JP2829600B2 - Method of assembling mold for casting concrete foundation for building and same form - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a mold for pouring a concrete foundation for a building and the same.

[0002]

2. Description of the Related Art FIG. 9 is a cross-sectional view showing a method of assembling a mold for pouring a concrete foundation for construction in a conventional product. Reference numeral 10 denotes a foundation surface formed by digging the ground G to a certain depth and slab concrete, and plywood panels 11, 11 are placed on the foundation surface.
Are erected at regular intervals, the two plywood panels 11, 11 are connected by a separate metal fitting 12, and a reinforcing bar 13 is incorporated therein. First, concrete is cast as a cloth foundation A, and this is in a hardened state. Then, the plywood panels 13, 13 of the base portion are erected on the surface, and the formwork is assembled in a state where the spaces are held by the separate metal fittings 12, and the concrete is poured again to form the base concrete B projected to the ground surface. To do so. Although the above description has been made of the two-stage concrete casting, it is also practiced to create a mold so that the concrete can be cast at once from the beginning.

[0003]

In the above-mentioned conventional construction of a concrete foundation for a building, the former two-stage method of concrete pouring is mainly used, but it takes time and effort. On the other hand, the latter method, in which concrete is cast at once, has a problem in that the assembling work of the formwork itself is complicated and requires skill and time. The present invention has been made to solve the above problems.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a plurality of sheets of used paper coated with an adhesive on one side are superposed to have a thickness of 3 mm to 15 m.
m sheet is formed in a male / female mold, and the sheet is pressed and formed into a molded article with a shoulder step that spreads downward. A method for assembling a casting formwork for a concrete foundation for building, characterized in that an angle member having an L-shaped cross section and a vertically downward direction are used as an auxiliary member for holding the sheet molded product at a constant interval. The workability can be improved by using a spacing plate or the like having a plurality of slit grooves corresponding to the thickness of the sheet material.

[0005]

FIG. 1 is a perspective view showing an example of a casting formwork of a concrete foundation for construction according to the present invention. In the production, a waste paper having a thickness of about 0.1 mm to 1 mm is used. A sheet having a thickness of 3 mm to 15 mm is formed by laminating a plurality of sheets coated with an adhesive such as a vinyl resin on one side, and the sheet is pressed and molded in male and female molds, and the cross section is directed downward. A molded product 1 with a shoulder p to be opened is provided. The height h is 40 cm to 100 cm and the length 1 is 80 cm.
~ 200 cm. FIG. 2 shows another example of a molded product 1 ′ in which a flange portion k is simultaneously integrally molded outwardly of a lower end portion of the open leg of the molded product 1.

The above-mentioned sheet molded products 1 and 1 'are for forming a straight portion, but a separate molded product is used in a corner portion, that is, for the above-mentioned 1 or 1' sheet molded product. A key-shaped notch 2 is formed by drilling from the center of the upper part a to the shoulder b, or from the shoulder b to the open leg of the lower part c.

In FIG. 3, a key-shaped notch 2 is formed from the center of the upper part a of the sheet molded product 1 to the shoulder step b, and a fold f is provided in the lower open leg part b. This is a molded product 3 that can be bent to the side. FIG. 4 is a diagram showing the bent state.

The above-mentioned molded product 3 is a molded product located at a position outside the corner portion. FIG. 5 shows a molded product 4 also located at the inside position of the corner portion. The lower shoulder portion is formed from the central shoulder step portion, and a fold f is provided at the upper center so that it can be bent outward. FIG. 6 is a view showing the bent state. .

In the above embodiment, the corner member using the sheet molded product 1 has been described. However, the present invention can be similarly applied to the sheet molded product 1 '. In this case, the sheet moldings 1 and 1 'may be provided with reinforcing ribs and strip-forming plate members at locations not obstructing the outer surface.

FIG. 7 shows an auxiliary member used in the embodiment of the present invention. Reference numeral 5 denotes a spacing plate. The plate can be made of the same material as the above-mentioned sheet-formed plate, but a wood plate, a synthetic resin plate or a metal plate can also be used. At this time, a plurality (two in the illustrated example) of elongated grooves g having a size width slightly larger than the thickness of the sheet molded product are drilled vertically downward on both side ends of the plate 5. It is. 6 and 7 are angle brackets which are used for the above-mentioned sheet-formed plate without the flange k.
In addition to the metal sheet, it may be formed by pressing a used paper material as in the case of a sheet molding plate, or may be a molded article of a hard synthetic resin. Reference numerals 8 and 9 denote connection fittings on the upper part of the sheet molded product. The former is to be fitted into an upper edge portion between adjacent sheet molded products, and the latter is a connection fitting at a portion indicating a right angle of a corner portion. This is a manufactured product similar to the above.

FIG. 8 is a diagram for explaining the operation of assembling a formwork using a sheet molded product, the spacing plate 5, and the like, and shows the basic black lines m, m drawn on the concreted base surface 10. The sheet-formed products (1 'in the illustrated example) are symmetrically arranged along the ribs, and nails 7 are hit at the respective k-points of the flanges to be fixed, and the upper edges of the sheet-formed products 1' and 1 'are spaced-apart plates. 5 and is held at a constant interval by engaging with the elongated groove g.

On the other hand, in the corner portion, the sheet molded products 3 and 4 are bent at right angles toward the inside or outside at the fold f, respectively. In this case, the notches facilitate the bending. At the same time, the wall surfaces that are bent in the perpendicular direction are complementarily formed in a continuous state. The spacing plate 5 at the corner portion is used in an oblique state as shown in the illustrated example.

On the other hand, although illustration and illustration are omitted in this figure, a base reinforcing bar and an underground beam reinforcing bar to be erected therefrom are conventionally provided in a mold formed by the sheet molded product assembled as described above. Therefore, after the arrangement of the reinforcing bars, the above-described mold assembly of the present invention is performed so as to surround the outside of the reinforcing bars.

In the above structure, a suitable place between the mating sheet forming plates may be fixed using a separator if necessary, and an insertion hole for this purpose is previously formed in the sheet plate surface. You can also pierce.

According to the present invention, concrete is poured from above at once and solidified with time after the above-described formwork construction. After solidification, the entire formwork can be removed by removing the spacing plate 5 and the like. The lower part c serving as the cloth foundation to be backfilled in the soil may be left as it is, that is, in this case, the upper body part a which protrudes to the ground is moved from the vicinity of the boundary with the shoulder step b. Cutting and removing with a cutter or a saw blade may be acceptable.

[0016]

The present invention is carried out as described above. Since the sheet-formed plate of the present invention is light in weight, it can be easily transported to a construction site, and can be easily handled at a work site. In addition, the workability can be dramatically improved since it is sufficient to simply assemble the outer side after the arrangement work. Further, since it is possible to easily form the divergent inclined surface of the cloth foundation, which is difficult in the conventional operation, a concrete foundation having excellent earthquake resistance can be obtained. In addition, there are other excellent features as follows. Since the paper surface is smooth, it is suitable for concrete casting, the flow of concrete is good, the precision is excellent, and the finished concrete surface after solidification is also beautiful. It has good concrete release, is hard to break and has excellent durability. Construction costs can be reduced. It can be easily incinerated and blend into the environment. According to the second aspect of the present invention, since the sheet molded product can be brought into the standing state at the same time as the fixing of the angle material, the workability is further improved and the efficiency is improved. The formwork according to claims 3 and 4 is claimed in claim 1 or 2
This is very effective in suitably carrying out the method described.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a sheet molded product used in a method of assembling a mold according to the present invention.

FIG. 2 is a perspective view of another example.

FIG. 3 is a perspective view of another example.

FIG. 4 is a perspective view of another example.

FIG. 5 is a perspective view in which the molded product of FIG. 3 is bent into a square shape.

FIG. 6 is a perspective view in which the molded product of FIG. 4 is bent into a square shape.

FIG. 7 is a perspective view showing an example of an auxiliary member used in the present invention.

FIG. 8 is a perspective view showing an assembled state of a mold.

FIG. 9 is a sectional view of a conventional mold structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet molded article 1 'Sheet molded article 2 Key-shaped notch 3 Sheet molded article 4 Sheet molded article 5 Interval maintenance material 6 Angle material

Claims (4)

(57) [Claims] 1. A sheet having a thickness of 3 mm to 15 mm is formed by laminating a plurality of sheets of waste paper coated with an adhesive on one side thereof, and the sheets are pressed and molded in male and female molds and opened downward. A method of assembling a casting formwork for a concrete foundation for construction, comprising forming a molded article with a shoulder step to be legged, and holding the molded article opposite at a predetermined interval. 2. A sheet having a thickness of 3 mm to 15 mm is formed by laminating a plurality of sheets of used paper coated with an adhesive on one side thereof, and the sheets are pressed and formed in male and female dies and opened downward. A molded article with a shoulder step is to be made into a leg. On the other hand, an angle member having an L-shaped cross section is fixed to a fixed width on the surface on which the base concrete has been struck, and the enlarged portion of the sheet molded article is lowered into a vertical member of these angle materials And holding it in a temporary locked state via a spacing material formed by vertically drilling a plurality of slit grooves corresponding to the thickness of the sheet in the upper part on the other side. A unique method of assembling a formwork for casting concrete foundation for construction. 3. A sheet having a thickness of 3 mm to 15 mm is formed by superimposing a plurality of sheets of waste paper coated with an adhesive on one side thereof,
A casting mold for a concrete foundation for construction, characterized in that said sheet is formed in male and female molds to form a molded article with a shoulder step which opens downward. 4. The building concrete according to claim 3, wherein a flange portion k is formed so as to project outwardly from a lower end hem portion of the molded article with a shoulder step which is opened downward. Casting formwork for the foundation.