A whole pre-embedded test platform foundation of a wind turbine and a construction method thereof

Abstract

The application discloses a whole pre-buried test-bed foundation of a wind turbine, which comprises a flat plate, anchor rods, anchor plate assemblies, anchor bolts and a steel mesh, and discloses a construction method of the whole pre-buried test-bed foundation of the wind turbine, which comprises the following steps: determining a test-bed reference surface elevation and center positioning marking, and positioning marking of the anchor bolts; fixing the anchor bolts on the steel mesh, and pouring bottom layer concrete; threadedly connecting lower ends of the anchor rods to the anchor plate assemblies; and pouring concrete three times and installing the flat plate. Compared with a whole foundation of a pre-buried large steel structure, the foundation has sufficient strength on the basis of a small amount of steel; the whole forming technology of layered pouring construction can improve the overall vibration resistance and reliability of the connection between the flat plate and the foundation; in addition, the pre-buried parts, i.e., the flat plate, the anchor rods, the anchor plate assemblies and the anchor bolts, are all threadedly connected, so that the reliability of the foundation can be improved.

Description

Technical Field

[0001] This application relates to the field of wind turbine test benches, and in particular to a foundation and construction method for an integrally embedded wind turbine test bench. Background Technology

[0002] As wind turbines trend towards larger sizes, the demand for reliability verification for large-capacity wind turbines is becoming increasingly strong. Test benches, as a guarantee for in-plant verification of wind turbines, are playing an increasingly important role. The foundation of a large-capacity test bench is mainly used to bear and cope with various loads generated by the wind turbine during test operation, playing a crucial role in ensuring the safe and stable operation of the unit during testing.

[0003] Currently, the foundations of wind turbine test benches in the industry generally adopt two methods: secondary post-anchoring with reinforced concrete or pre-embedded integral steel structure. Among them, secondary post-anchoring is more widely used, using anchor bolts to generate vertical tension on the foundation concrete, ensuring good load-bearing capacity of the reinforced concrete foundation under long-term, alternating loads. Pre-embedded integral steel structure adopts a large welded steel frame integrally cast with concrete to obtain higher rigidity and load-bearing strength.

[0004] The secondary post-anchoring method used in test rig foundations is typically applicable to test conditions with low torque and low alternating loads. However, with the increasing verification requirements for large-capacity and offshore units, especially the emergence of extreme test conditions and six-degree-of-freedom loading simulations involving high torque, high alternating loads, and high impact loads, post-anchored foundations pose significant safety hazards. These hazards mainly manifest in the following ways: post-anchored foundations are prone to delamination, easily leading to interface separation and cracking; anchor bolts are prone to detachment from the concrete, resulting in poor overall vibration resistance; and maintenance and replacement of anchor bolts are difficult, requiring localized excavation.

[0005] While pre-embedded large steel structure foundations avoid the aforementioned problems, they are expensive overall. Furthermore, the welding conditions on-site for welded steel structures are poor, making it difficult to guarantee weld quality. They are also prone to corrosion during long-term use and are susceptible to separation of the steel structure from the concrete under large alternating loads, resulting in poor overall reliability. Summary of the Invention

[0006] The purpose of this application is to provide a foundation and construction method for an integrated pre-embedded test bench for wind turbine units, which can effectively improve the reliability of the foundation.

[0007] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0008] A pre-embedded test bench foundation for a wind turbine includes: a flat plate, anchor bolts, an anchor plate assembly, anchor bolts, and a reinforcing mesh. The anchor bolts are cast into the bottom layer of concrete. The anchor plate assembly is threaded to the upper end of the anchor bolts. The lower end of the anchor bolt is threaded to the anchor plate assembly. The upper end of the anchor bolt is threaded to the flat plate. The connection end between the anchor bolt and the anchor plate assembly is located within the first layer of concrete. The anchor bolt is located within the second layer of concrete. The connection end between the anchor bolt and the flat plate is located within the third layer of concrete. The upper surface of the flat plate is flush with the upper surface of the third layer of concrete. The reinforcing mesh is located within the bottom layer of concrete, the first layer of concrete, the second layer of concrete, and the third layer of concrete.

[0009] Preferably, the anchor plate assembly includes an upper anchor plate, a lower anchor plate, and an adjusting anchor rod. The upper end of the anchor bolt is threaded to the lower anchor plate, the lower end of the adjusting anchor rod is threaded to the lower anchor plate, the upper end of the adjusting anchor rod is threaded to the upper anchor plate, and the lower end of the anchor rod is threaded to the upper anchor plate.

[0010] Preferably, it further includes auxiliary supports located within the first and second poured concrete, the auxiliary supports being used to support the slab.

[0011] A method for constructing a foundation for an integrally embedded test bench for wind turbine generators includes the following steps:

[0012] Step 1: Determine the elevation of the test bench reference surface, as well as the center positioning line and the positioning line for the anchor bolts;

[0013] Step 2: Arrange the anchor plate assembly and anchor bolts, fix the anchor bolts to the steel mesh, and pour the bottom layer of concrete;

[0014] Step 3: Install the anchor bolt, with the lower end of the anchor bolt threaded to the anchor plate assembly;

[0015] Step 4: Pour the first layer of concrete to cover the connection between the anchor bolt and the anchor plate assembly;

[0016] Step 5: Perform a second concrete pour to cover the anchor rod body;

[0017] Step Six: Plate Installation. Install the plate onto the upper end of the anchor rod.

[0018] Step 7: Pour a third layer of concrete to make the upper surface of the slab flush with the upper surface of the third layer of concrete.

[0019] Preferably, step one includes:

[0020] Determine the elevation of the test bench reference surface, specifically using the location of the on-site building reference line as the reference, determine the Z1 meter elevation of the test bench, and mark it;

[0021] Center positioning and marking: Specifically, using the transverse and longitudinal center lines of the steel mesh as a reference, determine the center position of the test platform at the Z4-meter elevation and find the two horizontal center lines, the X-axis and the Y-axis. Mark and lay out the lines with ink lines and tie them to the steel mesh.

[0022] Using the X-axis as a reference, mark +Y1 and -Y1 respectively, and using the Y-axis as a reference, mark -X1 and -X2 respectively, to determine the center line of the lower anchor plate on the left boundary. Mark and lay out the line with ink lines and tie it to the steel mesh.

[0023] Using the X-axis as a reference, mark +Y2 and -Y2 respectively, and using the Y-axis as a reference, mark +X1 and +X2 respectively, to determine the center line of the anchor plate on the right boundary. Mark and lay out the line with ink and tie it to the steel mesh.

[0024] Preferably, step two includes:

[0025] Pre-position the anchor bolts and arrange the lower anchor plate so that the upper surface of the lower anchor plate is at the Z4 elevation. Align the lower anchor plate with the +Y1 and -Y1 axes according to the hole positions of the lower anchor plate. Confirm the position of the lower anchor plate by pulling diagonally. Insert the anchor bolts into the holes at the bottom of the lower anchor plate, ensuring that the anchor bolts pass through the upper surface of the lower anchor plate. Fix the lower anchor plate with nuts on both the top and bottom surfaces, and position and fix the anchor bolts with steel bars and the surrounding steel mesh.

[0026] Connect the lower end of the adjusting anchor rod to the lower anchor plate;

[0027] Connect the upper anchor plate to the upper end of the adjusting anchor rod so that the top elevation of the upper anchor plate is at the Z3 meter elevation position;

[0028] The bottom layer of concrete was poured so that the top surface of the pouring reached the Z4 elevation position.

[0029] Preferably, step three includes:

[0030] Install auxiliary supports on the bottom concrete pouring;

[0031] The positioning template is pre-placed on the auxiliary support;

[0032] Adjust the support height of the positioning template so that the upper surface of the positioning template is at the Z6 meter elevation.

[0033] Connect the lower end of the anchor rod to the upper anchor plate so that the upper end of the anchor rod is 10mm below the Z1 meter elevation.

[0034] Preferably, step six includes: removing the positioning template, placing the flat plate on the auxiliary support, and connecting it to the upper end of the anchor rod.

[0035] Compared with existing technologies, the above technical solution has the following advantages:

[0036] The wind turbine integrated pre-embedded test bench foundation and construction method provided in this application, compared with the pre-embedded large steel structure integrated foundation, can enable the foundation to have sufficient strength with a small amount of steel. In addition, the integrated design of the flat plate and the foundation, and the use of layered casting construction integral molding technology can improve the overall vibration resistance and reliability of the connection between the flat plate and the foundation. Furthermore, the pre-embedded parts such as the flat plate, anchor rods, anchor plate assemblies and anchor bolts are all threaded connections, which can improve the reliability of the foundation. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A schematic diagram of the staged pouring of the foundation for the pre-embedded test bench of the wind turbine unit;

[0039] Figure 2 Pre-embed positioning diagram for the lower anchor plate;

[0040] Figure 3 This is a schematic diagram of the positioning template. Detailed Implementation

[0041] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0042] Specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] Please refer to Figures 1-3 , Figure 1 A schematic diagram of the staged pouring of the foundation for the pre-embedded test bench of the wind turbine unit; Figure 2 Pre-embed positioning diagram for the lower anchor plate; Figure 3 This is a schematic diagram of the positioning template.

[0044] One specific embodiment of this application provides a pre-embedded foundation for a wind turbine test bench, comprising: a flat plate 01, anchor bolts 02, an anchor plate assembly, anchor bolts 06, and a reinforcing mesh 09. The anchor bolts 06 are embedded in the bottom layer of concrete. The anchor plate assembly is threadedly connected to the upper end of the anchor bolts 06. The lower end of the anchor bolts 02 is threadedly connected to the anchor plate assembly. The upper end of the anchor bolts 02 is threadedly connected to the flat plate 01. The flat plate 01 is preferably a cast iron flat plate 01. The connection end between the anchor bolts 02 and the anchor plate assembly is located within the first layer of concrete, the anchor bolts 02 are located within the second layer of concrete, and the connection end between the anchor bolts 02 and the flat plate 01 is located within the third layer of concrete. The upper surface of the flat plate 01 is flush with the upper surface of the third concrete pour. The reinforcing mesh 09 is located within the bottom concrete, the first concrete pour, the second concrete pour, and the third concrete pour to improve the strength of the foundation. Compared with the pre-embedded large steel structure integral foundation, the foundation can have sufficient strength with a small amount of steel. In addition, the design of flat plate 01 and foundation is integrated, and the layered pouring construction integral molding technology can improve the overall vibration resistance and reliability of the connection between flat plate 01 and foundation. Furthermore, the pre-embedded parts such as flat plate 01, anchor rod 02, anchor plate assembly, and anchor bolt 06 are all threaded connections, which can improve the reliability of the foundation.

[0045] The anchor plate assembly includes an upper anchor plate 03, a lower anchor plate 05, and an adjusting anchor rod 04. The upper end of the anchor bolt 06 is threaded to the lower anchor plate 05. The lower end of the adjusting anchor rod 04 is threaded to the lower anchor plate 05, and the upper end of the adjusting anchor rod 04 is threaded to the upper anchor plate 03. The upper anchor plate 03 and the lower anchor plate 05 can be connected by multiple vertically arranged and parallel adjusting anchor rods 04 to improve the connection stability between the upper anchor plate 03 and the lower anchor plate 05. The lower end of the anchor rod 02 is threaded to the upper anchor plate 03. The distance between the upper anchor plate 03 and the lower anchor plate 05 can be adjusted by adjusting the anchor rod 04, thereby achieving the purpose of adjusting the height position of the anchor rod 04.

[0046] Furthermore, the foundation of the wind turbine integrated pre-embedded test rig also includes auxiliary support 07, which is located within the first and second pours of concrete. Auxiliary support 07 is used to support the plate 01. This can be configured according to... Figure 3 Arrange and install the auxiliary support 07. After the auxiliary support 07 is installed, place the positioning template 08 on the auxiliary support 07. Finally, before installing the plate 01, remove the positioning template 08 from the auxiliary support 07 and then install the plate 01 on the auxiliary support 07.

[0047] This application also provides a method for constructing a foundation for an integrally embedded test bench for wind turbine generators, including the following steps:

[0048] Step 1: Determine the elevation of the test bench's reference surface and the center positioning line, as well as the positioning line for anchor bolt 06. Step 1 specifically includes:

[0049] Determine the elevation of the test bench reference surface. Specifically, use the location of the on-site building reference line as the reference, determine the Z1 meter elevation of the test bench, and mark it. For example, you can use a red or other eye-catching marker to mark it.

[0050] Center positioning line, as shown in the attached diagram. Figure 2 As shown, specifically using the transverse and longitudinal center lines of the steel mesh 09 as a reference, at the Z4-meter elevation, determine the center position of the test platform and find the two horizontal center lines, the X-axis and the Y-axis. Mark and lay out the lines with ink lines and tie them to the steel mesh 09.

[0051] Using the X-axis as a reference, draw +Y1 and -Y1 respectively, and using the Y-axis as a reference, draw -X1 and -X2 respectively to determine the center line of the lower anchor plate 05 on the left boundary. Mark and lay out the line with ink lines and tie it to the steel mesh 09.

[0052] Using the X-axis as a reference, mark +Y2 and -Y2 respectively, and using the Y-axis as a reference, mark +X1 and +X2 respectively, to determine the center line of the lower anchor plate 05 on the right boundary. Mark and lay out the line with ink and tie it to the steel mesh 09.

[0053] Step Two: Arrange the anchor plate assembly and anchor bolts 06, fix the anchor bolts 06 to the reinforcing mesh 09, and pour the bottom layer of concrete. Step Two specifically includes:

[0054] Anchor bolt 06 is pre-positioned, and lower anchor plate 05 is arranged so that the upper surface of lower anchor plate 05 is at the Z4 elevation. According to the hole position of lower anchor plate 05, it is aligned with the +Y1 and -Y1 axes respectively. The position of lower anchor plate 05 is confirmed by diagonal line. Anchor bolt 06 is inserted into the bottom hole of lower anchor plate 05, ensuring that anchor bolt 06 protrudes a certain position from the upper surface of lower anchor plate 05. Lower nuts are used to fix lower anchor plate 05 on both the upper and lower surfaces. Anchor bolt 06 is positioned and fixed with steel bars and the surrounding steel mesh 09. Specifically, spot welding can be used for fixing.

[0055] Adjust the lower anchor plate 05, and by adjusting the position of the anchor bolt 06 and the fastening nut of the lower anchor plate 05, ensure that the upper thread of the anchor bolt 06 has 1 to 2 exposed threads;

[0056] For leveling, use a laser level to measure the elevation of each lower anchor plate 05, and adjust each fastening nut so that the center point of the lower anchor plate 05 is at the Z4 meter elevation, and the height and level error of the four corners of the lower anchor plate 05 are 0.1mm or less. Tighten the nuts with a wrench while adjusting.

[0057] Install the adjusting anchor rod 04, connect the lower end of the adjusting anchor rod 04 to the lower anchor plate 05, and ensure that 1 to 2 threads of the lower part of the adjusting anchor rod 04 are exposed when connecting, and then tighten the bolt with a wrench;

[0058] Install the upper anchor plate 03 and connect it to the upper end of the adjusting anchor rod 04. Nuts can be used for connection. Adjust the nuts so that the top elevation of the upper anchor plate 03 is at the Z3 meter elevation position. Use a laser level to measure and ensure that the height and level error is 0.1 mm or less. Tighten the bolts with a wrench.

[0059] Pour the bottom layer of concrete until the top surface reaches the Z4 elevation. During pouring, ensure even vibration; there should be no hollow areas under the lower anchor plate 05.

[0060] Step 3: Install anchor bolt 02. The lower end of anchor bolt 02 is threaded to the anchor plate assembly. Step 3 specifically includes:

[0061] Auxiliary support 07 is installed on the bottom concrete pouring, and the arrangement of auxiliary support 07 is as follows. Figure 3 As shown;

[0062] Place the positioning template 08 on the auxiliary support 07;

[0063] For verticality check, use a laser level with the center hole of the upper anchor plate 03 as the reference, adjust the horizontal position of the positioning template 08, and find the verticality of the center hole of the template. Four sets of holes need to be measured for one positioning template 08.

[0064] For levelness inspection, use a laser level to measure the elevation of the upper surface of the positioning template 08, and adjust the support height of the positioning template 08 so that the upper surface of the positioning template 08 is at the Z6 meter elevation, with the height and level errors being 0.1 mm or less.

[0065] For anchor bolt 02 installation, screw the nut onto the lower end of anchor bolt 02, leaving a certain distance between the bottom surface of the nut and the lower end of anchor bolt 02. Pre-install the sheath and heat shrink tubing in the designated positions. Insert the upper end of anchor bolt 02 from bottom to top through the hole in positioning template 08, and insert the lower end of anchor bolt 02 into the designated hole in upper anchor plate 03. Then, use the nut to fix upper anchor plate 03 to anchor bolt 02. After installation, use a laser level to measure the elevation of the upper end of anchor bolt 02, ensuring that the upper end of anchor bolt 02 is 10mm below the Z1 meter elevation, and tighten the nut with a wrench.

[0066] For levelness verification, a laser level was used to measure the elevation of the upper surface of positioning template 08. The support height of positioning template 08 was adjusted so that the upper surface of positioning template 08 was at the Z6-meter elevation, with height and level adjustment errors within 0.1mm. The overall flatness error of positioning template 08 was controlled within 1mm.

[0067] Tighten the heat shrink tubing by using a heat gun to position and tighten it.

[0068] For anchor bolt 02 protection, apply grease to the exposed upper part of anchor bolt 02 and cover it with a protective sleeve to prevent anchor bolt 02 from rusting.

[0069] Step 4: Pour the first layer of concrete, ensuring the top surface reaches the Z3 elevation to cover the connection between anchor rod 02 and the anchor plate assembly. C30 concrete can be used. During pouring, ensure even vibration and compaction, and avoid any hollow areas under the upper anchor plate 03. After confirming the load-bearing capacity of the first concrete pour, proceed with the binding of the upper reinforcement bars.

[0070] Step 5: Perform a second concrete pour, ensuring the top surface reaches the Z2 elevation to cover the anchor rod 02. C30 concrete can be used for this pour, and it must be vibrated evenly during pouring.

[0071] After the second concrete pour, the levelness of the foundation was re-measured, and the levelness of the foundation surface was measured with a level.

[0072] Step Six: Install Plate 01. Install Plate 01 on the upper end of Anchor Rod 02. Specifically, Step Six includes: removing the positioning template 08, placing Plate 01 on the auxiliary support 07 and connecting it to the upper end of Anchor Rod 02. After initial leveling with a level, install shims and tighten nuts. Then, install multiple Plate 01s sequentially using the same steps. Use jacks and professional tools to adjust and straighten the platform, and then perform a rough adjustment of the flatness of Plate 01. Next, perform a flatness adjustment of Plate 01. First, screw all the set screws into the set screw holes of Plate 01 to control the height of Plate 01. Then tighten the Anchor Rod 02. Use a level to fine-tune Plate 01 until the required accuracy is achieved.

[0073] Step 7: Pour the third layer of concrete to make the upper surface of plate 01 flush with the upper surface of the third layer of concrete. Grouting holes are pre-drilled on plate 01. C40 high-strength, non-shrink concrete can be used for grouting until all cavities in plate 01 and its surrounding area are completely filled. During grouting, avoid impacting plate 01 to prevent changes in flatness. Finally, cure plate 01 to confirm the load-bearing capacity of the C40 high-strength, non-shrink concrete. Clean the surface of the test bench foundation and apply a protective oil coating.

[0074] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0075] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A construction method for the foundation of an integrally embedded test rig for wind turbine generators, wherein the foundation of the integrally embedded test rig for wind turbine generators includes: The system comprises a flat plate, anchor bolts, anchor plate assemblies, anchor bolts, and reinforcing mesh. The anchor bolts are embedded in the bottom layer of concrete. The anchor plate assembly is threaded to the upper end of the anchor bolts. The lower end of the anchor bolt is threaded to the anchor plate assembly. The upper end of the anchor bolt is threaded to the flat plate. The connection between the anchor bolt and the anchor plate assembly is located within the first layer of concrete. The anchor bolt is located within the second layer of concrete. The connection between the anchor bolt and the flat plate is located within the third layer of concrete. The upper surface of the flat plate is flush with the upper surface of the third layer of concrete. The surface is flush, and the reinforcing mesh is located within the bottom layer concrete, the first pour of concrete, the second pour of concrete, and the third pour of concrete; the anchor plate assembly includes an upper anchor plate, a lower anchor plate, and an adjusting anchor rod, the upper end of the anchor bolt is threaded to the lower anchor plate, the lower end of the adjusting anchor rod is threaded to the lower anchor plate, the upper end of the adjusting anchor rod is threaded to the upper anchor plate, and the lower end of the anchor rod is threaded to the upper anchor plate. The method for constructing the foundation of a wind turbine integral pre-embedded test bench includes the following steps: Step 1: Determine the elevation of the test bench reference surface, as well as the center positioning line and the positioning line for the anchor bolts; Step 2: Arrange the anchor plate assembly and anchor bolts, fix the anchor bolts to the steel mesh, and pour the bottom layer of concrete; Step 3: Install the anchor bolt, with the lower end of the anchor bolt threaded to the anchor plate assembly; Step 4: Pour the first layer of concrete to cover the connection between the anchor bolt and the anchor plate assembly; Step 5: Perform a second concrete pour to cover the anchor rod body; Step Six: Plate Installation. Install the plate onto the upper end of the anchor rod. Step 7: Pour a third layer of concrete to make the upper surface of the slab flush with the upper surface of the third layer of concrete.

2. The construction method for the foundation of the wind turbine integral pre-embedded test bench according to claim 1, characterized in that, Step one includes: Determine the elevation of the test bench reference surface, specifically using the location of the on-site building reference line as the reference, determine the Z1 meter elevation of the test bench, and mark it; Center positioning and marking: Specifically, using the transverse and longitudinal center lines of the steel mesh as a reference, determine the center position of the test platform at the Z4-meter elevation and find the two horizontal center lines, the X-axis and the Y-axis. Mark and lay out the lines with ink lines and tie them to the steel mesh. Using the X-axis as a reference, mark +Y1 and -Y1 respectively, and using the Y-axis as a reference, mark -X1 and -X2 respectively, to determine the center line of the lower anchor plate on the left boundary. Mark and lay out the line with ink lines and tie it to the steel mesh. Using the X-axis as a reference, mark +Y2 and -Y2 respectively, and using the Y-axis as a reference, mark +X1 and +X2 respectively, to determine the center line of the anchor plate on the right boundary. Mark and lay out the line with ink and tie it to the steel mesh.

3. The construction method for the foundation of the wind turbine integral pre-embedded test bench according to claim 2, characterized in that, Step two includes: Pre-position the anchor bolts and arrange the lower anchor plate so that the upper surface of the lower anchor plate is at the Z4 elevation. Align the lower anchor plate with the +Y1 and -Y1 axes according to the hole positions of the lower anchor plate. Confirm the position of the lower anchor plate by pulling diagonally. Insert the anchor bolts into the holes at the bottom of the lower anchor plate, ensuring that the anchor bolts pass through the upper surface of the lower anchor plate. Fix the lower anchor plate with nuts on both the top and bottom surfaces, and position and fix the anchor bolts with steel bars and the surrounding steel mesh. Connect the lower end of the adjusting anchor rod to the lower anchor plate; Connect the upper anchor plate to the upper end of the adjusting anchor rod so that the top elevation of the upper anchor plate is at the Z3 meter elevation position; The bottom layer of concrete was poured so that the top surface of the pouring reached the Z4 elevation position.

4. The construction method for the foundation of the wind turbine integral pre-embedded test bench according to claim 3, characterized in that, Step three includes: Install auxiliary supports on the bottom concrete pouring; The positioning template is pre-placed on the auxiliary support; Adjust the support height of the positioning template so that the upper surface of the positioning template is at the Z6 meter elevation. Connect the lower end of the anchor rod to the upper anchor plate so that the upper end of the anchor rod is 10mm below the Z1 meter elevation.

5. The construction method for the foundation of the wind turbine integral pre-embedded test bench according to claim 4, characterized in that, Step six includes: removing the positioning template, placing the flat plate on the auxiliary support, and connecting it to the upper end of the anchor rod.

Images