Adjustable photovoltaic support foundation and deviation correction construction method

Abstract

The present invention relates to an adjustable photovoltaic support foundation and a correction construction method, which belongs to the technical field of photovoltaic support foundations and solves the problem of high cost of existing foundation correction construction. The invention comprises a spatial truss structure composed of multiple basic units, wherein the basic unit is a mesh structure composed of multiple prefabricated cross-plate foundations and multiple prefabricated straight-plate foundations. The prefabricated cross-plate foundation is passed through a pile body through a reserved pile hole, a pile cap is fixed to the top of the pile body, a support column foot is provided on the top surface of the pile cap, a cover plate is provided above the pile cap, the cover plate is provided with a through hole corresponding to the support column foot, a first externally threaded rod is passed through the pile cap and the cover plate, the bottom end of the first externally threaded rod is fixedly connected to the prefabricated cross-plate foundation, a first threaded locking component is provided between the first externally threaded rod and the pile cap, and a second threaded locking component is provided between the first externally threaded rod and the cover plate. The photovoltaic support foundation of the present invention solves the problem of high cost of local correction of the photovoltaic support foundation.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic support foundations, and in particular to an adjustable photovoltaic support foundation and a deviation correction construction method. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] With the development of clean energy, the number and construction areas of photovoltaic power stations are increasing. Installing photovoltaic power generation systems in spoil dumps can achieve the goals of conserving land and developing new energy. The soil in these sites is highly random and uneven, making them prone to uneven settlement. This can lead to problems with photovoltaic structures, such as differential settlement, tilt, and localized tilt. Existing prefabricated photovoltaic foundations have poor integrity. When soil settles, the foundations are prone to tilt and localized tilt, adversely affecting the normal use and safety of photovoltaic structures.

[0004] Patent application CN116657645A discloses a mesh strip photovoltaic foundation structure, in which the cross-connected foundation and the straight-connected foundation are fixedly connected after concrete pouring. However, when the above scheme is adopted, if the soil undergoes local settlement, the straight-connected foundation is prone to deformation and damage, and it cannot be replaced after damage. Moreover, the above patent application does not have a practical solution for correction and adjustment. When the soil undergoes local settlement, if the cross-connected foundation is lifted by lifting equipment for correction, the settlement of the soil will be further aggravated after the lifting equipment enters the construction site. Moreover, the construction cost of using lifting equipment for correction is high, and the construction environment may limit the use of lifting equipment. Therefore, the foundation structure disclosed in the above patent application is not suitable for geological conditions where local uneven settlement is prone to occur and the underground conditions are complex and highly random. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an adjustable photovoltaic bracket foundation and correction construction method. When settlement occurs, there is no need to use lifting equipment for correction, which reduces the construction cost of correction and has good operability of correction.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In the first aspect, an embodiment of the present invention provides an adjustable photovoltaic bracket foundation, comprising a spatial truss structure composed of a plurality of basic units, wherein the basic unit is a mesh structure composed of a plurality of prefabricated cross-plate foundations and a plurality of prefabricated straight-plate foundations, the prefabricated cross-plate foundation having a pile body passing through a reserved pile hole, a pile cap being fixed to the top of the pile body, a bracket column foot being provided on the top surface of the pile cap, a cover plate being provided above the pile cap, the cover plate being provided with a through hole corresponding to the bracket column foot, a first externally threaded rod passing through the pile cap and the cover plate, the bottom end of the first externally threaded rod being fixedly connected to the prefabricated cross-plate foundation, a first threaded locking component being provided between the first externally threaded rod and the pile cap, and a second threaded locking component being provided between the first externally threaded rod and the cover plate.

[0008] Optionally, the first threaded locking component adopts a first locking nut, and the first externally threaded rod sections above and below the pile cap are threadedly connected with first locking nuts, the upper first locking nut presses the upper surface of the pile cap, and the lower first locking nut presses the lower surface of the pile cap.

[0009] Optionally, the second threaded locking component adopts a second locking nut, and the first externally threaded rod sections above and below the cover plate are threadedly connected with second locking nuts, the upper second locking nut presses the upper surface of the cover plate, and the lower second locking nut presses the lower surface of the cover plate.

[0010] Optionally, the first externally threaded rod segment between the pile cap and the prefabricated cross-slab foundation is threadedly connected with a third threaded locking component.

[0011] Optionally, the third threaded locking component adopts a third locking nut, and the third locking nut is pressed against the upper surface of the prefabricated cross plate foundation.

[0012] Optionally, the first external threaded rod extends into the prefabricated cross plate foundation and is filled with slurry between the first external threaded rod and the prefabricated cross plate foundation. The bottom surface of the prefabricated cross plate foundation is provided with a first sinking groove, and the bottom end of the first external threaded rod is provided with a first baffle, which is in contact with the bottom groove surface of the first sinking groove.

[0013] Optionally, a boss is provided on the upper end surface of the prefabricated straight plate foundation, and correspondingly, a groove matching the boss is provided on the end surface of the prefabricated cross plate foundation for cooperating with the prefabricated straight plate foundation, and the boss is inserted into the groove to realize the connection between the prefabricated straight plate foundation and the prefabricated cross plate foundation. A second externally threaded rod passes through the prefabricated straight plate foundation and the prefabricated cross plate foundation at the connection position, and the second externally threaded rod is provided with a fourth threaded locking component to lock the second externally threaded rod and the boss.

[0014] Optionally, the fourth threaded locking component adopts a fourth locking nut, the fourth locking nut is threadedly connected to the second externally threaded rod, and the fourth locking nut is pressed against the upper surface of the boss.

[0015] Optionally, a second baffle is provided at the bottom end of the second externally threaded rod, and a second recessed groove is provided on the bottom surface of the prefabricated cross plate foundation at the insertion position, and the second baffle is in contact with the bottom groove surface of the second recessed groove.

[0016] Optionally, the pile body is a steel pipe pile, and the diameter of the reserved pile hole on the prefabricated cross plate foundation is larger than the outer diameter of the steel pipe pile.

[0017] In a second aspect, an embodiment of the present invention provides a method for correcting the deviation of the adjustable photovoltaic support foundation according to the first aspect, comprising the following steps:

[0018] Insert a jacking device between the pile cap and the cover plate at the location where settlement occurs;

[0019] Loosening the first thread locking component between the pile cap and the first externally threaded rod;

[0020] The cover plate is lifted by the lifting equipment, and the cover plate lifts the settled prefabricated cross plate through the first external threaded rod. After lifting to the target height, fine sand is backfilled under the lifted prefabricated cross plate foundation and compacted, and then the first threaded locking component is re-tightened.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The adjustable photovoltaic bracket foundation of the present invention is provided with a pile body, a pile cap and a cover plate, the pile cap and the cover plate are passed through a first externally threaded rod, the bottom end of the first externally threaded rod is connected to the prefabricated cross-plate foundation, a first threaded locking component is provided between the first externally threaded rod and the pile cap, and a second threaded locking component is provided between the first externally threaded rod and the cover plate. When the prefabricated cross-plate foundation sinks due to local settlement of the soil in the later stage, the first threaded locking component can be loosened, and a jacking device can be inserted between the pile cap and the cover plate. The jacking device can lift the settled prefabricated cross-plate foundation to achieve correction. The correction can be achieved by using the jacking device without the need for lifting equipment such as a crane. The construction cost of the correction is low, and further settlement of the site caused by the entry of large equipment such as a crane into the construction site is avoided. The use cost of the jacking equipment is low, and the construction environment will not affect the use of the jacking equipment, so the operability of the correction is good.

[0023] 2. The adjustable photovoltaic bracket foundation of the present invention, the prefabricated cross plate foundation and the prefabricated straight plate foundation are connected through the boss and the groove, and are fixed by the second external threaded rod and the fourth threaded locking component. When the prefabricated straight plate foundation is damaged due to settlement, the fourth threaded locking component can be loosened, the damaged straight plate foundation can be lifted, and the damaged straight plate foundation can be removed, thereby realizing the replacement of the prefabricated straight plate foundation and ensuring the overall structural strength of the foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present invention;

[0026] Figure 2 This is a front view of the overall structure of Example 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the assembly of a prefabricated cross slab foundation and a prefabricated straight slab foundation according to Example 1 of the present invention;

[0028] Figure 4 This is a front view of the assembly of a prefabricated cross-plate foundation and a prefabricated straight-plate foundation according to Example 1 of the present invention;

[0029] Figure 5 This is a schematic diagram of the correction principle of embodiment 1 of the present invention;

[0030] Among them, 1. Prefabricated cross plate foundation, 2. Prefabricated straight plate foundation, 2-1. Boss, 3. Second external threaded rod, 4. Fourth locking nut, 5. Gasket, 6. Slurry, 7. Second sink, 8. Second baffle, 9. Steel pipe pile, 10. Pile cap, 11. Cover plate, 12. First external threaded rod, 13. First locking nut, 14. Second locking nut, 15. Third locking nut, 16. Jack, 17. Bracket column base. DETAILED DESCRIPTION

[0031] For the convenience of description, if the words "upper" and "lower" appear in the present invention, they only indicate that they are consistent with the upper and lower directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0032] Example 1

[0033] This embodiment provides an adjustable photovoltaic support foundation, such as Figure 1-Figure 2 As shown, it includes multiple basic units. The basic units adopt a mesh structure composed of multiple prefabricated cross-plate foundations 1 and prefabricated straight-plate foundations 2. Multiple basic units constitute a spatial truss structure. With this arrangement, the entire photovoltaic structure forms an overall structural system, forming a relatively stable whole, which can better resist vertical loads and horizontal loads, and improve the pull-out resistance of the entire photovoltaic structure.

[0034] The foundation unit includes a plurality of prefabricated cross-plate foundations 1, and a prefabricated straight-plate foundation 2 is provided between adjacent prefabricated cross-plate foundations 1. The plurality of prefabricated cross-plate foundations 1 and the plurality of prefabricated straight-plate foundations 2 together form a mesh structure.

[0035] In this embodiment, the prefabricated cross-plate foundation 1 and the prefabricated straight-plate foundation 2 both adopt reinforced concrete structures. Preferably, the prefabricated cross-plate foundation 1 is provided with prestressed channels along the transverse and longitudinal directions, and the prefabricated straight-plate foundation 2 is provided with prestressed channels arranged along the longitudinal direction.

[0036] The longitudinal direction refers to the length direction of the prefabricated straight slab foundation 2, and the transverse direction is perpendicular to the longitudinal direction.

[0037] like Figure 3 As shown, the two end faces of the prefabricated straight plate foundation 2 perpendicular to the length direction are used to connect with the prefabricated cross plate foundation 1. As connecting end faces, the upper part of the connecting end faces is provided with a boss 2-1. Correspondingly, the end of the prefabricated cross plate foundation 1 used for connecting with the prefabricated straight plate foundation 2 is provided with a groove corresponding to the boss 2-1. The boss 2-1 and the groove are plug-in matched to realize the plug-in connection between the prefabricated cross plate foundation 1 and the prefabricated straight plate foundation 2.

[0038] The prefabricated straight plate foundation 2 and the prefabricated cross plate foundation 1 are locked and fixed at the plug-in position by a plurality of second externally threaded rods 3 and a fourth thread locking component.

[0039] Preferably, four second externally threaded rods 3 and four fourth thread locking components are provided.

[0040] In this embodiment, the second externally threaded rod 3 passes through the boss 2-1 and the prefabricated cross plate foundation 1 through a through hole provided at the connection position of the boss 2-1 and the prefabricated cross plate foundation 1, and the second externally threaded rod 3 and the hole surface of the through hole are filled with slurry 6. A second sink groove 7 is provided at a position corresponding to the bottom surface of the prefabricated cross plate foundation 1 and the second externally threaded rod 3. Correspondingly, a second baffle 8 is fixed to the bottom end of the second externally threaded rod 3, and the second baffle 8 is in contact with the bottom groove surface of the second sink groove 7.

[0041] The rod section of the second external threaded rod 3 located above the boss 2-1 is threadedly connected to a fourth threaded locking component, and the fourth threaded locking component adopts a fourth locking nut 4. The fourth locking nut 4 is pressed against the upper surface of the boss 2-1 to achieve a fixed connection between the prefabricated cross plate foundation 1 and the prefabricated straight plate foundation 2.

[0042] Preferably, a gasket 5 is provided between the fourth locking nut 4 and the upper surface of the boss 2 - 1 .

[0043] With this setting, when the soil settles in the later stage and the prefabricated straight plate foundation 2 is damaged, the fourth locking nut 4 and the gasket 5 are removed, and the damaged prefabricated straight plate foundation 2 is lifted using a lifting equipment. The damaged prefabricated straight plate foundation 2 can be removed, and then a new prefabricated straight plate foundation 2 is hoisted so that the second externally threaded rod 3 passes through the through hole of the boss 2-1 of the new prefabricated straight plate foundation 2, and then the gasket 5 is inserted and the fourth locking nut 4 is tightened. At this time, the replacement of the prefabricated straight plate foundation 2 is completed.

[0044] A pile hole is reserved at the center of the prefabricated cross-plate foundation 1, and a pile body passes through the prefabricated cross-plate foundation 1 through the pile hole. Preferably, the pile body adopts a steel pipe pile 9, and the top of the steel pipe pile 9 passes through the prefabricated cross-plate foundation 1 through the pile hole.

[0045] Furthermore, the diameter of the pile hole is larger than the outer diameter of the steel pipe pile 9 .

[0046] A pile cap 10 is welded and fixed to the top of the steel pipe pile 9 , and the center position of the pile cap 10 is welded and fixed to the bottom end of the bracket column foot 17 , which is used to connect the photovoltaic bracket.

[0047] A cover plate 11 is provided above the pile cap 10. The shape and size of the cover plate 11 are the same as those of the pile cap 10 and are coaxially arranged. A through hole corresponding to the bracket column foot 17 is provided in the center of the cover plate 11 to prevent the cover plate 11 from interfering with the connection between the bracket column foot 17 and the photovoltaic bracket. Preferably, the cover plate 11 is made of steel, and a plurality of corresponding openings are provided on the cover plate 11 and the pile cap 10. The plurality of openings on the pile cap 10 are located on the outer periphery of the bracket column foot 17. A first externally threaded rod 12 passes through the openings of the cover plate 11 and the pile cap 10. After the first externally threaded rod 12 passes through the cover plate 11 and the pile cap 10 in sequence, its bottom end is connected to the prefabricated cross plate foundation 1.

[0048] Specifically, the prefabricated cross-plate foundation 1 is provided with a fixed channel for the first externally threaded rod 12 to extend into, the bottom end of the first externally threaded rod 12 extends into the fixed channel and is filled with slurry between the bottom end of the first externally threaded rod 12 and the inner side surface of the fixed channel, and a first sinking groove is provided at a position corresponding to the bottom surface of the prefabricated cross-plate foundation 1 and the first externally threaded rod 12, and a first baffle is provided at the bottom end of the first externally threaded rod 12. After the first externally threaded rod 12 passes through the prefabricated cross-plate foundation 1, the first baffle is fitted with the bottom groove surface of the first sinking groove.

[0049] A first thread locking component is provided between the pile cap 10 and the first externally threaded rod 12. In this embodiment, the first thread locking component adopts two first locking nuts 13, and the first locking nuts 13 are threadedly connected to the first externally threaded rod 12. Specifically, first locking nuts 13 are provided above and below the pile cap 10. The upper first locking nut 13 is pressed against the upper surface of the pile cap 10, and the lower first locking nut 13 is pressed against the lower surface of the pile cap 10, thereby realizing the locking and fixation of the pile cap 10 and the first externally threaded rod 12.

[0050] A second threaded locking component is provided between the cover plate 11 and the first externally threaded rod 12. In this embodiment, the second threaded locking component adopts two second locking nuts 14, and the second locking nuts 14 are threadedly connected to the first externally threaded rod 12. Specifically, second locking nuts 14 are provided above and below the cover plate 11. The upper second locking nut 14 is pressed against the upper surface of the cover plate 11, and the lower second locking nut 14 is pressed against the lower surface of the cover plate 11, thereby realizing the locking and fixation of the cover plate 11 and the first externally threaded rod 12.

[0051] A third threaded locking component is also threadedly connected to the first externally threaded rod 12 section between the pile cap 10 and the prefabricated cross plate foundation 1. The third threaded locking component adopts a third locking nut 15, which is pressed against the top surface of the prefabricated cross plate foundation 1.

[0052] Preferably, a gasket is provided between the first locking nut 13 and the surface of the pile cap 10 , a gasket is provided between the second locking nut 14 and the cover plate 11 , and a gasket is provided between the third locking nut 15 and the upper surface of the prefabricated cross-plate foundation 1 .

[0053] The construction method of the adjustable photovoltaic support foundation of this embodiment includes the following steps:

[0054] Step 1: Construct steel pipe piles 9 and transport the prefabricated cross slab foundation 1 and prefabricated straight slab foundation 2 prepared in advance in the factory to the construction site.

[0055] The construction method of the steel pipe pile 9 can adopt the existing technology and will not be described in detail here.

[0056] Step 2: Hoist the prefabricated cross plate foundation 1 and the prefabricated straight plate foundation 2, and pass the steel pipe pile 9 through the prefabricated cross plate foundation 1. After the prefabricated cross plate foundation 1 and the prefabricated straight plate foundation 2 are plugged in, pass the second external threaded rod 3 through the plugging position of the prefabricated cross plate foundation 1 and the prefabricated straight plate foundation 2, and then grouting is performed between the second external threaded rod 3 and the through-hole walls of the prefabricated cross plate foundation 1 and the prefabricated straight plate foundation 2, and then install the fourth locking nut 4 and the gasket 5. After the construction of the prefabricated cross plate foundation 1 and the prefabricated straight plate foundation 2 is completed, weld the pile cap 10 on the top of the steel pipe pile 9, and weld the bracket column foot 17 on the pile cap 10.

[0057] Step 3: Pass the first external threaded rod 12 through the prefabricated cross plate foundation 1, pile cap 10, and cover plate 11, grout the bottom end of the first external threaded rod 12 between the fixed channels of the prefabricated cross plate foundation 1, and tighten the first locking nut 13, the second locking nut 14, and the third locking nut 15.

[0058] Step 4: Use the same method to sequentially construct multiple prefabricated cross-plate foundations 1, prefabricated straight-plate foundations 2 and corresponding cover plates 11, pile caps 10, etc. until the entire adjustable photovoltaic support foundation is completed.

[0059] Example 2

[0060] This embodiment provides a deviation correction construction method for the adjustable photovoltaic support foundation described in Example 1, such as Figure 5 As shown, the following steps are included:

[0061] Step a: A lifting device is placed between the cover plate 11 and the pile cap 10 of the prefabricated cross-plate foundation 1 in the settlement area. In this embodiment, the lifting device can be a jack 16.

[0062] Step b: Loosen the first locking nut 13 and the third locking nut 15 .

[0063] Step c: The jack 16 is used for lifting. The jack 16 drives the prefabricated cross-plate foundation 1 to be lifted through the cover plate 11 and the first external threaded rod 12 until the prefabricated cross-plate foundation 1 is lifted to the target height. Then, fine sand is backfilled under the prefabricated cross-plate foundation 1 and compacted. Finally, the first locking nut 13 and the third locking nut 15 are re-tightened to complete the correction construction of the adjustable photovoltaic bracket foundation.

[0064] In this embodiment, fine sand within a set particle size range can be selected according to actual needs during backfilling, which will not be described in detail here.

[0065] The adjustable photovoltaic bracket foundation and correction construction method of this embodiment is adopted. When correcting the deviation, a jack 16 can be placed between the pile cap 10 and the cover plate 11. The steel pipe pile 9 and the pile cap 10 can provide supporting reaction force. The jack 16 can lift the prefabricated cross plate foundation 1 that has settled to achieve correction. The correction can be achieved by using the jack 16 without the need for large lifting equipment such as cranes. The construction cost of the correction is low, and further settlement of the site caused by large equipment such as cranes entering the construction site is avoided. The jack 16 has a low cost of use, and the construction environment will not affect the use of the jack 16. Therefore, the operability of the correction is good.

[0066] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An adjustable photovoltaic support foundation, comprising a spatial truss structure composed of a plurality of basic units, wherein the basic unit is a mesh structure composed of a plurality of prefabricated cross-plate foundations and a plurality of prefabricated straight-plate foundations, characterized in that: The prefabricated cross-plate foundation is provided with a pile body passing through a reserved pile hole, a pile cap is fixed to the top of the pile body, a bracket column foot is provided on the top surface of the pile cap, the pile body can support the photovoltaic bracket through the pile cap and the bracket column foot, a cover plate is provided above the pile cap, the cover plate is provided with a through hole corresponding to the bracket column foot, a first externally threaded rod is passed through the pile cap and the cover plate, the bottom end of the first externally threaded rod is fixedly connected to the prefabricated cross-plate foundation, a first threaded locking component is provided between the first externally threaded rod and the pile cap, and a second threaded locking component is provided between the first externally threaded rod and the cover plate; The upper end surface of the prefabricated I-shaped plate foundation is provided with a boss, and the end surface of the prefabricated cross-plate foundation for cooperating with the prefabricated I-shaped plate foundation is provided with a groove matching the boss, and the boss is inserted into the groove to realize the plugging of the prefabricated I-shaped plate foundation and the prefabricated cross-plate foundation, and the prefabricated I-shaped plate foundation and the prefabricated cross-plate foundation are passed through a second externally threaded rod at the plug-in position, and the second externally threaded rod is provided with a fourth threaded locking component to lock and fix the second externally threaded rod to the boss; the fourth threaded locking component adopts a fourth locking nut, the fourth locking nut is threadedly connected to the second externally threaded rod, and the fourth locking nut is pressed against the upper surface of the boss; the bottom end of the second externally threaded rod is provided with a second baffle, and the bottom surface of the prefabricated cross-plate foundation is provided with a second groove at the plug-in position, and the second baffle is in contact with the bottom groove surface of the second groove; When the prefabricated straight plate foundation is damaged, the fourth locking nut is removed, and the damaged prefabricated straight plate contact is lifted by a lifting device, and then a new prefabricated straight plate foundation is hoisted, so that the second externally threaded rod passes through the through hole of the new prefabricated straight plate foundation boss, and then the fourth locking nut is tightened; When correcting the deviation, a jacking device is placed between the pile cap and the cover plate at the location where settlement occurs.

2. The adjustable photovoltaic support foundation according to claim 1, characterized in that: The first threaded locking component adopts a first locking nut, and the first externally threaded rod sections above and below the pile cap are both threadedly connected with the first locking nuts. The upper first locking nut presses the upper surface of the pile cap, and the lower first locking nut presses the lower surface of the pile cap.

3. The adjustable photovoltaic support foundation according to claim 1, characterized in that: The second threaded locking component adopts a second locking nut, and the first external threaded rod sections above and below the cover plate are threadedly connected with second locking nuts. The upper second locking nut presses the upper surface of the cover plate, and the lower second locking nut presses the lower surface of the cover plate.

4. The adjustable photovoltaic support foundation according to claim 1, characterized in that: The first external threaded rod section between the pile cap and the prefabricated cross plate foundation is threadedly connected with a third threaded locking component.

5. The adjustable photovoltaic support foundation according to claim 4, characterized in that: The third thread locking component adopts a third locking nut, and the third locking nut is pressed against the upper surface of the prefabricated cross plate foundation.

6. The adjustable photovoltaic support foundation according to claim 1, characterized in that: The first external threaded rod extends into the prefabricated cross plate foundation and is filled with slurry between the rod and the prefabricated cross plate foundation. The bottom surface of the prefabricated cross plate foundation is provided with a first sinking groove, and the bottom end of the first external threaded rod is provided with a first baffle, which is in contact with the bottom groove surface of the first sinking groove.

7. A deviation correction construction method for an adjustable photovoltaic support foundation according to any one of claims 1 to 6, characterized in that: The following steps are involved: Insert a jacking device between the pile cap and the cover plate at the location where settlement occurs; Loosening the first thread locking component between the pile cap and the first externally threaded rod; The cover plate is lifted by the lifting equipment, and the cover plate lifts the settled prefabricated cross plate through the first external threaded rod. After lifting to the target height, fine sand is backfilled under the lifted prefabricated cross plate foundation and compacted, and then the first threaded locking component is re-tightened.

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