JPH1046806A - Formwork panel for concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a concrete finish surface having less conspicuous seams and to reduce the weight of a formwork panel. SOLUTION: A formwork panel 11 comprises a plate-shaped outer frame 15 at the periphery, reinforcing ribs 17 and 18 provided inside the outer frame 15, a plurality of face plate receivers 19 fixed at intervals in the outer frame periphery direction on the inner surface of the outer frame 15, and a face plate such as plastic plate fixed to the top of the face plate receiver 19. The face plate 19 has a sloped surface connected to the upper end edge of the outer frame 15 and a flat surface connected to this sloped surface. The face plate 13 has a sloped end edge 13a along the sloped surface of the face plate receiver 19 along the periphery. The face plate 13 can be made with a plastic material, thereby reducing the weight of the formwork panel 11. At the boundary portion of adjacent formwork panels 11, the face plates 13 are directly contacted in such a manner that the tip ends of acute angle of the sloped end faces 13a of the face plate 13 are directly contacted each other in a form of sticking each other, so that a neat concrete finish surface with the least conspicuous seams can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete form panel for forming a concrete form when constructing a concrete structure.

[0002]

2. Description of the Related Art As shown in FIG. 9, a conventional concrete formwork panel made of steel has, for example, an outer frame 2 around a rectangular face plate 1 and a grid inside the outer frame 2. This is a configuration in which reinforcing ribs 3 and 4 are provided, and all are made of a steel plate. And adjacent concrete formwork panels (hereinafter,
As shown in FIG. 10 (a), the connection between the outer frames 2 is performed by clamping the outer frames 2 with a clamp 6 'passing through a connection hole 2a formed in the outer frame 2. This type of formwork panel 5 commonly called metal foam
Is high in strength, can be used repeatedly, is standardized, has high versatility and can be adopted in many cases. It is easy to join adjacent form panels 5 using clamps 6 ', and formwork is performed. It has various advantages such as good workability and is widely used.

[0003]

However, although the above conventional form panel 5 is made lighter, it is still made of a steel plate, so that it is slightly heavy and burdens the operator, and further reduction in weight is desired. . When a concrete formwork is formed by combining a plurality of formwork panels 5, the boundary between adjacent formwork panels 5 is formed in such a manner that two outer frames 2 are superimposed as shown in FIG. Or Figure 10 (b)
Since the right-angled end faces of the face plate 1 having a certain thickness are abutted and not a single plane, when the concrete is removed after casting, this boundary portion is easily conspicuous as joints.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and is intended to further reduce the weight of a concrete form panel and to obtain a concrete finished surface with less conspicuous joints. The purpose is to provide.

[0005]

A concrete formwork panel according to the present invention for solving the above-mentioned problems comprises a peripheral plate-like outer frame,
A plurality of reinforcing ribs provided in the outer frame, an inclined surface fixed to the inner surface of the outer frame at intervals in a circumferential direction of the outer frame, the inclined surface being connected to an upper edge of the outer frame, and a flat surface being connected to the inclined surface; And a wood or resin face plate having an inclined edge along the inclined surface of the face plate resting on the face plate receiver, and fixing means for fixing the face plate to the face plate receiver. It is characterized by having.

According to a second aspect of the present invention, the face plate receiver of the outer frame according to the first aspect is attached so as to be out of the position of the connection hole provided in the outer frame.

A third aspect of the present invention is characterized in that the upper edge of the outer frame according to the first or second aspect is chamfered so as to be flush with the inclined surface of the face plate receiver.

According to a fourth aspect of the present invention, a small-sized plate-shaped inner frame similar to the outer frame is provided inside the outer frame according to the first or second aspect, and the inner frame and the outer frame are supported by the face plate receiver. It is characterized in that it is integrally connected and a reinforcing rib is provided inside the inner frame.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to an embodiment shown in FIG. FIG. 1 is an exploded perspective view of a concrete form panel (hereinafter, simply referred to as a form panel) 11 according to an embodiment of the present invention. As shown in the figure, the form panel 11 is composed of, for example, a frame 12 made of steel and a face plate 13 made of resin.

As shown in the plan view of FIG. 2A and the front view of FIG. 2B, the frame 12 has a rectangular plate-shaped outer frame 15 and a An inner frame 16 having a slightly smaller rectangular plate-like cross section and a reinforcing ribs 17 and 18 provided in a lattice shape in the inner frame 16 are spaced from each other in the circumferential direction of the outer frame 15. And a face plate receiver 19 integrally connecting the outer frame 15 and the inner frame 16 at a plurality of locations.

As shown in FIG. 3, the face plate receiver 19 has, for example, an inclined surface 19a inclined downward at an angle of 45 ° and a flat surface 19b connected to the lower end of the inclined surface 19a. It is arranged between the frame 16 and both
6 are welded and fixed, so that the two parts 15 and 16 are integrally connected. Further, a mounting hole 19c for inserting a screw 20 for mounting the face plate 13 is formed. The upper end surface of the outer frame 15 is formed as an inclined surface 15a chamfered at the same angle of 45 ° so as to be flush with the inclined surface 19a of the face plate receiver 19.

The face plate 13 has a 45 ° inclined end face 1 along the inclined faces 19a, 15a of the face plate receiver 19 and the outer frame 15.
3a is provided on the periphery. The face plate 13 in the illustrated example has a structure in which, for example, a foamed polypropylene 13b having a foaming ratio of 20 times is covered with a polypropylene sheet 13c.

The outer frame 15 is provided at a plurality of positions separated from the face plate receiver 19 and spaced apart in the circumferential direction.
A connection hole 15b into which the clamp 6 shown in FIG. 6 is inserted is provided. This clamp 6 has the same structure as the clamp 6 'of FIG. 10 used for the conventional general steel form panel 5 shown in FIG. 9, and is also shown in a perspective view in FIG. And a pin portion 16a inserted into the connection hole 15b.
And an arm portion 16c connecting the pin portion 16a and the clamp portion 16b, and each of the portions 16a, 16b, 16c has a structure parallel to each of the three orthogonal axes.

The reinforcing ribs 17 in the vertical direction have a T-shaped cross section as shown in FIG. 4, and are provided with mounting holes 17a for inserting screws 20 for mounting the face plate 13 at a plurality of positions.
Is fixed to the inner surface of the short side by welding. Lateral reinforcing rib 1
8 has a simple plate-shaped cross section as shown in FIG.
6 and the vertical reinforcing ribs 17 are fixed by welding.

The above-mentioned face plate 13 is provided with a peripheral inclined end face 1.
3a is an inclined surface 19a, 1 of the face plate receiver 19 and the outer frame 15.
5a so as to come into contact with the frame 12 and
0 is the mounting hole 19 of the face plate receiver 19 or the reinforcing rib 17.
b, 17a and screwed into the face plate 13,
It is fixed to the frame 12 side.

In the concrete formwork using the formwork panel 11, the connection of the adjacent formwork panels 11 is performed as shown in FIGS. That is, the outer frames 15 of the adjacent form panels 11 are overlapped and connected by the clamp 6 at each connection hole 15b. In this case, the pin 6a is connected to the connecting hole 1 with the arm 6c of the clamp 6 being vertical as shown by a two-dot chain line in FIG.
5b, and turn it upward by 90 ° as shown by the arrow to clamp the two outer frames 15 with the clamp portion 6b (the state shown by the solid line). In this way, the outer frames 15 can be connected with one touch, so to speak.

In the connection of the outer frames 15 by the clamp 6, in order for the clamp portion 6 b to firmly clamp the two outer frames 15, the distance from the connecting hole 15 b to the lower edge (FIG. H dimension) is required. Therefore, if the face plate receiver 19 is temporarily
5 is formed continuously around the entire circumference of the face plate receiver 19.
Interferes with the clamp 6, so that a connecting means using this kind of clamp 6 cannot be adopted. However, in the present invention, since the face plate receivers 19 are provided at intervals in the circumferential direction of the outer frame 15, the face plate receivers 19 do not interfere with the clamps 6, so that a space for the clamps 6 can be secured, and this type of It is possible to employ a connecting means using the clamp 6. Further, since the face plate 13 is made of resin and has a larger thickness dimension than the case of a steel plate, the face plate 13 itself may interfere with the clamp 6, but the peripheral edge of the face plate 13 has an inclined end surface. 13a, interference with the clamp 6 can be avoided. Therefore, as described above, the conventional steel formwork panel 5 shown in FIG.
The same clamp 6 as the clamp 6 ′ can be used, and the form panel 11 of the present invention can be used together with the conventional general form panel 5 in the formwork.
FIG. 8 shows a connection state between the form panel 11 of the present invention and the conventional form panel 5 when used together.

The form panel 11 is lightweight because the face plate 13 is made of resin, is easy to carry and hold, and improves the workability of form work. Further, although polypropylene is used for the face plate 13 in the embodiment, concrete adhesion to the surface of the face plate 13 is small due to its surface properties.
Therefore, the finished surface of the concrete becomes clean. In addition, it is not necessary to use a release agent at the time of placing concrete. Further, it is easy to wash the form panel 11 used repeatedly after use.

Further, as shown in FIG. 6, the boundary between the adjacent form panels 11 is in direct contact with each other in such a manner that the sharp edges of the inclined edges 13a of the face plate 13 abut each other. An almost continuous plane with very few gaps can be obtained, and a clean concrete finished surface with less noticeable joints can be obtained.

In the embodiment, the inner frame 1 is provided inside the outer frame 15.
6, but without the inner frame 16, the reinforcing ribs 17,
18 may be directly welded and fixed to the outer frame 15.
Further, in the embodiment, the face plate 13 is provided with the face plate receiver 19 and the reinforcing rib 1.
7 is fixed by screws 20, but may be fixed by bonding with an adhesive. In the embodiment, the face plate receiver 19 is attached to the outer frame 15.
Are provided on all four sides, but it is also conceivable to provide them on only two sides such as the long side. Also, the reinforcing ribs 17 and 1
The sectional shape of 8 and its arrangement are not limited to those of the embodiment. In addition, as a means for connecting the outer frames 15 to each other, it is naturally possible to use something other than the clamp fitting 6 in the illustrated example. Further, in the embodiment, the inclined edge 15a is formed by chamfering the upper edge of the outer frame 15, but this does not exclude leaving the right angled end face without chamfering. Further, the face plate is not limited to foamed polypropylene, and other resins can be used. Further, wood such as plywood can be used. Further, the outer frame 15, the reinforcing ribs 17, 18 and the face plate receiver 19 of the frame body 12 are not limited to steel, but other metals such as aluminum can be used, and furthermore, resin can be used. Further, the outer frame 15 of the form panel 11 is usually rectangular as in the embodiment, but it can be applied to anything other than rectangular.

[0021]

According to the concrete formwork panel of the present invention, since wood or resin is used for the face plate, the formwork panel can be reduced in weight, can be easily carried and held, and the formwork can be carried out. Workability is improved. In particular, when a resin face plate is used, there is little concrete adhesion to the face plate surface due to the surface properties of the resin, so that the finished surface of the concrete is clean, and the use of a release agent when concrete is poured. Is unnecessary, and washing after use of the form panel repeatedly used becomes easy. Also,
The faceplate can be easily replaced if damaged.

Since the face plate receivers are not formed continuously around the entire outer frame but are provided at intervals, a space for connecting outer frames of adjacent form panels with each other by using a clamp is provided. Easy to secure. Therefore, it can be connected with the same clamp metal as a so-called metal form, a form panel made entirely of a steel plate consisting of a simple outer frame, a reinforcing rib, and a face plate, and can be used together with a metal form.

According to the third aspect, at the boundary between the adjacent form panels, regarding the surface to be the finished concrete surface, the outer frames are not in contact with each other, but the acute angle of the inclined edge of the face plate is not determined. Since the tips are in direct contact with each other in abutting relationship, a clean concrete surface with less visible joints can be obtained.

According to the fourth aspect, the inner frame functions as a structure for providing the face plate receiver, functions as reinforcement of the entire form panel, and supports the vicinity of the outer periphery of the face plate to have a low rigidity. Since it has a multifaceted function of reinforcing concrete, it is extremely efficient as a concrete formwork panel structure.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a concrete formwork panel according to one embodiment of the present invention.

FIG. 2 is a plan view of a concrete formwork panel according to an embodiment of the present invention, in which a face plate is removed, and FIG.
(B) is a front view.

FIG. 3 is an enlarged sectional view taken along the line AA in FIG. 2;

FIG. 4 is an enlarged sectional view taken along line BB in FIG. 2;

FIG. 5 is an enlarged sectional view taken along the line CC in FIG. 2;

FIG. 6 is a cross-sectional view showing a state where outer frames of adjacent concrete form panels are connected to each other with clamps.

FIG. 7 is a perspective view showing the state of FIG. 6, excluding the face plate.

FIG. 8 shows an example in which the concrete form panel of the present invention is used in combination with a so-called metal foam, and shows a state where the outer frame of the concrete form panel of the present invention and the outer form of the metal form are connected by a clamp. It is sectional drawing.

FIG. 9 is a perspective view showing an example of a conventional concrete form panel.

FIG. 10 is a schematic cross-sectional view for explaining a problem in a conventional concrete form panel, showing a boundary portion between adjacent concrete form panels, wherein (a) and (b) show different examples.

[Explanation of symbols]

 Reference Signs List 6 clamp fitting 11 formwork panel (concrete formwork panel) 12 frame 13 face plate 13a inclined end face 13b foamed polypropylene 13c polypropylene sheet 15 outer frame 15a inclined surface of upper end edge 15b connection hole 16 inner frame 17, 18 reinforcing rib 19 face plate receiver 19a Inclined surface 19b Flat surface 19c Mounting hole 20 Screw

Claims (4)

[Claims] 1. A peripheral plate-shaped outer frame, reinforcing ribs provided in the outer frame, and an upper end edge of the outer frame fixed to an inner surface of the outer frame at an interval in a circumferential direction of the outer frame. A plurality of face plates having an inclined surface connected thereto and a flat surface connected to the inclined surface, and a wood or resin face plate mounted on the surface plate receiver and having a peripheral edge along the inclined surface of the face plate receiver, Fixing means for fixing the face plate to the face plate receiver. 2. The concrete formwork panel according to claim 1, wherein the face plate receiver of the outer frame is attached so as to be out of a position of a connection hole provided in the outer frame. 3. An outer frame having an upper edge chamfered so as to be flush with an inclined surface of a face plate receiver.
Or a concrete formwork panel as described. 4. A small-sized plate-like inner frame similar to the outer frame is provided inside the outer frame, and the inner frame and the outer frame are integrally connected by the face plate receiver. The concrete form panel according to claim 1 or 2, wherein a reinforcing rib is provided inside.