Photovoltaic ground pile for rock-soil composite hard stratum
By combining the main load-bearing pile pipe and the anchoring reinforcement, the problem of high construction difficulty of photovoltaic ground piles in hard rock and soil composite strata is solved, and the stability and pull-out resistance of photovoltaic ground piles in complex terrain are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUXIONG JINJIANG NEW ENERGY RESEARCH CO LTD
- Filing Date
- 2025-02-14
- Publication Date
- 2026-06-05
AI Technical Summary
In hard rock and soil composite strata, the construction of photovoltaic ground piles is difficult, especially when large-scale equipment is lacking, the drilling depth requirement is high, and the construction process is fraught with difficulties.
The structure adopts a combination of main load-bearing pile pipe and multiple anchor bars. The anchor bars extend along the axial direction of the main load-bearing pile pipe and are staggered. They are inserted into the soil and rock through a small-diameter foundation pit and welded to the main load-bearing pile pipe to form a spatial network structure, which enhances the anti-overturning and anti-shear performance.
It reduces construction difficulty, improves the stability and pull-out resistance of photovoltaic ground piles, reduces reliance on large drilling equipment, and is suitable for construction in complex terrain areas.
Smart Images
Figure CN224325765U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of ground pile technology, and in particular to a photovoltaic ground pile for hard rock-soil composite strata. Background Technology
[0002] With the global demand for clean energy continuing to grow, photovoltaic (PV) power generation is playing an increasingly important role in the energy sector due to its significant advantages of being green, environmentally friendly, and sustainable. Related projects are expanding in scale and their applications are becoming more widespread. Highway slopes, with their high space utilization rate and abundant sunlight, have become highly promising development sites for distributed PV power plants. Constructing PV power plants on highway slopes not only achieves efficient use of space resources but also promotes the integration of the energy and transportation industries, possessing significant economic and environmental value.
[0003] However, constructing photovoltaic (PV) ground piles in complex terrain areas such as highway slope protection presents a series of severe challenges. In these areas, characterized by steep slopes, large angles, and hard rock-soil composite strata, the soil structure is rigid, the terrain is rugged, and there is a lack of stable locations for large drilling equipment to be parked and operated. Conventional large drilling equipment struggles to find suitable support points or even reach the construction site, necessitating the use of small to medium-sized handheld drilling equipment. Furthermore, to ensure the stability of the PV system, the drilling depth for PV ground piles is subject to certain requirements.
[0004] The photovoltaic ground pile installation method in related technologies requires drilling a foundation pit with a consistent diameter and a certain depth in the ground. However, without the assistance of large-scale machinery, the construction process is fraught with difficulties, and the deeper the drilling depth, the greater the difficulty. Utility Model Content
[0005] This application provides a photovoltaic ground pile for hard rock-soil composite strata, which can solve the problem of high construction difficulty of photovoltaic ground piles in related technologies.
[0006] This application provides a photovoltaic ground pile for hard rock-soil composite strata, including:
[0007] The main bearing pile pipe has a first end and a second end disposed opposite to each other along its axial direction, the first end having a through hole extending in a first direction; and
[0008] Multiple anchor bars are connected to the second end and are evenly distributed along the circumference of the main bearing pile pipe;
[0009] In this configuration, multiple anchor bars extend along the axial direction of the main load-bearing pile pipe, and the main load-bearing pile pipe and multiple anchor bars are staggered along the axial direction of the main load-bearing pile pipe.
[0010] In some embodiments, the outer surface of the anchor bar is threaded.
[0011] In some embodiments, the anchoring reinforcement is welded to the main load-bearing pile pipe.
[0012] In some embodiments, the anchor bar and the main load-bearing pile pipe have a weld, and the weld is provided with an anti-corrosion layer.
[0013] In some embodiments, the welding length between the anchor bar and the main load-bearing pile pipe is d1, where d1 satisfies 200mm≤d1≤400mm.
[0014] In some embodiments, the length of the main bearing pile pipe is h1, where h1 satisfies 1200mm≤h1≤1800mm;
[0015] And / or, the length of the anchoring bar. Let h2 be the length of the anchoring bar, where h2 satisfies 1000mm ≤ h2 ≤ 1500mm.
[0016] In some embodiments, the distance between the through hole and the first end is d2, where d2 satisfies 10mm≤d2≤15mm.
[0017] In some embodiments, a cavity is formed inside the main bearing pile pipe, and the cavity has openings at both ends.
[0018] The photovoltaic ground pile for hard rock-soil composite strata based on the embodiments of this application includes a main bearing pile pipe and multiple anchor bars. The main bearing pile pipe can be connected to the photovoltaic support through the through hole. Along the axial direction of the main bearing pile pipe, the main bearing pile pipe and the multiple anchor bars are staggered. By inserting the main bearing pile pipe and the anchor bars into the hard rock-soil composite strata and pouring concrete, the stability of the entire photovoltaic ground pile can be guaranteed. Since the diameter of the anchor bars is smaller than that of the main bearing pile pipe, only a small-diameter foundation pit is required, without the need to dig a large-diameter foundation pit at a deeper depth, thus reducing the construction difficulty. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of a photovoltaic ground pile for a hard rock-soil composite stratum provided in an embodiment of this application;
[0021] Figure 2 for Figure 1The diagram shows a structural schematic of a photovoltaic ground pile used in hard rock-soil composite strata from another perspective.
[0022] Figure reference numerals:
[0023] 100. Main load-bearing pile pipe; 101. First end; 102. Second end; 100a. Through hole;
[0024] 200. Anchor bars. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0026] The existing photovoltaic ground pile installation method requires drilling a foundation pit with a consistent diameter and a certain depth in the ground. However, without the assistance of large-scale machinery, the construction process is fraught with difficulties. The deeper the drilling depth, the greater the technical challenges.
[0027] To address the aforementioned technical problems, this application proposes a photovoltaic ground pile for hard composite soil and rock strata, comprising a main bearing pile pipe 100 and multiple anchor bars 200, which will be described below in conjunction with the attached... Figure 1 Further explanation is given regarding the main load-bearing pile pipe 100 and the anchoring bar 200.
[0028] The main load-bearing pile pipe 100 can be made of some high-strength metal, such as hot-dip galvanized low-alloy high-strength structural steel or other steel structures in the prior art. The main load-bearing pile pipe 100 has a first end 101 and a second end 102 arranged opposite to each other along its axial direction. The axial direction can be defined as the direction extending along the Z-axis. The first end 101 is provided with a through hole 100a extending along a first direction, which is perpendicular to the Z-axis. That is, in some embodiments, the first direction is the direction extending along the Y-axis, or it can be the direction extending along the X-axis. The specific setting depends on the actual situation and is not limited here. The through hole 100a is used to connect the photovoltaic bracket. The through hole 100a can be designed with a standardized interface to adapt to different types of photovoltaic brackets.
[0029] Multiple anchor bars 200 are connected to the second end 102 and are evenly distributed along the circumference of the main bearing pile pipe 100. The number of anchor bars 200 can be 2, 3, 4, 6, etc., and is not limited here. In this embodiment, the number of anchor bars 200 is 3 for illustrative purposes.
[0030] Among them, multiple anchor bars 200 extend along the axial direction of the main bearing pile pipe 100, and the main bearing pile pipe 100 and multiple anchor bars 200 are staggered along the axial direction of the main bearing pile pipe 100.
[0031] Generally, the diameter of the main bearing pile 100 is between 150mm and 250mm, while the diameter of the anchor bar 200 is between 12mm and 32mm. Therefore, the diameter of the anchor bar 200 is much smaller than that of the main bearing pile 100. When excavating the foundation pit in the hard soil-rock composite stratum, it is only necessary to first excavate the foundation pit of the main bearing pile 100 shallowly, and then excavate the foundation pit of the anchor bar 200 deeply. Since the hole diameter of the foundation pit of the anchor bar 200 is much smaller than that of the foundation pit of the main bearing pile 100, no large drilling equipment is required. This is especially suitable for slope protection areas with complex terrain and limited space, thus greatly reducing the excavation difficulty.
[0032] Meanwhile, the anchor bars 200 are evenly distributed around the main load-bearing pile pipe 100 to form multi-point anchorage, effectively dispersing the load and enhancing the overall overturning resistance. The staggered arrangement makes the anchor bars 200 and the main load-bearing pile pipe 100 form a spatial network structure, further improving the pull-out and shear resistance.
[0033] In one embodiment of this application, the outer surface of the anchor bar 200 is provided with threads. The thread structure increases the contact area and friction between the anchor bar 200 and the surrounding rock and soil, significantly improving the pull-out resistance. In hard strata, the threads can better engage the rock mass, preventing the anchor bar 200 from loosening or slipping.
[0034] The threaded design gives the anchor bar 200 a self-tapping function, allowing it to be directly screwed into a pre-drilled small-diameter foundation pit, reducing additional fixing steps. The threaded structure ensures that the anchor bar 200 is tightly bonded to the stratum, reducing reliance on grouting materials and lowering construction complexity and cost.
[0035] In one embodiment, the anchor bar 200 is welded to the main bearing pile pipe 100, which not only reduces the complexity of the connection between the two, but also improves the connection strength between the anchor bar 200 and the main bearing pile pipe 100, thereby further improving the overturning resistance of the photovoltaic ground pile.
[0036] Through welding, the anchor bar 200 and the main load-bearing pile pipe 100 form an integrated structure. This structural continuity helps to disperse and resist forces from all directions, thereby improving the overall load-bearing capacity of the photovoltaic ground pile.
[0037] Furthermore, the anchor bar 200 and the main load-bearing pile pipe 100 have a weld (not shown in the figure), and an anti-corrosion layer is provided inside the weld. The anti-corrosion layer can effectively prevent the weld from being damaged by corrosion. Especially in harsh environments such as humidity and salt spray, the anti-corrosion layer can isolate the weld from direct contact with the environment, thereby extending the service life of the weld.
[0038] The anti-corrosion layer can be a zinc-rich primer or other materials in existing technologies such as polyurethane. When the anti-corrosion layer is a zinc-rich primer, in specific implementation, the zinc-rich primer should be applied by brushing or spraying after the weld has cooled and the weld slag has been cleaned.
[0039] In one embodiment of this application, the relevant dimensions will be further described.
[0040] The welding length between the anchor bar 200 and the main bearing pile pipe 100 is d1, which satisfies 200mm≤d1≤400mm. Here, d1 can be any combination of 200mm, 250mm, 300mm, 350mm, 400mm or more. The welding length d1 is between 200mm and 400mm, which ensures that there is sufficient connection area between the anchor bar 200 and the main bearing pile pipe 100. This helps to disperse and resist forces from all directions, thereby improving the overall bearing capacity of the photovoltaic ground pile.
[0041] A longer weld length can increase the strength and toughness of the weld, enabling it to better withstand dynamic and static loads and ensuring the stability of photovoltaic ground piles during long-term use.
[0042] In another embodiment of this application, the length of the main load-bearing pile pipe 100 is h1, where h1 satisfies 1200mm ≤ h1 ≤ 1800mm. h1 can be within any range of 1200mm, 1300mm, 1500mm, 1700mm, 1800mm, or any combination thereof. The length h1 of the main load-bearing pile pipe 100 falling within this range ensures that the pile has sufficient bearing capacity. A longer pile pipe can more effectively distribute and transfer the load from the superstructure, thereby reducing the pressure on the foundation and improving its stability.
[0043] The length h1 of the main bearing pile pipe 100 is within this range, which is neither too long to cause construction difficulties nor too short to affect the bearing capacity. This allows construction personnel to operate more conveniently and quickly when installing the ground piles, thereby improving construction efficiency.
[0044] In another embodiment of this application, the length of the anchor bar 200 is h2, where h2 satisfies 1000mm ≤ h2 ≤ 1500mm. h2 can be any combination of 1000mm, 1200mm, 1300mm, 1500mm, or more. The length h2 of the anchor bar 200 being within this range ensures sufficient connection area and depth between the pile and the foundation, thereby improving connection strength. A longer anchor bar 200 can be better embedded in the foundation, forming a more stable connection and enhancing the pile's pull-out and overturning resistance.
[0045] In the specific implementation stage, firstly, a large-diameter foundation pit with a diameter of (155-255) mm and a depth of (300-500) mm is dug on the foundation. Then, according to the distribution of the anchor bars 200, a small-diameter foundation pit with a diameter of (15-35) mm and a length of (800-1200) mm is dug in the large-diameter foundation pit. Finally, the anchor bars 200 are aligned and inserted into the small-diameter foundation pit and the pile is poured. In this way, the structural strength of the entire photovoltaic ground pile can be guaranteed.
[0046] In one embodiment of this application, the distance between the through hole 100a and the first end 101 is d2, which satisfies 10mm≤d2≤15mm. Here, d2 can be any two of 10mm, 12mm, 13mm, 15mm or more. A suitable distance can ensure that the through hole 100a will not affect the structural strength of the main bearing pile pipe 100 too much, that is, it can ensure that the stability of the entire photovoltaic support is improved when the photovoltaic support is connected to the photovoltaic ground pile.
[0047] Please see Figure 1 The main load-bearing pile tube 100 has a cavity formed inside, with openings at both ends. This cavity design not only reduces the self-weight but also helps to improve the load-bearing capacity of the pile. With the same amount of material, the cavity pile has higher bending stiffness and shear strength than the solid pile, and can better resist external loads and deformations.
[0048] The cavity design allows concrete to fill the interior of the main load-bearing pile pipe 100 more quickly, thereby improving the pouring efficiency and ensuring that the main load-bearing pile pipe 100 and the concrete are fully bonded together, thus guaranteeing the overturning resistance of the main load-bearing pile pipe 100.
[0049] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A photovoltaic ground pile for hard rock-soil composite strata, characterized in that, include: The main bearing pile pipe has a first end and a second end that are arranged opposite to each other along its axial direction, and the first end is provided with a through hole extending in a first direction; as well as Multiple anchor bars are connected to the second end and are evenly distributed along the circumference of the main bearing pile pipe; In this configuration, multiple anchor bars extend along the axial direction of the main load-bearing pile pipe, and the main load-bearing pile pipe and multiple anchor bars are staggered along the axial direction of the main load-bearing pile pipe.
2. The photovoltaic ground pile for hard composite soil and rock strata according to claim 1, characterized in that, The outer surface of the anchor bar is threaded.
3. The photovoltaic ground pile for hard rock-soil composite strata according to claim 1, characterized in that, The anchoring bars are welded to the main load-bearing pile pipe.
4. The photovoltaic ground pile for hard rock-soil composite strata according to claim 3, characterized in that, The anchoring bar and the main bearing pile pipe have a weld, and an anti-corrosion layer is provided in the weld.
5. The photovoltaic ground pile for hard rock-soil composite strata according to claim 3, characterized in that, The welding length between the anchor bar and the main load-bearing pile pipe is d1, and d1 satisfies 200mm≤d1≤400mm.
6. The photovoltaic ground pile for hard rock-soil composite strata according to claim 1, characterized in that, The length of the main bearing pile pipe is h1, and h1 satisfies 1200mm≤h1≤1800mm; And / or, the length of the anchor bar is h2, where h2 satisfies 1000mm≤h2≤1500mm.
7. The photovoltaic ground pile for hard rock-soil composite strata according to claim 1, characterized in that, The distance between the through hole and the first end is d2, and d2 satisfies 10mm≤d2≤15mm.
8. The photovoltaic ground pile for hard composite soil and rock strata according to claim 1, characterized in that, The main bearing pile tube has a cavity inside, and the cavity has openings at both ends.