Seabed data center pile foundation anti-scouring device and building and assembling method

Abstract

The invention discloses an anti-scouring device for a seabed data center pile foundation and a building and assembling method, and belongs to the technical field of marine foundation protection. The device comprises a fixing structure, an inclination angle structure used for controlling the inclination angle and the inclination direction, a rotating structure used for controlling the rotating angle and an anti-scour structure, the tidal current direction and the seabed surface scouring and silting condition are detected in real time through a water flow sensor and a terrain scanner, and the inclination angle and the rotating angle of the device are dynamically adjusted through a control system; the scouring and erosion effects of ocean current on the pile foundation are reduced; the construction and assembly method comprises the steps of an anti-scour device design stage, block prefabrication, assembly, first-time qualification inspection, pile foundation construction, second-time qualification inspection, anti-scour device installation and seabed data center installation. The performance of the device under the simulated marine environment condition is kept consistent with that in the actual environment, the safety and reliability of marine pile foundation and seabed data are improved, and long-term stable operation is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of marine foundation protection, and in particular to an anti-scour device for a pile foundation of a submarine data center and a construction and assembly method thereof. Background Art

[0002] Data cubes are usually placed on both sides of the submarine corridor to form a corridor-type submarine data center, which utilizes the natural cooling effect of seawater, not only significantly improving the utilization efficiency of marine resources, but also greatly reducing the construction and operation costs of data centers. However, with the introduction of submarine data centers, their huge volume has an unignorable impact on the surrounding marine environment, especially the change of flow field, which leads to a sharp change in local flow velocity and the formation of a complex vortex system.

[0003] Specifically, the water blocking effect of the data center and the pile foundation forces part of the water flow to change direction, flowing downward along the data center and the pile foundation, and generating strong eddies when it intersects with the water flow on the seabed. This eddy phenomenon poses a severe challenge to the pile foundation, especially in the hollow structure area of ​​the data center close to the seabed surface, where the water flow velocity increases sharply, aggravating the intensity of the eddy current, causing a large amount of seabed sediment in this area to be washed away, gradually forming scouring pits. This not only weakens the support of the seabed for the pile foundation, but also increases the risk of the pile foundation being exposed, thereby threatening the stability of the entire marine engineering structure and adversely affecting its inherent cycle and fatigue life.

[0004] Faced with this technical difficulty, traditional seabed scour protection measures, such as underwater riprap filtration layer, gravity sand ballasted bed and grouting reinforcement, can alleviate the scour problem to a certain extent. However, they are limited by the disadvantages of large material consumption, long construction period, high cost and easy damage to the pile foundation anti-corrosion layer. The protection effect is often difficult to achieve the ideal state, and it is difficult to completely avoid the occurrence of secondary scour.

[0005] Therefore, developing a new anti-scour device that can effectively resist scour erosion while ensuring structural stability and durability has become a technical problem that needs to be urgently solved in the field of offshore wind power engineering. Summary of the invention

[0006] In view of the deficiencies mentioned in the above technical background, an object of the present invention is to provide an anti-scour device for pile foundation of a submarine data center and a construction and assembly method.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A subsea data center pile foundation anti-scour device is provided on the pile foundation, wherein the pile foundation is provided with an integrally cast support beam near the seabed surface, and comprises a fixed structure, an inclination structure, a rotation structure and an anti-scour structure, which are radially connected in sequence from the outer wall of the pile foundation, wherein the inclination structure and the rotation structure are both electrically connected to an external control system, and the control system is used for automatic control of the anti-scour device;

[0009] The fixing structure is a circular ring structure, a groove is provided on its lower surface, the groove is located on the support beam, a first lifting ear is provided on the upper surface of the fixing structure, and a tooth groove is provided on the outer side of the fixing structure;

[0010] The inclination structure is arranged around the outer periphery of the fixed structure, and is used to control the inclination angle and inclination direction of the anti-scour device. A gear is provided on the inner side of the inclination structure, and is used to combine with the tooth groove to control the anti-scour device to move along the axis direction of the pile foundation.

[0011] The rotating structure comprises a rotating assembly and a casing, wherein the rotating assembly has an inner ring and an outer ring that rotate relatively, the inner ring of the rotating assembly is sleeved outside the inclination structure, the outer ring of the rotating assembly is sleeved with the casing, a plurality of support frames are evenly distributed in the circumferential direction on the bottom surface of the casing, a second lifting ear is provided at the free end of the support frame, and a terrain scanner is provided on the lower surface of the support frame;

[0012] The anti-collision structure includes an anti-collision plate and a protective cover, wherein the anti-collision plate is circumferentially arranged around the outer circumference of the casing and installed on the upper surfaces of a plurality of the support frames, the protective cover is sleeved on the outer side of the anti-collision plate, and a water flow sensor is provided on the outer wall of the protective cover;

[0013] The terrain scanner and the water flow sensor are both electrically connected to the control system.

[0014] As a preferred technical solution of the present invention, three or more layers of hydraulic rods are provided on the outer side of the angled structure, the hydraulic rods are rigidly connected to the inner ring, and the upper and lower surfaces of the angled structure are provided with elastic watertight rubber.

[0015] As a preferred technical solution of the present invention, the rotating component is a bearing structure.

[0016] As a preferred technical solution of the present invention, the anti-collision plate is composed of two semicircular rings, and each of the two joints of the semicircular ring is respectively provided with a clamping strip and a clamping groove, and the clamping strips and the clamping grooves of the two semicircular rings are plugged into each other to form a complete circular anti-collision plate, and a plurality of screw holes are provided on the lower surface of the anti-collision plate, and the anti-collision plate is installed on the upper surface of a plurality of the support frames by passing bolts through the screw holes.

[0017] Furthermore, the two semicircular rings and the semicircular ring and the protective cover are fixed by connecting pieces, each of which includes two fastening heads and a connecting rod, the fastening heads are arranged on the lower surfaces of the semicircular ring and the protective cover, and the connecting rod is used to fix two adjacent fastening heads.

[0018] Furthermore, a connecting frame insertion hole is provided on the upper surface of one of the semicircular rings for installing a plurality of connecting frames, and the plurality of connecting frames are connected by latches, and a bionic water plant installation hole is provided on the upper surface of the connecting frame for installing bionic water plants.

[0019] A method for constructing and assembling a pile foundation anti-scour device for a submarine data center according to the present invention comprises the following steps:

[0020] S1. Anti-scour device design stage: obtain the water flow velocity, sediment characteristics and wave height data of the sea area, calculate the impact of the water flow on the anti-scour device, and then determine its basic size, shape and material;

[0021] S2. Prefabricated anti-scour device in blocks: according to the design requirements, the size, shape and quantity of each prefabricated block are determined. The prefabricated block includes the fixed structure, the inclination structure, the rotation structure and the anti-scour structure. The prefabricated blocks are produced in an assembly line manner, and the prefabricated blocks are transported to the assembly area by a conveying device for assembly process;

[0022] S3, assembling the anti-scour device: the assembly area is provided with a pile foundation model, the pile foundation model is provided with the support beam for temporarily fixing the fixed structure, the installation position of each prefabricated block is determined by a computer-aided positioning system, the prefabricated blocks are grabbed by a mechanical arm according to a set assembly sequence and installed on the pile foundation model to assemble the anti-scour device;

[0023] S4, first qualification inspection: after the assembly is completed, the first qualification inspection of the anti-scour device is carried out according to the design requirements. After the inspection is completed, the first lifting lug and the second lifting lug are lifted by a mechanical lifting hook, so that the entire anti-scour device is lifted onto a transport ship, and then transported to the installation sea area by the transport ship;

[0024] S5. Pile foundation construction: The pile foundation is constructed by concrete pouring technology at a predetermined location in the sea area. During pouring, the support beam is integrally poured around the outer periphery of the pile foundation. The distance between the support beam and the seabed surface is determined according to the design requirements. A cable channel is reserved in the center of the pile foundation.

[0025] S6. Second conformity test: Use a hoisting device to hoist the assembled anti-scour device onto the pile foundation in the installation sequence, use the anti-scour device's own weight to sink it above the support beam, and temporarily fix the groove of the anti-scour device on the support beam to perform a second conformity test;

[0026] S7, installing the anti-scour device: after the second qualification test is passed, the anti-scour device is permanently fixed on the support beam, and a cable is laid in the cable channel, one end of the cable is connected to the control system, and the other end is connected to the water flow sensor and the terrain description instrument, and the hoisting equipment is evacuated to prepare for the next installation of the anti-scour device;

[0027] S8. Installing the submarine data center: After completing the installation of the anti-scour device, the submarine data center is fixedly installed on top of the pile foundation, and the above steps S3 to S8 are repeated until all the anti-scour devices and the submarine data center are installed.

[0028] As a preferred technical solution of the present invention, the assembly sequence set in step S3 is to install from the center of the pile foundation model to the periphery, that is, starting from the fixed structure and expanding outward to the inclination structure, the rotating structure and the anti-collision structure in sequence.

[0029] As a preferred technical solution of the present invention, the qualification test in step S4 includes a sensitivity test of the water flow sensor, a structural strength test, a rotation sensitivity test of the rotating structure, and a tilt sensitivity test of the inclination structure.

[0030] As a preferred technical solution of the present invention, the lifting equipment in step S6 is equipped with 4 to 8 mooring cables electrically connected to the control system, and a grab hook is connected to the end of each mooring cable. Each grab hook is provided with a positioning device. The lifting equipment grabs the first lifting ear and the second lifting ear through the grab hook to lift the anti-scour device, and uses the positioning device to monitor the position data of each first lifting ear and each second lifting ear and feed it back to the control system, and the control system adjusts the length of the mooring cable according to the position data.

[0031] In summary, the beneficial effects of the present invention are:

[0032] 1. The anti-scour device for pile foundation of submarine data center of the present invention realizes the precise adjustment function of inclination angle, inclination direction and rotation angle of the anti-scour device by introducing inclination structure and rotation structure, and utilizes terrain scanner and water flow sensor to detect tide direction and seabed scouring and silting conditions in real time. The control system dynamically adjusts the orientation of the device according to the feedback results to adapt to the ever-changing marine environment, reduce the risk of secondary scouring, and precisely control the inclination and rotation angle of the device so that it can face different water flow conditions in the best posture, effectively guide the water flow, reduce the scouring and erosion of the pile foundation, and thus improve the protection effect.

[0033] Secondly, the control system can also adjust the orientation of the device according to the direction of the water flow, ensuring that the side with the bionic water grass always faces the water flow, thereby enhancing its anti-scouring function; since the anti-scouring device is assembled from independent prefabricated blocks such as a fixed structure, an inclination structure, a rotating structure, and an anti-scouring structure, it is easy to disassemble and replace. When the bionic water grass is damaged due to long-term water erosion, the corresponding prefabricated blocks can be easily replaced, extending the service life of the device and simplifying the installation and maintenance process. The design of the integrated bionic water grass and anti-scouring plate of the present invention allows the mud and sand in the water to fall smoothly on the anti-scouring plate after being blocked by the bionic water grass, and slide down along the surface at a certain angle to the direction of the water flow, reducing the accumulation of mud and sand on the device, while allowing the mud and sand to fall near the pile foundation, which helps to increase the protective effect of the pile foundation and improve the stability of the entire structure.

[0034] 2. The construction and assembly method of the pile foundation anti-scour device of the submarine data center of the present invention prefabricates the fixed structure, the inclination structure, the rotation structure and the independent prefabricated blocks of the anti-scour structure in the factory, which not only increases the synchronous working surface and shortens the construction time, but also ensures the construction progress and quality of the device, and greatly shortens the construction time. The anti-scour device is assembled on the pile foundation model, and the actual working environment is simulated for precise adjustment and testing to reduce errors and risks during on-site installation. After assembly, it is debugged and qualified again on the construction pile foundation to ensure that the performance of the anti-scour device under the simulated marine environment conditions is consistent with that in the actual environment, which is conducive to quality control and ensures that each link meets the design requirements. In addition, the computer-aided positioning system and the positioning device guidance on the mooring cable ensure the safety and accuracy of the assembly and hoisting process.

[0035] Secondly, the construction of pile foundations, the installation of anti-scour devices and the placement of submarine data centers can be carried out simultaneously, reducing waiting time and significantly improving the overall construction progress. Once the offshore pile foundation is poured and meets the strength requirements, the anti-scour device can be installed immediately, while the next group of pile foundations continue to be poured, forming a continuous and uninterrupted construction process and maximizing the use of construction resources. Key equipment such as lifting equipment and transport ships are no longer idle due to waiting, but are continuously involved in various construction links without waiting for work on other non-critical paths to be completed, thereby enhancing the flexibility of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a top view of an anti-scour device for pile foundation of a submarine data center according to an embodiment of the present invention;

[0037] Figure 2 This is a bottom view of an anti-scour device for pile foundation of a submarine data center according to an embodiment of the present invention;

[0038] Figure 3 yes Figure 1 AA section view;

[0039] Figure 4 is a schematic diagram of the upper surface of the anti-collision plate according to an embodiment of the present invention;

[0040] Figure 5 is a schematic diagram of the lower surface of the anti-collision plate according to an embodiment of the present invention;

[0041] Figure 6 is a schematic diagram of a connecting frame of the present invention;

[0042] Figure 7 It is a flow chart of a method for constructing and assembling a pile foundation anti-scour device for a submarine data center according to the present invention;

[0043] Among them: 1-anti-scouring device, 11-fixed structure, 111-groove, 112-tooth groove, 12-inclination structure, 121-gear, 122-hydraulic rod, 13-rotation structure, 131-rotation assembly, 1311-inner ring, 1312-outer ring, 132-casing, 133-support frame, 134-second lifting ear, 14-anti-scouring structure, 141-anti-scouring plate, 1411-semicircle ring, 1412-clip strip, 1413-clip groove, 1414-screw hole, 1415-bolt, 142-protective cover, 1421-water flow sensor, 15-connecting piece, 151-fastening head, 152-connecting rod, 16-connecting frame, 161-pin, 162-bionic water grass installation hole, 17-bionic water grass, 2-pile foundation, 21-support beam. DETAILED DESCRIPTION

[0044] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments given here are only used to illustrate and explain the present invention, and cannot be used to limit the present invention.

[0045] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also have other implementations and variations thereof. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0046] like Figures 1 to 6 As shown, an anti-scour device 1 of a pile foundation 2 of a submarine data center in this embodiment is arranged on the pile foundation 2. The pile foundation 2 is provided with an integrally cast support beam 21 near the seabed surface, including a fixed structure 11, an inclination structure 12, a rotation structure 13 and an anti-scour structure 14, which are radially connected in sequence from the outer wall of the pile foundation 2. The inclination structure 12 and the rotation structure 13 are electrically connected to an external control system (not shown in the figure), and the control system is used for automatic control of the anti-scour device 1; the integrated application of the control system greatly improves the convenience and response speed of operation, so that the anti-scour device 1 can quickly respond to changes in ocean currents, thereby reducing the need for manual operation;

[0047] The fixed structure 11 is a circular ring structure with an inner diameter slightly larger than the outer diameter of the pile foundation 2, and a groove 111 is provided on its lower surface. The groove 111 is located on the support beam 21 to ensure a stable connection between the anti-scour device 1 and the pile foundation 2. A first lifting lug (not shown) is provided on the upper surface of the fixed structure 11, and a tooth groove 112 is provided on the outer side of the fixed structure 11.

[0048] The inclination structure 12 is arranged around the outer periphery of the fixed structure 11, and is used to control the inclination angle and inclination direction of the anti-scour device 1. A gear 121 is provided on the inner side of the inclination structure 12, which is used to combine with the tooth groove 112 to control the anti-scour device 1 to move along the axial direction of the pile foundation 2; three layers of hydraulic rods 122 are provided on the outer side of the inclination structure 12, and the hydraulic rods 122 are rigidly connected to the rotating structure 13. Each layer has 8 hydraulic rods 122 evenly distributed along the circumference of the outer periphery of the fixed structure 11, and there are 24 hydraulic rods 122 in total. Each hydraulic rod 122 can independently adjust its extension length. By adjusting the length of these hydraulic rods 122, the device can be accurately adjusted at multiple angles, and the inclination angle and inclination direction of the entire anti-scour device 1 can be controlled to adapt to different current conditions and optimize its resistance to currents. The upper and lower surfaces of the inclination structure 12 are provided with elastic watertight rubber to provide a good sealing effect and effectively prevent liquid leakage;

[0049] The rotating structure 13 includes a rotating assembly 131 and a casing 132. The rotating assembly 131 adopts a ball bearing structure to ensure the flexibility and stability of rotation. The rotating assembly 131 has an inner ring 1311 and an outer ring 1312 that rotate relatively. The inner ring 1311 of the rotating assembly 131 is sleeved on the outside of the inclination structure 12, and the outer ring 1312 of the rotating assembly 131 is sleeved with the casing 132. The bottom surface of the casing 132 is evenly distributed with 8 support frames 133 in the circumferential direction. The free end of each support frame 133 is provided with a second lifting lug 134. The lower surface of the support frame 133 is provided with a terrain scanner (not shown in the figure) for real-time detection of scouring and silting conditions on the seabed surface. The rotating structure 13 is rigidly connected to the inclination structure 12 to control the rotation angle of the anti-scouring device 1. The rotating structure 13 can realize 2360° rotation of the anti-scouring device 1 around the pile foundation.

[0050] The anti-collision structure 14 includes an anti-collision plate 141 and a protective sleeve 142. The anti-collision plate 141 is arranged circumferentially around the outer circumference of the casing 132 and installed on the upper surface of 8 support frames 133. The protective sleeve 142 is sleeved on the outer side of the anti-collision plate 141. The anti-collision plate 141 is composed of two semi-circular rings 1411. The two joints of each semi-circular ring 1411 are respectively provided with a clamping strip 1412 and a clamping groove 1413. The clamping strips 1412 and the clamping grooves 1413 of the two semi-circular rings 1411 are plugged into each other to form a complete circular anti-collision plate 141. The lower surface of the anti-collision plate 141 is provided with 8 screw holes 1414. The anti-collision plate 141 is installed on the upper surface of the 8 support frames 133 by passing the screw holes 1414 through bolts 1415. The two semi-circular rings 1411 and the semi-circular rings 1411 and the protective sleeve 142 are fixed by connecting members 15. Each connecting member 15 includes two fastening heads 151 and a connecting rod 152. The fastening heads 151 are arranged on the lower surfaces of the semicircular ring 1411 and the protective cover 142. The connecting rod 152 is used to fix two adjacent fastening heads 151. The upper surface of one of the semicircular rings 1411 is provided with a connecting frame insertion hole (not shown in the figure) for installing a plurality of connecting frames 16. The plurality of connecting frames 16 are connected by a latch 161. The upper surface of the connecting frame 16 is provided with a bionic water grass 17 installation hole 162 for installing the bionic water grass 17 to further reduce the impact of water flow on the device; the use of an elastic rubber ring as the protective cover 142 helps to reduce the erosion of the water flow on the device and improve the durability of the device. The outer wall of the protective cover 142 is provided with a water flow sensor 1421 for real-time detection of the tidal current direction to provide data support for the automatic control system of the anti-scouring device 1;

[0051] The terrain scanner and water flow sensor 1421 are electrically connected to the control system and receive data from these sensors in real time. Based on the real-time acquired data, the control system adjusts the orientation of the anti-scour device 1 at any time to ensure that it maintains an inclination angle α of 5 to 10 degrees with the negative direction of the water flow, which helps the mud and sand to slide off the device and avoids excessive water flow velocity under the device, thereby reducing the scouring of the pile foundation 2.

[0052] In order to resist underwater corrosion and enhance the corrosion resistance and durability of the device, the entire anti-scour structure, except for the clear instructions and necessary requirements for structural strength, is made of acrylic or plastic plates with good weather resistance, chemical resistance and transparency, ensuring the long-term stable operation of the anti-scour device 1.

[0053] like Figure 7 As shown, a method for constructing and assembling an anti-scour device 1 of a pile foundation 2 of a submarine data center in this embodiment includes the following steps:

[0054] S1, anti-scour device 1 design stage: obtain the water flow velocity, sediment characteristics and wave height data of the sea area, calculate the impact of the water flow on the anti-scour device 1, and then determine its basic size, shape and material;

[0055] The main function of the anti-scour device 1 based on this embodiment is to prevent the scouring of the pile foundation 2 structure of the submarine data center by water flow. Therefore, it is necessary to obtain data such as the water flow velocity, sediment characteristics, and wave height of the sea area during the design stage, analyze the load of the anti-scour device 1 under different working conditions, including static load and dynamic load, and design the shape of the anti-scour device 1 according to the principles of fluid mechanics to ensure the stability of the structure under the impact of water flow, waves and sediment, and perform anti-slip and anti-overturning calculations; at the same time, according to the water flow conditions, calculate the influence of the flow velocity on the anti-scour device 1, and determine its basic size. In the size design, a certain safety factor should also be considered to cope with extreme weather or abnormal water flow conditions; secondly, according to the sea environment, the anti-scour device 1 selects corrosion-resistant and impact-resistant materials, such as concrete, steel or composite materials.

[0056] S2, prefabricated anti-scour device 1: according to the design requirements, the size, shape and quantity of each prefabricated block are determined. The prefabricated block includes a fixed structure 11, an angle structure 12, a rotating structure 13 and an anti-scour structure 14. The prefabricated blocks are produced in an assembly line manner, and the prefabricated prefabricated blocks are transported to the assembly area by a conveying device for assembly process;

[0057] The factory-prefabricated anti-scour device 1 is produced in blocks in a standardized and assembly-line manner within the factory, which significantly improves the construction efficiency and quality. It not only shortens the overall construction period, allowing the anti-scour device 1 to be put into use more quickly, but also effectively reduces errors and mistakes in the construction process through standardized operating procedures. In addition, by increasing the number of working surfaces for parallel operations, the time required for construction is further reduced, ensuring that the progress of the device construction and the final quality are effectively guaranteed.

[0058] S3, assembling the anti-scour device 1: a pile foundation model is provided in the assembly area, a support beam 21 is provided on the pile foundation model for temporarily fixing the fixed structure 11, the installation position of each prefabricated block is determined by a computer-aided positioning system, and the prefabricated blocks are grabbed by a mechanical arm according to a set assembly sequence and installed on the pile foundation model to assemble the anti-scour device 1;

[0059] Assembling on the pile foundation model can simulate the actual working environment and ensure that the anti-scour device 1 has been accurately adjusted and tested before actual installation, thereby reducing errors and risks during on-site installation. At the same time, because most of the assembly work has been completed in a controlled environment, a large amount of on-site workload and complexity are reduced.

[0060] S4, first qualification inspection: after the assembly is completed, the first qualification inspection of the anti-scour device 1 is carried out according to the design requirements. After the inspection is completed, the first lifting lug and the second lifting lug 134 are lifted by a mechanical lifting hook, so that the entire anti-scour device 1 is lifted onto the transport ship, and then transported to the installation sea area by the transport ship;

[0061] Because the hydrological conditions, seabed topography, soil characteristics, waves and tidal currents of various sea areas are different, the scouring and silting conditions of different sea areas have different requirements for the rotatable angle and tilt angle of the anti-scouring device 1. These factors jointly affect the scouring effect of water flow on the pile foundation, thereby determining the working conditions that the anti-scouring device 1 needs to adapt to. Therefore, the design requirements of the anti-scouring device 1 must be based on a detailed analysis and understanding of the scouring and silting conditions of a specific sea area, and then determine the most suitable configuration of the anti-scouring device 1, including its rotatable angle and tilt angle, to ensure that the anti-scouring device 1 can play the greatest protective role in various marine environments.

[0062] S5. Construction of pile foundation 2: Concrete pouring technology is used to construct pile foundation 2 at a predetermined position in the sea area. During pouring, support beam 21 is integrally poured around the outer periphery of pile foundation 2. The distance between support beam 21 and the seabed surface is determined according to design requirements. A cable channel is reserved in the center of pile foundation 2.

[0063] S6. Second conformity test: Use hoisting equipment to hoist the assembled anti-scour device 1 onto the pile foundation 2 in the installation sequence, use the deadweight of the anti-scour device 1 to sink it to the top of the support beam 21, and temporarily fix the groove 111 of the anti-scour device 1 on the support beam 21, and perform the second conformity test;

[0064] The second qualification test is conducted to ensure that the performance of the anti-scour device 1 under the simulated marine environment is consistent with that in the actual environment, verify the quality of its design and assembly, and ensure that it cooperates more accurately with the pile foundation 2. Through the second qualification test, the safety and reliability of the anti-scour device 1 are confirmed, ensuring that it can effectively resist the scour of the ocean current in long-term operation, protect the pile foundation 2, and promptly discover and solve problems that may not appear under simulated conditions, reduce the difficulty and cost of later maintenance, and reduce safety risks caused by device failure or insufficient performance.

[0065] S7, installing the anti-scour device 1: after the second qualification test is passed, the anti-scour device 1 is permanently fixed on the support beam 21, and the cable is laid in the cable channel, one end of the cable is connected to the control system, and the other end is connected to the water flow sensor 1421 and the terrain description instrument, and the hoisting equipment is evacuated to prepare for the next installation of the anti-scour device 1;

[0066] One end of the cable is connected to the control system, and the other end is connected to the water flow sensor 1421 and the terrain description instrument. It can monitor the water flow and terrain changes in the sea area for a long time, discover potential scouring problems in time, and take preventive maintenance measures to avoid structural damage caused by scouring. Through real-time monitoring data, it provides data support for the performance evaluation and maintenance of the anti-scouring device 1.

[0067] S8. Installing the submarine data center: After the anti-scour device 1 is installed, the submarine data center is fixedly installed on top of the pile foundation 2, and the above steps S3 to S8 are repeated until all the anti-scour devices 1 and the submarine data center are installed.

[0068] In some embodiments, the assembly sequence set in step S3 is to install from the center of the pile foundation model to the periphery, that is, starting from the fixed structure 11 and expanding outward to the inclination structure 12, the rotating structure 13 and the anti-collision structure 14 in sequence.

[0069] In some embodiments, the qualification test in step S4 includes a sensitivity test of the water flow sensor 1421 , a structural strength test, a rotation sensitivity test of the rotating structure 13 , and a tilt sensitivity test of the tilt structure 12 .

[0070] In some embodiments, the lifting equipment in step S6 is equipped with 4 to 8 mooring cables electrically connected to the control system, and a grab hook is connected to the end of each mooring cable. Each grab hook is provided with a positioning device. The lifting equipment grabs the first lifting ear and the second lifting ear 134 through the grab hook to lift the anti-scour device 1, and uses the positioning device to monitor the position data of each first lifting ear and each second lifting ear 134 and feed it back to the control system. The control system adjusts the length of the mooring cable according to the position data.

[0071] The electrical connection between the positioning device and the control system enables the entire lifting process to be automated. The control system can automatically adjust the length of the mooring cable according to the real-time feedback position data, ensuring that the anti-scour device 1 can be accurately aligned to the predetermined pile foundation 2 position during the lifting process, thereby reducing errors in human operation. Automated control reduces lifting time and improves construction efficiency, especially in a changeable marine environment. This efficiency improvement is particularly obvious. This lifting system can adapt to different installation environments and conditions, providing flexible solutions for various marine projects.

[0072] It should be understood that the above-mentioned embodiments are one or more embodiments of the present invention, and there are many other embodiments and variations thereof based on the present invention; the variations and modifications made by ordinary technicians in this industry through the present invention without making pioneering innovations all fall within the scope of protection of the present invention.

Claims

1. A subsea data center pile foundation anti-scour device, arranged on a pile foundation, wherein the pile foundation is provided with an integrally cast support beam near the seabed surface, characterized in that: It includes a fixed structure, an inclination structure, a rotation structure and an anti-scour structure, which are radially connected in sequence from the outer wall of the pile foundation, and the inclination structure and the rotation structure are both electrically connected to an external control system, and the control system is used for automatic control of the anti-scour device; The fixing structure is a circular ring structure, a groove is provided on its lower surface, the groove is located on the support beam, a first lifting ear is provided on the upper surface of the fixing structure, and a tooth groove is provided on the outer side of the fixing structure; The inclination structure is arranged around the outer periphery of the fixed structure, and is used to control the inclination angle and inclination direction of the anti-scour device. A gear is provided on the inner side of the inclination structure, and is used to combine with the tooth groove to control the anti-scour device to move along the axis direction of the pile foundation. The rotating structure comprises a rotating assembly and a casing, wherein the rotating assembly has an inner ring and an outer ring that rotate relatively, the inner ring of the rotating assembly is sleeved outside the inclination structure, the outer ring of the rotating assembly is sleeved with the casing, a plurality of support frames are evenly distributed in the circumferential direction on the bottom surface of the casing, a second lifting ear is provided at the free end of the support frame, and a terrain scanner is provided on the lower surface of the support frame; The anti-collision structure includes an anti-collision plate and a protective cover, wherein the anti-collision plate is circumferentially arranged around the outer circumference of the casing and installed on the upper surfaces of a plurality of the support frames, the protective cover is sleeved on the outer side of the anti-collision plate, and a water flow sensor is provided on the outer wall of the protective cover; The terrain scanner and the water flow sensor are both electrically connected to the control system.

2. The anti-scouring device for pile foundation of a submarine data center according to claim 1, characterized in that: The outer side of the angled structure is provided with three or more layers of hydraulic rods, the hydraulic rods are rigidly connected to the inner ring, and the upper surface and the lower surface of the angled structure are provided with elastic water-tight rubber.

3. The anti-scouring device for pile foundation of a submarine data center according to claim 1, characterized in that: The rotating component is a bearing structure.

4. The anti-scouring device for pile foundation of a submarine data center according to claim 1, characterized in that: The anti-collision plate is composed of two semicircular rings, and each of the two joints of the semicircular ring is respectively provided with a clamping strip and a clamping groove. The clamping strips and the clamping grooves of the two semicircular rings are plugged into each other to form a complete circular anti-collision plate. A plurality of screw holes are provided on the lower surface of the anti-collision plate, and the anti-collision plate is installed on the upper surfaces of a plurality of the support frames by passing bolts through the screw holes.

5. The anti-scouring device for pile foundation of a submarine data center according to claim 4, characterized in that: The two semicircular rings and the semicircular ring and the protective cover are fixed by connecting pieces, each of which includes two fastening heads and a connecting rod. The fastening heads are arranged on the lower surfaces of the semicircular ring and the protective cover, and the connecting rod is used to fix two adjacent fastening heads.

6. The anti-scouring device for pile foundation of a submarine data center according to claim 4, characterized in that: A connecting frame insertion hole is provided on the upper surface of one of the semicircular rings for installing a plurality of connecting frames, and the plurality of connecting frames are connected by latches. A bionic water plant installation hole is provided on the upper surface of the connecting frame for installing bionic water plants.

7. A method for constructing and assembling a pile foundation anti-scour device for a submarine data center according to any one of claims 1 to 6, characterized in that The following steps are involved: S1. Anti-scour device design stage: obtain the water flow velocity, sediment characteristics and wave height data of the sea area, calculate the impact of the water flow on the anti-scour device, and then determine its basic size, shape and material; S2. Prefabricated anti-scour device in blocks: according to the design requirements, the size, shape and quantity of each prefabricated block are determined. The prefabricated block includes the fixed structure, the inclination structure, the rotation structure and the anti-scour structure. The prefabricated blocks are produced in an assembly line manner, and the prefabricated blocks are transported to the assembly area by a conveying device for assembly process; S3, assembling the anti-scour device: the assembly area is provided with a pile foundation model, the pile foundation model is provided with the support beam for temporarily fixing the fixed structure, the installation position of each prefabricated block is determined by a computer-aided positioning system, the prefabricated blocks are grabbed by a mechanical arm according to a set assembly sequence and installed on the pile foundation model to assemble the anti-scour device; S4, first qualification inspection: after the assembly is completed, the first qualification inspection of the anti-scour device is carried out according to the design requirements. After the inspection is completed, the first lifting lug and the second lifting lug are lifted by a mechanical lifting hook, so that the entire anti-scour device is lifted onto a transport ship, and then transported to the installation sea area by the transport ship; S5. Pile foundation construction: The pile foundation is constructed by concrete pouring technology at a predetermined location in the sea area. During pouring, the support beam is integrally poured around the outer periphery of the pile foundation. The distance between the support beam and the seabed surface is determined according to the design requirements. A cable channel is reserved in the center of the pile foundation. S6. Second conformity test: Use a hoisting device to hoist the assembled anti-scour device onto the pile foundation in the installation sequence, use the anti-scour device's own weight to sink it above the support beam, and temporarily fix the groove of the anti-scour device on the support beam to perform a second conformity test; S7, installing the anti-scour device: after the second qualification test is passed, the anti-scour device is permanently fixed on the support beam, and a cable is laid in the cable channel, one end of the cable is connected to the control system, and the other end is connected to the water flow sensor and the terrain description instrument, and the hoisting equipment is evacuated to prepare for the next installation of the anti-scour device; S8. Installing the submarine data center: After completing the installation of the anti-scour device, the submarine data center is fixedly installed on top of the pile foundation, and the above steps S3 to S8 are repeated until all the anti-scour devices and the submarine data center are installed.

8. The method for constructing and assembling a pile foundation anti-scour device for a submarine data center according to claim 7, characterized in that: The assembly sequence set in step S3 is to install from the center of the pile foundation model to the periphery, that is, starting from the fixed structure and extending outward to the inclination structure, the rotation structure and the anti-collision structure in sequence.

9. The method for constructing and assembling a pile foundation anti-scour device for a submarine data center according to claim 7, characterized in that: The qualification test in step S4 includes a sensitivity test of the water flow sensor, a structural strength test, a rotation sensitivity test of the rotating structure, and a tilt sensitivity test of the tilt structure.

10. The method for constructing and assembling a pile foundation anti-scour device for a submarine data center according to claim 7, characterized in that: The lifting equipment in step S6 is equipped with 4 to 8 mooring cables electrically connected to the control system, and a grab hook is connected to the end of each mooring cable. Each grab hook is provided with a positioning device. The lifting equipment grabs the first lifting ear and the second lifting ear through the grab hook to lift the anti-scour device, and uses the positioning device to monitor the position data of each first lifting ear and each second lifting ear and feed it back to the control system. The control system adjusts the length of the mooring cables according to the position data.

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