Tubular pile photovoltaic support structure

Abstract

The tubular pile photovoltaic support structure comprises a precast pile, the lower end of the precast pile is inserted into a foundation, the upper portion of the precast pile upwards extends out of the ground to form a supporting rod, and a supporting frame is installed at the top end of the supporting rod through a connecting structure; a containing cavity with an upward opening is formed in the top of the supporting rod. The connecting structure comprises an insertion core located in the containing cavity and an embedded screw inserted into the insertion core. The connecting bottom plate is mounted at the top of the supporting rod through the pre-embedded screw rod, and the supporting frame is fixedly mounted on the connecting bottom plate; the pile wall of the containing cavity is provided with a joint bar hole penetrating through the inside and the outside of the pile wall, and the reinforcing rib is inserted into the containing cavity through the joint bar hole and inserted into the inserting core. The insertion core is used as a connecting structure to replace a shroud ring and other similar connecting pieces in the prior art, so that the problem of shaking between the connecting pieces and the supporting rod can be avoided, the problem of distortion and deformation of the mounting platform caused by shaking of the supporting frame is avoided, and the safety of the photovoltaic panel in the operation process is ensured.

Description

Technical Field

[0001] This utility model relates to a photovoltaic support structure for pipe piles. Background Technology

[0002] In areas with favorable geological conditions, utility poles or piles are used as support rods. A support frame, secured with clamps, is then installed at the top of these poles. This support frame can directly support a single photovoltaic panel, or several support rods can be installed along a straight line, with connecting beams erected on top to form a photovoltaic panel installation platform. To prevent the clamps from loosening and sliding down after prolonged use, a horizontal brace is installed at the top of the support rod. While this design prevents slippage, it doesn't eliminate the possibility of swaying. This swaying can cause twisting and deformation of the support frame and the photovoltaic panel installation platform, potentially endangering the photovoltaic panels. Furthermore, because the clamps are steel structural components, they are susceptible to atmospheric corrosion during long-term use, resulting in poor durability. Utility Model Content

[0003] To address the problem in existing technologies where the support frame at the top of the support rod can become twisted and deformed due to loose clamps, this application proposes a pipe pile photovoltaic support structure, which includes a precast pile with its lower end inserted into the foundation, and the upper part of the precast pile extending upwards from the ground to form a support rod. The support frame is installed at the top of the support rod via a connecting structure.

[0004] The support rod has an upward-opening cavity at its top. The connecting structure includes a core-filled steel cage inserted into the cavity and concrete poured into the cavity. The concrete fills the cavity with the core-filled steel cage. One end of a pre-embedded screw is inserted into the concrete, and the other end extends upward from the top surface of the support rod. A connecting base plate is installed on the top of the support rod via the pre-embedded screw, and a support frame is fixedly installed on the connecting base plate. The core-filled steel cage and the concrete together form a core insert. Insertion holes penetrating the inside and outside of the pile wall are opened on the pile wall of the cavity. Reinforcing bars are inserted into the cavity through these holes and into the core insert. Specifically, the precast pile uses PHC pipe piles.

[0005] In this application, precast piles are directly used as support rods. The precast piles serve as both the foundation of the underground part and the support column of the above-ground part. Since the foundation construction and support column construction in the prior art can be completed in one go, the construction efficiency can be effectively improved. Since there is no need to wait for the foundation to solidify, the construction time can also be shortened.

[0006] In this application, a connection structure between the support frame and the support rod is formed by a core-filled steel cage and the concrete within the cavity, replacing existing clamps and similar connectors. This avoids problems such as swaying between the connector and the support rod, thus preventing the installation platform from twisting and deforming due to support frame swaying, ensuring the safety of the photovoltaic panels during operation. Since the connection structure in this application is actually a reinforced concrete structure, compared with the steel clamps in existing technologies, it also extends service life and reduces replacement frequency, thereby reducing the maintenance cost of the photovoltaic operating device. Although the construction cost of the connection structure in this application exceeds that of clamps, considering the subsequent maintenance costs and the potential damage caused by clamp swaying, the reinforced concrete connection structure of this application still has a cost advantage.

[0007] Since conventional precast piles are mainly prestressed concrete pipe piles, their inner walls are smooth, resulting in a relatively weak connection between the concrete and the precast pile. The connection strength relies primarily on the friction between the core and the inner wall of the cavity. Therefore, to ensure this connection strength, the core typically requires a relatively long length, leading to increased construction costs. This application utilizes reinforcing ribs as auxiliary connectors between the core and the precast pile to improve the connection strength, thereby reducing the core length and lowering construction costs. Furthermore, the reinforcing ribs also serve as supports for the core-filled steel reinforcement cage, eliminating the need for other fixing measures for the cage.

[0008] Furthermore, to improve the connection strength between the connecting structure and the precast pile, the two ends of the reinforcing bar are respectively inserted into two oppositely arranged bar insertion holes, and the reinforcing bar passes through the core-filled steel cage.

[0009] Furthermore, epoxy resin or grout is injected into the insertion holes of the reinforcing bars. Using epoxy resin or grout not only improves the connection strength between the reinforcing bars and the precast piles, but also serves as an anti-corrosion material for the reinforcing bars, preventing corrosion and ensuring their service life. The grout solidifies rapidly within 1-2 hours and achieves a strength of over 30 MPa, which helps to shorten the construction period.

[0010] Furthermore, to simplify the structure, the core-filled steel reinforcement cage includes vertical bars and stirrups wrapped around the vertical bars. The vertical bars are made of threaded steel, and at least some of the vertical bars are formed as pre-embedded bolts. Specifically, the threaded steel can be precision-rolled threaded steel or ordinary threaded steel.

[0011] Furthermore, to facilitate the installation of the support frame, the support frame includes a main support extending vertically, which is welded to the connecting base plate. This design allows the support frame and connecting base plate, which are connected as one unit, to be installed on top of the precast pile in one go using a hoisting method, or the connecting base plate can be fixed to the top of the precast pile first, and then the support frame, which is connected as one unit, can be hoisted to the top of the precast pile and welded to the connecting base plate.

[0012] Furthermore, to improve the connection strength between the main support and the connecting base plate, a reinforcing plate is welded to the side of the main support, and the lower end of the reinforcing plate is welded to the connecting base plate. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0014] Figure 2 yes Figure 1 Enlarged view of section A.

[0015] Figure 3 This is a structural diagram of the support frame.

[0016] Figure 4 This is a construction flowchart for a pipe pile photovoltaic support structure. Detailed Implementation

[0017] See Figure 1-Figure 3 A photovoltaic support structure for pipe piles includes a precast pile 10 with its lower end inserted into the foundation. The lower section of the precast pile 10 inserted into the foundation forms a support pile body 11, and the upper section extending 100 above the ground forms a support rod 12. In this embodiment, the precast pile is specifically a PHC pipe pile.

[0018] The support frame 20 is installed at the top of the support rod 12 via the connecting structure 40. The top of the support rod has an upward-opening cavity 14. Since the precast pile in this embodiment is a PHC pipe pile, the upper end of the central hole of the PHC pipe pile forms the cavity 14.

[0019] The connecting structure 40 includes a core-filled steel reinforcement cage inserted into the cavity 14 and concrete 49 poured into the cavity. The core-filled steel reinforcement cage and the concrete together form the core. Specifically, the core-filled steel reinforcement cage includes vertical bars 411 and stirrups 412 wrapped around the vertical bars 411. The vertical bars 411 are made of ordinary threaded steel, and each vertical bar extends upward beyond the concrete 49 and beyond the top surface of the support rod. In this embodiment, the vertical bars also serve as embedded bolts 42. It can be understood that in another embodiment, the vertical bars can also be made of high-strength threaded steel.

[0020] It is understood that, in another embodiment, a special pre-embedded screw can also be provided. When a special pre-embedded screw is provided, one end of the pre-embedded screw is inserted into the concrete, and the other end of the pre-embedded screw extends upward out of the top surface of the support rod.

[0021] The connecting base plate 44 is supported on the top surface of the support rod. The pre-embedded screw 42 passes upward through the connecting base plate 44 and is screwed with a precision-rolled nut 43, which fixes the connecting base plate 44 to the top surface of the support rod. The support frame is fixedly installed on the connecting base plate.

[0022] In this embodiment, several insertion holes 13 are provided on the pile wall of the cavity. The insertion holes penetrate the inside and outside of the pile wall, and the reinforcing bars 48 pass through two opposite insertion holes 13 and pass through the core-filling steel cage. The use of reinforcing bars not only improves the convenience of construction but also improves the connection strength between the connecting structure 40 and the support rod 12. When placing the core-filling steel cage, the supporting effect of the reinforcing bars keeps the core-filling steel cage within the cavity, eliminating the need for other fixing measures. It can be understood that in another embodiment, one end of the reinforcing bar can be inserted into the insertion hole 13, and the other end of the reinforcing bar can only extend into the cavity. Alternatively, both ends of some reinforcing bars can be inserted into one insertion hole 13, and both ends of some reinforcing bars can extend into the insertion hole and the cavity respectively.

[0023] Grouting material is injected into the insertion holes. There are no special requirements for the grouting material; any concrete-type grouting material can be used in this application. It is understood that in other embodiments, epoxy resin can also be used instead of grouting material. Figure 2 In the middle, for clarity, some of the insertion holes are filled with grout.

[0024] In this embodiment, the support frame 20 includes a main support 24 extending vertically, a first diagonal brace 21 and a second diagonal brace 22 connected to opposite sides of the main support, and both the first and second diagonal braces are bolted to the main support via a web plate 25. The lower end of the main support 24 is welded to a connecting base plate 44. To improve the stability of the support frame 20 on the connecting base plate, a reinforcing plate 45 is welded to the side of the main support, and the lower end of the reinforcing plate 45 is welded to the connecting base plate 44. A top support 23 is arranged in an inclined direction, and the main support 24, the first diagonal brace 21 and the second diagonal brace 22 are all connected to the top support 23.

[0025] Several pipe pile photovoltaic support structures are set at intervals along a straight line. Connecting beams 26 are erected on the top supports of each pipe pile photovoltaic support structure, connecting each support frame 20 into one unit. Photovoltaic panels 30 are erected on connecting beams 26.

[0026] To provide a more detailed explanation of this application, the construction method of the aforementioned pipe pile photovoltaic support structure is described below, with specific steps as follows:

[0027] (1) Please refer to Figure 4 In step (a), the lower section of the PHC pipe pile is first inserted into the foundation at the designated location.

[0028] (2) Please refer to Figure 4 In step (b), the core-filled steel cage is inserted into the top of the central hole of the PHC pipe pile. The top of the central hole is the cavity 14. Then, reinforcing bars 48 are inserted, grout is poured into the insertion holes, and concrete is poured into the cavity to fill the core-filled steel cage into the cavity.

[0029] (3) Please refer to Figure 4 In step (c), after the concrete reaches the set strength, the connecting base plate 44 is installed. In this embodiment, the support frame 20 is assembled on the ground, and the connecting base plate is pre-welded to the main support. The connecting base plate and the support frame are installed on top of the PHC pipe pile in one go.

[0030] It is understood that in other embodiments, the connecting base plate may be installed on top of the PHC pipe pile first, and then the support frame may be hoisted to the top of the PHC pipe pile and the main support may be welded to the connecting base plate, or the components of the support frame may be installed sequentially on the connecting base plate.

[0031] After the installation of the pipe pile photovoltaic support structure is completed, the connecting beam 26 is installed on the top support 23 of each pipe pile photovoltaic support structure. The connecting beams together form the photovoltaic panel installation platform, and finally the photovoltaic panel is installed on the connecting beam 26.

Claims

1. A photovoltaic support structure for pipe piles, characterized in that, It includes a precast pile with its lower end inserted into the foundation, and the upper part of the precast pile extends upwards out of the ground to form a support rod. The support frame is installed at the top of the support rod via a connecting structure. The support rod has an upward-opening cavity at its top. The connecting structure includes a core-filled steel cage inserted into the cavity and concrete poured into the cavity. The concrete fills the cavity with the core-filled steel cage. One end of the pre-embedded screw is inserted into the concrete, and the other end of the pre-embedded screw extends upward from the top surface of the support rod. A connecting base plate is installed on the top of the support rod via the pre-embedded screw, and a support frame is fixedly installed on the connecting base plate. The core-filled steel cage and the concrete together form a core insert. Insertion holes penetrating the inside and outside of the pile wall are opened on the pile wall of the cavity. The reinforcing bars are inserted into the cavity through the insertion holes and into the core insert.

2. The photovoltaic support structure for pipe piles according to claim 1, characterized in that, The two ends of the reinforcing bar are respectively inserted into two opposite insertion holes, and the reinforcing bar passes through the core-filled steel cage.

3. The photovoltaic support structure for pipe piles according to claim 1 or 2, characterized in that, Epoxy resin or grout is injected into the insertion holes.

4. The photovoltaic support structure for pipe piles according to claim 1, characterized in that, The core-filled steel cage includes vertical bars and stirrups wrapped around the vertical bars. The vertical bars are made of threaded steel, and at least part of the vertical bars are formed as pre-embedded bolts.

5. The photovoltaic support structure for pipe piles according to claim 1, characterized in that, The support frame includes a main support extending in a vertical direction, which is welded to the connecting base plate.

6. The photovoltaic support structure for pipe piles according to claim 5, characterized in that, A reinforcing plate is welded to the side of the main support, and the lower end of the reinforcing plate is welded to the connecting base plate.

7. The photovoltaic support structure for pipe piles according to claim 1, characterized in that, The precast piles are PHC pipe piles.

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