Lattice type tower pile cylinder combined foundation and tower

Abstract

The utility model provides a lattice type tower pile-cylinder combined foundation. The lattice type tower pile-cylinder combined foundation comprises a cylinder-shaped foundation, pile bodies, connecting rods and connecting assemblies. The multiple pile bodies are evenly arranged in the circumferential direction of the cylindrical foundation. The connecting rods are in one-to-one correspondence with the pile bodies, the connecting rods are mounted on the pile bodies, and the other ends of the connecting rods are mounted on the cylindrical foundation; the connecting assembly is connected with the upper end of the pile body and a bottom supporting rod of the lattice type tower. Load of the barrel-shaped foundation is transmitted to the pile bodies on the periphery through the connecting rods, the pile bodies provide large anti-bending bearing capacity for the barrel-shaped foundation, and the burial depth of the barrel-shaped foundation is reduced. And therefore, the lattice type tower can be supported and fixed by adopting one barrel-shaped foundation, and the problems that the lattice type tower has high requirements on the bearing capacity of the foundation and the land acquisition area is large are solved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, specifically to a lattice-type tower pile-tube combined foundation and tower. Background Technology

[0002] Wind turbine foundations are a crucial component of wind farm construction, affecting not only the safe and reliable operation of the wind farm but also its investment. As wind farm construction expands across more regions, natural foundations in areas with poor engineering properties, such as cohesive soil, silt, loess, and fill, often fail to meet the requirements for wind turbine foundation construction, necessitating foundation treatment.

[0003] The rapid updates and iterations of large-megawatt wind turbines have led to increased requirements for the bearing capacity of low foundations and high requirements for the bearing capacity of the foundation. Conventional lattice tower foundations consist of four foundations with a diameter of 7-10m connected to the bottom of the tower. The struts at the bottom of the lattice tower are all installed on the corresponding foundations to support the lattice tower. This support method requires a large land area. Utility Model Content

[0004] In view of the above-mentioned problems in the existing technology, the technical problem to be solved by this utility model is that: the conventional lattice tower foundation is to connect four foundations to the bottom of the tower, and the struts at the bottom of the lattice tower are all installed on the corresponding foundations to support the lattice tower. This support method requires a large land area.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a lattice-type tower pile-tube combined foundation, comprising:

[0006] cylindrical foundation;

[0007] The piles, a plurality of the piles, are evenly arranged along the circumferential direction of the cylindrical foundation;

[0008] A connecting rod, each corresponding to a pile body, is installed on the pile body, with the other end of the connecting rod installed on a cylindrical foundation; and

[0009] A connecting component that connects the upper end of the pile to the bottom strut of the lattice tower.

[0010] Preferably, the connecting assembly includes: a vertical connector and an inclined connector; one end of the vertical connector and the inclined connector are connected and fixed to each other; the other end of the vertical connector is installed on the upper end of the pile, and the other end of the inclined connector is installed on the bottom support of the lattice tower; and the inclined connector is connected to the lattice...

[0011] Preferably, the diameters of the vertical connector and the inclined connector are the same as the diameter of the pile body.

[0012] Preferably, the inclined connector includes: an inclined steel pipe, an upper flange, and a lower flange; the inclined steel pipe is installed on the bottom support rod of the lattice tower through the upper flange; the inclined steel pipe is installed on the upper end of the pile through the lower flange.

[0013] Preferably, the inclined connector further includes: an anchor plate and a side plate; the anchor plate is fixedly installed in the middle of the inclined steel pipe, and the anchor plate is perpendicular to the circumference of the inclined steel pipe; the side plate is detachably installed on the side of the inclined steel pipe to open or close the inclined steel pipe.

[0014] Preferably, the upper part of the cylindrical base is provided with a cavity, and an electrical structure is provided inside the cavity.

[0015] Preferably, the end of the connecting rod furthest from the cylindrical foundation is inclined downwards.

[0016] Preferably, a pile shoe is installed at the lower end of the pile.

[0017] Preferably, a triangular cone is installed in the circumferential direction of the pile shoe.

[0018] Preferably, the pile shoe has multiple ventilation holes in the circumferential direction.

[0019] A tower, comprising: a lattice-type tower pile-tube composite foundation as described in any one of the above.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] 1. In this utility model, during the construction stage of the cylindrical foundation, the bottom and surrounding concrete are poured first, and then the inside of the cylinder is filled with sand and gravel, followed by the laying of the top concrete layer. The amount of steel reinforcement is small, and the construction is convenient. The load of the cylindrical foundation is transferred to the surrounding piles through the connecting rods. The piles provide the cylindrical foundation with a large bending bearing capacity, reducing the embedment depth of the cylindrical foundation. Thus, a single cylindrical foundation can support and fix the lattice tower, solving the problem that the lattice tower requires high foundation bearing capacity and a large land area.

[0022] 2. In this utility model, the side plate is detachably installed at the opening on the side of the inclined steel pipe, thereby opening the inclined steel pipe and anchoring the prestressed lattice tower to the anchor plate, avoiding internal tensioning of conventional foundations, making construction convenient and unrestricted.

[0023] 3. In this utility model, by setting the electrical structure inside the cavity of the cylindrical foundation, the site area can be saved more than that of the traditional lattice foundation, thereby reducing the land acquisition area.

[0024] 4. In this utility model, the load of the cylindrical foundation is transferred to the pile body through the connecting rod. The inclined connecting rod can provide the cylindrical foundation with a larger bending bearing capacity, improve the overturning resistance, and enhance the seismic performance. The connection rod and the pile body are filled with high-strength grout to ensure the integrity of the foundation and the force transmission performance.

[0025] 5. In this utility model, the pile shoe can guide and seal the pile body during the sinking construction, and the bottom pile shoe can improve the bearing capacity of the pile body during the operation stage; the triangular cone can easily pierce the soil, reduce soil resistance, and reduce the difficulty of driving the pile body; the ventilation hole can realize the air release during grouting. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0027] Figure 1 A three-dimensional structural diagram of the lattice-type tower pile-tube combined foundation provided by this utility model.

[0028] Figure 2 A schematic diagram of the inclined connector structure provided by this utility model.

[0029] Figure 3 This is a three-dimensional structural diagram of the pile boot provided by this utility model.

[0030] Attached reference numerals: 1-Cylindrical foundation, 11-Cavity, 12-Electrical structure, 2-Pile body, 3-Connecting rod, 4-Vertical connector, 5-Inclined connector, 51-Inclined steel pipe, 52-Upper flange, 53-Lower flange, 54-Anchor plate, 55-Side plate, 6-Pile shoe, 61-Triangular pyramid, 62-Ventilation hole. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0032] In this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] See Figures 1-3 The present invention provides an embodiment of a lattice-type tower pile-tube composite foundation, comprising: a cylindrical foundation 1, piles 2, connecting rods 3, and connecting components. Multiple piles 2 are evenly arranged along the circumferential direction of the cylindrical foundation 1. Specifically, the piles 2 can be configured as straight piles or inclined piles depending on the soil conditions. Straight piles can be used for soils with uniform geological conditions, while inclined piles can be used for foundations with rock at the bottom of the soil layer, difficult driving, or weak soil bearing capacity. The connecting rods 3 correspond one-to-one with the piles 2, and are installed on the piles 2. The other end of the connecting rods 3 is installed on... On the cylindrical foundation 1; furthermore, the end of the connecting rod 3 away from the cylindrical foundation 1 is inclined downwards; the load of the cylindrical foundation 1 is transferred to the pile 2 through the connecting rod 3. Through the inclined connecting rod 3, the cylindrical foundation 1 can be provided with a larger bending bearing capacity, the overturning resistance is improved, and the seismic performance is enhanced; specifically, the inclination of the connecting rod 3 should not exceed 45°, and the connection between the connecting rod 3 and the pile 2 is filled with high-strength grout to ensure the integrity of the foundation and the force transmission performance; the connecting component connects the upper end of the pile 2 to the bottom support of the lattice tower.

[0035] In practice, during the construction of the cylindrical foundation, the bottom and surrounding concrete are poured first, then the inside of the cylinder is filled with sand and gravel, followed by a 100mm thick top concrete layer. This reduces the amount of steel reinforcement required, making construction convenient. The load of the cylindrical foundation 1 is transferred to the surrounding piles 2 through the connecting rods 3. The piles 2 provide the cylindrical foundation 1 with a large bending bearing capacity, reducing the embedment depth of the cylindrical foundation 1. Thus, a single cylindrical foundation can support and fix the lattice tower, solving the problems of high foundation bearing capacity requirements and large land acquisition area for lattice towers.

[0036] See Figures 1-3 In other embodiments, the connecting assembly includes a vertical connector 4 and an inclined connector 5; one end of the vertical connector 4 and the inclined connector 5 are connected and fixed to each other; the other end of the vertical connector 4 is installed on the upper end of the pile body 2, and the other end of the inclined connector 5 is installed on the bottom support rod of the lattice tower; and the inclined connector 5 is arranged parallel to the bottom support rod of the lattice tower. The lattice tower is fixed by the inclined connector 5, which is parallel to the bottom support rod of the lattice tower, thus making it easier to install and fix the lattice tower. Furthermore, the diameters of the vertical connector 4 and the inclined connector 5 are the same as the diameter of the pile body 2; specifically, the bottom of the vertical connector 4 is inserted into the pile body 2, thereby facilitating the bearing of the load of the upper wind turbine.

[0037] See Figures 1-3 In other embodiments, the inclined connector 5 includes: an inclined steel pipe 51, an upper flange 52, and a lower flange 53; the inclined steel pipe 51 is installed on the bottom support of the lattice tower via the upper flange 52; the inclined steel pipe 51 is installed on the upper end of the pile body 2 via the lower flange 53. The upper flange 52 and lower flange 53 facilitate the installation and fixing of the inclined steel pipe 51. Furthermore, the inclined connector 5 also includes: an anchor plate 54 and a side plate 55; the anchor plate 54 is fixedly installed in the middle of the inclined steel pipe 51, and the anchor plate 54 is perpendicular to the circumference of the inclined steel pipe 51; the side plate 55 is detachably installed on the side of the inclined steel pipe 51 to open or close the inclined steel pipe 51.

[0038] In practice, an opening is provided on the side of the inclined steel pipe 51, and the side plate 55 is detachably installed at the opening on the side of the inclined steel pipe 51 by bolts, so as to open the inclined steel pipe 51, and then the lattice tower prestressed anchor is fixed to the anchor plate 54, avoiding internal tensioning of conventional foundations, making construction convenient and unrestricted.

[0039] See Figures 1-3In other embodiments, a cavity 11 is provided on the upper part of the cylindrical foundation 1, and an electrical structure 12 is provided inside the cavity 11. In specific implementation, a cavity 11 with a diameter of 5-8m and a height of 1.5-4m is provided on the upper part of the cylindrical foundation; by placing the electrical structure 12 inside the cavity 11 of the cylindrical foundation 1, the site area can be saved more than that of the traditional lattice foundation, thereby reducing the land acquisition area.

[0040] See Figures 1-3 In another embodiment, a pile shoe 6 is installed at the lower end of the pile body 2. The pile shoe 6 serves to guide and seal the pile body 2 during sinking construction, and its bottom position improves the bearing capacity of the pile body 2 during operation. Specifically, the pile shoe 6 has a height of 0.3-0.6m and a wall thickness of 10-40mm. Furthermore, a triangular cone 61 is installed circumferentially on the pile shoe 6. The triangular cone 61 facilitates piercing the soil, reduces soil resistance, eases the difficulty of driving the pile body 2, and improves the bearing capacity of the pile body 2. Furthermore, multiple ventilation holes 62 are provided circumferentially on the pile shoe 6. These ventilation holes 62 allow for air release during grouting.

[0041] See Figures 1-3 Another embodiment of this utility model is a tower, comprising: the lattice-type tower pile-tube combination foundation described in any of the above embodiments.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A lattice-type tower pile-tube composite foundation, characterized in that, include: cylindrical foundation; The piles, a plurality of the piles, are evenly arranged along the circumferential direction of the cylindrical foundation; A connecting rod, which corresponds one-to-one with the pile body and is installed on the pile body, with the other end of the connecting rod installed on the cylindrical foundation; and A connecting component that connects the upper end of the pile to the bottom strut of the lattice tower; The connecting assembly includes: a vertical connector and an inclined connector; one end of the vertical connector and the inclined connector are connected and fixed to each other; the other end of the vertical connector is installed on the upper end of the pile body, and the other end of the inclined connector is installed on the bottom support of the lattice tower; and the inclined connector is connected to the lattice.

2. The lattice-type tower pile-tube composite foundation according to claim 1, characterized in that, The inclined connector includes: an inclined steel pipe, an upper flange, and a lower flange; the inclined steel pipe is installed on the bottom support rod of the lattice tower through the upper flange; the inclined steel pipe is installed on the upper end of the pile through the lower flange.

3. The lattice-type tower pile-tube composite foundation according to claim 2, characterized in that, The inclined connector further includes: an anchor plate and a side plate; the anchor plate is fixedly installed in the middle of the inclined steel pipe, and the anchor plate is perpendicular to the circumference of the inclined steel pipe; the side plate is detachably installed on the side of the inclined steel pipe to open or close the inclined steel pipe.

4. The lattice-type tower pile-tube composite foundation according to claim 1, characterized in that, The cylindrical base has a cavity at its upper part, and an electrical structure is installed inside the cavity.

5. The lattice-type tower pile-tube composite foundation according to claim 1, characterized in that, The end of the connecting rod furthest from the cylindrical foundation is inclined downwards.

6. The lattice-type tower pile-tube composite foundation according to claim 1, characterized in that, A pile shoe is installed at the lower end of the pile.

7. The lattice-type tower pile-tube composite foundation according to claim 6, characterized in that, A triangular cone is installed in the circumferential direction of the pile shoe.

8. The lattice-type tower pile-tube composite foundation according to claim 6, characterized in that, The pile shoe has multiple ventilation holes in its circumferential direction.

9. A tower, characterized in that, include: The lattice-type tower pile-tube composite foundation as described in any one of claims 1-8.

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