Anchor bolt position correction structure and position correction method using the same

Abstract

To correct the installation position of an anchor bolt that has become tilted or displaced due to contact by workers during reinforcement work or formwork installation work or contact / interference with arranged reinforcing bars after the anchor bolt has been installed. [Solution] This anchor bolt position correction structure is composed of a base metal fitting that fastens and fixes the reinforcing bar together with a U-bolt, a correction metal fitting with an insertion hole, a full screw, and a battledore bolt, and the tip screw portion of the U-bolt that fastens and fixes the reinforcing bar together with the base metal fitting is inserted into a screw hole in a flat plate formed at one end of the battledore bolt and fixed with a nut, and the other end of the battledore bolt is inserted into the insertion hole in the correction metal fitting, and the fastening positions of two nuts that are attached to the axis of the battledore bolt so that they can be freely threaded between the correction metal fittings are adjusted, thereby correcting the installation position of the anchor bolt.

Description

[Technical Field]

[0001] The present invention relates to a structure for correcting the position of an anchor bolt, which allows easy correction of the installation position of the anchor bolt after installation, and a method for correcting the position using the same. [Background technology]

[0002] In a structure in which anchor bolts are embedded in foundation concrete with their upper threaded portions protruding, the following work sequence is generally performed: a plurality of anchor bolts are supported via support members connected to a base member provided on the foundation ground, and the installation positions of the anchor bolts are determined using a support device that temporarily fixes the anchor bolts with a template via the upper threaded portions of each anchor bolt; then, reinforcement work is performed, formwork is installed, and the foundation concrete is poured; and after the poured foundation concrete has hardened, the template is removed and a base is installed on the upper threaded portions of the anchor bolts.

[0003] However, temporary fixing using the template described above merely supports the anchor bolts together with one template, so the supporting force of the anchor bolts is weak, and after the installation position of the anchor bolt has been determined, there is a problem that the anchor bolt can tilt or become displaced due to contact by workers during reinforcement work or formwork installation work, contact or interference with the reinforcing steel bars, and further due to stresses generated when pouring the foundation concrete or when the poured foundation concrete hardens. Therefore, when installing a base on the upper threaded portion of the anchor bolt, the upper threaded portion of the anchor bolt is struck or heated to correct any misalignment of the anchor bolt (base adjustment). Furthermore, if the anchor bolt is tilted or misaligned, it may become impossible to remove the template, and in this case, the same procedure is carried out.

[0004] However, this work could cause damage to the upper threaded portion of the anchor bolt, making it difficult to install the pillar member, or could cause cracks in the foundation concrete, reducing the foundation's bearing capacity. For these reasons, the conventional method used was to tie the horizontal parts of the rebars to be buried (horizontal rebars or cross rebars, etc.) to the anchor bolts with tie wire before pouring the foundation concrete. However, this method had various issues, such as being time-consuming and resulting in poor work efficiency, the risk of misalignment during tying, the difficulty of correcting the position once the rebars had been tied, the limited space available for work once the formwork was installed making tying work difficult, and variations in tie strength depending on the worker's level of proficiency, resulting in inconsistent quality.

[0005] In order to solve these problems, for example, Literature 1 discloses an anchor bolt support structure including upper and lower rectangular frame plate-shaped mold plate members to which upper and lower ends of a plurality of anchor bolts are attached and which support and position the anchor bolts relative to one another, and a support frame constructed to be disposed between the lower mold plate member and basal concrete laid directly on the ground, wherein the anchor bolt fixing structure includes fixing means provided between each of a plurality of side portions of the upper mold plate member and reinforcing bar members arranged in the vicinity of the side portions, and a fixing structure and fixing method for fixing the anchor bolts to the reinforcing bar members together with the upper mold plate member via the fixing means. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 4122409 Summary of the Invention [Problem to be solved by the invention]

[0007] However, as shown in Figure 4 of Document 1, the anchor bolt fixing structure and fixing method according to Document 1 are a structure and method in which a turnbuckle, which is rotated to adjust the tension, is used, and both ends of the turnbuckle are fixed to the upper plate member and the reinforcing bar by welding, respectively, and the anchor bolt is fixed to the reinforcing bar via the upper plate member, but the joints of each member are only fixed by welding. When welding is used, not only welding equipment is required, but also welding skills are required. In addition, when welding work is performed, the site manager must stay on site for a certain period of time after the welding work is completed to ensure safety and to prevent fires, and welding work cannot be performed in rainy weather. As such, construction methods that require welding result in longer construction times and increased workloads. Furthermore, according to the anchor bolt fixing structure and fixing method disclosed in Document 1, when the foundation concrete is poured, a part of the fixing structure is embedded in the foundation concrete. Therefore, in order to remove the upper mold plate member, one end of which is fixed by welding, from the anchor bolt, the fixing structure must be cut, but in the case of a turnbuckle, for example, cutting is not easy.

[0008] Therefore, in order to solve these problems, the present invention provides an anchor bolt position correction structure and a position correction method using the same that correct the installation position of an anchor bolt that has become tilted or displaced after installation due to contact by workers during reinforcement work or formwork installation work or contact and interference with placed rebar, and that can join components that are not close to each other, correct and fix their positions, and can join components even if there is a difference in height between them, and can join components together and correct and fix their positions not only by a force that attracts them but also by a force that pushes them, and that can be used even if there is an error in the external dimensions of the components to be joined. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention provides the following technical solutions.

[0010] The anchor bolt position correction structure according to the present invention comprises: A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip of the U-bolt that fastens the rebar together with the base metal and is fixed with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, While adjusting the gap between the base metal and the correction metal and adjusting the tension at the same time, correct the installation position of the anchor bolt and fix the anchor bolt in the corrected position. It is characterized by:

[0011] The anchor bolt position correction structure of the present invention connects a template that supports and temporarily fixes the anchor bolt to reinforcing bars arranged near the anchor bolt with a battledore bolt, and corrects and fixes the installation position of the anchor bolt without using any welding. The anchor bolt position correction structure of the present invention is composed of a base metal fitting, a correction metal fitting, and a battledore bolt. The battledore bolt is a fully threaded bolt with a flat plate with a screw hole formed in it attached to one end. This end is fastened to a base metal fitting that fastens the reinforcing bars placed near the anchor bolt together with a U-bolt. In other words, a flat plate with a screw hole formed in it is attached to one end of the battledore bolt, and the tip threaded portion of the U-bolt that is fastened and fixed by the base metal fitting is inserted into the screw hole and fastened.

[0012] Thereafter, the flat plate of the battledore bolt fastened to the base metal is bent to match the fixing position of the correction metal to be fixed to the template. This flat plate portion can be easily bent to any angle by applying force. This allows the battledore bolt to be fastened to both the template and the reinforcing bar even if the template that temporarily fixes the anchor bolt and the reinforcing bar placed near the anchor bolt are not at the same height (horizontal position), for example, when the reinforcing bar is placed below or above the template. In other words, with the flat plate of the battledore bolt fastened to the tip threaded portion of the U-bolt, force is applied to the other end of the battledore bolt to bend the flat plate and direct the other end of the battledore bolt downward or upward toward the correction hardware that is fixed to the template.Even if there is a difference in height between the reinforcing bar and the template, the worker can easily fasten the other end of the battledore bolt to the correction hardware that is fixed to the template without using methods such as welding.

[0013] The correction hardware has holes for fixing it to the template that supports the anchor bolt with screws or the like, and an insertion hole for inserting the battledore bolt. After fixing the correction hardware to the template that supports the anchor bolt with screws, etc., insert the other end of the battledore bolt (fully threaded) into the insertion hole of the correction hardware and tighten it with a nut.

[0014] The other end (fully threaded) of the battledore bolt is fixed with a nut by attaching two nuts to the shaft of the battledore bolt so that they can be threaded forward and backward freely, and then fixing it by sandwiching the correction hardware between them. In other words, the first nut is attached to the battledore bolt in advance, and the other end of the battledore bolt (fully threaded) is inserted into the insertion hole of the correction hardware, after which the second nut is attached, and the two nuts are fixed at any desired location by sandwiching the correction hardware between them. In this case, the fixing position of the nut at the other end (fully threaded) of the battledore bolt can be freely changed on the axis of the battledore bolt.

[0015] In this way, by changing the fixing position using the nut, it is possible to adjust the distance between the base metal and the correction metal, and at the same time, correct the installation position of the anchor bolt while adjusting the tension, and fix the anchor bolt in the corrected position. This eliminates the need to prepare multiple lengths of all-in-one screws to match the spacing between the template and rebar, and is economical because a single component can be used for any spacing.

[0016] Regarding tension adjustment, conventional structures or methods for fastening anchor bolts to reinforcing bars have employed a method of fixing each fastened object by applying a pulling force. In contrast, the anchor bolt position correction structure of the present invention allows the other end (fully threaded portion) of the battledore bolt to be freely inserted back and forth through the insertion hole of the correction hardware fixed to the anchor bolt, and can be fastened with a nut at any desired location, making it possible to adjust the tension not only by the pulling force on the fastening member, but also by the opposite pushing force. This means that the rebar to be fastened can be selected based on both pulling and pushing forces, increasing the range of options and improving work freedom and ease of operation.

[0017] The anchor bolt position correction structure according to the present invention comprises: A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of The base metal is It has a rectangular shape curved in the minor axis direction, Multiple notches are formed on both sides in the longitudinal direction, It has a hole through which the tip screw of the U-bolt can be inserted. Correction hardware is a screw receiving surface having the insertion hole; a fixing surface for fixing to the template; are connected in a state where the cross section is bent into an approximately L-shape, The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip of the U-bolt that fastens the rebar together with the base metal and is fixed with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, While adjusting the gap between the base metal and the correction metal and adjusting the tension at the same time, correct the installation position of the anchor bolt and fix the anchor bolt in the corrected position. It is characterized by:

[0018] The base metal has a rectangular shape curved in the minor axis direction. An insertion hole is formed in the curved top along the longitudinal axis, through which the tip screw portion of the U-bolt is inserted. A plurality of notches are formed on both sides in the longitudinal direction (parts corresponding to the bottom as opposed to the top). By forming a plurality of notches, the reinforcing bars to be fastened and fixed fit into these notched portions, making it possible to further prevent loosening after fastening. Furthermore, the rectangular shape curved in the minor axis direction allows the rod to withstand stronger stress.

[0019] The correction hardware has a shape in which a screw receiving surface having an insertion hole and a fixing surface for fixing to the template are connected in a state where the cross section is bent into a substantially L-shape. The fixing surface for fixing to the template has holes formed therein for fastening to the template with screws, and the screw receiving surface has insertion holes formed therein for inserting the entire threaded portion of the battledore bolt. This screw receiving surface and the fixed surface are connected in a continuous state, but are bent in a roughly L-shaped cross section, and after the entire threaded portion of the shuttlecock bolt is inserted into the insertion hole of the screw receiving surface, the angle of the screw receiving surface is adjusted so that it is perpendicular to the axial direction of the shuttlecock bolt, making it easy to fasten the two nuts by sandwiching the screw receiving surface of the correction hardware. By making the screw receiving surface of the correction hardware perpendicular to the axial direction of the battledore bolt, the two nuts positioned on either side of the screw receiving surface of the correction hardware can easily tighten the battledore bolt, and also prevents the tightened nuts from loosening.

[0020] In addition, the anchor bolt position correction structure of the present invention is effective in that even if part of the position correction structure becomes embedded in the foundation concrete after the foundation concrete has been poured, only the template can be easily removed. Conventionally, when the installation position of an anchor bolt was corrected or fixed, even if an attempt was made to remove the template after pouring the foundation concrete, it was difficult to remove only the template because the corrected or fixed component had been buried. In particular, the invention according to Patent Document 1 uses turnbuckles as shown in FIG. 4 of the same document, but since turnbuckles are difficult to cut, there is a problem that the upper plate member cannot be removed unless the fastening point is cut by welding.

[0021] In contrast, the anchor bolt position correction structure according to the present invention allows the template to be easily removed by removing the correction hardware fixed to the template.

[0022] In addition, the anchor bolt position correction structure according to the present invention does not use welding to fasten the template and the reinforcing bar, so no welding equipment is required and work can be done regardless of the weather. Furthermore, the work can be carried out safely and the construction period can be shortened significantly.

[0023] The anchor bolt position correction structure according to the present invention comprises: A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of The base metal is It has a rectangular shape curved in the minor axis direction, Multiple notches are formed on both sides in the longitudinal direction, It has a hole through which the tip screw of the U-bolt can be inserted. Correction hardware is a screw receiving surface having the insertion hole; a fixing surface for fixing to the template; are connected in a state where the cross section is bent into an approximately L-shape, The connecting part is recessed from all four sides towards its center, The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip of the U-bolt that fastens the rebar together with the base metal and is fixed with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, While adjusting the gap between the base metal and the correction metal and adjusting the tension at the same time, correct the installation position of the anchor bolt and fix the anchor bolt in the corrected position. It is characterized by:

[0024] The correction hardware has a shape in which a screw receiving surface with an insertion hole and a fixing surface that is fixed to the template are connected in a state where the cross section is bent into an approximately L-shape.After the entire threaded portion of the shuttlecock bolt is inserted into the insertion hole of the screw receiving surface, it is fastened with two nuts that sandwich the screw receiving surface of the correction hardware.To make this fastening easier, the angle of the screw receiving surface is adjusted so that it is perpendicular to the axial direction of the shuttlecock bolt. However, because the correction hardware has a bent shape with a cross section that is roughly L-shaped, if this angle adjustment is performed multiple times, it may break at the bent part or lose strength. Therefore, by making the connecting part concave from all four sides towards the center, even if the angle is adjusted frequently, the bending part will not break or lose strength. By improving the bending strength of the correction hardware, it becomes easier to adjust the angle of the battledore bolt relative to the axial direction, and the two nuts positioned on either side of the screw receiving surface of the correction hardware can be easily tightened to the battledore bolt.

[0025] The fully threaded portion of the battledore bolt inserted into the insertion hole in the screw receiving surface of the correction hardware is inserted back and forth freely into the insertion hole in the screw receiving surface to adjust the interval between the template and the reinforcing bar, and at the same time, the tension is adjusted by fastening with a nut. In this way, by adjusting the angle using two components, the correction hardware and the battledore bolt, the angle can be adjusted more accurately and reliably, improving workability. Furthermore, tension adjustment differs from conventional technology in that the spacing can be adjusted not only by the pulling force between the correction hardware and the base hardware that fasten the battledore bolt, but also by the opposite pushing force. In other words, according to the position correction structure of the present invention, the template that temporarily fixes the anchor bolt can be fixed to the reinforcing bar using both pulling force and pushing force, and as a result, the installation position of the anchor bolt can be corrected and fixed using both pulling force and pushing force.

[0026] The method for correcting the position of an anchor bolt according to the present invention comprises the steps of: A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; The anchor bolt position correction structure consists of: The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip of the U-bolt that fastens the rebar together with the base metal and is fixed with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, While adjusting the gap between the base metal and the correction metal and adjusting the tension at the same time, correct the installation position of the anchor bolt and fix the anchor bolt in the corrected position. It is characterized by:

[0027] The method for correcting the position of an anchor bolt according to the present invention comprises the steps of: This is a method for correcting the position of an anchor bolt using the above-described anchor bolt position correction structure.

[0028] The method for correcting the position of an anchor bolt according to the present invention comprises the steps of: A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of The base metal is It has a rectangular shape curved in the minor axis direction, Multiple notches are formed on both sides in the longitudinal direction, It has a hole through which the tip screw of the U-bolt can be inserted. Correction hardware is a screw receiving surface having the insertion hole; a fixing surface for fixing to the template; The anchor bolt position correction structure is connected in a state where the cross section is bent into an approximately L-shape. The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip of the U-bolt that fastens the rebar together with the base metal and is fixed with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, sandwiching the correction hardware between them, the installation position of the anchor bolt can be corrected while adjusting the tension as well as adjusting the gap between the base hardware and the correction hardware, and the anchor bolt is fixed in the corrected position. It is characterized by:

[0029] The method for correcting the position of an anchor bolt according to the present invention comprises the steps of: A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of The base metal is It has a rectangular shape curved in the minor axis direction, Multiple notches are formed on both sides in the longitudinal direction, It has a hole through which the tip screw of the U-bolt can be inserted. Correction hardware is a screw receiving surface having the insertion hole; a fixing surface for fixing to the template; are connected in a state where the cross section is bent into an approximately L-shape, The anchor bolt position correction structure has a connecting part recessed from all four sides toward the center of the connecting part. The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip of the U-bolt that fastens the rebar together with the base metal and is fixed with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, sandwiching the correction hardware between them, the installation position of the anchor bolt can be corrected while adjusting the tension as well as adjusting the gap between the base hardware and the correction hardware, and the anchor bolt is fixed in the corrected position. It is characterized by: [Effects of the Invention]

[0030] The present invention has the following effects.

[0031] 1) The installation position of the anchor bolt can be corrected and fixed in the corrected position by using both pulling and pushing forces without using welding. 2) The position correcting tool and the components related to the position correcting structure can be reused. 3) Since the nuts are not welded before the foundation concrete is poured, they can be readjusted by loosening the nuts even after the foundation concrete has been poured. 4) Work can be carried out even in rainy weather, shortening the construction period. 5) The position correction structure can be easily removed even after the foundation concrete has been poured, making it easy to remove the template. [Brief explanation of the drawings]

[0032] [Figure 1] External view showing one example of a base metal fitting [Figure 2] Right side view of the base metal fitting in Figure 1 [Figure 3] Plan view of the base metal fittings in Figure 1 [Figure 4] A-A' cross section of the base metal fitting in Figure 3 [Figure 5] A front view showing one embodiment of a correction hardware [Figure 6] Rear view of the correction hardware in Figure 5 [Figure 7] Right side view of the correction hardware in Figure 5 [Figure 8] Left side view of the correction hardware in Figure 5 [Figure 9] Plan view of the correction hardware in Figure 5 [Figure 10] Bottom view of the correction hardware in Figure 5 [Figure 11] Side view of battledore bolt [Figure 12] Plan view of the battledore bolt in Figure 11 [Figure 13] A photograph in lieu of a drawing showing the state in which the battledore bolt is fastened to the base metal fittings [Figure 14] A drawing-substitute photograph showing how the battledore bolt is fixed to the fixing hardware with a nut [Figure 15] A drawing-substitute photograph showing the battledore bolt fixed to the fixing hardware with a nut DETAILED DESCRIPTION OF THE INVENTION

[0033] The anchor bolt position correcting structure and method according to the present invention will be described with reference to the drawings.

[0034] The anchor bolt position correction structure of this embodiment is composed of a base metal fitting, a correction metal fitting, and a battledore bolt.

[0035] 1 is a side view of the base metal, FIG. 2 is a right side view of FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG. 4 is a cross-sectional view taken along line A-A' of FIG.

[0036] The base metal fastens and secures the rebar together with the U-bolt. Therefore, as shown in Figure 3, the base metal is curved in the short axis direction, and at its top, an insertion hole is formed along the long axis direction for inserting the tip screw portion of the U-bolt. In addition, a plurality of notches are formed on both sides in the longitudinal direction (parts corresponding to the bottom as opposed to the top). By forming these multiple notches, the reinforcing bars to be fastened and fixed fit into the notched portions, making it possible to further prevent loosening after fastening. Furthermore, the rectangular shape curved in the minor axis direction allows the rod to withstand stronger stress.

[0037] 5 is a front view of the fixing surface for fixing the correction hardware to the template, FIG. 6 is a rear view of FIG. 5, FIG. 7 is a right side view of FIG. 5, FIG. 8 is a left side view of FIG. 5, FIG. 9 is a plan view of FIG. 5, and FIG. 10 is a bottom view of FIG. 5.

[0038] The correction hardware is connected in a state where the fixing surface that is fixed to the template shown in Figure 5 and the screw receiving surface with an insertion hole shown in Figure 9 are bent in an approximately L-shaped cross section, as shown in Figures 7 and 8. The correction hardware has a fixing surface for fixing to the template, on which holes are formed for screwing to the template, and a screw receiving surface for inserting the entire threaded portion of the battledore bolt. After inserting the entire threaded portion of the battledore bolt into the insertion hole of the screw receiving surface, the angle of the screw receiving surface is adjusted so that the screw receiving surface is perpendicular to the axial direction of the battledore bolt so that the screw receiving surface of the correction hardware can be easily fastened with two nuts while sandwiching the screw receiving surface. By making the screw receiving surface of the correction hardware perpendicular to the axial direction of the battledore bolt, the two nuts positioned on either side of the screw receiving surface of the correction hardware can easily tighten the battledore bolt, and also prevents the tightened nuts from loosening.

[0039] As shown in Figures 5 and 9, the connection portion of the correction hardware between the fixing surface and the screw receiving surface is recessed from all four sides of the connection portion toward the center. This shape prevents breakage or loss of strength at the bend, even if the angle is adjusted frequently. In other words, after the entire threaded portion of the battledore bolt is inserted into the insertion hole of the screw receiving surface of the correction hardware, the angle of the screw receiving surface is adjusted so that it is perpendicular to the axial direction of the battledore bolt, making it easier to clamp the screw receiving surface of the correction hardware with two nuts.However, because the cross section is bent into an approximately L-shape, if this angle adjustment is made multiple times, it may break at the bent part or its strength may decrease. Therefore, by making the connecting part concave from all four sides towards the centre, the strength of the correction hardware against bending is improved, the angle of the battledore bolt relative to the axial direction can be easily adjusted, and the two nuts positioned on either side of the screw receiving surface of the correction hardware can be easily fastened to the battledore bolt.

[0040] 11 and 12 are external views of the battledore bolt 3. FIG. The battledore bolt 3 is a fully threaded bolt, and a flat plate with a screw hole formed therein is attached to one end of the bolt.

[0041] The anchor bolt position correction structure consisting of these components inserts the tip screw portion of the U-bolt that fastens the rebar together with the base hardware into the screw hole in the flat plate formed at one end of the battledore bolt and fixes it with a nut, and inserts the other end of the battledore bolt into the insertion hole in the correction hardware, and adjusts the fastening position of two nuts that are attached so that they can be freely threaded on the shaft of the battledore bolt with the correction hardware sandwiched between them. This allows the installation position of the anchor bolt to be corrected while adjusting the gap between the base metal and the correction metal and simultaneously adjusting the tension, and then the anchor bolt can be fixed in the corrected position.

[0042] In other words, the method for correcting the position of an anchor bolt is as follows: the template that supports and temporarily fixes the anchor bolt and the reinforcing bars placed near the anchor bolt are connected with battledore bolts, as in the example shown in Figures 13 to 15, and the installation position of the anchor bolt is corrected and fixed without using any welding.

[0043] The reinforcing bars placed near the anchor bolts are fastened together with U-bolts using base hardware. The tip threaded portion of U-bolt 1, which is fastened and fixed by the base metal fitting, is inserted into a screw hole formed in the flat plate at the tip of the battledore bolt, and fastened and fixed. The flat plate of the battledore bolt is bent to match the fixing position of the correction hardware to be fixed to the template. The flat plate can be easily bent to any angle by applying force.

[0044] For example, even if the template that temporarily fixes the anchor bolt and the reinforcing bar placed near the anchor bolt are not at the same height (horizontal position), such as when the reinforcing bar is placed below or above the template, the battledore bolt can be fastened to the template and the reinforcing bar, respectively. With the battledore bolt fastened to the tip thread of the U-bolt, force is applied to the other end of the battledore bolt to bend the flat plate and direct the other end of the battledore bolt downward or upward toward the correction hardware that is fixed to the template.Even if there is a difference in height between the reinforcing bar and the template, the worker can easily fasten the other end of the battledore bolt to the correction hardware that is fixed to the template without using methods such as welding.

[0045] The other end (fully threaded) of the battledore bolt is pointed toward the correction hardware that will be fixed to the template, and the correction hardware is then attached to the template on the extension of that line. The fixing surface of the correction hardware has holes formed for screwing into the template, so the fixing surface of the correction hardware is fixed to the template using a screw and impact.

[0046] A through hole is formed on the screw receiving surface of the correction hardware, through which the other end (fully threaded) of the battledore bolt is inserted, and the other end (fully threaded) of the battledore bolt is inserted into this through hole. Before inserting the other end (fully threaded) of the battledore bolt into the insertion hole, attach the first nut to the battledore bolt in advance. Insert the other end of the battledore bolt (fully threaded) into the insertion hole of the correction hardware, then attach the second nut. Use these two nuts to secure the battledore bolt to the correction hardware at any point, sandwiching the correction hardware between them. The fixed position of this nut can be freely changed on the axis of the battledore bolt.

[0047] By adjusting the fastening positions of two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, sandwiching the correction hardware between them, the worker can easily fasten the other end of the battledore bolt to the correction hardware that secures it to the template, without using methods such as welding, even if there is a difference in height between the reinforcing bar and the template. In addition, by changing the fixing position with the nut, the interval between the base metal and the correction metal can be adjusted while adjusting the tension, and the installation position of the anchor bolt can be corrected by both pulling and pushing forces, and the anchor bolt can be fixed in the corrected position.

[0048] With the anchor bolt position correction structure of this embodiment, even if part of the position correction structure becomes embedded in the foundation concrete after the foundation concrete is poured, the two nuts that fasten the battledore bolt inserted into the insertion hole of the correction hardware are not embedded in the foundation concrete, so the nuts can be loosened and the template alone can be easily removed.

[0049] Since no welding is used to fasten the template and rebar, no welding equipment is required, work can be done regardless of the weather, and construction time is extremely short. There is no need to prepare multiple lengths of all-in-one screws to match the spacing between the template and rebar, and one component can be used for any spacing, making it economical.

Claims

1. A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of Correction hardware is a screw receiving surface having an insertion hole; a fixing surface for fixing to the template; are connected in a state where the cross section is bent into an approximately L-shape, The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip screw portion of the U-bolt that fastens the reinforcing bar together with the base metal and secured with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, While adjusting the gap between the base metal and the correction metal and adjusting the tension at the same time, correct the installation position of the anchor bolt and fix the anchor bolt in the corrected position. A structure for correcting the position of an anchor bolt.

2. A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of The base metal is It has a rectangular shape curved in the minor axis direction, Multiple notches are formed on both sides in the longitudinal direction, It has a hole through which the tip screw of the U-bolt can be inserted. Correction hardware is a screw receiving surface having an insertion hole; a fixing surface for fixing to the template; are connected in a state where the cross section is bent into an approximately L-shape, The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip screw portion of the U-bolt that fastens the reinforcing bar together with the base metal and secured with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, While adjusting the gap between the base metal and the correction metal and adjusting the tension at the same time, correct the installation position of the anchor bolt and fix the anchor bolt in the corrected position. A structure for correcting the position of an anchor bolt.

3. A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of The base metal is It has a rectangular shape curved in the minor axis direction, Multiple notches are formed on both sides in the longitudinal direction, It has a hole through which the tip screw of the U-bolt can be inserted. Correction hardware is a screw receiving surface having an insertion hole; a fixing surface for fixing to the template; are connected in a state where the cross section is bent into an approximately L-shape, The part where the screw receiving surface and the fixed surface are connected is recessed from all four sides towards the center, The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip screw portion of the U-bolt that fastens the reinforcing bar together with the base metal and secured with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, While adjusting the gap between the base metal and the correction metal and adjusting the tension at the same time, correct the installation position of the anchor bolt and fix the anchor bolt in the corrected position. A structure for correcting the position of an anchor bolt.

4. A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of Correction hardware is a screw receiving surface having an insertion hole; a fixing surface for fixing to the template; The anchor bolt position correction structure is connected in a state where the cross section is bent into an approximately L-shape. The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip screw portion of the U-bolt that fastens the reinforcing bar together with the base metal and secured with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening position of the two nuts that are attached to the shaft of the battledore bolt so that they can be freely threaded, While adjusting the gap between the base metal and the correction metal and adjusting the tension at the same time, correct the installation position of the anchor bolt and fix the anchor bolt in the corrected position. A method for correcting the position of an anchor bolt.

5. A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of The base metal is It has a rectangular shape curved in the minor axis direction, Multiple notches are formed on both sides in the longitudinal direction, It has a hole through which the tip screw of the U-bolt can be inserted. Correction hardware is a screw receiving surface having an insertion hole; a fixing surface for fixing to the template; The anchor bolt position correction structure is connected in a state where the cross section is bent into an approximately L-shape. The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip screw portion of the U-bolt that fastens the reinforcing bar together with the base metal and secured with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening positions of the two nuts that are attached to the shaft of the battledore bolt so that they can be threaded freely between the correction hardware, the installation position of the anchor bolt is corrected while adjusting the tension and adjusting the gap between the base hardware and the correction hardware, and the anchor bolt is fixed in the corrected position. A method for correcting the position of an anchor bolt.

6. A base metal fastening that fastens the rebar together with the U-bolt, A correction hardware that is fixed to the template that supports the anchor bolt and has an insertion hole; A battledore bolt consisting of a full screw and having a flat plate with a screw hole formed on one end attached thereto; It consists of The base metal is It has a rectangular shape curved in the minor axis direction, Multiple notches are formed on both sides in the longitudinal direction, It has a hole through which the tip screw of the U-bolt can be inserted. Correction hardware is a screw receiving surface having an insertion hole; a fixing surface for fixing to the template; are connected in a state where the cross section is bent into an approximately L-shape, The part where the screw receiving surface and the fixed surface are connected is recessed from all four sides towards the center, making it a structure for correcting the position of the anchor bolt. The screw hole in the flat plate formed at one end of the battledore bolt is inserted into the tip screw portion of the U-bolt that fastens the reinforcing bar together with the base metal and secured with a nut. Insert the other end of the battledore bolt into the insertion hole of the correction hardware, By adjusting the fastening positions of the two nuts that are attached to the shaft of the battledore bolt so that they can be threaded freely between the correction hardware, the installation position of the anchor bolt is corrected while adjusting the tension and adjusting the gap between the base hardware and the correction hardware, and the anchor bolt is fixed in the corrected position. A method for correcting the position of an anchor bolt.

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