JP3187828U - Batter for concrete formwork - Google Patents

Abstract

An object of the present invention is to provide a butter material for a concrete formwork that is easy to use and has a low initial introduction cost.
A butter material 1 is disposed on an outer surface of a concrete mold 10 and pressed against the concrete mold 10 by a butter material fastener 20 for tightening the concrete mold 10. The part of the butterfly material 1 that contacts the butterfly material fastener 20 is made of a wood material.
[Selection] Figure 2

Description

  The present invention relates to a butter material for concrete formwork.

As this type of conventional technology, for example, there is a concrete formwork butter material shown in the following patent document (see FIG. 3).
This butter material 100 is an iron butter material formed by bending and raising both side edges 101 of a long steel plate in the same direction. Is formed.

  In addition, a method for constructing a concrete structure using the butter material 100 will be described. After the butter material is disposed on the outer surface of the inner mold frame and the outer mold frame composed of barrier plates, etc., each of the butter materials is inserted. Insert the separator into the hole and assemble the nut. Subsequently, the nut is tightened, and the formwork is tightened from the outside via the butter material. And concrete is poured in a formwork, vibrating with a concrete vibrator.

JP 2003-239539 A

  By the way, since the above-mentioned iron butter material is made of iron, the vibration of the concrete vibrator is easily transmitted directly, and the nut of the separator is loosened or the butter material is displaced during the placing process. In addition, because it was difficult to cut and perform additional work on site, it was necessary to get used to using iron butter material.

  In addition, the iron butter material is advantageous in terms of cost because it can be used for a long period of time, but the initial introduction cost is high, and the merit of the one-off site is not high, and it is expensive.

  The present invention has been made in consideration of such a technical background, and it is an object of the present invention to provide a butter material that is easy to use and has low initial introduction cost.

In order to solve the above problems, the present invention
Butter material that is disposed on the outer surface of the concrete mold and pressed against the concrete mold by a butter material fastener that fastens the concrete mold, and a portion that contacts the butter material fastener is a wooden material It is characterized by comprising.

  According to the concrete form butter material of the present invention configured as described above, since the portion in contact with the butter material fastener is formed of a wood material, the looseness of the butter material fastener and the deviation of the butter material are assured. It is possible to absorb the vibration at the time of placing concrete, which is a cause of That is, the vibration transmitted from the butter material to the butter material fastener is reduced at the contact portion between the butter material and the butter material fastener, so that the slack of the butter material fastener is suppressed. Further, the displacement of the butter material is reduced by eliminating the looseness of the butter material fastener.

  In the present invention, the wood material is a wood material rich in vibration damping function compared to metal or resin, and it is not only a single wood but also a synthetic wood that is a mixture of wood powder and resin (binder). A new material called a so-called woody composite material may be applied.

Moreover, all the site | parts may be formed with the wooden material.
In this configuration, since all the parts of the butter material are formed of a wood material, the whole of the butter material can absorb vibration at the time of placing concrete. In addition, since the butter material is formed of a wood material that can be easily processed, it can be cut and added on site according to the shape of the mold, and can be added as necessary. Also, the butter material can be manufactured at a lower cost than metal.

Moreover, the structure which the part which consists of said wooden material has a square cross section, and the chamfering process is given to the corner | angular part may be sufficient.
In this configuration, since the surfaces are formed at the four corners of the butter material, it is possible to prevent the crack and cracking of the butter material for a long period of time.

  Moreover, the structure by which timber is used for the site | part consisting of the said wooden material may be sufficient.

  Moreover, you may use a core holding material for the site | part comprised with the said timber.

  Furthermore, it is good to use a thinning material for the site | part comprised with the said timber.

  In these structures, since the site | part which consists of a wooden material is formed with cheap timber, the price of a butter material can be restrained low. Moreover, the strength and durability of the butter material can be improved by using a core support material that is strong against strength and deformation. Moreover, by using thinned wood, resources can be reused and it can also contribute to the environment.

  As described above, according to the present invention, it is possible to provide a butter material that is easy to use and has a low initial introduction cost.

The perspective view of the butterfly material shown in this Embodiment. The perspective view which shows the usage example of the butterfly material shown to this Embodiment. The figure which shows the conventional butterfly material for concrete formwork.

Hereinafter, the butter material of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the butter material 1 shown in the present embodiment is formed of a small-diameter wooden material (core holding material) such as cypress, for example. Specifically, a small-diameter wooden material is cut into a prismatic shape with a scaring saw, and planar processing (planing) is performed on the four surfaces 1a. In addition, the corner material 1b is chamfered (rounded) to obtain the butter material 1.
Also, the butter material 1 is prepared in a plurality of types in a range of 3 to 4 m in length and 50 to 90 mm in one side, and is used for construction while cutting into an optimum length at a construction site.

  FIG. 2 is an example in which the butter material 1 shown in the present embodiment is applied to the construction of the mold 10. As shown in FIG. 2, the butter material 1 is disposed on the outer surface of the weir plate 10 a constituting the mold 10, and is composed of various members such as a separator, foam tie (registered trademark), and a backing plate. The fastener 20 is assembled to the mold 10.

Hereinafter, the method of assembling the butter material 1 will be described with reference to FIG.
The butter material 1 is composed of a vertical butter material 2 extending in the vertical direction of the mold 10 and a horizontal butter material 3 that intersects the vertical butter 2 and extends in the horizontal direction of the mold 10. Moreover, in this Embodiment, the two horizontal butter materials 3 are provided with respect to the vertical butter material 2, and the formwork 10 is pressed down by these vertical butter materials 2, and the horizontal butter materials 3 and 3. FIG. FIG. 2 shows an example of construction on the outer mold side.

On the other hand, the separator 21 as a constituent member of the butterfly material fastener 20 is disposed between an inner mold provided inside the concrete structure and an outer mold provided outside the concrete structure, and both end portions thereof. Is screwed into a substantially conical cone 22 having a female screw thread inside, and is in contact with each mold via the cone 22.
Further, in each mold 10, a through-hole for connecting a foam tie (registered trademark) 23 to the cone 22 is formed in the attachment portion of the cone 22, and the foam tie (registered trademark) 23 having an external thread at one end is It is screwed to the cone 22 in the mold 10 through the through hole.

  Subsequently, the horizontal flaps 3 and 3 are disposed so as to sandwich the form tie (registered trademark) 23 from above and below, and the contact plate 24 is placed along the horizontal flaps 3 and 3 from the outside of the mold. In this state, the wedge 25 is driven into the projecting portion 23 a of the foam tie (registered trademark) 23, and the mold 10 is tightened.

  The backing plate 24 is disposed so as to be spanned between the two horizontal flap members 3 and 3. A long hole 23b for inserting the wedge 25 is formed in the projecting portion 23a of the foam tie (registered trademark) 23, and the wedge plate 25 is driven into the long hole 23b. Move to side 3. In addition, the horizontal butterfly members 3 and 3 and the vertical butterfly member 2 are strongly pressed against the mold 10 (dam plate 10a) by the movement of the contact plate 24, and the clamping of the mold 10 is completed.

  That is, in order to cope with the side pressure of the concrete placed in the mold 10, the butter material 1 is applied to the outer surface of the mold 10, and the butter material 1 is strongly pressed against the mold 10 by the butter material fastener 20. The mold 10 is prevented from opening.

  In addition, after assembling the butter material 1 to the mold 10 as described above, the concrete is placed densely while applying vibrations with a vibrator. At that time, the vibration of the vibrator becomes a factor of slack in the butterfly material fastener 20 as shown in the background art described above, but in this embodiment, the butterwood material 1 is made of wood (woody material) such as cypress. Since it forms, the vibration of a vibrator is absorbed by the butterfly material 1, and the looseness of the butterfly material fastener 20 is suppressed.

  That is, the vibration transmitted from the butter material 1 to the butter material fastening tool 20 at the contact portion between the butter material 1 and the butter material fastening tool 20 is reduced, so that the slack of the butter material fastening tool 20 is eliminated. Further, the displacement of the butter material 1 can be avoided by eliminating the slack of the butter material fastener 20.

  Further, in the present embodiment, since the butter material 1 is configured using inexpensive wood, the introduction cost is low, and further, cutting and additional processing can be easily performed in accordance with various shapes of the mold 10, so that The usability is also good.

The above-described embodiment is merely an example, and the shape and configuration of each part can be changed without departing from the scope of the utility model claims.
For example, in the above-described embodiment, all the parts of the butter material 1 are formed of the wood material, but the wood material may be used only for the contact part with the butter material fastener 20. In this case, in addition to forming one section of the butter material with wood, the surface of the butter material may be covered with wood.

  Further, in the present embodiment, the four corners of the butter material 1 are chamfered in consideration of workability, buttering and cracking of the butter material, etc., but chamfering is not necessary when cost is given priority. Further, the cross-sectional shape of the butter material 1 may be not only a square but also a circle or an ellipse.

  Moreover, although the butter material 1 is formed of a cocoon core material, other wood such as cedar and pine may be used instead of the cocoon. Furthermore, although a core holding material is desirable in view of strength and the like, a location other than the core may be used depending on the location. In addition, it is preferable to use thinned wood produced in Japan, and it is possible to effectively use resources by using thinned wood, and it is advantageous in terms of environment such as reduction of CO2 emission.

  In the present embodiment, cypress wood is used as the wood material, but a so-called wood composite material such as synthetic wood formed by mixing wood powder and resin may be used.

DESCRIPTION OF SYMBOLS 1 Flutter material 2 Vertical flutter material 3 Horizontal flutter material 10 Formwork 10a Dam plate 20 Flutter material fastener 21 Separator 22 Cone 23 Foam tie (registered trademark)
23a Projecting portion 23b Elongated hole 24 Pad plate 25 Wedge 100 Butter material 101 Batter material side edge 103 Batter material bottom surface 103a Insertion hole

Claims (6)

  Butter material that is disposed on the outer surface of the concrete mold and pressed against the concrete mold by a butter material fastener that fastens the concrete mold, and a portion that contacts the butter material fastener is a wooden material Batter material for concrete formwork characterized by comprising.   The butter material for a concrete form according to claim 1, wherein all parts are made of a wooden material.   The butter material for a concrete form according to claim 1 or 2, wherein the portion made of the wood material has a square cross section and is chamfered at corners thereof.   4. The concrete formbatter material according to claim 1, wherein wood is used in the portion made of the wood material. 5.   The butter material for concrete formwork according to claim 4, wherein a core support material is used in the portion made of wood.   The thinning material for the concrete formwork according to claim 4 or 5, wherein a thinning material is used in a portion composed of the wood.

Images