Anti-typhoon foundation structure for photovoltaic support

Abstract

An anti-typhoon foundation structure for a photovoltaic support comprises the photovoltaic support and a foundation, the photovoltaic support is fixed on the foundation, the foundation is buried in a soil body, the foundation comprises a base and anti-overturning parts, a windward side and a leeward side are arranged on the base, and the anti-overturning parts are arranged on the windward side and the leeward side of the base respectively. A foundation structure is adopted to replace a traditional pipe pile structure, and the problems of pipe pile inclination and pile reversing are fundamentally avoided. According to the foundation, the anti-overturning parts are arranged on the windward side and the leeward side of the base, the base provides main vertical bearing capacity, the anti-overturning parts enhance the horizontal wind resistance capacity, and the base and the anti-overturning parts are combined to form a stable stress system, so that the anti-overturning capacity of the foundation is greatly improved, and strong wind loads caused by typhoons are effectively resisted; and the foundation can still keep stable under extreme conditions of typhoon, rainstorm and the like.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to a typhoon-resistant foundation structure for a photovoltaic support. Background Art

[0002] In recent years, photovoltaic power generation has been widely used as a clean energy source. The stability of photovoltaic supports directly affects the safety and reliability of power generation systems. Currently, the main method of fixing photovoltaic supports is to use pipe pile foundations, which involves driving steel or concrete pipe piles into the soil for fixation.

[0003] However, in areas prone to typhoons, this type of pipe pile structure can be insufficiently wind-resistant. Typhoons are often accompanied by strong southeasterly winds, which generate significant wind loads. Traditional pipe piles rely primarily on vertical bearing capacity and have weak anti-overturning capabilities, making them prone to tilting and falling. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a typhoon-resistant foundation structure for photovoltaic supports. The structure uses foundations instead of pipe piles, fundamentally avoiding the problems of pipe pile tilting and falling, and can greatly improve the horizontal anti-overturning ability of the foundation, effectively resisting the strong wind loads brought by typhoons.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a typhoon-resistant foundation structure for a photovoltaic bracket is provided, including a photovoltaic bracket and a foundation, the photovoltaic bracket is fixed on the foundation, the foundation is buried in the soil, the foundation includes a base and an anti-overturning part, the base is provided with a windward surface and a leeward surface, and the anti-overturning part is respectively provided on the windward surface and the leeward surface of the base.

[0006] As a further improvement of the present invention, the base is a diamond-shaped structure, and one set of diagonal portions of the base is configured as a windward side and a leeward side.

[0007] As a further improvement of the present invention, the anti-overturning portion is a rectangular structure integrally formed with the base.

[0008] As a further improvement of the present invention, the tops of the base and the anti-overturning portion are exposed outside the soil, and the tops of the base and the anti-overturning portion are provided with a windward slope and a leeward slope.

[0009] As a further improvement of the present invention, a lifting lug is provided on the top of the base or the anti-overturning portion.

[0010] As a further improvement of the present invention, the interior of the base is a hollow structure, which is filled with soil and rocks or grouting.

[0011] As a further improvement of the present invention, the bottom of the base is provided with anti-slip ribs or barb structures.

[0012] As a further improvement of the present invention, the base and the anti-overturning portion respectively adopt a structure that is narrow at the top and wide at the bottom, with the sides forming inclined surfaces, so that the soil can be pressed on the inclined surfaces of the base 21 and the anti-overturning portion 22.

[0013] As a further improvement of the present invention, a bracket base is provided at the bottom of the photovoltaic bracket, and also includes connecting bolts, and the bracket base is fixed to the base through the connecting bolts.

[0014] As a further improvement of the present invention, it also includes a measuring bolt, a gasket-type pressure sensor and a monitoring and display device. The measuring bolt passes through the gasket-type pressure sensor and the bracket base in sequence and is fixed on the base. The gasket-type pressure sensor is electrically connected to the monitoring and display device.

[0015] The beneficial effects of the present invention are as follows: It uses a foundation structure to replace the traditional pipe pile structure, fundamentally avoiding the problems of pipe pile tilting and overturning. In the present invention, anti-overturning parts are provided on the windward and leeward sides of the base. The base provides the main vertical bearing capacity, while the anti-overturning parts enhance the horizontal wind resistance. The combination of the two forms a stable force-bearing system, thereby significantly improving the foundation's anti-overturning capacity, effectively resisting the strong wind loads brought by typhoons, and ensuring that the foundation remains stable under extreme conditions such as typhoons and heavy rains. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of embodiment 1;

[0017] Figure 2 This is a structural diagram of embodiment 2;

[0018] Figure 3 This is a structural diagram of embodiment 3;

[0019] Figure 4 This is a structural diagram of embodiment 4;

[0020] Marking description: photovoltaic bracket 1, bracket base 11, connecting bolt 12, foundation 2, base 21, anti-overturning part 22, windward side 23, leeward side 24, lifting ear plate 25, hook structure 26, windward slope 27, leeward slope 28, slope 29, measuring bolt 3, gasket pressure sensor 31. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0022] Example 1:

[0023] The Liyutan PV project in Xuwen County, Guangdong Province, is located in a coastal area. Traditional PV racking piles are insufficiently resistant to typhoons, particularly during the Category 12 winds of Typhoon Makar on September 7, 2024, which caused the pile structures to collapse and become damaged. Typhoon season, from June to November each year, is characterized by southeasterly and northwesterly winds and heavy rain, making piles susceptible to collapse and tilting. To address this issue, the project implemented the following solution to modify the mounting structure of the PV rack 1, ensuring its stability.

[0024] like Figure 1 As shown, a typhoon-resistant foundation structure for a photovoltaic support includes a photovoltaic support 1 and a foundation 2.

[0025] The foundation 2 is cast on the ground using a combination of galvanized steel bundled with diamond-shaped steel cages, molds, and marine concrete. The aforementioned materials are corrosion-resistant and moisture-proof, allowing them to adapt to the high humidity and high salt spray environment of coastal areas, thereby increasing their service life. After the foundation 2 is prefabricated on the ground, it is hoisted into a previously dug pit and backfilled with soil so that the foundation 2 is buried in the soil, completing the construction of the foundation 2. A support base 11 is provided at the bottom of the photovoltaic bracket 1. The support base 11 is fixed to the base 21 of the foundation 2 by connecting bolts 12, thereby fixing the photovoltaic bracket 1 to the foundation 2.

[0026] The foundation 2 includes a base 21 and an anti-overturning portion 22. The base 21 is a diamond-shaped structure, in which one diagonal line is parallel to the wind direction, that is, one set of diagonals is the windward side 23 and the leeward side 24. Strong winds during typhoon weather are mostly southeast or northwest. In this embodiment, the windward side 23 is southeast and the leeward side 24 is northwest. The anti-overturning portion 22 is a rectangular structure integrally formed with the base 21, and is respectively arranged on the windward side 23 and the leeward side 24 of the base 21, and the length direction of the anti-overturning portion 22 is perpendicular to the wind direction. The anti-overturning portion 22 can enhance the horizontal wind resistance. The bidirectional anti-overturning portion 22 can adapt to the alternating changes in wind direction (alternating southeast wind or northwest wind). The anti-overturning portion 22 is arranged on both the windward side 23 and the leeward side 24, which can ensure that when the wind direction changes alternately, the foundation 2 can provide stable anti-overturning support. When the photovoltaic bracket 1 is subjected to strong winds from the southeast or northwest, the wind load can be effectively transferred to the anti-overturning parts 22 on the windward side 23 and the leeward side 24 through the base 21, and the horizontal force is dispersed by the interaction between the anti-overturning parts 22 and the soil, thereby significantly improving the overall wind resistance stability of the structure.

[0027] A lifting lug 25 is provided on the top of the base 21 or the anti-overturning portion 22. The lifting lug 25 is installed during the pouring of the foundation 2 and is pre-buried in the foundation 2. The lifting lug 25 facilitates the transportation and installation of the foundation 2 and reduces the difficulty of construction. In this embodiment, the lifting lug 25 is provided on the top of the anti-overturning portion 22.

[0028] The interior of the base 21 is a hollow structure, which is filled with soil and rocks or grouting. The hollow structure can reduce the amount of concrete used when pouring the foundation 2 and reduce costs.

[0029] The bottom of the base 21 is provided with anti-slip ribs or barb structures 26. The anti-slip ribs or barb structures 26 are used to embed the base 21 into the soil layer, increase the friction between the base 21 and the soil, resist the horizontal shear force caused by typhoons, and prevent the base 21 from moving. In this embodiment, the bottom of the base 21 is provided with an inverted T-shaped barb structure 26.

[0030] This embodiment also provides a stress monitoring mechanism, including a measuring bolt 3, a gasket-type pressure sensor 31, and a monitoring and display device. The measuring bolt 3 passes through the gasket-type pressure sensor 31 and the bracket base 11 in sequence and is fixed on the base 21. The gasket-type pressure sensor 31 is electrically connected to the monitoring and display device. The gasket-type pressure sensor 31 monitors the stress deformation, fracture, loosening, and failure of the measuring bolt 3 in real time, and warns of the extreme load risk caused by the typhoon so that emergency measures can be taken in a timely manner.

[0031] Example 2:

[0032] like Figure 2 As shown, the difference between Example 2 and Example 1 lies in that the tops of both the base 21 and the anti-overturning portion 22 are exposed outside the soil, and both are provided with a windward slope 27 and a leeward slope 28. When strong winds blow against the windward slope 27 or the leeward slope 28, part of the horizontal load generated by the strong wind is converted into downward pressure, increasing the friction between the bottom of the base 21 and the soil, thereby further enhancing the anti-overturning force. Furthermore, the windward slope 27 and the leeward slope 28 also enable rapid drainage, preventing accumulated water from eroding the top of the foundation 2.

[0033] Example 3:

[0034] like Figure 3 As shown, the difference between Example 3 and Example 1 is that the base 21 and the anti-overturning part 22 respectively use a structure that is narrow at the top and wide at the bottom, and a slope 29 is formed on the side. The soil can be pressed on the slope 29 of the base 21 and the anti-overturning part 22, thereby utilizing the deadweight of the soil to enhance the pull-out resistance of the foundation 2.

[0035] Except for the above, the rest of the third embodiment is the same as the first embodiment, so it will not be repeated here.

[0036] Example 4:

[0037] like Figure 4As shown, the difference between Example 4 and Example 2 is that the lower parts of the base 21 and the anti-overturning part 22 except the top respectively use a structure that is narrow at the top and wide at the bottom, and the side surfaces of the lower parts form an inclined surface 29. The soil can be pressed on the inclined surface 29 of the base 21 and the anti-overturning part 22, thereby utilizing the deadweight of the soil to enhance the pull-out resistance of the foundation 2.

[0038] Except for the above, the rest of the fourth embodiment is the same as the second embodiment, so it will not be repeated here.

[0039] The above embodiments are only used to illustrate the present invention. Any person with ordinary knowledge in the technical field can make equivalent embodiments by making partial changes or modifications to the technical contents disclosed by the present invention without departing from the scope of the technical features of the present invention, and the equivalent embodiments still fall within the scope of the technical features of the present invention without departing from the technical features of the present invention.

Claims

1. A typhoon-resistant foundation structure for a photovoltaic support, characterized by: It includes a photovoltaic bracket and a foundation, the photovoltaic bracket is fixed on the foundation, the foundation is buried in the soil, the foundation includes a base and an anti-overturning part, the base is provided with a windward surface and a leeward surface, and the anti-overturning part is respectively provided on the windward surface and the leeward surface of the base.

2. The typhoon-resistant foundation structure for a photovoltaic support according to claim 1, characterized in that: The base is a diamond-shaped structure, and one set of diagonal portions of the base is configured as a windward side and a leeward side.

3. A typhoon-resistant foundation structure for a photovoltaic support according to claim 1 or 2, characterized in that: The anti-overturning portion is a rectangular structure integrally formed with the base.

4. The typhoon-resistant foundation structure for a photovoltaic support according to claim 1, characterized in that: The tops of the base and the anti-overturning part are exposed outside the soil, and the tops of the base and the anti-overturning part are provided with a windward slope and a leeward slope.

5. The typhoon-resistant foundation structure for a photovoltaic support according to claim 1, characterized in that: A lug plate for lifting is provided on the top of the base or the anti-overturning portion.

6. The typhoon-resistant foundation structure for a photovoltaic support according to claim 1, characterized in that: The interior of the base is a hollow structure, which is filled with soil and rocks or grouting.

7. The typhoon-resistant foundation structure for a photovoltaic support according to claim 1, characterized in that: The bottom of the base is provided with anti-slip ribs or barb structures.

8. The typhoon-resistant foundation structure for a photovoltaic support according to claim 1, characterized in that: The base and the anti-overturning portion respectively adopt a structure that is narrow at the top and wide at the bottom, and the side surfaces form inclined surfaces, so that the soil can be pressed on the inclined surfaces of the base 21 and the anti-overturning portion 22.

9. The typhoon-resistant foundation structure for a photovoltaic support according to claim 1, characterized in that: The bottom of the photovoltaic bracket is provided with a bracket base and also includes connecting bolts, and the bracket base is fixed on the base through the connecting bolts.

10. The typhoon-resistant foundation structure for a photovoltaic support according to claim 9, characterized in that: It also includes a measuring bolt, a gasket-type pressure sensor and a monitoring and display device. The measuring bolt passes through the gasket-type pressure sensor and the bracket base in sequence and is fixed on the base. The gasket-type pressure sensor is electrically connected to the monitoring and display device.

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