JPH0551962A - Form material for concrete structure and method of form burying construction using the form material - Google Patents

Abstract

PURPOSE:To simplify execution by forming an undercut section to the internal surface of wooden forms forming a wall, a column, etc., unifying the undercut section with placed concrete and utilizing the forms as an interior finish material or a foundation material as they are. CONSTITUTION:An undercut section 3 is formed to the internal surface of wooden forms A formed by connecting a plurality of unit board bodies while a flexible elastic material composed of a synthetic resin, etc., is stuck onto an external surface, and the forms are constituted under windable and re-windable states in a roller screen shape. The forms A are assembled, and concrete B is placed on the inside, thus unifying the forms A and concrete B. Accordingly, the forms need not be removed, thus simplifying execution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork material used when constructing a cast-in-place concrete structure and a method for embedding a formwork using the formwork material, and more particularly, to the wall surface, ceiling or The present invention relates to a form material that can be used as an interior material or a base material as it is when forming a pillar part and the like, and a panel embedding method using the form material.

[0002]

2. Description of the Related Art Conventionally, in the case of constructing a concrete structure on site, the concrete frame preformed in a rectangular shape is usually joined to the portion framed by a holding member such as a steel pipe. Wall of concrete structure,
The actual situation is to construct a concrete structure by covering the outer peripheral surface of the ceiling or pillars, injecting concrete between them, and removing the concrete panel after the concrete has solidified and dried.

[0003]

In the conventional cast-in-place panel construction method, it takes a lot of time and labor to form a construction surface by connecting a large number of small rectangular panels formed in advance to a standard size in advance. At the same time, this assembled panel injects concrete and the concrete solidifies and
Once dry, it must be removed, requiring a lot of manpower and time to assemble and disassemble the panel.

Further, usually, the appearance of the concrete is very poor when it is left exposed, and it is necessary to finish the surface with cloth or tiles in order to impair the appearance. However, sufficient heat insulation and soundproofing / moistureproofing cannot be obtained simply by placing a cloth or vinyl cloth or tiles on the concrete wall surface.

Therefore, conventionally, when a building such as an office or a room of a general household which requires heat insulation and soundproofing / moistureproofing is constructed with concrete, a heat insulating material layer is provided on the inside of the concrete wall surface or wood is used. In order to utilize the heat insulation function and soundproofing / moistureproofing function, the interior is often made of wood material.
It is difficult for an unskilled person to attach (fix) these to a concrete wall surface, and since such an interior work can be performed only by a skilled construction technician, it is a cause of a shortage of construction workers.

According to the present invention, when pouring concrete into a panel (formwork material), it is used in the same manner as a conventional panel, and after pouring concrete, the formwork material is substantially integrated with concrete and the surface of the construction surface is By eliminating the work of removing the panel or rearing it after the concrete has solidified and dried, the finished surface has a heat insulating function and a soundproof / moistureproof function. It is intended to provide the construction method.

[0007]

According to the present invention, it is attempted to construct a wooden form fitting member 8 which is framed in advance according to the shape of a construction portion such as a wall surface, a ceiling or a pillar of a concrete structure. The wall of the concrete structure,
Wooden form material A formed according to the size of the ceiling or columns
In a formwork material for fixing concrete to form a panel for a concrete structure, undercut parts 3a, 3b, 3c, 6a, 6b, 6 are formed on a surface of the formwork material A which is a concrete injection surface.
A formwork material for a concrete structure is obtained which is characterized in that c and 6d are formed.

Further, according to the present invention, a wooden formwork mounting member 9 framed in advance in accordance with the shape of a construction portion such as a wall surface, a ceiling or a pillar of a concrete structure is previously formed,
Undercut parts 3a, 3b, 3 on the concrete injection surface side of the form fitting member 9 are matched to the dimensions of the wall surface, ceiling or pillar of the concrete structure to be constructed.
The wooden form material A having c, 6a, 6b, 6c, 6d is detachably attached to form a concrete structure panel, and the panels are spaced apart and fixed back to back by a spacing tool. Then, the concrete B is poured in the meantime, and after the poured concrete B is solidified and dried, the wooden form material A is left attached to the concrete structure side, and only the form fitting member 9 is disassembled and removed. A method of embedding a concrete structure in a form is obtained.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. First, the wooden form material A of the present invention will be described. The wooden form material A is made of wood, for example, cypress, cedar, pine, or the like, and this material may be a thinning material or a residual material obtained by removing a structural material such as a pillar.

This wooden form material A has a large number of elongated rectangular unit plate bodies 1, 1 ', having a width W, a length L, and a thickness T, as shown schematically in FIGS. It is formed by a combination of 1 ".

Then, the female shapes and male shapes of the unit plate bodies 1, 1 ', 1 "are fitted to each other to combine a predetermined number of sheets,
A flexible elastic material 2 such as cloth or synthetic resin is attached to one surface (bottom surface or surface) of the plurality of unit plates 1, 1 ', 1 "
Tied to each other and having the same width W'as the construction surface
To form.

3 and 4 are sectional views showing various embodiments of the wooden form material A having different sectional shapes. That is, FIG.
(A), (b), (c) and FIGS. 4 (a), (b),
The examples shown in (c) and (d) have the same gauge in that the undercut portion is formed on the surface that becomes the concrete injection surface, but the shape, position and adjacent unit of the undercut portion Since the shapes and the like of the joints between the plate bodies 1 and 1'are different, duplicate description of common points will be omitted, and only different points will be mainly described.

FIG. 3 (a) shows that the unit plates 1, 1 ', 1 "are provided on the concrete injection surface side, respectively.
The undercut portions 3a, 3a, which are trapezoidal cross-section grooves, are formed along the lengthwise direction of 1 ", and rectangular cross-section grooves 4a, 4a are formed on the opposite side of the concrete injection surface.

Further, the opposing long-side side surfaces of the unit plate bodies 1, 1 ', 1 "form a groove-shaped female shape 5a cut into one side surface and project in a mountain shape on the other side surface. It forms a cross-shaped male shape 5b.

In FIG. 3B, the undercut portions 3b, 3b formed by grooves having a trapezoidal cross section are formed.
Same as the example of (a), but with undercut portions 3b, 3
The difference is that b is formed by two unit plate bodies 1 and 1'adjacent to each other. Further, it differs from that of FIG. 3A in that the grooves 4b, 4b formed on the opposite side of the concrete injection surface are arcuate.

In FIG. 3 (c), the example shown in FIGS. 3 (a) and 3 (b) has an undercut portion formed so as to be cut from the surface of the unit plate 1, 1 ', 1 ". On the other hand, undercut portions 3c and 3c are formed by projections having a substantially rhombic cross section, and elongated U-shaped grooves 4c and 4c are formed on the side opposite to the concrete injection surface.

In the example of FIG. 3, there is no correlation between the shapes of the undercut portions 3a, 3b and 3c and the shapes of the grooves 4a, 4b and 4c formed on the side opposite to the concrete pouring surface. Needless to say, can be changed. The shape of the undercut portion is merely an example, and it goes without saying that various other shapes are possible.

In FIG. 4A, similarly to the structure shown in FIG. 3B, undercut portions 6a and 6b formed by grooves having a trapezoidal cross section are formed by unit plate bodies 1 and 1'adjacent to each other. As shown in FIG. 4A, the unit plate body 1,
The difference is that planes are simply engaged with each other, without forming a dog-shaped female shape and a male shape which are engaged with each other on the side surfaces on the opposite long side of 1 ', 1 ".

FIG. 4 (b) is similar to that shown in FIG. 3 (a), and the unit plate bodies 1, 1'are provided on the concrete injection surface side of each of the unit plate bodies 1, 1 ', 1 ". , 1 "are undercut portions 6b, 6b which are trapezoidal grooves along the length direction.
The unit plate body 1,
3 (a) in that the flat surfaces are simply engaged with each other without forming a dog-shaped female shape and a male shape that are engaged with each other on the side surfaces on the opposite long side of 1 ′, 1 ″. It differs from the example.

4 (c) and 4 (d) are basically the same as those of FIG. 4 (a), but the shape of the undercut portion is the same as that of FIG. 4 (c). Rice ball 6c,
6c, and the one shown in FIG. 4 (d) is different in that the cross-sectional shape is hexagons 6d, 6d.

In the example shown in FIG. 4, the side opposite to the concrete injection surface is a plane, but various grooves may be formed as in the case shown in FIG. Needless to say.

As described above, since the wooden form material A is attached by the flexible elastic material 2 such as cloth or synthetic resin and connected to each other, as shown in FIG. It can be wound and unwound in a circular shape, and if it is rolled in a circle as shown in FIG. 5 during transportation, it becomes compact and convenient. Needless to say, a large standard product may be formed in advance as the wooden frame material A, and the wooden frame material A may be cut according to the shape of the construction surface during construction.

Next, a method for constructing a wall surface will be described with reference to FIGS. 6 to 9. First, as shown in FIG. 6, the wooden form material A is cut according to the shape of the wall surface. At this time, if there is the window 7, the window portion is also cut off.

Then, a mold mounting member 9 is fixed to the wall surface framed by a holding member 8 such as a steel pipe by a known method adjacent to the holding member 8. This formwork attachment member 9
Then, the wooden form material A is rewound and adhered to each other, and is fixed to the form fitting member 9 with a nail 10 to form a panel.

The formwork mounting member 9 and the wooden formwork material A
The fixing (formation of the panel) may be carried out in an upright state by fixing the form fitting member 9 to the holding member 8 such as a steel pipe as shown in FIG. It is also possible to assemble on a flat surface such as a floor, fix the wooden form material A to this with nails 10, and then stand and fix it to the holding member 8.

As shown in FIG. 8, the substantially single panel thus formed is held at a constant interval by the separator 11 with the surfaces on which the flexible elastic material 2 is not adhered facing each other. At the same time, it is firmly fixed to the holding member 8 such as the steel pipe by the home tie 13 via the washer 12. At this time, the separator hole 11 ′ for inserting the separator 11 into the wooden form material A may be opened in the wooden form material A in advance, or may be opened when the separator 11 is inserted. Then, concrete B is poured between the panels (wooden form material A).

FIG. 9 shows an example of forming a pillar portion. In the case of a pillar, a wooden form material A cut along each side is formed around the reinforcing bar 14 and is fixed around the reinforcing bar 14. Then, concrete B is poured between the panels (wooden form material A).

FIG. 10 shows an example of a concrete wall surface constructed according to the present invention. As can be seen from this figure, the wooden form material A and the concrete B are integrated and separated from each other after the concrete B that has penetrated into the undercut portion 3 (6) of the wooden form material A is solidified and dried. There is no.

[0028]

According to the present invention, an undercut portion is formed on the surface of a wooden form material, and a panel (formwork material) is used in the same manner as a conventional panel at the time of pouring concrete, and after the concrete is poured. Since the form material is formed substantially integrally with the concrete to form the surface of the construction surface, it is possible to eliminate the work of removing the panel and post-fixing it after the solidification and drying of the concrete, as in the past. The finished surface has a heat insulating function and a soundproofing / moistureproofing function, so that a concrete structure having a wooden surface can be obtained.

Also, the wall is formed by substantially one panel,
It is possible to form a construction surface such as a ceiling or a pillar,
Unlike the prior art, it is not necessary to connect a large number of small panels, which improves the work efficiency. Moreover, as in the embodiment shown in FIG. 3, if the adjacent unit plate members are formed into a V-shaped male / female engagement, the joint concrete between the panels does not invade and burr does not occur.

Further, if a concave groove is formed on the surface of the wooden form material opposite to the side where the undercut portion is formed as in the embodiment shown in FIG. 3, the drying of the concrete can be promoted and further It has the effect of enhancing the sound absorbing effect.

[0031]

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of a wooden form material of the present invention.

FIG. 2 is a schematic plan view of a wooden form material of the present invention.

FIG. 3 is a diagram showing an example of a cross-sectional shape of the wooden form material of the present invention.

FIG. 4 is a diagram showing another example of the cross-sectional shape of the wooden form material of the present invention.

FIG. 5 is a view showing a winding state of the wooden form material of the present invention.

FIG. 6 is a schematic front view of the present invention as a wall panel.

FIG. 7 is a constructional state diagram of the wall surface panel of the present invention.

FIG. 8 is a construction sectional view of a wall surface according to the present invention.

FIG. 9 is a construction sectional view of a pillar portion according to the present invention.

FIG. 10 is a cross-sectional perspective view showing an example of a wall surface constructed according to the present invention.

[Explanation of symbols]

A wooden formwork material 1, 1 ', 1 "(plurality) unit plate body 2 flexible elastic material 3a, 3b, 3c, 6a, 6b, 6c, 6d undercut portion 8 holding member 9 formwork mounting member

Claims (7)

[Claims] 1. A wall surface, a ceiling or a pillar of a concrete structure to be constructed on a wooden form fitting member which is framed in advance according to the shape of the wall, ceiling or pillar of the concrete structure. In a formwork material for fixing a wooden formwork material formed according to the dimension of 1 to form a panel for a concrete structure, an undercut portion is formed on a surface of the formwork material which is a concrete injection surface. Formwork material for concrete structures. 2. The concrete structure according to claim 1, wherein the undercut portion of the formwork material for concrete structure is formed by an interaction between two adjacent unit plate members. Formwork material. 3. The formwork material for a concrete structure is formed into a substantially single plate-like body that can be wound into a blind and rewound. Formwork material for concrete structures. 4. The formwork material for a concrete structure according to claim 1, wherein a concave groove is formed on a surface of the formwork material for a concrete structure opposite to an undercut portion. 5. A wooden form fitting member, which is framed in accordance with the shape of a construction part such as a wall surface, a ceiling or a pillar of a concrete structure, is previously formed, and the form mounting member is
To form a concrete structure panel by detachably mounting a wooden form material with an undercut portion formed on the concrete injection surface side according to the dimensions of the wall surface, ceiling or column of the concrete structure to be constructed, Fix two panels at a distance, back-to-back with a spacing holder,
A concrete structure characterized by injecting concrete in the meantime, and after the injected concrete has solidified and dried, the wooden form material is left attached to the concrete structure side and only the form fitting member is disassembled and removed. The method of embedding the formwork of objects. 6. The panel of the concrete structure, after the wooden formwork material is fixed with the wooden formwork attachment member placed on a flat surface such as on the floor, it is erected and fixed to the construction portion by the spacing holder. The method for embedding a concrete structure in a formwork according to claim 5, wherein 7. The panel of the concrete structure is characterized in that a wooden form member is fixed to the form attaching member in a state in which a wooden form attaching member is erected on a construction portion. The method for embedding a concrete structure according to claim 5 in a formwork.