Photovoltaic pile foundation suitable for desert area

Abstract

The invention relates to the technical field of pile foundations, in particular to a photovoltaic pile foundation applicable to desert areas, which can be mounted in sand and comprises a pile foundation structure body and a binding material. A hole is dug downwards in the sand body, the bottom of the pile foundation structure body is vertically arranged in the hole, and a binding material is poured in the hole and between the pile foundation structure body and the inner wall of the hole. The stability of the photovoltaic pile foundation structure can be improved, so that the scheme does not need to flatten a desert or a sand land in a large area, and photovoltaic supports and assemblies can be mounted and laid along with the local terrain; in addition, the binding material used in the scheme is a degradable organic high polymer material, so that pollution to the environment is avoided. According to the photovoltaic pile foundation structure, the stability of the pile foundation structure body is enhanced through the supporting body, the anti-overturning effect is good, and the structure is simple.

Description

Technical Field

[0001] The invention belongs to the technical field of pile foundations, and in particular relates to a photovoltaic pile foundation suitable for desert areas. Background Art

[0002] By the end of 2021, the total installed capacity of photovoltaic power generation in desert areas has exceeded 10 million kilowatts. However, compared with Gobi and desert areas, when constructing photovoltaic power stations in desert areas, due to the loose characteristics of wind-blown sand in desert areas, the installation of photovoltaic pile foundations on wind-blown sand has unstable foundations and is prone to pile overturning, resulting in damage to photovoltaic modules, especially in the case of sandstorms.

[0003] At present, the construction process of rotary drilling and pile injection is adopted in desert areas. Its main construction procedures include land leveling, water consolidation, replacement and rolling, pile position setting, casing burial, mud preparation, rotary drilling, hole cleaning, steel cage hanging, and concrete pouring. Its construction procedures are complicated and the construction volume is large. Since the installation of photovoltaic pile foundation is only in local areas of the desert, there is no need to carry out comprehensive land leveling, water consolidation, replacement and rolling and other processes. At the same time, the use of concrete pouring in desert areas will also cause environmental pollution.

[0004] Therefore, a photovoltaic pile foundation suitable for desert areas is proposed, which can be used in desert areas, has good stability, good anti-overturning effect, simple structure, and will not cause pollution to the environment. Summary of the invention

[0005] In view of the above problems, the present invention proposes a photovoltaic pile foundation suitable for desert areas. The photovoltaic pile foundation structure strengthens the stability of the main body through a support body; and uses a bonding material composed of degradable organic polymer materials and aeolian sand to fill the holes, thereby improving the stability of the photovoltaic pile foundation structure, having good anti-overturning effect, simple structure, and will not cause pollution to the environment.

[0006] A photovoltaic pile foundation suitable for desert areas can be installed in a sand body, comprising a pile foundation structure body and a bonding material; a hole is dug downward on the sand body, the bottom of the pile foundation structure body is vertically arranged in the hole, and the bonding material is poured in the hole between the pile foundation structure body and the inner wall of the hole.

[0007] In a preferred embodiment of the present scheme, the bonding material consists of a degradable organic polymer bonding agent and aeolian sand.

[0008] The bonding material can enhance the stability of the pile foundation and prevent the main body of the photovoltaic pile foundation structure from overturning, especially during sandstorms.

[0009] In a preferred embodiment of this scheme, the main body of the pile foundation structure is provided with at least one support body, and the support body includes a plurality of support rods evenly distributed around the axis of the main body of the pile foundation structure; the inner ends of the support rods are connected to the main body of the pile foundation structure, and the outer ends thereof extend outwards, which can help to enhance the stability of the main body of the pile foundation structure and make the pile foundation structure more resistant to overturning.

[0010] In a preferred embodiment of this solution, the distance from the outer end of the support rod to the main axis of the pile foundation structure is smaller than the hole radius, so that there is a gap between the support body and the inner wall of the hole, which facilitates the installation of the pile foundation structure.

[0011] In a preferred embodiment of the present solution, the projections of the support rods of the two adjacent support bodies on the horizontal plane are staggered.

[0012] In a preferred embodiment of the present invention, the outer end of the support rod is an inclined rod extending outward and upward.

[0013] In a preferred embodiment of this scheme, the support body further comprises a sleeve ring, through which the support body is slidably sleeved on the main body of the pile foundation structure, and the support rod is connected to the outside of the sleeve ring; the outer wall of the main body of the pile foundation structure is provided with a vertical slide groove, and the inner surface of the sleeve ring is correspondingly provided with a pin shaft inserted into the vertical slide groove; the right side of the vertical slide groove is provided with a plurality of inverted L-shaped positioning grooves. By moving the pin shaft to the bottom of the L-shaped positioning groove at different height positions, the height adjustment of the support body can be achieved, so that the installation position of the support body is adapted to the depth in the hole, so that this scheme can be suitable for use on construction sites with different construction requirements.

[0014] In a preferred embodiment of the present invention, the sleeve ring is also threaded with a screw, which can pass through the sleeve ring and abut against the outer wall of the pile foundation structure body. The sleeve ring can be locked by tightening the screw.

[0015] Beneficial effects of the present invention:

[0016] (1) This solution uses adhesive materials to fill holes to improve the stability of the photovoltaic pile foundation structure. Therefore, this solution does not require large-scale leveling of deserts or sandy land, and photovoltaic brackets and components can be installed and laid according to the local terrain. In addition, the adhesive material used in this solution is a degradable organic polymer material and will not cause pollution to the environment.

[0017] (2) The photovoltaic pile foundation structure strengthens the stability of the main body of the pile foundation structure through the support body, has good anti-overturning effect, and has a simple structure.

[0018] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic side view of a pile foundation structure according to Embodiment 1 of the present invention is shown;

[0021] Figure 2 A schematic diagram of a top view of a pile foundation structure according to Embodiment 1 of the present invention is shown;

[0022] Figure 3 A schematic diagram of a pile foundation structure according to Embodiment 1 of the present invention is shown;

[0023] Figure 4 A schematic diagram of a pile foundation structure according to Embodiment 2 of the present invention is shown;

[0024] Figure 5 A schematic diagram of a pile foundation structure according to Embodiment 3 of the present invention is shown;

[0025] Figure 6 A schematic diagram of a support body according to Embodiment 3 of the present invention is shown;

[0026] Among them, 1 is the main body of the pile foundation structure; 2 is the sand body; 3 is the bonding material; 4 is the supporting body; 101 is the vertical slide groove; 102 is the inverted L-shaped positioning groove; 401 is the supporting rod; 402 is the set ring; 4021 is the pin shaft; 4022 is the screw. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second" etc. in the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged in appropriate circumstances, so that the embodiments of the present application described here. In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" etc. are based on the orientation or positional relationship shown in the accompanying drawings.

[0029] Example 1

[0030] like Figure 1 As shown, a photovoltaic pile foundation suitable for desert areas includes a pile foundation structure body 1 and two groups of support bodies 4 arranged on the pile foundation structure body 1. The bottom of the pile foundation structure body 1 is vertically arranged in a hole of a sand body 2; and a bonding material 3 is filled in the hole.

[0031] In this embodiment, the bonding material 3 is composed of a degradable organic polymer bonding agent and aeolian sand. The bonding material 3 can maintain sufficient strength to support the photovoltaic module, enhance the stability of the pile foundation, and prevent the pile foundation structure body 1 from overturning.

[0032] For further reference, Figure 3 As shown, in this solution, the support body 4 includes four support rods 401 evenly distributed around the axis of the pile foundation structure body 1; the inner ends of the support rods 401 are connected to the pile foundation structure body 1, and the outer ends of the support rods 401 extend radially outward along the pile foundation structure body 1. The design of the support rods 401 can help enhance the anti-overturning effect of the pile foundation structure body 1.

[0033] refer to Figure 2 As shown, in this solution, the distance from the outer end of the support rod 401 to the axis of the pile foundation structure body 1 is smaller than the hole radius, so that there is a gap between the support body 4 and the inner wall of the hole, which facilitates the installation of the pile foundation mechanism.

[0034] refer to Figure 2 As shown, in this embodiment, the projections of the support rods 401 of the two support bodies 4 on the horizontal plane are staggered and distributed, and the structural stability is good.

[0035] Furthermore, in this embodiment, the degradable organic polymer binder is a binder material composed of one of sodium carboxymethyl cellulose or polyvinyl alcohol and aeolian sand.

[0036] It should be noted that sodium carboxymethyl cellulose is an anionic polymer compound obtained by reacting natural cellulose with caustic soda and monochloroacetic acid, with a molecular weight ranging from several thousand to one million. It can enhance the stability of pile foundations.

[0037] Example 2

[0038] The difference between this embodiment and the first embodiment is that the connection angle between the support rod 401 and the pile foundation structure body 1 is different, and the degradable organic polymer adhesive used is different.

[0039] Specifically, refer to Figure 4 As shown, in this embodiment, the outer end of the support rod 401 is an inclined rod extending outward and upward. The design of the inclined rod makes the length of the support rod 401 longer and helps to increase the contact area between the support rod 401 and the adhesive material.

[0040] In this embodiment, the degradable organic polymer binder is polyvinyl alcohol.

[0041] It should be noted that polyvinyl alcohol is an organic compound, a white flake, flocculent or powdery solid, odorless; soluble in water, it is an extremely safe high molecular organic substance, non-toxic to the human body. Polyvinyl alcohol is an important chemical raw material, used to make polyvinyl acetal, gasoline-resistant pipes and vinylon synthetic fibers, fabric treatment agents, emulsifiers, paper coatings, adhesives, glues, etc.

[0042] Example 3

[0043] The difference between this embodiment and the first embodiment is that in this embodiment, the support body 4 further includes a sleeve ring 402 .

[0044] refer to Figure 5 As shown, in this embodiment, the sleeve ring 402 can be slid up and down and sleeved on the pile foundation structure body 1, and the support rod 401 is connected to the outside of the sleeve ring 402, so that this solution can adjust the setting position of the support body 4 according to actual construction requirements.

[0045] refer to Figure 5 , Figure 6 As shown, in this embodiment, a vertical slide groove 101 is provided on the outer wall of the pile foundation structure body 1, and a pin shaft 4021 inserted into the vertical slide groove 101 is correspondingly provided on the inner surface of the set ring 402; a plurality of inverted L-shaped positioning grooves 102 are provided on the right side of the vertical slide groove 101; a screw 4022 is also screwed on the set ring 402, and the screw 4022 is arranged on the other side opposite to one side of the pin shaft 4021. The screw 4022 can pass through the set ring 402 and abut against the outer wall of the pile foundation structure body 1, so that after the pin shaft 4021 of the support body 4 is adjusted to a suitable inverted L-shaped positioning groove 102, the support body 4 can be locked by the screw 4022.

[0046] The present invention is based on the above technical solution and has the following effects: the present solution uses adhesive materials to fill holes to improve the stability of the photovoltaic pile foundation structure, so that the present solution does not require large-scale leveling of deserts or sandy land, and photovoltaic brackets and components can be installed and laid according to the local terrain; in addition, the adhesive material used in the present solution is a degradable organic polymer material and will not cause pollution to the environment.

[0047] The photovoltaic pile foundation structure strengthens the stability of the main body of the pile foundation structure through the supporting body, has good anti-overturning effect and a simple structure.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic pile foundation suitable for desert areas, the pile foundation being installed in a sand body (2), characterized in that: It comprises a pile foundation structure body (1) and a bonding material (3); A hole is dug downward on the sand body (2), and the bottom of the pile foundation structure body (1) is vertically arranged in the hole. In the hole, a bonding material (3) is poured between the pile foundation structure body (1) and the inner wall of the hole.

2. The photovoltaic pile foundation according to claim 1, characterized in that: The bonding material (3) is composed of a degradable organic polymer bonding agent and aeolian sand; The degradable organic polymer binder is a bonding material composed of sodium carboxymethyl cellulose or polyvinyl alcohol and aeolian sand.

3. The photovoltaic pile foundation according to any one of claims 1 or 2, characterized in that: The pile foundation structure body (1) is provided with at least one support body (4), and the support body (4) comprises a plurality of support rods (401) evenly distributed around the axis of the pile foundation structure body (1); The inner end of the support rod (401) is connected to the pile foundation structure body (1), and the outer end thereof extends outward.

4. The photovoltaic pile foundation according to claim 3, characterized in that: The distance from the outer end of the support rod (401) to the axis of the pile foundation structure body (1) is smaller than the hole radius, so that a gap exists between the support body (4) and the inner wall of the hole.

5. The photovoltaic pile foundation according to claim 3, characterized in that: The projections of the support rods (401) of the two adjacent support bodies (4) on the horizontal plane are staggered.

6. The photovoltaic pile foundation according to claim 5, characterized in that: The outer end of the support rod (401) is an inclined rod extending outward and upward.

7. The photovoltaic pile foundation according to claim 5, characterized in that: The support body (4) further comprises a sleeve ring (402), the support body (4) is slidably sleeved on the pile foundation structure body (1) via the sleeve ring (402), and the support rod (401) is connected to the outside of the sleeve ring (402); The outer wall of the pile foundation structure body (1) is provided with a vertical slide groove (101), and the inner surface of the sleeve ring (402) is correspondingly provided with a pin shaft (4021) inserted into the vertical slide groove (101); A plurality of inverted L-shaped positioning grooves (102) are provided on the right side of the vertical sliding groove (101).

8. The photovoltaic pile foundation according to claim 7, characterized in that: The sleeve ring (402) is also threaded with a screw (4022), and the screw (4022) can pass through the sleeve ring (402) and abut against the outer wall of the pile foundation structure body (1).

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