Central tube components, central tube and tower foundation

Abstract

The present application discloses a central tube component, a central tube and a tower tube foundation, wherein the central tube component is bent and includes a first section and a second section connected in sequence, wherein the first section has a first peripheral wall and a first side wall facing away from the second section, and the second section has a second peripheral wall and a second side wall facing away from the first section, and the central tube component has a first prestressed pipe and a second prestressed pipe running through the central tube component, wherein the two ends of the first prestressed pipe are respectively opened at the first side wall and the second peripheral wall, and the two ends of the second prestressed pipe are respectively opened at the second side wall and the first peripheral wall. The central tube component of the present application is a prefabricated product, and there is no need to cast the central tube on site. The volume and width of the central tube component are much smaller than the volume and width of the central tube, which is convenient for transportation, and the connection method of the tensioned prestressed tendons has high splicing efficiency.

Description

Technical Field

[0001] The present application belongs to the technical field of tower construction, and in particular, relates to a central tube component of a tower foundation, a central tube of a tower foundation, and a tower foundation. Background Art

[0002] As the power generation efficiency of wind turbines increases, the length of blades becomes longer and longer, and the height and cross-sectional dimensions of the wind turbine towers that match them also continue to increase. Steel structure towers are difficult to meet the construction requirements of large-section high towers due to their high cost and difficulty in transportation. Concrete towers can economically build large wind turbines, so they have received widespread attention. The tower foundation at the bottom of the tower supports the upper tower, and its compressive strength directly affects the stability and balance of the entire tower. In the related art, in order to ensure a firm connection between the various components of the tower foundation, the tower foundation is cast on site. When the construction site is located in a remote area or an area with a rugged environment, the construction is difficult and there is room for improvement. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art.

[0004] One object of the present application is to provide a central tube component of a tower foundation, wherein the central tube component is bent and includes a first section and a second section connected in sequence, the first section having a first outer peripheral wall and a first side wall facing away from the second section, the second section having a second outer peripheral wall and a second side wall facing away from the first section, the central tube component having a first prestressed pipe and a second prestressed pipe running through the central tube component, the two ends of the first prestressed pipe being open at the first side wall and the second outer peripheral wall respectively, and the two ends of the second prestressed pipe being open at the second side wall and the first peripheral wall respectively.

[0005] The central tube component of the present application is a prefabricated product. By setting the central tube component of the above-mentioned structural form, the central tube component can be pre-processed in an area with better processing conditions, and then transported to the area where the tower foundation needs to be built to be spliced ​​into the central tube. There is no need to cast the central tube on site, and the volume and width of the central tube component are much smaller than the volume and width of the central tube, which is convenient for transportation, and the connection method of tensioning prestressed tendons has high splicing efficiency.

[0006] In the central tube component of the tower foundation of the present application, the first prestressed pipe is perpendicular to the first side wall, and the second prestressed pipe is perpendicular to the second side wall.

[0007] The central tube component of the tower foundation of the present application comprises a plurality of first prestressed pipes, which are arranged in a spaced-apart manner along the thickness direction of the first section, and each group comprises a plurality of first prestressed pipes spaced in a height direction of the central tube component; the second prestressed pipes comprise a plurality of groups, which are arranged in a spaced-apart manner along the thickness direction of the second section, and each group comprises a plurality of second prestressed pipes spaced in a height direction of the central tube component.

[0008] In the central tube component of the tower foundation of the present application, the angle between the first section and the second section is 120° or 30°.

[0009] The central tube component of the tower foundation of the present application has a plurality of central tube sleeves pre-embedded therein, the central tube sleeves are open at the upper end surface and / or the lower end surface of the central tube component, and the plurality of central tube sleeves are distributed at intervals.

[0010] The central tube component of the tower foundation of the present application further includes central tube anchor bars pre-embedded in the central tube component, and the central tube anchor bars are fixedly connected to the central tube sleeve.

[0011] The central tube component of the tower foundation of the present application has an inner peripheral wall of the central tube sleeve provided with an internal thread.

[0012] The present application also proposes a central tube of a tower foundation, comprising a plurality of central tube components as described in any one of the above, wherein the plurality of central tube components are arranged along the circumferential direction, and the side walls of two adjacent central tube components are facing each other, and are connected by prestressed tendons of a first prestressed pipe passing through one of the central tube components and a second prestressed pipe passing through another of the central tube components.

[0013] According to the central tube of one embodiment of the present application, two of the central tube components are provided with notches penetrating through the components in the radial direction, and the two notches are arranged opposite to each other and connected to form a door opening.

[0014] The present application also proposes a tower foundation having a central tube as described in any one of the above.

[0015] The advantages of the central tube, the tower tube foundation and the central tube component mentioned above over the prior art are the same and will not be described in detail here.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a structural schematic diagram of a tower foundation in an embodiment of the present application;

[0019] Figure 2 is a top view (partial cross-section) of the central tube components of the embodiment of the present application spliced ​​into the central tube;

[0020] Figure 3 is a schematic diagram of the connection structure between the central tube components of an embodiment of the present application;

[0021] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0022] Reference numerals:

[0023] Tower foundation 100,

[0024] Bottom plate 10, bottom plate body 11, boss 12, rib beam 13,

[0025] Central tube 20, central tube member 20a, first section 21, first side wall 21a, first outer peripheral wall 21b, first inner peripheral wall 21c, second section 22, second side wall 22a, second outer peripheral wall 22b, second inner peripheral wall 22c, door opening 23,

[0026] The first prestressed pipe 24, the second prestressed pipe 25, the prestressed tendons 26,

[0027] Top plate 30 , support rod 40 , support rod body 41 , connecting rod 44 , cushion layer 50 . DETAILED DESCRIPTION

[0028] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0029] The tower foundation 100 of the embodiment of the present application is used to support the tower body, and the upper end of the tower body can be used to install a wind turbine.

[0030] Reference below Figure 1 A tower foundation 100 according to an embodiment of the present application is described.

[0031] like Figure 1 As shown, the tower foundation 100 of the embodiment of the present application includes: a bottom plate 10 , a central tube 20 , a top plate 30 and support rods 40 .

[0032] The bottom plate 10 is located in the foundation pit. In actual implementation, a cushion layer 50 may be provided in the foundation pit, and then the bottom plate 10 is placed on the cushion layer 50. The area of ​​the bottom plate 10 in the horizontal direction is larger than the area of ​​the central tube 20 and the top plate 30, so that the bottom is more stable. The bottom plate 10 may be a reinforced concrete structure with strong compressive resistance. In actual implementation, the bottom plate 10 may be designed as an annular plate, but is not limited to a flat plate structure, for example, it may have a stepped plate structure.

[0033] The lower end of the central tube 20 is connected to the bottom plate 10 , and the central tube 20 may be a reinforced concrete structure to have a strong compressive resistance.

[0034] The central tube 20 is supported on the base plate 10. The central tube 20 can be an annular structure, including a circular ring or a polygonal ring. The middle of the central tube 20 has a cavity, and at least one wall of the central tube 20 is provided with a door opening 23. The cavity is used to install some auxiliary equipment of the wind turbine, including a platform plate for maintenance.

[0035] The upper end of the central tube 20 is connected to the top plate 30, and the upper surface of the central tube 20 is connected to the lower surface of the top plate 30. The top plate 30 can be a reinforced concrete structure with strong compressive resistance. The top plate 30 is used to support the tower body above. As shown in the figure, the top plate 30 is provided with anchor bolts, which are used to connect the upper tower flange.

[0036] The support rod 40 includes a support rod body 41 and a connecting rod 44 .

[0037] The lower end of the support rod body 41 is fixedly connected to the connecting rod 44 , and the support rod body 41 and the connecting rod 44 form an acute angle, for example, the angle between the support rod body 41 and the connecting rod 44 is α, 30°≤α≤60°.

[0038] After the support rod body 41 is installed on the tower foundation 100, the support rod body 41 extends obliquely from top to bottom in a direction away from the center tube 20, and the connecting rod 44 extends in the horizontal direction. The support rod body 41 is a reinforced concrete structure, and the connecting rod 44 is a reinforced concrete structure. The upper end of the support rod body 41 is used to connect with the top plate 30, so that the horizontal and vertical support forces provided by the support rod 40 are relatively balanced. In actual implementation, the support rod 40 is a prefabricated support rod 40, and the connecting rod 44 and the support rod body 41 can be cast as one piece.

[0039] It can be understood that the inclined support rods 40 can provide an oblique support force to the top plate 30, so that the stability and balance of the top plate 30 and the tower body above are better.

[0040] like Figure 1 As shown, the base plate 10 includes: a base plate body 11 , a boss 12 , and a rib beam 13 .

[0041] The base plate body 11 may be in a flat plate shape, and the base plate body 11 is supported on the cushion layer 50. The boss 12 protrudes from the upper surface of the base plate body 11. The area of ​​the boss 12 is smaller than the area of ​​the base plate body 11. The boss 12 may be located at the center of the base plate body 11, and the center tube 20 is supported on the boss 12. That is to say, the main load-bearing area of ​​the base plate 10 is at the center position, and the structure of the boss 12 is equivalent to thickening the center area of ​​the base plate 10 to prevent the center tube 20, the top plate 30 and the tower body above from crushing the base plate 10.

[0042] The rib beam 13 extends radially outward from the outer periphery of the boss 12 , and the rib beam 13 can be flush with the boss 12 . The rib beam 13 is connected to the upper surface of the base plate body 11 , and the lower surface of the rib beam 13 is flush with the upper surface of the base plate body 11 . The rib beam 13 can be strip-shaped.

[0043] The bottom surface of the connecting rod 44 is in contact with and connected to the upper surface of the bottom plate body 11 , and the radial inner end surface of the connecting rod 44 is in contact with and connected to the radial outer end surface of the rib beam 13 .

[0044] Reference below Figure 2-Figure 4 The central tube 20 according to the embodiment of the present application is described.

[0045] like Figure 2-Figure 4 As shown, the central tube 20 includes a plurality of central tube components 20a, and the plurality of central tube components 20a are arranged along the circumferential direction, and the side walls (the first side wall 21a and the second side wall 22a) of two adjacent central tube components 20a are opposite and connected, so that the plurality of central tube components 20a can be spliced ​​into the central tube 20, and the central tube components 20a are prefabricated. In this way, when constructing the tower foundation 100, there is no need to cast the central tube 20 on site, and the central tube components 20a prefabricated in advance can be spliced ​​into the central tube 20, so that there is no need to adopt the on-site casting method, which can effectively improve the construction efficiency of the tower foundation 100 in remote or harsh areas, and is particularly suitable for use environments that are not convenient for on-site casting, and the prefabricated structure has high precision and low cost.

[0046] Next, the center tube member 20 a of the embodiment of the present application will be described.

[0047] like Figure 2 and Figure 3As shown, the central tube member 20a is bent, and the central tube member 20a includes a first section 21 and a second section 22 connected in sequence, the first section 21 has a first outer peripheral wall 21b, a first inner peripheral wall 21c and a first side wall 21a of the second section 22 that is separated from the first section 21, and the second section 22 has a second outer peripheral wall 22b, a second inner peripheral wall 22c and a second side wall 22a that is separated from the first section 21. When multiple central tube members 20a are spliced ​​into the central tube 20, the first side walls 21a and the second side walls 22a of two adjacent central tube members 20a are directly opposite.

[0048] exist Figure 2 and Figure 3 In the embodiment shown, the angle between the first section 21 and the second section 22 is 120°. Thus, the central tube 20 formed by splicing a plurality of central tube members 20a is a hexagonal tube structure. In some embodiments, the lengths of the first section 21 and the second section 22 are equal, so that the side walls (the first side wall 21a and the second side wall 22a) of the central tube member 20a are cut from the middle of the side plate of the hexagonal tube structure. Of course, the lengths of the first section 21 and the second section 22 may also be unequal. Figure 2 As shown, two central tube members 20a are provided with notches penetrating through them in the radial direction (thickness direction), and the two notches are arranged opposite to each other and connected to form a door opening 23. After a plurality of central tube members 20a are spliced ​​into a central tube 20, the two notches are spliced ​​into a door opening 23. Alternatively, the central tube 20 is a dodecagonal tube structure, and the angle between the two first inner peripheral walls 21c of the central tube member 20a is 30°, and the first inner peripheral wall 21c of the central tube member 20a is formed by cutting from the side plate of the dodecagonal tube structure.

[0049] In such Figure 2-Figure 4 In the embodiment shown, the central tube member 20a has a first prestressed pipe 24 and a second prestressed pipe 25 running through the central tube member 20a. The first prestressed pipe 24 has two ends open at the first side wall 21a and the second peripheral wall 22b, respectively. The second prestressed pipe 25 has two ends open at the second side wall 22a and the first peripheral wall 21b, respectively.

[0050] In other words, the first prestressed pipe 24 passes through the first section 21 of the central tube component 20a and extends to the second peripheral wall 22b, the second prestressed pipe 25 passes through the second section 22 of the central tube component 20a and extends to the first peripheral wall 21b, and the first prestressed pipe 24 and the second prestressed pipe 25 are used to avoid the prestressed tendons 26 so that multiple central tube components 20a can be spliced ​​into a central tube 20.

[0051] The first prestressed pipe 24 and the second prestressed pipe 25 can be linear. When the central tube components 20a are spliced ​​into the central tube 20, multiple central tube components 20a are arranged along the circumferential direction, and the side walls (the first side wall 21a and the second side wall 22a) of two adjacent central tube components 20a are opposite to each other, and are connected by the prestressed ribs 26 of the first prestressed pipe 24 that passes through one of the central tube components 20a and the second prestressed pipe 25 of the other central tube component 20a.

[0052] In other words, the first prestressed pipe 24 of an adjacent central tube component 20a is directly opposite to the second prestressed pipe 25 of an adjacent central tube component 20a, the prestressed tendons 26 sequentially penetrate the first prestressed pipe 24 and the second prestressed pipe 25, and the prestressed tendons 26 are tensioned and fixed at both ends to achieve the connection between the two adjacent central tube components 20a.

[0053] The first prestressed pipe 24 is perpendicular to the first side wall 21a, and the second prestressed pipe 25 is perpendicular to the second side wall 22a, so as to facilitate the butt connection of the prestressed pipes of the two central tube components 20a.

[0054] like Figure 3 and Figure 4 As shown, there are multiple groups of first prestressed pipes 24, which are spaced apart along the thickness direction of the first section 21, and each group includes multiple first prestressed pipes 24 spaced apart along the height direction of the central tube member 20a; there are multiple groups of second prestressed pipes 25, which are spaced apart along the thickness direction of the second section 22, and each group includes multiple second prestressed pipes 25 spaced apart along the height direction of the central tube member 20a.

[0055] The central tube component 20a of the present application is a prefabricated product. By setting the central tube component 20a of the above-mentioned structural form, the central tube component 20a can be pre-processed in an area with better processing conditions, and then transported to the area where the tower foundation 100 needs to be built to be spliced ​​into the central tube 20. There is no need to cast the central tube 20 on site, and the volume and width of the central tube component 20a are much smaller than the volume and width of the central tube 20, which is convenient for transportation, and the connection method of the tensioned prestressed tendons 26 has high splicing efficiency.

[0056] The width of the central tube component 20a in at least one direction does not exceed 3.5m. The central tube component 20a in the embodiment of the present application is prefabricated, which inevitably involves the problem of transportation. By limiting its width in a certain direction, its transportation can be facilitated. Figure 2 The central tube member 20a shown has a width W in a specific direction that is less than 3.5 m.

[0057] The central tube component 20a is pre-buried with a plurality of central tube sleeves (not shown in the figure), the central tube sleeves are open at the upper end surface and / or the lower end surface of the central tube component 20a, and the plurality of central tube sleeves are distributed at intervals.

[0058] When the center tube sleeve is open at the upper end surface of the center tube member 20a, the center tube sleeve is used to be connected to the top plate 30 at the upper end. Correspondingly, the lower end surface of the top plate 30 is provided with protruding splicing ribs. When the top plate 30 is installed on the top end of the center tube member 20a (center tube 20), the splicing ribs extend into the center tube sleeve, and the connection between the top plate 30 and the center tube member 20a (center tube 20) is achieved by grouting.

[0059] When the central tube sleeve is open at the lower end face of the central tube component 20a, the central tube sleeve is used to be connected to the bottom plate 10 at the lower end. Correspondingly, the upper end face of the bottom plate 10 is provided with protruding splicing ribs. When the central tube component 20a (central tube 20) is installed on the top plate 30, the splicing ribs extend into the central tube sleeve, and the connection between the bottom plate 10 and the central tube component 20a (central tube 20) is achieved by grouting.

[0060] The inner wall of the central tube sleeve is provided with an internal thread. Correspondingly, the plugging rib can be a screw rod, and the central tube sleeve and the plugging rib are clearance-matched, so that after the grouting treatment of the central tube sleeve is completed, the connection strength between the central tube sleeve, the plugging rib and the filler solidified after grouting is large in all directions.

[0061] The central tube component 20a also includes a central tube anchor bar embedded in the central tube component 20a, which is fixedly connected to the central tube sleeve. The central tube anchor bar can be fixedly connected to the bottom of the central tube sleeve, and the central tube anchor bar is used to increase the connection strength between the central tube sleeve and the concrete structure.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0063] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A central tube component of a tower foundation, characterized in that: The central tube member is bent and includes a first section and a second section connected in sequence, the first section has a first peripheral wall and a first side wall away from the second section, the second section has a second peripheral wall and a second side wall away from the first section, the central tube member has a first prestressed pipe and a second prestressed pipe running through the central tube member, the two ends of the first prestressed pipe are open at the first side wall and the second peripheral wall respectively, the two ends of the second prestressed pipe are open at the second side wall and the first peripheral wall respectively, the first prestressed pipe is perpendicular to the first side wall, and the second prestressed pipe is perpendicular to the second side wall; The first prestressed pipes are in a plurality of groups, and the plurality of groups of the first prestressed pipes are arranged spaced apart along the thickness direction of the first section, and each group includes a plurality of the first prestressed pipes spaced apart along the height direction of the central tube member; The second prestressed pipes are in a plurality of groups, and the plurality of groups of the second prestressed pipes are spaced apart along the thickness direction of the second section, and each group includes a plurality of the second prestressed pipes spaced apart along the height direction of the central tube component.

2. The central tube member of the tower foundation according to claim 1, characterized in that: The included angle between the first section and the second section is 120° or 30°.

3. The central tube component of the tower foundation according to any one of claims 1 to 2, characterized in that: The central tube component is pre-buried with a plurality of central tube sleeves, the central tube sleeves are open at the upper end surface and / or the lower end surface of the central tube component, and the plurality of central tube sleeves are distributed at intervals.

4. The central tube member of the tower foundation according to claim 3, characterized in that: It also includes a central tube anchor bar embedded in the central tube component, and the central tube anchor bar is fixedly connected to the central tube sleeve.

5. The central tube member of the tower foundation according to claim 3, characterized in that: The inner peripheral wall of the central tube sleeve is provided with an internal thread.

6. A central tube of a tower foundation, characterized in that: It comprises a plurality of central tube components as described in any one of claims 1 to 5, wherein the plurality of central tube components are arranged along the circumferential direction, and the side walls of two adjacent central tube components are directly opposite, and are connected by prestressed tendons of a first prestressed pipe running through one of the central tube components and a second prestressed pipe running through another of the central tube components.

7. The central tube of the tower foundation according to claim 6, characterized in that: Two of the central tube components are provided with notches that penetrate through the components in the radial direction, and the two notches are arranged opposite to each other and connected to form a door opening.

8. A tower foundation, characterized in that: It has a central tube as described in claim 6 or 7.

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