Anchor bolt deviation rectification method

Abstract

The anchor deviation correction method provided in the application comprises the following steps: installing a drilling machine and making the annular drill bit of the drilling machine located above the deviated anchor; controlling the annular drill bit to drill an annular hole on the concrete base, the annular hole being arranged around the deviated anchor, and the depth of the annular hole not exceeding the embedding depth of the deviated anchor in the concrete base; knocking off the concrete around the periphery of the deviated anchor in the annular hole and cleaning the sundries in the annular hole; and controlling the correction member to apply a correction force to the deviated anchor, the direction of the correction force being opposite to the deviation direction of the deviated anchor, so that the deviated anchor is in a normal position. The anchor deviation correction method provided in the application has the advantages of easy implementation, saving of construction time and cost, and strong adaptability.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a method for correcting anchor bolt deviation. Background Technology

[0002] Wind power generation is developing rapidly in my country. The connection between wind turbine towers and foundations is often a bolt cage connection. The bolt cage connection is made up of multiple anchor bolts and upper and lower anchor plates. During the concrete pouring process, the anchor bolts may deform and shift, which may lead to installation deviations and make it impossible to install the anchor bolts.

[0003] In existing technologies, when anchor bolts become misaligned during concrete pouring, it is often necessary to break up the concrete base, remove the misaligned anchor bolts, reinstall the anchor bolts, and then proceed with the pouring.

[0004] However, existing processing methods not only cause significant waste of resources, but may also delay the construction period and cause substantial economic losses. Summary of the Invention

[0005] In view of the above problems, this application provides an anchor bolt correction method, which has the advantages of being easy to implement, saving construction time and cost, and being highly adaptable.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] This application provides a method for correcting anchor bolt misalignment, including:

[0008] Install the drilling rig and position the circumferential drill bit above the offset anchor bolt;

[0009] Control the annular drill bit to drill annular holes in the concrete substrate. The annular holes are set around the offset anchor bolts, and the depth of the annular holes does not exceed the embedment depth of the offset anchor bolts in the concrete substrate.

[0010] Remove the concrete surrounding the misaligned anchor bolt located in the annular hole and clean the debris from the annular hole;

[0011] The control and straightening components apply a corrective force to the misaligned anchor bolts. The direction of the corrective force is opposite to the misalignment direction of the anchor bolts, so as to bring the misaligned anchor bolts into the correct position.

[0012] The anchor bolt correction method provided in this application involves first installing a drilling rig with its annular drill bit positioned above the misaligned anchor bolt. Then, the annular drill bit is controlled to drill an annular hole in the concrete substrate, surrounding the misaligned anchor bolt. The depth of the annular hole does not exceed the embedment depth of the misaligned anchor bolt in the concrete substrate. Next, the concrete surrounding the misaligned anchor bolt in the annular hole is knocked away, and debris in the annular hole is cleaned. Then, a corrective force is applied to the misaligned anchor bolt by a corrective component, the direction of which is opposite to the direction of the misalignment, to bring the misaligned anchor bolt into a corrected position. This anchor bolt correction method is simple to implement and easy for operators to perform. Furthermore, it eliminates the need for reinstalling the anchor bolt and re-pouring, saving construction time and costs. In addition, this anchor bolt correction method is adaptable to various construction scenarios and has strong versatility.

[0013] In one possible implementation, installing the drilling rig includes:

[0014] The drilling rig is positioned and fixed to the positive anchor bolt next to the offset anchor bolt.

[0015] In this way, when the annular drill bit on the drilling rig drills vertically downwards, the perpendicularity of the drilled annular hole relative to the mounting base surface can be guaranteed.

[0016] In one possible implementation, the annular drill bit is a hollow cylindrical drill bit, and the depth of the annular hole is 1 / 3 to 1 / 2 of the embedment depth of the offset anchor in the concrete substrate.

[0017] In this way, within this range, the misaligned anchor bolt is prone to deformation after being subjected to corrective force; at the same time, it can also ensure the installation strength of the misaligned anchor bolt in the concrete substrate.

[0018] In one possible implementation, the annular hole is drilled by a layered drilling method;

[0019] Controlling the annular drill bit to drill annular holes in a concrete substrate includes:

[0020] The same annular hole is drilled using ring drill bits of different lengths in sequence, wherein the extension length of the ring drill bit used in the later stage is greater than that of the ring drill bit used in the earlier stage.

[0021] In this way, a single annular drill bit will not work for a long time, preventing fatigue damage to the annular drill bit and thus extending its service life.

[0022] In one possible implementation, controlling the annular drill bit to drill an annular hole in a concrete substrate includes:

[0023] Obtain the gap between the offset anchor and the hole wall of the annular hole when the annular drill bit drills to a certain depth; adjust the attitude of the drilling rig according to the gap so that the annular drill bit does not touch the offset anchor.

[0024] In this way, the annular drill bit will not touch the misaligned anchor bolt, preventing damage to both due to collision, which would affect the normal progress of the correction process.

[0025] In one possible implementation, before installing the drilling rig, or after controlling the straightener to apply a corrective force to the misaligned anchor bolt, the following is also included:

[0026] Obtain the positional correspondence between multiple mounting holes of the anchor plate and anchor bolts;

[0027] Based on the positional correspondence, determine whether the anchor is an off-center anchor or a center anchor;

[0028] The anchor plate is installed on a concrete base with anchor bolts.

[0029] In this way, workers can use the correspondence between the multiple mounting holes on the anchor plate and the anchor bolts to determine whether the anchor bolts are misaligned or aligned, making the judgment process simple.

[0030] In one possible implementation, the corrective component is a chain hoist, one end of which is connected to the misaligned anchor bolt. The chain hoist applies a force opposite to the misalignment direction of the anchor bolt, causing the anchor bolt to undergo plastic deformation.

[0031] In this way, workers can use the tightening force of the chain hoist to correct the misaligned anchor bolts, restoring them to their correct position.

[0032] In one possible implementation, after the control corrector applies a corrective force to the misaligned anchor bolt, the following is also included:

[0033] The control fastener restricts the movement of the offset anchor bolt, so that the offset anchor bolt is fixed in the annular hole.

[0034] In this way, after the fastener restricts the movement of the misaligned anchor bolt, it can prevent the corrected misaligned anchor bolt from springing back to the misaligned state.

[0035] In one possible implementation, the fastener is a wedge, and multiple wedges are provided. The multiple wedges are inserted into the opening of the annular hole, and the multiple wedges are distributed at intervals along the circumference of the annular hole.

[0036] The wedge is configured to compress the offset anchor and the hole wall of the annular hole to limit the movement of the offset anchor.

[0037] In this way, the presence of the wedge helps to restrict the movement of the offset anchor bolt, preventing it from moving or deforming within the annular hole.

[0038] In one possible implementation, after controlling the fastener to limit the movement of the offset anchor bolt, the following is also included:

[0039] Seal the opening of the annular hole and tension the misaligned anchor bolt;

[0040] Secondary grouting is performed on top of the concrete base to form a solidified layer.

[0041] In this way, the secondary grouting forms a solidified layer, which can further fix the corrected misaligned anchor bolts and keep them in the correct position.

[0042] The structure of this application, as well as its other inventive objectives and beneficial effects, will become more apparent and understandable through a description of the specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of 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.

[0044] Figure 1 A flowchart of the anchor bolt correction method provided in the embodiments of this application;

[0045] Figure 2 A schematic diagram of the drilling rig installation provided in an embodiment of this application;

[0046] Figure 3 This is a schematic diagram showing the position between the annular drill bit and the offset anchor bolt.

[0047] Figure 4 This is a schematic diagram of a ring drill bit drilling a hole in a concrete substrate.

[0048] Figure 5 This is a schematic diagram showing the completed drilling process using a ring drill bit.

[0049] Figure 6 A schematic diagram showing the concrete around the misaligned anchor bolt after it has been knocked away.

[0050] Figure 7 This is a schematic diagram of applying corrective force to a misaligned anchor bolt using a corrective component;

[0051] Figure 8 This is a schematic diagram of fixing a misaligned anchor bolt using a fastener.

[0052] Figure 9 This is a schematic diagram of the solidification layer formed during secondary grouting.

[0053] Explanation of reference numerals in the attached figures:

[0054] 100-Drilling Rig;

[0055] 110-ring drill bit;

[0056] 200-offset anchor bolt;

[0057] 300-Position Anchor Bolt;

[0058] 400 - Concrete base;

[0059] 410 - Annular hole;

[0060] 420 - Mounting base surface;

[0061] 500-Corrective Parts;

[0062] 600-Anchor Plate;

[0063] 610 - Mounting hole;

[0064] 700 - Fastener;

[0065] 800 - Solidified layer;

[0066] 900 - Mounting bracket. Detailed Implementation

[0067] The connection between the wind turbine tower and the concrete foundation is often a bolt cage connection. This connection consists of multiple anchor bolts and upper and lower anchor plates, all located on the concrete foundation. During tower installation, these anchor bolts need to be inserted into the flange holes at the bottom of the tower for secure fixing. However, the concrete pouring process can cause anchor bolt deformation and misalignment, leading to installation deviations and preventing the anchor bolts from being installed in the flange holes at the bottom of the tower, thus affecting subsequent tower installation.

[0068] In existing technologies, when anchor bolts become misaligned during concrete pouring, they need to be corrected to ensure they are in the correct position and can be aligned with the flange holes at the bottom of the tower and inserted into them. However, this correction process often requires breaking up the concrete base, removing the misaligned anchor bolts, reinstalling them, and then pouring the concrete again.

[0069] However, the existing treatment methods require breaking up the concrete base, reinstalling anchor bolts, and pouring concrete, which takes a long time. This not only wastes a lot of resources but also delays the construction period and causes significant economic losses.

[0070] To address the aforementioned problems, this application provides an anchor bolt correction method. During implementation, a drilling rig is first installed, with its annular drill bit positioned above the misaligned anchor bolt. Then, the annular drill bit is controlled to drill an annular hole in the concrete substrate, surrounding the misaligned anchor bolt. The depth of the annular hole does not exceed the embedment depth of the misaligned anchor bolt in the concrete substrate. Next, the concrete surrounding the misaligned anchor bolt in the annular hole is knocked off, and debris in the annular hole is cleaned. Then, a corrective force is applied to the misaligned anchor bolt by a corrective component, the direction of which is opposite to the misalignment direction of the anchor bolt, to bring the misaligned anchor bolt into a corrected position. Therefore, this application provides an anchor bolt correction method that is simple to implement and easy for operators to carry out. Furthermore, it eliminates the need for reinstalling the anchor bolt and re-pouring, saving construction time and costs. In addition, the anchor bolt correction method provided by this application is adaptable to various construction scenarios and has strong versatility.

[0071] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0072] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0073] The following combination Figures 1 to 9 The anchor bolt correction method provided in the embodiments of this application will be described in detail.

[0074] like Figure 1 As shown in the figure, the flowchart illustrates the anchor bolt correction method, which includes:

[0075] S100: Install the drilling rig and position the circumferential drill bit above the offset anchor bolt.

[0076] Specifically, Figure 2 The diagram shows the installation of drilling rig 100. After installation, drilling rig 100 is positioned above offset anchor bolt 200; furthermore, Figure 3 The diagram shows the specific position between the annular drill bit 110 and the offset anchor bolt 200. When the annular drill bit 110 drills downwards, it can drill an annular hole 410 in the concrete base 400.

[0077] S200: Controls the annular drill bit to drill annular holes in the concrete substrate. The annular holes are set around the offset anchors, and the depth of the annular holes does not exceed the embedment depth of the offset anchors in the concrete substrate.

[0078] Specifically, Figure 4 The diagram shows a schematic of the annular drill bit 110 drilling a hole in a concrete substrate 400. The annular drill bit 110 can drill down into the concrete substrate 400 to drill an annular hole 410 in the concrete substrate 400. During the drilling process, at least part of the offset anchor bolt 200 is located inside the annular hole 410 and the annular drill bit 110. Figure 5 The diagram shows the result after drilling with the annular drill bit 110. As shown, the depth of the annular hole 410 does not exceed the embedment depth of the offset anchor 200 in the concrete base 400, so only a portion of the offset anchor 200 is located in the annular hole 410.

[0079] S300: Remove the concrete surrounding the misaligned anchor bolt located in the annular hole and clean the debris in the annular hole.

[0080] Specifically, Figure 6 After the concrete surrounding the offset anchor 200 in the annular hole 410 is knocked off and cleaned, there is no concrete left in the annular hole 410, only part of the offset anchor 200 body remains. Therefore, the offset anchor 200 in the annular hole 410 is not restricted by the concrete surrounding it, and can deform under external force. Specifically, a chisel can be used to knock off the concrete surrounding the offset anchor 200, and clamps can be used to remove debris from the annular hole 410; alternatively, a high-pressure water gun can be used to flush the annular hole 410, followed by blowing air with an air compressor or pumping out the water inside the annular hole 410, and finally, clamps can be used to remove the remaining debris, completing the cleaning of the annular hole 410.

[0081] S400: Control the straightening element to apply a corrective force to the misaligned anchor bolt. The direction of the corrective force is opposite to the misalignment direction of the misaligned anchor bolt, so as to put the misaligned anchor bolt in the correct position.

[0082] Specifically, Figure 7 This is a schematic diagram of applying a corrective force to the misaligned anchor bolt 200 using the corrective element 500. The misaligned anchor bolt 200 can be pulled using the corrective element 500. Figure 7 If the offset anchor 200 is tilted to the right, the corrective element 500 can be used to pull the offset anchor 200 to the left, bringing it into the correct position. Additionally, the corrective element 500 can apply a lateral corrective force to the top of the offset anchor 200, thereby increasing the torque of the corrective force and improving the corrective effect.

[0083] It should be noted that the bottom of the anchor bolt is embedded and fixed in the concrete base 400. The top of the concrete base 400 has an installation base surface 420, which can be horizontal. The top of the anchor bolt extends out of the installation base surface 420, and the anchor bolts are spaced apart on the concrete base 400. When the perpendicularity of the anchor bolt relative to the installation base surface 420 is within a certain range, the anchor bolt is a properly positioned anchor bolt 300, in a positive state. When the perpendicularity of the anchor bolt relative to the installation base surface 420 exceeds a certain range, the anchor bolt is significantly deviated, and the anchor bolt is a misaligned anchor bolt 200, in a misaligned state. Figure 1 As shown, the offset anchor 200 is located between the two positive anchors 300.

[0084] Therefore, this application provides an anchor bolt correction method that is simple to implement and easy for operators to carry out; moreover, it eliminates the need to reinstall anchor bolts and recast concrete, saving construction time and costs; in addition, the anchor bolt correction method provided by this application can adapt to various construction scenarios and has strong adaptability.

[0085] In the embodiments of this application, such as Figure 2 and Figure 3 As shown, the installation of the drilling rig 100 includes: positioning and fixing the drilling rig 100 to the positive anchor bolt 300 next to the offset anchor bolt 200. With this configuration, during installation, the drilling rig 100 is positioned and fixed using the positive anchor bolt 300 next to the offset anchor bolt 200. When the annular drill bit 110 on the drilling rig 100 drills vertically downwards, the perpendicularity of the drilled annular hole 410 relative to the mounting base surface 420 can be guaranteed.

[0086] Specifically, such as Figure 1 As shown, the drilling rig 100 can be mounted on the positioning anchor bolt 300 via the mounting bracket 900; wherein, the mounting bracket 900 may be provided with positioning holes, into which the positioning anchor bolt 300 can be inserted, the mounting bracket 900 is mounted on the positioning anchor bolt 300 through the positioning holes, and then the drilling rig 100 is fixedly mounted on the mounting bracket 900. The extension direction of the annular drill bit 110 is vertically downward.

[0087] In the embodiments of this application, such as Figure 4As shown in the figure, the annular drill bit 110 is a hollow cylindrical drill bit. The depth of the annular hole 410 is 1 / 3 to 1 / 2 of the embedment depth of the offset anchor 200 in the concrete substrate 400. When the depth of the annular hole 410 is 1 / 3 to 1 / 2 of the embedment depth of the offset anchor 200 in the concrete substrate 400, within this range, the offset anchor 200 can undergo significant deformation after applying a corrective force. If the depth is less than this range, the deformation of the offset anchor 200 under the action of the corrective force is not obvious, thus failing to achieve a good corrective effect. If the depth is greater than this range, drilling the hole in the concrete substrate 400 with the annular drill bit 110 will take a long time.

[0088] With this configuration, within this range, the offset anchor 200 is prone to deformation after being subjected to corrective force; at the same time, it can also ensure the installation strength of the offset anchor 200 in the concrete base 400.

[0089] In this embodiment, the annular hole 410 is drilled by layered drilling; when controlling the annular drill bit 110 to drill the annular hole 410 on the concrete substrate 400, the following steps are included:

[0090] The same annular hole 410 is drilled sequentially using annular drill bits 110 of unequal lengths, wherein the extension length of the annular drill bit 110 used in each subsequent drilling is greater than that of the annular drill bit 110 used in the previous drilling. The perpendicularity of the annular hole 410 must be ensured during drilling.

[0091] With this configuration, different annular drill bits 110 of varying lengths can be used to drill the same annular hole 410, preventing a single annular drill bit 110 from working for an extended period of time, thus preventing fatigue damage to the annular drill bit 110 and extending its service life.

[0092] In this embodiment of the application, controlling the annular drill bit 110 to drill an annular hole 410 in the concrete substrate 400 includes:

[0093] First, determine the gap between the offset anchor 200 and the hole wall of the annular hole 410 when the annular drill bit 110 drills to a certain depth. The gap can be determined by observing it with an endoscope or by visually estimating it.

[0094] Then, adjust the attitude of the drill rig 100 according to the gap so that the annular drill bit 110 does not touch the offset anchor bolt 200. Figure 5 The diagram shows the completed drilling process of the annular drill bit 110. During drilling, the annular drill bit 110 always maintains a gap with the offset anchor bolt 200.

[0095] With this configuration, the annular drill bit 110 will not touch the offset anchor bolt 200, preventing damage to both due to collision, which would affect the normal progress of the correction process.

[0096] In this embodiment of the application, before installing the drilling rig 100, or after controlling the straightening element 500 to apply a corrective force to the misaligned anchor bolt 200, the method further includes:

[0097] First, obtain the positional correspondence between the multiple mounting holes 610 on the anchor plate 600 and the anchor bolts. Each mounting hole 610 on the anchor plate 600 corresponds one-to-one with an anchor bolt. With the anchor plate 600 placed horizontally, align the mounting holes 610 on the anchor plate 600 with the anchor bolts and observe the positional correspondence between the mounting holes 610 and the anchor bolts.

[0098] Then, based on the positional correspondence, the anchor is determined to be either an off-center anchor 200 or a center anchor 300. When the orthographic projection of the anchor on the anchor plate 600 is located in the corresponding mounting hole 610, the anchor is a center anchor 300; when the orthographic projection of the anchor on the anchor plate 600 exceeds the corresponding mounting hole 610, the anchor is an off-center anchor 200.

[0099] The anchor plate 600 is installed on the concrete base 400, which is equipped with anchor bolts.

[0100] With this setup, staff can use the correspondence between the multiple mounting holes 610 on the anchor plate 600 and the anchor bolt position to determine whether the anchor bolt is an off-center anchor bolt 200 or a center anchor bolt 300, making the determination process simple.

[0101] In this embodiment, the corrective component 500 is a chain hoist, one end of which is connected to the misaligned anchor bolt 200. The chain hoist applies a force opposite to the misalignment direction of the misaligned anchor bolt 200 to cause plastic deformation of the misaligned anchor bolt 200. Figure 7 This is a schematic diagram of applying a corrective force to the misaligned anchor bolt 200 using the corrective component 500.

[0102] With this setup, workers can use the tightening force of the chain hoist to correct the misaligned anchor bolt 200, restoring it to its correct position.

[0103] In this embodiment of the application, after the corrective element 500 applies a corrective force to the misaligned anchor bolt 200, the method further includes:

[0104] The control fastener 700 restricts the movement of the offset anchor bolt 200 so that the offset anchor bolt 200 is fixed in the annular hole 410. Figure 8 This is a schematic diagram of fixing the offset anchor bolt 200 using the fastener 700. At this time, the offset anchor bolt 200 cannot move or deform in the annular hole 410.

[0105] With this configuration, after the fastener 700 restricts the movement of the misaligned anchor bolt 200, it can prevent the corrected misaligned anchor bolt 200 from springing back to the misaligned state.

[0106] Furthermore, such as Figure 8 As shown, the fastener 700 is a wedge, and multiple wedges are provided. Multiple wedges are inserted into the opening of the annular hole 410, and the multiple wedges are distributed at intervals along the circumference of the annular hole 410. The wedges are configured to compress the offset anchor 200 and the hole wall of the annular hole 410 to limit the movement of the offset anchor 200.

[0107] With this configuration, the presence of the wedge helps to restrict the movement of the offset anchor bolt 200, ensuring that the offset anchor bolt 200 cannot move or deform within the annular hole 410.

[0108] Specifically, after controlling the fastener 700 to limit the movement of the offset anchor bolt 200, it also includes:

[0109] First, the opening of the annular hole 410 is sealed, and the offset anchor bolt 200 is tensioned. Sealing the opening of the annular hole 410 prevents debris from entering the annular hole 410; tensioning the offset anchor bolt 200 applies stress to the offset anchor bolt 200.

[0110] Then, secondary grouting is performed above the concrete base 400, forming a solidified layer 800. Figure 9 This is a schematic diagram of the solidified layer 800 formed by secondary grouting. After the solidified layer 800 is formed by secondary grouting, the tensioning of the offset anchor bolt 200 can be stopped. The offset anchor bolt 200 can compress the solidified layer 800 and improve the overall strength of the solidified layer 800.

[0111] With this setup, the secondary grouting forms a solidified layer 800, which can further fix the corrected misaligned anchor bolt 200, keeping it in the correct position.

[0112] In the description of this application, it should be noted that the directional descriptions such as "top," "bottom," "vertical," "horizontal," "up," "down," "left," and "right" are relative to... Figure 2 The diagram of the drilling rig's installation is for informational purposes only and should not be construed as a limitation of this application.

[0113] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0114] The devices or elements referred to in this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0115] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for correcting anchor bolt deviation, characterized in that, include: Install the drilling rig, which is positioned and fixed on the positive anchor bolt next to the offset anchor bolt, and the annular drill bit of the drilling rig is positioned above the offset anchor bolt; The annular drill bit is controlled to drill an annular hole in the concrete substrate. The annular hole is arranged around the offset anchor bolt, and the depth of the annular hole does not exceed the embedment depth of the offset anchor bolt in the concrete substrate. Knock off the concrete surrounding the offset anchor bolt located in the annular hole and clean the debris in the annular hole; The control corrector applies a corrective force to the misaligned anchor bolt, the direction of which is opposite to the misalignment direction of the misaligned anchor bolt, so as to bring the misaligned anchor bolt into the correct position. Controlling the annular drill bit to drill the annular hole in the concrete substrate includes: The gap between the offset anchor and the hole wall of the annular hole is obtained when the annular drill bit drills to a certain depth. The attitude of the drilling rig is adjusted according to the gap so that the annular drill bit does not touch the offset anchor bolt; Before installing the drilling rig, or after controlling the straightening element to apply a corrective force to the misaligned anchor bolt, the method further includes: Obtain the positional correspondence between the multiple mounting holes of the anchor plate and the anchor bolts; Based on the positional correspondence, the anchor bolt is determined to be either an off-center anchor bolt or a center anchor bolt; The anchor plate is installed on a concrete base where the anchor bolts are located.

2. The anchor bolt correction method according to claim 1, characterized in that, The annular drill bit is a hollow cylindrical drill bit, and the depth of the annular hole is 1 / 3 to 1 / 2 of the embedment depth of the offset anchor in the concrete substrate.

3. The anchor bolt correction method according to claim 1, characterized in that, The annular hole was drilled using a layered drilling method; Controlling the annular drill bit to drill the annular hole in the concrete substrate includes: The same annular hole is drilled sequentially using annular drill bits of unequal length, wherein the extension length of the annular drill bit used in a later step is greater than the extension length of the annular drill bit used in a previous step.

4. The anchor bolt correction method according to any one of claims 1-3, characterized in that, The corrective component is a chain hoist, one end of which is connected to the misaligned anchor bolt. The chain hoist applies a force opposite to the misalignment direction of the anchor bolt, causing the anchor bolt to undergo plastic deformation.

5. The anchor bolt correction method according to any one of claims 1-3, characterized in that, After controlling the corrective element to apply a corrective force to the misaligned anchor bolt, the method further includes: The control fastener restricts the movement of the offset anchor bolt, thereby fixing the offset anchor bolt in the annular hole.

6. The anchor bolt correction method according to claim 5, characterized in that, The fixing element is a wedge, and multiple wedges are provided. The multiple wedges are inserted into the opening of the annular hole, and the multiple wedges are distributed at intervals along the circumference of the annular hole. The wedge is configured to press against the wall of the offset anchor and the annular hole to restrict the movement of the offset anchor.

7. The anchor bolt correction method according to claim 5, characterized in that, After controlling the fixing element to limit the movement of the offset anchor bolt, the method further includes: Seal the opening of the annular hole and tension the offset anchor bolt; A secondary grouting process is performed on top of the concrete base to form a solidified layer.

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