A method for designing and constructing a data center connecting a steel cylinder to a submarine utility tunnel.

Abstract

This invention discloses a design and construction method for a data center connecting a steel cylinder to a subsea utility tunnel, belonging to the field of subsea data center construction technology. The invention connects the steel cylinder and the subsea utility tunnel using a dedicated connection structure, and provides a design and construction method for connecting the steel cylinder to the sea surface and the subsea utility tunnel. The data center constructed using this method can facilitate the transfer of personnel and materials between the sea surface and the seabed through the connection between the steel cylinder and the subsea utility tunnel, solving the problem of difficult connection and transfer between subsea data centers and shore-based resources.

Description

Technical Field

[0001] This invention relates to the field of submarine data center construction technology, and in particular to a method for designing and constructing a data center that connects a steel cylinder to a submarine pipe gallery. Background Technology

[0002] Submarine data centers are an important part of "new infrastructure". When constructing them using an underwater corridor structure, it is necessary to solve the problem of connecting the submarine data center with the shore base to enable the access of personnel, vehicles and equipment. At present, there is no construction scheme that can completely solve this problem. At the same time, the project needs to cross sea areas of different depths. The settlement control of various structures under complex geological conditions is a major challenge in the construction of the project, and there is relatively little research on this.

[0003] Starting with the connection between a steel cylinder foundation and a submarine utility tunnel, this paper studies the design and construction methods of data centers, solves the difficult problem of connecting submarine data centers with onshore resources, and proposes a design and construction method for data centers that connects steel cylinders with submarine utility tunnels. This method can effectively address the problem of connecting submarine data centers with onshore infrastructure and has promotional and application value for the construction of submarine data centers. Summary of the Invention

[0004] To overcome the problems existing in the above technologies, the present invention provides a method for designing and constructing a data center connecting a steel cylinder to a submarine utility tunnel, wherein the data center includes:

[0005] Submarine utility tunnel S1; steel cylinder S2; connection structure between steel cylinder and submarine utility tunnel S3; data container S4;

[0006] The subsea utility tunnel S1 comprises: a box-type structure consisting of circular and square sections, with openings on the sides of the tunnel, and connected to the data container via flange connections; the flange connection is a mechanical method for connecting pipes and equipment.

[0007] The steel cylinder S2 includes: a large-diameter steel structure cylinder, with internal partition walls to achieve internal compartment arrangement, which includes: a wave-blocking structure and a vehicle transfer structure;

[0008] The connection structure S3 between the steel cylinder and the submarine pipe gallery includes: the connection is achieved by a combination of flange connection, concave-convex structure, waterstop structure, prestressed cable and anchoring structure.

[0009] The data container S4 includes: the outer shell of the data container is made of high-strength alloy material, and the outer shell is usually spherical or cylindrical, and the interior houses server clusters, data acquisition equipment and drainage pipes.

[0010] Design methods include:

[0011] S10. The steel cylinder is erected and fixed in the seawater. The steel cylinder is divided into compartments, with different functional equipment arranged in different compartments. This ensures that the steel cylinder meets the load requirements of people and vehicles and enables the transfer of people, vehicles, and maintenance equipment. Ballast is achieved by designing a double-layer steel shell with internal concrete pouring. Wave-blocking structures are arranged on the cylindrical structure to ensure the stability of the steel cylinder structure under stress and deformation under marine environment and seismic action. A special connecting structure section is set at an appropriate height where the steel cylinder protrudes from the seabed to connect with the section of the subsea utility tunnel. The design requires that the section of the special connecting structure is consistent with the section of the subsea utility tunnel, and that the diameter of the special connecting structure section is larger than that of the subsea utility tunnel section, while meeting the docking error requirements.

[0012] S20. Through the construction of the subsea pipe gallery's lower foundation and the reinforcement of the subsea pipe gallery connected to the steel cylinder, the overall structure of the subsea pipe gallery is stabilized under stress and deformation in the marine environment and under seismic action. On the basis of overall structural stability, the purpose is to realize all structural design functions of the internal vehicle passage, pipeline passage, ventilation, lighting, and ladder design required for personnel to go up and down.

[0013] S30. After connecting the steel cylindrical structure and the submarine utility tunnel, multiple data cabins are connected to the side of the submarine utility tunnel via flange connections.

[0014] Construction methods include:

[0015] S100: Offshore construction of the steel cylinder; S200: Construction of the subsea pipeline's lower foundation; S300: In-sea installation of the subsea pipeline; S400: Connection construction of the subsea pipeline and the steel cylinder structure; S500: Connection construction of the subsea pipeline and the data container.

[0016] Specifically, the data center also includes: location selection for the data center; wherein, the location of the steel cylinder is selected from a stable soil layer and a gravel foundation; the location of the utility tunnel structure is selected from a geologically continuous and uniform marine area, and the site selection location of the utility tunnel structure is determined by calculating the stratum discontinuity coefficient; the stratum discontinuity coefficient refers to the calculation of the bearing layer location, including sand, clay, and strongly weathered soil, using the length parameter of the utility tunnel structure as the required range, and calculating the long-term settlement assessment parameters through numerical simulation, and taking the seabed range where the long-term settlement assessment parameters meet the construction requirements as the construction location.

[0017] Specifically, the steel cylinder S2 includes: the outer layer of the steel cylinder adopts a double-layer steel shell with internal concrete pouring to achieve ballast; the inner layer is divided into compartments using I-beams and steel plates, and the compartment arrangement also includes elevator shafts and safety elevator shafts to facilitate the transfer of people and goods between the sea surface and the seabed; at the same time, ballast concrete is arranged at the bottom of the outer ballast tank, and ballast water is used for ballast in the upper part to ensure the stability of the steel cylinder in the water.

[0018] Specifically, the steel cylinder S2 further includes: a dedicated connection structure and connection method for connecting with the submarine utility tunnel; firstly, a dedicated connection structure is set at an appropriate height above the seabed of the steel cylinder, the cross-section of the dedicated connection structure is consistent with the cross-section of the submarine utility tunnel, and the cross-section of the dedicated connection structure is larger than the cross-section of the submarine utility tunnel while ensuring that the docking error requirements are met; secondly, the side wall of the dedicated connection structure is aligned with the position of the steel structure partition wall, and a reinforcing structure is arranged between the dedicated connection structure and the outer wall of the steel cylinder to ensure reasonable force transmission and stable transition of force transmission; finally, the dedicated connection structure adopts GINA waterstop and OMEGA waterstop, and has built-in OMEGA waterstop installation parts to realize the installation and connection of the second waterstop; the dedicated connection structure has built-in prestressed cable anchor plates to realize the connection between the dedicated connection structure and the submarine utility tunnel to apply prestress, thereby achieving the purpose of increasing the pressure of the waterstop and stopping water.

[0019] Specifically, the design method further includes: calculating geological reinforcement assessment parameters, designing foundation reinforcement, determining the reinforcement treatment volume for poor foundations, and using these as parameters for scheme optimization; the geological reinforcement assessment parameters are obtained through comprehensive analysis of geological conditions to determine whether reinforcement measures are needed; the assessment and reinforcement methods are as follows: first, calculate the standard deviation parameters for each soil layer; when the standard deviation difference exceeds the standard deviation difference threshold of the engineering standard, the standard deviation is used as input to assess the cost of foundation reinforcement; second, determine the foundation treatment range and reinforcement volume based on the required foundation width and depth, and treat the foundation with crushed stone; when performing mixing treatment, determine parameters including the spacing, depth, and diameter of mixing piles, and determine the total mixing pile reinforcement volume; finally, determine the location of the steel cylinder and pipe gallery based on the reinforcement volume of each type of foundation; generally, areas with low reinforcement volume and cost are selected as the locations of the steel cylinder and pipe gallery.

[0020] Specifically, the process of erecting and fixing the steel cylinder in seawater includes: steel cylinder embedment depth analysis and steel cylinder anti-buoyancy analysis optimization; wherein, the steel cylinder embedment depth analysis includes: calculating the steel cylinder's self-weight, total weight during operation, buoyancy, and pull-out bearing capacity based on preset parameters including the steel cylinder's diameter, thickness, height, and embedment depth, and then calculating the anti-buoyancy coefficient; the steel cylinder's self-weight includes the weight of the underwater-cast concrete used for water-stopping; adjusting the embedment depth until it meets the anti-buoyancy requirements; the steel cylinder anti-buoyancy analysis optimization: firstly, calculating the steel cylinder's embedment depth based on preset steel cylinder structure and steel pile cross-sectional parameters. The design first calculates the average foundation load of the steel cylinder based on its self-weight and ballast parameters. Using the load and ballast as input parameters, the anti-buoyancy coefficient of the steel cylinder is calculated. Next, the compressive and tensile bearing capacities of the steel pile foundation on the outside of the steel cylinder are calculated and divided by the overall self-weight of the steel cylinder to obtain the anti-buoyancy enhancement coefficient. Finally, the anti-buoyancy coefficient and the anti-buoyancy enhancement coefficient are multiplied, and the result is used to determine whether the design meets the preset requirements. The preset requirements refer to preset thresholds obtained based on the safety standards and performance specified in relevant engineering standards and specifications. If the multiplication result is greater than or equal to the preset threshold, it proves that the design meets the safety standards.

[0021] Specifically, the construction method includes: S100, the offshore construction of the steel cylinder includes: S101, drilling holes in the steel cylinder in the factory, and welding the external of the special connecting structure to the pre-set position of the drilled steel cylinder; S102, transporting the steel cylinder to the construction sea area using a large ship, lifting it using a crane ship, and installing multiple vibratory hammers and an integral pounding structure; S103, lifting the steel cylinder to the pre-set position using a crane ship, and pounding it to the pre-set depth on the seabed using vibratory hammers. After pounding, the top of the steel cylinder protrudes above the sea surface, facilitating the transfer of personnel and equipment between the seabed and the surface; S104, removing soil from the steel cylinder to the pre-set depth and pouring underwater concrete. S105. After the underwater concrete reaches the preset standard of solidification strength, extract the water from the steel cylinder for bottom waterproofing construction, and weld the bottom frame beam and bottom steel plate to achieve permanent bottom waterstop; S106. Install the inner wall and partition wall, and install the inner partition compartment wall; the installed wall is composed of I-beams, steel plates and stiffening ribs; S107. Install the special connection structure, install the OMAGA waterstop fixing steel ring and prestressed cable anchor plate to the preset position, and install other auxiliary facilities; S108. Construction of the common bearing and pull-out structure on the outside of the steel cylinder: carry out steel structure pile foundation construction; install the common bearing main beam, and weld the main beam to the steel cylinder and steel piles at the same time; weld and install the secondary beams between the steel piles; S200, the construction of the subsea utility tunnel's lower foundation includes: excavation and piling within the selected area, construction of pile foundations and caissons, concrete pouring, and foundation reinforcement; S300, the underwater installation of the subsea utility tunnel includes: installation using a barge sinking method, with two barges positioned at both ends while the subsea utility tunnel floats in the sea, moored at four points, each equipped with two winches, to sink the subsea utility tunnel to the foundation bed by injecting water in the sea; S400, the connection construction between the subsea utility tunnel and the steel cylinder structure includes: S401, using barge winches to move the subsea utility tunnel on the foundation bed surface, and applying a waterstop to the end face of the steel cylinder's special connection structure to achieve initial waterstopping; S402, the internal construction of the steel cylinder foundation... S403. Pumping water and using a barge to continuously move the waterstop at the end of the subsea utility tunnel to contact the steel cylinder joint. The barge continuously moves the waterstop while applying a preset preload, which is determined by the design pressure, water pressure, construction conditions, and safety factor. S404. Pumping water into the cavity at the joint to further tighten the waterstop using water pressure. S405. After pumping and tightening, using a shore-controlled winch and a ship winch to connect the four anchor points of the subsea utility tunnel end face, continuously applying a preset pressure, and fixing the equipment including the shore-controlled winch and the ship winch to maintain constant pressure and fix the subsea utility tunnel. S406. Removing the special connection structure end face and the subsea utility tunnel end face inside the steel cylinder, and installing the OMEGA waterstop using embedded parts.S406. Install prestressed steel cables for the special connection structure between the subsea utility tunnel and the steel cylinder, and tension the prestress to compress the GINA waterstop to the preset amount; S407. Install shear keys for the subsea utility tunnel and the special connection structure to ensure the overall shear resistance of the subsea utility tunnel and the steel cylinder structure; S500. The connection construction between the subsea utility tunnel and the data container includes: S501. Connecting the subsea utility tunnel and the data container, using methods including welding and bolting to ensure the sealing and stability of the interface; S502. Sealing the connection points to prevent the infiltration of moisture, soil, and other foreign substances; S503. Transporting the container equipment, including the server cluster, ladders, and monitoring equipment, from the sea surface through the steel cylinder, and completing the installation of the container equipment.

[0022] The beneficial effects of this invention are:

[0023] This invention provides a method for designing and constructing a data center by connecting a steel cylinder to a subsea utility tunnel. This method has the following advantages: It provides a method for connecting a large-diameter steel cylinder to a subsea utility tunnel, and also provides a method for designing and constructing a data center based on this connection. The data center constructed using this method allows for easy transfer of personnel and materials through the connection between the steel cylinder and the subsea utility tunnel, solving the problem of connecting subsea data centers to shore-based resources. After the utility tunnel is connected, server clusters and other equipment can be transported from the steel cylinder sea surface to the utility tunnel and installed, which is safer than installing equipment in advance within the tunnel. Attached Figure Description

[0024] Figure 1 : A schematic diagram of the data center composition of this invention.

[0025] Figure 2 : Flowchart of the design method of this invention.

[0026] Figure 3 : Flowchart of the construction method of the present invention. Detailed Implementation

[0027] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] like Figure 1 The diagram shows the composition of the data center of the present invention; the diagram includes: a submarine pipe gallery S1; a steel cylinder S2; a connection structure between the steel cylinder and the submarine pipe gallery S3; and a data container S4.

[0029] In the above embodiments, specifically, the submarine utility tunnel S1 includes: the submarine utility tunnel is composed of a box structure including circular and square shapes, with openings on the side of the tunnel, and is connected to the data container through the openings using a flange connection; the flange connection is a mechanical method for connecting pipes and equipment.

[0030] In the above embodiment, specifically, the steel cylinder S2 includes: a large-diameter steel structure cylinder, and the internal compartment arrangement is achieved by using partition walls inside the steel cylinder structure, which includes: a wave-blocking structure and a vehicle transfer structure.

[0031] In the above embodiments, specifically, the connection structure S3 between the steel cylinder and the submarine pipe gallery includes: the connection is achieved by a combination of flange connection, concave-convex structure, waterstop structure, prestressed cable and anchoring structure.

[0032] In the above embodiments, specifically, the data cabin S4 includes: the outer shell of the data cabin is made of high-strength alloy material, and the outer shell is usually spherical and cylindrical, and the interior contains server clusters, data acquisition equipment and drainage pipes.

[0033] In the above embodiments, specifically, the data center further includes: location selection of the data center; wherein, the location of the steel cylinder is selected from a stable soil layer and a gravel foundation; the location of the utility tunnel structure is selected from a geologically continuous and uniform marine area, and the site selection location of the utility tunnel structure is determined by calculating the stratum discontinuity coefficient; the stratum discontinuity coefficient refers to the calculation of the bearing layer location including sand, clay and strongly weathered soil, using the length parameter of the utility tunnel structure as the required range, and calculating the long-term settlement assessment parameters through numerical simulation, and taking the seabed range where the long-term settlement assessment parameters meet the construction requirements as the construction location.

[0034] In the above embodiments, specifically, the steel cylinder S2 includes: the outer layer of the steel cylinder adopts a double-layer steel shell with internal concrete pouring to achieve ballast; the inner layer is divided into compartments using I-beams and steel plates, and the compartment arrangement also includes elevator shafts and safety elevator shafts to facilitate the transfer of people and goods between the sea surface and the seabed; at the same time, ballast concrete is arranged at the bottom of the outer ballast tank, and ballast water is used for ballast in the upper part to ensure the stability of the steel cylinder in the water.

[0035] In the above embodiments, specifically, a dedicated connection structure and connection method for connecting with the subsea utility tunnel are arranged. First, a dedicated connection structure is set at an appropriate height above the seabed where the steel cylinder protrudes. The cross-section of the dedicated connection structure is consistent with the cross-section of the subsea utility tunnel, and the cross-section of the dedicated connection structure is larger than that of the subsea utility tunnel while ensuring that the docking error requirements are met. Second, the side wall of the dedicated connection structure is aligned with the position of the steel structure partition wall, and a reinforcing structure is arranged between the dedicated connection structure and the outer wall of the steel cylinder to ensure reasonable force transmission and stable transition of force transmission. Finally, the dedicated connection structure uses GINA and OMEGA waterstops, and incorporates OMEGA waterstop installation components to achieve the installation and connection of the second waterstop. The dedicated connection structure incorporates prestressed cable anchor plates to apply prestress to the connection between the dedicated connection structure and the subsea utility tunnel, thereby enhancing the pressure of the waterstop and achieving the purpose of water stoppage.

[0036] In the above embodiments, preferably, a channel is opened at an appropriate height where the steel cylinder protrudes from the seabed. A dedicated connecting structure is arranged through this channel. After the dedicated connecting structure is connected to one end of the subsea utility tunnel, it does not affect the fixation of the subsea utility tunnel to the seabed, ensuring the stability of the subsea utility tunnel. The dedicated connecting structure can be set as a hatch connecting the steel cylinder and the subsea utility tunnel, or it can be set as a connection between the steel cylinder and the subsea utility tunnel through a shorter channel. Waterproofing is done with GINA and OMEGA waterstops to ensure the safety of the hatch and channel after connection.

[0037] like Figure 2 The diagram shows a flowchart of the design method of this invention. The flowchart includes: S10, erecting and fixing the steel cylinder in seawater, dividing the steel cylinder into compartments, arranging equipment with different functions in different compartments, so that the steel cylinder meets the load requirements of people and vehicles, and realizes the transfer function of people, vehicles, and maintenance equipment; ballast is achieved by designing a double-layer steel shell with internal concrete pouring, and wave-breaking structures are arranged on the cylindrical structure to ensure the stability of the steel cylinder structure under stress and deformation under marine environment and seismic action; a dedicated connecting structure section is set at an appropriate height above the seabed of the steel cylinder to connect with the submarine utility tunnel section, and the design requires the dedicated connecting structure section to connect with the submarine utility tunnel section... The surfaces are consistent, and while meeting the docking error requirements, the cross-section of the dedicated connection structure is larger than the cross-section diameter of the submarine utility tunnel; S20, through the construction of the lower foundation of the submarine utility tunnel and the reinforcement operation of the submarine utility tunnel after it is connected to the steel cylinder, the overall structure of the submarine utility tunnel is stabilized under the stress and deformation of the marine environment and seismic action. On the basis of overall structural stability, the purpose of all structural design functions of the internal vehicle passage, pipeline passage, ventilation, lighting functions and the ladder design required for personnel to go up and down is realized; S30, after connecting the steel cylinder structure and the submarine utility tunnel, multiple data cabins are connected to the side of the submarine utility tunnel by flange connection.

[0038] In the above embodiments, specifically, the design method further includes: calculating geological reinforcement assessment parameters, designing foundation reinforcement, determining the reinforcement treatment amount for poor foundations, and using these as parameters for scheme optimization; the geological reinforcement assessment parameters are obtained by comprehensively analyzing geological conditions to determine whether reinforcement measures are needed; the assessment and reinforcement methods are as follows: first, calculating the standard deviation parameters of each soil layer; when the standard deviation difference exceeds the standard deviation difference threshold of the engineering standard, the standard deviation is used as input to assess the cost of foundation reinforcement; second, determining the foundation treatment range and reinforcement amount based on the required foundation width and depth, and treating the foundation with crushed stone; when performing mixing treatment, determining parameters including the spacing, depth, and diameter of mixing piles, and determining the total mixing pile reinforcement amount; finally, determining the location of the steel cylinder and pipe gallery based on the reinforcement amount of each type of foundation; generally, areas with low reinforcement amount and low reinforcement cost are selected as the locations of the steel cylinder and pipe gallery.

[0039] In the above embodiments, specifically, erecting and fixing the steel cylinder in seawater includes: steel cylinder embedment depth analysis and steel cylinder anti-buoyancy analysis optimization; wherein, the steel cylinder embedment depth analysis includes: calculating the steel cylinder's self-weight, total weight during operation, buoyancy, and pull-out bearing capacity based on preset parameters including the steel cylinder's diameter, thickness, height, and embedment depth, and then calculating the anti-buoyancy coefficient; the steel cylinder's self-weight includes the weight of the underwater-cast concrete used for water-stopping; adjusting the embedment depth until it meets the anti-buoyancy requirements; the steel cylinder anti-buoyancy analysis optimization: firstly, calculating based on preset steel cylinder structure and steel pile cross-sectional parameters. The design employs several methods: First, it calculates the average foundation load of the steel cylinder based on its self-weight and ballast parameters. Using the load and ballast as input parameters, it calculates the anti-buoyancy coefficient of the steel cylinder. Second, it calculates the compressive and tensile bearing capacities of the steel pile foundation on the outside of the steel cylinder, dividing these capacities by the overall self-weight of the steel cylinder to obtain the anti-buoyancy enhancement coefficient. Finally, it multiplies the anti-buoyancy coefficient and the anti-buoyancy enhancement coefficient, and determines whether the result meets the preset requirements. These preset requirements refer to preset thresholds based on safety standards and performance specifications stipulated in relevant engineering standards and regulations. If the multiplication result is greater than or equal to the preset threshold, the design is deemed to meet safety standards.

[0040] like Figure 3 The diagram shows a flowchart of the construction method of the present invention. The flowchart includes: S100, realizing the offshore construction of the steel cylinder; S200, realizing the construction of the lower foundation of the submarine utility tunnel; S300, realizing the underwater installation of the submarine utility tunnel; S400, the connection construction of the submarine utility tunnel and the steel cylinder structure; S500, the connection construction of the submarine utility tunnel and the data container.

[0041] In the above embodiment, specifically, S100, realizing the offshore construction of the steel cylinder includes: S101, drilling holes in the steel cylinder in the factory, and welding the external of the special connecting structure to the pre-set position of the drilled steel cylinder by welding the butt joint of the special connecting structure to the pre-set position of the drilled steel cylinder; S102, transporting the steel cylinder to the construction sea area using a large ship, lifting it using a crane ship, and installing multiple vibratory hammers and an integral replacement structure; S103, lifting the steel cylinder to the pre-set position by the crane ship, and pounding it to the pre-set depth on the seabed using vibratory hammers. After pounding, the top of the steel cylinder protrudes above the sea surface, facilitating the transfer of personnel and equipment between the seabed and the sea surface; S104, extracting soil to the pre-set depth inside the steel cylinder and pouring underwater concrete. S105. After the underwater concrete reaches the preset standard of solidification strength, the water in the steel cylinder is extracted for bottom waterproofing construction, and the bottom frame beam and bottom steel plate are welded to achieve permanent bottom water stop; S106. The inner wall and partition wall are installed, and the inner partition compartment wall is installed; the installed wall is composed of I-beams, steel plates and stiffening ribs; S107. The special connection structure is installed, and the OMAGA waterstop fixing steel ring and prestressed cable anchor plate are installed in the preset positions, and other auxiliary facilities are installed; S108. Construction of the common bearing and pull-out structure on the outside of the steel cylinder: the steel structure pile foundation is constructed; the common bearing main beam is installed, and the main beam is welded to the steel cylinder and steel piles at the same time; the secondary beams between the steel piles are welded and installed.

[0042] In the above embodiments, specifically, S200, the construction of the lower foundation of the submarine utility tunnel includes: excavating and driving piles in the selected area, constructing pile foundations and caissons, pouring concrete, and reinforcing the foundation.

[0043] In the above embodiment, specifically, S300, realizing the underwater installation of the submarine utility tunnel, includes: using the barge sinking method for installation. When the submarine utility tunnel is floating in the sea, two barges are arranged at both ends. The barges are moored at four points in the sea, and two winches are arranged at each point to realize the underwater installation of the submarine utility tunnel into the foundation bed by injecting water in the sea.

[0044] In the above embodiment, specifically, the connection construction of S400, the submarine pipe gallery and the steel cylinder structure includes: S401, using a barge to move the submarine pipe gallery on the foundation surface, and pressing the waterstop onto the end face of the special connection structure of the steel cylinder to achieve initial waterstopping; S402, pumping water out of the steel cylinder foundation, and using the barge to continuously move the submarine pipe gallery end face waterstop to contact the steel cylinder butt end, applying a preset preload using the barge to continuously move the steel cylinder, the preset preload being determined by the design pressure, water pressure, construction conditions and safety factor; S403, pumping water out of the cavity at the butt end, and using water pressure to further tighten the waterstop; S404 After pumping and compaction, the four anchor points connecting the end face of the subsea utility tunnel, including shore-controlled winches and ship winches, are used to continuously apply the preset pressure and fix the equipment including shore-controlled winches and ship winches, maintaining constant pressure to secure the subsea utility tunnel; S405, the end face of the special connection structure and the end face of the subsea utility tunnel are removed inside the steel cylinder, and the OMEGA waterstop is installed through embedded parts; S406, the prestressed steel cable connection between the subsea utility tunnel and the special connection structure of the steel cylinder is installed, and the prestress is tensioned to compress the GINA waterstop to the preset amount; S407, the shear keys of the subsea utility tunnel and the special connection structure are installed to ensure the overall shear resistance of the subsea utility tunnel and the steel cylinder structure.

[0045] In the above embodiment, specifically, the connection construction of S500, the submarine pipeline and the data container includes: S501, docking the submarine pipeline and the data container, using methods including welding and bolting to ensure the sealing and stability of the interface; S502, sealing the connection points to prevent the infiltration of moisture, soil and other foreign substances; S503, transporting the container equipment, including the server cluster, ladder and monitoring equipment, from the sea surface through a steel cylinder, and completing the installation of the container equipment.

[0046] In the above embodiments, preferably, the data center composed of the steel cylinder, subsea pipe gallery, and data container of the present invention allows vehicles, personnel, and related equipment to be transported to the seabed via an elevator through the steel cylinder entrance on the sea surface. Then, server clusters and other equipment are transported to the data container via the subsea pipe gallery through the docking channel. During the operation of the data container, staff can enter the subsea data container from the sea surface through the steel cylinder at any time to confirm its normal operation. Therefore, the present invention establishes a connection from the sea surface to the subsea data container through the connection of the steel cylinder and the subsea pipe gallery, realizing the connection between the subsea data center and shore-based resources, thus simplifying equipment transportation, personnel transfer, and equipment maintenance of the subsea data container.

[0047] 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 based on the present invention; any variations and modifications made by those skilled in the art through the present invention without making pioneering innovations are all within the protection scope of the present invention.

Claims

1. A method for designing and constructing a data center connecting a steel cylinder to a submarine utility tunnel, characterized in that, The data center includes: Submarine utility tunnel S1; steel cylinder S2; connection structure between steel cylinder and submarine utility tunnel S3; data container S4; The subsea utility tunnel S1 comprises: a box-type structure consisting of circular and square sections, with openings on the sides of the tunnel, and connected to the data container via flange connections; the flange connection is a mechanical method for connecting pipes and equipment. The steel cylinder S2 includes: a large-diameter steel structure cylinder, with internal partition walls to achieve internal compartment arrangement, which includes: a wave-blocking structure and a vehicle transfer structure; The connection structure S3 between the steel cylinder and the submarine pipe gallery includes: the connection is achieved by a combination of flange connection, concave-convex structure, waterstop structure, prestressed cable and anchoring structure. The data container S4 includes: the outer shell of the data container is made of high-strength alloy material, and the outer shell is spherical and cylindrical, and the interior contains server clusters, data acquisition equipment and drainage pipes; Design methods include: S10. The steel cylinder is erected and fixed in the seawater. The steel cylinder is divided into compartments, with different functional equipment arranged in different compartments. This ensures that the steel cylinder meets the load requirements of people and vehicles and enables the transfer of people, vehicles, and maintenance equipment. Ballast is achieved by designing a double-layer steel shell with internal concrete pouring. Wave-blocking structures are arranged on the cylindrical structure to ensure the stability of the steel cylinder structure under stress and deformation under marine environment and seismic action. A special connecting structure section is set at an appropriate height where the steel cylinder protrudes from the seabed to connect with the section of the subsea utility tunnel. The design requires that the section of the special connecting structure is consistent with the section of the subsea utility tunnel, and that the diameter of the special connecting structure section is larger than that of the subsea utility tunnel section, while meeting the docking error requirements. S20. Through the construction of the subsea pipe gallery's lower foundation and the reinforcement of the subsea pipe gallery connected to the steel cylinder, the overall structure of the subsea pipe gallery is stabilized under stress and deformation in the marine environment and under seismic action. On the basis of overall structural stability, the purpose is to realize all structural design functions of the internal vehicle passage, pipeline passage, ventilation, lighting, and ladder design required for personnel to go up and down. S30. After connecting the steel cylindrical structure and the submarine utility tunnel, multiple data cabins are connected to the side of the submarine utility tunnel via flange connections. Construction methods include: S100: Offshore construction of the steel cylinder; S200: Construction of the subsea pipeline's lower foundation; S300: In-sea installation of the subsea pipeline; S400: Connection construction of the subsea pipeline and the steel cylinder structure; S500: Connection construction of the subsea pipeline and the data container.

2. The data center design and construction method for connecting a steel cylinder to a submarine pipe gallery according to claim 1, characterized in that, The data center also includes: location selection; wherein, the location of the steel cylinder is selected from a stable soil layer and a gravel foundation; the location of the utility tunnel structure is selected from a geologically continuous and uniform marine area, and the site selection location of the utility tunnel structure is determined by calculating the stratum discontinuity coefficient; the stratum discontinuity coefficient refers to the calculation of the bearing layer location including sand, clay and strongly weathered soil, using the length parameter of the utility tunnel structure as the required range, and calculating the long-term settlement assessment parameters through numerical simulation, and taking the seabed range where the long-term settlement assessment parameters meet the construction requirements as the construction location.

3. The data center design and construction method for connecting a steel cylinder to a submarine pipe gallery according to claim 1, characterized in that, The steel cylinder S2 includes: the outer layer of the steel cylinder adopts a double-layer steel shell with internal concrete pouring to achieve ballast; the inner layer is divided into compartments using I-beams and steel plates, and the compartment layout also includes elevator shafts and safety elevator shafts to facilitate the transfer of people and goods between the sea surface and the seabed; at the same time, ballast concrete is arranged at the bottom of the outer ballast tank, and ballast water is used for ballast in the upper part to ensure the stability of the steel cylinder in the water.

4. The data center design and construction method for connecting a steel cylinder to a submarine pipe gallery according to claim 1, characterized in that, The steel cylinder S2 also includes: a dedicated connection structure and connection method for connecting with the subsea utility tunnel; firstly, a dedicated connection structure is set at an appropriate height above the seabed of the steel cylinder, with the cross-section of the dedicated connection structure consistent with the cross-section of the subsea utility tunnel, and the cross-section of the dedicated connection structure is larger than that of the subsea utility tunnel while ensuring that the docking error requirements are met; secondly, the side wall of the dedicated connection structure is aligned with the position of the steel structure partition wall, and a reinforcing structure is arranged between the dedicated connection structure and the outer wall of the steel cylinder to ensure reasonable force transmission and stable transition of force transmission; finally, the dedicated connection structure adopts GINA waterstop and OMEGA waterstop, and has built-in OMEGA waterstop installation parts to realize the installation and connection of the second waterstop; the dedicated connection structure has built-in prestressed cable anchor plates to realize the connection between the dedicated connection structure and the subsea utility tunnel to apply prestress, thereby achieving the purpose of increasing the pressure of the waterstop and stopping water.

5. The data center design and construction method for connecting a steel cylinder to a submarine pipe gallery according to claim 1, characterized in that, The design method further includes: calculating geological reinforcement assessment parameters, designing foundation reinforcement, determining the reinforcement treatment volume of poor foundations, and using these as parameters for scheme optimization; the geological reinforcement assessment parameters are obtained by comprehensively analyzing geological conditions to determine whether reinforcement measures are needed; the assessment and reinforcement methods are as follows: first, calculating the standard deviation parameters of each soil layer; when the standard deviation difference exceeds the standard deviation difference threshold of the engineering standard, the standard deviation is used as input to assess the cost of foundation reinforcement; second, determining the foundation treatment range and reinforcement volume based on the required foundation width and depth, and treating the foundation with crushed stone; when performing mixing treatment, determining parameters including the spacing, depth, and diameter of mixing piles, and determining the total mixing pile reinforcement volume; finally, determining the location of steel cylinders and pipe racks based on the reinforcement volume of each type of foundation; selecting areas with low reinforcement volume and cost as the locations of steel cylinders and pipe racks.

6. The data center design and construction method for connecting a steel cylinder to a submarine pipe gallery according to claim 1, characterized in that, The process of erecting and fixing the steel cylinder in seawater includes: steel cylinder embedment depth analysis and steel cylinder anti-buoyancy analysis optimization; wherein, the steel cylinder embedment depth analysis includes: calculating the steel cylinder's self-weight, total weight during operation, buoyancy, and pull-out bearing capacity based on preset parameters including the steel cylinder's diameter, thickness, height, and embedment depth, and then calculating the anti-buoyancy coefficient; the steel cylinder's self-weight includes the weight of the underwater-cast concrete used for water-stopping; adjusting the embedment depth until it meets the anti-buoyancy requirements; the steel cylinder anti-buoyancy analysis optimization: firstly, based on preset steel cylinder structure and steel pile cross-sectional parameters, calculating the steel cylinder's self-weight... The average foundation load of the steel cylinder is calculated using the weight and ballast parameters. Using the load and ballast as input parameters, the anti-buoyancy coefficient of the steel cylinder is calculated. Next, the compressive and tensile bearing capacities of the steel pile foundation on the outside of the steel cylinder are calculated and divided by the overall self-weight of the steel cylinder to obtain the anti-buoyancy enhancement coefficient. Finally, the anti-buoyancy coefficient and the anti-buoyancy enhancement coefficient are multiplied, and the result is used to determine whether the preset requirements are met. The preset requirements refer to preset thresholds obtained based on safety standards and performance specifications stipulated in relevant engineering standards and regulations. If the multiplication result is greater than or equal to the preset threshold, it proves that the design meets safety standards.

7. The data center design and construction method for connecting a steel cylinder to a submarine pipe gallery according to claim 1, characterized in that, The construction method includes: S100, the offshore construction of the steel cylinder includes: S101, drilling holes in the steel cylinder in the factory, and welding the external of the special connecting structure to the pre-set position of the drilled steel cylinder; S102, transporting the steel cylinder to the construction sea area using a large vessel, hoisting it using a crane vessel, and installing multiple vibratory hammers and an integral tamping structure; S103, lifting the steel cylinder to the pre-set position using a crane vessel, and tamping it to the pre-set depth on the seabed using vibratory hammers. After tamping, the top of the steel cylinder protrudes above the sea surface, facilitating the transfer of personnel and equipment between the seabed and the surface; S104, removing soil from the steel cylinder to the pre-set depth and pouring underwater concrete; S10 5. After the underwater concrete reaches the preset standard of solidification strength, the water in the steel cylinder is extracted for bottom waterproofing construction, and the bottom frame beam and bottom steel plate are welded to achieve permanent bottom water stop; S106. The inner wall and partition wall are installed, and the inner partition compartment wall is installed; the installed wall is composed of I-beams, steel plates and stiffening ribs; S107. The special connection structure is installed, and the OMAGA waterstop fixing steel ring and prestressed cable anchor plate are installed in the preset positions, and other auxiliary facilities are installed; S108. Construction of the common bearing and pull-out structure on the outside of the steel cylinder: the steel structure pile foundation is constructed; the common bearing main beam is installed, and the main beam is simultaneously welded to the steel cylinder and steel piles; the secondary beams between the steel piles are welded and installed; the above S 200. Construction of the subsea pipeline's lower foundation includes: excavation and piling within the selected area, construction of pile foundations and caissons, concrete pouring, and foundation reinforcement; S300. Installation of the subsea pipeline in the sea includes: installation using a barge sinking method. While the subsea pipeline floats in the sea, two barges are positioned at both ends, moored at four points, each equipped with two winches, to sink the subsea pipeline to the foundation bed by injecting water in the sea; S400. Connection construction between the subsea pipeline and the steel cylinder structure includes: S401. Using barges to move the subsea pipeline on the foundation bed surface, and applying a waterstop to the end face of the steel cylinder's special connection structure to achieve initial waterstopping; S402. Internal extraction of the steel cylinder foundation... Water is used to continuously move the subsea utility tunnel end face waterstop to the steel cylinder docking end, and the barge continuously moves the tunnel while applying a preset preload, which is determined by the design pressure, water pressure, construction conditions and safety factor; S403, water is pumped out of the cavity at the docking end to further tighten the waterstop; S404, after the water pumping and tightening is completed, the four anchor points of the subsea utility tunnel end face are connected by shore-controlled winches and ship winches, and the preset pressure is continuously applied and the equipment including shore-controlled winches and ship winches is fixed to keep the pressure constant and fix the subsea utility tunnel; S405, the special connection structure end face and the subsea utility tunnel end face are removed inside the steel cylinder, and the OMEGA waterstop is installed through the embedded parts;S406. Install prestressed steel cables for the special connection structure between the subsea utility tunnel and the steel cylinder, and tension the prestress to compress the GINA waterstop to the preset amount; S407. Install shear keys for the subsea utility tunnel and the special connection structure to ensure the overall shear resistance of the subsea utility tunnel and the steel cylinder structure; S500. The connection construction between the subsea utility tunnel and the data container includes: S501. Connecting the subsea utility tunnel and the data container, using methods including welding and bolting to ensure the sealing and stability of the interface; S502. Sealing the connection points to prevent the infiltration of moisture, soil, and other foreign substances; S503. Transporting the container equipment, including the server cluster, ladders, and monitoring equipment, from the sea surface through the steel cylinder, and completing the installation of the container equipment.

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