JP2002276041A - Joint member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint member capable of easily forming a joint-like pattern without forming a seam on a surface of a concrete structure. SOLUTION: This joint member is provided with a joint part body 1 for forming a joint-like part, and a sandwiching part 2 sandwiched between mutual concrete forms, and supporting the joint part body 1 on an inside surface of the concrete forms. A concrete material is placed in a state of supporting the joint part body 1 by sandwiching the sandwiching part 2 in a form seam part of a concrete form inside surface. When separating and removing the concrete forms after curing and hardening, the joint part body 1 remains in a surface part of the concrete structure in an embedded state, and the joint-like pattern is formed in the part. Thus, the seam is not transferred to the surface of the concrete structure so that a beautiful appearance is improved, and complicated postprocessing work for recovering the seam part by chipping and plasterer work is obviated so that a construction period can be shortened, and a cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint member for forming joints on the surface of a concrete structure such as a foundation of a building.

[0002]

2. Description of the Related Art Conventionally, a foundation 33 serving as a foundation of a building is:
As shown in FIG. 11, the surface exposed to the outside of the building was made smooth. Such a foundation 33 having a smooth surface tends to have a poor appearance due to lack of change. For this reason, after the concrete foundation 33 is cast, mortar is sprayed on the surface to give an uneven pattern or to be tiled to improve the appearance of the foundation 33.

[0003] However, the foundation 33 on which mortar is applied or tiled as described above has a problem that the number of construction steps is increased, the cost is increased, and the construction period is prolonged.

In order to form an uneven pattern on the surface of the foundation 33, for example, a concrete mold pattern plate 30 disclosed in JP-A-8-218625 has been devised and put into practice. As shown in FIG. 12, the concrete formwork pattern plate 30 is made of a thin plate having an uneven pattern 34 and a ridge 35 for forming a groove on the front and back surfaces. Then, the molds 31, 32 facing each other at a predetermined interval are arranged along the inner surface of the mold 31 positioned on the outer surface of the concrete structure, and concrete is poured into the space between the molds 31, 32. By providing, the uneven pattern 34 and the groove of the pattern board 30 are transferred to the surface of the foundation 33.

[0005]

However, in the above-mentioned conventional construction methods, it is unavoidable that a seam is formed between the adjacent formwork 31 or between the pattern boards 30. If there is a seam between the formwork 31 and the pattern board 30 as described above, the seam is transferred to the surface of the concrete structure, which is not aesthetically pleasing, and the seam portion is extremely complicated to be repaired by hanging or plastering work. There has been a problem that a need for a post-processing work is required.

Further, in the pattern board 30, since an uneven pattern or a groove is formed directly on the surface of the concrete base 33, cracks are easily formed along the groove. When such cracks occur, the appearance of the surface is unpreferable because it becomes dark or has a conspicuous stain on the periphery due to the entry of wind and rain or dust.
Further, in the pattern plate 30, since only grooves are formed directly on the surface of concrete, for example, in order to form a joint-like pattern to give the appearance of brickwork or masonry-like, it is formed on the surface. It is necessary to re-inject the plaster or the like into the groove, which increases the number of construction steps, increases the cost, and increases the construction period.

Further, since the pattern plate 30 is a thin plate having irregularities on the front and back surfaces, there is a problem that the irregularities are easily crushed and are not suitable for repeated use. In addition, if the release agent is not applied, the concave and convex pattern 34 and the groove cannot be transferred cleanly, and such operations also require man-hours. Further, it is necessary to perform screwing or the like to arrange and fix the pattern boards 30 on the inner surface of the formwork 31, so that the amount of work required for mounting and removing the pattern boards 30 is extremely large, and the construction cost is accordingly high.

[0008] Generally, a reinforcing bar or the like is buried as a reinforcing member in a concrete structure. Such a rebar has a remarkably poor appearance when seen on the surface of a concrete structure, and is inevitably reduced in strength. For this reason, as shown in FIG.
A plurality of spacers 37 are attached to each of them, and the gap between each of the spacers 37 and the inner surfaces of the molds 31 and 32 is visually checked one by one to position the reinforcing bar 36. Such visual positioning work is extremely complicated and, if the adjustment is insufficient, leads to irreparable construction failure in which the spacer 37 is exposed on the surface of the concrete structure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a first object of the present invention is to provide an joint member capable of easily forming an joint pattern without forming a joint on the surface of a concrete structure. A second object of the present invention is to provide a joint member that can extremely easily position a reinforcing member embedded in a concrete structure.

[0010]

To achieve the above object, an joint member according to the present invention is a joint member buried in concrete to form a joint on a surface of a concrete structure. It is a first gist that the joint body includes a joint body to be formed and a sandwiching portion that is sandwiched between the concrete molds and supports the joint body on the inner surface of the concrete mold.

That is, the first joint member of the present invention is supported between the joint body forming the joint-shaped part and the concrete form by being held between the concrete forms. A holding portion. For this reason, concrete material is poured in a state where the holding portion is sandwiched between joint portions of the formwork on the inner surface of the concrete formwork and the joint body is supported, and after curing and curing, the concrete formwork is peeled off and removed. Then, the joint portion main body remains buried in the surface portion of the concrete structure, and a joint-like pattern is formed in that portion. Therefore, the seam is not transferred to the surface of the concrete structure, and the surface is excellent in aesthetic appearance. Further, complicated post-processing work for repairing the seam portion by hanging, plastering, or the like becomes unnecessary, and the construction period can be shortened. Cost reduction is also possible.

Further, since the joint body remains in the joint-like pattern in a state where the joint body is buried, even if the plaster or the like is not newly injected into the groove as in the prior art, the brick pile or the brick joint with the beautiful joint as it is appears. The appearance such as a masonry style can be obtained. Therefore, the construction process is simplified, the cost is reduced, and the construction period is shortened as compared with the related art. Also, since the joint body remains in the state buried in the concrete, cracks that may occur in the process of curing and hardening of the concrete,
The joint body is likely to be formed inside the buried part, and even if a crack is formed, the joint body is hidden by the joint body and becomes almost inconspicuous. Therefore, unlike the conventional case, the darkening of the crack is hardly noticeable, and the appearance is remarkably improved.

In the first joint member according to the present invention, when the holding portion is formed so as to protrude from a portion of the joint portion main body facing the concrete formwork, the joint of the formwork on the inner surface of the concrete formwork is provided. The holding portion can be held between the portions, so that a joint-like pattern can be easily formed on the surface of the concrete structure.

In the first joint member according to the present invention, when the base of the holding portion is formed so as to be cuttable, the joint body is buried in the surface of the concrete structure, and then the holding portion is moved from the base. By cutting, the unnecessary holding portion can be easily removed to form a joint having a beautiful appearance.

In the first joint member according to the present invention, the joint member main body is provided with a positioning member extending toward the inside of the concrete structure and capable of positioning a reinforcing member embedded in the concrete structure. In this method, with the joint member attached to the inner surface of the concrete form, the reinforcing member can be positioned without using a spacer as in the related art only by bringing the reinforcing member into contact with the tip of the positioning member. Therefore, it is unnecessary to perform a complicated positioning operation for visually confirming the gap between the spacer and the inner surface of the mold one by one as in the related art. Furthermore, since the reinforcing member is buried in the concrete in a state in which the reinforcing member is in contact with the tip of the positioning member, a defect such as the reinforcing member or the like being exposed on the surface of the concrete structure does not occur even if adjustment is somewhat poor.

The joint member of the present invention is a joint member buried in concrete to form a joint on the surface of a concrete structure. A second feature is that a positioning member extending inward and capable of positioning a reinforcing member embedded in a concrete structure is formed.

That is, the second joint member of the present invention is a positioning member capable of positioning a reinforcing member extending toward the inside of the concrete structure and embedded in the concrete structure, on the joint body forming the joint portion. A member is formed. For this reason, in the state where the joint member is attached to the inner surface of the concrete form, the reinforcing member can be positioned without using a spacer as in the related art only by bringing the reinforcing member into contact with the tip of the positioning member. Therefore, it is unnecessary to perform a complicated positioning operation for visually confirming the gap between the spacer and the inner surface of the mold one by one as in the related art. Further, since the reinforcing member is buried in the concrete in a state in which the reinforcing member is in contact with the tip of the positioning member, even if the adjustment is somewhat poor, a defect such as the reinforcing member being exposed on the surface of the concrete structure does not occur.

In addition, since the joint body remains in the joint-like pattern in a state in which the joint body is buried, a brick joint having a beautiful joint as it is without having to inject plaster or the like into the groove as in the related art. The appearance such as a masonry style can be obtained. Therefore, the construction process is simplified, the cost is reduced, and the construction period is shortened as compared with the related art. Also, since the joint body remains in the state buried in the concrete, cracks that may occur in the process of curing and hardening of the concrete,
The joint body is likely to be formed inside the buried part, and even if a crack is formed, the joint body is hidden by the joint body and becomes almost inconspicuous. Therefore, unlike the conventional case, the darkening of the crack is hardly noticeable, and the appearance is remarkably improved.

In the joint member of the present invention, when the positioning member is provided with a scale indicating a depth from the surface of the concrete structure, a reinforcing member is embedded at an appropriate depth in accordance with the scale. Can be done.

In the joint member of the present invention, when the scale is formed so that the positioning member can be cut at the scale portion, the positioning member is cut into appropriate dimensions in accordance with the scale, and the cutting is performed. The reinforcing member can be embedded at an appropriate depth by the positioning member thus set.

In the joint member according to the present invention, when the joint of the joint portion main body embedded in the concrete and in contact with the concrete is formed as a retaining portion that bites into the concrete, the joint portion main body is removed from the concrete material. It is stopped and hardly loses its appearance.

In the joint member according to the present invention, when the joint portion main body is a groove forming member that forms a groove, a groove is formed on the surface of the concrete structure by the groove forming member, and the appearance is improved. .

In the joint member of the present invention, when the retaining portion is a rough surface formed on the surface of the joint portion main body which is embedded in the concrete and is in contact with the concrete, the rough surface cuts into the concrete and anchors. And the joint body is effectively prevented from falling out of the concrete, so that the joint is hardly detached and the appearance is hardly impaired.

[0024]

Next, embodiments of the present invention will be described in detail.

FIG. 1 shows an embodiment of a joint member 10 according to the present invention. The joint member 10 is integrally formed of a synthetic resin, and has a joint portion main body 1 having a substantially C-shaped cross section (a C-shaped opening faces downward in the figure) and the C-shaped cross section. A holding portion 2 formed in a band shape substantially at the center of the inner surface;
And a plate-shaped positioning member 3 protruding substantially at the center of the outer surface of the character. Further, on the left and right sides of the outer surface having the C-shaped cross section, there are provided retaining pieces 5 formed so as to protrude in the lateral direction shown in the figure.

The joint member 10 is formed in a long shape.
The length dimension (L in the drawing) is formed so as to be substantially equal to the height of the concrete formwork.

In the joint member 10, the positioning member 3, the retaining piece 5 and the C-shaped opening edge of the joint main body 1 are buried in concrete, so that the internal space of the joint main body 1 has a concrete structure. Groove-shaped joints are formed on the surface of the object.

Here, the holding portion 2 is formed so as to protrude from a portion of the joint body 1 facing the concrete formwork, and the leading end portion is held between joint portions of the concrete formwork to form the concrete formwork. The joint member 10 is supported on the inner surface of the joint member.

A barb 8 is formed at the tip of the holding portion 2 so as to function as a retaining portion when held by the concrete formwork. Further, the base of the holding portion 2 joined to the joint portion main body 1 is formed in the thin portion 7 and the holding portion 2 is formed.
By grasping with your fingers and bending several times from the root,
It can be easily broken.

Further, in this state, the retaining piece 5 and the positioning member 3 are buried in the concrete and exert the function of retaining the joint member 10.

Further, the positioning member 3 is formed to protrude so as to extend toward the inside of the concrete structure, and as described later, a reinforcing bar 13 (see FIG. 1) as a reinforcing member embedded in the concrete structure to reinforce the concrete. 5) to position the reinforcing bar 13.

A plurality of V-grooves 6 extending in the longitudinal direction are formed on both surfaces of the positioning member 3 at regular intervals. The V-groove 6 functions as a scale indicating the depth from the surface of the concrete structure, and since the scale is formed to be thin, the positioning member 3 is easily cut at the scale. Has become. This makes it possible to set an appropriate depth at which the reinforcing bar 13 is embedded according to the size of the concrete structure.

The joint member 10 having the above structure can be used, for example, as follows.

First, as shown in FIG. 2, a plurality of concrete formwork 12 are installed so as to face each other at a predetermined interval. The concrete form 1
Concrete is poured into the space between the two.

Next, as shown in FIG. 3, a reinforcing bar 13 and an anchor bolt 14, which are reinforcing members, are installed in the space between the concrete forms 12 facing each other. A plurality of the anchor bolts 14 are erected at predetermined intervals, and the reinforcing bar 13 is erected over the plurality of anchor bolts 14.
Each of the anchor bolts 14 is fastened and fixed with a wire (not shown) or the like.

Next, as shown in FIG.
Of the positioning member 3 is cut from the V-groove 6 while keeping the required dimensions. That is, the dimension (D in the drawing) of the remaining portion of the positioning member 3 is set to be the depth of the embedded reinforcing bar 13 from the surface of the concrete structure.

Next, as shown in FIG.
The leading end of the holding portion 2 is clamped at the joint between the concrete formwork 12. At this time, the opening of the joint part main body 1 is brought into close contact with the inner surface of the concrete formwork 12. Then, in this state, the tip of the positioning member 3 abuts on the reinforcing bar 13, and the distance of the reinforcing bar 13 from the inner surface of the concrete formwork 12 (that is, the depth from the surface of the concrete structure) is determined.

As described above, since the positioning member 3 can be cut at the V groove 6, the positioning member 3 is cut into an appropriate size in accordance with the V groove 6, and the cut positioning member 3 has an appropriate depth. The reinforcing bar 13 can be embedded at the position.

Next, as shown in FIG. 6, in a state where the joint member 10 is attached to the joint of the concrete form 12 and the reinforcing bar 13 is positioned at a predetermined position, the space between the facing concrete forms 12 is set. Concrete 15 is poured into the concrete. Then, after the concrete 15 is cured and hardened, as shown in FIG. 7, the concrete formwork 12 is peeled and removed. In this state, the joint member 10 is buried in the concrete 15, and a groove 16 by the joint body 1 is formed on the surface of the concrete structure 15.

After that, as shown in FIG.
0 is cut off from the base and removed. Thus, the unnecessary holding portion is easily removed, and the concrete structure 15 decorated with the groove 16 formed by the joint body 1 on the surface is completed.

As described above, in the joint member 10, the concrete 15 is held in a state in which the joint portion 2 is sandwiched between the joints on the inner surface of the concrete formwork 12 and the joint body 1 is supported.
And after curing and curing, concrete formwork 12
Is peeled off. By doing so, the joint portion main body 1 remains buried in the surface portion of the concrete structure 15, and the pattern of the groove 16 is formed in that portion.
Therefore, the seam is not transferred to the surface of the concrete structure 15 and the appearance is excellent, and the complicated post-processing work for restoring the seam part by hanging or plastering work becomes unnecessary, and the construction period can be shortened. Cost can also be reduced.

The pattern of the groove 16 has a joint portion main body 1.
Remains in a buried state, so that the groove 1 is renewed as before.
Even if plaster or the like is not injected into 6, the appearance such as brickwork or masonry-like appearance with beautiful joints can be obtained as it is. Therefore, the construction process is simplified as compared to the past,
The cost is reduced and the construction period is shortened. Further, since the joint portion main body 1 is left buried in the concrete 15, cracks that may occur in the process of curing and hardening of the concrete 15 are likely to occur inside the embedded joint portion main body 1, and even if the cracks are formed, Joint part body 1 even if it enters
It is almost inconspicuous by hiding in. Therefore, unlike the conventional case, the darkening of the crack is hardly noticeable, and the appearance is remarkably improved.

In the joint member 10, the joint member 10 is mounted on the inner surface of the concrete formwork 12,
Just by bringing the reinforcing bar 13 into contact with the tip of the positioning member 3,
The reinforcing bar 13 can be positioned without using a conventional spacer. Therefore, it is not necessary to perform a complicated positioning operation for visually confirming the gap between the spacer and the inner surface of the mold 12 one by one as in the related art. Furthermore, since the reinforcing bar 13 is buried in the concrete 15 in a state in which it is in contact with the tip of the positioning member 3, even if the adjustment is somewhat poor, there is a defect that the reinforcing bar 13 and the like are exposed on the surface of the concrete structure 15. Does not occur.

FIG. 9 shows a joint member 10 according to a second embodiment of the present invention. The joint body 1 is not a groove forming member having a C-shaped cross section, but a flat plate. As described above, in the present invention, the shape of the joint portion main body 1 that forms the joint portion can adopt various shapes according to the form of the joint to be created. The other parts are the same as those of the above embodiment, and the same parts are denoted by the same reference numerals. This also has the same operation and effect as those of the above embodiment.

FIG. 10 shows a joint member 10 according to a third embodiment of the present invention. In this case, the V groove 6 is not formed on the surface of the positioning member 3. And positioning member 3
Cut 17 extending from the end of the joint toward the joint body 1
Are formed. The notch 17 has a plurality of locking recesses 18 formed at predetermined intervals. In this one,
The reinforcing bar 13 is positioned by inserting the reinforcing bar 13 into the cut 17 and locking it with the locking recess 18. The other parts are the same as those in the above embodiments, and the same parts are denoted by the same reference numerals. This also has the same operation and effect as those of the above embodiments.

In each of the above embodiments, the retaining piece 5 is formed so as to extend in the lateral direction. However, the present invention is not limited to this. It can be formed in various shapes. In addition, by forming a rough surface on the surface of the joint portion main body 1 in contact with the concrete 15, the rough surface digs into the concrete 15 to exert an anchoring effect, thereby effectively preventing the joint portion main body 1 from coming off from the concrete 15. Can also. Further, in the above embodiment, the eyelet members 10 are attached to both sides of the concrete formwork 12 facing each other, but it is also possible to provide only one side corresponding to the visible surface.

[0047]

As described above, the first joint member according to the present invention is provided between the joint body forming the joint-like portion and the concrete form, and the joint is formed on the inner surface of the concrete form. And a holding portion for supporting the main body. For this reason, concrete material is poured in a state where the holding portion is sandwiched between joint portions of the formwork on the inner surface of the concrete formwork and the joint body is supported, and after curing and curing, the concrete formwork is peeled off and removed. Then, the joint portion main body remains buried in the surface portion of the concrete structure, and a joint-like pattern is formed in that portion. Therefore, the seam is not transferred to the surface of the concrete structure, and the surface is excellent in aesthetic appearance. Cost reduction is also possible.

Further, since the joint body remains in the joint pattern in a state where the joint body is buried, even if a plaster or the like is not newly injected into the groove as in the prior art, a brick pile or the like which has a beautiful joint as it is appears. The appearance such as a masonry style can be obtained. Therefore, the construction process is simplified, the cost is reduced, and the construction period is shortened as compared with the related art. Also, since the joint body remains in the state buried in the concrete, cracks that may occur in the process of curing and hardening of the concrete,
The joint body is likely to be formed inside the buried part, and even if a crack is formed, the joint body is hidden by the joint body and becomes almost inconspicuous. Therefore, unlike the conventional case, the darkening of the crack is hardly noticeable, and the appearance is remarkably improved.

Further, the second joint member of the present invention is a positioning member which extends toward the inside of the concrete structure and is capable of positioning a reinforcing member embedded in the concrete structure, on the joint body forming the joint portion. A member is formed.
For this reason, in the state where the joint member is attached to the inner surface of the concrete form, the reinforcing member can be positioned without using a spacer as in the related art only by bringing the reinforcing member into contact with the tip of the positioning member. Therefore, it is unnecessary to perform a complicated positioning operation for visually confirming the gap between the spacer and the inner surface of the mold one by one as in the related art.
Furthermore, since the reinforcing member is buried in the concrete in a state in which the reinforcing member is in contact with the tip of the positioning member, a defect such as the reinforcing member or the like being exposed on the surface of the concrete structure does not occur even if adjustment is somewhat poor.

In addition, since the joint body remains in the joint-like pattern in a state where the joint body is buried, even if the plaster or the like is not newly injected into the groove as in the prior art, it is possible to use a brick pile or the like which has a beautiful joint as it is. The appearance such as a masonry style can be obtained. Therefore, the construction process is simplified, the cost is reduced, and the construction period is shortened as compared with the related art. Also, since the joint body remains in the state buried in the concrete, cracks that may occur in the process of curing and hardening of the concrete,
The joint body is likely to be formed inside the buried part, and even if a crack is formed, the joint body is hidden by the joint body and becomes almost inconspicuous. Therefore, unlike the conventional case, the darkening of the crack is hardly noticeable, and the appearance is remarkably improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a joint member according to an embodiment of the present invention.

FIG. 2 is a plan view showing an example of a use state of the joint member.

FIG. 3 is a plan view showing an example of a use state of the joint member.

FIG. 4 is a plan view showing an example of a use state of the joint member.

FIG. 5 is a plan view showing an example of a use state of the joint member.

FIG. 6 is a plan view showing an example of a use state of the joint member.

FIG. 7 is a plan view showing an example of a use state of the joint member.

FIG. 8 is a plan view showing an example of a use state of the joint member.

FIG. 9 is a perspective view showing a joint member according to a second embodiment of the present invention.

FIG. 10 is a perspective view showing a joint member according to a third embodiment of the present invention.

FIG. 11 is a perspective view showing a foundation.

12A and 12B are diagrams showing a conventional pattern board, wherein FIG. 12A is an exploded perspective view showing a used state, FIG. 12B is a perspective view, and FIG. 12C is a sectional view.

FIG. 13 is a view showing a conventional rebar positioning method,
(A) is a plan view, and (b) is a cross-sectional view of a main part.

[Explanation of symbols]

 1 Joint part body 2 Holding part

Claims (7)

[Claims] A joint member embedded in concrete to form joints on a surface of a concrete structure,
An joint member comprising: an joint portion main body forming an joint-like portion; and a holding portion sandwiched between the concrete formwork and supporting the joint portion main body on an inner surface of the concrete formwork. 2. The joint portion is formed so as to protrude from a portion of the joint portion main body facing the concrete formwork.
The joint member as described. 3. The joint member according to claim 2, wherein a base of said holding portion is formed so as to be cut. 4. The joint member according to claim 1, wherein a positioning member extending toward the inside of the concrete structure and capable of positioning a reinforcing member embedded in the concrete structure is formed in the joint body. The joint member according to Item. 5. A joint member buried in concrete to form a joint on a surface of a concrete structure,
A joint member, wherein a joint member forming the joint portion is provided with a positioning member extending toward the inside of the concrete structure and capable of positioning a reinforcing member embedded in the concrete structure. 6. The joint member according to claim 4, wherein the positioning member is provided with a scale indicating a depth from a surface of the concrete structure. 7. The joint member according to claim 6, wherein the scale is formed so that the positioning member can be cut at the scale.