JP2739886B2 - Formwork equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork device used for a legal formwork or the like.

[0002]

2. Description of the Related Art For example, Japanese Patent Publication No. Sho 53-3
Japanese Patent Application Publication No. 2166 discloses a technique using a wire mesh.

[0003]

The above wire mesh is weak in strength, may be deformed by the pressure of cast concrete, and has poor workability.

[0004] In addition, a generally used plate form has a problem in the quality of cast concrete because of blowing air and rebound of concrete.

An object of the present invention is to provide a formwork apparatus which prevents entrainment of air and rebound of concrete and improves workability.

[0006]

According to the present invention, there is provided a punching metal which is vertically arranged opposite to each other and has a plurality of engaging portions projecting from a plurality of opposed portions, and both ends of which are engaged with the engaging portions. In a formwork device provided with a spacing material for holding the both punching metals at a predetermined spacing and an anchoring bar for fixing the spacing material to the ground, a plurality of horizontal ribs and a plurality of vertical ribs for reinforcement are provided on the punching metal. The ribs protrude and are provided alternately on both sides of the punched metal.

Further, according to the present invention, the vertical ribs are alternately provided on both sides of the punching metal.

According to the present invention, the connecting members are connected to each other, the spacing members are provided vertically, the upper spacing members are hooked downward by the hooks, and the lower spacing members are held upward. It is hooked on the hook.

[0009]

In the formwork device constructed as described above,
The perforated metal allows blown air to escape and prevents concrete from rebounding.

Further, the punching metal itself is strong and lightweight, and therefore has good workability.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4, a punching metal 1 has a height H of, for example, 300 mm and a length L of, for example, 1 mm.
It is formed to 700 mm. The punching metal 1
Has a horizontal pitch P1 of 50 mm, for example, and a vertical pitch P
2 are, for example, 19.3 mm, a plurality of long holes 3 having a laterally long length A, for example, 44 mm, and a height B, for example, 13 mm, are formed by punching. The long holes 4 in the fourth row from the upper and lower sides are formed to be short so that the length A1 is, for example, 36 mm and the sides corresponding to each other are cut off. Therefore, in the illustrated example, the aperture ratio is 60%,
Area is within the mortar runoff limit.

In the punching metal 1, horizontal ribs 5 are provided on every other side between the long holes 3 in the height direction.
6 are protrudingly provided. In the longitudinal direction of each long hole 3, between the top and bottom, and up to the fourth and sixth horizontal ribs 6, vertical ribs 7 and 8 are provided on opposite sides. Have been. 4, the horizontal ribs 5, 6 and the vertical ribs 7, 8 are provided on both sides of the punching metal 1 alternately.

A triangular hook 9 projecting in one direction protrudes between the long holes 4, 4, and the hook 9 has a distance D having a diameter D of, for example, 4.5 mm. A bent portion 11 bent at a right angle to the material 10 (FIG. 5) is inserted.

Next, referring to FIG. 5, an embodiment of the construction of the legal frame will be described.

At the time of the construction, as shown in FIG. Next, the two bent portions 11, 11 of the spacing member 10 having a predetermined length are inserted into the upper and lower hooking portions 9, 9 of the punching metals 1, 1, and the both punching metals 1, 1 are held at the predetermined interval C. .

Next, the middle of the spacing members 10 and 10 is
The anchor is connected to the anchor bar 12 inserted into the ground and is fixed to the ground G, and the setting of the formwork device is completed.

Therefore, concrete is sprayed between the punching metals 1 and 1 by a spraying machine (not shown). At this time, the concrete is prevented from flowing from the slots 3 and 4. Further, the blown compressed air is released from the slots 3 and 4 and the rebound of the concrete is prevented, so that the finish quality of the concrete is improved. In addition, since the punching metal 1 is reinforced by the ribs 5 to 8, it has sufficient strength and is not deformed by the pressure of the cast concrete. Further, since the punching metal 1 is a lightweight flat plate, it is easy to handle and the workability is improved.

FIG. 6 shows another embodiment of the present invention. The upper spacing member 10a and the lower spacing member 10b are connected to each other by welding connecting members 10c and 10d. The spacing member 10b is engaged with the hook 9 from below. At the time of assembling, the two bent portions 11, 11 are expanded and inserted into the hook portions 9. And the connecting members 10c and 10d
Plays a role of positioning the main weight R.

The upper spacing member 10a may be engaged with the hook 9 downward and the lower spacing member 10b may be engaged with the hook 9 upward.

As described above, the upper and lower spacing members 10a, 10a
If the directions of the bent portions 11 of b are reversed, no force is applied during concrete placing or assembling work, and the bent portions 11 do not come off from the hook portions 9.

[0022]

According to the present invention, since the present invention is configured as described above, the quality of cast concrete can be improved by preventing air entrapment and concrete rebound, and the workability can be improved. be able to.

[Brief description of the drawings]

FIG. 1 is a front view showing a punched metal according to one embodiment of the present invention.

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is an enlarged view of an upper half of a side surface of FIG. 1;

FIG. 5 is a side view at the time of construction showing one embodiment of the present invention.

FIG. 6 is a side view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Punched metal 3, 4 ... Long hole 5, 6 ... Horizontal rib 7, 8 ... Vertical rib 9 ... Hook part 10 ... Spacing material 11 ... Bending part 12 ... anchor muscle

Claims (3)

(57) [Claims] 1. A punching metal which is vertically opposed to each other and has a plurality of engaging portions protruding therefrom, and both end portions of which are engaged with the engaging portions to hold the both punching metals at a predetermined interval. In a formwork device provided with a spacing material and an anchoring line for fixing the spacing material to the ground, a plurality of reinforcing horizontal ribs and a plurality of vertical ribs are protruded from the punching metal, and the horizontal ribs are alternately arranged. Characterized by being provided on both sides of a punching metal. 2. The formwork device according to claim 1, wherein the vertical ribs are alternately provided on both sides of the punched metal. 3. A spacing member connected by a connecting member is provided up and down, an upper spacing member is hooked downward by a hook, and a lower spacing member is hooked upward by a hook. The formwork device according to claim 1, wherein the formwork device is stopped.