JP2001193255A - Wall locking auxiliary device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wall locking auxiliary device having the high effect of wall peeling prevention for wet walling such as mortar, plaster, organic adhesive, caulking material or the like. SOLUTION: A connector member fixed to a spacer bolt set inside of a form and connected to a form clamping bolt and a locking member fixed to the connector member are used to form a sheathing dike section in the end face on the form side in the connector member, and the locking section higher than the sheathing dike section in formed in the locking member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall locking aid which can be suitably used for preventing a wet wall material such as mortar, plaster, an organic adhesive or a caulking material applied to the surface of a concrete body or the like from falling off. .

[0002]

2. Description of the Related Art Concrete pillars and walls are two
Using a formwork that is held at regular intervals by interposing a plurality of spacer bolts between two sheet materials, placing concrete between the formwork at regular intervals, and removing the formwork after the concrete has hardened It is to be built by. In addition, the surface of the skeleton concrete after removing the formwork has a bad appearance as it is, so as a surface finish, apply mortar etc. so as to have a certain thickness, or further attach tiles etc. on it Generally done.

However, the mortar applied later is separated from the skeleton concrete due to expansion, shrinkage, warpage, etc. due to changes in temperature and humidity, and freezing of water that has entered between the mortar and the mortar. ,
In some cases, there was a problem that the film was peeled off.

[0004] For example, the applicant of the present invention has disclosed in Japanese Patent Application No. 10-212342 a trace of removal of a connector (so-called cone trace) for connecting between a spacer bolt in a concrete formwork and a formwork tightening bolt. ), An invention was proposed in which an excellent adhesion preventing effect was obtained by embedding an adhesive aid designed in a special structure into the cone mark. However, this method has a problem that the removed connector becomes a waste material after several uses, which leads to an increase in industrial waste.

Therefore, the present inventors have disclosed in Japanese Patent Application No.
In the application of Japanese Patent No. 339887, an invention of a connector / bonding auxiliary tool in which the connector and the bonding auxiliary tool are integrated is proposed.

However, in this method, although the connector is not discarded, since the bonding aid is disposed in the mold in advance, the locking portion having the highest locking strength with the mortar is inevitably provided. Since the mortar is located deeper than the surface of the concrete body, it is difficult for the mortar to reach the locking portion, and the locking strength is not sufficient. Furthermore, in order to enhance the effect of preventing the exfoliation, the number of spacer bolts must be increased, which leads to an increase in cost and a decrease in work efficiency.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a wall locking auxiliary tool having a high effect of preventing the wall from peeling off.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a connector member fixed to a spacer bolt disposed in a mold and connected to a mold tightening bolt, and A locking member fixed to the member, wherein the connector member has a dam portion formed on the end face on the formwork side, and the locking member has a locking portion higher than the dam portion. Features assistive devices.

Here, it is preferable that the connector member has a screw hole screwed into the spacer bolt and the form clamping bolt, and it is also preferable that the locking auxiliary member is fixed to the locking member. .

[0010] It is also preferable that the connector member and / or the locking member include 6-nylon or polyphenylene sulfide.

Further, it is preferable that the locking portion has a loop shape, an arc shape, an L shape, a T shape, a mushroom shape or a rod shape.

Further, a connector member having a dam portion formed on the end face on the formwork side is fixed to a spacer bolt arranged in the formwork, concrete is poured into the formwork, and then the concrete is hardened. Then, after the mold is removed from the mold, the locking member is fixed to the connector member so that the locking portion is higher than the bank, and then a method of manufacturing a concrete structure in which a wet wall material is applied is also preferable. Concrete structures produced by the method are also preferred.

[0013]

FIG. 1 is a schematic longitudinal sectional view of a wall locking aid according to an embodiment of the present invention. In FIG. 1, a wall locking auxiliary tool 8 is a connector member 1 formed of resin.
And a locking member 3. Connector member 1
Is a screw hole 1s for screwing with a spacer bolt on the end face on the side where concrete is driven out of the both end faces.
Is provided on the opposite end face, that is, the end face on the formwork side,
A screw hole 1m is provided for screwing the form clamping bolt and screwing and fixing the locking member 3. These two screw holes 1s and 1m are provided coaxially with the partition wall 6 interposed therebetween.

A locking member 3 provided with a plurality of locking portions 5 is fixed to an end face of the connector member 1 on the form side, and is provided on an outer peripheral edge of the connector member 1 so as to surround all of the locking portions. A bank 2 is provided along. The locking portion 5 has a loop shape, is arranged in a row and protrudes, and the concave groove 4 is formed so as to intersect these row directions. In addition, locking member 1
Are fixed so that the locking portion 5 is higher than the bank 2.

FIG. 2 shows the wall locking aid of FIG.
FIG. 4 is a schematic plan view when viewed from the side where is provided.

In the wall locking aid 8 shown in FIG. 1, the locking portion 5 provided on the locking member 3 serves as an anchor for a wet wall material such as mortar, thereby generating a locking effect. Means. In addition, when the connector member 1 of the wall locking auxiliary tool 8 is used as a connector,
In addition to acting as a support for receiving the tightening pressure of the concrete formwork, it avoids the problem that uncured concrete flows in from the surroundings when concrete is poured and the formwork tightening bolts are fixed to the connector member and cannot be removed. Play a role. In addition, since the locking member 3 is fixed so that the locking portion 5 is higher than the bank 2, a wet wall material such as mortar is easily entangled with the locking portion 5, and an excellent locking effect is obtained. Demonstrate.

FIGS. 3 to 5 show, in the order of steps, the case where the wall anchoring aid of the present invention is used as a connector for a concrete formwork and then used as a wall anchoring aid when applying mortar to a concrete surface of a skeleton. It is shown.

First, FIG. 3 is a schematic sectional view showing a state in which the connector member 1 is used as a connector for the spacer bolt 11 and the form clamping bolt 16 in assembling the concrete form. For each spacer bolt, a screw hole 1s of the connector member 1 is screwed into an end of the spacer bolt 11, and a form tightening bolt 16 is inserted into the opposite screw hole 1m.
Are screwed into each other to bring both bolts 11 and 16 into a connected state. Next, the concrete formwork 12 is passed through the formwork tightening bolts 16, and a pair of pressing members 13 and a foam tie 14 are superimposed on the outside of the formwork 12. Finally, the nut 15 is attached to the end of the formwork tightening bolts 16. Screw together and tighten.

As described above, when the mold 12 is fastened and fixed with the nut 15, the tightening pressure acting on the end face of the connector member 1 from the mold 12 may be 200 kg / cm ² or more. A dam portion 2 is provided on an end face of the damper 1. The dam portion 2 supports the clamping pressure of the formwork 12,
The space for accommodating the locking member is not crushed.

After the assembling of the formwork 12 is completed, concrete is poured into the casting space in the formwork. When the concrete is filled in the casting space, the uncured concrete is filled up to the end face of the connector member 1 on the form side. At this time, since the bank 2 is formed along the outer peripheral edge, unhardened concrete flows into the bank 2 and covers the space for accommodating the locking member, or the screw hole 1 m It does not get inside.

When the poured concrete has hardened and the skeleton concrete 10 has been formed, the mold is removed. Removal work is performed with nut 15, foam tie (registered trademark) 14,
The pressing member 13 and the mold 12 are sequentially removed, and finally, the mold tightening bolt 16 is rotated and removed.

In this removing operation, the connector member 1 is connected to the spacer bolt 11 and does not come off, and is left in a state of being connected to the spacer bolt 11 as shown in FIG.

After the mold is released from the state shown in FIG. 4, the locking member 3 is screwed and fixed to the connector member 1 as shown in FIG. 5, and then the mortar 20 is applied to the surface of the concrete body 10. . The state shown in FIG. 5 is obtained by applying the mortar, and the mortar 20 is locked by the locking action of the locking portion 5 and is hardly peeled off. In this example, the locking effect of the wet wall material is further enhanced by interposing the locking auxiliary member 7 made of a resin net between the connector member 1 and the locking member 3. This locking assisting member will be described later.

In the above description, an example has been described in which the screw holes 1s and 1m provided in the connector member 1 are formed with the partition wall 6 interposed therebetween. However, the partition wall 6 is not necessarily required, and even if both screw holes communicate with each other. Good. The communication facilitates the formation of the screw holes, and can reduce the cost.
On the other hand, when the partition wall 6 exists, the spacer bolt 11
And one of the formwork tightening bolts 16 penetrates into the other screw hole, shortens the screw hole length of the other bolt,
Further, the problem that it is difficult to set the fixing position of the connector member 1 to the spacer bolt 11 can be solved.

The cross-sectional shape of the connector member may be a polygon, such as a triangle or a quadrangle, a flower, a star, or the like, in addition to a circle, or may be a shape having a protrusion around the periphery. By adopting a shape other than these circles, it is possible to prevent the connector member from rotating around when removing the form clamping bolt 16 from the connector member.

Regarding the cross-sectional area of the connector member, the cross-sectional area of the portion buried in the skeleton concrete is larger than the cross-sectional area of the end face exposed on the skeleton concrete surface side, that is, the end surface portion on the formwork side. It is preferable that the connector member is formed to be large because the connector member can be securely fixed in the skeleton concrete so as not to come off. The size of the cross-sectional area of the part buried in the skeleton concrete may be larger than the cross-sectional area of the end face part on the formwork side, or part of the buried part may be larger. You can just be

In the above, the example in which the locking member is sized to fit inside the bank formed on the connector member has been described. However, in order to enhance the locking effect, the locking member having a size exceeding the bank is used. May be used. Further, the example in which the screw is formed integrally with the locking member has been described, but the locking member may be fixed to the connector member with a separate screw on the flat locking member.

The shape of the locking portion formed on the locking member is such that it has a rigidity capable of penetrating deeply into the uncured wet wall material and has a breaking strength enough to support the hardened wet wall material. Can have various shapes. In the embodiment described in FIG. 1, the shape of the locking portion 5 is a loop shape, but, for example, a hook shape as shown in FIGS. 8 to 11 or a rod shape as shown in FIG. 12. May be provided. The hook shape includes an arc shape in FIG. 8, an L shape in FIG. 9, a T shape in FIG. 10, a mushroom (sphere) shape in FIG. 11, and the like.

Although the example of the arrangement of the locking portions is an example in which a large number of locking portions are arranged in parallel, for example, as shown in FIG. 13, they may be arranged radially. They may be arranged at random.

The wall-locking assisting device of the present invention exerts a locking effect by the locking portion provided on the locking member. It is preferable to use a locking auxiliary member in combination in order to increase the prevention of the wall from peeling off. This locking assisting member is made of, for example, a resin net and extends beyond the bank, thereby contributing to preventing the wet wall material from falling off. Also, even if cracks occur in the wet wall material, the growth can be suppressed,
It also effectively acts to prevent the wet wall material existing between the wall locking aids from falling off. That is, even if peeling occurs between the skeleton concrete and the wet wall material, it is difficult for the wet wall material to fall because the locking auxiliary member and the wet wall material are locked.

When the locking member is screwed to the connector member, the locking auxiliary member may be fixed by being sandwiched between the two, or may be screwed on the side of the locking member where the locking portion is provided. It can be fixed, or it can be fixed by bonding with an adhesive, welding by heating or pressing, welding by ultrasonic waves, or the like.

The shape of the locking assisting member can take various shapes as long as it enhances the locking effect with the wet wall material. However, it is preferable that the locking auxiliary member be a net, for example, as shown in FIG. What made the resin fiber into a grid-like network structure by Russell knitting can be used. By using the Russell knitting, it is easy to adjust the thickness of the fiber and the lattice spacing, and the degree of freedom in design increases. Further, as shown in FIG. 7, a locking auxiliary member 7 'in which the fibers are triaxially knitted into a triaxial mesh and the mesh is triangular or pentagonal is also preferable. Even with this tricot knitting, the thickness of the fibers and the mesh spacing can be freely designed. Of course, the shape of the mesh may be a tortoiseshell shape, a rhombus shape, an elliptical shape, or the like. Further, in order to further strengthen the adhesive force with the wet wall material, a mesh having a three-dimensional three-dimensional shape, or a fiber provided with fluff is also preferable.
Further, a molded member having a loop shape such as the locking portion 5 may be used.

In the case where the fixing auxiliary member of the mesh body is fixed to the locking member by using a screw, the size of the mesh, that is, the interval between the fibers constituting the mesh, is larger than the screw diameter of the screw used. And it is preferable to have a size smaller than a screw head diameter. The whole may have such a mesh size, or only the portion to be screwed may have such a size. here,
When the locking auxiliary member is sandwiched and fixed between the connector member and the locking member, the diameter of the locking member may be treated as the screw head diameter. In addition, it is preferable that the size of the mesh is in the range of 8 to 15 mm according to the size of the screw which is usually used.

The size of the locking auxiliary member is preferably such that the maximum side is in the range of 5 to 60 cm, more preferably 15 to 30 cm.
Is preferably within the range. If it is less than 5 cm, it becomes difficult to exhibit the locking effect, and the mortar peeling prevention power tends to be reduced. Also, since the mounting pitch of the spacer bolts is usually 60 cm, if the maximum side of the locking auxiliary member exceeds 60 cm, the possibility that the locking auxiliary members will overlap with each other increases, which not only complicates the work. In addition, the filling of the wet wall material in the overlapped portion tends to be insufficient, and the locking effect tends to decrease.

In the case of using the meshing auxiliary member, it is preferable to use a member formed by molding a metal or resin, knitting or weaving the fibers. As resin,
6-nylon, 6,6-nylon, vinylon, polypropylene, aramid, and the like are preferable. Particularly, when 6-nylon and vinylon are used, they are excellent in resistance to alkaline concrete and also excellent in adhesion to concrete. Therefore, it is preferable.

When a fiber is used as the locking auxiliary member, various forms such as spun yarn and filament yarn can be applied.

When the net shape is given by the resin fiber, it is preferable that the entire locking auxiliary member is impregnated with a resin to perform a shaping process. By this processing, it is possible to prevent the shape of the net from being lost, and it is possible to improve the workability without sagging when fixing to the connector member. As the resin to be used, for example, PVA resin, acrylic resin, and melamine resin are preferable.

As the material of the connector member and the locking member,
Any material can be used as long as it is not eroded by concrete or wet wall material and has sufficient strength to hold the wet wall material. For example, metal such as stainless steel or plastic resin can be used. . Among them, a thermoplastic resin that is easily injection-molded, a thermosetting resin that easily obtains high strength, and the like are preferable.

As the thermoplastic resin, 6-nylon, 6,6-nylon, polyphenylene sulfide (PP
S), polyester, polyethylene, polypropylene,
Polystyrene, high impact polystyrene (HIPS), AB
S resin, modified polyphenylene oxide (modified PP
It is preferable to use a resin such as O), a polyamide elastomer, or a polyester elastomer. In particular, PPS which is resistant to concrete which is alkaline, that is, excellent in alkali resistance and strength.
And 6-nylon are preferred.

It is preferable to use a fiber reinforced resin mixed with a short fiber reinforcing fiber such as a glass fiber or a carbon fiber as these resins because the strength is increased. By increasing the strength, the deformation of the locking portion and the like due to the force received from the wet wall material is reduced, and the effect of preventing peeling can be enhanced.

Further, it is not always necessary to mold the entirety of the connector member and the locking member with resin, but by forming only the periphery of the screw hole of the connector member and the screw portion of the locking member with metal, strong tightening can be achieved. Even though the thread is not damaged, the strength can be increased.

It is preferable that the wall locking aid of the present invention is designed so that the locking force on the mortar per piece is 500 N or more. By designing in this manner, the effect of preventing spalling can be further enhanced. In order to set the locking force to 500 N or more, for example, when forming a loop-shaped locking portion, the thickness (diameter) of each loop is in the range of 0.1 to 3 mm, and the loop diameter is 2 to 10 mm. It is preferable to set it in the range of. When hook-shaped locking portions are formed, the thickness (diameter) of each hook is 0.1 to 5 m.
It is preferred to be within the range of m. Further, when forming the rod-shaped locking portion, the thickness (diameter) of each rod is set to 0.
It is preferable that the height be within the range of 1 to 5 mm and the height be within the range of 2 to 10 mm. In addition, this locking force means that mortar (mixing ratio of cement and sand 1: 2.5) is applied to the wall locking auxiliary tool for 10 m.
After applying and curing with a thickness of m, it is pulled by a tensile tester and refers to the load when the locking portion is broken or broken.

When no fiber reinforced resin is used, the number of locking portions provided on one locking member may be 20 to 5
Within the range of 0, 5-30 when using fiber reinforced resin
It is preferable that the number be within the range.

As for the method of manufacturing the connector member, when the above-mentioned thermoplastic resin is used, it is preferable to integrally mold the dam portion by injection molding or the like, but the dam portion is separately molded and bonded to the connector member. It may be welded or joined.

The wall anchoring aid of the present invention is effective for preventing a wet wall material represented by mortar from peeling off, but is also applicable to a wet wall material such as plaster, an organic adhesive, and a caulking material. can do. Further, by using the wall locking aid of the present invention, it is possible to provide a concrete structure such as a pillar, a bridge, a building, or the like, from which a wall such as a wet wall material is unlikely to fall off.

[0046]

The wall-locking assisting device of the present invention is fixed to a spacer bolt disposed in a formwork, and is also fixed to the connector member connected to the form-tightening bolt and the connector member. A locking member, the connector member has a dam portion formed on the end face on the form side, and the locking member has a locking portion higher than the dam portion, so that mortar, plaster, and organic A wet wall material such as an adhesive or a caulking material is firmly locked to the locking portion, and the wall such as the wet wall material is less likely to peel off from the skeleton concrete.

Further, when the connector member has a screw hole to be screwed to the spacer bolt and the frame tightening bolt, the connector member can be quickly fixed to the spacer bolt, and workability can be improved. Is improved. In addition, it is easy to fix the locking member to the connector member by using the screw hole of the form clamping bolt, so that the workability can be improved.

Further, when the locking auxiliary member is fixed to the locking member, the wet-type wall material is firmly locked not only to the above-mentioned locking portion but also to the locking auxiliary member, and the wet-type wall material is removed from the skeleton concrete. Walls are less likely to peel off. Further, even if cracks occur in the walls of these wet wall materials and the like, the growth can be suppressed by the presence of the above-mentioned locking auxiliary members in the wet wall materials, so that the wet wall existing between the connector members can be suppressed. It is also possible to effectively prevent the wall of the material from falling off.

When the connector member and / or the locking member contains 6-nylon or polyphenylene sulfide, these are excellent in alkali resistance, so that the wall locking aid is hardly deteriorated by concrete. Therefore, the locking effect can be maintained for a long time.

Further, when the locking portion has a loop shape, an arc shape, an L shape, a T shape, a mushroom shape or a rod shape, the wet wall material or the like is easily entangled with the locking portion, and As a result, the locking effect can be further enhanced.

Further, a connector member having a bank formed on the end face on the formwork side is fixed to a spacer bolt arranged in the formwork, and concrete is poured into the formwork, and then the concrete is cured. Then, after the mold is released, the locking member is fixed to the connector member so that the locking portion is higher than the dam portion, and then a concrete structure is manufactured by applying a wet wall material. It is possible to obtain a concrete structure such as a pillar, a bridge, or a building, which has an excellent effect of preventing the wall material from peeling off.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional view taken along the line ZZ in FIG. 2, showing a wall locking aid according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the wall locking aid shown in FIG. 1 when viewed from an arrow Y direction.

FIG. 3 is a schematic longitudinal sectional view showing a state in which the connector member of the wall locking aid of FIG. 1 is applied to a mold.

FIG. 4 is a schematic longitudinal sectional view showing a state where a mold is removed from FIG. 3;

5 is a schematic vertical sectional view showing a state in which the locking member is fixed to the connector member from the state of FIG. 4 and mortar is applied.

FIG. 6 is a schematic plan view of a wall locking aid according to another embodiment of the present invention.

FIG. 7 is a schematic plan view of a wall locking aid according to still another embodiment of the present invention.

FIG. 8 is a schematic longitudinal sectional view of a locking member having an arc-shaped locking portion.

FIG. 9 is a schematic longitudinal sectional view of a locking member having an L-shaped locking portion.

FIG. 10 is a schematic longitudinal sectional view of a locking member having a T-shaped locking portion.

FIG. 11 is a schematic longitudinal sectional view of a locking member having a mushroom-shaped locking portion.

FIG. 12 is a schematic longitudinal sectional view of a locking member having a rod-shaped locking portion.

FIG. 13 is a schematic plan view showing a state in which locking portions of a locking member are radially arranged.

[Explanation of symbols]

 1: Connector member 2: Dam section 3: Locking member 3 ': Locking member 4: Depressed groove 5: Locking portion 5': Locking portion 6: Partition wall 7: Locking auxiliary member 7 ': Locking auxiliary Member 8: Wall locking assisting tool 10: Structural concrete 11: Spacer bolt 12: Formwork 13: Pressing member 14: Form tie 15: Nut 16: Formwork tightening bolt 20: Mortar (wet wall material) 31: Locking Member 32: Locking member 33: Locking member 34: Locking member 35: Locking member 51: Locking portion 52: Locking portion 53: Locking portion 54: Locking portion 55: Locking portion

Claims (7)

[Claims] 1. A connector member fixed to a spacer bolt arranged in a formwork and connected to a formwork tightening bolt, and a locking member fixed to the connector member. A wall-locking assisting tool having a bank formed on an end surface on the formwork side, wherein the locking member has a locking portion higher than the bank. 2. The wall locking aid according to claim 1, wherein the connector member has a screw hole screwed into the spacer bolt and the form clamping bolt. 3. The wall locking aid according to claim 1, wherein the locking auxiliary member is fixed to the locking member. 4. The wall locking aid according to claim 1, wherein the connector member and / or the locking member include 6-nylon or polyphenylene sulfide. 5. The locking portion has a loop shape, an arc shape, an L shape, and a T shape.
It is in the shape of a letter, a mushroom or a rod.
5. The wall locking aid according to any one of 4. 6. A spacer bolt disposed in a mold,
A connector member having a bank formed on the end face on the formwork side is fixed, concrete is poured into the formwork, the concrete is hardened, and then the formwork is removed, and then the locking member is locked. A method for manufacturing a concrete structure, comprising: fixing a connector to a connector member so that the portion is higher than a bank; and then applying a wet wall material. 7. A concrete structure manufactured by the manufacturing method according to claim 6.