JPH0449324Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a plate for formwork used when pouring concrete in construction.

Conventionally, thick veneer plywood, commonly known as "Konpane", has been used for this type of board, but such plywood can only be used three to four times at most, and in addition, once it has been shaped, it cannot be used. It is almost impossible to use plywood again. That is,
Plywood is made of wooden veneers laminated and glued together, so it is susceptible to peeling and rotting when exposed to moisture. As a result, durability deteriorates with repeated use, and eventually it has to be exhausted after 3 or 4 uses. In addition, when reusing a building, it is necessary to carry out recycling work such as removing adhering concrete, filling holes, removing nails, painting, etc. to make it durable for reuse, and this work is quite complicated and is difficult for builders. It was becoming a burden. In addition, plywood is easy to cut, so the shape of the formwork can be set freely, but once it is cut, it cannot be reused without going through processes such as disassembling and adding pieces, and in the end it is a half-hearted process. The reality is that it is disposed of as a material.

Therefore, a large amount of inventory must be kept at all times, which requires a large space for storing materials, which is difficult to manage. Furthermore, the disposal of waste materials must rely exclusively on incineration, which tends to cause various problems related to pollution.

Therefore, the present invention provides a plate for concrete formwork that has excellent durability and can be formed into a desired shape without producing offcuts, thereby improving workability and eliminating waste of wood resources. The structure consists of mountain lines with flat tops and valleys with flat bottoms arranged side by side alternately, and each top and bottom surface is connected by an inclined side surface. It is a corrugated metal plate body, in which a large number of long holes are bored in at least one of the top surface of the ridges and the bottom surface of the troughs, and the holes are inclined with respect to the axial direction. It is characterized in that the elongated holes are arranged symmetrically in the axial direction and laterally and vertically with respect to the two vertical and horizontal center lines of the plate.

Next, an example of implementation of the present invention will be described with reference to the drawings.

Figure 1 shows the outline of the plate for concrete formwork of the present invention, in which the grooves of a corrugated metal plate measuring 180 cm x 90 cm and 1 mm in thickness are approximately 45 mm in the direction of the valley lines. A large number of oblique holes are drilled at equal intervals. The corrugated plate 1 has a bottom side of 40 mm and an upper opening surface.
Valley stripes with a trapezoidal cross section of 50mm and 12mm in height,
It consists of mountain lines that are symmetrical to the valley lines, and these valley lines and mountain lines are arranged alternately and at the same pitch. Each mountain line and valley line is a flat top surface 1b or bottom surface 1
a, and each top surface 1b and bottom surface 1a are connected by an inclined side surface. Therefore, by fitting the respective lines of this corrugated plate body together, it is possible to overlap them smoothly along the above-mentioned inclined side surface, and in the horizontal direction, each pitch of the mountain line or valley line is aligned, and in the vertical direction, it is possible to overlap each other smoothly. This allows joining while adjusting the length of each overlapping part steplessly.

In addition, a large number of long holes 2 having a width of about 2.5 mm and a length of 40 mm are drilled at equal intervals in the flat bottom surface of each valley in a form inclined to the direction of the groove. As shown in FIG. 1, these many long holes 2 are arranged symmetrically in the direction of the stripes and with respect to the two vertical and horizontal center lines X and Y of the plate, and No matter which direction the bodies 1, 1 are joined in the vertical or horizontal direction, the elongated holes 2, 2 of each plate body 1, 1 always overlap in an X shape.

Although not shown, long holes may be formed in both the top surface of the crest and the bottom surface of the trough.

Next, an example of constructing formwork using the concrete formwork plate formed in this way is shown in Figures 3 to 5.
To explain based on the figure, first, a large puller 4 is horizontally hung on an elastic (commonly called a support) 3, and the large puller 4 is
A bed of wood 5 is erected to form a foundation, and the concrete formwork plate 1 of the present invention is placed on it and nailed. (See Figure 3) This flooring work is almost the same as the well-known construction method using conventional plywood (conpane), so a more detailed explanation will be omitted.
The joining of each plate body 1 is performed as follows. That is, lateral joining is performed by overlapping the bottom surfaces 1a of the outermost valleys of the plate 1, but if the width of the mounting location is narrow, the valleys of the plate 1 are Use the required width. In addition, for joining in the vertical direction, the edges of the plate body 1 in the direction of the stripes are overlapped so that the valleys and peaks are aligned, and at least the long holes 2 located at the ends are overlapped in an X shape. Usually, several elongated holes are stacked one on top of the other in an X shape starting from the end. Also, the length in the vertical direction can be adjusted by 2 as described above.
This is done while sliding the two plates 1, 1 in the stacked state in the direction of the stripes.

Note that when joining in the lateral direction, a gap less than the pitch interval may occur, but in this case, it is sufficient to fill it with plywood or a special gap member. Further, although the above embodiment shows an example in which the plate 1 is placed on the Nedagi 5, the plate 1 may be placed directly on the slat 4 as shown in FIG.

Next, when using it for a wall, it is fixed with a fastener as in the past (see Figure 5), but as shown in Figure 1, a hole 2' for fastener insertion is pre-drilled. It is most convenient to leave it there. When used in the floor formwork, this fastener insertion hole 2' can be used as an insertion hole for a ceiling hanging member.

As described above, a plurality of plates 1 are joined vertically and horizontally, but the long holes 2, 2 of the two overlapping plates 1, 1 necessarily have different inclination directions, and the X
Since they intersect in a shape, a through hole 2a is formed at the intersecting portion. Therefore, the through hole 2a is used as a nail hole, and the nail 6 is driven from the side of the plate 1 to fix the plate 1 to the wood 5. (See FIG. 2) The present invention has the advantage that the plate 1 is less likely to shift because it is fixed by the nails 6 at the intersections of the long holes 2 inclined in different directions.

As mentioned above, the plate of the present invention has ridges and valleys, so the surface of the poured concrete is formed into an undulating surface with uneven stripes, but these uneven stripes can be buried by topcoating. Or, if the surface is covered with a decorative board, no problem will arise, and on the contrary, the uneven stripes can be actively used as a pattern.

Next, a modification of the present invention will be described. The dimensions, thickness, width of each striation, cross-sectional shape, number, pitch width, etc. of the plate according to the present invention can be changed in various ways depending on the purpose of use, and the metal material of the plate can be light metal, steel, etc. It is not a question of the material. Further, the size, inclination angle, pitch, etc. of the elongated hole can be changed as appropriate.

As described above, according to the present invention, even though the material is metal, nails can be directly nailed into wood such as Nedagi or Ohiki through the through hole, and the work is almost the same as that of conventionally used plywood. It becomes possible to form concrete forms. Moreover, since it is made of metal, it has excellent durability, corrosion resistance, and abrasion resistance, further increasing the number of times it can be used repeatedly. Furthermore, concrete is less likely to adhere to the surface of the plate, and repair work such as cutting and hole filling is not necessary when reusing the plate.

In addition, even if the area of the installation location is not an integral multiple of the dimensions of the plate, it can be freely overlapped vertically and horizontally to fit those dimensions, so it can be cut and processed to fit the dimensions like a conventional control panel. There is no need to do so, and the work is easy and economical. Furthermore, transportation,
In terms of storage, if the fibers are aligned and stacked together, the volume will be reduced to about 1/4 of a control panel, making it possible to transport and store a large amount at once, and requiring less space for material storage. .

Therefore, by using the formwork plate of the present invention in place of the conventionally used plywood panel, it becomes possible to significantly reduce the waste of wood resources, and also to improve the construction of formwork. It also saves administrative labor, so the benefits are great.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the plate for concrete formwork according to the present invention, Fig. 2 is an explanatory diagram showing the joined state of the plate, and Figs. 3 to 5 are explanations showing the construction method. It is a diagram. 1...Plate for concrete formwork, 1a...Bottom surface of valley line, 1b...Top surface of mountain line, 2...Long hole, 2'
... Fastener insertion hole, 2a ... Through hole, 3 ... Telescopic column, 4 ... Ohiki, 5 ... Nedagi, 6 ... Nail.

Claims (1)

[Claims for Utility Model Registration] (1) A polymerizable product formed by alternately arranging mountain lines with flat tops and valley lines with flat bottoms, and connecting each top and bottom surface with an inclined side surface. A corrugated metal plate body, wherein at least one of the top surface of the mountain streaks and the bottom face of the valley streaks has a large number of long holes inclined with respect to the axial direction, and a large number of long holes are formed in the plate body in the axial direction and A plate for concrete formwork characterized by being bored symmetrically in the left and right and up and down directions with respect to two vertical and horizontal center lines. (2) The plate for concrete formwork according to claim 1 or 2 of the utility model registration claim, wherein the ridges and valleys have the same cross-sectional shape.