Construction structure and construction method for anchor bolt

Abstract

To provide a construction structure and a construction method for anchor bolts that can easily and securely fix an exposed pedestal or the like without any stress and also secure required strength as well as shear force and axial force.SOLUTION: The present invention relates to a construction structure for an anchor bolt 1 that comprises a shaft part 10 embedded in a base 7 and a projection part 11 projected from the base. The anchor bolt is provided with an adjustment part 13 on a shaft part side of the projection part. In a state where at least a portion of the shaft part of the anchor bolt is joined to an embedded plate 4 provided horizontally, it is embedded in the base together with the embedded plate. A movable space 71 is provided around the anchor bolt to a predetermined depth from the surface of the base.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an anchor bolt installation structure and installation method. [Background technology]

[0002] In foundation construction, exposed column bases and the like are generally fixed by fastening them with nuts or the like to anchor bolts embedded in the concrete foundation.

[0003] For this anchor bolt, the bolt axial force (axial force) is calculated using the strength of the effective cross-sectional area of ​​the bolt thread, and the shear force (shear force) is calculated using the shear strength of the bolt axial cross-sectional area and the bearing strength of the hole side.In this case, the diameter of the anchor bolt insertion hole provided in the base plate or other connecting member is stipulated in the Building Standards Act (Building Standards Act Notification No. 1456) as a hole clearance of the bolt diameter + 5 mm or less.

[0004] However, if the friction with the concrete is insufficient, in order to prevent slippage in the hole clearance, it becomes necessary to weld a washer plate or the like with a hole clearance of 1 mm or less, as stipulated in Article 68, paragraph 4 of the Enforcement Order of the Building Standards Act, to the base plate as a means of joining steel materials, which are an important part of the structural strength.

[0005] Several proposals have been made to address this problem. For example, Patent Document 1 proposes a construction method in which large clearance holes are filled with mortar to transmit shear forces to anchor bolts, and Patent Document 2 proposes a construction method in which a non-slip steel plate is welded to the back surface of a base plate and the steel plate and foundation are integrated with mortar to transmit shear forces to the foundation. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 01-203523 [Patent Document 2] Japanese Patent Publication No. 2020-143444 [Patent Document 3] Patent Publication No. 2021-188670 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the proposals in the above Patent Documents 1 and 2 do not comply with the Building Standards Act because the hole clearance is larger than the 5 mm hole clearance stipulated in Notification No. 1456 of the Building Standards Act, and the method involves filling the hole with mortar or the like and transmitting shear through its bearing pressure, and therefore requires certification by the Minister of Land, Infrastructure, Transport and Tourism.

[0008] The present inventors have proposed a fastening bolt in Patent Document 3 as a bolt used to join multiple overlapping members to be joined. However, it has been difficult to apply this fastening bolt to an anchor bolt that has a long shank and is used by embedding the shank in the foundation.

[0009] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide an anchor bolt installation structure and installation method that can easily and reliably fix exposed column bases, etc. without stress, and can ensure the required strength for both shear force and axial force. [Means for solving the problem]

[0010] The anchor bolt installation structure and installation method of the present invention have been made to solve the above technical problems, and are characterized as follows.

[0011] First, the anchor bolt installation structure of the present invention is an anchor bolt installation structure including a shaft portion embedded in a foundation and a protruding portion protruding from the foundation, The anchor bolt has an adjustment portion provided on the shaft portion side of the protrusion and a threaded portion provided on the tip end side, a tapered portion is provided at an end of the adjustment portion on the side of the screw portion, a shaft diameter of the adjustment portion is larger than a shaft diameter of the threaded portion, and a shaft diameter of the adjustment portion protruding from the foundation is equal to or larger than a dimension obtained by subtracting an allowable clearance from a diameter of a bolt insertion hole provided in a member to be joined for the anchor bolt, and is smaller than the diameter of the bolt insertion hole, The shank of the anchor bolt is joined to a horizontally disposed embedding plate, and the anchor bolt is embedded in the foundation together with the embedding plate, A movable space is provided around the anchor bolt from the surface of the foundation to a predetermined depth. Secondly, in the anchor bolt installation structure of the first invention, it is preferable that the shanks of the plurality of anchor bolts are joined to one of the embedded plates. Third, in the anchor bolt installation structure of the first or second invention, it is preferable that the allowable clearance is 1 mm or less. Fourth, in the anchor bolt installation structures of the first to third inventions, it is preferable that the distance between the side surface of the anchor bolt and the foundation in the movable space is in the range of 4 to 7 mm. Fifth, in the anchor bolt installation structures of the first to fourth inventions, it is preferable that the joined member is an exposed column base, and that the anchor bolt and the base plate of the exposed column base are fixed together with a nut. Sixth, a method for installing an anchor bolt of the present invention includes an anchor bolt installation step of joining the shank of the anchor bolt described in claim 1 to a horizontal buried plate and installing it upright at a predetermined position; an anchor bolt positioning step of covering the anchor bolt with a pipe, installing an anchor positioning jig on the upper side of the anchor bolt, and sandwiching the pipe between the embedding plate and the anchor positioning jig; a formwork installation process of installing a formwork around the anchor bolt; a concrete pouring step of pouring concrete into the formwork and allowing it to harden and cure; The method is characterized by having a component removal step of removing the formwork, the anchor positioning jig, and the pipe after the concrete has hardened. Seventh, in the anchor bolt installation method of the sixth invention, in the anchor bolt installation step, a plurality of the anchor bolts are joined to one of the embedded plates, In the anchor bolt positioning step, it is preferable that the pipe is placed over each of the plurality of anchor bolts, and one anchor positioning jig is installed above each of the anchor bolts. Eighth, in the method for installing an anchor bolt according to the sixth or seventh aspect of the present invention, it is preferable to further include a grout injection step of, after the member removing step, removing the pipe while the joined members are in a joined state, and injecting grout into a movable space formed by the pipe. [Effects of the Invention]

[0012] The anchor bolt of the present invention allows for easy and reliable insertion and fixation of connecting members without stress, ensuring the necessary strength for both shear force and axial force. Furthermore, since it is now possible for the anchor bolt to bear the horizontal force applied to the exposed column base being constructed, it can be freely designed in accordance with the "Guidelines for Designing Steel Structure Joints (Architectural Institute of Japan)" in accordance with the Building Standards Act. This means that there are no design restrictions or designated joint construction outsourcing requirements, as there are for exposed column base construction certified by the Minister of Land, Infrastructure, Transport and Tourism. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a schematic view showing an embodiment of an anchor bolt according to the present invention. [Figure 2] FIG. 10 is a schematic view showing another embodiment of the anchor bolt of the present invention. [Figure 3] 1A is a schematic diagram of the anchor bolt installation structure of the present invention, and FIG. 1B is a top view of FIG. 1A. [Figure 4] 1A and 1B are explanatory views of the construction steps of the anchor bolt construction method of the present invention, in which FIG. 1A shows the anchor bolt installation step, and FIG. 1B shows the anchor bolt positioning step. [Figure 5]1A and 1B are explanatory diagrams of the construction steps of the anchor bolt construction method of the present invention, in which (C) shows the formwork installation step, (D) shows the concrete pouring step, and (E) shows the member removal step. [Figure 6] 1(a) is a schematic diagram showing the state in which a base plate is installed on an anchor bolt, and FIG. 1(b) is a schematic diagram showing the state in which grout has been injected and solidified and the bolts are joined. [Figure 7] FIG. 10 is a schematic diagram showing an embodiment in which two embedded plates are joined to one anchor bolt. DETAILED DESCRIPTION OF THE INVENTION

[0014] First, the anchor bolt used in the construction structure of the present invention will be described in detail with reference to the drawings. Figure 1 is a schematic diagram showing one embodiment of the anchor bolt of the present invention.

[0015] The anchor bolt 1 of this embodiment is an anchor bolt that has a shaft portion 10 that is embedded in the foundation and a protruding portion 11 that protrudes from the foundation, and is fixed by inserting the protruding portion 11 into a joining member such as a base plate, and has an adjustment portion 13 on the shaft portion 10 side of the protruding portion 11 and a threaded portion 12 on the tip side, and a tapered portion 14 on the end of the adjustment portion 13 on the threaded portion 12 side.

[0016] The shank 10 is the part that is at least partially embedded in the foundation when the anchor bolt 1 is installed in the foundation, and its length and diameter are not limited and can be determined appropriately depending on the design of the foundation. Furthermore, an anchor plate 3 as shown in Figure 1 can be attached to one end of the shank 10 to prevent it from coming loose from the foundation. Furthermore, the lower end of the anchor bolt can be bent into a hook shape or made into a deformed rebar as shown in Figure 2 to increase adhesion to concrete.

[0017] The protruding portion 11 is the portion that protrudes from the surface of the foundation when the anchor bolt 1 is installed in the foundation, and this protruding portion 11 is inserted into a bolt insertion hole 91 provided in the base plate 9 of the joined member such as an exposed column base, and fixed with a nut or the like. The protruding portion 11 is provided with an adjustment portion 13 and a threaded portion 12, and the end of the adjustment portion 13 on the threaded portion 12 side is provided with a tapered portion 14. The shaft diameter of the adjustment portion 13 is larger than the shaft diameter of the threaded portion 12.

[0018] The adjustment portion 13 is a portion that is located on the inner wall surface of the bolt insertion hole 91 of the base plate 9 when joining of the base plate 9 is completed as shown in Figure 6(a). The axial length of the adjustment portion 13 in the anchor bolt 1 of this embodiment is a length that provides the structurally required bearing contact surface with the inner wall surface of the bolt insertion hole 91 of the base plate 9. Here, the base plate 9 is set to a thickness required by design that is longer than the length that provides the structurally required bearing contact surface with the inner wall surface of the bolt insertion hole 91, but if the tapered portion 14 or the adjustment portion 13 protrudes from the base plate 9, adjustment is made by inserting a spacer 82 as shown in Figure 6(b).

[0019] In addition, since a thickness (required thickness for support) is required for the support portion of the adjustment portion 13 and the bolt insertion hole 91 of the base plate 9, etc. to withstand the shear force acting on the base plate 9, etc., the thickness of the base plate 9, etc., only needs to be greater than the required thickness for support, and may be made even thicker depending on other conditions such as bending force.

[0020] The allowable clearance in the present invention refers to the difference between the diameter of the bolt insertion hole 91 and the diameter of the adjustment portion 13 when the anchor bolt 1 is inserted into the bolt insertion hole 91 of the base plate 9 or the like. In this embodiment, when a shear force is transmitted to the anchor bolt 1, the allowable clearance is 1 mm or less as specified in Article 68-4 of the Enforcement Order of the Building Standards Act.

[0021] The threaded portion 12 is provided to fix the base plate 9 etc. by screwing in the nut 8, and also to temporarily hold the base plate 9 etc. in the position of the threaded portion 12 and ensure play for the bolt insertion holes 91 before the base plate 9 etc. is fully tightened. This makes it possible, for example, to insert the bolts up to the threaded portion 12 into all of the multiple bolt insertion holes 91 formed in the base plate 9 etc. Furthermore, there are no particular restrictions on the thread diameter of the threaded portion 12 as long as it is smaller than the diameter of the adjustment portion 13, and the thread pitch etc. can also be determined in accordance with the nut 8 that fixes the base plate 9 etc.

[0022] Furthermore, the tapered portion 14 provided at the boundary between the adjustment portion 13 and the threaded portion 12 is provided to facilitate the transition within the bolt insertion hole 91 from the threaded portion 12 to the adjustment portion 13 due to the weight of the joined members or during the final tightening process after the threaded portion 12 of the anchor bolt 1 has been inserted up to the position of the thickness portion of the base plate 9 or the like. For example, if the tapered portion 14 is not provided, a step will occur and a smooth transition from the threaded portion 12 to the adjustment portion 13 will not be possible.

[0023] From the above perspective, it is desirable to set the tapered portion 14 to have as gentle a slope as possible in the axial longitudinal direction, but since the axial length of the tapered portion 14 is included in the length of the adjustment portion 13, it is necessary to set it taking into consideration the height of the spacer 82, washer 81, etc. to be inserted. Also, the angle of the tapered portion 14 is desirably about 30° with respect to the axis, taking into consideration the friction and resistance between the inner wall of the bolt insertion hole 91 and the tapered portion 14. Note that if the tapered portion cannot be corrected due to the weight of the joined parts, a strong correction force can be obtained by tightening a nut.

[0024] According to the anchor bolt 1 of this embodiment, by providing the protrusion 11 configured as described above, for example, when a plurality of anchor bolts 1 of this embodiment are arranged on the foundation 7 and these plurality of anchor bolts 1 are fixed by inserting them into the bolt insertion holes 91 formed in the base plate 9 or the like, even if stress is applied to the insertion due to misalignment of the anchor bolt 1 or misalignment of the bolt insertion holes 91 formed in the base plate 9 or the like, it is possible to force the base plates 9 and the like, which have different sizes and numbers of bolt insertion holes 91, to fit the anchor bolt 1, even if the anchor bolt 1 has been installed with high precision.

[0025] The anchor bolt installation structure of the present invention using the anchor bolt 1 will be described in detail below with reference to the drawings. Fig. 3(A) is an explanatory cross-sectional view of the installation structure using the anchor bolt 1, and Fig. 3(B) is a top view thereof. In the installation structure of this embodiment, the shanks 10 of four anchor bolts 1 are restrained by embedding plates 4 at predetermined intervals and are embedded in a foundation 7 in this state. Specifically, the vicinity of the lower end and the middle portion of the shank 10 of the anchor bolt 1 are fixed by two embedding plates 4, and the shanks 10 and embedding plates 4 are embedded in the foundation 7. The spacing and positions of the restrained multiple anchor bolts 1 are set to match the spacing of bolt insertion holes 91 provided in the base plate 9 or the like to be joined.

[0026] Furthermore, in the anchor bolt installation structure of this embodiment, a movable space 71 is provided around the anchor bolt 1, extending from the surface of the foundation 7 to the depth of the buried plate 4 provided in the middle of the shaft 10. The distance between the side surface of the anchor bolt 1 and the foundation 7 in the movable space 71 is preferably set to a range of 4 to 7 mm. By providing the movable space 71 according to the above conditions around the upper end of the anchor bolt 1, movement of the anchor bolt 1 is permitted within the range of the movable space 71 when a horizontal load is applied to the anchor bolt 1 due to a corrective force for position adjustment. This allows for smooth installation of the base plate 9 and the like relative to the adjustment portion 13 of the anchor bolt 1. The depth of the movable space 71 from the surface of the foundation 7 is not limited; it may be a depth reaching the buried plate 4 as shown in FIG. 3(A), or it may be a depth not reaching the buried plate 4 as long as the anchor bolt 1 can move within a predetermined range.

[0027] Next, the anchor bolt installation method of the present invention will be described in detail with reference to the drawings. Figures 4(A), (B), and 5(C) to (E) are explanatory views of the installation steps of the anchor bolt installation method of the present invention. The installation method of this embodiment includes an anchor bolt installation step, an anchor bolt positioning step, a formwork installation step, a concrete pouring step, and a member removal step.

[0028] (Anchor bolt installation process) In the anchor bolt installation process of this embodiment, first, four anchor bolts 1 are fixed to an embedded plate 4, as shown in FIGS. 3(B) and 4(A). Specifically, holes for inserting the anchor bolts 1 are pre-formed in the embedded plate 4 at predetermined positions, and the shanks 10 of the anchor bolts 1 are inserted and fixed through these holes. In this embodiment, two embedded plates 4 are provided near the bottom ends and in the middle of each of the four anchor bolts 1. The method of fixing the anchor bolts 1 to the embedded plate 4 is not particularly limited. For example, as shown in FIG. 4(A), a threaded portion 12 can be provided in part of the shank 10, and the anchor bolts can be fixed by clamping them from above and below with nuts 8, or by caulking, which forcibly inserts the anchor bolts into holes smaller than the shank diameter. Note that to increase the contact area between the anchor bolts 1 and the concrete and ensure that the anchor bolts 1 do not come loose, it is preferable to join an anchor plate 3 to the embedded plate 4.

[0029] (Anchor bolt positioning process) In the anchor bolt positioning step, as shown in FIG. 4(B), first, a pipe 5 is placed over the top of each anchor bolt 1, and then an anchor positioning jig 6 is clamped and fixed between the anchor bolt 1 and the top of the covered pipe 5 with a nut 8. In the anchor bolt positioning step of this embodiment, the pipe 5 is fixed by being sandwiched between the anchor positioning jig 6 and the embedded plate 4 provided in the middle of the anchor bolt 1. In this step, the thickness of the pipe 5 placed over the anchor bolt 1 (the difference between the outer diameter and the inner diameter) determines the dimension of the movable space 71 provided above the anchor bolt 1 in the present invention, so the inner diameter of the covering pipe 5 is matched to the outer diameter of the anchor bolt 1, and the dimension of the outer diameter is set according to the design. In addition, it is preferable to seal the gap between the pipe 5 and the embedded plate 4 with caulking or the like to prevent concrete from entering, and to apply a concrete release agent to the outer surface of the pipe 5.

[0030] The anchor positioning jig 6 is provided to determine the positions and spacing of the multiple anchor bolts 1 protruding from the foundation 7, i.e., to more accurately determine positions that match the positions and spacing of the bolt insertion holes 91 provided in the base plate 9 or the like, and by using it together with the buried plate 4 that has been fixed in advance to bundle the anchor bolts 1, it becomes possible to erect the anchor bolts 1 in the accurate positions as designed.

[0031] Next, the anchor bolts 1 bound by the embedding plate 4 and anchor positioning jig 6 are erected so that they can stand on their own in a predetermined installation position. This erection position needs to be determined accurately because it is directly related to the installation position of the superstructure to be fixed to the foundation 7. Therefore, it is preferable, for example, to install a foundation bottom plate or the like indicating the erection position of the anchor bolts 1 in a predetermined, accurate position and then erect the anchor bolts 1 on top of that. In addition, the precision of the tip position and height of the anchor bolts 1 is also important, so they are adjusted according to the design. When erecting, for example, a mark can be drawn in the center of the anchor positioning jig 6, and the position can be adjusted using this mark as a guide.

[0032] (Formwork installation process) Next, as shown in Figure 5(C), formwork 72 is installed around the anchor bolt 1 according to the design. At this time, the anchor bolt 1 and embedded plate 4 are installed so that they are stable within the formwork 72. When installing the formwork 72, the foundation 7 formed by the formwork 72 will be the foundation for the members to be joined that will be fixed to the anchor bolt 1, so the formwork 72 is installed according to the design of the foundation 7, taking into consideration its shape, strength, etc.

[0033] (Concrete pouring process) In the concrete pouring process, as shown in FIG. 5(D), concrete 7 is poured into the formwork 72 installed in the formwork installation process up to a height at which the adjustment portion 13 of the anchor bolt 1 is exposed, and then the concrete is hardened and cured.

[0034] (Component removal process) Finally, after confirming that the concrete 7 has hardened, the formwork 72, anchor positioning jig 6, and pipe 5 are removed as shown in Figure 5(E). After the concrete 7 has hardened, it is preferable to apply leveling grout 73 to the center of the surface of the foundation 7. The leveling grout 73 is used to install the superstructure at an accurate height and is made of a cement-based hardening material such as mortar. By using the construction method of the above steps, the anchor bolt installation structure of the present invention can be easily and reliably constructed.

[0035] Furthermore, an exposed column base, for example, can be suitably fixed to the anchor bolt installation structure constructed by the anchor bolt installation method of the present invention having the above-described configuration. When fixing and installing an exposed column base, first, a protective cap is placed on the threaded portion 12 of the anchor bolt 1, and the exposed column base is guided so that the threaded portion 12 of the anchor bolt 1 is inserted into the bolt insertion hole 91 of the base plate 9.

[0036] When the tapered portion 14 of the anchor bolt 1 is engaged with the bolt insertion hole 91 of the base plate 9, the protective cap is removed and the nut 8 is tightened. As a result, the bolt insertion hole 91 of the base plate 9 is inserted up to the adjustment portion 13 due to the action of the tapered portion 14. At this time, if the contact between the bolt insertion hole 91 of the base plate 9 and the tapered portion 14 is particularly tight, the anchor bolt 1 moves due to the movable space 71 provided around the upper part of the anchor bolt 1, and the adjustment portion 13 is inserted into the tapered portion 14 without stress, as shown in Figure 6(a), and the base plate 9 is placed on the upper surface of the level grout 73.

[0037] Next, the exposed column base is re-plumbed vertically, a retaining formwork is attached around the base plate 7, and liquid grout mortar 74 is poured in to fill the movable space 71 of the anchor bolt 1 and the space between the base plate 7 and the concrete 9. After the grout mortar 74 has hardened, the retaining formwork is removed, and the anchor bolt 1 and base plate 9 are joined with a washer 81 and a double nut 8, as shown in Figure 6(b). At this time, if the thickness of the base plate 9 does not reach the upper end of the tapered portion 21 of the anchor bolt 1, a spacer 82 is inserted to adjust the height. This makes it possible to reliably join the exposed column base to the foundation 7 constructed using the anchor bolt 1 according to the present invention.

[0038] The construction structure and construction method of the anchor bolt of the present invention have been described above based on the embodiments, but the present invention is not limited to the above embodiments, and various modifications are possible within the scope of the gist of the present invention.

[0039] For example, in the above embodiment of the anchor bolt installation structure and installation method, the installation of four anchor bolts 1 is described, but the number can be set appropriately based on the design depending on the size and shape of the superstructure to be fixed to the foundation 7.

[0040] In addition, in the embodiment of the anchor bolt installation method described above, two buried plates 4 for bundling the anchor bolts 1 are provided, one in the middle part and one at the bottom end of the anchor bolt 1, but the number and positions of the buried plates 4 can be determined appropriately depending on the length and design of the anchor bolt 1, and there may be one plate or three or more plates.

[0041] Furthermore, in the above embodiment, four anchor bolts 1 are joined to one embedding plate 4 and embedded, but as shown in Figure 7, one fixing plate 3 can also be joined to one anchor bolt 1 and embedded. This generates a leveling force, making it possible to prevent damage to the concrete during curing. Also, to more reliably prevent damage to the concrete due to the leveling force, an embedding plate 4 can be provided.

[0042] According to the anchor bolt installation structure and anchor bolt installation method of the present invention having the above-mentioned configurations, an exposed column base or the like can be fixed easily and accurately without stress, and the required strength for both shear force and axial force can be ensured. [Explanation of symbols]

[0043] 1 anchor bolt 10 Shaft 11 Protrusion 12 Threaded section 13 Adjustment part 14 Tapered section 3 Fixing plate 4 Buried Plate 5 Pipes 6 Positioning jig 7 Foundation (concrete) 71 Movable space 72 Formwork 73 Level Grout 74 Grout 8 nuts 81 Washer 82 spacer 9 Base Plate 91 Bolt insertion hole

Claims

1. An anchor bolt installation structure having a shaft portion embedded in a foundation and a protruding portion protruding from the foundation, The anchor bolt has an adjustment portion provided on the shaft portion side of the protrusion and a threaded portion provided on the tip end side, a tapered portion is provided at an end of the adjustment portion on the side of the screw portion, a shaft diameter of the adjustment portion is larger than a shaft diameter of the threaded portion, and a shaft diameter of the adjustment portion protruding from the foundation is equal to or larger than a dimension obtained by subtracting an allowable clearance from a diameter of a bolt insertion hole provided in a member to be joined for the anchor bolt, and is smaller than the diameter of the bolt insertion hole, The anchor bolt is embedded in the foundation together with a horizontally disposed embedding plate, with at least a portion of the shank of the anchor bolt joined to the horizontally disposed embedding plate, An anchor bolt installation structure characterized in that a movable space is provided around the anchor bolt from the surface of the foundation to a predetermined depth.

2. 2. The anchor bolt installation structure according to claim 1, wherein a plurality of the anchor bolts are joined to the embedded plate.

3. 2. The anchor bolt installation structure according to claim 1, wherein the allowable clearance is 1 mm or less.

4. 2. The anchor bolt installation structure according to claim 1, wherein the distance between the side surface of the anchor bolt and the foundation in the movable space is in the range of 4 to 7 mm.

5. 2. The anchor bolt installation structure according to claim 1, wherein the joined member is an exposed column base, and the anchor bolt and the base plate of the exposed column base are fixed together with a nut.

6. an anchor bolt installation step of joining the shank of the anchor bolt according to claim 1 to a horizontal buried plate and installing it upright at a predetermined position; an anchor bolt positioning step of covering the anchor bolt with a pipe, installing an anchor positioning jig on the upper side of the anchor bolt, and sandwiching the pipe between the embedding plate and the anchor positioning jig; a formwork installation process of installing a formwork around the anchor bolt; a concrete pouring step of pouring concrete into the formwork and allowing it to harden and cure; a component removal step of removing the formwork, the anchor positioning jig, and the pipe after the concrete has hardened.

7. In the anchor bolt installation step, a plurality of the anchor bolts are joined to one of the embedded plates, 7. The anchor bolt installation method according to claim 6, wherein in the anchor bolt positioning step, the pipe is placed over each of the plurality of anchor bolts, and one anchor positioning jig is installed on an upper side of each of the anchor bolts.

8. 7. The anchor bolt installation method according to claim 6, further comprising a grout injection step of injecting grout into a movable space formed by removing the pipe after the member removing step, while the joined members are in a joined state.

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