Land wind power generation foundation structure, tower and wind generating set

Abstract

The invention discloses an onshore wind power generation foundation structure, a tower and a wind generating set, and belongs to the technical field of towers of wind generating sets, the foundation structure comprises a soil layer, a pouring groove is formed in the soil layer, a pouring structure is arranged in the pouring groove, a groove is formed in the pouring structure, a reinforcing part is arranged in the groove, and the reinforcing part is arranged in the groove. The reinforcing piece is of a structure with an upper opening and a lower opening, the cross section of the reinforcing piece is of an I-shaped structure, elastic concrete layers are poured in the reinforcing piece and between the reinforcing piece and the inner wall of the groove, a base is arranged on the upper portion of the reinforcing piece, and a reinforcement cage structure is arranged in the base and the elastic concrete layers. And a plurality of screw rods are arranged on the upper surface of the base. The pouring structure, the elastic concrete layer and the base can be connected through the reinforcing pieces, the elastic concrete layer can conduct buffering after the tower and the generator set are subjected to vibration or wind impact, and the problem that the opening amount at the joint interface is too large is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of towers for wind turbine generator sets, and in particular to an onshore wind power generation foundation structure, a tower and a wind turbine generator set. Background Art

[0002] The onshore wind power generation structure includes the wind turbine base and the upper tower, nacelle, hub and blades. The wind turbine base is an important part of the wind power structure. It has the special characteristics of bearing 360-degree repeated loads and large eccentric forces. Its stability is crucial to ensure the normal operation of the wind turbine. The wind turbine base bears large horizontal loads and overturning moments on the upper part, and the stability and deformation requirements of the foundation are also high. At present, common wind turbine foundation forms include natural foundation extension foundation, rib beam plate foundation, pile foundation, prestressed barrel foundation and rock anchor foundation.

[0003] With the development of large-scale units, the load acting on the base is getting bigger and bigger, which requires the wind turbine base to provide greater rigidity and bending bearing capacity. The common practice is to increase the diameter of the wind turbine base, increase the diameter of the radial steel bars of the bottom plate, and increase the amount of steel bars (such as reducing the spacing between steel bars, using multi-layer steel bars, etc.). However, the large amount of steel bars increases the material cost of the wind turbine base; the steel bars are difficult to tie, the spacing between steel bars is small, and the concrete is not vibrated well, resulting in poor quality of concrete pouring, honeycombs, holes, etc. At the same time, there will also be a problem of excessive opening at the node interface after the base is vibrated or hit by wind. Summary of the invention

[0004] The object of the present invention is to provide an onshore wind power generation foundation structure, a tower and a wind turbine generator set to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A land wind power generation foundation structure includes a soil layer, a casting trough is opened on the soil layer, a casting structure is arranged in the casting trough, a groove is provided on the casting structure, a reinforcement is arranged in the groove, the reinforcement is an upper and lower open structure and has an I-shaped cross-section, an elastic concrete layer is cast inside the reinforcement and between the reinforcement and the inner wall of the groove, a base is arranged on the upper part of the reinforcement, a steel cage structure is arranged in the base and the elastic concrete layer, the reinforcement is located in the steel cage structure, and a plurality of screws are arranged on the upper surface of the base.

[0007] Preferably, the casting structure includes a base plate, on which a plurality of side plates are arranged, the plurality of side plates form a square structure, the abutting sides of two adjacent side plates are inclined surfaces, a plurality of reinforcing plates are arranged in sequence from top to bottom on the outer side of the square structure, a plurality of hollow grooves are opened on the reinforcing plates, a first concrete layer is cast between the outer wall of the square structure and the side wall of the casting groove, a second concrete layer is cast in the square structure, and a reinforcing rib structure is arranged in the second concrete layer.

[0008] Preferably, the reinforcing rib structure includes a plurality of transverse ribs and a plurality of vertical ribs, the transverse ribs and the vertical ribs are fixed by wire ties, and the ends of the transverse ribs are provided with nuts for fixing the reinforcing plates.

[0009] Preferably, an extension platform is provided at the bottom of the base, and a plurality of notches are provided on the upper surface of the extension platform, wherein extension bolts are provided at the top ends of a plurality of vertical ribs corresponding to a portion of the notches.

[0010] Preferably, a mounting platform is provided between the casting structure and the extension platform, and a fixing bolt 1 is provided on the mounting platform corresponding to the other part of the notch.

[0011] Preferably, foundation piles are provided at the four top corners of the lower surface of the mounting platform, the bottom ends of the foundation piles extend into the soil layer and are provided with a bottom plate, and the foundation piles are fixed to the mounting platform by fixing bolts 2.

[0012] Preferably, the steel cage structure includes a plurality of transverse connecting ribs arranged in sequence from top to bottom, the transverse connecting ribs are in a cross-shaped structure, the transverse connecting ribs are located inside the reinforcement, the ends of the transverse connecting ribs extend out of the reinforcement and are provided with annular connecting ribs, a plurality of longitudinal connecting ribs are provided on the plurality of annular connecting ribs, and the plurality of longitudinal connecting ribs are arranged circumferentially.

[0013] A tower for onshore wind power generation comprises the onshore wind power generation foundation structure.

[0014] An onshore wind turbine generator set comprises a tower of the wind turbine generator set.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention uses reinforcement members to connect the cast structure, the elastic concrete layer and the base, so that the elastic concrete layer can provide buffering after the tower and the generator set are subjected to vibration or wind impact, thereby avoiding the problem of excessive opening at the node interface; by setting a steel cage structure, the connection strength between the base and the elastic concrete layer can be further improved, and by setting screws on the base, it is convenient for subsequent staff to install the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the onshore wind power generation foundation structure of the present invention;

[0018] Figure 2 It is a cross-sectional view of the overall structure of the onshore wind power generation foundation structure of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the onshore wind power generation foundation structure without a soil layer of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the side plate of the onshore wind power generation foundation structure of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the reinforcing rib structure of the onshore wind power generation foundation structure of the present invention;

[0022] Figure 6 It is a structural schematic diagram of a reinforcement member and a steel cage structure of an onshore wind power generation foundation structure of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the installation platform of the onshore wind power generation foundation structure of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the base of the onshore wind power generation foundation structure of the present invention.

[0025] In the figure:

[0026] 1. Soil layer; 2. Casting trough; 3. Base plate; 4. Side plate; 5. Concrete layer one; 6. Horizontal reinforcement; 7. Vertical reinforcement; 8. Reinforcement plate; 9. Hollow groove; 10. Reinforcement; 11. Horizontal connecting reinforcement; 12. Annular connecting reinforcement; 13. Longitudinal connecting reinforcement; 14. Base; 15. Mounting platform; 16. Fixing bolt one; 17. Extension platform; 18. Notch; 19. Extension bolt; 20. Elastic concrete layer; 21. Concrete layer two; 22. Foundation piles; 23. Bottom plate; 24. Fixing bolt two; 25. Screw. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 - Figure 8 , the present invention provides a technical solution:

[0029] like Figure 1 and Figure 2 As shown, an onshore wind power generation foundation structure includes a soil layer 1, a casting trough 2 is opened on the soil layer 1, a casting structure is arranged in the casting trough 2, the casting structure has a groove, the cross section of the casting structure is a U-shaped structure, a reinforcement member 10 is arranged in the groove, the reinforcement member 10 is an upper and lower open structure and the cross section is an I-shaped structure, an elastic concrete layer 20 is poured inside the reinforcement member 10 and between the reinforcement member 10 and the inner wall of the groove, the elastic concrete layer 20 is a new type of building material, which has higher elasticity and flexibility. Compared with traditional concrete, it can better adapt to external influences such as temperature changes and earthquakes. This material is usually combined with polymers or other toughening components to improve its crack resistance and durability. The preparation of elastic concrete blocks generally includes the following steps: selecting suitable raw materials (such as polymer admixtures), and mixing cement, sand, gravel, polymers and other components in proportion. Use appropriate processes for mixing, molding and curing. The upper part of the reinforcement 10 is provided with a base 14. By using the reinforcement 10 to connect the casting structure, the elastic concrete layer 20 and the base 14, when the tower and the generator set are subjected to vibration or wind impact, the elastic concrete layer 20 can provide buffering to avoid the problem of excessive opening at the node interface. A steel cage structure is provided in the base 14 and the elastic concrete layer 20. The reinforcement 10 is located in the steel cage structure. By providing the steel cage structure, the connection strength between the reinforcement 10, the base 14 and the elastic concrete layer 20 can be further improved. A plurality of screws 25 are provided on the upper surface of the base 14 to facilitate subsequent installation of the tower by the staff.

[0030] like Figure 2 - Figure 4As shown, the casting structure includes a base plate 3, on which a plurality of side plates 4 are arranged, and the plurality of side plates 4 form a square structure. The abutting sides of two adjacent side plates 4 are inclined surfaces, which can facilitate the staff to splice the adjacent side plates 4. The outer sides of the two square structures are sequentially provided with a plurality of reinforcing plates 8 from top to bottom. The cross section of the reinforcing plates 8 is an L-shaped structure, and under the action of the plurality of reinforcing plates 8, a reaction force can be provided when the base settles, thereby reducing the influence of the base settlement on the foundation structure. A plurality of hollow grooves 9 are provided on the reinforcing plates 8, and a concrete layer is cast between the outer wall of the square structure and the side wall of the casting groove 2. 15. When pouring the concrete layer 15, the concrete can flow onto the base plate 3 through the hollow groove 9, and can also effectively increase the contact area between the concrete and the reinforcing plate 8 to improve stability. A concrete layer 21 is poured in the square structure. When pouring the concrete layer 21, the staff needs to install the template in the reinforcing rib structure, and then pour the concrete between the template and the side plate 4. A reinforcing rib structure is provided in the concrete layer 21, and the reinforcing rib structure is laid before pouring the concrete layer 21. In the present embodiment, the base plate 3, the side plate 4 and the reinforcing plate 8 are all made of steel plates.

[0031] Further, such as Figure 5 As shown, the reinforcing rib structure includes a plurality of transverse ribs 6 and a plurality of vertical ribs 7. The transverse ribs 6 and the vertical ribs 7 are fixed by wire tying. Nuts for fixing the reinforcing plate 8 are provided at the ends of the transverse ribs 6. The plurality of transverse ribs 6 and the plurality of vertical ribs 7 form a cavity structure with upper and lower openings in the middle, and the reinforcing member 10 is located in the cavity structure.

[0032] like Figure 8 As shown, an extension platform 17 is provided at the bottom of the base 14, and the base 14 and the extension platform 17 are an integrated structure. A plurality of notches 18 are provided on the upper surface of the extension platform 17, wherein extension bolts 19 are provided at the top ends of a plurality of vertical ribs 7 corresponding to a portion of the notches 18, and the base 14 and the cast structure are fixed by the extension bolts 19. It should be noted that the diameter of the hole groove at the connection between the extension bolt 19 and the extension platform 17 is larger than the diameter of the extension bolt 19.

[0033] like Figure 3 As shown, a mounting platform 15 is provided between the casting structure and the extension platform 17, and a fixing bolt 16 is provided on the mounting platform 15 corresponding to the other part of the notch 18, and the base 14 and the mounting platform 15 are fixed by the fixing bolt 16. In this embodiment, the mounting platform 15 is a steel plate, and the diameter of the hole groove at the connection between the fixing bolt 16 and the extension platform 17 is larger than the diameter of the fixing bolt 16.

[0034] Furthermore, foundation piles 22 are provided at the four top corners of the lower surface of the mounting platform 15, the bottom ends of the foundation piles 22 extend into the soil layer 1 and are provided with a bottom plate 23, and the foundation piles 22 are fixed to the mounting platform 15 by fixing bolts 24, wherein the bottom ends of the foundation piles 22 extend into the hard soil layer in the soil layer 1.

[0035] Specifically, by setting the diameter of the hole at the connection between the extension bolt 19 and the extension platform 17 to be larger than the diameter of the extension bolt 19 and the diameter of the hole at the connection between the fixing bolt 16 and the extension platform 17 to be larger than the diameter of the fixing bolt 16, when the tower or the generator set is subjected to vibration or wind impact, the elastic concrete layer 20 can firstly provide buffering. When the vibration or wind impact force is large, the mounting platform 15, the foundation pile 22, the base plate 23 and the casting structure can limit the displacement amplitude of the tower, thereby improving the stability of the tower.

[0036] like Figure 6 As shown, the steel cage structure includes a plurality of transverse connecting ribs 11 arranged in sequence from top to bottom, the transverse connecting ribs 11 are in a cross-shaped structure, the transverse connecting ribs 11 are located inside the reinforcement 10, the ends of the transverse connecting ribs 11 extend out of the reinforcement 10 and are provided with annular connecting ribs 12, a plurality of longitudinal connecting ribs 13 are provided on the plurality of annular connecting ribs 12, and the plurality of longitudinal connecting ribs 13 are arranged circumferentially.

[0037] A tower for onshore wind power generation comprises an onshore wind power generation foundation structure.

[0038] An onshore wind turbine generator set comprises a tower of the wind turbine generator set.

[0039] The working process of this embodiment is as follows: when constructing the onshore wind power generation foundation structure, the staff selects a suitable area on the soil layer 1 to dig the casting trough 2, and then assembles the base plate 3, the side plate 4 and the reinforcing rib structure. After the assembly is completed, the above structure is placed at the bottom of the casting trough 2 by a crane, and then the template is installed in the cavity structure in the reinforcing rib structure, and then the concrete layer 1 5 and the concrete layer 2 21 are cast. After the concrete layer 1 5 and the concrete layer 2 21 are solidified, the reinforcement 10 and the steel cage structure are placed in the groove, and then the elastic concrete layer 20 is cast. After the elastic concrete layer 20 is solidified, the mounting platform 15 and the base 14 are installed.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An onshore wind power generation foundation structure, comprising a soil layer, characterized in that: A casting trough is provided on the soil layer, a casting structure is provided in the casting trough, a groove is provided on the casting structure, a reinforcement is provided in the groove, the reinforcement is an upper and lower open structure and an I-shaped cross-section, an elastic concrete layer is cast inside the reinforcement and between the reinforcement and the inner wall of the groove, a base is provided on the upper part of the reinforcement, a steel cage structure is provided in the base and the elastic concrete layer, the reinforcement is located in the steel cage structure, and a plurality of screws are provided on the upper surface of the base.

2. The onshore wind power generation foundation structure according to claim 1, characterized in that: The casting structure includes a base plate, on which a plurality of side plates are arranged, and the plurality of side plates form a square structure. A plurality of reinforcing plates are arranged in sequence from top to bottom on the outer side of the square structure, and a plurality of hollow grooves are opened on the reinforcing plates. A first concrete layer is cast between the outer wall of the square structure and the side wall of the casting groove, and a second concrete layer is cast in the square structure, and a reinforcing rib structure is arranged in the second concrete layer.

3. The onshore wind power generation foundation structure according to claim 2, characterized in that: The reinforcing rib structure includes a plurality of transverse ribs and a plurality of vertical ribs. The transverse ribs and the vertical ribs are fixed by wire ties. The ends of the transverse ribs are provided with nuts for fixing the reinforcing plates.

4. The onshore wind power generation foundation structure according to claim 3, characterized in that: An extension platform is arranged at the bottom of the base, and a plurality of notches are opened on the upper surface of the extension platform, wherein the top ends of a plurality of vertical ribs corresponding to a part of the notches are provided with extension bolts.

5. The onshore wind power generation foundation structure according to claim 4, characterized in that: A mounting platform is arranged between the casting structure and the extension platform, and a fixing bolt 1 is arranged on the mounting platform corresponding to the notch in the other part.

6. The onshore wind power generation foundation structure according to claim 5, characterized in that: Foundation piles are arranged at the four top corners of the lower surface of the mounting platform, the bottom ends of the foundation piles extend into the soil layer and are provided with a bottom plate, and the foundation piles are fixed to the mounting platform by fixing bolts 2.

7. The onshore wind power generation foundation structure according to claim 1, characterized in that: The steel cage structure includes a plurality of transverse connecting ribs arranged in sequence from top to bottom, the transverse connecting ribs are in a cross-shaped structure, the transverse connecting ribs are located inside the reinforcement, the ends of the transverse connecting ribs extend out of the reinforcement and are provided with annular connecting ribs, a plurality of longitudinal connecting ribs are provided on the plurality of annular connecting ribs, and the plurality of longitudinal connecting ribs are arranged circumferentially.

8. A tower for onshore wind power generation, characterized in that: The invention comprises an onshore wind power generation foundation structure as claimed in any one of claims 1 to 7.

9. An onshore wind turbine generator set, characterized in that: The invention comprises a tower of a wind turbine generator set as claimed in claim 8.

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