Wind power concrete switching section upper anchor plate installation method

Abstract

The invention discloses a mounting method for an upper anchor plate of a wind power concrete switching section. The mounting method comprises the following steps that S1, the upper anchor plate is manufactured; the upper anchor plate is in an annular flat plate shape, and a plurality of upper anchoring connecting holes and a plurality of exhaust holes are formed in the upper anchor plate at intervals. S2, a concrete transfer section is manufactured; the concrete switching section comprises a concrete base body, a steel reinforcement framework and a plurality of anchor rods; s3, fixing an upper anchor plate; s4, a formwork is erected; the inner ring and the outer ring of the upper portion of the concrete base body are enclosed by a formwork, a grouting space is formed among the formwork, the concrete base body and the upper anchor plate, and a grouting channel is formed between the upper anchor plate and the formwork; and S5, grouting construction is conducted, the upper surface of the grouting material is flush with the upper surface of the upper anchor plate, and a flat pressure bearing plane is formed. The structural integrity can be improved, the problem that grouting is not compact due to gas blocking is solved, and collision and sliding between the tower drum section and the upper anchor plate in the steel tower drum installation process can be prevented.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a method for installing anchor plates on a concrete transition section of a wind turbine. Background Technology

[0002] Wind turbine hybrid tower structures typically combine a lower concrete tower and an upper steel tower. To ensure the reliability of the connection between the concrete and steel towers, a transition section with an upper anchor plate can be installed between them. The lower end of the transition section connects to the concrete tower, and the upper end connects to the steel tower via the upper anchor plate. For example, patent CN114962181A discloses a wind turbine hybrid tower transition ring and its upper anchor plate installation method. This wind turbine hybrid tower transition ring includes a transition ring body. A secondary grouting groove is provided on the top surface of the transition ring body. The secondary grouting groove is annular and concentrically arranged with the transition ring body. A secondary casting body and an annular upper anchor plate are provided within the secondary grouting groove. Leveling bolts are provided at the inner and outer edges of the upper anchor plate, evenly spaced along the circumference of the upper anchor plate. The leveling bolts are used to level the upper anchor plate. The upper anchor plate is fixed to the transition ring body by casting with the secondary casting body. The transition ring has connecting holes penetrating the transition ring body and the upper anchor plate, and anchor holes for inserting prestressing tendons. The connecting holes and anchor holes are spaced apart along the circumference of the transition ring body. This method can improve the flatness of the upper anchor plate of the transition ring and reduce the risk of honeycomb pitting and laitance at the junction of the bottom of the upper anchor plate and the concrete. Undoubtedly, the technical solution disclosed in the above patent document is a beneficial attempt in the relevant technical field. However, it has the following shortcomings: 1. The secondary casting body is formed by a secondary grouting groove. The structure of this grouting groove results in a limited bonding area between the grout and the reinforced concrete structure of the upper anchor plate and the transition ring body, and poor overall integrity; 2. The protruding upper anchor plate is prone to collision and slippage when installing the steel tower; 3. The venting is not smooth during the grouting process, and voids are easily formed between the upper anchor plate and the transition ring body. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a method for installing the upper anchor plate of the concrete transition section of wind power, which can improve the overall structure, prevent the problem of insufficient grouting caused by air blockage, and also prevent collision and slippage between the tower section and the upper anchor plate during the installation of the steel tower.

[0004] The present invention discloses a method for installing anchor plates on concrete transition sections of wind turbines, comprising the following steps: S1. Manufacturing an upper anchor plate; the upper anchor plate is in the shape of an annular flat plate, and the upper anchor plate is provided with a plurality of upper anchoring connection holes and a plurality of venting holes at intervals; S2. Manufacturing a concrete transition section; the concrete transition section includes a concrete substrate, a reinforcing steel skeleton, and multiple anchor rods; the concrete substrate is annular, and the distance between the inner and outer rings of the concrete substrate is greater than the distance between the inner and outer rings of the upper anchor plate; the reinforcing steel skeleton is embedded inside the concrete substrate, and the upper end of the reinforcing steel skeleton extends upward and is exposed outside the concrete substrate; multiple anchor rods are spaced circumferentially inside the concrete substrate, and the upper ends of multiple anchor rods extend upward and are exposed outside the concrete substrate; S3. Fix the upper anchor plate; connect each upper anchoring connection hole of the upper anchor plate to the upper end of each anchor rod respectively, and the upper anchor plate is arranged horizontally and at intervals above the concrete substrate; S4. Erect the formwork; enclose the inner and outer rings of the upper part of the concrete substrate with the formwork, and form a grouting space between the formwork, the concrete substrate and the upper anchor plate, and form a grouting channel between the upper anchor plate and the formwork; S5. Grouting construction: Grouting material is injected into the grouting space through the grouting channel until the grouting material overflows evenly from all vent holes; during the injection process, the injection amount of the grouting material is controlled so that the upper surface of the grouting material is flush with the upper surface of the upper anchor plate to form a flat pressure-bearing plane.

[0005] This setting will achieve the following effect: 1. Eradicate persistent grouting problems and ensure compactness. By pre-setting reasonably distributed vent holes on the upper anchor plate, a dedicated channel for air to escape during the grouting process is provided, solving the problem of incomplete grouting caused by air blockage and ensuring the integrity and reliability of the load transfer path.

[0006] 2. The upper anchor plate is firmly fixed, and the installation benchmark is precise. The design of the upper surface of the anchor plate being flush with the upper surface of the grouting material allows the upper anchor plate to be three-dimensionally wrapped and embedded by the high-performance grouting material, forming an "embedded" anchor, effectively resisting the risks of collision and slippage during construction. At the same time, this design provides an extremely high plane benchmark for the installation of the upper steel tower, improving installation accuracy. In addition, the upper anchor plate does not protrude upwards, which can prevent collision and slippage between the tower section and the upper anchor plate during the installation of the steel tower.

[0007] 3. Excellent overall integrity and strong crack resistance. Abandoning traditional grouting trenches, a monolithic grouting scheme is adopted at the top of the concrete transition section, allowing the grout to bond with the concrete matrix into a large-volume integral bearing pad. This not only greatly increases the effective bearing and bonding area but also evenly distributes the concentrated load transmitted by the upper steel tower, significantly reducing stress concentration and cracking risk in the concrete transition section.

[0008] 4. The lower concrete substrate and the grout above it work together to bear the load, extending the structural lifespan. The upper end of the reinforcing steel cage extends upward and is exposed in the concrete substrate, extending into the grout like a "structural root system," firmly anchoring the lower concrete substrate and the grout above it together. This achieves a rigid transition from reinforced concrete to grout and then to the upper anchor plate, greatly enhancing the overall stiffness, fatigue resistance, and long-term durability of the connection joint.

[0009] 5. Simplified process and significant overall benefits. Eliminating the need to excavate grouting trenches simplifies the design and fabrication of precast templates, reduces on-site construction steps, significantly shortens the production cycle, lowers labor and material costs, optimizes the entire production process, and yields obvious economic benefits.

[0010] Furthermore, it also includes the following steps: S6, curing and acceptance; after grouting is completed, moisturizing curing is carried out; during the curing period and after the curing period, the grouting density is verified by non-destructive testing methods, and the final levelness and planar position of the upper anchor plate are checked.

[0011] This setup further ensures that the final levelness and planar position of the upper anchor plate meet the design requirements, and ensures that the upper surface of the grouting material is flush with the upper surface of the upper anchor plate, forming a flat bearing surface.

[0012] Furthermore, in step S1, the upper anchor plate has anchor foot connection holes with the openings facing downwards; in step S3, an anchor foot is first installed on each of the anchor foot connection holes before the upper anchor plate is fixed.

[0013] This setup can further increase the connection strength between the upper anchor plate and the grout through the anchor feet, thereby further improving the connection reliability and integrity of the upper anchor plate, grout, and concrete transition section.

[0014] Furthermore, multiple upper anchoring connection holes are circumferentially spaced on the upper anchor plate; the vent holes are arranged in three concentric circles radially, with each vent hole in the first circle located between the inner circle of the upper anchor plate and the upper anchoring connection hole, the axis of each vent hole in the second circle being located on the same cylindrical surface as the axis of each upper anchoring connection hole, and each vent hole in the third circle being located between the outer circle of the upper anchor plate and the upper anchoring connection hole.

[0015] This design ensures that the vent holes are evenly distributed, providing air discharge channels between the upper anchoring connection holes, on the inner side of the upper anchoring connection holes, and on the outer side of the upper anchoring connection holes, thus guaranteeing that the grouting at each location is dense.

[0016] Furthermore, in S2, the concrete transition section also includes a lower anchor plate, which is an annular flat plate. The lower anchor plate is provided with a plurality of lower anchoring connection holes spaced apart, and the position of each lower anchoring connection hole corresponds one-to-one with the position of each upper anchoring connection hole; the lower end of each anchor rod is connected to the lower anchor plate.

[0017] This setup serves two purposes. First, during the construction of the concrete transition section, multiple anchor rods and steel reinforcement cages act as embedded structures for concrete pouring, with the lower anchor plate ensuring the height and verticality of each anchor rod. Second, after grouting, the upper anchor plate connects with the grout, and the lower anchor plate is horizontally embedded in the concrete matrix. The upper and lower anchor plates are then connected by multiple anchor rods, further enhancing the reliability and integrity of the connection between the upper anchor plate, grout, and the concrete transition section.

[0018] Furthermore, the anchor rod is a double-ended screw or a threaded rod. The upper and lower sides of the upper anchor plate are respectively provided with upper nuts and washer assemblies corresponding to the positions of each of the upper anchoring connection holes. The upper and lower sides of the lower anchor plate are respectively provided with lower nuts and washer assemblies corresponding to the positions of each of the lower anchoring connection holes. The upper and lower ends of the double-ended screw or threaded rod are respectively connected to the upper nut and washer assembly and the lower nut and washer assembly.

[0019] This configuration allows for precise positioning and locking of the upper anchor plate during fixing. The lower nut and washer assembly provides a locking limit, while the upper nut and washer assembly provides a locking limit, enabling position adjustment of the upper anchor plate and ensuring its levelness and accurate planar positioning. When connecting each anchor rod to the lower anchor plate, the lower nuts and washer assemblies on both sides of the lower anchor plate change the relative position and lock the position of the anchor rods, ensuring accurate positioning of each anchor rod.

[0020] Furthermore, the central axes of the upper anchor plate, the lower anchor plate, and the concrete substrate coincide; the axes of each anchor rod are located on the same cylindrical surface, and the central axis of the cylindrical surface coincides with the central axis of the concrete substrate.

[0021] This configuration allows for a more even and balanced distribution of force.

[0022] Furthermore, in S2, the concrete transition section further includes multiple prestressed cable sleeves, which are arranged vertically inside the concrete matrix and spaced circumferentially. The radial positions of the multiple prestressed cable sleeves are located between the inner circle of the concrete matrix and the upper anchor plate. The upper ends of each prestressed cable sleeve extend upwards out of the concrete matrix, and each prestressed cable sleeve is provided with a prestressing pad at its upper end. The upper surface of the prestressing pad is flush with the upper surface of the upper anchor plate in S5.

[0023] With this configuration, the prestressed cable sleeve can provide a passage for the prestressed cables (i.e., prestressed steel strands) of the wind turbine tower to pass through, and the prestressed pad can provide support for the upper installation structure of the prestressed cables.

[0024] Furthermore, in S2, the concrete transition section also includes a plurality of spiral bars, each of which is located below each of the prestressed pads and is respectively sleeved on each of the prestressed cable sleeves; the plurality of spiral bars are embedded in the interior of the concrete matrix, with their upper ends extending upward and exposed outside the concrete matrix.

[0025] This design serves two purposes: firstly, the spiral reinforcement increases the compressive strength of the concrete mass beneath the prestressed pad, thus providing reliable support for the upper installation structure of the prestressed cables; secondly, the spiral reinforcement further enhances the reliability and integrity of the connection between the concrete matrix and the grouting material.

[0026] Furthermore, in S2, at least some of the steel bars of the steel reinforcement cage have a gap between them and the upper surface of the concrete substrate.

[0027] With this configuration, the gap between the uppermost steel bar of the steel reinforcement cage and the concrete matrix will be filled with grout, thereby improving the reliability of the connection between the grout and the upper end of the steel reinforcement cage.

[0028] The beneficial effects of this invention are: 1. Eradicate persistent grouting problems and ensure compactness. By pre-setting reasonably distributed vent holes on the upper anchor plate, a dedicated channel for air to escape during the grouting process is provided, solving the problem of incomplete grouting caused by air blockage and ensuring the integrity and reliability of the load transfer path.

[0029] 2. The upper anchor plate is firmly fixed, and the installation benchmark is precise. The design of the upper surface of the anchor plate being flush with the upper surface of the grouting material allows the upper anchor plate to be three-dimensionally wrapped and embedded by the high-performance grouting material, forming an "embedded" anchor, effectively resisting the risks of collision and slippage during construction. At the same time, this design provides an extremely high plane benchmark for the installation of the upper steel tower, improving installation accuracy. In addition, the upper anchor plate does not protrude upwards, which can prevent collision and slippage between the tower section and the upper anchor plate during the installation of the steel tower.

[0030] 3. Excellent overall integrity and strong crack resistance. Abandoning traditional grouting trenches, a monolithic grouting scheme is adopted at the top of the concrete transition section, allowing the grout to bond with the concrete matrix into a large-volume integral bearing pad. This not only greatly increases the effective bearing and bonding area but also evenly distributes the concentrated load transmitted by the upper steel tower, significantly reducing stress concentration and cracking risk in the concrete transition section.

[0031] 4. The lower concrete substrate and the grout above it work together to bear the load, extending the structural lifespan. The upper end of the reinforcing steel cage extends upward and is exposed in the concrete substrate, extending into the grout like a "structural root system," firmly anchoring the lower concrete substrate and the grout above it together. This achieves a rigid transition from reinforced concrete to grout and then to the upper anchor plate, greatly enhancing the overall stiffness, fatigue resistance, and long-term durability of the connection joint.

[0032] 5. Simplified process and significant overall benefits. Eliminating the need to excavate grouting trenches simplifies the design and fabrication of precast templates, reduces on-site construction steps, significantly shortens the production cycle, lowers labor and material costs, optimizes the entire production process, and yields obvious economic benefits. Attached Figure Description

[0033] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 This is a top view of the upper anchor plate after it is connected to the concrete transition section according to the present invention; Figure 2 for Figure 1 Schematic diagram of AA section; Figure 3 for Figure 2 A magnified view of the left side; Figure 4 for Figure 2 A magnified view of the right side; Figure 5 A schematic diagram of the cross-section of the tower section mounting base installed on the upper anchor plate (and...). Figure 2 (The cross-sections are in the same location). Figure 6 This is a cross-sectional schematic diagram of the concrete transition section of the present invention (and...). Figure 2 (The cross-sectional positions are the same). Figure 7 In order to be in Figure 6 A cross-sectional diagram showing the installation of anchor plates on the structural foundation; Figure 8 This is a top view of the upper anchor plate of the present invention; Figure 9 for Figure 1 A magnified view of part B; Figure 10 for Figure 9 Schematic diagram of CC section; Figure 11 This is a top view of the lower anchor plate of the present invention; Figure 12 for Figure 11 Schematic diagram of the DD cross section.

[0034] The following labels are shown in the attached diagram: 1-Upper anchor plate, 101-Upper anchor connection hole, 102-Vent hole, 103-Anchor foot connection hole, 104-Upper nut and washer assembly; 2-Concrete transition section, 201-Concrete matrix, 202-Reinforcing steel cage, 203-Anchor rod, 204-Lower anchor plate, 2041-Lower anchoring connection hole, 2042-Lower nut and washer assembly, 205-Prestressed cable sleeve, 206-Prestressed pad, 207-Helical reinforcement; 3- Grouting material; 4- Installation base. Detailed Implementation

[0035] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0036] like Figures 1-12 As shown in this embodiment, a method for installing anchor plates on a wind power concrete transition section includes the following steps: S1. Manufacture the upper anchor plate 1.

[0037] like Figures 8-10 As shown, the upper anchor plate 1 is an annular flat plate. The upper anchor plate 1 has multiple upper anchoring connection holes 101 and multiple vent holes 102 spaced apart, all of which are continuous in the vertical direction. The upper anchor plate 1 also has anchor foot connection holes 103, with the openings of the anchor foot connection holes 103 facing downwards.

[0038] The upper anchor plate 1 is made of Q355B steel, and the vent holes 102 on it are circular holes with a diameter of 30mm~40mm, which are evenly arranged in groups. Multiple upper anchoring connection holes 101 are arranged circumferentially on the upper anchor plate 1. The vent holes 102 are arranged in three rings radially. The vent holes 102 in the first ring are located between the inner ring of the upper anchor plate 1 and the upper anchoring connection holes 101. The axis of each vent hole 102 in the second ring is located on the same cylindrical surface as the axis of each upper anchoring connection hole 101. The vent holes 102 in the third ring are located between the outer ring of the upper anchor plate 1 and the upper anchoring connection holes 101.

[0039] S2, manufacture concrete transfer section 2.

[0040] like Figure 6 As shown, the concrete transition section 2 includes a concrete substrate 201, a reinforcing steel frame 202, and a plurality of anchor rods 203; the concrete substrate 201 is annular, and the distance between the inner and outer rings of the concrete substrate 201 is greater than the distance between the inner and outer rings of the upper anchor plate 1; the reinforcing steel frame 202 is embedded inside the concrete substrate 201, and the upper end of the reinforcing steel frame 202 extends upward and is exposed outside the concrete substrate 201, and at least a portion of the reinforcing steel members of the reinforcing steel frame 202 has a gap with the upper surface of the concrete substrate 201; the plurality of anchor rods 203 are circumferentially spaced inside the concrete substrate 201, and the upper ends of the plurality of anchor rods 203 extend upward and are exposed outside the concrete substrate 201.

[0041] The concrete transition section 2 also includes a lower anchor plate 204, such as Figures 11-12 As shown, the lower anchor plate 204 is an annular flat plate, and the lower anchor plate 204 is provided with a plurality of lower anchoring connection holes 2041 spaced apart. The position of each lower anchoring connection hole 2041 corresponds one-to-one with the position of each upper anchoring connection hole 101; the lower end of each anchor rod 203 is connected to the lower anchor plate 204.

[0042] The anchor rod 203 is a double-ended screw or a threaded rod. The upper and lower sides of the upper anchor plate 1 are respectively provided with upper nuts and washer assemblies 104 at the positions of each of the upper anchoring connection holes 101. The upper and lower sides of the lower anchor plate 204 are respectively provided with lower nuts and washer assemblies 2042 at the positions of each of the lower anchoring connection holes 2041. The upper and lower ends of the double-ended screw or threaded rod are respectively connected to the upper nuts and washer assemblies 104 and the lower nuts and washer assemblies 2042.

[0043] The central axes of the upper anchor plate 1, the lower anchor plate 204, and the concrete substrate 201 coincide; the axes of each anchor rod 203 are located on the same cylindrical surface and the central axis of the cylindrical surface coincides with the central axis of the concrete substrate 201.

[0044] The concrete transition section 2 also includes multiple prestressed cable sleeves 205, which are arranged vertically inside the concrete matrix 201. The multiple prestressed cable sleeves 205 are spaced apart circumferentially, and their radial positions are located between the inner circle of the concrete matrix 201 and the upper anchor plate 1. The upper end of each prestressed cable sleeve 205 extends upward out of the concrete matrix 201, and each prestressed cable sleeve 205 is provided with a prestressed pad 206 at its upper end.

[0045] The concrete transition section 2 also includes a plurality of spiral bars 207, each of which is located below each of the prestressed pads 206 and is respectively sleeved on each of the prestressed cable sleeves 205; the plurality of spiral bars 207 are embedded in the interior of the concrete matrix 201, with their upper ends extending upward and exposed outside the concrete matrix 201.

[0046] S3, Fix the upper anchor plate 1.

[0047] like Figure 7 As shown, an anchor can be installed on each of the anchor connection holes 103 before fixing the upper anchor plate 1. The upper anchor plate 1 is fixed by connecting each of the upper anchor connection holes 101 of the upper anchor plate 1 to the upper end of each of the anchor rods 203. The upper anchor plate 1 is arranged horizontally and at intervals above the concrete substrate 201.

[0048] During on-site construction, after the concrete transfer section 2 is hoisted into place, the upper anchor plate 1 is hoisted into place. Fine adjustments are made using a total station and an electronic level to ensure that the center position deviation of the upper anchor plate 1 is ≤2mm and the levelness is ≤0.5 / 1000.

[0049] S4. Set up the template.

[0050] The template encloses the inner and outer rings of the upper part of the concrete substrate 201, forming a grouting space between the template, the concrete substrate 201 and the upper anchor plate 1. The distance between the inner and outer rings of the concrete substrate 201 is greater than the distance between the inner and outer rings of the upper anchor plate 1, and a grouting channel is formed between the upper anchor plate 1 and the template.

[0051] S5. Grouting construction.

[0052] A pressure grouting machine is used to inject C100 high-strength non-shrink grout 3 into the grouting space through the grouting channel. During grouting, the construction personnel observe all the vent holes 102. After the grout 3 overflows evenly from the vent holes 102, it is temporarily sealed with a wooden plug. The pressure injection continues until it is flush with the top surface of the upper anchor plate 1. During the injection process, the injection volume of the grout 3 is controlled so that the upper surface of the grout 3 is flush with the upper surface of the upper anchor plate 1 and the upper surface of the prestressed pad 206, forming a flat pressure-bearing plane.

[0053] S6. Curing and Acceptance: After grouting is completed, moisturizing and curing shall be carried out; during the curing period and after the curing period, the grouting density shall be verified by non-destructive testing methods, and the final levelness and planar position of the upper anchor plate 1 shall be checked.

[0054] After maintenance and acceptance, the upper nut and washer assembly 104 above the upper anchor plate 1 are removed to form the following shape. Figures 1-4 The structure, at this time, such as Figure 5 As shown, the mounting base 4 of the tower section can be installed on the upper anchor plate 1.

[0055] Finally, 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 method for installing an anchor plate on a wind concrete transition piece, characterized in that, The method comprises the following steps: S1, manufacturing an upper anchor plate; the upper anchor plate is annular and flat, and a plurality of upper anchoring connecting holes and a plurality of exhaust holes are arranged at intervals in the upper anchor plate; S2, manufacturing a concrete adapter; the concrete adapter comprises a concrete base, a steel reinforcement cage and a plurality of anchor rods; the concrete base is annular, and the distance between the inner and outer circles of the concrete base is greater than the distance between the inner and outer circles of the upper anchor plate; the steel reinforcement cage is embedded in the interior of the concrete base, and the upper end of the steel reinforcement cage protrudes upward and is exposed to the concrete base; a plurality of anchor rods are arranged at intervals in the interior of the concrete base, and the upper end of each anchor rod protrudes upward and is exposed to the concrete base; S3, fixing the upper anchor plate; each upper anchoring connecting hole of the upper anchor plate is connected with the upper end of each anchor rod, and the upper anchor plate is arranged horizontally and at intervals above the concrete base; S4, supporting a formwork; the formwork encloses the inner and outer circles of the upper part of the concrete base, and a grouting space is formed between the formwork, the concrete base and the upper anchor plate, and a grouting channel is formed between the upper anchor plate and the formwork; S5, grouting construction; grouting material is injected into the grouting space through the grouting channel until the grouting material uniformly overflows from all the exhaust holes; the amount of grouting material injected is controlled during the injection process so that the upper surface of the grouting material is flush with the upper surface of the upper anchor plate, forming a flat pressure-bearing plane.

2. The method of claim 1, wherein: The method further comprises the following steps: S6, curing and acceptance; after grouting is completed, moisture curing is carried out; and during the curing period and after the curing period is over, the grouting density is verified by a non-destructive testing method, and the final levelness and plane position of the upper anchor plate are reviewed.

3. The method of claim 1, wherein: In the S1, the upper anchor plate is provided with anchor foot connecting holes, and the opening direction of the anchor foot connecting holes is downward; in the S3, an anchor foot is installed on each anchor foot connecting hole before the upper anchor plate is fixed.

4. The method of claim 1, wherein: A plurality of upper anchoring connecting holes are arranged at intervals on the upper anchor plate; the exhaust holes are arranged in three circles in the radial direction, the exhaust holes in the first circle are located between the inner circle of the upper anchor plate and the upper anchoring connecting holes, the axes of the exhaust holes in the second circle and the axes of the upper anchoring connecting holes are located on the same cylindrical surface, and the exhaust holes in the third circle are located between the outer circle of the upper anchor plate and the upper anchoring connecting holes.

5. The method of claim 1, wherein: In the S2, the concrete adapter further comprises a lower anchor plate, the lower anchor plate is annular and flat, a plurality of lower anchoring connecting holes are arranged at intervals in the lower anchor plate, and the positions of the lower anchoring connecting holes correspond one by one to the positions of the upper anchoring connecting holes; the lower end of each anchor rod is connected with the lower anchor plate.

6. The method of claim 5, wherein: The anchor rod is a double-headed screw rod or a threaded rod, the upper and lower sides of the upper anchor plate correspond to the positions of the upper anchoring connecting holes and are respectively provided with upper nuts and gasket assemblies, the upper and lower sides of the lower anchor plate correspond to the positions of the lower anchoring connecting holes and are respectively provided with lower nuts and gasket assemblies, and the upper and lower ends of the double-headed screw rod or the threaded rod are respectively connected with the upper nuts and gasket assemblies and the lower nuts and gasket assemblies.

7. The method of claim 5, wherein: The central axis of the upper anchor plate, the lower anchor plate and the concrete base body coincide; the axis of each anchor rod is located on the same cylindrical surface, and the central axis of the cylindrical surface coincides with the central axis of the concrete base body.

8. The method of claim 1, wherein: In the S2, the concrete transition section further comprises a plurality of prestressed cable sleeves, which are arranged through the inside of the concrete base body in the up-down direction, the plurality of prestressed cable sleeves are arranged in the circumferential direction, and the positions of the plurality of prestressed cable sleeves in the radial direction are between the inner ring of the concrete base body and the upper anchor plate; the upper end of each prestressed cable sleeve extends upward from the concrete base body, and the upper end of each prestressed cable sleeve is respectively provided with a prestressed pad, and the upper surface of the prestressed pad is flush with the upper surface of the upper anchor plate in the S5.

9. The method of claim 8, wherein: In the S2, the concrete transition section further comprises a plurality of spiral ribs, each spiral rib is located below each prestressed pad and is sleeved on each prestressed cable sleeve; and the plurality of spiral ribs are embedded in the inside of the concrete base body, the upper ends of the plurality of spiral ribs extend upward and are exposed to the concrete base body.

10. The method of claim 1, wherein: In the S2, there is a gap between at least part of the steel rod members of the steel reinforcement framework and the upper surface of the concrete base body.

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