A GNSS positioning hoisting installation construction method of an offshore wind power data center

Abstract

The application provides a GNSS positioning hoisting installation construction method for a marine wind power data center, belongs to the technical field of positioning hoisting installation construction, adopts three GNSS receivers to cooperatively measure and obtain the plane position and attitude parameters of the marine data center components, and completes accurate positioning of the splicing of the steel pipe pile by relying on the actually measured coordinates; adopts an LRH high polymer sling matched with a four-point hoisting mode to improve the marine environment adaptability of the lifting appliance and balance the stress of the hoisting points; after positioning, the hoisting point binding and fixing are completed, and then the sea binding structure cutting operation is carried out, so that the risk of multi-process cross operation is avoided, the marine operation time is shortened, and the overall safety and installation precision of the marine installation of the marine wind power data center are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of positioning hoisting installation construction, and specifically relates to a GNSS positioning hoisting installation construction method for an offshore wind power data center. Background Art

[0002] With the integrated development of the offshore wind power industry and the offshore computing power industry, offshore data centers supporting offshore wind power have been gradually popularized and applied. Offshore wind power data centers are usually carried on offshore wind power foundations. Offshore construction sites are comprehensively affected by wind waves, swells, ocean currents and tides, so the window for offshore installation operations is limited, which puts extremely high requirements on positioning measurement, hoisting technology, and the removal process of auxiliary structures after positioning.

[0003] In the existing offshore installation and construction technology for offshore wind power data centers, a single GNSS receiver is conventionally used for positioning offshore components. A single receiver can only obtain single-point coordinates and cannot obtain the planar attitude of the component. Affected by offshore hull rocking and wind and wave disturbances, the positioning measurement error is large, it is difficult to align the insertion tip of the data center with the constructed steel pipe pile, and alignment deviation is very prone to occur, resulting in bump damage to the component. In severe cases, it will cause deformation of the steel pipe pile body and bring great offshore construction risks.

[0004] In terms of hoisting construction, traditional hoisting of large offshore components mostly uses steel wire rope slings. Steel wire ropes are prone to corrosion and wear in the offshore high-salt fog marine environment, and there is a risk of broken wires after repeated hoisting operations; at the same time, the traditional hoisting point arrangement is prone to unbalanced force on the hoisting points, and deflection and shaking occur during the hoisting of the component, which further increases the difficulty of offshore positioning and alignment. After the component is hoisted and positioned, the process arrangement of the traditional construction process is unreasonable, the sling unbinding operation and the sea-binding structure cutting operation interfere with each other, there are many offshore operators, the risk of cross-operation is high, the offshore on-site operation time is long, and the requirements for sea conditions are strict. Once the sea conditions deteriorate, construction interruption is very likely to occur, and even offshore safety accidents may be caused.

[0005] In summary, the existing offshore installation technology for offshore wind power data centers has the defects of insufficient positioning measurement accuracy, poor marine environment resistance of hoisting slings, unbalanced force on hoisting points, high cross-operation risk after positioning, and long offshore operation time. It is urgent to develop a set of installation and construction method for offshore wind power data centers with high-precision positioning, high-safety hoisting and reasonable process arrangement. Summary of the Invention

[0006] The purpose of this invention is to overcome the aforementioned shortcomings of existing technologies and provide a GNSS positioning and hoisting installation method for offshore wind power data centers. This invention employs three GNSS receivers to collaboratively measure and obtain the planar position and attitude parameters of the offshore data center components, and uses the measured coordinates of the already constructed steel pipe piles to achieve precise alignment of the insertion points. It utilizes LRH polymer slings combined with a four-point hoisting mode to improve the adaptability of the lifting equipment to the marine environment and balance the stress on the hoisting points. After positioning, the hoisting points are first secured with buckles, and then the sea-bound structure is cut off, avoiding the risks of multiple overlapping operations, shortening the offshore operation time, and improving the overall safety and installation accuracy of the offshore wind power data center installation.

[0007] The present invention employs the following technical solution.

[0008] A method for GNSS positioning hoisting and installation of an offshore wind power data center, comprising: Step 1: Conduct pre-construction preparations for the GNSS positioning hoisting and installation of the offshore wind power data center; Step 2: After completing the pre-construction preparations, install and deploy the measurement and positioning equipment; Step 3: After the measurement and positioning equipment is installed and deployed, the sling and lifting equipment is installed. Step 4: After installing the slings and spreader, carry out the offshore lifting and positioning operations; Step 5: After performing the offshore hoisting and positioning operations, carry out the post-positioning hoisting point binding and securing operations; Step 6: After securing the lifting points in place, proceed with the cutting of the lower marine-supported structure of the data center.

[0009] Furthermore, step 1 specifically includes: A marine site survey was conducted, and the foundation construction of four steel pipe piles was completed. Marine measurements were performed on the four completed steel pipe piles to obtain the planar coordinates and elevation data of the pile tops. This data was then stored in the construction control system of the lifting vessel. Land prefabrication of the data center components was completed, with a pre-installed spigot structure at the bottom of the data center, and a pre-installed sea rigging structure. During the land prefabrication phase, the lifting point bases were welded and fixed. Four lifting point bases were installed around the upper perimeter of the data center components to meet the load-bearing requirements of four-point lifting. Equipment debugging was conducted on the lifting vessel, including the crane system and attitude monitoring system, and a safety inspection of the deck equipment was completed.

[0010] Furthermore, step 2 specifically includes: Three GNSS receivers are installed on the top platform of the data center component. The three GNSS receivers are arranged in a triangle on the top of the data center and are not on the same straight line. The three GNSS receivers are respectively connected to the construction control system at the ship end. Three GNSS receivers collect three-dimensional coordinate data of the top of the data center component in real time. The control system calculates the planar center position, planar rotation attitude, and elevation of the data center component based on the coordinates output by the three GNSS receivers, and indirectly calculates the planar position and attitude angle of the lower tip of the data center. Construction operators manually input the plane position and elevation data of the four steel pipe piles obtained from the previous field measurements into the construction control system. The control system compares the real-time position and posture of the data center tip with the position of the top of the four steel pipe piles and outputs the alignment deviation.

[0011] Furthermore, step 2 specifically includes: When installing the three GNSS receivers, the antenna bases of the GNSS receivers are rigidly welded and fixed to the steel structure on the top of the data center, and leveling shims are installed on the antenna bases. The communication cables that come with the GNSS receivers are waterproof and corrosion-resistant. The cables are laid along the top steel structure components, and waterproof connectors are used at the cable joints. Corrosion-resistant sheaths are added to the outside of the cables to resist corrosion from the high salt spray environment at sea.

[0012] Furthermore, step 2 specifically includes: The specific method for calculating the component attitude based on the coordinates of three GNSS receivers is as follows: The real-time three-dimensional coordinates A(X1,Y1,Z1), B(X2,Y2,Z2), and C(X3,Y3,Z3) of the three GNSS receivers are taken. A plane vector is constructed based on these three coordinates, and the plane rotation angle of the data center component is calculated. Combining the relative geometric dimensions of the three receivers and the data center tip, the real-time plane coordinates, elevation, and rotation attitude of the lower tip are obtained through coordinate transformation matrix conversion. The real-time position and attitude of the tip are compared with the measured coordinates of the tops of the four steel pipe piles, outputting the X-direction deviation, Y-direction deviation, and rotation angle deviation. Based on the deviation data, the operators direct the lifting vessel to adjust its position, and the crane adjusts its lifting attitude to complete the alignment of the tip and the steel pipe piles.

[0013] Furthermore, step 3 specifically includes: Each hook of the ship crane is equipped with two 300t LRH polymer slings; the four lifting points correspond to four lifting point bases respectively, and each pair of slings is connected to a single hook of the crane, with each end of the sling connected to two lifting point bases respectively; During the installation of the slings, inspect the appearance of the LRH polymer slings for any wear, cuts, aging, or damage. Install protective padding at the sling connection point base. After installation, check the sling's stress angle to ensure the angle between the two slings under the same hook is within 30-60° to avoid excessive load. After installation, conduct a trial lift by raising the crane hook to distribute the load evenly on the slings. Lift the data center component 150-300mm away from the support base and let it stand for 3-8 minutes. Check the stress state of the slings and the lifting point base. Only after confirming there are no abnormalities can the offshore transfer and lifting operation commence.

[0014] Furthermore, the LRH polymer sling is a ring-shaped polymer synthetic fiber sling with a rated load of 300t. The surface of the sling is equipped with a wear-resistant and corrosion-resistant protective layer. At the same time, the sling makes flexible contact with the steel structure at the lifting point.

[0015] Furthermore, step 4 specifically includes: The lifting vessel sails to the offshore operation area, positions itself, and anchors. Based on the alignment deviation data output by the GNSS positioning system, the vessel adjusts its heading and position. The crane lifts the data center component and transfers it above the four steel pipe pile foundations. Using real-time data on the tip position and attitude from three GNSS receivers, the crane's lifting position and luffing angle are dynamically adjusted, while simultaneously adjusting the vessel's position and continuously correcting X-axis, Y-axis, and rotation angle deviations to align the lower tip of the data center with the tops of the four steel pipe piles. The crane hook is lowered, and the data center tip is inserted into the outside of the four steel pipe piles, completing the offshore positioning of the data center component and obtaining the positioned offshore wind power data center component. During the placement operation, the sea conditions are monitored in real time. When the effective wave height at sea is greater than 1.5m, the lowering operation is stopped and the placement operation is resumed after the sea conditions meet the construction requirements. During the placement process, the measurement data of three GNSS receivers are continuously read to monitor the alignment gap between the tip and the steel pipe pile in real time.

[0016] Furthermore, step 5 specifically includes: After the data center components were in place, the crane hook remained loaded, and the offshore construction team reached the upper platform of the data center components to carry out the lifting point binding and fixing operation. Using shackles and cables, the four lifting point bases were bound and reinforced to the main steel structure of the data center, transferring the lifting load from the crane hook to the binding structure of the component body. After the binding and fixing were completed, it was confirmed that the binding structure met the safety requirements, and then the crane hook load was released, the LRH polymer slings were removed, and the lifting equipment dismantling operation was completed.

[0017] Furthermore, step 6 specifically includes: After the lifting slings were removed, welding personnel began cutting off the sea-binding structure beneath the data center. This sea-binding structure is a steel protective component used to protect the spikes during the land-based prefabrication and transfer phase. It is located beneath the data center components, surrounding the spikes. Welding personnel, equipped with work gear, moved to the work position beneath the data center and used thermal cutting to cut the sea-binding structure in sections. The cutting operation proceeded sequentially in segments, with fall protection measures in place during the cutting process. The cut sea-binding structure fragments were then lifted to the ship's deck using a ship crane. After all the sea-binding structures were removed, the appearance of the data center spikes and steel pipe piles was inspected.

[0018] The beneficial effects of the present invention are as follows, compared with the prior art: This invention provides a GNSS positioning and hoisting installation method for offshore wind power data centers. Addressing the shortcomings of existing technologies such as insufficient positioning accuracy, poor marine adaptability of hoisting equipment, uneven stress on hoisting points, high risks of cross-operations at sea, and stringent requirements for the offshore operation window, this invention employs a triangular arrangement of three GNSS receivers. The three GNSS receivers collaboratively acquire coordinates, enabling not only the acquisition of single-point planar coordinates of the components but also the calculation of the spatial attitude of the data center components. This allows for the calculation of the real-time position and rotation angle of the lower insertion point, overcoming the limitation of a single GNSS receiver only acquiring single-point coordinates and not component attitude. The three GNSS receivers have a sufficiently large baseline, providing high positioning accuracy in RTK differential mode. This effectively overcomes measurement disturbances caused by sea waves and ship swaying, significantly improving the alignment accuracy between the data center insertion point and the steel pipe pile, reducing the risk of hard collisions and impact damage between the insertion point and the steel pipe pile, protecting the steel pipe pile foundation and the data center structure, reducing the time spent on on-site alignment adjustments at sea, and shortening the overall offshore operation time. Traditional single GNSS receiver alignment typically takes 2-4 hours, while this invention reduces alignment time to less than 1 hour, significantly decreasing reliance on favorable sea conditions. Regarding the lifting equipment, each hook is equipped with two 300t LRH polymer slings, employing a four-point lifting mode. Compared to traditional wire rope slings, LRH polymer slings offer superior resistance to salt spray corrosion and aging, making them suitable for high-salt-spray marine environments and avoiding the safety hazards of wire rope rust and breakage at sea. The slings' flexible contact with the lifting point base prevents impact damage to the steel structure during lifting. The four-point lifting mode distributes the load evenly across four lifting points with the dual hooks, suppressing twisting and swaying of components under sea conditions, improving stability during offshore lifting, and reducing operational risks. Trial lifting verifies the lifting point attitude, proactively identifying installation defects and preventing offshore lifting accidents from the outset. The process flow has been optimized. After positioning, the upper lifting points are secured with lashing, transferring the lifting load to the lashing structure of the component itself. The lifting slings and equipment are then removed, followed by the cutting of the lower sea-bonded structure. This process decouples the lifting equipment removal from the sea-bonded cutting operation, eliminating the risk of simultaneous work at different levels and preventing objects falling from the upper lifting equipment during removal from striking personnel working on the lower cutting side. This significantly reduces the safety hazards of high-risk cross-operations at sea. Workers are primarily concentrated on the upper platform for lashing, reducing the frequency of work in the dangerous area below the component, lowering the risk of personnel falling into the water, and improving the inherent safety level of offshore construction. The sea-bonded structure is cut in sections, with controlled weight of each cutting unit. Cut blocks are promptly lifted away to prevent components from falling into the sea and protect the marine environment. Continuous GNSS attitude monitoring is maintained throughout the process. If component deviation exceeds the limit after positioning, cutting operations can be stopped immediately, and reinforcement can be carried out to prevent further displacement and ensure structural safety throughout the entire construction process.The overall process is adapted to the offshore installation conditions of offshore wind power data centers. The process steps are simple and can be completed using existing offshore crane vessels without the need for large-scale vessel modifications, resulting in low equipment modification costs. The entire construction method can effectively reduce offshore operation time, improve the fault tolerance of construction under complex sea conditions, expand the operation window for offshore installation of offshore wind power data centers, and facilitate the promotion and implementation of integrated offshore wind power and offshore computing power projects. Attached Figure Description

[0019] Figure 1 This is a flowchart of the GNSS positioning hoisting and installation construction method for the offshore wind power data center of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this invention.

[0021] like Figure 1 As shown, this invention proposes a GNSS positioning and hoisting installation method for offshore wind power data centers, including the following steps: Step 1: Conduct pre-construction preparations for the GNSS positioning hoisting and installation of the offshore wind power data center; In a preferred but non-limiting embodiment of the present invention, step 1 specifically includes: A marine site survey was conducted, and the foundation construction of four steel pipe piles was completed. Marine measurements were performed on the four completed steel pipe piles to obtain the planar coordinates and elevation data of the pile tops. This data was then stored in the construction control system of the lifting vessel. Land prefabrication of the data center components was completed. A pre-installed spigot structure was reserved at the bottom of the data center, and a sea-binding structure was pre-installed at the bottom to protect the spigots during land transport, preventing damage from impacts. During the land prefabrication phase, the lifting point bases were welded and fixed. Four lifting point bases were installed around the upper perimeter of the data center components to meet the force requirements of four-point lifting. Equipment debugging was conducted on the lifting vessel, including the crane system and attitude monitoring system. A safety inspection of the vessel's deck equipment was also completed.

[0022] Step 2: After completing the pre-construction preparations, install and deploy the measurement and positioning equipment; In a preferred but non-limiting embodiment of the present invention, step 2 specifically includes: Three GNSS receivers are installed on the top platform of the data center component. The three GNSS receivers are arranged in a triangle on the top of the data center and are not on the same straight line. The three GNSS receivers are respectively connected to the construction control system at the ship end. Three GNSS receivers collect three-dimensional coordinate data of the top of the data center component in real time. The control system calculates the planar center position, planar rotation attitude, and elevation of the data center component based on the coordinates output by the three GNSS receivers, and indirectly calculates the planar position and attitude angle of the lower tip of the data center. Construction operators manually input the plane position and elevation data of the four steel pipe piles obtained from the previous field measurements into the construction control system. The control system compares the real-time position and posture of the data center tip with the position of the top of the four steel pipe piles and outputs the alignment deviation, providing positioning guidance for ship adjustment and crane luffing operations.

[0023] In a preferred but non-limiting embodiment of the present invention, step 2 further includes: During installation, the antenna bases of the three GNSS receivers are rigidly welded to the steel structure at the top of the data center. Leveling shims are installed on the antenna bases to ensure that the GNSS antennas are installed on a level plane. The communication cables for the GNSS receivers are waterproof and corrosion-resistant. The cables are laid along the top steel structure components, and waterproof connectors are used at the cable joints. Corrosion-resistant sheaths are added to the outside of the cables to resist corrosion in the high-salt spray environment at sea. The sampling frequency of the three GNSS receivers is no less than 10Hz, which can output component position and attitude data in real time, adapting to the measurement needs of high-frequency swaying of components under marine wind and wave conditions.

[0024] In a preferred but non-limiting embodiment of the present invention, step 2 further includes: The specific method for calculating the component attitude based on the coordinates of three GNSS receivers is as follows: The real-time three-dimensional coordinates A(X1,Y1,Z1), B(X2,Y2,Z2), and C(X3,Y3,Z3) of the three GNSS receivers are taken. A plane vector is constructed based on these three coordinates, and the plane rotation angle of the data center component is calculated. Combining the relative geometric dimensions of the three receivers and the data center tip, the real-time plane coordinates, elevation, and rotation attitude of the lower tip are obtained through coordinate transformation matrix conversion. The real-time position and attitude of the tip are compared with the measured coordinates of the tops of the four steel pipe piles, outputting the X-direction deviation, Y-direction deviation, and rotation angle deviation. Based on the deviation data, the operators direct the lifting vessel to adjust its position, and the crane adjusts its lifting attitude to complete the alignment of the tip and the steel pipe piles.

[0025] Step 3: After the measurement and positioning equipment is installed and deployed, the sling and lifting equipment is installed. In a preferred but non-limiting embodiment of the present invention, step 3 further includes: Each hook of the ship crane is equipped with two 300t LRH polymer slings; the invention can set a total of 4 lifting points, and adopts a four-point lifting mode; the 4 lifting points correspond to 4 lifting point bases respectively, and each pair of slings is connected to a single hook of the crane, with the two ends of the slings connected to the two lifting point bases respectively. During the installation of the slings, inspect the appearance of the LRH polymer slings for any wear, cuts, aging, or damage. Install protective padding at the sling connection point base to prevent the steel structure's sharp edges from cutting the slings. After installation, check the sling's stress angle to ensure the angle between the two slings under the same hook is within 30-60° to avoid excessive load. After the lifting equipment is installed, conduct a trial lift by slowly raising the crane hook to evenly distribute the load on the slings. Lift the data center component 150-300mm away from the support base and let it stand for 3-8 minutes. Check the stress state of the lifting equipment and the lifting point base. Only after confirming there are no abnormalities can the offshore transfer and lifting operation commence.

[0026] In a preferred but non-limiting embodiment of the present invention, the LRH polymer sling is a ring-shaped polymer synthetic fiber sling with a rated load of 300t. The sling surface is provided with a wear-resistant and corrosion-resistant protective layer, suitable for marine conditions characterized by high salt spray and high humidity. The sling possesses UV resistance and salt spray corrosion resistance, reducing the risk of corrosion damage in marine environments compared to traditional wire rope slings. Simultaneously, the sling provides flexible contact with the steel structure at the lifting point, preventing impact damage to the lifting point base during the lifting process. The four-point lifting mode, with four lifting points arranged in a rectangular pattern, allows for balanced force distribution through the crane's double hooks, effectively suppressing component deflection, torsional swaying, and improving the stability of lifting operations in rough seas.

[0027] Step 4: After installing the slings and spreader, carry out the offshore lifting and positioning operations; In a preferred but non-limiting embodiment of the present invention, step 4 specifically includes: The lifting vessel sails to the offshore operation area, positions itself, and anchors. Based on the alignment deviation data output by the GNSS positioning system, the vessel adjusts its heading and position. The crane lifts the data center component and transfers it above the four steel pipe pile foundations. Using real-time data on the tip position and attitude from three GNSS receivers, the crane's lifting position and luffing angle are dynamically adjusted, while simultaneously adjusting the vessel's position and continuously correcting X-axis, Y-axis, and rotation angle deviations to align the lower tip of the data center with the tops of the four steel pipe piles. The crane hook is slowly lowered, inserting the data center tip onto the outside of the four steel pipe piles, completing the offshore positioning of the data center component and obtaining the positioned offshore wind power data center component.

[0028] During the placement operation, the sea conditions are monitored in real time. When the effective wave height at sea is greater than 1.5m, the lowering operation is stopped and the placement operation is resumed after the sea conditions meet the construction requirements. During the placement process, the measurement data of three GNSS receivers are continuously read to monitor the alignment gap between the tip and the steel pipe pile in real time, so as to prevent hard collision between the tip and the steel pipe pile and protect the steel pipe pile body and the data center tip structure.

[0029] Step 5: After performing the offshore hoisting and positioning operations, carry out the post-positioning hoisting point binding and securing operations; In a preferred but non-limiting embodiment of the present invention, step 5 specifically includes: After the data center components were in place, the crane hook remained loaded, and the offshore construction team reached the upper platform of the data center components to carry out the lifting point binding and fixing operation. High-strength shackles and cables were used to bind and reinforce the four lifting point bases to the main steel structure of the data center, transferring the lifting load from the crane hook to the binding structure of the component body. After the binding and fixing were completed, it was confirmed that the binding structure met the safety requirements, and then the load on the crane hook was slowly released, the LRH polymer slings were removed, and the lifting equipment dismantling operation was completed.

[0030] In this step, the components are secured with buckles before the lifting gear is removed. This prevents the components from shifting due to wind and waves at sea and ensures the stability of the components after they are in place. At the same time, personnel only need to carry out buckling operations on the upper part of the components and do not need to reach the lower sea-binding structure. The personnel work area is concentrated on the upper platform, avoiding the risk of falling into the water caused by personnel working in the lower high-risk area.

[0031] Step 6: After securing the lifting points in place, proceed with the cutting of the lower marine-supported structure of the data center.

[0032] In a preferred but non-limiting embodiment of the present invention, step 6 specifically includes: After the lifting slings were removed, welding personnel began cutting off the sea-binding structure beneath the data center. This sea-binding structure is a steel protective component used to protect the spikes during the land-based prefabrication and transfer phase. It is located beneath the data center components, surrounding the spikes. Welding personnel, equipped with their work gear, moved to the work position beneath the data center and used thermal cutting to cut the sea-binding structure in sections. The cutting was carried out sequentially, with fall protection measures in place. The cut sea-binding structure fragments were then lifted to the ship's deck using a ship crane to prevent them from falling into the sea and causing marine pollution. After all the sea-binding structures were removed, the appearance of the data center spikes and steel pipe piles was inspected to ensure there was no damage, thus completing the installation of the offshore wind power data center.

[0033] It should be noted that the cutting of the sea-bound structure and the removal of the lifting equipment are decoupled. The upper lifting points are secured first, and the lifting slings and equipment are removed before the cutting of the lower sea-bound structure begins. The simultaneous removal of the lifting equipment and the cutting of the sea-bound structure are no longer carried out concurrently to avoid tools and components from the upper lifting equipment removal operation falling and causing injury to the welding workers below, thus eliminating the safety hazards of overlapping operations at sea. This construction method also includes a monitoring step during the construction process: throughout the entire construction process (S2-S6), position and attitude data output from three GNSS receivers are continuously collected to monitor the planar offset and rotation angle of the data center components in real time. If the planar offset of the component exceeds a threshold after positioning, the subsequent cutting operation is immediately stopped, and the rigging is reinforcing again to ensure the component's position is stable before continuing the cutting of the sea-bound structure.

[0034] Preferably, the installation positions of the three GNSS receivers are such that the triangle formed by the installation centers of the three devices has an area of ​​not less than 2.5㎡, and the sufficiently large baseline distance can reduce the error of attitude calculation and improve the measurement accuracy of the component's rotation attitude. The GNSS receivers adopt RTK differential positioning mode, with a planar positioning accuracy of ±10mm and an elevation measurement accuracy of ±20mm, which can meet the high-precision measurement requirements for the alignment of large marine components.

[0035] Preferably, during the trial lifting operation, attitude data output from three GNSS receivers are collected simultaneously, and the theoretical attitude of the component under the trial lifting state is compared with the measured attitude to verify the force balance of the lifting point. If the component tilts at an angle greater than 0.5° during the trial lifting, the machine is stopped, the installation position of the sling is adjusted to eliminate the lifting tilt, and then the formal sea lifting is carried out.

[0036] Preferably, when cutting the sea-bound structure, segmented cutting is adopted, with the weight of each segment controlled within 500 kg. After each segment is cut, the cut segment is immediately lifted away from the work area by a crane. The cut steel structure segment is not allowed to be suspended on the component body to avoid the risk of the suspended component falling under the wind and waves at sea.

[0037] It should be recognized that embodiments of the present invention may be implemented or carried out by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable storage medium.

[0038] The method can be implemented using standard programming techniques, including a non-transitory computer-readable storage medium configured with a computer program in the computer program, wherein the storage medium is configured such that the computer operates in a specific and predefined manner.

[0039] Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with the computer system; however, if required, the program can be implemented in assembly or machine language.

[0040] In any case, the language can be either compiled or interpreted.

[0041] Furthermore, for this purpose, the program can run on programmed application-specific integrated circuits.

[0042] The processes described herein (or variations and / or combinations thereof) can be executed under the control of one or more computer systems configured with executable instructions, and can be implemented by hardware or a combination thereof as code (e.g., executable instructions, one or more computer programs, or one or more applications) that commonly executes on one or more processors. The computer program includes a plurality of instructions executable by one or more processors.

[0043] Furthermore, the method can be implemented in any suitable computing platform, including but not limited to personal computers, minicomputers, mainframes, workstations, networked or distributed computing environments, standalone or integrated computer platforms, or in communication with charged particle tools or other imaging devices.

[0044] Various aspects of the present invention can be implemented in machine-readable code stored on a non-transitory storage medium or device, whether portable or integrated into a computing platform, such as a hard disk, optical read and / or write storage medium, RAM, ROM, etc., such that it can be read by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the processes described herein.

[0045] Furthermore, machine-readable code, or parts thereof, can be transmitted via wired or wireless networks.

[0046] When such media includes instructions or programs that combine with a microprocessor or other data processor to implement the steps described above, the invention described herein includes these and other different types of non-transitory computer-readable storage media.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A GNSS positioning and hoisting installation method for an offshore wind power data center, characterized in that, include: Step 1: Conduct pre-construction preparations for the GNSS positioning hoisting and installation of the offshore wind power data center; Step 2: After completing the pre-construction preparations, install and deploy the measurement and positioning equipment; Step 3: After the measurement and positioning equipment is installed and deployed, the sling and lifting equipment is installed. Step 4: After installing the slings and spreader, carry out the offshore lifting and positioning operations; Step 5: After performing the offshore hoisting and positioning operations, carry out the post-positioning hoisting point binding and securing operations; Step 6: After securing the lifting points in place, proceed with the cutting of the lower marine rigging structure of the data center.

2. The GNSS positioning and hoisting installation method for offshore wind power data centers according to claim 1, characterized in that, Step 1 specifically includes: A marine site survey was conducted, and the foundation construction of four steel pipe piles was completed. Marine measurements were performed on the four completed steel pipe piles to obtain the planar coordinates and elevation data of the pile tops. This data was then stored in the construction control system of the lifting vessel. Land prefabrication of the data center components was completed, with a pre-installed spigot structure at the bottom of the data center, and a pre-installed sea rigging structure. During the land prefabrication phase, the lifting point bases were welded and fixed. Four lifting point bases were installed around the upper perimeter of the data center components to meet the load-bearing requirements of four-point lifting. Equipment debugging was conducted on the lifting vessel, including the crane system and attitude monitoring system, and a safety inspection of the deck equipment was completed.

3. The GNSS positioning and hoisting installation method for offshore wind power data centers according to claim 2, characterized in that, Step 2 specifically includes: Three GNSS receivers are installed on the top platform of the data center component. The three GNSS receivers are arranged in a triangle on the top of the data center and are not on the same straight line. The three GNSS receivers are respectively connected to the construction control system at the ship end. Three GNSS receivers collect three-dimensional coordinate data of the top of the data center component in real time. The control system calculates the planar center position, planar rotation attitude, and elevation of the data center component based on the coordinates output by the three GNSS receivers, and indirectly calculates the planar position and attitude angle of the lower tip of the data center. Construction operators manually input the plane position and elevation data of the four steel pipe piles obtained from the previous field measurements into the construction control system. The control system compares the real-time position and posture of the data center tip with the position of the top of the four steel pipe piles and outputs the alignment deviation.

4. The GNSS positioning and hoisting installation method for offshore wind power data centers according to claim 3, characterized in that, Step 2 also includes: When installing the three GNSS receivers, the antenna bases of the GNSS receivers are rigidly welded and fixed to the steel structure on the top of the data center, and leveling shims are installed on the antenna bases. The communication cables that come with the GNSS receivers are waterproof and corrosion-resistant. The cables are laid along the top steel structure components, and waterproof connectors are used at the cable joints. Corrosion-resistant sheaths are added to the outside of the cables to resist corrosion from the high salt spray environment at sea.

5. The GNSS positioning and hoisting installation method for offshore wind power data centers according to claim 4, characterized in that, Step 2 also includes: The specific method for calculating the component attitude based on the coordinates of three GNSS receivers is as follows: The real-time three-dimensional coordinates A(X1,Y1,Z1), B(X2,Y2,Z2), and C(X3,Y3,Z3) of the three GNSS receivers are taken. A plane vector is constructed based on these three coordinates, and the plane rotation angle of the data center component is calculated. Combining the relative geometric dimensions of the three receivers and the data center tip, the real-time plane coordinates, elevation, and rotation attitude of the lower tip are obtained through coordinate transformation matrix conversion. The real-time position and attitude of the tip are compared with the measured coordinates of the tops of the four steel pipe piles, outputting the X-direction deviation, Y-direction deviation, and rotation angle deviation. Based on the deviation data, the operators direct the lifting vessel to adjust its position, and the crane adjusts its lifting attitude to complete the alignment of the tip and the steel pipe piles.

6. The GNSS positioning and hoisting installation method for offshore wind power data centers according to claim 5, characterized in that, Step 3 also includes: Each hook of the ship crane is equipped with two 300t LRH polymer slings; the four lifting points correspond to four lifting point bases respectively, and each pair of slings is connected to a single hook of the crane, with each end of the sling connected to two lifting point bases respectively; During the installation of the slings, inspect the appearance of the LRH polymer slings for any wear, cuts, aging, or damage. Install protective padding at the sling connection point base. After installation, check the sling's stress angle to ensure the angle between the two slings under the same hook is within 30-60° to avoid excessive load. After installation, conduct a trial lift by raising the crane hook to distribute the load evenly on the slings. Lift the data center component 150-300mm away from the support base and let it stand for 3-8 minutes. Check the stress state of the slings and the lifting point base. Only after confirming there are no abnormalities can the offshore transfer and lifting operation commence.

7. The GNSS positioning and hoisting installation method for offshore wind power data centers according to claim 6, characterized in that, LRH polymer slings are ring-shaped polymer synthetic fiber slings with a rated load of 300t. The surface of the sling is equipped with a wear-resistant and corrosion-resistant protective layer; at the same time, the slings make flexible contact with the steel structure at the lifting point.

8. The GNSS positioning and hoisting installation method for offshore wind power data centers according to claim 7, characterized in that, Step 4 specifically includes: The lifting vessel sails to the offshore operation area, positions itself, and anchors. Based on the alignment deviation data output by the GNSS positioning system, the vessel adjusts its heading and position. The crane lifts the data center component and transfers it above the four steel pipe pile foundations. Using real-time data on the tip position and attitude from three GNSS receivers, the crane's lifting position and luffing angle are dynamically adjusted, while simultaneously adjusting the vessel's position and continuously correcting X-axis, Y-axis, and rotation angle deviations to align the lower tip of the data center with the tops of the four steel pipe piles. The crane hook is lowered, and the data center tip is inserted into the outside of the four steel pipe piles, completing the offshore positioning of the data center component and obtaining the positioned offshore wind power data center component. During the placement operation, the sea conditions are monitored in real time. When the effective wave height at sea is greater than 1.5m, the lowering operation is stopped and the placement operation is resumed after the sea conditions meet the construction requirements. During the placement process, the measurement data of three GNSS receivers are continuously read to monitor the alignment gap between the tip and the steel pipe pile in real time.

9. The GNSS positioning and hoisting installation method for offshore wind power data centers according to claim 8, characterized in that, Step 5 specifically includes: After the data center components were in place, the crane hook remained loaded, and the offshore construction team reached the upper platform of the data center components to carry out the lifting point binding and fixing operation. Using shackles and cables, the four lifting point bases were bound and reinforced to the main steel structure of the data center, transferring the lifting load from the crane hook to the binding structure of the component body. After the binding and fixing were completed, it was confirmed that the binding structure met the safety requirements, and then the crane hook load was released, the LRH polymer slings were removed, and the lifting equipment dismantling operation was completed.

10. The GNSS positioning and hoisting installation method for offshore wind power data centers according to claim 9, characterized in that, Step 6 specifically includes: After the lifting slings were removed, welding personnel began cutting off the sea-binding structure beneath the data center. This sea-binding structure is a steel protective component used to protect the spikes during the land-based prefabrication and transfer phase. It is located beneath the data center components, surrounding the spikes. Welding personnel, equipped with work gear, moved to the work position beneath the data center and used thermal cutting to cut the sea-binding structure in sections. The cutting operation proceeded sequentially in segments, with fall protection measures in place during the cutting process. The cut sea-binding structure fragments were then lifted to the ship's deck using a ship crane. After all the sea-binding structures were removed, the appearance of the data center spikes and steel pipe piles was inspected.

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