JP2003120025A - Perforated form made of plastic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a perforated form made of plastic, easy to manufacture, not bulky in transportation and storage and easy to mount at a construction site. SOLUTION: A large number of reinforcing ribs 1 are lined up, and a large number of drain holes 2 are formed between the reinforcing ribs 1 to constitute a body part 3. Edge parts 4 for flanges are integrally formed in the plane direction at the edges of the body part 3, and a bending horizontal reinforcement 5 is bent at the boundary between the body part 3 and each edge part 4 for the flange.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic perforated frame for constructing a concrete foundation for supporting a building or the like, which can be easily attached.

[0002]

2. Description of the Related Art Conventionally, when building a building, a concrete foundation in which at least the lower part thereof is buried in the ground is first constructed. A concrete foundation is constructed by excavating a groove in the ground and placing concrete in the formwork installed in the groove, but the water in the concrete (commonly called Noro is called from the side of the formwork). There is known a lath form that can quickly extract (water containing a small amount of cement) to the outside. However, the lath formwork requires a large number of supporting members, has a high material cost, and since it is buried in the ground as it is after it is poured into concrete, there is a problem in terms of cost. Therefore, the present invention proposes a plastic perforated mold which has a high degree of freedom in shape and can be easily fixed to abandoned concrete in a trench excavated as a mold to be replaced with a lath form. This plastic perforated frame can be made by using waste plastic, for example, waste PET (PET), and is therefore extremely advantageous in terms of cost.

[0003]

The proposed plastic perforated frame has a rectangular plate-shaped face member having a plurality of ribs formed at predetermined intervals in the vertical direction, and a large number of flat faces of the face member are provided. Through hole for draining water. Both lower ends thereof are bent at a right angle, and one end surface of the lower end is seated on the waste container of the excavation trench. Therefore, there is a problem that the production is troublesome and bulky for transportation and storage. If all of them are formed flat in order to solve the problem, it is necessary to form a seated bent portion at the site, which causes a new problem that the site work becomes extremely difficult. Therefore, the present invention is easy to manufacture the plastic perforated frame itself,
An object of the present invention is to provide a product that is not bulky to store and transport and that can be easily attached on site.

[0004]

According to a first aspect of the present invention, a large number of reinforcing ribs (1) are formed in parallel and bent at predetermined intervals, and a large amount of water is provided between the reinforcing ribs (1). Vent hole (2)
The main body (3) formed with and the flange edge integrally extending in the plane direction of the main body (3) on the edge of the main body (3) in the longitudinal direction of the reinforcing rib (1). For bending, which is provided at the boundary between the part (4), the flange edge (4) and the body part (3), and has a straight plane and a curved cross section parallel to the reinforcing rib (1). A lateral stirrup (5); and the lateral stirrup (5) for bending is a flange edge with the lateral streak (5) as a boundary by applying an external force to the edge (4) for the flange.
(4) A perforated plastic mold which is formed so as to be bendable with respect to the main body (3).

According to a second aspect of the present invention, in the first aspect, each of the reinforcing ribs (1) has a trapezoidal outer periphery in a vertical sectional view parallel to the longitudinal direction, and is orthogonal to the reinforcing ribs. Both the outer circumferences of the main body part in the longitudinal direction of the reinforcing ribs (1) are formed in a trapezoidal or V-shaped outer periphery.
A pair of flange edge portions (4) are provided on both edges of (3), and a pair of the bending portions are provided at the boundary between the flange edge portions (4) and the main body portion (3). Cross bar (5),
Each of the folding horizontal bars (5) is a plastic perforated frame formed by bending so that it can be easily bent only on the side of the reinforcing rib (1).

The present invention according to claim 3 is the plastic perforated frame according to claim 1 or 2, wherein a plurality of nail holes (6) are formed in the flange edge portion (4).

According to a fourth aspect of the present invention, a large number of reinforcing ribs (1) are formed by bending in parallel at predetermined intervals, and a plurality of drainage holes (2) are formed between the reinforcing ribs (1). The formed main body (3) and the reinforcing rib (1) are integrally extended at both edges of the main body (3) in the longitudinal direction of the main body (3) in the plane direction of the main body (3). Has a U-shaped cross section parallel to
A pair of connecting edges (7) and (8), one on the side of the reinforcing rib (1) and the other on the opposite side, and the connecting edge (7) and the main body (3). And a retaining horizontal bar (9) having a straight plane and a curved cross section parallel to the reinforcing rib (1) on the boundary with the connecting edge of one of the connected ones. When the (7) and the other connecting edge portion (8) are fitted together, the retaining lateral ribs (9) support both of them to prevent them from traversing the reinforcing ribs of the main body (3). Thus, the cut side is the plastic porous mold in which the reinforcing ribs are aligned and connected to the plastic porous mold of any one of claims 1 to 3.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a main part of the plastic porous mold of the present invention, showing a molded state as a product. Also,
FIG. 2 shows an example of the attached state. The illustrated plastic perforated frame 14 is arranged at the bottom in the field, and a large number of reinforcing ribs 1 whose longitudinal direction is formed in the longitudinal direction are arranged in parallel at equal intervals. The transverse section and the longitudinal section of the reinforcing rib 1 are each bent and formed in a trapezoidal shape. The reinforcing rib 1 may be formed in a V-shaped cross section. A large number of water drainage holes 2 are formed between the reinforcing ribs 1, and the main body portion 3 is constituted by them.

Flat flange edges 4 extend in the plane direction of the main body 3 at both upper and lower ends of the main body 3. At the boundary between the flange edge portion 4 and the main body portion 3, a bending transverse line 5 is bent and formed. The bending transverse line 5 is formed in a groove shape having a straight plane, and is adjacent to the edge of each reinforcing rib 1. The radius of curvature of the bending horizontal bar 5 is 3 to 5 m.
About m is preferable.

The folding horizontal streaks 5 are flange edge portions 4.
In addition, when an external force is applied in the direction of bending it toward the reinforcing rib, it is relatively easily bent as shown in FIG. At this time, due to the presence of many reinforcing ribs 1,
It does not inadvertently bend itself at the position of the main body 3. The plastic perforated frame 14 can be manufactured at a low cost by using a waste plastic material such as a pet by heat molding or press molding a plate material having a thickness of about 1 to 3 mm. The diameter of the drain hole 2 is preferably about 6 to 12 mm. Further, the height of the reinforcing rib 1 is appropriately determined so as to have a section modulus that can withstand the pressure of the concrete placed inside. As an example, it is about 10 to 50 mm.

Next, the flange edge 4 is provided with a large number of nail holes 6 at a center position in the width direction thereof at regular intervals. The plastic porous mold 14 thus formed is
As an example, it is erected in a trench excavated as shown in FIG.

[0012]

[Method of use] That is, the bottom of the excavated trench is filled with abandoned concrete (commonly known as abandoned concrete) evenly and waits until it hardens to some extent. Then, on site, at least on the flange edge 4 of the lower end edge of the plastic perforated frame 14,
External force is applied to the reinforcing rib side by human power, and the bending horizontal bar 5
Bend at a right angle to the main body part 3 with the boundary as a boundary. Then, the flange edge 4 is seated on the discarded concrete, and a concrete nail or the like is driven into the nail hole 6 provided therein. Then, a pair of plastic porous molds 14 are erected in parallel.

At that time, a pair of plastic porous molds
A large number of spacers 10 are arranged between 14 and their flanges abut against the inner surface of the mold, and the shafts protruding from the flanges penetrate the water draining holes 2. Then, on the outer surface side of the plastic porous frame 14, horizontal pipes 12 or round bars are horizontally installed at regular intervals, and a pair of vertical pipes 11 is further installed.
12 and the like are erected on the outer surface side, and they are fixed to the spacer 10 via a fixing member 13, a fastener such as a nut. In addition,
A square bar (not shown) having an appropriate thickness is fixed to the upper edge of the plastic porous mold 14, and the plastic porous mold 14
Braces or the like (not shown) for fixing are attached.

The pair of plastic perforated frames 14 thus erected in this manner are filled with fluidized concrete from a concrete mixer through a concrete pump and a hose. Then, the moisture is efficiently discharged from the drain hole 2. When it is necessary to raise the concrete foundation, the same plastic porous mold 14 can be connected to the upper end of the plastic porous mold 14. Further, the plastic perforated frame to be connected to the upper end is formed by dividing the plastic perforated frame 15 as shown in FIG. 3 into an appropriate length so that the cut surface 15a is located on the lower side as shown in FIG. A desired height can be obtained by superposing the respective reinforcing ribs 1.

Furthermore, the plastic perforated frame 15
Further, another plastic perforated frame 15 made of plastic can be connected to the upper end of the frame as shown in FIG. That is, the pair of upper and lower plastic porous mold frames 15 can be connected by fitting the connecting edge portions 7 and 8 to each other. That is, by horizontally slidingly fitting the connecting edge portion 8 of the upper plastic porous mold frame 15 to the connecting edge portion 7 of the lower plastic porous mold frame 15, the connecting edge portion 7 is formed. The U-shaped part of 8 can be supported by the retaining horizontal bar 9. Further, the plastic perforated frame 15 located on the lower side, which is cut to an appropriate height, can be connected in the same manner as in FIG. 4 regardless of whether it is on the right side or the left side of FIG. . It is shown in Figure 3.
This is because the plastic porous frame 15 is formed in left-right rotational symmetry with respect to the center.

The plastic perforated frame 15 is the flange edge portion 4 of the plastic perforated frame 14 shown in FIG.
Can be formed by secondary processing. That is, both edges in the vertical direction are bent in a U shape, one connecting edge 7 is bent in a U shape on the side opposite to the reinforcing rib 1, and the other connecting edge 8 is bent in a reinforcing rib. It bends to the 1 side. Then, the bending horizontal bar 5 in FIG. 1 forms the retaining horizontal bar 9 in FIG. The protruding portion of the retaining horizontal bar 9 is sized to support the curved portion of the connecting edge portion 8. In this way, a plurality of plastic porous molds 15 can be vertically connected to form a mold having a desired height.

Next, when the concrete filled in the form is hardened, the pipe fitting 13, the vertical pipe 11 and the horizontal pipe 12 are removed, or the soil is buried as it is without removing at least a part of them. return. At least the plastic perforated frame 14 is always buried in the soil.

[0018]

According to the present invention as set forth in claim 1, at the edge of the main body 3 having the reinforcing rib 1 and the drainage hole 2, the flange edge 4 is provided in the plane direction of the main body 3. A horizontal transverse line 5 for bending is provided so as to extend integrally with each other. Then, by applying an external force to the flange edge portion 4, the flange edge portion 4 can be bent with respect to the main body portion 3 with the bending transverse line 5 as a boundary. Therefore, the flange edge portion 4 in the bent state is the base portion. It can be seated on and fixed easily and quickly. In addition, since the flange edge 4 is integrally extended in the plane direction of the main body 3 before the mounting of the formwork, the plastic is easy to manufacture and easy to handle without being bulky for transportation and storage. A porous mold can be provided.

According to the present invention as set forth in claim 2, since the longitudinal section of the reinforcing rib 1 is trapezoidal, and the outer circumference of the reinforcing rib is bent into a trapezoidal shape or a V-shape, a large number thereof including the reinforcing rib 1 portion. The porous molds can be stacked on top of each other, and their transportation and storage are easy. According to the present invention described in claim 3, since the plurality of nail holes 6 are formed in the flange edge portion 4, by driving the nail into the nail hole 6 in a state where the flange edge portion 4 is bent, The formwork can be easily erected.

According to the present invention as set forth in claim 4, by cutting the entire formwork at an appropriate height in the longitudinal direction of the reinforcing rib 1, it is connected to the plastic porous formwork located at the lowermost end. can do. Next, in order to manufacture a higher mold, the connecting edge 7 of another plastic porous mold is fitted to the connecting edge 7 provided at one end of the mold so that the entire mold height is increased. Can be easily increased.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing an example of a plastic porous mold of the present invention and a schematic cross-sectional view taken along the line BB thereof.

FIG. 2 is a perspective view of a main part showing a usage state of the mold.

FIG. 3 is a side view of another plastic perforated frame of the present invention.

FIG. 4 is a perspective view of a main part showing a connected state of the mold.

5 is an explanatory view showing a connected state of the plastic porous mold frame 15 and the plastic porous mold frame 14 shown in FIG. 1. FIG.

[Explanation of symbols]

1 Reinforcing rib 2 drainage holes 3 main body 4 Edge for flange 5 Horizontal bar for bending 6 nail holes 7,8 Connection edge 9 Horizontal line for retaining 10 Spacer 11 Vertical pipe 12 Horizontal pipe 13 Fixing bracket 14,15 Plastic perforated formwork 15a Cut surface

Continued front page    (72) Inventor Miyamoto             Sumire, 3-13-16 Funato, Itabashi-ku, Tokyo             No. 201

Claims (4)

[Claims] 1. A main body (3) having a large number of reinforcing ribs (1) arranged side by side at a predetermined interval and bent, and having a plurality of drainage holes (2) formed between the reinforcing ribs (1). And a flange edge (4) integrally extending in the plane direction of the main body (3) at the edge of the main body (3) in the longitudinal direction of the reinforcing rib (1), and A fold transverse rib (5) which is provided at a boundary between the edge portion (4) and the main body portion (3) and has a flat plane and a curved cross section parallel to the reinforcing rib (1). , The bending transverse bar (5) is a flange edge
A perforated plastic frame which is formed so that the flange edge (4) can be bent with respect to the main body (3) with the lateral streaks (5) as a boundary by applying an external force to (4). 2. The reinforcing ribs (1) according to claim 1, wherein each of the reinforcing ribs (1) has a trapezoidal outer periphery in a longitudinal sectional view parallel to the longitudinal direction thereof, and has a trapezoidal outer perimeter orthogonal to the longitudinal direction. Alternatively, a pair of flange edge portions (4) are provided on both edges of the main body portion (3) in the longitudinal direction of the reinforcing rib (1), and the flange edge portions (4) are formed. ) And the main body (3),
A plastic perforated frame which is provided with a pair of the bending horizontal bars (5), and the bending horizontal bars (5) are bent so that they can be easily bent only on the reinforcing rib (1) side. 3. The plastic perforated frame according to claim 1, wherein a plurality of nail holes (6) are formed in the flange edge portion (4). 4. A main body (3) having a large number of reinforcing ribs (1) arranged side by side at a predetermined interval, and having a plurality of drainage holes (2) formed between the reinforcing ribs (1). And on both edges of the main body (3) in the longitudinal direction of the reinforcing rib (1), integrally extended in the plane direction of the main body (3),
A pair of connecting edge portions (7) (8), each of which has a U-shaped cross section parallel to the reinforcing rib, and one of which is bent to the reinforcing rib (1) side and the other to the opposite side thereof, At the boundary between the connecting edge portion (7) and the main body portion (3), there is provided a retaining horizontal bar (9) having a linear plane and a curved cross section parallel to the reinforcing rib (1). However, when one of the connecting edges (7) and the other of the connecting edges (8) that are connected to each other are fitted,
Both of them are supported by the retaining horizontal bar (9), and are cut so as to traverse the reinforcing ribs of the main body (3), and the cutting side thereof is one of the claims 1 to 3. A plastic porous mold whose reinforcing ribs are aligned and connected to a plastic porous mold.