Barrel type anchoring foundation of floating type offshore photovoltaic structure and installation method of barrel type anchoring foundation

Abstract

The invention relates to the technical field of floating type offshore photovoltaic structures, in particular to a barrel type anchoring foundation of a floating type offshore photovoltaic structure and an installation method of the barrel type anchoring foundation. The multiple auxiliary suction barrels are arranged around a traditional single main suction barrel, the main suction barrel and the multiple auxiliary suction barrels are rigidly connected through the rails, and therefore the overall bearing performance of the foundation is improved. Damping pieces are arranged on the outer wall faces of the main suction barrel and the auxiliary suction barrel, energy brought by wind wave flow loads and earthquake loads can be effectively dissipated, and the overall anti-seismic performance of the foundation is improved. The main suction bucket and the auxiliary suction buckets are connected through the rails, the buckling resistance of the anchoring foundation can be improved, and therefore the overall bearing performance of the anchoring foundation is improved. According to the scheme, the problem that a traditional anchoring foundation is insufficient in performance can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of floating offshore photovoltaic structures, and in particular to a barrel-type anchoring foundation of a floating offshore photovoltaic structure and an installation method thereof. Background Art

[0002] In recent years, offshore photovoltaics have flourished due to its advantages such as not occupying soil resources, high power generation efficiency, and easy transmission of electricity to the eastern coast. Among them, floating foundations are suitable for working conditions with greater water depths. Suction buckets are the basis for anchoring offshore floating structures and have been widely used in the construction of deep-sea oil and gas extraction platforms and deep-water SPAR platforms.

[0003] The use of a shared anchor foundation is the best solution to reduce costs and increase efficiency in building floating offshore photovoltaic fields. However, the design difficulty of a shared suction bucket anchor foundation is significantly higher than that of a traditional single-line mooring anchor foundation. There are two main reasons: First, the shared offshore photovoltaic field is large-scale, and the upper structure is subject to the loads of wind, waves, and currents. The shared suction bucket foundation bears the cyclic loads transmitted by multiple anchor chains from all directions, which puts higher requirements on the bearing performance of the anchor foundation; second, multiple floating offshore photovoltaic platforms are interconnected by shared anchors. The failure of a single anchor foundation will lead to a redistribution of the load, which may cause the overall failure of the floating offshore photovoltaic platform. Therefore, there are higher requirements for the service safety of a single anchor foundation. Therefore, there is an urgent need to provide a barrel-type anchor foundation for a floating offshore photovoltaic structure and an installation method thereof to solve the problem of insufficient performance of traditional anchor foundations. Summary of the invention

[0004] One or more embodiments of the present invention describe a barrel-type anchoring foundation for a floating offshore photovoltaic structure and an installation method thereof, which can solve the problem of insufficient performance of traditional anchoring foundations.

[0005] In a first aspect, the present invention provides a barrel-type anchoring foundation for a floating offshore photovoltaic structure according to an embodiment of the present invention, comprising:

[0006] The main suction bucket is set on the mud surface of the seabed;

[0007] Multiple auxiliary suction buckets are set on the mud surface of the seabed;

[0008] A plurality of tracks, each of which is fixed between the side wall of the main suction bucket and the side wall of each of the auxiliary suction buckets, and the auxiliary suction buckets are evenly arranged on the outer circumference of the main suction bucket;

[0009] The shock absorbing member is arranged on the outer wall surface of the main suction bucket and each of the auxiliary suction buckets.

[0010] According to the above embodiment, the main suction bucket includes a first skirt board, a first top cover, a first lifting ear, a first anchor eye and a first negative pressure hole, the first top cover is arranged above the first skirt board, the first lifting ear is arranged on both sides of the first skirt board, the first anchor eye is arranged on the outside of the first skirt board, and the first negative pressure hole is arranged above the first top cover.

[0011] According to the above embodiment, the auxiliary suction bucket includes a second skirt plate, a second top cover, a second lifting ear, a second anchor eye and a second negative pressure hole, the second top cover is arranged above the second skirt plate, the second lifting ear is arranged on both sides of the auxiliary suction bucket, the second anchor eye is arranged on the outside of the second skirt plate, and the second negative pressure hole is arranged above the second top cover;

[0012] The auxiliary suction barrel is pumped or injected with water through the second negative pressure hole, so that the barrel-type anchor foundation can be leveled.

[0013] According to the above embodiment, each of the rails includes a fixed section and an insertion section, the fixed section is arranged on the outer side of the first skirt board, the insertion section is arranged on the outer side of the second skirt board, and the insertion section is fixed to the fixed section by a latch.

[0014] According to the above embodiment, a plurality of the fixing segments are welded to the first skirt plate at intervals of 120°.

[0015] According to the above embodiment, the length of the first skirt panel does not exceed 10m, the outer diameter length of the main suction bucket does not exceed 10m, the outer diameter length of each of the auxiliary suction buckets does not exceed 2m, the thickness of the first skirt panel and the second skirt panel does not exceed 0.02m, the thickness of the first top cover does not exceed 0.02m, the thickness of the second top cover does not exceed 0.02m, the thickness of the shock absorber does not exceed 0.2m, the length of the fixed section does not exceed 0.7m, the width of the fixed section does not exceed 0.4m, the length of the insertion section does not exceed 0.4m, and the width of the insertion section does not exceed 0.2m.

[0016] According to the above embodiment, the rail is made of corrosion-resistant steel material.

[0017] According to the above embodiment, the shock absorbing member is made of rubber material.

[0018] In a second aspect, this specification provides an embodiment of a method for installing a barrel-type anchor foundation of a floating offshore photovoltaic structure, which is applied to the barrel-type anchor foundation described in the above embodiment, and the method comprises:

[0019] Using an offshore jack-up platform to connect the first lifting lug to sink the main suction bucket, so that the main suction bucket is sunk to the mud surface of the seabed;

[0020] Pumping water outwards using the first negative pressure hole to put the interior of the main suction bucket in a negative pressure state;

[0021] The plurality of auxiliary suction barrels are respectively sunk by connecting the second lifting lug with the offshore jack-up platform, and the penetration direction and angle of the auxiliary suction barrels are adjusted, and the insertion section is sunk downward along the fixed section, so that the plurality of auxiliary suction barrels are sunk to the seabed mud surface by their own weight;

[0022] The second negative pressure hole is used to pump water outward, and the insertion section is sunk downward along the fixed section to make the interior of the auxiliary suction bucket in a negative pressure state, and the latch is inserted into the insertion section and the fixed section to fix the main suction bucket and the auxiliary suction bucket.

[0023] According to the above implementation method, when the barrel-type anchor foundation is tilted, the second negative pressure hole is used to pump water or inject water into the auxiliary suction barrel to level the barrel-type anchor foundation.

[0024] According to an embodiment of the present invention, a barrel-type anchor foundation and installation method of a floating offshore photovoltaic structure are provided. By arranging multiple auxiliary suction barrels around a traditional single main suction barrel, and using rails to rigidly connect the main suction barrel and the multiple auxiliary suction barrels, the overall bearing capacity of the foundation is improved. Among them, shock-absorbing parts are arranged on the outer wall surfaces of the main suction barrel and the auxiliary suction barrel, which can effectively dissipate the energy brought by wind, wave, current loads and earthquake loads, and improve the overall seismic performance of the foundation; the main suction barrel and the multiple auxiliary suction barrels are connected by rails, which can improve the anti-buckling ability of the anchor foundation, thereby improving the overall bearing capacity of the anchor foundation. The solution of the present invention can solve the problem of insufficient performance of traditional anchor foundations. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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.

[0026] Figure 1 A schematic structural diagram of a barrel-type anchoring foundation of a floating offshore photovoltaic structure according to an embodiment is shown;

[0027] Figure 2 Shows Figure 1 A partial enlarged view of the structure of a barrel-type anchor foundation of a floating offshore photovoltaic structure is shown;

[0028] Figure 3A front view of a barrel-type anchoring foundation of a floating offshore photovoltaic structure according to one embodiment is shown;

[0029] Figure 4 Shows Figure 3 A schematic diagram of a track structure of a barrel-type anchoring foundation of a floating offshore photovoltaic structure is shown;

[0030] Figure 5 A 3D view of a barrel-type anchoring foundation of a floating offshore photovoltaic structure according to one embodiment is shown;

[0031] Figure 6 A schematic diagram of an in-situ service of a barrel-type anchoring foundation of a floating offshore photovoltaic structure according to an embodiment is shown;

[0032] Figure 7 Shows Figure 1 A schematic diagram of one size of the suction bucket shown;

[0033] Figure 8 Shows Figure 1 A schematic diagram of one size of the track shown;

[0034] Fig. 9 Shows Figure 5 A schematic diagram of the dimensions of a barrel-type anchoring foundation of a floating offshore photovoltaic structure is shown;

[0035] Fig.10 It shows the improvement of the uniaxial torque bearing capacity of the bucket anchor foundation compared with the traditional suction bucket foundation;

[0036] Fig.11 The displacement cloud diagram of the bucket anchor foundation and the traditional suction bucket foundation under torque load when they are destroyed is shown.

[0037] Reference numerals:

[0038] 1- Main suction bucket;

[0039] 11- first skirt board;

[0040] 12- first cover;

[0041] 13- first lifting lug;

[0042] 14-First anchor eye;

[0043] 15- first negative pressure hole;

[0044] 2-Auxiliary suction bucket;

[0045] 21- second skirt board;

[0046] 22- second top cover;

[0047] 23- second lifting lug;

[0048] 24-Second anchor eye;

[0049] 25- second negative pressure hole;

[0050] 3-track;

[0051] 31-fixed segment;

[0052] 32-insertion segment;

[0053] 33- latch;

[0054] 4-Shock absorbers. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions 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, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0056] Figure 1 A schematic structural diagram of a barrel-type anchoring foundation of a floating offshore photovoltaic structure according to an embodiment is shown; Figure 2 Shows Figure 1 A partial enlarged view of the structure of a barrel-type anchor foundation for a floating offshore photovoltaic structure is shown. Figure 1 and Figure 2 The barrel-type anchoring foundation of the floating offshore photovoltaic structure includes:

[0057] The main suction barrel 1 is arranged on the mud surface of the seabed;

[0058] A plurality of auxiliary suction barrels 2 are arranged on the mud surface of the seabed;

[0059] A plurality of tracks 3, each track 3 is fixed between the side wall of the main suction bucket 1 and the side wall of each auxiliary suction bucket 2, and the auxiliary suction buckets 2 are evenly arranged on the outer periphery of the main suction bucket 1;

[0060] The shock absorbing member 4 is arranged on the outer wall surface of the main suction bucket 1 and each auxiliary suction bucket 2 .

[0061] In this embodiment, multiple auxiliary suction barrels 2 are added around the traditional main suction barrel 1, and the main suction barrel 1 and the multiple auxiliary suction barrels 2 are rigidly connected through the track 3, so as to improve the overall bearing performance of the foundation. Among them, the shock absorbing parts 4 are arranged on the outer walls of the main suction barrel 1 and the auxiliary suction barrel 2, which can effectively dissipate the energy brought by the wind wave flow load and the earthquake load, and improve the overall seismic performance of the foundation; the main suction barrel 1 and the multiple auxiliary suction barrels 2 are connected by the track 3, which can improve the anti-buckling ability of the anchor foundation, thereby improving the overall bearing performance of the anchor foundation.

[0062] Moreover, the barrel-type anchor foundation of the floating offshore photovoltaic structure is simple in structure and easy to install, and the structure rigidly connects the main suction barrel 1 and the auxiliary suction barrel 2 through the track 3 to form the foundation as a whole. The upper structure transfers the load generated by the wind and wave flow to the foundation as a whole composed of the main suction barrel 1 and the three auxiliary suction barrels 2, which has higher bearing capacity than the anchor foundation of the traditional floating photovoltaic structure.

[0063] It should be noted that Figure 1 There are three auxiliary suction buckets 2 and three rails 3 shown, which cannot be understood as a specific limitation on “plurality”.

[0064] In addition, the anchor foundation of the floating photovoltaic structure of the embodiment of the present invention can be transported by barge to the site for installation one by one. Compared with the traditional large-diameter suction buckets, the four suction buckets of the anchor foundation in the present invention are relatively small in size, which reduces the manufacturing and transportation costs; the track 3 can simplify the installation and disassembly process of the auxiliary suction bucket 2, while reducing the construction difficulty and installation cost, and the disassembly of the auxiliary suction bucket 2 will not damage the foundation of the main suction bucket 1, which is convenient for the recovery and maintenance of the suction bucket. This effectively reduces the construction cost and installation cost of the foundation and improves the cost performance of the foundation.

[0065] like Figure 5 to Figure 6 As shown, in some embodiments, the main suction bucket 1 can be connected to the photovoltaic module through an anchor line, and the auxiliary suction bucket 2 can be connected to the wind turbine through an anchor line, thereby helping to achieve wind-solar complementarity.

[0066] See also Figure 3 to Figure 4 In one embodiment of the present invention, the main suction bucket 1 includes a first skirt board 11, a first top cover 12, a first lifting ear 13, a first anchor eye 14 and a first negative pressure hole 15. The first top cover 12 is arranged above the first skirt board 11, the first lifting ear 13 is arranged on both sides of the first skirt board 11, the first anchor eye 14 is arranged on the outer side of the first skirt board 11, and the first negative pressure hole 15 is arranged above the first top cover 12.

[0067] In one embodiment of the present invention, the auxiliary suction bucket 2 includes a second skirt board 21, a second top cover 22, a second lifting ear 23, a second anchor eye 24 and a second negative pressure hole 25, the second top cover 22 is arranged above the second skirt board 21, the second lifting ear 23 is arranged on both sides of the auxiliary suction bucket 2, the second anchor eye 24 is arranged outside the second skirt board 21, and the second negative pressure hole 25 is arranged above the second top cover 22;

[0068] The auxiliary suction bucket 2 is pumped or injected with water through the second negative pressure hole 25, so that the bucket-type anchor foundation can be leveled.

[0069] In this embodiment, the shock absorber 4 and the fixed section 31 are connected to the outside of the first skirt board 11, and the shock absorber 4 and the insertion section 32 are connected to the outside of the second skirt board 21. The fixed section 31 and the insertion section 32 are riveted together by a latch 33. By adopting the above structure, the main suction bucket 1, the auxiliary suction bucket 2, the track 3 and the shock absorber 4 are combined into a whole, so that the main suction bucket 1 and the auxiliary suction bucket 2 jointly bear the upper wind wave flow load, thereby significantly improving the overall bearing performance of the foundation without excessively increasing the size of the main suction bucket 1;

[0070] The first skirt plate 11 is connected to the shock absorber 4 on the outside, and is connected to a group of fixed sections 31 every 120°, with three groups welded in total. The second skirt plate 21 is connected to the shock absorber 4 on the outside, and each second skirt plate 21 is connected to the insertion section 32 on the outside. The above connection ensures reliable connection between the main suction bucket 1, the fixed section 31 and the shock absorber 4. The above connection ensures reliable connection between the auxiliary suction bucket 2, the insertion section 32 and the shock absorber 4.

[0071] The fixed section 31 and the insertion section 32 are connected by a latch 33 , which ensures a reliable connection between the fixed section 31 and the insertion section 32 , thereby ensuring a reliable connection between the main suction bucket 1 and the auxiliary suction bucket 2 .

[0072] In this embodiment, the traditional suction anchor will tilt during service. The barrel-type anchor foundation in the embodiment of the present invention can achieve leveling of the entire anchor foundation by negative pressure pumping or water injection of the three auxiliary suction barrels 2, thereby ensuring the service safety of the barrel-type anchor foundation.

[0073] In one embodiment of the present invention, each rail 3 includes a fixed section 31 and an insertion section 32 , the fixed section 31 is arranged on the outer side of the first skirt board 11 , the insertion section 32 is arranged on the outer side of the second skirt board 21 , and the insertion section 32 is fixed to the fixed section 31 by a latch 33 .

[0074] In this embodiment, when installing a traditional suction anchor, excessive suction may cause the barrel wall to buckle, resulting in installation failure. The track 3 in the present invention is equivalent to adding ribs to the suction barrel, thereby improving the ability to resist buckling during suction penetration.

[0075] like Fig.10 As shown, the curves showing the degree of improvement of the uniaxial torque bearing capacity of the bucket anchor foundation in homogeneous soil and heterogeneous soil compared with the traditional suction bucket foundation. Fig.11 The displacement failure cloud diagrams of bucket anchor foundation and traditional suction bucket foundation under torque load in homogeneous soil and heterogeneous soil at different depth-to-width ratios d / D are shown, where d is the foundation burial depth and D is the outer diameter of the main suction bucket 1.

[0076] In homogeneous soil and inhomogeneous soil, when the traditional suction bucket foundation is damaged, no soil is observed to be mobilized outside the skirt, so only the friction between the skirt and the soil contributes to the torsional bearing capacity when the torque load is applied. When the bucket anchor foundation is damaged, the soil failure mode is wedge sliding failure outside the skirt. As d / D increases from 0.05 to 1, the wedge sliding failure is fully developed. When d / D≤0.1, the soil shear mode of the bucket anchor foundation under torque load is "skirt-soil" shear, and the soil failure mode is local failure. As the burial depth continues to increase, the soil shear mode of the bucket anchor foundation under torque load gradually develops into "soil-soil" shear, and the soil failure mode gradually develops into global failure. Especially when d / D=1, the equivalent diameter of the bucket anchor foundation increases significantly, and the torsional resistance is close to that of the traditional suction bucket foundation with a larger diameter. Therefore, the bucket anchor foundation has a better torsional bearing performance.

[0077] In one embodiment of the present invention, a plurality of fixing sections 31 are welded to the first skirt plate 11 at intervals of 120°.

[0078] Combine the following Figures 7 to 9 The relevant dimensions of the above-mentioned components are introduced.

[0079] exist Figures 7 to 9 Among the dimensions that appear, D represents the outer diameter of the main suction bucket 1, d represents the outer diameter of the auxiliary suction bucket 2, l represents the length of the first skirt board 11 and the second skirt board 21, s represents the thickness of the shock absorber 4, h represents the thickness of the first top cover 12, b represents the length of the fixed section 31, a represents the width of the fixed section 31, n represents the length of the insertion section 32, and m represents the width of the insertion section 32.

[0080] In one embodiment of the present invention, the length of the first skirt board 11 does not exceed 10m, the outer diameter length of the main suction bucket 1 does not exceed 10m, the outer diameter length of each auxiliary suction bucket 2 does not exceed 2m, the thickness of the first skirt board 11 and the second skirt board 21 does not exceed 0.02m, the thickness of the first top cover 12 does not exceed 0.02m, the thickness of the second top cover 22 does not exceed 0.02m, the thickness of the shock absorber 4 does not exceed 0.2m, the length of the fixed section 31 does not exceed 0.7m, the width of the fixed section 31 does not exceed 0.4m, the length of the insertion section 32 does not exceed 0.4m, and the width of the insertion section 32 does not exceed 0.2m.

[0081] In this embodiment, the length l of the first skirt board 11 and the second skirt board 21 is increased to stimulate the bearing capacity of deeper soil, and the outer diameter D of the main suction barrel 1 and the outer diameter d of the auxiliary suction barrel 2 are increased to increase the volume of the soil plug inside the barrel body, so as to call on a larger range of surrounding soil, thereby improving the bearing capacity.

[0082] In one embodiment of the present invention, the rail 3 is made of corrosion-resistant steel material.

[0083] In this embodiment, the rail 3 is made of corrosion-resistant steel material to effectively avoid corrosion from seawater, thereby improving the service performance of the barrel anchor foundation.

[0084] In one embodiment of the present invention, the shock absorbing member 4 is made of rubber material.

[0085] In this embodiment, the shock absorbing member 4 is made of rubber material, which can dissipate the wind, wave and current loads and earthquake loads to a certain extent, reduce the resonance of the system, and improve the overall seismic performance of the barrel anchor foundation.

[0086] In addition, an embodiment of the present invention further provides a barrel-type anchoring installation method for a floating offshore photovoltaic structure, which is applied to the barrel-type anchoring foundation mentioned in the above embodiment. The method may specifically include:

[0087] The main suction barrel 1 is sunk by connecting the first lifting lug 13 with the offshore jack-up platform, so that the main suction barrel 1 is sunk to the mud surface of the seabed;

[0088] The first negative pressure hole 15 is used to pump water outwards, so that the interior of the main suction bucket 1 is in a negative pressure state;

[0089] Use the offshore jack-up platform to connect the second lifting lug 23 to sink multiple auxiliary suction barrels 2 respectively, and adjust the penetration direction and angle of the auxiliary suction barrels, and sink the insertion section 32 downward along the fixed section 31, so that the multiple auxiliary suction barrels 2 are sunk to the seabed mud surface by their own weight;

[0090] The second negative pressure hole 25 is used to pump water outward, and the insertion section 32 is sunk downward along the fixing section 31 to make the inside of the auxiliary suction bucket 2 in a negative pressure state, and the latch 33 is inserted into the insertion section 32 and the fixing section 31 to fix the main suction bucket 1 and the auxiliary suction bucket 2.

[0091] In one embodiment of the present invention, when the barrel-type anchor foundation is tilted, the second negative pressure hole 25 is used to pump water or inject water into the auxiliary suction barrel 2 to level the barrel-type anchor foundation.

[0092] It can be understood that the installation method of the barrel-type anchor foundation of the floating offshore photovoltaic structure provided in the embodiment of the present invention and the barrel-type anchor foundation of the floating offshore photovoltaic structure provided in the above-mentioned embodiment are based on the same inventive concept, and therefore the two have the same beneficial effects. The beneficial effects of the installation method of the barrel-type anchor foundation of the floating offshore photovoltaic structure will not be repeated here.

[0093] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the statement "comprise one..." do not exclude the existence of other identical factors in the process, method, article or equipment including the elements.

[0094] Finally, it should be noted that the above is only a preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A barrel-type anchoring foundation for a floating offshore photovoltaic structure, characterized in that: include: The main suction bucket is set on the mud surface of the seabed; Multiple auxiliary suction buckets are set on the mud surface of the seabed; A plurality of tracks, each of which is fixed between the side wall of the main suction bucket and the side wall of each of the auxiliary suction buckets, and the auxiliary suction buckets are evenly arranged on the outer circumference of the main suction bucket; The shock absorbing member is arranged on the outer wall surface of the main suction bucket and each of the auxiliary suction buckets.

2. The barrel type anchor foundation according to claim 1, characterized in that: The main suction bucket includes a first skirt board, a first top cover, a first lifting ear, a first anchor eye and a first negative pressure hole. The first top cover is arranged above the first skirt board, the first lifting ear is arranged on both sides of the first skirt board, the first anchor eye is arranged on the outer side of the first skirt board, and the first negative pressure hole is arranged above the first top cover.

3. The barrel type anchor foundation according to claim 2, characterized in that: The auxiliary suction bucket comprises a second skirt plate, a second top cover, a second lifting ear, a second anchor eye and a second negative pressure hole, wherein the second top cover is arranged above the second skirt plate, the second lifting ear is arranged on both sides of the auxiliary suction bucket, the second anchor eye is arranged outside the second skirt plate, and the second negative pressure hole is arranged above the second top cover; The auxiliary suction barrel is pumped or injected with water through the second negative pressure hole, so that the barrel-type anchor foundation can be leveled.

4. The barrel type anchor foundation according to claim 3, characterized in that: Each of the rails comprises a fixed section and an insertion section, wherein the fixed section is arranged on the outer side of the first skirt board, and the insertion section is arranged on the outer side of the second skirt board, and the insertion section is fixed to the fixed section by a latch.

5. The barrel type anchor foundation according to claim 4, characterized in that: The first skirt plate is welded with a plurality of the fixing segments at intervals of 120°.

6. The barrel type anchor foundation according to claim 5, characterized in that: The length of the first skirt panel shall not exceed 10m, the outer diameter length of the main suction barrel shall not exceed 10m, the outer diameter length of each auxiliary suction barrel shall not exceed 2m, the thickness of the first skirt panel and the second skirt panel shall not exceed 0.02m, the thickness of the first top cover shall not exceed 0.02m, the thickness of the second top cover shall not exceed 0.02m, the thickness of the shock absorber shall not exceed 0.2m, the length of the fixed section shall not exceed 0.7m, the width of the fixed section shall not exceed 0.4m, the length of the insertion section shall not exceed 0.4m, and the width of the insertion section shall not exceed 0.2m.

7. The barrel type anchor foundation according to any one of claims 4 to 6, characterized in that: The rail is made of corrosion-resistant steel material.

8. The barrel type anchor foundation according to any one of claims 4 to 6, characterized in that: The shock absorbing component is made of rubber material.

9. A barrel-type anchoring installation method for a floating offshore photovoltaic structure, characterized in that: Applied to the barrel anchor foundation according to any one of claims 4 to 8, the method comprises: Using an offshore jack-up platform to connect the first lifting lug to sink the main suction bucket, so that the main suction bucket is sunk to the mud surface of the seabed; Pumping water outwards using the first negative pressure hole to put the interior of the main suction bucket in a negative pressure state; The plurality of auxiliary suction barrels are respectively sunk by connecting the second lifting lug with the offshore jack-up platform, and the penetration direction and angle of the auxiliary suction barrels are adjusted, and the insertion section is sunk downward along the fixed section, so that the plurality of auxiliary suction barrels are sunk to the seabed mud surface by their own weight; The second negative pressure hole is used to pump water outward, and the insertion section is sunk downward along the fixed section to make the interior of the auxiliary suction bucket in a negative pressure state, and the latch is inserted into the insertion section and the fixed section to fix the main suction bucket and the auxiliary suction bucket.

10. The barrel type anchoring installation method according to claim 9, characterized in that: The method further comprises: When the barrel-type anchor foundation is tilted, the second negative pressure hole is used to pump water or inject water into the auxiliary suction barrel to level the barrel-type anchor foundation.

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