JPH07224478A - Method and structure for fastening of permanent concrete form material - Google Patents

Abstract

PURPOSE:To consolidate a permanent form certainly with concrete and prevent separation from the concrete. CONSTITUTION:A permanent concrete form 1 is provided with a fixing hole 21 penetrating from the front to the rear surface. In the condition that the end of a separator 4 is inserted through the fixing hole 21, concrete K is placed to the concreting side 1a of the form 1. The fixing hole 21 is filled with an adhesive 27, and fixation is made by screwing a cap 23 to the end of the separator 4 within the fixing hole 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete structure such as a concrete wall (RC
Structure, SRC structure, etc.), and to a fastening structure and a fastening method for a permanent form material.

[0002]

2. Description of the Related Art In recent years, the inventors of the present invention have used an inorganic extruded molded plate (for example, an outer wall of a building, a partition wall, a frozen warehouse, an elevator shaft, a double floor, etc. As an example of the inorganic extruded plate, there is a trade name Lambda [manufactured by Showa Denko Kenzai Co., Ltd.], and it was further considered that the extruded plate is used as a part of the construct without demolding. This kind of inorganic extrusion-molded plate, in a factory or the like, cement, aggregate, and after being mixed by mixing water into various additives, kneaded and extruded, is formed by autoclave curing, The productivity is significantly improved, and the length, width, and cross-sectional shape can be freely selected, and the appearance, durability, fire resistance, and
It has a plurality of advantages that it is excellent in bending strength, tensile strength, and compression strength, and that the hollow structure facilitates weight reduction and improved heat insulation.

Here, FIG. 11 shows a case where a wall body is constructed by a permanent form material made of this extruded inorganic molding plate.
Explained by. First, the permanent mold materials 1 are arranged at a predetermined interval, and the separators 4 formed by connecting the shaft legs 3 to each other at both ends via the registration control 2 are arranged between the permanent mold materials 1. Then, the shaft legs 3 connected to both ends of the separator 4 are inserted into the holes formed in the permanent mold material 1 to project from the surface of the permanent mold material 1, and the projected shaft feet 3
Connect the home tie 5 to the
By screwing in, the flaps 8, 8 between the pressing member 7 mounted on the home tie 5 and the permanent mold 1 are pressed against the permanent mold 1. In this state, the permanent form material 1
A concrete is placed between the two, and when the concrete is hardened, the home tie 5 and the shaft leg 3 are removed, and a mortar or the like is embedded in the hole through which the shaft leg 3 was inserted to construct a wall body. It is like this.

When the wall is constructed in this manner, concrete bites into the dovetail grooves 9, 9 ... Formed on the back surface of the permanent formwork material 1, that is, the concrete placing surface 1a, and at the same time the concrete and the permanent formwork material 1 are formed. The concrete placing surface 1a is chemically bonded so that the permanent form material 1 and the concrete are integrated. In addition,
A groove 11 and a tenon 12 are formed at each end of the permanent mold material 1, and by fitting the tenon 12 into the groove 11,
The permanent formwork materials 1 are joined to each other in the imitation structure.

[0005]

However, when an external force is repeatedly applied to the wall body constructed in this way by, for example, an earthquake, a strong wind, etc., the chemical bond between the permanent formwork material 1 and the concrete is destroyed. Or, alternatively, Figure 1
As shown in FIG. 2, a crack is generated at the root of the biting part of the concrete K biting into the dovetail groove 9,
There was a risk that the permanent form material 1 would fall off from the concrete K. Moreover, even if the mortar is filled in the hole through which the shaft foot 3 is inserted, the hole cannot be completely sealed,
Therefore, there is a problem that rainwater enters through the holes and the separator 4 embedded in the concrete K is corroded. Further, the rust-containing water of the separator 4 flows out to the surface side of the permanent mold material 1, and the permanent mold material 1
There was a risk that the surface of the product would be dirty and the appearance would be significantly impaired.

The present invention has been made in view of the above circumstances, and provides a fastening structure and a fastening method for a permanent form material which is surely integrated with concrete and is free from the risk of falling off. It is an object.

[0007]

In order to achieve the above object, the fastening structure for a permanent form material according to claim 1 is supported by a separator with a gap, and concrete is poured into this gap. According to the present invention, there is provided a fixing structure for a permanent formwork material which is integrated with concrete to construct a concrete structure, wherein fixing holes penetrating to the front and back are formed in the permanent formwork material. The part is inserted, and the fixing hole is filled with an adhesive. In addition, the fastening structure for a permanent form material according to claim 2 is supported by a separator with a gap therebetween, and by placing concrete in the gap, the concrete is integrated with the concrete to construct a concrete structure. In the fastening structure of the formwork material, the permanent formwork material is formed with fixing holes penetrating to the front and back sides, and the fixing hole has an end portion of the separator inserted therein, and the separator has A male screw is formed at the end,
A cap having an internal thread capable of being screwed into the external thread and having a diameter smaller than that of the fixing hole is screwed into the fixing hole. By doing so, a step portion or a countersunk step portion is formed, and a cap screwed into the end portion of the separator is engaged with the step portion.

Further, in the structure for fastening a permanent form material according to claim 3, the separator is supported by a separator with a gap, and by casting concrete into this gap, the concrete structure is integrated with the concrete to form a concrete structure. A structure for fastening a permanent mold material to be constructed, wherein the permanent mold material is provided with fixing holes penetrating the front and back sides, and the fixing hole has an end portion of the separator inserted therein. Has a male thread formed at its end,
A cap having an internal thread that can be screwed into the male thread and having a smaller diameter than the fixing hole is screwed in, and the cap has a jaw or a dish formed on its head,
A step portion or a countersunk step portion is formed on the front surface side of the fixing hole, and a jaw portion or a dish portion formed on the head portion of the cap is engaged with the step portion. I am trying.

According to a fourth aspect of the present invention, there is provided a permanent mold material fastening structure according to the first aspect, wherein the fixing hole has an annular groove portion formed on an inner surface thereof. It is characterized by that. Furthermore, the fastening structure of the permanent formwork material according to claim 5 is the fastening structure of the permanent formwork material according to claim 1 or 4, wherein the diameter is slightly smaller than the fixing hole in the fixing hole. The cap is fixed to the end of the separator.

According to a sixth aspect of the present invention, there is provided a permanent form material fastening method, wherein the end portion of the separator having a washer fixed near the end portion is
Fixing holes penetrating the front and back of the permanent formwork material, inserted from the back side, positioned by the washer of the separator, concrete is placed on the backside of the permanent formwork material positioned by the separator, the concrete After the hardening and curing of (1), the fixing hole is filled with an adhesive material. Further, the method for fastening a permanent form material according to claim 7 is the method for fastening a permanent form material according to claim 6, wherein the fixing hole is filled with an adhesive and then the separator is filled with the adhesive. It is characterized in that a cap having a diameter slightly smaller than the fixing hole is fixed to the end portion.

[0011]

Further, according to the fastening structure of the permanent formwork material according to claim 1, since the separator embedded in the concrete is integrated with the permanent formwork material by the adhesive material filled in the fixing holes, Through the separator, the reliable joining state between the concrete and the permanent form material is maintained. Further, the fixing hole is closed by the adhesive, and good sealing property in this fixing hole is secured. According to the fastening structure of the permanent formwork material according to claim 2, when the cap is screwed into the end of the separator, the cap engages with the step of the fixing hole,
A reliable fastening state of the permanent form material can be obtained.

Further, according to the fastening structure for a permanent form material according to claim 3, when the cap is screwed into the end portion of the separator, the jaw portion or the dish portion of the cap engages with the step portion of the fixing hole, A reliable fastening state of the permanent form material can be obtained. Further, according to the fastening structure of the permanent formwork material according to claim 4, the bonding state between the concrete and the permanent formwork material via the separator is caused by the adhesive material filled in the fixing holes entering the annular groove portion. It is further improved. Further, according to the fastening structure of the permanent formwork material according to claim 5, the cap fixed to the end portion of the separator is fixed by the adhesive material, and the joining state between the concrete and the permanent formwork material via the separator is further improved. Be improved.

According to the method of fastening a permanent form material according to claim 6, the permanent form material and the separator embedded in the concrete are securely joined by the adhesive material, and the secure fastening to the concrete is ensured. Done. In addition, claim 7
According to the method for fastening the permanent formwork material described above, the cap is fixed to the permanent formwork material with the adhesive, and the permanent formwork material is securely fastened to the concrete.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the fastening structure and fastening method for a permanent form material of the present invention will be described below with reference to the drawings. In addition,
The same reference numerals are given to the same structural parts as those of the above-mentioned conventional example, and the description thereof will be omitted. As shown in FIGS. 1 to 3, the permanent formwork material 1 of this embodiment is provided with a plurality of fixing holes 21 penetrating through the front and back thereof.
The end of is inserted. A washer 22 is provided near the end of the separator 4, and the washer 22 positions the permanent mold material 1.

Further, a cap 23 fixed to the end portion of the separator 4 is provided in the fixing hole 21 of the permanent mold material 1. The cap 23 is formed to have a diameter slightly smaller than that of the fixing hole 21 and has a female screw 24 formed at the center thereof. The female screw 24 is connected to a male screw 25 formed at the end of the separator 4. It is attached to the separator 4 by inserting a screwdriver or the like into the fitting groove 26 formed in the portion while screwing it in. Further, the fixing hole 21 is filled with an adhesive 27, and the cap 23 and the separator 4 are integrally fixed to the permanent mold material 1 by the adhesive 27.

When fastening the permanent formwork material 1 as described above, as shown in FIG. 4, the end portions of the separator 4 are inserted into the respective fixing holes 21 formed in the permanent formwork material 1, The home tie 5 is screwed into the end portion of the separator 4, and the nut 6 is screwed into the home tie 5 via the pressing member 7, so that the pressing member 7 presses the flaps 8 and 8 against the permanent form material 1. By doing so, the washer 22 of the separator 4 causes the concrete placing surface 1 of the permanent formwork 1 to be placed.
It is brought into contact with a and positioned. Then, in this state, concrete K is cast on the concrete casting surface 1a side of the permanent formwork 1 to cure and cure, and the home tie 5 connected to the end of the separator 4 is removed.

In this way, the cast concrete K and the concrete placing surface 1a of the permanent form material 1 are chemically bonded, and at the same time, the concrete placing surface 1a of the permanent form material 1 is formed. The concrete K bites into the dovetail grooves 9, 9 ... And the concrete K and the permanent frame material 1 are integrated. Further, the fixing material 21 is filled in the fixing hole 21 of the permanent mold material 1, and before the adhesive material 27 is cured, the cap 23 is attached to the separator 4
It is placed in the fixing hole 21 by being screwed into the end portion of. By doing so, the adhesive material 27 filled in the fixing hole 21 is compressed by the cap 23 and is filled in the fixing hole 21 without any gap, and the gap between the fixing hole 21 and the cap 23 is formed. Also, the adhesive material 27 has entered.

Then, when the adhesive 27 is cured, the end of the cap 23 and the separator 4 is securely fixed to the permanent formwork 1 by the adhesive 27, so that the fixing is completed. In the hole 21, the permanent form material 1 is securely fastened to the concrete K via the separator 4.

As described above, according to the fastening structure and fastening method of the permanent form material 1 of the above embodiment, the separator 4
Since the adhesive 27 is filled in the fixing hole 21 through which the end portion is inserted, the permanent formwork material 1 can be securely fastened to the concrete K via the separator 4.
As a result, the joint strength between the permanent formwork 1 and the concrete K can be significantly improved, and, for example, an earthquake,
Even if an external force is repeatedly applied to the wall body due to strong wind or the like, it is possible to maintain the reliable joined state between the permanent form material 1 and the concrete K. That is, it is possible to prevent the separation of the chemically bonded portion between the permanent form material 1 and the concrete K and the generation of cracks at the root portion of the concrete K that bites into the dovetail grooves 9, 9 ... Of the permanent form material 1. Therefore, the permanent form material 1 can be reliably prevented from falling off from the concrete K.

Further, the adhesive 27 filled in the fixing hole 21 can ensure a good sealing property at the fastening portion in the fixing hole 21, and prevents the separator 4 and the like from corroding due to intrusion of rainwater or the like. It can be surely prevented, and it is possible to prevent adhesion of dirt due to water that contains rust due to corrosion of the separator 4 and flows down the surface of the permanent mold material 1, and it is possible to maintain a good appearance. . Further, by fixing the cap 23 to the end of the separator 4 in the fixing hole 21, it is possible to further improve the adhesion state between the separator 4 and the permanent mold material 1 by the adhesive 27, and The fastening force of the permanent formwork material 1 to the concrete K can be further improved. Further, since the fixing hole 21 is closed by the cap 23, it is possible to secure a good appearance of the wall body to which the permanent form material 1 is fixed.

Next, another embodiment will be described. Figure 5
The one shown in FIG. 2 is an annular groove 31 on the inner peripheral surface side of the fixing hole 21.
When the annular groove portion 31 is formed in this way, the adhesive material 27 filled in the fixing hole 21 enters the annular groove portion 31, whereby the separator 4 and the permanent mold material 1 are The bonding strength of can be further improved.

In FIG. 6, a step 32 is formed on the inner surface side of the fixing hole 21 by forming the concrete placing surface 1a side of the inner peripheral surface side of the fixing hole 21 to have a small diameter. is there. Then, when the step portion 32 is formed in this way, the cap 23 is engaged with the step portion 32 in the fixing hole 21 by screwing the cap 23 into the end portion of the separator 4, whereby the permanent form material 1 Are pressed against concrete K. That is, the permanent form material 1 can be mechanically fixed to the concrete K, and the permanent form material 1 can be surely fixed together with the adhesive force of the adhesive 27. Even when the fastening structure shown in FIGS. 5 and 6 is obtained, as shown in FIGS. 7 and 8, the separator 4 is used.
The home tie 5 is joined to the end of the tie, the nut 6 is screwed into the home tie 5, and the flutter material 8, 8
Is pressed against the permanent form material 1, the permanent form material 1 is positioned, and concrete K is placed on the concrete placing surface 1a side.

Further, in the structure shown in FIG. 8, a countersink portion 41 is formed on the surface side of the fixing hole 21, and a countersink portion 42 is formed on the head.
The cap 43 having the is used. That is, by screwing the cap 43 into the end portion of the separator 4, the dish portion 42 of the cap 43 becomes the dish hole portion 41 of the fixing hole 21.
To the concrete K
Is pushed to. That is, also in this case, the permanent form material 1
Can be mechanically fixed to the concrete K, and the permanent form material 1 can be reliably fixed together with the adhesive force of the adhesive 27. Further, since the fixing hole 21 is completely closed by the dish portion 42 of the cap 43, the fixing hole 2
1, the sealability can be further improved, and as shown in FIG. 9, the appearance of the wall body can be further improved. In addition, although the inorganic extruded molded plate is used as the permanent mold material 1 in the above-mentioned embodiment, the permanent molded material is not limited to the inorganic extruded molded plate, and for example,
Precast concrete boards can also be used. Further, it is also possible to use an inorganic extrusion-molded plate in which a plurality of through holes are formed at intervals in the width direction in the longitudinal direction to reduce the weight, and thus, an inorganic extruded plate having a plurality of through holes is used. By using the molded plate, the construction work can be facilitated and the construction can be excellent in heat insulation.

[0024]

As described above, according to the fastening structure and fastening method of the permanent form material of the present invention, the following effects can be obtained. According to the fastening structure of the permanent formwork material according to claim 1, since the separator embedded in the concrete is integrated with the permanent formwork material by the adhesive material filled in the fixing holes, the concrete is interposed via the separator. It is possible to maintain a reliable joining state between the and the permanent form material. Thereby, it is possible to significantly improve the joint strength between the permanent formwork material and the concrete, for example,
Even if an external force repeatedly acts on the wall body due to an earthquake, a strong wind, or the like, it is possible to maintain the reliable joining state between the permanent form material and the concrete.

That is, peeling at the chemically bonded portion between the permanent form material and concrete or at the root of the part that bites into the dovetail when the dovetail groove is formed in the permanent formwork material and the concrete is bited to join It is possible to prevent the occurrence of cracks, and it is possible to reliably prevent the permanent form material from falling off from the concrete. Further, the adhesive material filled in the fixing hole can ensure good sealing property at the fastening portion in the fixing hole, and can reliably prevent the corrosion of the separator or the like due to the intrusion of rainwater or the like. As a result, it is possible to prevent the attachment of dirt due to the corrosion of the separator and the water containing rust flowing down on the surface of the permanent form material, and it is possible to maintain a good appearance.

According to the fastening structure for a permanent form material according to claim 2, since the cap screwed into the end of the separator is engaged with the stepped portion of the fixing hole, the permanent formwork and the concrete are fixed through the separator. It is possible to maintain a reliable joined state with the mold material. Further, since the fixing hole is closed by the cap, it is possible to secure a good appearance of the wall body to which the permanent formwork material is fixed. According to the fastening structure of the permanent formwork material according to claim 3, since the jaw portion or the dish portion of the cap screwed into the end portion of the separator is engaged with the stepped portion of the fixing hole, It is possible to maintain a reliable joint between the concrete and the permanent form material. Further, since the fixing hole is closed by the cap, it is possible to secure a good appearance of the wall body to which the permanent formwork material is fixed.

According to the fourth aspect of the present invention, the adhesive material filled in the fixing holes enters the annular groove, so that the concrete and the permanent frame material are joined together via the separator. It can be further improved. According to the fastening structure of the permanent formwork material according to claim 5, by fixing the cap to the end portion of the separator in the fixing hole, the adhesive state between the separator and the permanent formwork material is further improved. It is possible to improve, and thereby, the fastening force to the permanent form material for concrete can be further improved. Further, since the fixing hole is closed by the cap, it is possible to secure a good appearance of the wall body to which the permanent formwork material is fixed.

According to the method of fastening a permanent formwork material according to claim 6, the permanent formwork material is fixed to the concrete in a state where the permanent formwork material and the separator embedded in the concrete are securely joined by an adhesive material. Can be fastened. According to the method of fastening a permanent formwork material according to claim 7, the cap fixed to the end of the separator can be fixed to the permanent formwork material by an adhesive, whereby a separator embedded in concrete and The permanent formwork material can be fastened to the concrete in a state in which the joining is further improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a part of a wall body for explaining a fastening structure of a permanent form material according to an embodiment of the present invention.

FIG. 2 is a front view of a part of the wall body for explaining the fastening structure of the permanent formwork material according to the embodiment of the present invention.

FIG. 3 is a front view of the wall body for explaining the fastening structure of the permanent formwork material according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of a permanent mold form material for explaining a fastening method for the permanent mold form material according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view of a part of a wall body for explaining another fastening structure of the permanent mold form material of the embodiment of the present invention.

FIG. 6 is a cross-sectional view of a part of the wall body for explaining another fastening structure of the permanent mold form material of the embodiment of the present invention.

FIG. 7 is a cross-sectional view of a permanent mold form material for explaining a fastening method for the permanent mold form material according to the embodiment of the present invention.

FIG. 8 is a cross-sectional view of a permanent mold form material for explaining a method of fastening the permanent mold form material according to the embodiment of the present invention.

FIG. 9 is a cross-sectional view of a part of a wall body for explaining another fastening structure of the permanent mold form material according to the embodiment of the present invention.

FIG. 10 is a front view of a part of the wall body for explaining another fastening structure of the permanent mold form material of the embodiment of the present invention.

FIG. 11 is a cross-sectional view of a permanent mold form material for explaining a conventional fastening method for the permanent mold form material.

FIG. 12 is a partial cross-sectional view of a wall body constructed by using a permanent form material.

[Explanation of symbols]

 1 Permanent formwork material 4 Separator 21 Fixing hole 22 Washer 23 Cap 24 Female thread 25 Male thread 27 Adhesive material 31 Groove section 32 Step section 41 Countersink section 42 Plate section K Concrete

Claims (7)

[Claims] 1. A fastening structure for a permanent formwork material, which is supported by a separator with a gap, and concrete is cast into the gap to be integrated with the concrete to construct a concrete structure, wherein: Fixing holes for permanent mold material, characterized in that fixing holes penetrating to the front and back are formed in the permanent mold material, the ends of the separator are inserted into the fixing holes, and the fixing holes are filled with an adhesive material. Attachment structure. 2. A fastening structure for a permanent form material, which is supported by a separator with a gap, and concrete is poured into the gap to be integrated with concrete to construct a concrete structure, wherein: In the permanent form material, fixing holes penetrating the front and back are formed, and the fixing holes are inserted with the ends of the separator,
A male screw is formed at an end of the separator, and a cap having a female screw capable of being screwed into the male screw and having a smaller diameter than the fixing hole is screwed into the separator. A step portion or a countersunk step portion is formed in the fixing hole by reducing a part of the back surface side on which concrete is poured, and the step portion has a cap screwed into the end portion of the separator. A structure for fastening a permanent form material, characterized in that: 3. A fastening structure for a permanent form material, which is supported by a separator with a gap, and concrete is poured into the gap to be integrated with concrete to construct a concrete structure, wherein: In the permanent form material, fixing holes penetrating the front and back are formed, and the fixing holes are inserted with the ends of the separator,
A male screw is formed at an end of the separator, and a cap having a female screw capable of being screwed into the male screw and having a smaller diameter than the fixing hole is screwed into the separator. The cap is provided with a jaw or a dish on its head, and the fixing hole is provided with a step or a countersink-like step on the surface side, and the step has a step on the head of the cap. A fastening structure for a permanent form material, characterized in that the formed jaw or dish is engaged. 4. The permanent formwork material fastening structure according to claim 1, wherein an annular groove is formed on the inner surface of the fixing hole. 5. The permanent mold according to claim 1, wherein a cap having a diameter slightly smaller than that of the fixing hole is fixed to an end portion of the separator in the fixing hole. Frame material fastening structure. 6. An end of a separator having a washer fixed near the end is inserted into a fixing hole penetrating the front and back of the permanent formwork member from the back surface side and positioned by the washer of the separator. A method for fastening a permanent form material, comprising placing concrete on the back surface side of the permanent form material positioned by the method, and filling the fixing hole with an adhesive after hardening and curing the concrete. 7. The cap having a diameter slightly smaller than that of the fixing hole is fixed to the end of the separator at the fixing hole after filling the fixing hole with an adhesive material. The method of fastening the permanent formwork described.