Offshore photovoltaic pile foundation structure

Abstract

The offshore photovoltaic pile foundation structure comprises a plurality of herringbone wing plate structures which are distributed in the circumferential direction of a pile foundation and fixed to the surface of the pile foundation, each wing plate structure comprises a main plate and a supporting plate, the main plates are fixed to the surface of the pile foundation and incline towards one side, and the supporting plates are fixed between the surface of the pile foundation and the main plates. The inclination direction of the supporting plate is opposite to that of the main plate, a first wedge-shaped part is arranged at the end, away from the surface of the pile foundation, of the main plate, a second wedge-shaped part is arranged at the bottom end of the main plate, a third wedge-shaped part is arranged at the bottom end of the supporting plate, and the wing plate structure serves as extension of the thickness and the diameter of the pile foundation. The contact area with a seabed soil layer is increased, the pile side friction resistance is increased, the vertical bearing capacity is improved, and the first wedge-shaped part, the second wedge-shaped part and the third wedge-shaped part are prone to penetrating into seabed soil.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore pile foundations, in particular to an offshore photovoltaic pile foundation structure. Background Art

[0002] The characteristics of offshore photovoltaic pile foundations are long cantilever sections and large horizontal loads. They are subjected to the impact of waves, sea ice and other loads all year round. Therefore, the pile body has a large bending moment at the mud surface of the seabed and is prone to tilting or bending damage. During the service period, traditional offshore photovoltaic pile foundations are subjected to long-term storms, huge waves, marine biological attachment, high temperature, high humidity, high salt spray and other problems, which will corrode the photovoltaic support pile foundation and reduce its stability and durability. The surface layer of the seabed is a permeable mixed area formed by the mutual penetration of seawater and soil layers. This part of the soil layer is a silty soil layer with low horizontal bearing capacity. When the pile is subjected to a large horizontal force, the horizontal displacement of the surface soil becomes larger, and the horizontal displacement of the pile also becomes larger. Therefore, the offshore photovoltaic foundation must have sufficient horizontal bearing capacity to resist large wind and wave loads.

[0003] Traditional offshore photovoltaic pile foundations mainly use prestressed concrete pipe piles or steel pipe piles. Generally, the larger the diameter and the thicker the wall thickness of the pile foundation structure, the stronger its ability to resist bending, compression and horizontal bearing capacity. Under the same requirements for bending, compression and horizontal bearing capacity, compared with steel pipe piles, prestressed concrete pipe piles are cheaper, but the pile body has weaker bending and corrosion resistance. Steel pipe piles have stronger bending and corrosion resistance than prestressed concrete pipe piles, but they use a large amount of steel and have low economic efficiency. In addition, the offshore climate is unpredictable, the seabed environment is complex, and the deep seabed soil layer forms a hard soil layer due to long-term huge pressure. These problems will pose severe challenges to the smooth sinking of offshore photovoltaic pile foundations. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide an offshore photovoltaic pile foundation structure, which can solve the problem that it is difficult to strike a balance between corrosion resistance and economy of traditional offshore foundations, and at the same time solve the problem of difficulty in pile sinking caused by harsh environment.

[0005] To this end, the utility model adopts the following technical solutions:

[0006] An offshore photovoltaic pile foundation structure comprises a plurality of herringbone wing plate structures distributed along the circumference of the pile foundation and fixed on the surface of the pile foundation, wherein the length of the wing plate structure exceeds one third of the length of the pile foundation, the wing plate structure comprises a main board and a support plate, the width of the main board is greater than the width of the support plate, the main board is fixed to the surface of the pile foundation and inclined to one side, the support plate is fixed between the surface of the pile foundation and the main board, the inclination direction of the support plate is opposite to that of the main board, a first wedge-shaped portion is provided at one end of the main board away from the surface of the pile foundation, a second wedge-shaped portion is provided at the bottom end of the main board, and a third wedge-shaped portion is provided at the bottom end of the support plate.

[0007] On the basis of adopting the above technical solutions, the present invention can also adopt the following further technical solutions, or use these further technical solutions in combination:

[0008] The pile foundation includes an upper pile segment, a transition segment and a lower pile segment extending from top to bottom, the upper pile segment and the lower pile segment are both cylindrical and the diameter of the upper pile segment is smaller than the diameter of the lower pile segment, the transition segment is a hollow cone connecting the upper pile segment and the lower pile segment, the maximum diameter of the upper surface of the hollow cone is equal to the maximum diameter of the upper pile segment, the maximum diameter of the lower surface of the hollow cone is equal to the maximum diameter of the lower pile segment, and a plurality of wing plate structures are distributed circumferentially around the lower pile segment and fixed to the surface of the lower pile segment.

[0009] The wing plate structure and the pile foundation surface are both provided with an anti-corrosion layer.

[0010] Compared with the prior art, the utility model has the following advantages and beneficial effects: by arranging the wing plate structure around the pile foundation as an extension of the thickness and diameter of the pile foundation, less steel is used, the cost is low, the economy is high, and the bending, compression and horizontal bearing capacity of the pile foundation are significantly enhanced; the wing plate structure can increase the contact area with the seabed soil layer, thereby increasing the side friction resistance of the pile and improving the vertical bearing capacity; the first wedge-shaped part, the second wedge-shaped part and the third wedge-shaped part of the wing plate structure are easier to penetrate into the seabed soil, making the pile sinking process easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a top view of the utility model.

[0013] Figure 3 and Figure 4 It is a three-dimensional schematic diagram of the wing plate structure of the utility model at different angles.

[0014] Figure 5 It is a three-dimensional schematic diagram of the wing plate structure of the utility model from a top view angle.

[0015] Figure 6 It is a top view of the wing plate structure of the utility model. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the preferred implementation scheme of the present utility model is described below in conjunction with specific embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent elements with the same or similar functions. However, it should be understood that the accompanying drawings are only used for illustrative purposes and cannot be understood as limitations on the present utility model. In order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted, and the positional relationship described in the accompanying drawings is only used for illustrative purposes and cannot be understood as limitations on the present utility model.

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0018] The offshore photovoltaic pile foundation structure provided by the utility model comprises a plurality of herringbone wing plate structures 4 distributed along the circumference of the pile foundation and fixed on the surface of the pile foundation, the length of the wing plate structure 4 exceeds one third of the length of the pile foundation, the wing plate structure 4 comprises a main board 41 and a support plate 42, the width of the main board 41 is greater than the width of the support plate 42, the main board 41 is fixed to the surface of the pile foundation and inclined to one side, the support plate 42 is fixed between the surface of the pile foundation and the main board 41, the inclination direction of the support plate 42 is opposite to that of the main board 41, a first wedge-shaped portion 411 is provided at one end of the main board 41 away from the surface of the pile foundation, a second wedge-shaped portion 412 is provided at the bottom end of the main board 41, and a third wedge-shaped portion 421 is provided at the bottom end of the support plate 42.

[0019] like Figure 2 As shown, in this embodiment, eight wing plate structures 4 are arranged at equal intervals along the circumference of the pile foundation.

[0020] The first wedge-shaped portion 411, the second wedge-shaped portion 412, and the third wedge-shaped portion 421 can reduce the resistance during the pile sinking process, making it easier for the pile foundation to penetrate the seabed soil layer, so that the wing plate structure is closely combined with the soil layer on the side of the pile, thereby increasing the friction resistance on the side of the pile and further increasing the bearing capacity of the pile foundation.

[0021] like Figure 1 As shown, the pile foundation includes an upper pile segment 1, a transition segment 2 and a lower pile segment 3 extending from top to bottom. The upper pile segment 1 and the lower pile segment 1 are both cylindrical and the diameter of the upper pile segment 1 is smaller than the diameter of the lower pile segment 3. The transition segment 2 is a hollow cone connecting the upper pile segment 1 and the lower pile segment 3. The maximum diameter of the upper surface of the hollow cone is equal to the maximum diameter of the upper pile segment 1, and the maximum diameter of the lower surface of the hollow cone is equal to the maximum diameter of the lower pile segment 3. A plurality of wing plate structures 4 are distributed circumferentially around the lower pile segment 3 and fixed to the surface of the lower pile segment 3.

[0022] In this embodiment, the lowest water level in the sea area is at the junction of the transition section 2 and the lower pile section 3.

[0023] The wing plate structure 4 and the surface of the pile foundation are both provided with an anti-corrosion layer.

[0024] According to the description and drawings of the utility model, those skilled in the art can easily manufacture or use the offshore photovoltaic pile foundation structure of the utility model, and can produce the positive effects recorded in the utility model.

[0025] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two mechanisms, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0026] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "inside", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the mechanism or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are also used only for the simplicity of description, and do not indicate or imply relative importance.

[0027] Furthermore, in practicing the claims of the present invention, those skilled in the art may understand and affect variations to the disclosed embodiments by studying the drawings, disclosure, and appended claims. In addition, in the claims and the specification, words such as "comprises", "comprising", etc. do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0028] The above is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. Offshore photovoltaic pile foundation structure, characterized in that: The invention comprises a plurality of herringbone wing plate structures (4) distributed along the circumference of a pile foundation and fixed on the surface of the pile foundation, wherein the length of the wing plate structure (4) exceeds one third of the length of the pile foundation, and the wing plate structure (4) comprises a main plate (41) and a support plate (42), wherein the width of the main plate (41) is greater than the width of the support plate (42), the main plate (41) is fixed on the surface of the pile foundation and inclined to one side, the support plate (42) is fixed between the surface of the pile foundation and the main plate (41), and the inclination direction of the support plate (42) is opposite to that of the main plate (41), and a first wedge-shaped portion (411) is provided at one end of the main plate (41) away from the surface of the pile foundation, a second wedge-shaped portion (412) is provided at the bottom end of the main plate (41), and a third wedge-shaped portion (421) is provided at the bottom end of the support plate (42).

2. The offshore photovoltaic pile foundation structure according to claim 1, characterized in that: The pile foundation comprises an upper pile segment (1), a transition segment (2) and a lower pile segment (3) extending from top to bottom. The upper pile segment (1) and the lower pile segment (3) are both cylindrical and the diameter of the upper pile segment (1) is smaller than the diameter of the lower pile segment (3). The transition segment (2) is a hollow truncated cone connecting the upper pile segment (1) and the lower pile segment (3). The maximum diameter of the upper surface of the hollow truncated cone is equal to the maximum diameter of the upper pile segment (1), and the maximum diameter of the lower surface of the hollow truncated cone is equal to the maximum diameter of the lower pile segment (3). A plurality of wing plate structures (4) are distributed circumferentially around the lower pile segment (3) and are fixed to the surface of the lower pile segment (3).

3. The offshore photovoltaic pile foundation structure according to claim 1, characterized in that: The wing plate structure (4) and the surface of the pile foundation are both provided with an anti-corrosion layer.

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