JP4585706B2 - Joint material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint member that forms joint portions on the surface of a concrete structure such as a foundation of a building.
[0002]
[Prior art]
Conventionally, as shown in FIG. 11, the foundation 33 serving as the foundation of the building has been made with a smooth surface exposed to the outside of the building. Such a foundation 33 with a smooth surface was apt to change and look bad. For this reason, after placing the concrete foundation 33, the surface of the foundation 33 has been improved by spraying a mortar on the surface to give a concavo-convex pattern or tiling.
[0003]
However, the foundation 33 on which mortar coating or tiling is applied as described above has a problem that the number of construction steps increases, the cost increases, and the construction period also increases.
[0004]
In view of this, as a method for forming a concavo-convex pattern on the surface of the foundation 33, for example, a pattern plate 30 for concrete form disclosed in JP-A-8-218625 has been devised and implemented. As shown in FIG. 12, the concrete formwork pattern plate 30 is made of a thin plate having protrusions 35 for forming concave and convex patterns 34 and grooves on the front and back surfaces. Then, the molds 31 and 32 facing each other with a predetermined interval are arranged side by side on the inner surface of the mold 31 located on the outer surface of the concrete structure, and concrete is poured into the space between the two molds 31 and 32. As a result, the concavo-convex pattern 34 and grooves of the pattern plate 30 are transferred onto the surface of the foundation 33.
[0005]
[Problems to be solved by the invention]
However, in any of the above conventional methods, it is inevitable that a seam is generated between adjacent molds 31 or between pattern plates 30. Thus, if there is a seam between the formwork 31 and the pattern board 30, the seam is transferred to the surface of the concrete structure, which is not aesthetically pleasing, and the seam part is repaired by hanging or plastering. There is a problem that it is necessary to carry out post-processing work.
[0006]
Moreover, in the said pattern board 30, since an uneven | corrugated pattern and a groove | channel are directly formed in the surface of the concrete foundation 33, a crack tends to enter along a groove | channel. When such a crack occurs, it is not preferable in terms of appearance because it is darkened due to wind and rain or dust intrusion, and a stain is noticeable around the periphery. Further, in the pattern board 30, only grooves are formed directly on the concrete surface. For example, in order to form a joint-like pattern to give a brick or masonry appearance, it is formed on the surface. There is a problem that it is necessary to inject plaster or the like again into the groove, which increases the cost of the construction process and increases the construction period.
[0007]
Furthermore, since the said pattern board 30 is a thin plate which has uneven | corrugated shape in front and back, there exists a problem that an uneven | corrugated shape is easy to be crushed and it is not suitable for repeated use. Moreover, unless the mold release agent is applied, the uneven pattern 34 and the grooves cannot be transferred cleanly, and it takes a lot of work to perform such operations. Further, it is necessary to fix the pattern plate 30 on the inner surface of the mold 31 with screws, etc., and the amount of work required to attach and remove the pattern plate 30 is extremely large, which increases the construction cost.
[0008]
In general, a reinforcing bar or the like is embedded as a reinforcing member in a concrete structure. When such a reinforcing bar appears on the surface of a concrete structure, the appearance is remarkably deteriorated and the strength is inevitably lowered. For this reason, as shown in FIG. 13, a plurality of spacers 37 are attached to the reinforcing bars 36, and the reinforcing bars 36 are positioned by visually checking the gaps between the spacers 37 and the inner surfaces of the molds 31, 32 one by one. It is. Such a visual positioning operation is not very complicated, and if the adjustment is insufficient, the spacer 37 is exposed on the surface of the concrete structure, leading to an irreparable construction failure.
[0009]
The present invention has been made in view of such circumstances, and has as its first object the provision of a joint member that can easily form a joint-like pattern without creating a seam on the surface of a concrete structure. A second object is to provide a joint member that can very easily position a reinforcing member embedded in a structure.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a joint member of the present invention is a joint member embedded in concrete to form a joint portion on the surface of a concrete structure, the joint portion main body forming the joint portion, and for concrete And a sandwiching portion that is sandwiched between the molds and supports the joint body on the inner surface of the concrete mold . The joint body extends toward the inside of the concrete structure and is embedded in the concrete structure. that positioning member capable of positioning the reinforcing member is formed to Abstract.
[0011]
That is, the eye ground member of the present invention includes a joint body to form a joint-like portion, and a clamping portion which is sandwiched between the adjacent concrete formwork by supporting the joint body with the inner surface of the concrete formwork ing. For this reason, when a concrete material is placed in a state where the joint part is supported by supporting the joint body by sandwiching the sandwiching part at the joint part of the formwork on the inner surface of the concrete formwork, and after curing and curing, the concrete formwork is peeled off The joint part main body remains in a state where it is embedded in the surface part of the concrete structure, and a joint-like pattern is formed in that part. Therefore, the seam is not transferred to the surface of the concrete structure, and it is excellent in aesthetics, and the complicated post-processing work for repairing the seam part by hanging or plastering work is not necessary, and the construction period can be shortened. Cost reduction is also possible.
[0012]
In addition, because the joint body itself remains embedded in the joint pattern, the brickwork or masonry style, etc., where a beautiful joint appears without the need to inject stucco etc. Can give out the appearance. Therefore, the construction process is simplified as compared with the conventional case, the cost is reduced, and the construction period is shortened. In addition, since the joint body itself remains embedded in the concrete, cracks that can occur in the process of curing and curing the concrete are likely to occur inside the joint body, even if cracks have occurred. Hidden in the joint body itself and hardly noticeable. Accordingly, there is almost no noticeable blackening of cracks as in the prior art, and the appearance is remarkably improved.
Further, when a positioning member capable of positioning a reinforcing member embedded in the concrete structure is formed on the joint main body, the joint member is formed on the inner surface of the concrete mold. In a state in which the reinforcing member is attached, the reinforcing member can be positioned without using a spacer as in the related art simply by bringing the reinforcing member into contact with the tip of the positioning member. Therefore, a complicated positioning operation for visually confirming the gap between the spacer and the inner surface of the mold one by one is not required. Furthermore, since the reinforcing member is embedded in the concrete while being in contact with the tip of the positioning member, even if the adjustment is slightly worse, the defect that the reinforcing member or the like is exposed on the surface of the concrete structure does not occur.
[0013]
In the eye locations member of the present invention, the clamping portion is, if it is protruded portion facing the concrete formwork joints body a clamping portion at the joint portion of the formwork for concrete formwork inner surface The joint pattern can be easily formed on the surface portion of the concrete structure.
[0014]
In the eye locations member of the present invention, when the base of the clamping portion is cleavable formed is, after embedded joint portion body on the surface portion of the concrete structure, by cutting the clamping portion from the root, A pinch having a beautiful appearance can be formed by easily removing the pinched portion that has become unnecessary.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail.
[0025]
FIG. 1 shows an embodiment of a joint member 10 of the present invention. The joint member 10 is integrally formed of a synthetic resin, and has a joint body 1 having a substantially C-shaped cross section (C-shaped opening faces downward in the drawing) and the C-shaped cross section. A sandwiching portion 2 formed in a strip shape at the substantially center of the inner surface and a plate-like positioning member 3 projecting and formed at the center of the outer surface of the C-shaped cross section are provided. Further, the left and right outer surfaces of the C-shaped cross section are provided with retaining pieces 5 formed to project in the illustrated lateral direction.
[0026]
The joint member 10 is formed in a long shape and has a length dimension (L in the drawing) substantially equal to the height of the concrete formwork.
[0027]
The joint member 10 is embedded in the concrete up to the positioning member 3, the retaining piece 5 and the C-shaped opening edge of the joint body 1 so that the interior space of the joint body 1 is the surface of the concrete structure. A groove-shaped joint is formed on the surface.
[0028]
Here, the sandwiching portion 2 is formed to project from a portion of the joint body 1 that faces the concrete mold, and the tip is sandwiched by the joint portion of the concrete mold, The joint member 10 is supported.
[0029]
A barb 8 is formed at the front end of the sandwiching portion 2 to function as a retaining portion when sandwiched between concrete molds. Moreover, the base joined to the joint part main body 1 of the said clamping part 2 is formed in the thin part 7, and can be easily fractured by holding the clamping part 2 with fingers and bending it several times from the root. Yes.
[0030]
Further, in this state, the retaining piece 5 and the positioning member 3 are embedded in the concrete and exert the function of retaining the joint member 10.
[0031]
Further, the positioning member 3 is formed to protrude toward the inside of the concrete structure, and as will be described later, the reinforcing bar 13 is embedded as a reinforcing member for reinforcing the concrete (see FIG. 5). And the rebar 13 is positioned.
[0032]
The positioning member 3 has a plurality of V-grooves 6 extending in the longitudinal direction on both surfaces thereof at regular intervals. The V-groove 6 functions as a scale indicating the depth from the surface of the concrete structure, and the scale portion is formed thin, so that the positioning member 3 can be easily cut at the scale portion. It has become. Thereby, the suitable depth which embeds the reinforcing bar 13 according to the magnitude | size of a concrete structure can be set now.
[0033]
The joint member 10 having the above configuration can be used as follows, for example.
[0034]
That is, first, as shown in FIG. 2, a plurality of concrete molds 12 are installed so as to face each other at a predetermined interval. Concrete is placed in a space sandwiched between the concrete molds 12.
[0035]
Next, as shown in FIG. 3, reinforcing bars 13 and anchor bolts 14 that are reinforcing members are installed in the space between the facing concrete molds 12. A plurality of the anchor bolts 14 are erected at a predetermined interval, and the reinforcing bars 13 are installed over the plurality of anchor bolts 14 and are fastened and fixed to the respective anchor bolts 14 with a wire (not shown) or the like.
[0036]
Next, as shown in FIG. 4, the positioning member 3 of the joint member 10 is cut from the V-groove 6 portion leaving a necessary dimension. That is, the dimension (D in the figure) of the remaining portion of the positioning member 3 is set to be the depth from the surface of the concrete structure of the rebar 13 to be embedded.
[0037]
Next, as shown in FIG. 5, the leading end portion of the clamping portion 2 of each joint member 10 is clamped at the joint between the concrete molds 12. At this time, the opening of the joint body 1 is brought into close contact with the inner surface of the concrete mold 12. In this state, the tip of the positioning member 3 comes into contact with the reinforcing bar 13, and the distance of the reinforcing bar 13 from the inner surface of the concrete mold 12 (that is, the depth from the surface of the concrete structure) is determined.
[0038]
In this way, since the positioning member 3 can be cut at the V-groove 6 portion, the positioning member 3 is cut to an appropriate size in accordance with the V-groove 6, and the reinforcing bar is positioned at an appropriate depth by the cut positioning member 3. 13 can be buried.
[0039]
Next, as shown in FIG. 6, in a state where the joint member 10 is attached to the joint of the concrete formwork 12 and the reinforcing bar 13 is positioned at a predetermined position, the concrete 15 is placed in the space between the facing concrete formwork 12. To cast. Then, after the concrete 15 is cured and hardened, the concrete mold 12 is peeled and removed as shown in FIG. In this state, the joint member 10 is embedded in the concrete 15, and the groove 16 formed by the joint body 1 is formed on the surface of the concrete structure 15.
[0040]
Then, as shown in FIG. 8, the clamping part 2 of the joint member 10 is cut and removed from the root. As a result, the unnecessary sandwiching 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.
[0041]
As described above, in the joint member 10, the concrete 15 is placed in a state where the joint portion 2 is sandwiched between the joint portions of the inner surface of the concrete mold 12 and the joint portion main body 1 is supported. The mold 12 is peeled and removed. By doing so, the joint body 1 remains 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 it is excellent in aesthetics, and the complicated post-processing work for repairing the seam part by picking or plastering work is unnecessary, and the construction period can be shortened. Cost reduction.
[0042]
Further, since the joint body 1 remains embedded in the pattern of the groove 16, the brick or stone masonry where a beautiful joint appears as it is without injecting plaster or the like into the groove 16 as in the prior art. Appearance such as wind can be produced. Therefore, the construction process is simplified as compared with the conventional case, the cost is reduced, and the construction period is shortened. Further, since the joint body 1 is left embedded in the concrete 15, cracks that may occur during the curing and curing process of the concrete 15 are likely to occur inside the joint body 1, even if cracks are generated. Even if it enters, it hides in the joint part main body 1 and becomes hardly conspicuous. Therefore, there is almost no noticeable blackening of cracks as in the prior art, and the appearance is remarkably improved.
[0043]
Further, in the joint member 10, the reinforcing bar 13 can be used without using a spacer as in the prior art by simply bringing the reinforcing bar 13 into contact with the tip of the positioning member 3 with the joint member 10 attached to the inner surface of the concrete mold 12. Can be positioned. Therefore, a complicated positioning operation for visually confirming the gap between the spacer and the inner surface of the mold frame 12 one by one becomes unnecessary. Further, since the reinforcing bar 13 is embedded in the concrete 15 in contact with the tip of the positioning member 3, there is a defect that the reinforcing bar 13 or the like is exposed on the surface of the concrete structure 15 even if the adjustment is slightly worse. Does not occur.
[0044]
FIG. 9 shows a joint member 10 according to the second embodiment of the present invention. In this, the joint body 1 is formed in a flat plate shape, not a groove forming member having a C-shaped cross section. Thus, in the present invention, various shapes can be adopted as the shape of the joint body 1 that forms the joint portion in accordance with the form of the joint to be made. Other than that, it is the same as that of the said embodiment, and the same code | symbol is attached | subjected to the same part. This also has the same effect as the above embodiment.
[0045]
FIG. 10 shows a joint member 10 according to a third embodiment of the present invention. In this device, the V-groove 6 is not formed on the surface of the positioning member 3. And the notch 17 extended toward the joint part main body 1 from the edge part of the positioning member 3 is formed. A plurality of locking recesses 18 are formed in the notches 17 at predetermined intervals. In this configuration, the reinforcing bar 13 is positioned by inserting the reinforcing bar 13 into the notch 17 and locking it with the locking recess 18. Other than that, it is the same as that of each said embodiment, and attaches | subjects the same code | symbol to the same part. This also has the same effects as the above embodiments.
[0046]
In the above embodiments, the retaining pieces 5 are formed so as to extend in the lateral direction. However, the present invention is not limited to this, and various shapes can be used as long as the joint member 10 can be retained from the concrete. Can be formed. In addition, by forming a rough surface on the surface of the joint body 1 that contacts the concrete 15, the rough surface bites into the concrete 15 and exerts a throwing effect, thereby effectively preventing the joint body 1 from coming off the concrete 15. You can also. Moreover, in the said embodiment, although the braille member 10 was attached to the both sides of the concrete formwork 12 which faced, it can also be made only into the one side corresponding to the surface which can be seen.
[0047]
【The invention's effect】
As described above, the first joint member of the present invention is sandwiched between the joint main body forming the joint-like portion and the concrete mold and supports the joint main body on the inner surface of the concrete mold. And a clamping part. For this reason, when a concrete material is placed in a state where the joint part is supported by supporting the joint body by sandwiching the sandwiching part at the joint part of the formwork on the inner surface of the concrete formwork, and after curing and curing, the concrete formwork is peeled off The joint part main body remains in a state where it is embedded in the surface part of the concrete structure, and a joint-like pattern is formed in that part. Therefore, the seam is not transferred to the surface of the concrete structure, and it is excellent in aesthetics, and the complicated post-processing work for repairing the seam part by hanging or plastering work is not necessary, and the construction period can be shortened. Cost reduction is also possible.
[0048]
In addition, because the joint body itself remains embedded in the joint pattern, the brickwork or masonry style, etc., where a beautiful joint appears without the need to inject stucco etc. Can give out the appearance. Therefore, the construction process is simplified as compared with the conventional case, the cost is reduced, and the construction period is shortened. In addition, since the joint body itself remains embedded in the concrete, cracks that may occur during the curing and curing process of concrete are likely to occur inside the joint body, even if cracks have occurred. Hidden in the joint body itself and hardly noticeable. Therefore, there is almost no noticeable blackening of cracks as in the prior art, and the appearance is remarkably improved.
Further, when a positioning member capable of positioning a reinforcing member embedded in the concrete structure is formed on the joint main body, the joint member is formed on the inner surface of the concrete mold. In a state in which the reinforcing member is attached, the reinforcing member can be positioned without using a spacer as in the related art simply by bringing the reinforcing member into contact with the tip of the positioning member. Therefore, a complicated positioning operation for visually confirming the gap between the spacer and the inner surface of the mold one by one is not required. Furthermore, since the reinforcing member is embedded in the concrete while being in contact with the tip of the positioning member, even if the adjustment is slightly worse, the defect that the reinforcing member or the like is exposed on the surface of the concrete structure does not occur.
[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 usage state of the joint member.
FIG. 3 is a plan view showing an example of a usage state of the joint member.
FIG. 4 is a plan view showing an example of a usage state of the joint member.
FIG. 5 is a plan view showing an example of a usage state of the joint member.
FIG. 6 is a plan view showing an example of a usage state of the joint member.
FIG. 7 is a plan view showing an example of a usage state of the joint member.
FIG. 8 is a plan view showing an example of a usage 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 third embodiment of a joint member of the present invention.
FIG. 11 is a perspective view showing a foundation.
12A and 12B are diagrams showing a conventional pattern board, in which FIG. 12A is an exploded perspective view showing a use state, FIG. 12B is a perspective view, and FIG.
13A and 13B are diagrams showing a conventional reinforcing bar positioning method, in which FIG. 13A is a plan view, and FIG. 13B is a cross-sectional view of a main part.
[Explanation of symbols]
1 Joint body 2 Nipping part

Claims (3)

A joint member that is embedded in concrete and forms joints on the surface of a concrete structure. The joint member is sandwiched between the joint body forming the joints and the concrete formwork to form a concrete formwork. A positioning member capable of positioning a reinforcing member that extends toward the inside of the concrete structure and is embedded in the concrete structure is formed on the joint body. A joint member characterized by that.   The joint member according to claim 1, wherein the sandwiching portion is formed to project from a portion of the joint body that faces the concrete mold.   The joint member according to claim 2, wherein a base of the clamping portion is formed so as to be cut.

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