Photovoltaic pile foundation horizontal bearing capacity enhancement structure

Abstract

The application discloses a kind of photovoltaic pile foundation horizontal bearing capacity enhancement structure of photovoltaic power generation technical field, including standing pile;Inner clamping ring frame, inner clamping ring frame coaxial sleeve is set to the outside of standing pile, and inner clamping ring frame is fixedly connected with standing pile radially;Outer connecting ring frame, outer connecting ring frame coaxial sleeve is set in the outside of inner clamping ring frame;Radial link, multiple radial links are distributed around the circumferential direction of standing pile, and one end of radial link is fixedly connected with inner clamping ring frame, and the other end of radial link is fixedly connected with outer connecting ring frame;Anti-toppling ring wall, anti-toppling ring wall coaxial sleeve is set in the outside of outer connecting ring frame, and anti-toppling ring wall is fixedly connected with outer connecting ring frame radially;Backfill, backfill is filled between anti-toppling ring wall and standing pile.The application can improve the horizontal bearing capacity of pile foundation, while convenient construction.Can improve the safety, economy of photovoltaic pile foundation.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, and specifically to a structure for enhancing the horizontal bearing capacity of photovoltaic pile foundations. Background Technology

[0002] Under the guidance of new development concepts, photovoltaic power generation has developed rapidly, and photovoltaic piles are often numerous, with their safety and economy significantly impacting the entire project. For pile foundations, their cross-sectional dimensions are positively correlated with horizontal bearing capacity (the bearing capacity of a pile when subjected to force perpendicular to its axis). Existing photovoltaic power station pile foundations, limited by horizontal bearing capacity, often require large cross-sectional dimensions and deep embedment, resulting in poor economic efficiency.

[0003] Therefore, how to improve the horizontal bearing capacity of pile foundations without increasing the cross-sectional size and burial depth has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a photovoltaic pile foundation horizontal bearing capacity enhancement structure to address the above-mentioned technical problems, thereby improving the horizontal bearing capacity, safety and economy of the pile foundation.

[0005] The technical solution adopted in this invention is: a photovoltaic pile foundation horizontal bearing capacity enhancement structure, comprising:

[0006] Erecting piles;

[0007] An inner clamping ring is coaxially sleeved on the outside of the upright pile, and the inner clamping ring is radially fixedly connected to the upright pile.

[0008] An outer connecting ring frame, which is coaxially sleeved on the outside of the inner clamping ring frame;

[0009] Radial connecting rods, a plurality of radial connecting rods are distributed around the circumference of the upright pile, and one end of the radial connecting rod is fixedly connected to the inner clamping ring frame, and the other end of the radial connecting rod is fixedly connected to the outer connecting ring frame;

[0010] An anti-tipping ring wall is coaxially sleeved on the outside of the outer connecting ring frame, and the anti-tipping ring wall is radially fixedly connected to the outer connecting ring frame;

[0011] Backfill soil is used to fill the space between the anti-tipping ring wall and the piles.

[0012] Preferably, the inner clamping ring frame includes a fixed ring, an arc-shaped clamping plate, and an adjusting screw. The two arc-shaped clamping plates are symmetrically arranged inside the fixed ring. The adjusting screw is arranged radially along the fixed ring and is threaded into the threaded through hole of the fixed ring. One end of the adjusting screw extends axially and is rotatably connected to the arc-shaped clamping plate.

[0013] Preferably, the inner clamping ring frame includes a semi-circular frame, a rubber buffer pad, and fastening bolts. The two ends of the semi-circular frame are formed with splicing steps. The two semi-circular frames are spliced ​​symmetrically to form a ring, and the splicing steps of the two semi-circular frames are fixedly connected by fastening bolts. The rubber buffer pad is set on the inner arc surface of the semi-circular frame.

[0014] Preferably, the two inner clamping ring frames are arranged in parallel vertically, the two outer connecting ring frames are arranged in parallel vertically, and an axially adjustable support rod is connected between the two inner clamping ring frames and between the two outer connecting ring frames.

[0015] Preferably, the support rod includes an upper half rod, an adjusting sleeve, and a lower half rod. The bottom end of the upper half rod is provided with a reverse thread, the top end of the lower half rod is provided with a positive thread, and the two ends of the adjusting sleeve are respectively threaded to the upper half rod and the lower half rod.

[0016] Preferably, the cross-section of the anti-tipping ring wall is circular.

[0017] The beneficial effects of this invention are:

[0018] This invention increases the surface contact area by fixing an inner clamping ring, an outer connecting ring, and an anti-tipping ring wall to the outside of the pile. This increases the contact area between the pile and the foundation. Horizontal loads are transmitted through radial connecting rods fixed between the inner clamping ring and the outer connecting ring, increasing the interaction force between the foundation and the pile. This not only improves the horizontal bearing capacity of the pile but also provides better safety and economy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure for enhancing the horizontal bearing capacity of the photovoltaic pile foundation according to the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the photovoltaic pile foundation horizontal bearing capacity enhancement structure of the present invention;

[0021] Figure 3 This is a schematic diagram showing the connection between the inner clamping ring frame and the outer connecting ring frame;

[0022] Figure 4 This is one of the structural schematic diagrams of the inner clamping ring frame;

[0023] Figure 5 This is the second schematic diagram of the internal clamping ring frame;

[0024] Figure 6 This is a schematic diagram of the support rod.

[0025] Explanation of the reference numerals in the figure:

[0026] 10. Erecting piles;

[0027] 20. Inner clamping ring frame; 21. Fixing ring; 22. Arc-shaped clamping plate; 23. Adjusting screw; 24. Semi-circular frame; 25. Rubber buffer pad; 26. Fastening bolt;

[0028] 30. External connecting ring frame;

[0029] 40. Radial connecting rod;

[0030] 50. Anti-tipping ring wall;

[0031] 60. Backfill soil;

[0032] 70. Support rod; 71. Upper half rod; 72. Adjusting sleeve; 73. Lower half rod. Detailed Implementation

[0033] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0034] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0037] Examples, such as Figures 1-6 As shown, a photovoltaic pile foundation horizontal bearing capacity enhancement structure includes:

[0038] A pile 10 is erected vertically, with its bottom end embedded in the foundation.

[0039] The inner clamping ring 20 is coaxially sleeved on the outside of the pile 10, and the inner clamping ring 20 is radially fixedly connected to the pile 10.

[0040] An outer connecting ring 30 is coaxially sleeved on the outside of the inner clamping ring 20.

[0041] Radial connecting rods 40, there are multiple radial connecting rods 40 distributed around the circumference of the pile 10, one end of the radial connecting rod 40 is fixedly connected to the inner clamping ring 20, and the other end of the radial connecting rod 40 is fixedly connected to the outer connecting ring 30, for transmitting horizontal loads between the inner clamping ring 20 and the outer connecting ring 30.

[0042] Anti-tipping ring wall 50 is coaxially sleeved on the outside of outer connecting ring frame 30, and the anti-tipping ring wall 50 is radially fixedly connected to outer connecting ring frame 30, used to transfer horizontal load between pile 10 and foundation.

[0043] Backfill soil 60 is used to fill the space between the anti-tipping ring wall 50 and the pile 10.

[0044] This application adopts a method of increasing the surface contact area. An inner clamping ring 20, an outer connecting ring 30, and an anti-tipping ring wall 50 are fixedly connected to the outside of the pile 10, which increases the contact area between the pile 10 and the foundation. The horizontal load is transmitted through the radial connecting rod 40 fixedly connected between the inner clamping ring 20 and the outer connecting ring 30, which increases the interaction force between the foundation and the pile 10. This not only improves the horizontal bearing capacity of the pile 10, but also has better safety and economy.

[0045] In one specific embodiment, such as Figure 4As shown, the inner clamping ring frame 20 is an integral structure, and includes a fixing ring 21, an arc-shaped clamping plate 22, and adjusting screws 23. The inner diameter of the arc-shaped clamping plate 22 corresponds to the outer diameter of the pile 10, so that the two arc-shaped clamping plates 22 can radially clamp and fix the pile 10. The inner diameter of the fixing ring 21 is larger than the outer diameter of the pile 10, and the two arc-shaped clamping plates 22 are symmetrically arranged inside the fixing ring 21. There are two adjusting screws 23. 23 and the arc-shaped clamping plate 22 are in a one-to-one correspondence. Two threaded through holes (not shown in the figure) are provided on the arc-shaped clamping plate 22 in the radial direction. The adjusting screw 23 is horizontally arranged in the radial direction of the fixing ring 21, and the adjusting screw 23 is threadedly connected in the threaded through hole of the fixing ring 21. One end of the adjusting screw 23 extends axially and is rotatably connected to the arc-shaped clamping plate 22, so that by adjusting the rotation of the adjusting screw 23 in the threaded through hole of the fixing ring 21, the two arc-shaped clamping plates 22 can clamp or release the upright pile 10.

[0046] In one specific embodiment, such as Figure 5 As shown, the inner clamping ring 20 is a split structure, and the inner clamping ring 20 includes a semi-circular frame 24, a rubber buffer pad 25, and fastening bolts 26. The semi-circular frame 24 is arc-shaped, and splicing steps are formed at both ends of the semi-circular frame 24 so that the two semi-circular frames 24 can be spliced ​​symmetrically to form a complete ring. The splicing steps of the two semi-circular frames 24 are fixedly connected by fastening bolts 26, which are set parallel to the post 10. The inner diameter of the semi-circular frame 24 is larger than the outer diameter of the post 10, and a rubber buffer pad 25 is fixed on the inner arc surface of the semi-circular frame 24. The inner diameter of the rubber buffer pad 25 is smaller than the radial dimension of the post 10 so that after the two semi-circular frames 24 are fixedly connected to form a ring by fastening bolts 26, the two semi-circular frames 24 can clamp and fix the post 10.

[0047] In one specific embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, there are two inner clamping ring frames 20, which are arranged parallel to each other, one above the other. An axially adjustable support rod 70 is connected between the two inner clamping ring frames 20, and multiple support rods 70 are evenly distributed around the circumference of the upright pile 10. There are also two outer connecting ring frames 30, which are arranged parallel to each other, one above the other. An axially adjustable support rod 70 is connected between the two outer connecting ring frames 30, and multiple support rods 70 are evenly distributed around the circumference of the upright pile 10, so that the axial spacing between the two outer connecting ring frames 30 can match the axial dimension of the anti-tipping ring wall 50.

[0048] Preferred, such as Figure 6As shown, the support rod 70 includes an upper half rod 71, an adjusting sleeve 72, and a lower half rod 73. The upper half rod 71 has a plug-in step at its top end, and the lower half rod 73 has a plug-in step at its bottom end. The plug-in step is plugged into the positioning hole of the inner clamping ring 20 or the outer connecting ring 30. The bottom end of the upper half rod 71 has a reverse thread, and the top end of the lower half rod 73 has a positive thread. The two ends of the adjusting sleeve 72 are threadedly connected to the upper half rod 71 and the lower half rod 73, respectively, so that the axial dimension of the support rod 70 can be adjusted by the threaded connection of the adjusting sleeve 72 to the upper half rod 71 and the lower half rod 73.

[0049] In one specific embodiment, the anti-tipping ring wall 50 has a circular cross-section to maximize the contact area between the pile 10 and the foundation in any horizontal direction.

[0050] Preferably, the anti-tipping ring wall 50 can be an integral structure or a split structure.

[0051] The construction process of the reinforcement structure in this application is as follows:

[0052] Excavate a foundation pit on the foundation to accommodate the anti-tipping ring wall 50. First, pre-embed and fix the bottom end of the pile 10 in the soil below the foundation pit. Then, clamp and fix the inner clamping ring frame 20 to the outer wall of the bottom end of the pile 10. Then, radially fix the inner clamping ring frame 20 and the outer connecting ring frame 30 through the radial connecting rod 40. Fix the outer connecting ring frame 30 to the anti-tipping ring wall 50 (welded or bolted). Finally, backfill soil 60 is backfilled between the pile 10 and the anti-tipping ring wall 50.

[0053] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A structure for enhancing the horizontal bearing capacity of photovoltaic pile foundations, characterized in that, include: Erecting piles (10); An inner clamping ring (20) is coaxially sleeved on the outside of the upright pile (10), and the inner clamping ring (20) is radially fixedly connected to the upright pile (10). An outer connecting ring (30) is coaxially sleeved on the outside of the inner clamping ring (20); Radial connecting rod (40), a plurality of radial connecting rods (40) are distributed around the circumference of the upright pile (10), and one end of the radial connecting rod (40) is fixedly connected to the inner clamping ring frame (20), and the other end of the radial connecting rod (40) is fixedly connected to the outer connecting ring frame (30); Anti-tipping ring wall (50), the anti-tipping ring wall (50) is coaxially sleeved on the outside of the outer connecting ring frame (30), and the anti-tipping ring wall (50) is radially fixedly connected to the outer connecting ring frame (30); Backfill soil (60) is filled between the anti-tipping ring wall (50) and the pile (10); The inner clamping ring frame (20) includes a semi-circular frame (24), a rubber buffer pad (25), and fastening bolts (26). The two ends of the semi-circular frame (24) are formed with splicing steps. The two semi-circular frames (24) are spliced ​​symmetrically to form a ring, and the splicing steps of the two semi-circular frames (24) are fixedly connected by fastening bolts (26). The rubber buffer pad (25) is set on the inner arc surface of the semi-circular frame (24). Two inner clamping ring frames (20) are arranged in parallel vertically, and two outer connecting ring frames (30) are arranged in parallel vertically. An axially adjustable support rod (70) is connected between the two inner clamping ring frames (20) and between the two outer connecting ring frames (30). The support rod (70) includes an upper half rod (71), an adjusting sleeve (72), and a lower half rod (73). The bottom end of the upper half rod (71) is provided with a reverse thread, and the top end of the lower half rod (73) is provided with a positive thread. The two ends of the adjusting sleeve (72) are threadedly connected to the upper half rod (71) and the lower half rod (73) respectively.

2. The photovoltaic pile foundation horizontal bearing capacity enhancement structure according to claim 1, characterized in that, The cross-section of the anti-tipping ring wall (50) is circular.

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