged in the circumferential direction of the ring structure 2.
The diameter of the pressure filling pile 3 is larger than 300 mm; the pile body strength of the pressure filling pile 3 is not lower than C15.
The overall height of the circular expansion foundation 1 and the annular structure 2 is 10-20 m; the diameter of the circular expansion foundation 1 is 8-10 m.
Preferably, the outer diameter of the annular structure 2 is 85% -100% of the diameter of the circular expansion foundation 1.
And the reinforcement cage 4 in the pressure-grouting pile 3 is arranged according to the integral stress characteristic of the foundation, and the reinforcement cage 4 is arranged at the part in the high direction in the pressure-grouting pile 3.
As the utility model discloses an optional embodiment, according to actual demand, set up steel reinforcement cage 4 in the serious pressure irrigation stake 3 of main wind direction pulling, and the reinforcing bar at steel reinforcement cage 4 top and the reinforcing bar fixed connection in the circular extension basis 1.
The utility model discloses carry out the construction of pressure filling pile foundation earlier and handle, 3 construction completions of pressure filling pile should guarantee that the loop configuration is complete in succession, carry out the construction of extension basis again.
Claims (9)
1. The combined type cylinder structure fan foundation is characterized by comprising a circular expansion foundation (1) and an annular structure (2), wherein the bottom of the circular expansion foundation (1) is rigidly connected with the top of the annular structure (2), the top surface of the circular expansion foundation (1) is flush with the ground, the annular structure (2) comprises a plurality of pressure filling piles (3), the pressure filling piles (3) are arranged along the circumferential direction of the annular structure (2), and the diameter of the circular expansion foundation (1) is larger than or equal to the outer diameter of the annular structure (2); the bottom of the ring-shaped structure (2) extends into the foundation bearing layer (5).
2. The combined type cylinder structure fan foundation according to claim 1, wherein a reinforcement cage (4) is arranged in the pressure filling pile (3), and the top of the reinforcement cage (4) extends into the round expansion foundation (1).
3. The combined cylindrical fan foundation of claim 2, wherein a reinforcement cage (4) is arranged in the upper part of the pressure filling pile (3) or the whole pressure filling pile (3).
4. The combined type cylinder structure fan foundation according to claim 2, wherein the steel bars at the top of the steel reinforcement cage (4) are connected with the steel bars inside the circular extension foundation (1).
5. The combined cylindrical fan foundation of claim 1, wherein the pressure filling piles (3) are closely arranged in the circumferential direction of the ring-shaped structure (2).
6. The combined cylindrical fan foundation of claim 1, wherein the diameter of the pressure filling pile (3) is more than 300 mm; the pile body strength of the pressure filling pile (3) is not lower than C15.
7. The combined cylindrical fan foundation of claim 1, wherein the overall height of the circular extension foundation (1) and the annular structure (2) is 10-20 m.
8. The combined type cylinder structure fan foundation according to claim 1, wherein the diameter of the circular expansion foundation (1) is 8-10 m.
9. The combined cylindrical fan foundation of claim 1, wherein the outer diameter of the annular structure (2) is 85% -100% of the diameter of the circular expanding foundation (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020324898.9U CN211898511U (en) | 2020-03-16 | 2020-03-16 | Combined cylinder structure fan foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020324898.9U CN211898511U (en) | 2020-03-16 | 2020-03-16 | Combined cylinder structure fan foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211898511U true CN211898511U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020324898.9U Active CN211898511U (en) | 2020-03-16 | 2020-03-16 | Combined cylinder structure fan foundation |
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| CN (1) | CN211898511U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184746A1 (en) * | 2020-03-16 | 2021-09-23 | 中国华能集团清洁能源技术研究院有限公司 | Wind turbine base having composite cylindrical structure |
-
2020
- 2020-03-16 CN CN202020324898.9U patent/CN211898511U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184746A1 (en) * | 2020-03-16 | 2021-09-23 | 中国华能集团清洁能源技术研究院有限公司 | Wind turbine base having composite cylindrical structure |
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