Offshore fixed photovoltaic foundation pile

Abstract

The utility model discloses an offshore fixed photovoltaic foundation pile, which belongs to the technical field of offshore pile foundations and comprises an upper pile section, a lower pile section and a transition section connected between the upper pile section and the lower pile section, and a stiffening component is arranged on the upper portion of the lower pile section. The stiffening parts are divided into a fixed stiffening part directly welded on the lower pile section and a movable stiffening part sleeved on the lower pile section; when the movable stiffening component is adopted, a sinking stopping plate capable of preventing the movable stiffening component from sinking is welded to the middle of the lower pile section. Under the condition that the displacement of the pile top of the foundation pile is not changed, the horizontal bearing capacity of the offshore photovoltaic foundation pile is improved, large wind wave loads can be resisted, the offshore photovoltaic horizontal displacement is reduced, the engineering quantity of the foundation pile is reduced, and safer operation of the offshore photovoltaic foundation pile is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to offshore pile foundation technical field especially a kind of offshore fixed photovoltaic pile foundation. BACKGROUND

[0002] Offshore photovoltaic is a kind of brand-new ocean energy utilization and resource development mode.It has the characteristics of high power generation,less land occupation,easy combination with other industries.Compared with land photovoltaic,water surface is wide,daylight is long,electricity generation is 5%-10% higher than land photovoltaic.The large-scale development of offshore photovoltaic project will provide new development ideas and paths for energy supply in coastal areas.Offshore pile foundation photovoltaic market prospect is broad,which is one of the mainstreams of future new energy development and construction.

[0003] The characteristics of offshore photovoltaic pile foundation are long cantilever section and large horizontal load,which withstands the impact of sea waves,sea ice and other loads all year round,so the bending moment of pile body at seabed mud surface is large,tilt or bending failure is easy to occur.During the service period of traditional offshore photovoltaic pile foundation,problems such as long-term withstand of storm,heavy waves,marine organisms attachment,high temperature,high humidity and high salt fog will corrode photovoltaic support pile foundation and reduce its stability and durability.Seabed surface layer is a permeation mixing area formed by seawater and soil layer,which is silt soil layer with low horizontal bearing capacity.When pile withstands large horizontal force,displacement of surface soil and pile increases,so offshore photovoltaic foundation must have enough horizontal bearing capacity to resist large wind and wave load.

[0004] Offshore pile foundation photovoltaic generally uses steel pipe pile,which has large engineering quantity and high cost.Surface soil of seabed is generally soft soil,which is mostly fill layer,silt layer or silt soil layer.Under the action of sea wind,sea wave,water flow and sea ice,displacement of offshore photovoltaic pile foundation shallow soft soil is large,so large diameter pile is needed to control displacement.The existing conventional offshore fixed photovoltaic pile foundation,as shown in the figure,includes upper pile section 1,transition section 2 and lower pile section 3. Figure 1

[0005] Therefore,under the condition of ensuring that the displacement of pile top of pile foundation does not change,how to reduce the engineering quantity of pile foundation becomes a problem to be solved in the development of offshore photovoltaic. UTILITY MODEL CONTENTS

[0006] The technical problem to be solved by the utility model is to provide an offshore fixed photovoltaic pile foundation,which can reduce horizontal displacement of offshore photovoltaic and reduce engineering quantity of pile foundation under the condition of ensuring that the displacement of pile top of pile foundation does not change.

[0007] To solve the above technical problem,the technical scheme adopted by the utility model is:

[0008] ​The utility model discloses a kind of offshore fixed photovoltaic piles, including upper pile section, lower pile section and the transition section connecting the upper pile section and the lower pile section, reinforcing member is provided in the upper portion of the lower pile section;The reinforcing member is divided into fixed reinforcing member welded directly on lower pile section and movable reinforcing member sleeved on lower pile section;When using movable reinforcing member, sinking prevention plate that can prevent movable reinforcing member from sinking is welded in the middle of lower pile section.

[0009] The utility model discloses further improve in technical scheme be: the fixed reinforcing member be equidistance circumferential welding on the lower pile section several right triangle vertical stiffening plate, the right angle of right triangle vertical stiffening plate with the lower pile section is welded together.

[0010] The utility model discloses further improve in technical scheme be: the fixed reinforcing member be equidistance circumferential welding on the lower pile section several isosceles triangle vertical stiffening plate, the hypotenuse of isosceles triangle vertical stiffening plate with the lower pile section is welded together, and welding has the first horizontal stiffening plate that is connected together in the middle portion of each isosceles triangle vertical stiffening plate each isosceles triangle vertical stiffening plate.

[0011] The utility model discloses further improve in technical scheme be: the fixed reinforcing member be equidistance circumferential welding on the lower pile section several isosceles trapezoidal vertical stiffening plate, the lower base of isosceles trapezoidal vertical stiffening plate with the lower pile section is welded together, and welding has the second horizontal stiffening plate that is connected together between each isosceles trapezoidal vertical stiffening plate upper and lower two layers each isosceles trapezoidal vertical stiffening plate.

[0012] The utility model discloses further improve in technical scheme be: the fixed reinforcing member be equidistance circumferential welding on the lower pile section several inverted half cap shape vertical stiffening plate, the inverted half cap shape vertical stiffening plate is by setting up the right triangle plate of straight trapezoidal board in upper end, setting up the rectangle plate of middle end and setting up the right triangle plate of lower end, and welding has the third horizontal stiffening plate that is connected together between each inverted half cap shape vertical stiffening plate upper and lower two layers each inverted half cap shape vertical stiffening plate;The right angle of straight trapezoidal board and right triangle plate with the lower pile section is welded together.

[0013] The utility model discloses further improve in technical scheme be: the fixed reinforcing member be equidistance circumferential welding on the lower pile section several rectangle vertical stiffening plate, the outside of rectangle vertical stiffening plate is provided with the vertical outside annular stiffening plate of barrel.

[0014] The further improvement in the technical scheme of the utility model lies in that: the movable stiffening component comprises an annular sleeve sleeved on the lower pile section, a plurality of isosceles triangle vertical stiffening plates are equidistantly welded on the outer side of the annular sleeve in the circumferential direction, the hypotenuse of the isosceles triangle vertical stiffening plate is welded together with the annular sleeve, and a first horizontal stiffening plate connecting the isosceles triangle vertical stiffening plates together is welded in the middle of each isosceles triangle vertical stiffening plate.

[0015] The further improvement in the technical scheme of the utility model lies in that: the movable stiffening component comprises an annular sleeve sleeved on the lower pile section, a plurality of isosceles triangle vertical stiffening plates are equidistantly welded on the outer side of the annular sleeve in the circumferential direction, the hypotenuse of the isosceles triangle vertical stiffening plate is welded together with the annular sleeve, and a first horizontal stiffening plate connecting the isosceles triangle vertical stiffening plates together is welded in the middle of each isosceles triangle vertical stiffening plate.

[0016] The further improvement in the technical scheme of the utility model lies in that: the movable stiffening component comprises an annular sleeve sleeved on the lower pile section, a plurality of isosceles triangle vertical stiffening plates are equidistantly welded on the outer side of the annular sleeve in the circumferential direction, the hypotenuse of the isosceles triangle vertical stiffening plate is welded together with the annular sleeve, and a first horizontal stiffening plate connecting the isosceles triangle vertical stiffening plates together is welded in the middle of each isosceles triangle vertical stiffening plate.

[0017] The further improvement in the technical scheme of the utility model lies in that: the movable stiffening component comprises an annular sleeve sleeved on the lower pile section, a plurality of isosceles triangle vertical stiffening plates are equidistantly welded on the outer side of the annular sleeve in the circumferential direction, the hypotenuse of the isosceles triangle vertical stiffening plate is welded together with the annular sleeve, and a first horizontal stiffening plate connecting the isosceles triangle vertical stiffening plates together is welded in the middle of each isosceles triangle vertical stiffening plate.

[0018] Thanks to the above technical scheme, the utility model has the following technical progress:

[0019] The utility model discloses a movable stiffening component and a fixed stiffening component are arranged at the lower pile section of the foundation pile,

[0020] The utility model discloses a movable stiffening component and a fixed stiffening component are arranged at the lower pile section of the foundation pile, DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a schematic diagram of a conventional offshore fixed photovoltaic pile structure in the background art of the present application;

[0023] Figure 2 is a schematic diagram of an offshore fixed photovoltaic pile provided by Embodiment 1 of the present application;

[0024] Figure 3 is a sectional view of the offshore fixed photovoltaic pile provided by Embodiment 1 of the present application;

[0025] Figure 4 is a schematic diagram of an offshore fixed photovoltaic pile provided by Embodiment 2 of the present application;

[0026] Figure 5 is a sectional view of the offshore fixed photovoltaic pile provided by Embodiment 2 of the present application;

[0027] Figure 6 is a schematic diagram of an offshore fixed photovoltaic pile provided by Embodiment 3 of the present application;

[0028] Figure 7 is a sectional view of the offshore fixed photovoltaic pile provided by Embodiment 3 of the present application;

[0029] Figure 8 is a schematic diagram of an offshore fixed photovoltaic pile provided by Embodiment 4 of the present application;

[0030] Figure 9 is a sectional view of the offshore fixed photovoltaic pile provided by Embodiment 4 of the present application;

[0031] Figure 10 is a schematic diagram of an offshore fixed photovoltaic pile provided by Embodiment 5 of the present application;

[0032] Figure 11 is a sectional view of the offshore fixed photovoltaic pile provided by Embodiment 5 of the present application;

[0033] Figure 12 is a schematic diagram of an offshore fixed photovoltaic pile provided by Embodiment 6 of the present application;

[0034] Figure 13is a sectional view of the offshore fixed photovoltaic pile provided by the embodiment 6 of the utility model;

[0035] Figure 14 is a structural schematic view of the offshore fixed photovoltaic pile provided by the embodiment 7 of the utility model;

[0036] Figure 15 is a sectional view of the offshore fixed photovoltaic pile provided by the embodiment 7 of the utility model;

[0037] Figure 16 is a structural schematic view of the offshore fixed photovoltaic pile provided by the embodiment 8 of the utility model;

[0038] Figure 17 is a sectional view of the offshore fixed photovoltaic pile provided by the embodiment 8 of the utility model;

[0039] Figure 18 is a structural schematic view of the offshore fixed photovoltaic pile provided by the embodiment 9 of the utility model;

[0040] Figure 19 is a sectional view of the offshore fixed photovoltaic pile provided by the embodiment 9 of the utility model;

[0041] Wherein, 1, pile section is upper;2, transition section;3, pile section is lower;4, right triangle vertical stiffener;5, isosceles triangle vertical stiffener;6, first horizontal stiffener;7, isosceles trapezoidal vertical stiffener;8, second horizontal stiffener;9, inverted cap-shaped plate;10, third horizontal stiffener;11, rectangular vertical stiffener;12, vertical outer side annular stiffener;13, sinking stop plate;14, annular sleeve. DETAILED DESCRIPTION

[0042] It should be noted that the specification and claims of the utility model and the above-mentioned drawings and their any deformation of terms "include" and "have", it is intended to cover the non-exclusive inclusion, for example, the process, method, system, product or equipment including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "several" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0046] A fixed offshore photovoltaic foundation pile comprises an upper pile section 1, a lower pile section 3 and a transition section 2 connecting the upper pile section 1 and the lower pile section 3. A reinforcing component is provided on the upper part of the lower pile section 3; the reinforcing component is divided into a fixed reinforcing component directly welded to the lower pile section 3 and a movable reinforcing component sleeved on the lower pile section 3; when the movable reinforcing component is used, a sinking-stopping plate 13 is welded in the middle of the lower pile section 3 to prevent the movable reinforcing component from sinking.

[0047] Example 1

[0048] like Figure 2 、 3 As shown, the fixed reinforcing components are a plurality of right-angled triangular vertical reinforcing plates 4 equidistantly welded circumferentially on the lower pile section 3 , and a right angle side of the right-angled triangular vertical reinforcing plates 4 is welded to the lower pile section 3 .

[0049] Example 2

[0050] like Figure 4 、 5 As shown, the fixed stiffening components are a number of isosceles triangular vertical stiffening plates 5 equidistantly welded circumferentially on the lower pile section 3, the hypotenuse of the isosceles triangular vertical stiffening plates 5 is welded to the lower pile section 3, and a first transverse stiffening plate 6 is welded in the middle of each isosceles triangular vertical stiffening plate 5 to connect the isosceles triangular vertical stiffening plates 5 together.

[0051] In order to ensure that the foundation piles can sink smoothly, a plurality of through holes may be opened on the first transverse stiffening plate 6 . The size and number of the through holes may be set according to the size of the first transverse stiffening plate 6 .

[0052] Example 3

[0053] like Figure 6 、 7 As shown, the fixed stiffening components are a number of isosceles trapezoidal vertical stiffening plates 7 equidistantly welded circumferentially on the lower pile section 3, the lower base of the isosceles trapezoidal vertical stiffening plates 7 is welded to the lower pile section 3, and two layers of upper and lower second transverse stiffening plates 8 are welded between each isosceles trapezoidal vertical stiffening plate 7 to connect each isosceles trapezoidal vertical stiffening plate 7 together.

[0054] In order to ensure that the foundation piles can sink smoothly, a plurality of through holes may be opened on the second transverse stiffening plate 8 . The size and number of the through holes may be set according to the size of the second transverse stiffening plate 8 .

[0055] Example 4

[0056] like Figure 8 、 9 As shown, the fixed stiffening components are a number of inverted half-hat-shaped vertical stiffening plates 9 equidistantly welded circumferentially on the lower pile section 3. The inverted half-hat-shaped vertical stiffening plates 9 are composed of a right-angled trapezoidal plate (forming a hat brim) arranged at the upper end, a rectangular plate (forming a hat body) arranged at the middle end, and a right-angled triangular plate (forming a hat top) arranged at the lower end. Two layers of upper and lower third transverse stiffening plates 10 are welded between each inverted half-hat-shaped vertical stiffening plate 9 to connect each inverted half-hat-shaped vertical stiffening plate 9 together; the right-angled sides of the right-angled trapezoidal plate and the right-angled triangular plate are welded to the lower pile section 3.

[0057] In order to ensure that the foundation piles can sink smoothly, a plurality of through holes may be opened on the third transverse stiffening plate 10 . The size and number of the through holes may be set according to the size of the third transverse stiffening plate 10 .

[0058] Example 5

[0059] like Figure 10 、 11 As shown, the fixed reinforcing components are a plurality of rectangular vertical reinforcing plates 11 equidistantly circumferentially welded on the lower pile section 3 , and a cylindrical vertical outer annular reinforcing plate 12 is provided on the outer side of the rectangular vertical reinforcing plate 11 .

[0060] The pile driving method provided in Examples 1-5, which matches the fixed offshore photovoltaic foundation piles provided with fixed stiffening components, comprises the following steps:

[0061] S1: The upper pile section 1, transition section 2, lower pile section 3, and the fixed reinforcement components welded to the outside of the lower pile section 3 are welded on land, and after anti-corrosion treatment, they are transported to the offshore construction site.

[0062] S2, using the vibratory hammer pile sinking method, clamping the top of the pile foundation with a hydraulic clamp, and setting a vibratory hammer on the hydraulic clamp. The high-frequency vibration generated by the vibratory hammer is used to sink the foundation pile into the seabed soil;

[0063] S3: Continue to use the vibratory hammer to sink piles, ensuring that all fixed reinforcement components are submerged in the seabed soil and that the pile foundation reaches the designed depth.

[0064] S4, remove the vibratory hammer and hydraulic clamp on the top of the pile foundation, and the construction equipment will leave the site, completing the pile sinking work of the single pile foundation.

[0065] Example 6

[0066] like Figure 12 、 13 As shown, the movable reinforcing component includes an annular sleeve 14 mounted on the lower pile section 3, and a number of isosceles triangular vertical stiffening plates 5 are welded equidistantly around the outside of the annular sleeve 14, the hypotenuse of the isosceles triangular vertical stiffening plates 5 is welded to the annular sleeve 14, and a first transverse stiffening plate 6 is welded in the middle of the isosceles triangular vertical stiffening plates 5 to connect the isosceles triangular vertical stiffening plates 5 together.

[0067] In order to ensure that the foundation piles can sink smoothly, a plurality of through holes can be opened on the first transverse stiffening plate 6 , and the size and number of the through holes can be set according to the size of the first transverse stiffening plate 6 .

[0068] The difference between this embodiment and embodiment 2 is that an annular sleeve 14 that can be sleeved on the lower pile segment 3 is provided on the outer side of the lower pile segment 3 , and the isosceles triangle vertical stiffening plate 5 is welded to the outer side of the annular sleeve 14 .

[0069] Example 7

[0070] like Figure 14 、 15 As shown, the movable reinforcing component includes an annular sleeve 14 mounted on the lower pile section 3, and a number of isosceles trapezoidal vertical stiffening plates 7 are welded equidistantly around the outside of the annular sleeve 14. The lower base of the isosceles trapezoidal vertical stiffening plates 7 is welded to the annular sleeve 13, and two layers of upper and lower second transverse stiffening plates 8 are welded between the isosceles trapezoidal vertical stiffening plates 7 to connect the isosceles trapezoidal vertical stiffening plates 7 together.

[0071] In order to ensure that the foundation piles can sink smoothly, a plurality of through holes may be opened on the second transverse stiffening plate 8 . The size and number of the through holes may be set according to the size of the second transverse stiffening plate 8 .

[0072] The difference between the embodiment and embodiment 3 is that an annular sleeve 14 capable of being sleeved on the lower pile section 3 is arranged on the outer side of the lower pile section 3, and the isosceles trapezoidal vertical stiffening plates 7 are welded on the outer side of the annular sleeve 14.

[0073] Embodiment 8

[0074] As shown in Figure 16 , 17 , the movable stiffening component comprises the annular sleeve 14 sleeved on the lower pile section 3, a plurality of inverted half-hat-shaped vertical stiffening plates 9 are equidistantly and circumferentially welded on the outer side of the annular sleeve 14, the inverted half-hat-shaped vertical stiffening plate 9 is composed of a right-angled trapezoidal plate arranged at the upper end (forming a hat brim), a rectangular plate arranged at the middle end (forming a hat body) and a right-angled triangular plate arranged at the lower end (forming a hat top), and a third transverse stiffening plate 10 is welded between each inverted half-hat-shaped vertical stiffening plate 9 to connect the inverted half-hat-shaped vertical stiffening plates 9 together; the right-angled edges of the right-angled trapezoidal plate and the right-angled triangular plate are welded together with the lower pile section 3.

[0075] In order to ensure that the pile can be smoothly sunk, a plurality of through holes can be formed on the third transverse stiffening plate 10, and the size and number of the through holes can be set according to the size of the third transverse stiffening plate 10.

[0076] The difference between the embodiment and embodiment 4 is that an annular sleeve 14 capable of being sleeved on the lower pile section 3 is arranged on the outer side of the lower pile section 3, and the inverted half-hat-shaped vertical stiffening plates 9 are welded on the outer side of the annular sleeve 14.

[0077] Embodiment 9

[0078] As shown in Figure 18 , 19 , the movable stiffening component comprises the annular sleeve 14 sleeved on the lower pile section 3, a plurality of rectangular vertical stiffening plates 11 are equidistantly and circumferentially welded on the outer side of the annular sleeve 14, and a cylindrical vertical outer side annular stiffening plate 12 is arranged on the outer side of the rectangular vertical stiffening plate 11.

[0079] The difference between the embodiment and embodiment 5 is that an annular sleeve 14 capable of being sleeved on the lower pile section 3 is arranged on the outer side of the lower pile section 3, and the rectangular vertical stiffening plates 11 are welded on the outer side of the annular sleeve 14.

[0080] The pile sinking method provided by the embodiments 6-9 matches the offshore fixed photovoltaic pile sleeved with the movable stiffening component, and comprises the following steps:

[0081] Step 1: Complete the welding of the upper pile section 1, transition section 2, lower pile section 3 and anti-sinking plate 13 of the foundation pile on land, that is, weld the upper pile section 1, transition section 2, lower pile section 3 and anti-sinking plate 13 into a whole; then complete the welding of the movable stiffening components on land, that is, weld the movable stiffening components into a whole, and transport them to the offshore construction area after anti-corrosion treatment;

[0082] Step 2: Using a vibratory hammer pile sinking method, the top of the pile foundation is clamped with a hydraulic clamp. A vibratory hammer is installed on the hydraulic clamp. The high-frequency vibration generated by the vibratory hammer is used to sink the foundation pile (the upper pile section 1, transition section 2, lower pile section 3 and anti-sinking plate 13 are welded together as a whole) into the seabed soil;

[0083] Step 3: Continue to sink the pile using a vibratory hammer to ensure that the upper pile section 1, transition section 2, lower pile section 3 and anti-sinking plate 13 are all submerged in the seabed soil, and the pile foundation reaches the designed depth;

[0084] Step 4: Remove the vibratory hammer and hydraulic clamp from the top of the pile foundation;

[0085] Step 5: Use a crane to lift the movable reinforcing component, and insert the annular sleeve 14 into the upper pile section 1, sinking it into the corresponding soil layer under the action of gravity;

[0086] If the movable reinforcing component cannot be sunk into the corresponding soil layer smoothly, use a reusable steel casing and repeat steps 3 and 4 to sink the movable reinforcing component into the corresponding soil;

[0087] Step 6: The construction equipment leaves the site and the sinking of the single pile foundation is completed.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An offshore fixed photovoltaic foundation pile, comprising an upper pile section (1), a lower pile section (3), and a transition section (2) connecting the upper pile section (1) and the lower pile section (3), characterized in that: A stiffening component is provided on the upper portion of the lower pile segment (3); the stiffening component is divided into a fixed stiffening component directly welded to the lower pile segment (3) and a movable stiffening component sleeved on the lower pile segment (3); when the movable stiffening component is used, a sinking prevention plate (13) is welded to the middle portion of the lower pile segment (3) to prevent the movable stiffening component from sinking.

2. The offshore fixed photovoltaic pile according to claim 1, characterized in that: The fixed stiffening component is a plurality of right-angled triangular vertical stiffening plates (4) equidistantly circumferentially welded on the lower pile section (3), and a right angle side of the right-angled triangular vertical stiffening plates (4) is welded to the lower pile section (3).

3. The offshore fixed photovoltaic pile according to claim 1, characterized in that: The fixed stiffening component is a plurality of isosceles triangular vertical stiffening plates (5) equidistantly circumferentially welded on the lower pile section (3), the hypotenuse of the isosceles triangular vertical stiffening plates (5) being welded to the lower pile section (3), and a first transverse stiffening plate (6) is welded in the middle of each isosceles triangular vertical stiffening plate (5) for connecting the isosceles triangular vertical stiffening plates (5) together.

4. The offshore fixed photovoltaic foundation pile according to claim 1, characterized in that: The fixed stiffening component is a plurality of isosceles trapezoidal vertical stiffening plates (7) equidistantly circumferentially welded on the lower pile section (3), the lower bottom edges of the isosceles trapezoidal vertical stiffening plates (7) are welded to the lower pile section (3), and two upper and lower layers of second transverse stiffening plates (8) are welded between the isosceles trapezoidal vertical stiffening plates (7) to connect the isosceles trapezoidal vertical stiffening plates (7) together.

5. The offshore fixed photovoltaic foundation pile according to claim 1, characterized in that: The fixed stiffening component is a plurality of inverted half-hat-shaped vertical stiffening plates (9) equidistantly circumferentially welded on the lower pile section (3), wherein the inverted half-hat-shaped vertical stiffening plates (9) are composed of a right-angled trapezoidal plate arranged at the upper end, a rectangular plate arranged at the middle end, and a right-angled triangular plate arranged at the lower end, and two layers of upper and lower third transverse stiffening plates (10) are welded between each inverted half-hat-shaped vertical stiffening plate (9) to connect each inverted half-hat-shaped vertical stiffening plate (9); the right-angled sides of the right-angled trapezoidal plate and the right-angled triangular plate are welded to the lower pile section (3).

6. The offshore fixed photovoltaic foundation pile according to claim 1, characterized in that: The fixed stiffening components are a plurality of rectangular vertical stiffening plates (11) equidistantly circumferentially welded on the lower pile section (3), and cylindrical vertical outer annular stiffening plates (12) are provided on the outer sides of the rectangular vertical stiffening plates (11).

7. The offshore fixed photovoltaic foundation pile according to claim 1, characterized in that: The movable reinforcing component comprises an annular sleeve (14) sleeved on the lower pile section (3), a plurality of isosceles triangular vertical reinforcing plates (5) are welded equidistantly around the outside of the annular sleeve (14), the hypotenuse of the isosceles triangular vertical reinforcing plates (5) is welded to the annular sleeve (14), and a first transverse reinforcing plate (6) is welded to the middle of each isosceles triangular vertical reinforcing plate (5) for connecting the isosceles triangular vertical reinforcing plates (5) together.

8. The offshore fixed photovoltaic foundation pile according to claim 1, characterized in that: The movable reinforcing component comprises an annular sleeve (14) sleeved on the lower pile section (3), a plurality of isosceles trapezoidal vertical reinforcing plates (7) are welded equidistantly around the outside of the annular sleeve (14), the lower bottom edges of the isosceles trapezoidal vertical reinforcing plates (7) are welded to the annular sleeve (14), and two upper and lower layers of second transverse reinforcing plates (8) are welded between the isosceles trapezoidal vertical reinforcing plates (7) to connect the isosceles trapezoidal vertical reinforcing plates (7) together.

9. The offshore fixed photovoltaic pile according to claim 1, characterized in that: The movable reinforcing component comprises an annular sleeve (14) sleeved on the lower pile section (3), and a plurality of inverted half-hat-shaped vertical reinforcing plates (9) are welded equidistantly around the outside of the annular sleeve (14), wherein the inverted half-hat-shaped vertical reinforcing plates (9) are composed of a right-angled trapezoidal plate arranged at the upper end, a rectangular plate arranged at the middle end, and a right-angled triangular plate arranged at the lower end, and two layers of upper and lower third transverse reinforcing plates (10) are welded between each inverted half-hat-shaped vertical reinforcing plates (9) to connect each inverted half-hat-shaped vertical reinforcing plates (9); the right-angled sides of the right-angled trapezoidal plate and the right-angled triangular plate are welded to the annular sleeve (14).

10. The offshore fixed photovoltaic foundation pile according to claim 1, characterized in that: The movable reinforcing component comprises an annular sleeve (14) sleeved on the lower pile section (3), a plurality of rectangular vertical reinforcing plates (11) are welded equidistantly around the outside of the annular sleeve (14), and a cylindrical vertical outer annular reinforcing plate (12) is provided on the outside of the rectangular vertical reinforcing plates (11).

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