JPH089910B2 - Formwork panel fixing structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a form panel fixing structure .

[0002]

2. Description of the Related Art Formwork panels made of plywood (generally called control panels) in foundation work and wall work.
Are arranged side by side flush with each other at a predetermined position, a concrete formwork is assembled at a construction site, and concrete is poured into the formwork to construct a structure.

However, in a formwork using a control panel, it is necessary to remove the control panel from the structure after the concrete is hardened, so that there is a problem that the construction work on site is largely required. In addition, there is a growing voice that it is not desirable to consume a large amount of control panels made of plywood in construction work and civil engineering work from the viewpoint of environmental problems such as forest conservation.

Therefore, in order to shorten the construction period and save wood resources, there is a case where a keystone plate formed by bending a sheet metal member into a square corrugation is used as a concrete discard formwork.

[0005]

On the other hand, a computer made of plywood
When constructing the formwork from the panel, separate holes formed in the control panel
The separator in the axial direction of the separator
Abut the stopper provided in the middle on the back of the control panel,
If you connect a foam tie to the protruding end of this separator
Strike together to penetrate the middle part of this foam tie.
Use a wedge member to insert the square timber that is in contact with the surface of the control panel.
By pressing the separator to the control panel,
It is fixed to.

However, such a fixing structure is provided with the above-mentioned wave.
When driving a wedge member when adopting a shape-shaped form panel
With the reaction force of
Since it is pressed by the
The formwork panel may be deformed by a large force.
This is especially true when the tip of the foam tie is
Notable when touching the crest of the flannel (rib 3 in Fig. 2)
Yes.

In addition, such deformation of the formwork panel is prevented.
To increase the thickness of the panel, increase the strength of the panel itself.
The formwork used as a discard formwork
To increase the thickness of the panel is very uneconomical. In view of such an actual situation, the present invention is made of metal having a corrugated cross section.
The formwork panel of is used as a separator by driving a wedge member.
Even if the conventional fixing method of fixing is adopted,
It is an object of the present invention to provide a fixing structure for a formwork panel that can prevent deformation .

[0008]

[Means for Solving the Problems] In order to achieve the above object,
The technical means taken by the present invention is that the metal plate body is bent in a corrugated shape.
A mold having rib portions 3 and groove portions 4 alternately formed by forming
The groove portion 4 on the front surface side of the frame panel 1 is opened outside the formwork.
And place it in the separating hole 5 provided in the formwork panel 1.
When the data 14 is inserted from the inside of the mold toward the outside of the mold,
A stopper provided in the middle part of the separator 14 in the axial direction
21 is brought into contact with the back surface of the formwork panel 1, and the separator
While connecting the foam tie 16 to the protruding end of 14,
The square timber 12 placed on the foam tie 16 is used as a formwork panel.
Abut the surface of No. 1 and penetrate the middle of the foam tie 16
The same form tie 16 is formed by the wedge member 23 that is driven in
Push the square bar 12 to the formwork panel 1 side while pulling it to the outside of the frame.
By pressing, the separator 14 is fixed to the formwork panel 1.
The fixed structure of the formwork panel,
Separator inserted in the separation hole 5 formed in the groove portion 4
Cross-sectional shape that fits exactly into the groove portion 4 at the protruding end portion of 14.
Spacer 15, which is a Jo is interposed, the spacer 15
End of the separator 14 further protruding from the mold
The tip of the foam tie 16 connected to the spacer is the spacer.
15 is in contact with .

[0009]

Operation: The wedge member 23 penetrates the middle part of the foam tie 16.
The foam tie 16 will be
The timber 12 pulls the formwork panel 1
The stopper 21 provided in the axially intermediate portion of the separator 14
When pressed, the formwork panel 1 is placed at a predetermined position in the axial direction of the separator 14.
Fixed in place.

In this case, according to the present invention, the cell provided in the groove 4 is
A spacer is attached to the protruding end of the separator 14 inserted into the hole 5.
15 is interposed, and the spacer 15 is exactly in the groove portion 4.
Since it has a cross-sectional shape that fits, this spacer 15
Even if pressure is applied from the tip of the foam tie 16,
The pressing force of is distributed and transmitted to the form panel 1.
Become.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 and 2 show a formwork panel 1 used in this embodiment, which is composed of a panel body 2 made of sheet metal which is electroplated. The panel body 2 is bent and formed in a waveform having a substantially sine curve shape, whereby rib portions 3 and groove portions 4 extending in the vertical direction are alternately formed in the width direction on the front surface side of the panel body 2. There is.

In the groove portion 4 of the panel body 2, a large number of drainage holes 5 for discharging excess concrete water to the outside of the formwork.
Is provided. The drain holes 5 have a size that allows a separator 14 to be described later to be inserted therethrough, and are arranged at the bottom of each groove 4 at regular intervals in the vertical direction.
The drain hole 5 is not limited to the simple circular shape shown in FIG. 1, but may be a long hole extending in the vertical direction. When the drainage hole 5 is a long hole in this way, it is possible to ensure dehydration of excess water of concrete even when the separator 14 is inserted into the drainage hole 5 and to finely adjust the vertical position of the separator 14. .

A large number of reinforcing ribs 6 are provided in the groove portion 4 of the panel body 2. The reinforcing rib 6 has a substantially horizontally long elliptical shape and is formed by bulging the bottom of the groove portion 4 toward the front surface side of the panel body 2. The reinforcing ribs 6 are arranged in the groove portions 4 at regular intervals in the vertical direction. ing. In this embodiment, the panel body 2 has a thickness of about 0.4 mm,
Pitch between rib portions 3 (also pitch between groove portions 4) p
Is about 3 cm, and the height of the rib 3 (depth of the groove 4) h is about 5
Although it is set to mm, these values can be appropriately changed within a range that can withstand the surface pressure received from concrete. However, the thickness of the panel body 2 is preferably 0.4 to 0.8 mm in order to prevent the weight from becoming too large.

In this embodiment, the height pitch L1 of the drain holes 5 is 20 cm, and the height pitch L2 of the reinforcing ribs 6 is 5c.
It is set to m so that the reinforcing rib 6 functions as a mark for the height dimension. At the lower end of the panel body 2, a mounting plate 7 for mounting the formwork panel 1 on the concrete 11 is disposed integrally. The mounting plate 7 is formed by bending the lower end portion of the panel body 2 toward the front surface side by 90 degrees, and the rib portion 8 and the groove portion which respectively correspond to the rib portion 3 and the groove portion 4 on the panel body 2 side. 9
And are alternately provided in the width direction.

FIGS. 3 to 6 show an example of construction when the formwork panel 1 is adopted as a waste formwork 10 for a concrete foundation structure. This discarding formwork 10 has a plurality of formwork panels 1 juxtaposed at predetermined positions on discarding concrete 11,
It is constructed by reinforcing this formwork panel 1 with a formwork support member such as a square pipe 12, and a reinforcing bar 13 is prearranged in the inside.

In this case, the formwork panel 1 is erected on the waste concrete 11 so that the water draining holes (separation holes) 5 on the back side thereof face the empty side in the formwork, and the mounting plate 7 is discarded. It is fixed by being nailed to the concrete 10. Further, the plurality of formwork panels 1 constituting one side surface of the substructure are joined flush with each other by overlapping the groove portions 4 thereof.

Further, the formwork panel 1 has a rib portion 3 in the vertical direction.
Since it has a large number of groove portions 4 and groove portions 4 and has sufficient bending strength in the vertical direction, the formwork panel 1 has a horizontal rectangular pipe (corner).
Material 12 is supported so that it can withstand the surface pressure of concrete. FIG. 4 shows a fixing structure of the formwork panel 1. As shown in the figure, the formwork panel 1 has a front surface side.
The groove portion 4 of the mold is arranged so as to open to the outside of the mold, and the separator 14 is provided in the water drain hole (separation hole) 5 at an appropriate height of the mold panel 1 from the inner side of the mold to the outside of the mold. The foam tie 16 is inserted and the foam tie 16 is connected to the protruding end of the separator 14 via the spacer 15.

As shown in FIG. 5, the foam tie 16 is provided with a bifurcated hooking portion 17 at its tip and a slit 18 in the middle thereof. On the other hand, the spacer 15 is
As shown in FIG. 6, it is made of a synthetic resin such as a plastic formed in a sectional shape that fits exactly into the groove portion 4, and has a through hole 20 in the center through which the head portion 19 of the separator 14 can be inserted.

Therefore, in this embodiment, the spacer 15 is fitted to the protruding end of the separator 14 protruding into the groove 4, and then the hook portion 17 of the foam tie 16 is hooked on the head portion 18 of the separator 14 to form the foam tie 16. Can be connected to the separator 14 with one touch. Reference numeral 21 is a washer (stopper) that presses the spacer 15 from the inner side of the mold.

The square pipe 12 is placed on the upper surface of the foam tie 15, and L provided on the back side of the square pipe 12.
The foam tie 16 is penetrated through the center of the mold retainer 22. A wedge metal fitting 23 is driven into the slit 18 located at the penetrating portion of the foam tie 16,
Do not pull the foam tie 16 outside the formwork.
The square pipe 12 is connected to the formwork panel 1 through the metal holding metal fitting 22.
It is pressed to the side and the formwork panel 1 is supported so as to withstand the surface pressure of concrete.

As shown in FIG. 7, at the corners of the discarding formwork 10, the formwork panels 1 which are orthogonal to each other are connected to each other through an angle member 24 having an L-shaped cross section. That is, the angle member 24 has a horizontally long slot 25 at the same height as the water drain hole 5 of the mold panel 1, and the slot 25 and the drain hole 5 are connected to each other so that the mold panel 1 The formwork panels 1 are connected orthogonally by arranging them on the angle member 24 and inserting a retaining pin (not shown) into the long hole 25 and the water draining hole 5.

The angle member 24 is used as the discarding mold 1.
0 may be provided outside (FIG. 7 (a)) or inside (FIG. 7 (b)). In addition, in FIG.
Reference numeral 6 denotes a topline stay made of a long product having a U-shaped cross section. By attaching the topline stay 26 to the upper end portion of the formwork panel 1, the topline of the formwork panel 1 is linearized, and The sharp upper edge of the formwork panel 1 prevents the worker from being injured.

In the discarding mold 10 having the above structure,
After pouring concrete, the formwork panel 1 is buried and the labor of dismantling the formwork is achieved. At this time, in this embodiment, since the formwork panel 1 has the rib portion 3 and the formwork panel 1 only needs to be supported by the lateral square pipes 12,
The labor of assembling and disassembling the formwork is greatly reduced.

Further, since the formwork panel 1 has a large number of water draining holes 5 in the groove portion 4 extending in the vertical direction on the front surface side, excess water of concrete cast on the back surface side of the panel body 2 is watered. Since it can be discharged to the surface side from the vent hole 5 to stabilize the strength of the substructure, the discharged excess water flows downward in the groove portion 4 of the panel body 2, so that it contacts the rib portion 3. It is possible to prevent the square pipe 12 and the holding metal fitting 22 from being contaminated by surplus water by passing through the side of the square pipe 12 arranged as a unit.

Further, since the water drain hole 5 has a size that allows the separator to be inserted therethrough and can also be used as a separator hole, it is not necessary to open a separator hole in the panel body at the site.
It is possible to reduce the construction work in the formwork work. Particularly in the case of this embodiment, since the water drain holes (separation holes) 5 are provided in all the groove portions 4 and the height positions thereof are aligned, the degree of freedom in selecting the attachment angle of the separator 14 is high, and therefore It is possible to attach the separator 14 to the form panel 1 as vertically as possible even if there is a slight deviation in the widthwise position of the frame panel 1.

On the other hand, the formwork panel 1 according to this embodiment integrally has a mounting plate 7 at the lower end, and the mounting plate 7 is nailed or the like to discard the formwork panel 1 against the concrete 11. And easy to position and attach,
From this point as well, it is possible to reduce the construction labor in the formwork work. Further, since the mounting plate 7 is provided with the groove portion 9 which communicates with the groove portion 4 on the panel body 2 side, the surplus water flowing down the groove portion 4 of the panel body 2 further passes through the groove portion 9 of the mounting plate 7 to form frame panel 1 Therefore, the lower part of the discarding mold 10 can be prevented from being contaminated due to the accumulation of excess water.

The rib portion 3 and the groove portion 4 of the form panel 1
The sectional shape of is not limited to the above-mentioned sine curve shape, but the trapezoidal shape shown in FIG. 8 (keystone plate)
Alternatively, the present invention can be applied to other triangular shapes. Further, the material of the mold panel 1 may be, for example, a plastic plate other than sheet metal, and in short, a non-wood material that can integrally form the rib portion 3 and the groove portion 4 on the surface side that can be used as the discarding mold Any type of system will do.

[0028]

As described above, according to the present invention,
The spacer 15 has a cross-sectional shape that fits exactly in the groove portion 4.
From the tip of the foam tie 16 to the spacer 15.
Even if the pressing force acts, the pressing force is dispersed and the form panel 1
Is transmitted to the formwork panel 1 having a corrugated cross section.
Deformation of formwork panel 1 without making it particularly thick
Without the wedge member 23, the former fixing method is used to form the form panel.
1 can be fixed to the separator 14.

[Brief description of drawings]

1A is a side view of a form panel, FIG. 1B is a side view thereof, and FIG. 1C is a plan view thereof.

2A is a sectional view taken along the line AA of FIG. 1, and FIG. 2B is FIG.
FIG. 6 is a sectional view taken along line BB of FIG.

FIG. 3 is an assembled perspective view of a discarding mold.

FIG. 4 is a cross-sectional view showing a support structure for a formwork panel.

5A is a side view of the foam tie, and FIG. 5B is a rear view of the same.

FIG. 6 is a perspective view of a spacer.

FIG. 7 is a perspective view showing a corner portion of the discarding mold.

FIG. 8 is a perspective view of another formwork panel.

[Explanation of symbols]

1 Formwork panel 2 Panel body 3 Rib section 4 Groove section 5 Drain hole (separator hole) 12 Square bar (square pipe) 14 Separator 15 Spacer 16 Foam tie 21 Stopper (washer)

Claims (1)

[Claims] 1. A metal plate body is formed into a corrugated bent shape.
Form panel having alternating rib portions (3) and groove portions (4)
The groove (4) on the surface side of the rule (1) is opened outside the mold.
Separator holes arranged in this form panel (1)
Place the separator (14) in (5) from the inside of the mold to the outside of the mold.
Once inserted, axial direction of the separator (14)
The stopper (21) provided in the middle of the form frame panel (1)
The separator (14) is brought into contact with the back surface, and a foam tie (1
6) is connected and mounted on this form tie (16)
Place the square bar (12) on the surface of the form panel (1).
And pierce through the middle of the foam tie (16)
The wedge tie (23) is used to attach the foam tie (16) to the outside of the form.
While pulling in one direction, attach the timber (12) to the form panel (1) side.
The separator (14) by pressing it against the form panel.
A structure for fixing a form panel to be fixed to a mold (1), comprising a separation hole (5) formed in a groove (4) of the form panel (1).
At the protruding end of the separator (14) inserted in the
The cross section has a cross section that fits exactly in the groove (4)
The spacer (15) is interposed, and the spacer (15) protruding further out of the mold
Foam tie connected to the protruding end of the pallet (14)
When the tip of (16) is brought into contact with the spacer (15),
The fixed structure of the formwork panel, which is characterized in that