A submarine data center pile foundation anti-scour device and construction and assembly method

Abstract

The present invention relates to an anti-scour device for pile foundations of a submarine data center and a construction and assembly method thereof, belonging to the technical field of marine foundation protection. The device comprises a fixed structure, an inclination structure for controlling the tilt angle and tilt direction, a rotation structure for controlling the rotation angle, and an anti-scour structure. A water flow sensor and a terrain scanner are used to detect the tidal direction and seabed scouring and silting conditions in real time. The control system dynamically adjusts the inclination and rotation angles of the device to reduce the scouring and erosion effects of ocean currents on the pile foundation. The construction and assembly method comprises the steps of anti-scour device design, block prefabrication, assembly, a first qualification test, pile foundation construction, a second qualification test, installation of the anti-scour device, and installation of a submarine data center. Multiple qualification tests are performed to ensure that the performance of the device under simulated marine environmental conditions is consistent with that in the actual environment, thereby improving the safety and reliability of the marine pile foundation and submarine data and ensuring long-term stable operation.

Description

Technical Field

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

[0002] Data cubes are typically placed on either side of a submarine corridor, forming a connected submarine data center. These data centers utilize the natural cooling effect of seawater, significantly improving the utilization of marine resources while significantly reducing data center construction and operating costs. However, the sheer size of submarine data centers has a significant impact on the surrounding marine environment, particularly by altering flow patterns, causing drastic changes in localized flow velocities and forming complex eddy currents.

[0003] Specifically, the water-blocking effect of the data center and the pile foundation forces some water to change direction, flowing downward along the data center and the pile foundation. This creates strong vortices where it meets the seabed current. This vortex phenomenon poses a severe challenge to the pile foundation, particularly in the hollowed-out areas of the data center close to the seabed. The water velocity increases dramatically, exacerbating the vortex and causing significant scouring of seabed sediment in this area, gradually forming scour pits. This not only weakens the seabed's support for the pile foundation but also increases the risk of the pile foundation becoming exposed, 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 layers, gravity sand ballast beds and grouting reinforcement, can alleviate the scour problem to a certain extent. However, they are limited by the disadvantages of high material consumption, long construction period, high cost and easy damage to the pile foundation anti-corrosion layer. Their 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 solved urgently in the field of offshore wind power engineering. Summary of the Invention

[0006] In view of the deficiencies mentioned in the above technical background, the 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 installed on the pile foundation. The pile foundation is provided with an integrally cast support beam near the seabed surface. The support beam 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. The inclination structure and the rotation structure are both electrically connected to an external control system, which 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 tilt structure is arranged around the outer periphery of the fixed structure and is used to control the tilt angle and tilt direction of the anti-scour device. A gear is provided on the inner side of the tilt structure and is used to engage with the tooth groove to control the anti-scour device to move along the axis of the pile foundation.

[0011] The rotating structure includes a rotating assembly and a casing, the rotating assembly having an inner ring and an outer ring that rotate relatively, the inner ring of the rotating assembly being sleeved on the outside of the inclination structure, the outer ring of the rotating assembly being sleeved with the casing, the bottom surface of the casing being circumferentially evenly provided with a plurality of support frames, the free ends of the support frames being provided with second lifting ears, and the lower surfaces of the support frames being provided with a terrain scanner; more than three layers of hydraulic rods are provided on the outer side of the inclination structure, the hydraulic rods being rigidly connected to the inner ring, and the upper and lower surfaces of the inclination structure being provided with elastic watertight rubber;

[0012] The anti-impact structure includes an anti-impact plate and a protective cover. The anti-impact plate is arranged circumferentially around the outer circumference of the casing and is installed on the upper surface of several support frames. The protective cover is arranged on the outer side of the anti-impact plate. The outer wall of the protective cover is provided with a water flow sensor.

[0013] The anti-collision plate is composed of two semicircular rings, and the two joints of each semicircular ring are respectively provided with a clamping strip and a clamping slot. The clamping strips and the clamping slots of the two semicircular rings are plugged into each other to form a complete circular anti-collision plate. The lower surface of the anti-collision plate is provided with a plurality of screw holes, and the anti-collision plate is installed on the upper surface of the plurality of support frames by passing bolts through the screw holes.

[0014] The terrain scanner and the water flow sensor are both electrically connected to the control system.

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

[0016] Furthermore, the two semicircular rings and the semicircular ring and the protective cover are fixed by connecting parts, each of the connecting parts 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 the two adjacent fastening heads.

[0017] 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 pins. A bionic water plant installation hole is provided on the upper surface of the connecting frame for installing bionic water plants.

[0018] A method for constructing and assembling a submarine data center pile foundation anti-scour device according to the present invention comprises the following steps:

[0019] S1. Anti-scour device design phase: Obtain data on water flow velocity, sediment characteristics, and wave height in the sea area, calculate the impact of water flow on the anti-scour device, and then determine its basic size, shape, and material;

[0020] S2. Prefabricating the anti-scour device in blocks: Determine the size, shape, and quantity of each prefabricated block according to design requirements. The prefabricated block includes the fixed structure, the tilt structure, the rotation structure, and the anti-scour structure. The prefabricated blocks are produced on an assembly line and transported to the assembly area via a conveyor for assembly.

[0021] S3. Assembling the anti-scour device: The assembly area is provided with a pile foundation model, and the support beam is provided on the pile foundation model 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 grasped by a robotic arm according to a set assembly sequence and installed on the pile foundation model to assemble the anti-scour device.

[0022] S4. First Qualification Test: After assembly is completed, the anti-scour device is subjected to a first qualification test according to design requirements. After the test is completed, the first lifting lug and the second lifting lug are lifted by a mechanical hook, so that the entire anti-scour device is lifted onto a transport vessel, and then transported by the transport vessel to the installation sea area.

[0023] S5. Pile foundation construction: Concrete pouring technology is used to construct the pile foundation at the predetermined location in the sea area. During pouring, the support beam is integrally cast around the periphery of the pile foundation. The distance between the support beam and the seabed is determined according to the design requirements. A cable channel is reserved in the center of the pile foundation.

[0024] S6. Second conformity test: Use a lifting 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 for the second conformity test.

[0025] S7. Installing the anti-scour device: After the second qualification test is passed, the anti-scour device is permanently fixed to 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 scanner. The hoisting equipment is removed and preparations are made for the next anti-scour device installation.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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 lug and the second lifting lug through the grab hook to lift the anti-scour device, and uses the positioning device to monitor the position data of each first lifting lug and each second lifting lug and feed it back to the control system. The control system adjusts the length of the mooring cable according to the position data.

[0030] In summary, the beneficial effects of the present invention are:

[0031] 1. The anti-scour device for the pile foundation of the submarine data center of the present invention realizes the precise adjustment function of the inclination angle, inclination direction and rotation angle of the anti-scour device by introducing an inclination structure and a rotation structure. The terrain scanner and water flow sensor are used to detect the tide direction and the scouring and silting conditions of the seabed 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 and reduce the risk of secondary scouring. The inclination and rotation angles of the device are precisely controlled 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.

[0032] 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 plants always faces the water flow, thereby enhancing its anti-scour function; since the anti-scour device is assembled from independent prefabricated blocks such as a fixed structure, an inclination structure, a rotating structure, and an anti-scour structure, it is easy to disassemble and replace. When the bionic water plants are 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 plants and anti-scour plates of the present invention allows the mud and sand in the water to fall smoothly onto the anti-scour plates after being blocked by the bionic water plants, and slide down along the surface that is 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.

[0033] 2. The construction and assembly method of the submarine data center pile foundation anti-scour device of the present invention uses factory-prefabricated fixed structures, tilt structures, rotating structures, and independent prefabricated blocks of anti-scour structures, 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 precise adjustments and tests are performed to simulate the actual working environment to reduce errors and risks during on-site installation. After assembly, debugging and qualification inspection are carried out again on the construction pile foundation to ensure that the performance of the anti-scour device under simulated marine environmental 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 lifting process.

[0034] 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 foundations are poured and meet the strength requirements, the anti-scour devices can be installed immediately, while the next set of pile foundations continues 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 having to wait for the completion of work on other non-critical paths, enhancing construction flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a top view of an anti-scour device for a pile foundation of a submarine data center according to an embodiment of the present invention;

[0036] Figure 2 This is a bottom view of an anti-scour device for a pile foundation of a submarine data center according to an embodiment of the present invention;

[0037] Figure 3 yes Figure 1 AA cross-sectional view;

[0038] Figure 4 is a schematic diagram of the upper surface of the anti-collision plate according to an embodiment of the present invention;

[0039] Figure 5 is a schematic diagram of the lower surface of the anti-collision plate according to an embodiment of the present invention;

[0040] Figure 6 is a schematic diagram of a connecting frame of the present invention;

[0041] Figure 7 This 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;

[0042] Among them: 1-anti-scour 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-scour structure, 141-anti-scour plate, 1411-semicircular ring, 1412-card strip, 1413-card slot, 1414-screw hole, 1415-bolt, 142-protective cover, 1421-water flow sensor, 15-connector, 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

[0043] The following is a detailed description of the specific embodiments of the present invention 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.

[0044] 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 scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0045] like Figures 1 to 6 As shown, an anti-scour device 1 for a submarine data center pile foundation 2 of this embodiment is provided on the pile foundation 2. The pile foundation 2 is provided with an integrally cast support beam 21 near the seabed surface. The structure includes a fixed structure 11, an angled structure 12, a rotating structure 13, and an anti-scour structure 14, which are radially connected in sequence from the outer wall of the pile foundation 2. The angled structure 12 and the rotating structure 13 are both electrically connected to an external control system (not shown in the figure). 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, allowing the anti-scour device 1 to quickly respond to changes in ocean currents, thereby reducing the need for manual operation.

[0046] The fixing structure 11 is a circular structure with an inner diameter slightly larger than the outer diameter of the pile foundation 2. 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 fixing structure 11, and a tooth groove 112 is provided on the outer side of the fixing structure 11.

[0047] The tilt structure 12 is arranged around the outer periphery of the fixed structure 11 and is used to control the tilt angle and tilt direction of the anti-scour device 1. A gear 121 is provided on the inner side of the tilt structure 12 for combining with the tooth groove 112 to control the movement of the anti-scour device 1 along the axial direction of the pile foundation 2; three layers of hydraulic rods 122 are provided on the outer side of the tilt 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, with a total of 24 hydraulic rods 122. Each hydraulic rod 122 can independently adjust its extension length. By adjusting the length of these hydraulic rods 122, the device can be precisely adjusted at multiple angles, and the tilt angle and tilt direction of the entire anti-scour device 1 can be controlled to adapt to different ocean current conditions and optimize its resistance to ocean currents. The upper and lower surfaces of the tilt structure 12 are provided with elastic watertight rubber to provide a good sealing effect and effectively prevent liquid leakage.

[0048] 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 relative to each other. 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. Eight support frames 133 are evenly distributed around the bottom surface of the casing 132. 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 seabed scouring and silting conditions. 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.

[0049] The anti-collision structure 14 includes an anti-collision plate 141 and a protective sleeve 142. The anti-collision plate 141 is arranged in an annular direction around the outer circumference of the casing 132 and is installed on the upper surface of 8 support frames 133. The protective sleeve 142 is sleeved on the outside 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 groove 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 screw holes 1414 are penetrated by bolts 1415 to install the anti-collision plate 141 on the upper surface of the 8 support frames 133. 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 provided 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 plant 17 installation hole 162 for installing the bionic water plant 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 effect of 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 direction and providing data support for the automatic control system of the anti-scour device 1.

[0050] The terrain scanner and water flow sensor 1421 are both electrically connected to the control system and receive data from these sensors in real time. Based on the data obtained in real time, 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.

[0051] 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 structural strength requirements, 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.

[0052] like Figure 7 As shown, a method for constructing and assembling an anti-scour device 1 for a submarine data center pile foundation 2 of this embodiment includes the following steps:

[0053] S1. Design phase of the anti-scour device 1: Obtain data on the water velocity, sediment characteristics, and wave height 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;

[0054] The main function of the anti-scour device 1 based on this embodiment is to prevent water flow from scouring the pile foundation 2 structure of the submarine data center. 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 phase, 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 impact 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.

[0055] S2. Prefabricated anti-scour device 1: The size, shape, and quantity of each prefabricated block are determined according to the design requirements. The prefabricated block includes a fixed structure 11, an angled structure 12, a rotating structure 13, and an anti-scour structure 14. The prefabricated blocks are produced on an assembly line and transported to the assembly area via a conveyor for assembly.

[0056] The factory-prefabricated anti-scour device 1 is produced in blocks and standardized and streamlined within the factory, which significantly improves construction efficiency and quality. This 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 during construction 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 and final quality of the device construction are effectively guaranteed.

[0057] 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 using a computer-aided positioning system. The prefabricated blocks are grabbed by a robotic arm according to a set assembly sequence and installed on the pile foundation model to assemble the anti-scour device 1.

[0058] Assembling on a pile foundation model can simulate the actual working environment, ensuring that the anti-scour device 1 has been accurately adjusted and tested before actual installation, 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.

[0059] S4. First Qualification Test: After assembly is completed, the anti-scour device 1 is subjected to a first qualification test according to the design requirements. After the test 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 a transport vessel and transported to the installation sea area by the transport vessel;

[0060] Because hydrological conditions, seabed topography, soil characteristics, and factors such as waves and tidal currents vary from one sea area to another, the scouring and sedimentation conditions in different sea areas dictate different requirements for the rotational and tilting angles of the anti-scour device 1. These factors collectively influence the scouring effect of water on the pile foundation, thereby determining the operating conditions that the anti-scour device 1 must adapt to. Therefore, the design requirements for the anti-scour device 1 must be based on a detailed analysis and understanding of the scouring and sedimentation conditions in a specific sea area. This allows the most appropriate configuration of the anti-scour device 1, including its rotational and tilting angles, to be determined, ensuring that the anti-scour device 1 can provide maximum protection in various marine environments.

[0061] S5. Construction of pile foundation 2: Concrete pouring technology is used to construct pile foundation 2 at a predetermined location in the sea area. During pouring, support beams 21 are integrally cast around the periphery of pile foundation 2. The distance between support beams 21 and the seabed is determined according to design requirements. A cable channel is reserved in the center of pile foundation 2.

[0062] S6. Second conformity test: Use a lifting device to hoist the assembled anti-scour device 1 onto the pile foundation 2 according to the installation sequence. Use the anti-scour device 1's own weight to sink it above the support beam 21. Temporarily fix the groove 111 of the anti-scour device 1 to the support beam 21 and perform the second conformity test.

[0063] The purpose of the second qualification test is to ensure that the performance of the anti-scour device 1 under simulated marine environmental conditions is consistent with that in actual environments, verify the quality of its design and assembly, and ensure more precise coordination with the pile foundation 2. This second qualification test confirms the safety and reliability of the anti-scour device 1, ensuring its ability to effectively resist ocean currents and protect the pile foundation 2 during long-term operation. It also allows for the timely identification and resolution of issues that may not have manifested under simulated conditions, reducing the difficulty and cost of subsequent maintenance and mitigating safety risks caused by device failure or performance deficiencies.

[0064] S7. Install the anti-scour device 1: After passing the second qualification test, the anti-scour device 1 is permanently fixed to the support beam 21. 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 scanner. The lifting equipment is removed and preparations are made for the next installation of the anti-scour device 1.

[0065] 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 scanner. It can monitor the water flow and terrain changes in the sea area over a long period of time, timely discover potential scouring problems, 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.

[0066] S8. Install the submarine data center: After completing the installation of the anti-scour device 1, 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.

[0067] 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 tilt structure 12, the rotating structure 13 and the anti-collision structure 14 in sequence.

[0068] 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 .

[0069] 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 lug and the second lifting lug 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 lug and each second lifting lug 134 and feed it back to the control system. The control system adjusts the length of the mooring cable according to the position data.

[0070] 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.

[0071] It should be understood that the above 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 groundbreaking innovations all fall within the scope of protection of the present invention.

Claims

1. A subsea data center pile foundation anti-scour device, provided 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. 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 tilt structure is arranged around the outer periphery of the fixed structure and is used to control the tilt angle and tilt direction of the anti-scour device. A gear is provided on the inner side of the tilt structure and is used to engage with the tooth groove to control the anti-scour device to move along the axis of the pile foundation. The rotating structure includes a rotating assembly and a casing, the rotating assembly having an inner ring and an outer ring that rotate relatively, the inner ring of the rotating assembly being sleeved on the outside of the inclination structure, the outer ring of the rotating assembly being sleeved with the casing, the bottom surface of the casing being circumferentially evenly provided with a plurality of support frames, the free ends of the support frames being provided with second lifting ears, and the lower surfaces of the support frames being provided with a terrain scanner; more than three layers of hydraulic rods are provided on the outer side of the inclination structure, the hydraulic rods being rigidly connected to the inner ring, and the upper and lower surfaces of the inclination structure being provided with elastic watertight rubber; The anti-impact structure includes an anti-impact plate and a protective cover. The anti-impact plate is arranged circumferentially around the outer circumference of the casing and is installed on the upper surface of several support frames. The protective cover is arranged on the outer side of the anti-impact plate. The outer wall of the protective cover is provided with a water flow sensor. The anti-collision plate is composed of two semicircular rings, and the two joints of each semicircular ring are respectively provided with a clamping strip and a clamping slot. The clamping strips and the clamping slots of the two semicircular rings are plugged into each other to form a complete circular anti-collision plate. The lower surface of the anti-collision plate is provided with a plurality of screw holes, and the anti-collision plate is installed on the upper surface of the plurality of support frames by passing bolts through the screw holes. The terrain scanner and the water flow sensor are both electrically connected to the control system.

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

3. The anti-scour device for pile foundation of a submarine data center according to claim 1, characterized in that: The two semicircular rings and the semicircular ring and the protective cover are fixed by connecting parts, each of the connecting parts 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.

4. The anti-scour device for pile foundation of a submarine data center according to claim 1, 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 pins. A bionic water plant installation hole is provided on the upper surface of the connecting frame for installing bionic water plants.

5. 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 4, characterized in that The following steps are involved: S1. Anti-scour device design phase: Obtain data on water flow velocity, sediment characteristics, and wave height in the sea area, calculate the impact of water flow on the anti-scour device, and then determine its basic size, shape, and material; S2. Prefabricating the anti-scour device in blocks: Determine the size, shape, and quantity of each prefabricated block according to design requirements. The prefabricated block includes the fixed structure, the tilt structure, the rotation structure, and the anti-scour structure. The prefabricated blocks are produced on an assembly line and transported to the assembly area via a conveyor for assembly. S3. Assembling the anti-scour device: The assembly area is provided with a pile foundation model, and the support beam is provided on the pile foundation model 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 grasped by a robotic arm according to a set assembly sequence and installed on the pile foundation model to assemble the anti-scour device. S4. First Qualification Test: After assembly is completed, the anti-scour device is subjected to a first qualification test according to design requirements. After the test is completed, the first lifting lug and the second lifting lug are lifted by a mechanical hook, so that the entire anti-scour device is lifted onto a transport vessel, and then transported by the transport vessel to the installation sea area. S5. Pile foundation construction: Concrete pouring technology is used to construct the pile foundation at the predetermined location in the sea area. During pouring, the support beam is integrally cast around the periphery of the pile foundation. The distance between the support beam and the seabed 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 lifting 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 for the second conformity test. S7. Installing the anti-scour device: After the second qualification test is passed, the anti-scour device is permanently fixed to 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 scanner. The hoisting equipment is removed and preparations are made for the next anti-scour device installation. 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.

6. The method for constructing and assembling a submarine data center pile foundation anti-scour device according to claim 5, 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.

7. The method for constructing and assembling a submarine data center pile foundation anti-scour device according to claim 5, 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.

8. The method for constructing and assembling a submarine data center pile foundation anti-scour device according to claim 5, 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 lug and the second lifting lug through the grab hook to lift the anti-scour device, and uses the positioning device to monitor the position data of each first lifting lug and each second lifting lug and feed it back to the control system. The control system adjusts the length of the mooring cable according to the position data.

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