Movable foundation bolt set and anti-shear groove positioning device and construction method

Abstract

The invention provides a movable foundation bolt set and anti-shear groove positioning device and a construction method, the positioning device comprises two sets of guide rails, the guide rails are correspondingly arranged, and a movable frame is arranged on the guide rails; the positioning plate is located at the top of the movable frame, and foundation bolt holes and shear-resistant slotted holes which are located between the two sets of guide rails are formed in the positioning plate; and the two ends of the telescopic piece are connected with the movable frame and the positioning plate correspondingly, and the telescopic piece is used for lifting the positioning plate. According to the method, the distribution accuracy of a plurality of foundation bolts in the foundation bolt group and the distribution accuracy of the anti-shear slots in the center of the foundation bolt group are controlled by prefabricating the positioning plates (specifically referring to the accuracy of the foundation bolt holes and the anti-shear slots) meeting the construction requirements, and the placement accuracy and the placement efficiency are improved; through cooperation of the guide rail and the moving frame, after the guide rail is accurately arranged, multiple anchor bolt sets distributed along a straight line can be arranged in batches, and the arrangement precision and the arrangement efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a movable anchor bolt group and a shear groove positioning device and a construction method. Background Art

[0003] In steel structure buildings, anchor bolts and shear keys are usually used to connect the steel frame and foundation, but the number of anchor bolts is large, which makes it difficult to locate and embed them. The shear key located in the center of the anchor bolt group is also difficult to locate accurately, which leads to construction difficulties and a low first-time pass rate. In addition, the construction accuracy of the shear key directly affects the shear resistance of the steel frame, affecting the quality and service life of the building. Summary of the invention

[0004] The object of the present invention is to provide a movable anchor bolt group and a shear groove positioning device and a construction method to solve the problems in the above background.

[0005] The technical solution adopted by the present invention is: a movable anchor bolt group and shear groove positioning device, which includes:

[0006] Guide rails, two groups of which are provided correspondingly, and movable racks are provided on the guide rails;

[0007] A positioning plate, the positioning plate is located on the top of the mobile frame and is provided with anchor bolt holes and shear slot holes located between the two groups of guide rails;

[0008] A telescopic member, two ends of which are respectively connected to the moving frame and the positioning plate, and are used to lift the positioning plate.

[0009] Specifically, the mobile frame includes vertical supports, transverse supports and diagonal supports. A plurality of the vertical supports are arranged in parallel and connected to form a cubic grid through the transverse supports. The diagonal supports are crossed in an X shape, and the two sides are respectively connected to the adjacent vertical supports. The bottom of the vertical supports is provided with running wheels, and the running wheels are movably arranged in the guide rails.

[0010] Specifically, the positioning device also includes an anchor bolt support plate, which extends in a direction perpendicular to the guide rail and is slidably arranged on a group of relative cross braces; a rib plate is provided at the bottom of the anchor bolt support plate, and a locking member connected to the cross brace is provided on the rib plate.

[0011] Specifically, the locking member includes a push rod, a rotary handle and an abutment plate. The push rod is arranged through the rib plate and is threadedly connected to the rib plate. The rotary handle and the abutment plate are respectively located at two ends of the push rod. The abutment plate is close to the cross brace, and its shape is adapted to the outer shape of the cross brace.

[0012] Specifically, a slide groove extending in the same direction as the guide rail is provided on the top surface of the cross brace, and a slider is provided at the bottom of the anchor bolt support plate, and the slider is slidably disposed in the slide groove.

[0013] Specifically, the telescopic member includes a vertical screw and a T-shaped screw sleeve, the bottom end of the vertical screw is slidably inserted into the movable frame; the T-shaped screw sleeve is sleeved outside the vertical screw and at least partially abuts against the outside of the movable frame.

[0014] Specifically, a mounting plate is provided at the top of the vertical screw rod, a straight slot is provided on the mounting plate, the straight slot extends in a direction perpendicular to the guide rail, and a high-strength bolt for connecting the positioning plate is provided in the straight slot.

[0015] The technical solution of the present invention also includes: a construction method using the movable anchor bolt group and the shear groove positioning device as described above, which includes the steps of:

[0016] (1) Place the guide rail on the foundation cushion, and install the mobile frame, telescopic parts, positioning plate and anchor bolt support plate in sequence;

[0017] (2) Extend the telescopic part to raise the positioning plate, pass the top of the anchor bolt through the anchor bolt hole, and secure it with the matching nut; move the anchor bolt support plate to the bottom of the anchor bolt and lock it with the locking piece;

[0018] (3) Move the mobile frame and the anchor bolt assembly to the target installation point. After accurate positioning, fix the mobile frame and remove the anchor bolt support plate; shorten the telescopic member to lower the positioning plate and accurately install the anchor bolt assembly;

[0019] (4) The shear groove formwork is placed close to the inner wall of the shear groove hole, and the limiting steel is welded or tied to the anchor bolts so that part of the limiting steel is surrounded and tightened on the outside of the shear groove formwork to complete the positioning and placement of a set of anchor bolts and the shear groove formwork.

[0020] The beneficial effects of the present invention are as follows: by prefabricating a positioning plate that meets the construction requirements (specifically the accuracy of the anchor bolt holes and the shear slot holes), the distribution accuracy of multiple anchor bolts in the anchor bolt group and the distribution accuracy of the shear slots in the center of the anchor bolt group can be controlled, thereby improving the placement accuracy and efficiency; through the cooperation of the guide rails and the mobile frame, after the guide rails are accurately placed, multiple groups of anchor bolt groups distributed along a straight line can be placed in batches, thereby improving the placement accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural diagram of an embodiment of the present invention;

[0022] Figure 2 is a three-dimensional structural diagram of a mobile frame in an embodiment of the present invention;

[0023] Figure 3 is a longitudinal sectional view of a telescopic member in an embodiment of the present invention;

[0024] Figure 4 is a bottom view of the mounting plate and the positioning plate in the embodiment of the present invention;

[0025] Figure 5 is a side view of a cross brace and an anchor bolt support plate in an embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of an anchor bolt group and a shear groove template installed using an embodiment of the present invention.

[0027] In the figure:

[0028] 1. Guide rail;

[0029] 2. Mobile frame; 2.1. Vertical support; 2.2. Horizontal support; 2.3. Diagonal support;

[0030] 3. Positioning plate; 3.1. Anchor bolt hole; 3.2. Shear slot hole;

[0031] 4. Telescopic parts; 4.1. Vertical screw rod; 4.2. T-shaped screw sleeve;

[0032] 5. Traveling wheels;

[0033] 6. Mounting plate; 6.1. Straight notch;

[0034] 7. High-strength bolts;

[0035] 8. Anchor bolt support plate;

[0036] 9. Ribs;

[0037] 10. Locking member; 10.1. Push rod; 10.2. Rotary handle; 10.3. Abutment plate;

[0038] 11. Chute;

[0039] 12. Slider;

[0040] 13. Anchor bolts;

[0041] 14. Shear groove formwork. DETAILED DESCRIPTION

[0042] The technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0044] Reference Figure 1-6 The present embodiment provides a movable anchor bolt group and shear groove positioning device, the structure of which includes: a guide rail 1, a movable frame 2, a positioning plate 3 and a telescopic member 4, wherein two groups of guide rails 1 are correspondingly arranged, and are arranged according to the arrangement direction of the anchor bolt group, specifically: a plurality of anchor bolt groups are distributed along a straight line on the foundation cushion layer, and the extension direction of the guide rail 1 is the same as the extension direction of the straight line, the purpose is to complete the arrangement of a plurality of anchor bolt groups distributed in a collinear manner by only moving other components without disassembling the guide rail 1, so as to improve the construction efficiency and construction accuracy; the movable frame 2 can be movably arranged It is placed on the guide rail 1, which is a cubic grid structure with a vacant middle portion to temporarily accommodate the anchor bolts 13; the positioning plate 3 is located on the top of the mobile frame 2, and is provided with an anchor bolt hole 3.1 and a shear slot hole 3.2 located between the two sets of guide rails 1, the anchor bolt hole 3.1 is used for temporarily suspending the anchor bolt 13, and the shear slot hole 3.2 is used for accurately positioning the shear slot template 14; the telescopic member 4 is located between the mobile frame 2 and the positioning plate 3, and its two ends are respectively connected to the mobile frame 2 and the positioning plate 3, and the distance between the positioning plate 3 and the mobile frame 2 can be adjusted by changing its own length, thereby raising and lowering the height of the positioning plate 3.

[0045] According to construction requirements, precisely positioned anchor bolt holes 3.1 and shear slot holes 3.2 are pre-opened on the positioning plate 3. Generally, the anchor bolt holes 3.1 are arranged in a ring shape around the outer periphery of the shear slot holes 3.2, but the distribution density of the anchor bolt holes 3.1 and the spacing between them and the shear slot holes 3.2 vary according to construction requirements. Therefore, various types of positioning plates 3 can be pre-configured.

[0046] The operating principle of the positioning device is as follows: place the guide rail 1 on the foundation cushion layer, install the mobile frame 2 on the guide rail 1, and then install the telescopic member 4 and the positioning plate 3 in sequence; extend the telescopic member 4 to make the positioning plate 3 at a high position, and after the top of the anchor bolt 13 passes through the anchor bolt hole 3.1, fix it with a matching nut; move the mobile frame 2 and the anchor bolt group to the target installation point, use a laser instrument and other equipment to detect the positioning accuracy of the anchor bolt group, and after accurate positioning, fix the mobile frame 2, shorten the telescopic member 4, and gradually lower the positioning plate 3 to a low position, and the anchor bolt group will then be lowered to the target installation point on the foundation cushion layer, and meet the support angle steel and the fixing angle steel on the target installation point. The shear groove template 14 is connected and fixed with a positioning steel plate (a fixing component commonly used when pre-embedded anchor bolts); the shear groove template 14 is placed close to the inner wall of the shear groove hole 3.2, and the limiting steel (or limiting steel bar) is welded or tied to the anchor bolt 13, so that part of the limiting steel is surrounded by the outside of the shear groove template 14 and pressed against the shear groove template 14, and the positioning and placement of a group of anchor bolt groups and shear groove templates 14 can be completed; the matching nuts on the positioning plate 3 used to temporarily fix the anchor bolts 13 are removed, the telescopic member 4 is extended until the positioning plate 3 is completely separated from the anchor bolts 13, and the mobile frame 2 is moved a distance along the guide rail 1 to position and place the next group of anchor bolt groups and shear groove templates 14.

[0047] By adopting the positioning device, by prefabricating a positioning plate 3 that meets the construction requirements (specifically the accuracy of the anchor bolt hole 3.1 and the shear slot hole 3.2), the distribution accuracy of multiple anchor bolts in the anchor bolt group and the distribution accuracy of the shear slot in the center of the anchor bolt group are controlled, thereby improving the placement accuracy and placement efficiency; through the cooperation of the guide rail 1 and the mobile frame 2, after the guide rail 1 is accurately placed, multiple groups of anchor bolts distributed along a straight line can be placed in batches, thereby improving the placement accuracy and placement efficiency.

[0048] refer to Figure 2The mobile frame 2 in this embodiment includes vertical supports 2.1, transverse supports 2.2 and diagonal supports 2.3. There are 4 vertical supports 2.1, two of which are arranged in parallel in each guide rail 1. The bottom is connected to the guide rail 1 through a walking wheel 5. The walking wheel 5 is movably arranged in the guide rail 1. In order to facilitate the fixing of the mobile frame 2, the walking wheel 5 can be selected with a self-locking function; the transverse support 2.2 is located between adjacent vertical supports 2.1, and the two ends are respectively connected to the adjacent vertical supports 2.1, thereby forming a cubic grid structure; the diagonal support 2.3 is also located between adjacent vertical supports 2.1, and every two diagonal supports 2.3 are crossed in an X shape, and the two sides are respectively connected to the adjacent vertical supports 2.1, so as to improve the stability of the mobile frame 2. After a set of anchor bolts are installed, the mobile frame 2 needs to be moved along the guide rail 1. In order to avoid the oblique brace 2.3 and the installed anchor bolts from interfering with each other, which makes the mobile frame 2 unable to move, the oblique brace 2.3 can be set only on the side parallel to the guide rail 1 on the mobile frame 2, and the oblique brace 2.3 can also be added on the side close to the positive direction of movement among the remaining sides of the mobile frame 2. The positive direction of movement specifically refers to: when multiple groups of anchor bolts are distributed along a straight line, the anchor bolts are generally installed from one end of the straight line to the other end, and the side where the anchor bolts have not been installed is the positive direction of movement (the same applies to the installation of the cross brace 2.2). Of course, since the cross brace 2.2 has a simple structure and is easy to install and disassemble, if the cross brace 2.2 is connected to the vertical brace 2.1 in the form of fasteners, the four sides of the mobile frame 2 can be set with cross braces 2.2. When the position of the mobile frame 2 on the guide rail 1 needs to be changed, the cross brace 2.2 on the obstructed side can be removed.

[0049] The vertical support 2.1, the horizontal support 2.2 and the diagonal support 2.3 can all be made of steel pipe structures, especially the vertical support 2.1, so as to facilitate the installation of the telescopic member 4 selected in this embodiment. Figure 3 The telescopic member 4 used in this embodiment includes a vertical screw rod 4.1 and a T-shaped screw sleeve 4.2. The bottom end of the vertical screw rod 4.1 is slidably inserted into the vertical support 2.1; the T-shaped screw sleeve 4.2 is sleeved outside the vertical screw rod 4.1 and at least partially abuts against the outside of the vertical support 2.1, that is, the bottom edge of the T-shaped screw sleeve 4.2 can abut against the top of the vertical support 2.1, or the section with a smaller outer diameter can be inserted into the vertical support 2.1, and the section with a larger outer diameter can abut against the top of the vertical support 2.1. The position of the T-shaped screw sleeve 4.2 is fixed, but it can rotate. When the T-shaped screw sleeve is rotated, the vertical screw rod 4.1 can be telescoped inside and outside the vertical support 2.1, thereby changing the height of the positioning plate 3.

[0050] In order to improve the stability of the positioning plate 3, a mounting plate 6 is provided on the top of the vertical screw rod 4.1 in this embodiment. The extending direction of the mounting plate 6 is perpendicular to the guide rail 1. The two ends of the bottom surface are respectively placed on the top of different vertical screw rods 4.1 and are welded and fixed to the top of the vertical screw rod 4.1. Of course, the mounting plate 6 can also be directly replaced by a channel steel, which is buckled on the top of the vertical screw rod 4.1. The middle part of the channel steel is used as the mounting plate 6, and the two ends can be on the outside of the vertical screw rod 4.1 to further improve the stability. Figure 4 A straight slot 6.1 is provided on the mounting plate 6, the straight slot 6.1 extending in a direction perpendicular to the guide rail 1, and a high-strength bolt 7 for connecting the positioning plate 3 is provided in the straight slot 6.1.

[0051] Before lowering the anchor bolt group, it is necessary to accurately check the position of the anchor bolt group. If some components in the positioning device have poor assembly accuracy, and the mounting plate 6 and the positioning plate 3 are still connected in a one-to-one correspondence manner using ordinary circular through holes, the final placement accuracy of the anchor bolt group cannot be guaranteed. However, the straight slot 6.1 set above can solve this problem. Before lowering the anchor bolt group, the positioning plate 3 can be moved along the straight slot 6.1, and the position of the anchor bolt group can be fine-tuned before being fixed with high-strength bolts 7 to ensure accurate placement.

[0052] refer to Figure 5 In order to improve the connection stability between the mobile frame 2 and the anchor bolts and prevent the anchor bolts from loosening due to shaking when the mobile frame 2 is fine-tuned, the present embodiment further constructs an anchor bolt support plate 8, which extends in a direction perpendicular to the guide rail 1 and is slidably disposed on a group of relative cross braces 2.2; a rib plate 9 is disposed at the bottom of the anchor bolt support plate 8, and a locking member 10 connected to the cross brace 2.2 is disposed on the rib plate 9. The anchor bolt support plate 8 can slide on the cross brace 2.2 along the extension direction of the guide rail 1 to align with each anchor bolt in the anchor bolt group, and then be fixed with the locking member 10 to provide stable support for the anchor bolt. It should be noted that during the process of lowering and placing the anchor bolt group, the anchor bolt support plate 8 should be slid away or removed.

[0053] The locking member 10 comprises a push rod 10.1, a rotary handle 10.2 and an abutment plate 10.3. The push rod 10.1 is disposed on the rib plate 9 and is threadedly connected to the rib plate 9. The rotary handle 10.2 and the abutment plate 10.3 are respectively located at the two ends of the push rod 10.1. The abutment plate 10.3 is close to the cross brace 2.2, and its shape is adapted to the shape of the cross brace 2.2. For example, if the cross brace 2.2 is a round steel pipe, the abutment plate 10.3 can be an arc-shaped plate. If the cross brace 2.2 is a square steel pipe, the abutment plate 10.3 can be a straight plate or a C-shaped plate. When the rotary handle 10.2 is rotated to make the abutment plate 10.3 away from the cross brace 2.2, the anchor bolt support plate 8 is loosened and can slide. When the rotary handle 10.2 is rotated in the opposite direction to make the abutment plate 10.3 press against the cross brace 2.2, the anchor bolt support plate 8 is locked and cannot slide.

[0054] In addition, a slide groove 11 extending in the same direction as the guide rail 1 can be opened on the top surface of the cross brace 2.2, and a slider 12 is provided at the bottom of the anchor bolt support plate 8. The slider 12 is slidably set in the slide groove 11 to further improve the connection stability between the cross brace 2.2 and the anchor bolt support plate 8.

[0055] The method for accurately placing the anchor bolt group and the shear groove template 14 using the positioning device comprises the following steps:

[0056] (1) Place the guide rail 1 on the foundation cushion, install the mobile frame 2 on the guide rail 1, and then install the telescopic member 4, the positioning plate 3 and the anchor bolt support plate 8 in sequence;

[0057] (2) Extend the telescopic member 4 so that the positioning plate 3 is in a high position, pass the top end of the anchor bolt 13 through the anchor bolt hole 3.1, and secure it with a matching nut, move the anchor bolt support plate 8 to the bottom of the anchor bolt 13, and lock it with the locking member 10;

[0058] (3) Move the mobile frame 2 and the anchor bolt group to the target installation point, use a laser instrument or other equipment to detect the positioning accuracy of the anchor bolt group, and after accurate positioning, fix the mobile frame 2 and remove the anchor bolt support plate 8; shorten the telescopic member 4 to gradually lower the positioning plate 3 to a low position, and then lower the anchor bolt group to the target installation point on the foundation cushion layer, and connect and fix it with the support angle steel, positioning steel plate (a fixing component commonly used when pre-embedded anchor bolts) and other components on the target installation point;

[0059] (4) Place the shear groove template 14 close to the inner wall of the shear groove hole 3.2, weld or tie the limit steel (or limit steel bar) on the anchor bolt 13, refer to Figure 6 , so that part of the limiting steel is arranged on the outside of the shear groove template 14 and is tightly pressed against the shear groove template 14, so that a group of anchor bolts and the shear groove template 14 can be positioned and placed;

[0060] (5) Remove the matching nuts on the positioning plate 3 used to temporarily fix the anchor bolts, extend the telescopic member 4 until the positioning plate 3 and the anchor bolts 13 are completely separated, move the movable frame 2 along the guide rail 1 for a distance, and position and place the next set of anchor bolts and shear groove templates 14.

[0061] Compared with the prior art, the beneficial effects of the present invention are as follows: by prefabricating a positioning plate 3 that meets the construction requirements (specifically the accuracy of the anchor bolt hole 3.1 and the shear slot hole 3.2), the distribution accuracy of multiple anchor bolts in the anchor bolt group and the distribution accuracy of the shear slot in the center of the anchor bolt group are controlled, thereby improving the placement accuracy and efficiency; through the cooperation of the guide rail 1 and the movable frame 2, after the guide rail 1 is accurately placed, multiple groups of anchor bolt groups distributed along a straight line can be placed in batches, thereby improving the placement accuracy and efficiency.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0063] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A movable anchor bolt assembly and shear groove positioning device, characterized in that: include: Guide rails, two groups of which are provided correspondingly, and movable racks are provided on the guide rails; A positioning plate, the positioning plate is located on the top of the mobile frame and is provided with anchor bolt holes and shear slot holes located between the two groups of guide rails; A telescopic member, two ends of which are respectively connected to the moving frame and the positioning plate, and are used to lift the positioning plate.

2. The movable anchor bolt assembly and shear groove positioning device according to claim 1, characterized in that: The mobile frame includes vertical supports, transverse supports and diagonal supports. A plurality of the vertical supports are arranged in parallel and connected to form a cubic grid through the transverse supports. The diagonal supports are crossed in an X shape, and the two sides are respectively connected to the adjacent vertical supports. Travel wheels are provided at the bottom of the vertical supports, and the travel wheels are movably arranged in the guide rails.

3. The movable anchor bolt assembly and shear groove positioning device according to claim 2, characterized in that: The positioning device also includes an anchor bolt support plate, which extends in a direction perpendicular to the guide rail and is slidably arranged on a group of relative cross braces; a rib plate is provided at the bottom of the anchor bolt support plate, and a locking piece connected to the cross brace is provided on the rib plate.

4. The movable anchor bolt assembly and shear groove positioning device according to claim 3, characterized in that: The locking member includes a push rod, a rotary handle and an abutment plate. The push rod is arranged through the rib plate and is threadedly connected to the rib plate. The rotary handle and the abutment plate are respectively located at two ends of the push rod. The abutment plate is close to the cross brace, and its shape is adapted to the outer shape of the cross brace.

5. The movable anchor bolt assembly and shear groove positioning device according to claim 3 or 4, characterized in that: A slide groove extending in the same direction as the guide rail is provided on the top surface of the cross brace, and a slider is provided at the bottom of the anchor bolt support plate, and the slider is slidably arranged in the slide groove.

6. The movable anchor bolt assembly and shear groove positioning device according to claim 1, characterized in that: The telescopic member comprises a vertical screw and a T-shaped screw sleeve, wherein the bottom end of the vertical screw is slidably inserted into the movable frame; the T-shaped screw sleeve is sleeved outside the vertical screw and at least partially abuts against the outside of the movable frame.

7. The movable anchor bolt assembly and shear groove positioning device according to claim 6, characterized in that: A mounting plate is provided on the top of the vertical screw rod, and a straight slot is provided on the mounting plate. The straight slot extends in a direction perpendicular to the guide rail, and a high-strength bolt for connecting the positioning plate is provided in the straight slot.

8. A construction method using the movable anchor bolt assembly and shear groove positioning device according to any one of claims 1 to 7, characterized in that: Includes steps: (1) Place the guide rail on the foundation cushion, and install the mobile frame, telescopic parts, positioning plate and anchor bolt support plate in sequence; (2) Extend the telescopic piece to raise the positioning plate, pass the top of the anchor bolt through the anchor bolt hole, and secure it with the matching nut; Move the anchor bolt support plate to the bottom of the anchor bolt and lock it with the locking piece; (3) Move the mobile frame and the anchor bolt assembly to the target installation point. After accurate positioning, fix the mobile frame and remove the anchor bolt support plate; shorten the telescopic member to lower the positioning plate and accurately install the anchor bolt assembly; (4) The shear groove formwork is placed close to the inner wall of the shear groove hole, and the limiting steel is welded or tied to the anchor bolts so that part of the limiting steel is surrounded and tightened on the outside of the shear groove formwork to complete the positioning and placement of a set of anchor bolts and the shear groove formwork.

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