JP4449638B2 - Anchor bolt positioning jig - Google Patents

Description

  The present invention relates to an anchor bolt positioning jig, and in particular, when anchor bolts are embedded in foundation concrete by post-construction, the anchor bolts to be embedded in a pilot hole formed in a vertical direction in foundation concrete are positioned. The present invention relates to an anchor bolt positioning jig.

  Anchor bolts for fixing shafts and the like are provided on foundation concrete such as houses. As a jig for positioning the anchor bolt when placing the concrete foundation, for example, in Patent Document 1, as shown in FIGS. A jig 102 for positioning the anchor bolt 101 in a vertical direction at a predetermined position with respect to the mold 100 is disclosed. When positioning the anchor bolts 101 at the corners of the mold 100 using the jigs 102, the two jigs 102 are rotatably attached by the coupling bolts 103. The jigs 102 are aligned with the mold 100 by bringing the abutting portions 104 into contact with the inner edges of the mold 100, respectively. Then, the end of the bolt 106 that is screwed into the nut portion 105 fixed to the jig 102 is brought into contact with the outer wall of the mold 100, the coupling bolt 103 is fixed, and the jig 102 is fixed to the mold 100. Install to. Further, the collar portion of the hat-shaped holder 107 that is screwed with the anchor bolt 101 inserted through the insertion hole of the jig 102 is locked on the jig 102 to hold the anchor bolt 101 at a predetermined height. . Thereafter, concrete is placed on the mold 100 to form foundation concrete in which the anchor bolts 101 are embedded.

  On the other hand, in order to change the design or forget to install the anchor bolt, the anchor bolt may be buried in the post-construction for the foundation concrete. In such a case, a pilot hole is formed in the foundation concrete and the post-construction anchor is fixed to the foundation concrete. As a post-installed anchor, there is one called an adhesive anchor (resin anchor) because of its construction method. Adhesive anchors are embedded by placing a resin such as an epoxy resin in a prepared hole formed in a vertical direction in the foundation concrete, inserting anchor bolts, and curing until the resin is cured. When the resin is cured and adheres to the concrete and the anchor bolt, a desired pulling strength can be obtained.

When embedding anchor bolts in post-construction, the mold is often already removed, and a jig attached to the mold cannot be used. As a jig used in such a case, for example, in Patent Document 2, as shown in FIGS. 17A and 17B, anchor bolts 122 are horizontally arranged from the side wall surface 121 of the concrete structure 120. A jig 123 made of a transparent resin plate used for embedding is disclosed. A positioning line 125 that intersects at the center point of the anchor support hole 124 is displayed on the jig 123. The positioning line 125 aligns the anchor support hole 124 with the lower hole 126, thereby providing a concrete structure. The jig 123 is attached and fixed to the side wall surface 121 of the 120 using the stop hole 127. Then, the anchor bolt 122 is inserted and supported in the anchor support hole 124 of the jig 123 fixed to be fixed, and the protruding length of the anchor bolt 122 from the side wall surface 121 is adjusted. Thereafter, the resin 130 is filled from the injection nozzle 129 inserted into the lower hole 126 from the injection nozzle hole 128, and the inside of the lower hole 126 is filled with the resin 130 while the air in the lower hole 126 is exhausted from the vent hole 131. The resin 130 is cured until cured.
JP 2004-116150 A JP 2000-248750 A

  The anchor bolts embedded in the pilot holes formed in the vertical direction in the foundation concrete described above are fixed from the upper surface of the foundation concrete in the vertical direction in order to fix the shafts arranged by other anchor bolts already embedded. It is necessary to project at a predetermined height. However, the anchor bolt inserted into the pilot hole may be inclined before the resin is completely cured. In this case, the anchor bolt is not embedded vertically. Further, since the bottom surface of the lower hole is not necessarily horizontal, it is difficult to determine the protruding height of the anchor bolt by the depth of the lower hole. If the anchor bolt is inclined or the protrusion height is extremely different, there is a problem in that the anchor bolt cannot be fixed to the shaft assembly, and there is a possibility that the repair may occur.

  Further, in the jig 123 disclosed in Patent Document 2, since the anchor bolt 122 is supported on the lower surface of the inner wall of the anchor support hole 124, the anchor bolt 122 is embedded in the concrete structure 120 in the vertical direction. In this case, there is a problem that it cannot be held at a predetermined protruding height. In addition, since the jig 123 aligns the anchor support hole 124 with respect to the lower hole 126, the jig 123 is limited to a transparent member, and it is difficult to perform alignment. .

  The present invention has been made to solve such a problem. When anchor bolts are embedded in foundation concrete by post-construction, the positioning of the anchor bolts embedded in the pilot holes formed in the vertical direction in the foundation concrete is determined. An object of the present invention is to provide an anchor bolt positioning jig capable of holding the anchor bolt at a predetermined protruding height from the upper surface of the foundation concrete.

  In order to achieve the above object, the anchor bolt positioning jig according to claim 1 is placed on the upper surface along two orthogonal reference lines marked on the upper surface of the foundation concrete. An anchor bolt positioning jig for positioning an anchor bolt embedded in a lower hole formed in a vertical direction at a predetermined distance from each reference line, and a reference portion positioned on one reference line; At least a pair of legs each having an edge positioned on an auxiliary line parallel to the reference line separated from the other reference line by a predetermined distance; and the other reference line supported horizontally on the foundation concrete by the pair of legs. And a straight line connecting the reference portions and a straight line connecting the reference portions of the pair of legs as the two reference lines, respectively, from the two reference lines by a predetermined distance. In front of a remote location A support plate having an insertion hole through which the anchor bolt is inserted, and a latch that engages with the anchor bolt inserted through the insertion hole and is held by the support plate to hold the anchor bolt at a predetermined height. It is characterized by comprising a tool.

  The anchor bolt positioning jig according to claim 2 is the anchor bolt positioning jig according to claim 1, wherein the reference portion of the support plate is formed on a pair of legs positioned on the other reference line. It is characterized by.

  The anchor bolt positioning jig according to claim 3 is the anchor bolt positioning jig according to claim 1 or 2, wherein the two reference lines are written in a longitudinal direction and a width direction of the foundation concrete. The lower hole and the insertion hole are arranged in parallel along a reference line in the longitudinal direction.

The anchor bolt positioning jig according to claim 4 is placed on the upper surface along two orthogonal reference lines marked on the upper surface of the foundation concrete, and is spaced a predetermined distance from each of the two reference lines. An anchor bolt positioning jig for positioning an anchor bolt embedded in a lower hole formed in a vertical direction at a predetermined position, and an edge positioned on each of two reference lines in the vicinity of the intersection of the two reference lines The anchor bolts are horizontally supported on the foundation concrete by the legs, and the anchor bolts are positioned at predetermined distances from the two reference lines with the straight lines including the edges as the two reference lines. A support plate in which an insertion hole to be inserted is perforated, an anchor that engages with an anchor bolt inserted through the insertion hole, and is held by the support plate to hold the anchor bolt at a predetermined height; With It is characterized in that.

  An anchor bolt positioning jig according to a fifth aspect is the anchor bolt positioning jig according to the fourth aspect, wherein a pair of anchor bolt positioning jigs are provided at a predetermined distance from the insertion hole.

The anchor bolt positioning jig according to claim 6 is the anchor bolt positioning jig according to claim 4 or 5, wherein the two reference lines are one longitudinal direction at the corner of the foundation concrete , are those respectively marked in the other longitudinal direction orthogonal to the one of the longitudinal said that, the lower hole and the insertion hole are those which are respectively formed along each reference line of the respective longitudinal It is characterized by.

  The anchor bolt positioning jig according to claim 7 is the anchor bolt positioning jig according to any one of claims 1 to 6, wherein the insertion hole has a smaller diameter than the corresponding lower hole. It is said.

  According to the anchor bolt positioning jig according to claim 1, since the anchor bolt is held at a predetermined height, even if the bottom surface of the lower hole is not horizontal, the anchor bolt is protruded from the upper surface of the foundation concrete by a predetermined protrusion height. Can be held in. In addition, the reference portion of each pair of legs is positioned on one reference line, the reference portion of the support plate is aligned with the other reference line, and the anchor bolt positioning jig is mounted on the upper surface of the foundation concrete. Since the insertion hole is located at the same position as the lower hole, positioning of the insertion hole with respect to the lower hole of the insertion hole can be performed easily and accurately using two reference lines that do not disappear even after the formation of the lower hole. It can be carried out. The anchor bolt is inserted and held in the insertion hole positioned with respect to the lower hole, and the insertion hole is formed in the support plate supported by the pair of legs. Can be easily and reliably positioned within a predetermined allowable range. Thereby, since the anchor bolt and the shaft set embedded in the foundation concrete can be firmly fixed, it is possible to reduce repair. In addition, each pair of legs has a reference portion and an edge, and these are positioned on one reference line and an auxiliary line for alignment, so regardless of the width of the foundation concrete or the presence or absence of a formwork, etc. The anchor bolt can be positioned.

  According to the anchor bolt positioning jig described in claim 2, since the positioning can be performed by positioning the reference portion of the support plate on the other reference line, positioning of the anchor bolt is easier and more accurate. Can be done.

  According to the anchor bolt positioning jig according to claim 3, the anchor bolt can be easily positioned in correspondence with the anchor bolt mounting holes arranged side by side along the longitudinal direction of the base plate or the like mounted on the anchor bolt. It can be carried out.

  According to the anchor bolt positioning jig according to claim 4, since the anchor bolt is held at a predetermined height, even if the bottom surface of the lower hole is not horizontal, the anchor bolt has a predetermined protruding height from the upper surface of the foundation concrete. Can be held in. Also, by positioning the edges of the legs on the two reference lines and placing the anchor bolt positioning jig on the upper surface of the foundation concrete, the insertion hole is located at the same position as the lower hole. Positioning with respect to the pilot hole of the insertion hole can be easily and accurately performed using two reference lines that do not disappear even after the pilot hole is formed. The anchor bolt is inserted and held in the insertion hole positioned with respect to the lower hole, and the insertion hole is formed in the support plate supported by the pair of legs. Can be easily and reliably positioned within a predetermined allowable range. Thereby, since the anchor bolt and the shaft set embedded in the foundation concrete can be firmly fixed, it is possible to reduce repair. In addition, since the leg has a reference portion and these are positioned on the two reference lines for alignment, the anchor bolt can be positioned regardless of the width of the foundation concrete or the presence or absence of the formwork. it can.

  According to the anchor bolt positioning jig according to claim 5, each edge of each leg is positioned on two reference lines, thereby being formed at different predetermined positions with respect to the two reference lines. The anchor bolt can be positioned with respect to the pilot hole with one anchor bolt positioning jig.

  According to the anchor bolt positioning jig according to claim 6, the anchor bolt is positioned in correspondence with the anchor bolt mounting holes formed along the two longitudinal directions of the base plate or the like mounted on the anchor bolt. It can be done easily.

  According to the anchor bolt positioning jig according to claim 7, since the anchor bolt is inserted into the insertion hole having a smaller diameter than the lower hole, even if the anchor bolt is held inclined, the insertion hole The slope is regulated by Therefore, the positioning of the anchor bolt can be performed easily and reliably within a predetermined allowable range. Thereby, since the anchor bolt and the shaft set embedded in the foundation concrete can be firmly fixed, it is possible to reduce repair.

  An anchor bolt positioning jig according to a first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the anchor bolt positioning jig 1 is suitably used when the anchor bolt 3 is embedded in a straight portion of the foundation concrete 2. For example, a base plate (not shown) for fixing a shaft composed of columns and beams is attached to the anchor bolt 3 embedded in the foundation concrete 2, and a column is attached to the base plate in the longitudinal direction. Beams are respectively attached between adjacent base plates. On the upper surface 21 of the foundation concrete 2, two orthogonal reference lines X0 and Y0 that serve as a reference for the shaft group are marked by inking using ink thread or ink, etc. In the present embodiment, the longitudinal axis A reference line X0 in the direction and a reference line Y0 in the width direction are written and are orthogonal at the intersection point O.

  As shown in FIG. 2, a pair of prepared holes 22 are formed in the foundation concrete 2 in a vertical direction from the upper surface 21 at positions separated from the reference line X0 by a distance Ly and from the reference line Y0 by a distance Lx. These lower holes 22 correspond to the mounting holes of the base plate to the anchor bolts 3, and in accordance with the mounting holes provided so as to avoid interference with columns and beams attached to the base plate, a predetermined line from the reference line X0. Are formed side by side along the longitudinal direction at a distance Ly. The distances Lx and Ly are determined by the mounting position of the base plate with respect to the reference lines X0 and Y0, and are different standard values depending on the type of building and the house maker. For example, the distances Lx and Ly are both 30 mm. Further, the hole diameter and depth of the lower hole 22 are determined by the anchor bolt 3 to be embedded and the desired pulling-out resistance. For example, when the anchor bolt 3 has an outer diameter of 14 mm and a total length of 290 mm, the lower hole 22 has a hole diameter of 18 mm, depth. It is 250 mm or more.

  As shown in FIG. 1, the anchor bolt positioning jig 1 is placed on the upper surface 21 along the two reference lines X0 and Y0 marked on the upper surface 21 of the foundation concrete 2, and the anchor bolt 3 is positioned. It is made up of the jig body 10 and the locking tool 4. Hereinafter, when the jig body 10 is placed on the upper surface 21 of the foundation concrete 2, the longitudinal direction, the width direction, and the vertical direction of the foundation concrete 2 are respectively the X axis direction, the Y axis direction, and the Z axis direction of the jig body 10. And As shown in FIG. 3, the jig body 10 includes a pair of legs 11 and a support plate 13 having an insertion hole 12 through which the anchor bolt 3 is inserted, and the locking tool 4 is inserted into the insertion hole 12. It is carried on the support plate 13 by engaging with the anchor bolt 3 formed. The jig body 10 is formed by molding a rectangular metal plate piece having the same width with the X-axis direction as the longitudinal direction, and both end portions in the longitudinal direction are bent downward by the same dimension at a right angle. . The support plate 13 is supported horizontally by the pair of bent legs 11. In addition, the leg 11 and the support plate 13 may not be provided integrally, but the leg 11 and the support plate 13 may be provided separately and fixed by welding or the like.

  The lower surfaces 14 of the pair of legs 11 each have a rectangular shape in which the side 14a positioned in the negative Y-axis direction is one short side and the side 14b positioned outside the X-axis direction is one long side. The side 14a serves as a reference portion for positioning the jig body 10 on the reference line X0 on the upper surface 21 of the foundation concrete 2. In addition, this reference | standard part is not limited to the edge | side 14a, For example, the mark of linear etc. by the notch | incision formed by the lower surface 14, etching, etc. may be sufficient, and the jig | tool main body 10 is used for the basic concrete 2 Any material that can be visually confirmed to be positioned on the reference line X0 while being placed on the upper surface 21 may be used.

  In addition, the side 14b of the lower surface 14 serves as a reference edge for positioning the jig body 10 on the auxiliary line YA0 parallel to the reference line Y0 on the upper surface 21 of the foundation concrete 2. The edge is not limited to the side 14b, and may be, for example, a side located on the inner side in the X-axis direction of the lower surface 14, and the jig body 10 is placed on the upper surface 21 of the foundation concrete 2. In this state, it is only necessary to be able to be visually confirmed to be positioned on the auxiliary line YA0.

  The support plate 13 of the jig body 10 is horizontally supported by a pair of legs 11 at a predetermined distance from the upper surface 21 of the foundation concrete 2. As described above, the support plate 13 is a rectangular plate having a horizontal upper surface 16 with the X-axis direction as the longitudinal direction, and a pair of V-shapes in the center of both side surfaces so that the back ends thereof are opposed to each other. A notch 17 is formed, and the notch 17 serves as a reference portion for aligning the jig body 10 with respect to the reference line Y0. As shown in FIG. 4, the line Y1 connecting the back end of the notch 17 is orthogonal to the straight line X1 connecting the side 14a in the plan view, and the jig body 10 is placed on the upper surface 21 of the foundation concrete 2. At this time, the straight line Y1 is positioned on the reference line Y0 in plan view.

  More specifically, as shown in FIG. 1, when the jig body 10 is placed on the upper surface 21 of the foundation concrete 2, the support plate 13 is separated from the upper surface 21 of the foundation concrete 2 by a predetermined distance. The back end of the notch 17 cannot be accurately positioned on the reference line Y0. Accordingly, the auxiliary line YA0 for positioning the side 14b of the lower surface 14 of the leg 11 in contact with the upper surface 21 of the foundation concrete 2 is written on the upper surface 21 in parallel with the reference line Y0, and the side 14b is made to coincide with the auxiliary line YA0. Thus, the notch 17 is indirectly aligned with the reference line Y0. Since the side 14b and the outer surface 15 coincide in plan view, as shown in FIG. 7, the jig main body 10 is turned upside down and placed on the upper surface 21 of the foundation concrete 2, and cut on the reference line Y0. With the rear ends of 17 positioned, the auxiliary line YA0 can be marked on the upper surface 21 along the outer surface 15 as shown in FIG. As described above, the pair of cuts 17 in the support plate 13 serve as a reference portion that serves as a reference for alignment along the reference line Y0 of the jig body 10, and serves as a reference for describing the auxiliary line YA0. is there. Note that the reference portion of the support plate 13 is not limited to the pair of cuts 17, and for example, a linear mark or the like by etching or the like may be provided on the support plate 13. It suffices if it can be visually confirmed to be positioned on the reference line Y0 while being placed upside down on the upper surface 21 of the foundation concrete 2.

  As shown in FIG. 1, the support plate 13 has an insertion hole 12 through which the anchor bolt 3 is inserted. As shown in FIG. 4, the insertion hole 12 is formed at a position spaced apart from the straight line Y1 connecting the notches 17 and the straight line X1 connecting the sides 14a in plan view. In other words, the insertion hole 12 is formed in the support plate 13 so as to penetrate in the Z-axis direction with a position separated from the straight line X1 by the distance Ly and from the straight line Y1 by the distance Lx in the plan view. These distances Lx and Ly are equal to the distances Lx and Ly from the reference lines X0 and Y0 of the pilot hole 22 formed in the foundation concrete 2 described above. By forming the insertion hole 12 in this way, the jig body 10 was placed on the upper surface 21 by performing alignment along the two reference lines X0 and Y0 marked on the upper surface 21 of the foundation concrete 2. In this case, the insertion hole 12 can be aligned at the same position as the position where the lower hole 22 is formed in plan view.

  The anchor bolt 3 inserted into the insertion hole 12 and the lower hole 22 of the foundation concrete 2 is held in the vertical direction by positioning the lower part thereof by the lower hole 22 and the vicinity of the upper part thereof by the insertion hole 12. Therefore, the hole diameter of the insertion hole 12 needs to be larger than the outer diameter of the anchor bolt 3 inserted through the insertion hole 12 and desirably smaller than the hole diameter of the lower hole 22. The lower hole 22 is formed to have a hole diameter necessary for pouring the resin 5 (see FIG. 6C) into the lower hole 22, but the insertion hole 12 has no such restriction. It is possible to make the diameter smaller. For example, when the outer diameter of the anchor bottle 3 is 14 mm and the hole diameter of the lower hole 22 is 18 mm, the hole diameter of the insertion hole 12 is 16 mm. By the restriction by these insertion holes 12, the anchor bolt 3 can be easily and reliably positioned within a predetermined allowable range.

  The locking tool 4 engages with the anchor bolt 3 inserted through the insertion hole 12 of the jig body 10 and is supported by the support plate 13 to hold the anchor bolt 3 at a predetermined height. As shown, a substantially U-shaped opening 42 is formed in the horizontal plate-like portion 41. The locking tool 4 is made of a metal plate having a thickness less than the screw pitch of the anchor bolt 3 and has an opening 42 formed so that the width is narrowed from the opening width W1 on the opening side to the width W2 on the back. The opening width W1 is wider than the male screw outer diameter of the anchor bolt 3, and the width W2 is narrower than the male screw valley diameter of the anchor bolt 3. By forming such an opening 42, the opening 42 is inserted between the threads of the anchor bolt 3 from the direction perpendicular to the axis of the anchor bolt 3 to form the plate-like portion 41 around the opening 42. It is possible to engage with the anchor bolt 3 by hooking the threaded portion of the anchor bolt 3 on the upper surface of the anchor bolt 3. In addition, the locking device 4 includes a handle portion 43 that is uniformly inclined upward at a gentle angle on the side opposite to the side where the opening 42 is formed in order to facilitate gripping. The locking device 4 is not limited to the form shown in FIG. 5, and may be, for example, a nut or a clamp, and may be engaged with the anchor bolt 3 and carried on the support plate 13. That's fine.

  The height Lz (see FIG. 3) from the lower surface 14 of the leg 11 to the upper surface 16 of the support plate 13 is determined by the protruding height H (see FIG. 9B) of the anchor bolt 3 from the upper surface 21 of the foundation concrete 2. For example, when the protrusion height H is 40 to 50 mm, the height Lz is set to 30 mm. In this way, the anchor 4 that engages the anchor bolt 3 is carried on the upper surface 16 of the support plate 13, so that the anchor bolt 3 is floated and held from the bottom surface of the lower hole 22. The anchor bolt 3 can be held at a predetermined protruding height H from the upper surface 21 of the foundation concrete 2 even if the bottom surface is not horizontal as long as the depth is equal to or greater than the predetermined depth.

  Hereinafter, using the anchor bolt positioning jig 1 configured as described above, the process of embedding the anchor bolt 3 in the post-construction on the upper surface 21 of the straight portion of the existing foundation concrete 2 will be described based on the drawings. To do.

  First, in the first step, as shown in FIG. 2, a survey is performed with reference to two orthogonal reference lines X0 and Y0 written on the upper surface 21 of the existing foundation concrete 2, and a distance Lx, The drilling positions of the pilot holes 22 arranged along the longitudinal direction at a distance Ly from the reference line Y0 are marked. As shown in FIG. 6 (a), a lower hole 22 is formed in this marked drilling position by drilling vertically downward from the upper surface 21 of the basic concrete 2 using a drilling tool such as a concrete drill or a core punching tool. The inside of the prepared lower hole 22 is cleaned to remove foreign matters such as chips.

  Next, in the second step, as shown in FIG. 7, the jig body 10 is turned upside down, and the back ends of the pair of cuts 17 of the support plate 13 are positioned on the longitudinal reference axis Y0, respectively. The jig body 10 is placed on the upper surface 21 of the foundation concrete 2. Then, while maintaining this state, as shown in FIG. 6 (b), the two auxiliary lines YA0 (on the upper surface 21 of the foundation concrete 2 along the outer surface 15 of the leg 11 are used using the ink brush 6 or the like. (See FIG. 1). Thus, since the jig body 10 has the pair of cuts 17 positioned on the width direction reference axis Y0 and the flush outer surface 15, the distance from the straight line Y1 to the side 14b is separated from the reference line Y0. The auxiliary line YA0 parallel to the reference line Y0 can be accurately and easily written on the upper surface 21. Moreover, since the reference line Y0 remains even after the step of forming the prepared hole 22, it is possible to ensure the line that is the object of alignment. The auxiliary line YA0 may be marked after the third step described below.

  Next, in the third step, as shown in FIG. 6C, the resin 5 such as epoxy resin is poured into the prepared hole 22 formed in the first step, and the anchor bolt 3 is inserted into the prepared hole 22. To do.

  Next, in the fourth step, as shown in FIG. 8 and FIG. 9A, in the state where the anchor bolts 3 are respectively inserted through the insertion holes 12 of the jig body 10, the side 14a is set on the reference line X0. The sides 14b are positioned on the two auxiliary lines YA0, and the jig body 10 is placed on the upper surface 21 of the foundation concrete 2. Thereby, the lower hole 22 and the insertion hole 12 corresponding to these are located in the same position in planar view, respectively. Thus, since the alignment is performed with respect to the reference line X0 and the auxiliary line YA0 written on the upper surface 21, the jig body 10 can be placed accurately and easily along the reference line X0 and the reference line Y0. it can. In addition, the black line indicating the drilling position of the lower hole 22 may disappear in the process of forming the lower hole 22, but the reference line X0 remains and the auxiliary line YA0 is written after the lower hole 22 is formed. It is possible to secure a line to be aligned.

  Then, whether the horizontal upper surface 16 of the support plate 13 of the jig body 10 placed on the upper surface 21 is horizontal with respect to the ground surface (not shown) is determined using the level device (not shown) in the X-axis direction and Measure in the Y-axis direction. This is because the upper surface 21 of the foundation concrete 2 is not necessarily horizontal with respect to the ground surface, and other anchor bolts already embedded are positioned in the vertical direction with respect to the ground surface. By placing a spacer (not shown) between the lower surface 14 of the jig body 10 and the upper surface 21 of the foundation concrete 2, the horizontal upper surface 16 of the support plate 13 is made horizontal with respect to the ground surface.

  Next, in the fifth step, as shown in FIG. 1 and FIG. 9B, the anchor bolt 3 is engaged so that the anchor bolt 3 is held at a predetermined protruding height H from the upper surface 21 of the foundation concrete 2. The combined locking tool 4 is carried on the support plate 13 and the anchor bolt 3 is held on the jig body 10. Specifically, while holding the anchor bolt 3 with one hand so that the anchor bolt 3 has a predetermined projecting height H from the upper surface 21 of the foundation concrete 2, the locking tool 4 holding the handle portion 43 with the other hand is attached to the jig body. Then, the anchor bolt 3 is moved to an appropriate position so as to slide along the upper surface 16 of the anchor 10. The locking member 4 is carried on the upper surface 16 of the support plate 13 at the appropriate position. Thereby, since the anchor bolt 3 inserted through the insertion hole 12 located at the same position as the lower hole 22 in the plan view is held, the positioning of the anchor bolt 3 can be performed accurately and reliably. Further, by visually observing whether the anchor bolt 3 held by the jig body 10 is parallel to the leg 11, it may be confirmed that the anchor bolt 3 is embedded vertically. Further, it may be confirmed that the anchor bolt 3 is embedded in a predetermined position by visually observing whether the anchor bolt 3 is located at the center of the insertion hole 12 of the jig body 10 from an obliquely upward direction.

  Finally, in the sixth step, the resin 5 is completely cured by curing while maintaining the state in the fifth step. Then, as shown in FIG.9 (c), the latching tool 4 and the jig | tool main body 10 are removed, and an embedding process is complete | finished. The anchor bolt 3 that has been positioned in the fifth step is held at a predetermined embedding position of the foundation concrete 2 because the anchor bolt 3 is prevented from being inclined during curing.

  In this way, by inserting the jig body 10 with respect to the two reference lines X0 and Y0 marked on the upper surface 21 of the foundation concrete 2, the insertion hole 12 is formed at the same position as the lower hole 22 in a plan view. Since the anchor bolt 3 positioned and inserted through the insertion hole 12 is held at a predetermined protruding height H, the anchor bolt 3 can be positioned accurately and reliably. It is possible to reduce the repair that occurs without being fixed to the shaft assembly.

  Further, since the anchor bolt 3 is positioned by positioning the jig body 10 with respect to the upper surface 21 of the foundation concrete 2, the anchor bolt positioning jig 1 can be mounted regardless of the width of the foundation concrete 2 or the like. It can be used and is highly versatile. Moreover, even when the formwork used when the foundation concrete 2 is provided is left as it is, the anchor bolt 3 is compared with a conventional jig that requires installation work such as bolt fixing to the formwork. Can be easily positioned. In addition, the anchor bolt 3 can be positioned with high accuracy because the mold is not distorted as compared with a conventional jig that performs alignment by abutting against the mold. .

  In addition, as a modification of the anchor bolt positioning according to the first embodiment of the present invention, for example, instead of a pair of cuts 17, as shown in FIG. May be provided on the reference line Y0. The notches 17 ′ are provided on the lower surfaces of the pair of legs 11 ′, respectively, so that the notches 17 ′ are positioned on the reference line Y 0 when the jig body 10 ′ is placed on the upper surface 21 of the foundation concrete 2. It has become a reference part. In addition, this reference | standard part is not limited to notch | incision 17 ', For example, the linear mark by the etching etc. which were formed along the side of the lower surface of leg 11' may be sufficient, and jig body 10 What is necessary is that it can be visually positioned to be positioned on the reference line Y0 in a state where 'is placed on the upper surface 21 of the foundation concrete 2. By providing this reference portion, the jig body 10 ′ can be positioned on the reference line Y 0 without writing the auxiliary line YA 0 on the upper surface 21.

  Hereinafter, an anchor bolt positioning jig according to a second embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 11, the anchor bolt positioning jig 7 is suitably used when the anchor bolt 3 is embedded in a corner portion of the foundation concrete 8. For example, a base plate (not shown) is attached to the anchor bolt 3 embedded in the foundation concrete 8 so as to fix a shaft set made up of columns, beams, and the like. A beam is attached to each of the base plates. On the upper surface 81 of the foundation concrete 8, two orthogonal reference lines X0 and Y0 that serve as a reference for the shaft group are marked in black. In the present embodiment, one reference line X0 in the longitudinal direction and the other And a reference line Y0 in the longitudinal direction of FIG.

  In the foundation concrete 8, two pilot holes (not shown) are formed in the vertical direction from the upper surface 81 at positions separated from the two reference lines X0 and Y0 by distances La and Lb, respectively. These pilot holes correspond to the mounting holes of the base plate to the anchor bolts 3, and two reference lines X0 are aligned with the mounting holes provided to avoid interference with columns and beams attached to the base plate. , Y0 and spaced apart from each other by distances La and Lb along the reference lines X0 and Y0. These distances La and Lb are determined by the mounting position of the base plate with respect to the reference lines X0 and Y0, and are different standard values depending on the type of building and the house maker. For example, the distance between the adjacent reference lines X0 and Y0 and the pilot holes The distances La are each 30 mm, and the distances Lb between the reference lines X0 and Y0 that are the ends in the longitudinal direction and the pilot holes are 90 mm. The hole diameter and depth of the prepared hole are the same as those in the first embodiment.

  The anchor bolt positioning jig 7 is placed on the upper surface 81 along the two reference lines X0 and Y0 marked on the upper surface 81 of the foundation concrete 8, and positions the anchor bolt 3. The tool main body 70 and the locking tool 4 are included. Hereinafter, when the jig body 70 is placed on the upper surface 81 of the foundation concrete 8, one longitudinal direction, the other longitudinal direction, and the vertical direction of the foundation concrete 2 are respectively the X axis direction and the Y axis direction of the jig body 70. And the Z-axis direction. As shown in FIGS. 12 and 13, the jig main body 70 includes a pair of legs 71 and 72 and a support plate 74 having an insertion hole 73 through which the anchor bolt 3 is inserted. It is engaged with the anchor bolt 3 inserted through the insertion hole 73 and is carried on the support plate 74. A pair of legs 71 and 72 horizontally support a support plate 74 made of a wide, substantially L-shaped metal plate piece, and each leg 71 and 72 is a rectangular metal plate of the same width bent at a right angle. It consists of pieces. One leg 71 supports the lower surface of the substantially L-shaped outer corner of the support plate 74, and the leg 71 and the support plate 74 are welded or bonded so that the upper surface of the leg 71 and the lower surface of the support plate 74 are in contact with each other. And so on. The other leg 72 supports the lower surface of the substantially L-shaped inner corner of the support plate 74, and the leg 72 and the support plate 74 are welded so that the upper surface of the leg 72 and the lower surface of the support plate 74 are in contact with each other. It is fixed by adhesion or the like.

  One leg 71 of the jig body 70 is directed upward in the Z-axis direction from a substantially L-shaped lower surface 75 having a side 75a positioned in the negative Y-axis direction and a side 75b positioned in the negative X-axis direction. It is formed to extend. The side 75a serves as a reference edge for positioning the jig body 70 on the reference line X0 on the upper surface 81 of the foundation concrete 8. Further, the side 75b serves as a reference edge for positioning the jig body 70 on the reference line Y0 on the upper surface 81 of the foundation concrete 8. These edges are not limited to the sides 75a and 75b, and are positioned on the reference lines X0 and Y0 with the jig body 70 placed on the upper surface 81 of the foundation concrete 8. Can be confirmed by visual inspection. Further, these edges may be positioned on the two reference lines X0 and Y0 including the intersection point O. For example, in the X-axis negative direction or the Y-axis negative direction of the lower surface 75 of the leg 71, The located side may be a side including the intersection point P2. The other leg 72 extends upward in a Z-axis direction from a substantially L-shaped lower surface 76 having sides 76a positioned in the Y-axis positive direction and sides 76b positioned in the X-axis positive direction as outer sides. Is formed.

  As shown in FIG. 11, the support plate 74 has two insertion holes 73 through which the anchor bolts 3 are inserted. As shown in FIG. 14, these insertion holes 73 are formed with the straight lines X <b> 2 and L <b> 2 at a predetermined distance La and Lb from the straight line X <b> 2 including the side 75 a and the straight line Y <b> 2 including the side 75 b, respectively, in plan view. The support plate 74 is drilled in the Z-axis direction along Y2. These predetermined distances La and Lb are equal to the predetermined distances La and Lb from the reference lines X0 and Y0 of the prepared holes formed in the foundation concrete 8 described above. By forming the insertion hole 73 in this way, the jig body 70 was placed on the upper surface 81 by performing alignment along the two reference lines X0 and Y0 marked on the upper surface 81 of the foundation concrete 8. At this time, the insertion hole 73 can be aligned at the same position in plan view as the position where the lower hole is formed.

  The anchor bolt 3 inserted into the insertion hole 73 and the lower hole of the foundation concrete 8 is held in the vertical direction by positioning the lower part thereof by the lower hole and the vicinity of the upper part by the insertion hole. Therefore, similarly to the first embodiment, the hole diameter of the insertion holes 73 needs to be larger than the outer diameter of the anchor bolt 3 inserted through these insertion holes 73, and It is desirable that the diameter is smaller than the hole diameter. By the restriction by these insertion holes 12, the anchor bolt 3 can be easily and reliably positioned within a predetermined allowable range.

  The support plate 74 includes an upper surface 77 on which the locking tool 4 (see FIG. 5) that locks the anchor bolt 3 that is inserted through the insertion hole 73 can be supported, and the upper surface 77 of the support plate 74 from the lower surface 75 of the leg 71. The height up to is determined by the protruding height of the anchor bolt 3 from the upper surface 81 of the foundation concrete 8 as in the first embodiment. In this way, the anchor 4 that engages the anchor bolt 3 is supported on the upper surface 77 of the support plate 74, so that the anchor bolt 3 is held in a state of floating from the bottom surface of the lower hole. The anchor bolt 3 can be held at a predetermined protruding height from the upper surface 81 of the foundation concrete 8 even if the bottom surface is not horizontal as long as the depth is equal to or greater than the predetermined depth.

  Hereinafter, the process of embedding the anchor bolt 3 in the post-construction with respect to the upper surface 81 at the corner of the existing foundation concrete 8 using the anchor bolt positioning jig 7 configured as described above, based on the drawings. explain.

  First, in the first step, although not shown, surveying is performed with reference to two orthogonal reference lines X0 and Y0 written on the upper surface 81 of the existing foundation concrete 8, and from the two reference lines X0 and Y0, respectively. The drilling position of the pilot hole separated by a predetermined distance La, Lb is marked. Then, a pilot hole (not shown) is formed vertically downward from the upper surface 81 of the foundation concrete 8 at this drilling position. Next, as in the third step described above in the first embodiment, a resin 5 such as an epoxy resin is poured into the lower hole, and the anchor bolt 3 is inserted into the lower hole. In the step of burying the anchor bolt 3 using the anchor bolt positioning jig 7, there is no step corresponding to the second step described above in the first embodiment.

  Next, in the fourth step, with the anchor bolts 3 inserted through the insertion holes 73 of the jig body 70, the side 75a is positioned on the reference line X0 and the side 75b is positioned on the reference line Y0, respectively. The tool body 70 is placed on the upper surface 81 of the foundation concrete 8. As a result, the lower hole and the corresponding insertion hole 73 are located at the same position in plan view. In this way, since the sides 75a and 75b of the leg 71 are positioned on the two reference lines X0 and Y0 marked on the upper surface 81, the jig body 70 can be accurately moved along the two reference lines X0 and Y0. And it can mount easily. In addition, the black line indicating the drilling position of the pilot hole may disappear in the process of forming the pilot hole. However, since the two reference lines X0 and Y0 remain, a line to be reliably positioned is secured. be able to. Further, whether the horizontal upper surface 77 of the support plate 74 is horizontal with respect to the ground surface (not shown) is measured in the X-axis direction and the Y-axis direction using a level device (not shown). By placing a spacer (not shown) between the lower surfaces of the legs 71, 72 of the jig main body 70 and the upper surface 81 of the foundation concrete 8, the horizontal upper surface 77 of the support plate 74 becomes horizontal with respect to the ground surface. Like that.

  Next, as in the fifth step described above in the first embodiment, as shown in FIG. 11, the anchor bolt 3 is held at a predetermined protruding height from the upper surface 81 of the foundation concrete 8. The locking tool 4 engaged with the anchor bolt 3 is carried on the support plate 74, and the anchor bolt 3 is held on the jig body 70. Thereby, since the anchor bolt 3 inserted through the insertion hole 73 located at the same position as the lower hole in a plan view is held, the positioning of the anchor bolt 3 can be performed accurately and reliably. Further, by visually observing whether the anchor bolt 3 held by the jig body 70 is parallel to the leg 71, it may be confirmed that the anchor bolt 3 is embedded in the vertical direction. Further, it may be confirmed that the anchor bolt 3 is embedded at a predetermined position by visually observing whether the anchor bolt 3 is located at the center of the insertion hole 73 of the jig body 70 from an obliquely upward direction.

  Finally, in the sixth step, the resin 5 is completely cured by curing while maintaining the state in the fifth step. Thereafter, the locking tool 4 and the jig body 70 are removed, and the embedding process is completed. The anchor bolt 3 that has been positioned in the fifth step is held while being tilted while being cured, and is embedded at a predetermined embedding position of the foundation concrete 8.

  In this way, by positioning the jig body 70 with respect to the two reference lines X0 and Y0 marked on the upper surface 81 of the foundation concrete 8, the insertion hole 73 is positioned at the same position as the lower hole in plan view. Since the anchor bolts 3 inserted through the insertion holes 73 are held at a predetermined protruding height, the anchor bolts 3 can be positioned accurately and reliably. Repairs that cannot be fixed with the set can be reduced.

  Further, since the anchor bolt 3 can be positioned by aligning the jig body 70 with the upper surface 81 of the foundation concrete 8, the anchor bolt positioning can be performed regardless of the width of the foundation concrete 8 or the like. The jig 7 can be used and is highly versatile. Further, even when the formwork used when the foundation concrete 8 is provided is left as it is, the anchor bolt 3 is compared with a conventional jig that requires installation work such as bolt fixing to the formwork. Can be easily positioned. In addition, the anchor bolt 3 can be positioned with high accuracy because the mold is not distorted as compared with a conventional jig that performs alignment by abutting against the mold. .

  In the process described above, as shown in FIG. 15A, the two sides 75a and 75b of the lower surface 75 of the leg 71 of the jig body 70 are positioned on the two reference lines X0 and Y0, respectively. At least, the case where the jig main body 70 is placed on the upper surface 81 of the foundation concrete 8 and the anchor bolt 3 is positioned at the corner is described. However, as shown in FIG. 15B, the two sides 76a and 76b of the lower surface 76 of the leg 72 of the jig body 70 are positioned on the two reference lines X0 and Y0, respectively, and the jig body 70 is moved. It may be placed on the upper surface 81 of the foundation concrete 8 and the anchor bolt 3 may be positioned at the protruding corner. However, in this case, it is necessary to form the insertion hole 73 around a position separated by a predetermined distance, for example, 30 mm, from the side including the sides 76a and 76b of the leg 72 in plan view.

  In the anchor bolt positioning jigs 1 and 7 shown in the embodiment of the present invention, the anchor bolt positioning jigs 1 and 7 are unique with respect to the two reference lines X0 and Y0 marked on the upper surfaces 21 and 81 of the foundation concrete 2 and 8. However, the present invention is not limited to this. For example, a reference portion for forming a cut or the like at the lower end of the outer side surface 15 of the jig body 10 and positioning it on the reference line X0 may be provided. Further, insertion holes may be added to the support plates 13 and 74 of the jig main bodies 70 and 80. As a result, even if the position where the anchor bolt 3 is embedded with respect to the two reference lines X0 and Y0 differs depending on the type of building, the housing manufacturer, etc., the anchor bolt 3 is positioned using one jig body. be able to.

It is a perspective view showing the state where anchor bolt 3 was held in the 5th process using anchor bolt positioning jig 1 concerning a 1st embodiment of the present invention. It is a perspective view which shows the foundation concrete 2 in which the lower hole 22 was formed. 2 is a perspective view of a jig body 10. FIG. 3 is a plan view of the jig body 10. FIG. It is a perspective view of the locking tool. It is sectional drawing of the process of embedding the anchor bolt 3, (a) shows a 1st process, (b) shows a 2nd process, (c) shows a 3rd process, respectively. It is a perspective view which shows the state which mounted the jig main body 10 turned upside down on the upper surface 21 of the foundation concrete 2 in a 1st process. In a 4th process, it is a perspective view which shows the state which mounted the jig main body 10 in the upper surface 21 of the foundation concrete 2. FIG. It is sectional drawing of the process of embedding the anchor bolt 3, (a) shows a 4th process, (b) shows a 5th process, (c) shows a 6th process, respectively. It is a perspective view of jig | tool main body 10 'which concerns on the deformation | transformation of the 1st Embodiment of this invention. It is a perspective view which shows the state which hold | maintained the anchor bolt 3 in the 5th process using the anchor bolt positioning jig | tool 7 which concerns on the 2nd Embodiment of this invention. 3 is an upper perspective view of a jig body 70. FIG. 4 is a lower perspective view of the jig body 70. FIG. 3 is a plan view of a jig body 70. FIG. It is a top view explaining aligning of the jig body 70 with respect to the corner of the foundation concrete 8, (a) is aligned at the exit corner, and (b) is aligned at the entrance corner. Show the case. It is a figure explaining the state which installs the anchor bolt 101 with respect to the formwork 100 using the conventional jig | tool 102, (a) is a top view, (b) is a side view. (A) is sectional drawing which shows the state which embedded the anchor bolt 102 using the conventional jig | tool 123, (b) is a perspective view of the jig | tool 123. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 7 Anchor bolt positioning jig | tool 2, 8 Foundation concrete 3 Anchor bolt 4 Locking tool 5 Resin 10, 10 ', 70 Jig body 11, 11', 71, 72 Leg 12, 73 Insertion hole 13, 74 Support Side of plate 14a (reference part)
14b side (edge)
16, 77 Upper surface 17, 17 'cut (reference part)
21, 81 Upper surface 22 Pilot hole 75a, 75b Side (edge)
X0, Y0 Reference line YA0 Auxiliary line

Claims (7)

It is mounted on the upper surface along two orthogonal reference lines marked on the upper surface of the foundation concrete, and is embedded in a pilot hole formed in a vertical direction at a predetermined distance from each of the two reference lines. An anchor bolt positioning jig for positioning an anchor bolt,
At least a pair of legs each having a reference portion positioned on one reference line and an edge portion positioned on an auxiliary line parallel to the reference line spaced a predetermined distance from the other reference line;
A pair of legs supported horizontally on the foundation concrete by the pair of legs and having a reference portion for alignment with the other reference line; a straight line connecting the reference portions; and a straight line connecting the reference portions of the pair of legs; A support plate having insertion holes through which the anchor bolts are inserted at positions separated from the two reference lines by a predetermined distance, respectively,
An anchor bolt that engages with an anchor bolt inserted through the insertion hole and is held by the support plate and holds the anchor bolt at a predetermined height. Positioning jig.   The anchor bolt positioning jig according to claim 1, wherein the reference portion of the support plate is formed on a pair of legs positioned on the other reference line.   The two reference lines are written in the longitudinal direction and the width direction of the foundation concrete, and the prepared hole and the insertion hole are arranged in parallel along the reference line in the longitudinal direction. The anchor bolt positioning jig according to claim 1 or 2. It is mounted on the upper surface along two orthogonal reference lines marked on the upper surface of the foundation concrete, and is embedded in a pilot hole formed in a vertical direction at a predetermined distance from each of the two reference lines. An anchor bolt positioning jig for positioning an anchor bolt,
A leg having an edge positioned on each of the two reference lines in the vicinity of the intersection of the two reference lines;
An insertion hole that is horizontally supported on the foundation concrete by the legs and through which the anchor bolt is inserted at a predetermined distance from the two reference lines with the straight line including the edge as the two reference lines. A support plate, and
An anchor bolt that engages with an anchor bolt inserted through the insertion hole and is held by the support plate and holds the anchor bolt at a predetermined height. Positioning jig.   The anchor bolt positioning jig according to claim 4, wherein a pair of the legs are provided so as to be a predetermined distance from the insertion hole. The two reference lines are respectively written in one longitudinal direction at the corner of the foundation concrete and the other longitudinal direction perpendicular to the one longitudinal direction, and the prepared hole and the insertion hole are anchor bolt positioning jig according to claim 4 or 5, characterized in that along each reference line in the longitudinal direction of the respective those which are respectively formed.   The anchor bolt positioning jig according to any one of claims 1 to 6, wherein the insertion hole has a smaller diameter than the corresponding lower hole.

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