JPH0533488A - Method for fixing concrete buried object to formwork and concrete buried object - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the pulling bolt insertion hole provided in the formwork and the screw hole of the concrete buried object for screwing the drawing bolt are misaligned, the formwork hole should be large. (EN) Provided is a method of fixing a concrete buried object, which can be easily adjusted in position without making a plurality or plural pieces, and can concretely fix a concrete buried object such as a box to a formwork with a pulling bolt. [Constitution] The box 1 which is a concrete buried object is temporarily fixed inside the form 80, and the box 1 is displaced.
No. 0 screwing hole 30 and the through hole 81 formed in the mold 80, the position adjusting tool 70 is inserted from the outside of the mold 80 into the through hole 81 and is locked by the locking portion 40. And the screw hole 30 are aligned so that the pulling bolt is inserted from the outside of the frame 80 into the through hole 81 and screwed into the screw hole 30, and the box 10 is attached to the frame 80. Fix it tightly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing a concrete buried object to a formwork in which a concrete buried object such as a box is buried in a concrete wall etc. And related to concrete buried objects.

[0002]

2. Description of the Related Art Conventionally, a method for fixing a concrete buried object such as a box to a form has been performed by the following procedure. First, as shown in FIG. 13, the installation tool 105 is attached to the bottom wall 104 of the box 102, and the installation tool 1 is installed.
The erection rod 106 of 05 is erected and fixed to the reinforcing bar 107 arranged vertically and horizontally. Next, the mold 100 is formed. Then, a hole 101 through which the pulling bolt 108 is inserted is provided from the outside of the mold 100. Next, as shown in FIG. 14, the drawing bolts 108 are inserted into the holes 101 provided in the mold 100, and the drawing bolts 108 are inserted into the screw holes 103 of the drawing bolts 108 provided in the bottom wall 104 of the box 102. The box 102 was brought into close contact with the inside of the mold 100 by screwing the tip of the above and tightening it with the nut 109 from the outside of the mold 100, and concrete was poured and buried.

[0003]

However, in the conventional method as described above, the through hole 101 is formed in the mold 100.
When setting up the box 102
Since a hole is drilled at a position corresponding to the screwing hole 103 of the pulling bolt 108 provided in the box, the through hole 101 provided in the mold 100 and the screwing hole 103 of the box 102 must be exactly aligned. In some cases, as shown in FIG. 15, the pulling bolt 108 must be inserted obliquely.

In such a case, the through hole 101 of the mold 100
And the positional deviation from the screw hole 103 of the box 102 is large,
When the tip of the draw bolt 108 cannot be screwed into the screw hole 103, the through hole 10 of the mold 100 is used.
1 was made larger or the through hole 101 was additionally provided, but since the mold 100 is reused, the through hole 101
It is not desirable to increase the number of holes or to provide a plurality of through holes 101, and repairing such as filling holes later is required for reuse, which is a difficult task.

In addition, recently, in order to surely prevent concrete from entering the box in a box to which the box cover having a coating allowance or the like is attached, the tip of the pulling bolt is screwed to the box cover. A screw hole may be provided in some cases (Japanese Patent Laid-Open No. 64-39209).
Issue). In such a case, since there is no distance between the screw hole and the mold, the pulling bolt is inserted into the through hole and screwed into the screw hole of the box cover which is misaligned with respect to the through hole of the mold. It is difficult to screw it into the hole.

The present invention has been made in view of the above circumstances, and the through hole provided in the mold and the screw hole of the concrete buried object for screwing the pulling bolt are misaligned. Also, it is possible to easily adjust the position of the formwork without making the holes in the formwork large or multiple, and concrete fixtures such as boxes can be easily fixed to the formwork with pulling bolts. The present invention intends to provide a fixing method and a concrete buried object.

[0007]

As a means for solving the above-mentioned problems, the invention according to claim 1 is a "screw hole for screwing a pulling bolt and a locking portion for locking a position adjusting tool". Temporarily fix the concrete buried object with and inside the formwork,
The position adjusting tool is inserted from the outside of the mold into the through hole formed in the mold and locked in the locking part, and the position is adjusted so that the through hole and the screw hole correspond, and then the pulling is performed. The method of fixing concrete embedding to a formwork, characterized in that the bolt is inserted from the outside of the formwork into the through hole and screwed into the screw hole to closely fix the concrete embedding to the formwork ”. I am trying.

As a means for solving the above-mentioned problems, the invention according to claim 2 is a "screw to which a drawing bolt inserted from the outside of the mold into a through hole formed in the mold is screwed. A concrete embedded object having an attachment hole, which is attracted by an attracting bolt and fixed in close contact with the inner surface of the mold, and which is temporarily fixed to the formwork. And a through hole, the concrete buried article is characterized in that a locking portion for locking the position adjusting tool inserted from the outside of the mold is provided so as to face the inner surface of the mold so as to adjust the position.
Is the gist.

[0009]

In the fixing method according to claim 1, this will be described based on the embodiment shown in the drawing. First, as shown in FIG. 1, in a state where the box 10 which is a concrete buried object is temporarily fixed. The form 80 is brought into contact. Form 80 for temporary fixing
However, the means may be the erection tool 50 as shown in FIG. 1 or the reinforcing bar 60 as shown in FIG.

Then, as shown in FIGS. 2 and 3, a through hole 81 is formed in the frame 80, the position adjusting tool 70 is inserted through the through hole 81, and the tip of the position adjusting tool 70 is fixed to the locking portion 40. The holes 81 provided in the form 80 and the screw holes 30 into which the tips of the pulling bolts 90 are screwed are adjusted in position so that the holes 81 and 30 correspond to each other. Align them so that they are in a straight line.

When the locking portion 40 is provided on the box cover 20 as shown in FIGS. 1, 6 and 7, it is shown in FIGS.
The lock plate 13 may be provided on the closing plate 13 that closes the opening 11 of the box 10 as shown in FIG. 10, or may be provided on the bottom wall 12 of the box 10 as shown in FIGS. The position adjustment can be easily performed by inserting the position adjusting tool 70 from the outside of the mold 80 by the part 40.

Thereafter, as shown in FIG. 4, the pulling bolt 90 is inserted from the outside of the mold 80 into the through hole 81 and the screwing hole 30.
The box 10 is fixed in close contact with the mold 80 by screwing the nut 10 and the nut 91. Then, as shown in FIG. 5, concrete is poured and buried.

By the fixing method as described above, the position can be easily adjusted without increasing the size of the through hole of the form or making it into a plurality by the displacement of the position, and the concrete embedding is pulled into the form with the pulling bolt. Can be fixed closely.

Further, in the concrete buried object according to the second aspect, for example, as shown in FIG. 1, it is temporarily fixed to the reinforcing bar 60 or the like. Then, in the temporarily fixed state, the position adjusting tool 70 is inserted into the locking portion 40 from the outside of the form 80 and locked, whereby the position of the screw hole 30 for screwing the pulling bolt 90 is adjusted. Is able to.

Some of such concrete buried objects are provided with the locking portion 40 on the box cover 20 (for example, FIGS. 1, 6 and 7), and in this case, the opening 11 of the box 10 is provided. The box cover 20 is integrally assembled with the box 10 by screwing or the like, and the position adjusting tool 70 is locked to the locking portion 40 of the box cover 20 to move the box cover 20.
Also move at the same time. In addition, there is one in which the locking portion 40 is provided on the closing plate 13 that closes the opening 11 of the box 10 (for example, FIGS. 8 and 9), and in this case, the mounting plate 52 fixes the bottom wall of the box 10. Combined installation tool 5
0 is integrally attached to the box 10, and the closing plate 1
The box 10 is moved together with the bottom wall 12 by locking the position adjusting tool 70 to the locking portion 40 provided on the box 3. In addition, the locking portion 40 is the bottom wall 12 of the box 10.
Those provided on the inner surface (for example, FIGS. 10 and 11)
In this case, the position adjusting tool 70 is locked to the locking portion 40 to move the box 10 directly.

[0016]

EXAMPLES Next, concrete examples of concrete embeddings according to the present invention will be described.

1, 6 and 7 are sectional views showing the box cover 20 which is a concrete buried object in which the locking portion 40 is provided on the box cover 20. In the embodiment shown in FIGS. 1 and 6, as the locking portion 40, a recess is formed by recessing the center of the box cover 20, and the driver which is the position adjusting tool 70 is formed on the inner peripheral surface 41 of this recess. The tip of the can be locked. The recess may be formed in one step as shown in FIG. 1 or may be formed in two steps as shown in FIG.
If there are two stages, more positions are locked by the position adjusting tool 70, and the position adjusting tool 70 is inserted in the through hole 81 provided in the mold 80.
When the is inserted, the inserted portion can be locked to the locking portion 40 according to the degree of displacement, which is convenient.
In the center of the recess, a nut 31 that becomes the screw hole 30 of the pulling bolt 90 is embedded. The screw hole 30 is the nut 3
Besides 1, the female screw may be directly formed on the box cover 20. In the embodiment shown in FIG. 7, a nut 31 to be the screw hole 30 is embedded in the center, and the screw hole 3 is formed.
Around the 0, a plurality of concave and convex portions are provided as locking portions 40 on the surface of the box cover 20 facing the form frame 80. In this case, the positional adjustment can be performed by sequentially utilizing the concave portions 42 of the concave and convex portions with respect to the positional deviation between the through hole 81 provided in the mold 80 and the screw hole 30. The recess 42 may be formed in a circular shape or a polygonal shape around the screw hole 30.

In FIGS. 8 and 9, the locking portion 40 has the box 1
It is each sectional drawing which shows the box 10 which is the concrete embedded object provided in the closing plate 13 which closes the opening 11 of 0. In the embodiment shown in FIG. 8, a recessed portion is formed as the locking portion 40 in the center of the closing plate 13 of the box 10, and the inner peripheral surface 43 of this recessed portion of the driver, which is the position adjusting tool 70, is formed. The tip can be locked. Further, in the center of the recess, there are screw holes 3 for the pulling bolt 90.
A nut 31 that becomes 0 is embedded. In the embodiment shown in FIG. 9, a plurality of concavo-convex portions are provided on the surface of the closing plate 13 facing the mold 80 as the locking portion 40, and the position adjusting tool 70 can be locked in the concave portion 44. Has become. Then, a nut 31 serving as a screw hole 30 is embedded in the center of the closing plate 13. The closing plate 13 has a thin periphery so that it can be separated to form the opening of the box 10. Even if the box 10 has a bottom wall, as shown in FIGS. 8 and 9,
The bottom wall may be formed by the installation tool 50 and may not have the bottom wall.

10 and 11 are cross-sectional views showing the box 10 which is a concrete buried object in which the locking portion 40 is provided on the inner surface of the bottom wall 12 of the box 10. In the embodiment shown in FIG. 10 and FIG. 11, the nut 31 which becomes the screw hole 30 of the pulling bolt 90 is embedded in the center of the bottom wall 12 of the box 10, and the screw hole 30 of the screw hole 30 serves as the locking portion 40. A plurality of protrusions 45, 46 are provided on the inner surface of the surrounding bottom wall 12. The protrusion 45 shown in FIG.
The projection 46 shown in 1 has a triangular cross section. The projections 45 and 46 may have any shape as long as they can be locked by the position adjusting tool 70, and the locking portion 40 may have a shape other than the projections 45 and 46.

Further, such a concrete buried object is temporarily fixed to the form 80, and the temporary fixing means may be the installation tool 50 (for example, FIGS. 1 to 5). In this case, the support rod 51 forming the support member of the installation tool 50 is deformed, and the box 10 having the screw holes 30 is formed.
Alternatively, the box cover 20 can be moved and temporarily fixed. Further, as another temporary fixing means, there may be a case where the reinforcing bar 60 is arranged longitudinally and laterally to form a fulcrum (FIG. 12). In this case, the reinforcing bars 60 can be temporarily fixed by moving.

1 to 5 are cross-sectional views of an embodiment of a concrete buried object in which the temporary fixing means is a bridge 50. In this case, the support rod 51 of the erection tool 50 is formed of a deformable material such as a mild steel wire, and can be bent by hand and has a tensile strength against the form 80 in the bent state. Is preferred. The support bar 51 may be a round bar or a square bar, and the support bar 51 may be formed of a deformable plate material. This support rod 51 is a mounting plate 5
The mounting plate 52 is integrally attached to the bottom wall 12 of the box 10 by caulking structure. The installation tool 50 is shown in FIGS.
The mounting plate 52 may double as the bottom wall of the box 10 and be integrally mounted on the box 10, as shown in FIG. Further, the support rod 51 may be integrally attached to the mounting plate 52 by spot welding, screwing, or the like. Further, the installation tool 50 may be one in which the support rod 51 and the mounting plate 52 are integrally formed by punching a plate material.

FIG. 12 is a cross-sectional view of an embodiment of a concrete buried object in which the temporary fixing means is a reinforcing bar 60 arranged longitudinally and laterally to form a fulcrum. In this case, the mounting tool 55 is attached to the bottom wall 12 of the box 10 with the reinforcing bar 60 sandwiched therebetween, and the reinforcing bar 60 is assembled by the wire 61 or the like, so that the mounting tool 55 is firmly attached to the box 10. When it is attached to, the reinforcing bar 60 itself moves and serves as a temporary fixing means.

In the present invention, the temporary fixing means is the form 80.
However, any means other than the installation tool 50 as shown in FIGS. 1 to 5 or the reinforcing bar 60 as shown in FIG. 12 may be used. Further, the locking portion 40 may have any shape as long as it can lock the position adjusting tool 70. The position adjusting tool 70 is not limited to the driver as shown in FIG. 2, and may be any rod-like one that can be inserted through the through hole 81 formed in the mold 80. Further, in the present invention, the locking portion 40 is provided in the box cover 20, for example, and the screw hole 3
It may be a concrete buried object in which the locking portion 40 and the screw hole 30 are provided in different members so that 0 is provided in the bottom wall 12 of the box 10.

[0024]

As described above, according to the embedding method and the concrete embedding according to the present invention, even if the through hole provided in the form and the screwing hole for screwing the pulling bolt are misaligned. By inserting a position adjuster from outside the formwork and locking it in the locking part without making the through holes of the formwork larger or more than one, the position adjustment can be done easily and the box etc. efficiently. It is possible to fix the concrete embedding in the above by closely contacting it with the formwork by using pulling bolts.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing one step of a method for burying a concrete buried object according to the present invention.

FIG. 2 is a cross-sectional view showing one step of the method for burying a concrete buried object according to the present invention.

FIG. 3 is a cross-sectional view showing one step of the method for burying a concrete buried object according to the present invention.

FIG. 4 is a cross-sectional view showing one step of the method for burying a concrete buried object according to the present invention.

FIG. 5 is a cross-sectional view showing one step of the method for burying a concrete buried object according to the present invention.

FIG. 6 is a cross-sectional view showing a box cover of an embodiment of the concrete buried object according to the present invention.

FIG. 7 is a cross-sectional view showing a box cover of an embodiment of a concrete buried object according to the present invention.

FIG. 8 is a cross-sectional view showing a box of an embodiment of the concrete buried object according to the present invention.

FIG. 9 is a cross-sectional view showing a box of an embodiment of the concrete buried object according to the present invention.

FIG. 10 is a cross-sectional view showing a box of an embodiment of a concrete buried object according to the present invention.

FIG. 11 is a cross-sectional view showing a box of an embodiment of a concrete buried object according to the present invention.

FIG. 12 is a cross-sectional view showing an example of a concrete buried object according to the present invention.

FIG. 13 is a cross-sectional view showing one step of a conventional method for burying a concrete buried object.

FIG. 14 is a cross-sectional view showing one step of a conventional method for burying a concrete buried object.

FIG. 15 is a cross-sectional view showing a misaligned state by a conventional method for burying a concrete buried object.

[Explanation of symbols]

10 boxes 11 openings 12 bottom wall 13 Block 20 box covers 30 screw holes 40 Locking part 50 installation tools 60 rebar 70 Position adjustment tool 80 formwork 81 through hole 90 pull bolt

Claims (2)

[Claims] 1. A concrete buried object having a screwing hole for screwing a pulling bolt and a locking portion for locking a position adjusting tool is temporarily fixed to the inside of a mold, and a transparent member drilled in the mold is provided. Insert the position adjuster into the hole from the outside of the mold and lock it in the locking part, adjust the position so that the through hole and the screw hole correspond, and then pull the pulling bolt from the outside of the mold to the through hole. A method for fixing a concrete buried object to a formwork, which comprises inserting the concrete buried object into the formwork by inserting it into the screw hole and screwing it into the screw hole. 2. A through hole formed in the mold has a screwing hole into which a pulling bolt inserted from the outside of the mold is screwed, and the screwing hole is drawn by the pulling bolt to form the mold. It is a concrete buried object that is tightly fixed to the inner surface of the frame, and is inserted from the outside of the mold to adjust the position of the screw hole and the through hole in a state of being temporarily fixed to the mold. A concrete buried object, wherein a locking portion for locking the position adjusting tool is provided so as to face the inner surface of the mold.