JPH11323973A - Face plate for porous permanent form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a face plate for a porous permanent form forming a large number of hole opening parts so that air and surplus water can flow out at concrete placing time and having largely strengthened rigidity as the face plate. SOLUTION: A large number of hole opening parts 6 are formed simultaneously when forming a large number of upward cut ribs 5 or extruded ribs over the whole on a face plate 1, rigidity of the face plate 1 is strengthened by forming these ribs 5, and surplus water and air at concrete placing time can be discharged through a large number of hole opening parts 6. The excessive outflow of concrete lime white can be restrained by forming the ribs 5 so that the hole opening parts 6 are opened outward and upward. Rigidity as the face plate can be more effectively strengthened by dislocating/forming a pitch of the ribs 5 of the vertically adjacently formed respective stages. The face plate 1 is defined into plural divisions by projecting strip ribs, and can be reinforced further.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a face plate for a formwork used when constructing a concrete structure such as a retaining wall or a sabo dam. More specifically, it has many openings,
The present invention relates to a face plate suitable for a formwork of a perforated formwork system which is left as it is without being removed after placing concrete.

[0002]

2. Description of the Related Art Concrete structures such as retaining walls and sabo dams are often constructed in mountainous areas, which imposes a heavy burden on transporting materials and picking up workers. And, as the conventional formwork, a plywood formwork or a metal panel-like formwork is used. After the concrete is cast and cured, the formwork is dismantled and removed. It had been. For this reason, after the concrete is poured, not only does it need to transfer workers to the site in a mountainous area or the like in order to dismantle and remove the formwork, but the work of dismantling the formwork itself requires a large work load. Since the transportation of the dismantled formwork also requires considerable transportation costs, the dismantling and removal work of the formwork has contributed to an increase in construction costs. Although buried formwork using wire mesh is known as a formwork for the foundation of a building, there is a problem in terms of workability due to the low rigidity and the need for many thick ends for reinforcement. there were. In addition, since a part of the concrete easily flows out through the mesh at the time of casting,
There was a problem in work such as being restricted by the possible driving height at a time.

[0003]

SUMMARY OF THE INVENTION The present invention has been developed in view of the above-mentioned conventional technical circumstances, and an object of the present invention is to discharge air or surplus water during casting of concrete or the like. Another object of the present invention is to provide a face plate for a perforated formwork in which a large number of apertures are formed so that the rigidity of the face plate can be greatly enhanced.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a large number of cut-and-raised ribs or extruded ribs are formed on a plate as a whole, and a large number of openings are formed at the same time. The technical means is adopted in which the rigidity of the face plate is strengthened by forming ribs, and excess water, air and the like at the time of placing concrete or the like can be discharged through a large number of openings. If the ribs are formed so that the opening portions are opened upward toward the outside, excessive outflow of concrete swarf and the like during casting can be suppressed. Also, if the pitch of the ribs of each step formed vertically adjacent to each other is shifted, the rigidity of the face plate can be more effectively enhanced. Furthermore, the rigidity can be further enhanced if the face plate is defined into a plurality of sections by the convex ribs for reinforcement.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A face plate according to the present invention is suitable for use as a formwork for concrete structures installed in mountainous areas such as retaining walls and sabo dams. It can be widely applied as long as it is a disposable formwork system that leaves without dismantling. This face plate is made of a plate material that has been subjected to rust-prevention treatment such as hot-dip galvanizing with a large coating thickness. By forming cut-and-raised ribs or extruded ribs by pressing, etc., the rigidity of the face plate is greatly enhanced. ing. The cuts for forming the ribs may be formed in advance, or may be cut at the same time when the ribs are formed or extruded. In addition, the present face plate can be applied in a form in which the face plate is left buried in concrete, or in a state in which the surface side is left exposed. In the case of the form in which the front side is left exposed to the outside, the appearance is changed by the unevenness due to the ribs formed on the face plate, and plants such as moss and ivy tend to grow. So the landscape can be improved. Further, in this case, if the opening is formed upward and outward, the soil easily accumulates, which is suitable for the growth of the plant.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view illustrating the overall shape of a face plate according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view thereof. FIGS. 3 and 4 are perspective views showing a modification of the overall shape of the face plate. As shown in the drawing, the face plate 1 shown in FIGS. 1 and 3 is defined by a plurality of face plate portions 4 by reinforcing ribs 2 and 3 which are formed vertically and horizontally at appropriate intervals. However, the face plate portion 4 is different in that the face plate portion 1 in FIG. 1 is formed so as to be shifted between the respective steps, whereas the face plate portion 4 in FIG. FIG.
The face plate 1 is reinforced by using only the ribs 3 in the horizontal direction, and the face plate portion 4 is formed between the ribs 3. In the present invention, cut-and-raised ribs or extruded ribs are formed on the entire face plate portion 4 formed on the face plate 1 as described later, which is characterized in that point. . 5 to 12 show enlarged examples of the ribs, in which (A) shows a partially enlarged front view, and (B) shows a longitudinal section thereof. It is shown.

In the embodiment shown in FIG. 5, a large number of cut-and-raised ribs 5 are formed at the same time by forming cuts in the upper side and both side sides of each rib forming portion with respect to the face plate 1 and raising them obliquely upward. The opening 6 is formed after the cutting and raising. Therefore, the opening 6 is opened upward toward the outside. Further, as shown, in the present embodiment, the cut-and-raised ribs 5 of each stage formed vertically adjacent to each other are formed so as to be shifted by a half pitch. The cut-and-raised ribs 5 are formed on the face plate 1 as a whole, but when the protruding ribs 2 and 3 are formed as shown in FIGS. To be formed entirely. This is the same in the following embodiments. As a result, the rigidity of the face plate 1 is greatly enhanced by the cut and raised ribs 5.

In the embodiment shown in FIG. 6, cuts are made horizontally on both sides of each rib forming portion and the center in the vertical direction with respect to the face plate 7, and as shown in FIG. The raised ribs 8 and 9 are formed by raising the opening, and the opening 10 is formed thereafter. The cut-and-raised ribs 8 and 9 of each stage formed vertically above and below are shifted by a half pitch. In the present embodiment, the cut-and-raised ribs 8 and 9 are formed obliquely, but may be formed in a horizontal direction.

The embodiment shown in FIG. 7 is different from the embodiment shown in FIG. 1 in that, as shown in FIG. 12 and 13 are formed, and thereafter, an opening 14 is formed. At the top of each of the ribs 12 and 13, a folded portion is formed as shown in FIG. The embodiment shown in FIG. 8 is a modification of the above embodiment, in which rising portions 15 and 16 are added from the bottom side.

In the embodiment shown in FIG. 9, cuts are made in the face plate 17 along the upper side and the lower side of each rib forming portion, and the central portion is pushed outward to push out a trapezoidal pushing rib 18.
Is formed, and both sides of the extrusion rib 18 are further bent downward as shown in (B) so that the opening 19 formed after the extrusion rib 18 is opened obliquely upward. I have. As shown in the drawing, also in this embodiment, the extrusion ribs 18 of each stage formed vertically adjacent to each other are formed by being shifted by a half pitch. The embodiment shown in FIG. 10 is a modification of the above embodiment, in which an arc-shaped extrusion rib 20 is formed instead of a trapezoid.

In the embodiment shown in FIG. 11, a cut is made in the face plate 21 along the upper side of each rib forming portion and the lower side shorter than the upper side, and the respective central portions are bent downward while being pushed outward. As a result, or by further plastically deforming the face plate 21 itself in the vertical direction, as shown in FIG.
2 is formed. Also in this case, an opening 23 facing upward is formed after the extrusion rib 22. Similarly, the rigidity of the face plate 21 is greatly enhanced by the extrusion ribs 22.

In the embodiment shown in FIG. 12, a truncated cone-shaped extruded rib 25 is formed on a face plate 24 by press working or the like, and an opening 26 is formed at the center thereof. Note that, also in the present embodiment, a folded portion is formed at the peripheral edge of the distal end of the extrusion rib 25. Further, the extrusion ribs 25 of each stage formed vertically adjacent to each other are formed so as to be shifted by a half pitch.

[0013]

According to the present invention, the following effects can be obtained. (1) The rigidity of the face plate as the face plate is greatly enhanced by the cut-and-raised ribs or the extruded ribs, and the handling thereof is greatly simplified, so that the assembling and forming work of the mold is greatly improved. (2) By enhancing the rigidity by the cut-and-raised ribs or the extruded ribs, it is possible to reduce or omit the thick material for holding the form, and the workability can be greatly improved. (3) If the ribs are formed so that the opening portions are opened upward toward the outside, it is possible to suppress excessive outflow of concrete swarf or the like during casting. Further, when the surface of the main board is left exposed after the casting, soil is easily accumulated in the opening, which is suitable for the growth of plants such as moss and ivy. (4) By shifting the pitches of the ribs formed adjacent to each other vertically, the rigidity of the face plate can be more effectively enhanced. (5) The rigidity of the face plate can be further enhanced if the face plate is defined into a plurality of sections by reinforcing ribs for reinforcement.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall shape of a face plate according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a perspective view showing a modification of the overall shape of the face plate.

FIG. 4 is a perspective view showing another modified example of the overall shape of the same plate.

FIG. 5 is a partially enlarged view showing a front surface and a longitudinal section of the embodiment of the present invention.

FIG. 6 is a partially enlarged view showing a front and a longitudinal section of another embodiment.

FIG. 7 is a partially enlarged view showing a front and a longitudinal section of another embodiment.

FIG. 8 is a partially enlarged view showing the front and vertical cross sections of another embodiment.

FIG. 9 is a partially enlarged view showing the front and vertical cross sections of another embodiment.

FIG. 10 is a partially enlarged view showing the front and vertical cross sections of another embodiment.

FIG. 11 is a partially enlarged view showing a front and a longitudinal section of another embodiment.

FIG. 12 is a partially enlarged view showing a front and a longitudinal section of another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Face plate, 2, 3 ... Convex rib, 4 ... Plate surface part, 5 ... Cut and raised rib, 6 ... Opening part, 7 ... Face plate, 8, 9 ... Cut and raised rib, 10 ...
Opening part, 11 ... face plate, 12, 13 ... cut and raised rib, 14 ... opening part, 15, 16 ... rising part, 17 ... face plate, 18 ... extrusion rib, 19 ... opening part, 20 ... extrusion rib, 21 … Face plate,
Reference numeral 22: extrusion rib, 23: opening, 24: face plate, 25: extrusion rib, 26: opening

Claims (5)

[Claims] 1. A large number of cut-and-raised ribs are formed on a plate material, and a large number of openings are formed at the same time. A face plate for a perforated formwork, characterized in that surplus water, air and the like at the time of casting are discharged. 2. A large number of extruded ribs are formed in a plate material and a large number of openings are formed at the same time. The rigidity of the face plate is strengthened by the formation of the extruded ribs. A face plate for a perforated formwork, characterized in that surplus water, air and the like at the time of installation can be discharged. 3. A rib is formed so that the opening is open upward toward the outside.
Or the face plate for a perforated formwork according to 2. 4. The face plate for a perforated formwork according to claim 1, wherein the ribs of the respective steps formed vertically adjacent to each other are formed with a mutually shifted pitch. . 5. The face plate according to any one of claims 1 to 4, wherein the face plate is defined by a plurality of sections by reinforcing ribs for reinforcement.