JP3484113B2 - Net formwork, formwork structure and formwork installation method - 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 used for pouring concrete, and more particularly to a mesh formwork having a mesh, a formwork structure and a formwork installation method.

[0002]

2. Description of the Related Art A mesh formwork having a mesh has been proposed as a formwork used for placing concrete. The net formwork releases the pressure of the poured concrete, and
Since it has excellent air permeability, there is an advantage that suitable concrete can be constructed. Hereinafter, a conventional mesh form will be described with reference to FIG.

FIG. 21 (a) is a view showing a mode in which a conventional net form 51 is supported by a horizontal beam 54, and FIG.
FIG. 6 is an enlarged view of the periphery of the rib 53.

The mesh frame 51 is provided with ribs 53 provided at substantially equal intervals in the left-right direction, and a mesh 52 provided between the ribs 53.
And is usually integrally formed by a thin iron plate. The mesh frame 51 is provided with ribs 53 to enhance the strength in the vertical direction, and at the time of installation, a horizontal beam 54 is attached so as to traverse each rib 53 so that the pressure of the concrete to be placed can be counteracted. I have to.

[0005]

However, in the conventional net formwork, although the ribs ensure the strength in the vertical direction,
In this case, the strength may not be sufficient.

[0006] Here, in the conventional net form, there is a problem that the cast concrete, particularly so-called Noro (supernatant liquid oozing out from the concrete) leaks to the outside from the mesh of the net form. Porphyra forms a film on the surface of concrete and largely depends on its strength, so that outflow is not preferable. In this regard, the applicant has proposed in Japanese Patent Application No. 11-7001 a form which can prevent leakage of roasts by making two mesh forms double by interposing wires. However, even such a mold has insufficient strength, so that there is a problem that unevenness easily occurs in the intervals of the net molds.

Therefore, an object of the present invention is to provide a net formwork which can exhibit high strength as a formwork. Also,
Another object of the present invention is to provide a formwork structure and a formwork installation method.

[0008]

According to the present invention, there are provided two plate members each including a mesh region having a meshed portion and joint regions arranged adjacent to both sides of the mesh region. A net formwork for concrete pouring that is superposed on each other and joined in the joining region, so that the net regions of each of the plate members are separated from each other, and the net region and the net region of at least one of the plate members There is provided a mesh formwork characterized in that a region between the joint region and the joint region is bent.

According to this means, since the mesh is doubled, leakage of slag can be prevented, and the interval of the mesh area having the meshed portion is at least one of the mesh areas of the plate material and the mesh area. Since it is determined by bending the area between it and the joining area, it is relatively accurate and has no unevenness.

Further, according to the present invention, two plate members including a mesh area having a meshed portion and rib areas arranged adjacent to both sides of the mesh area are superposed on each other. Mesh form for concrete pouring that is joined together, wherein each of the rib regions is bent so that the rib regions of the two plate members form a substantially hollow prism. Will be provided.

Further, according to the present invention, two plate members including a mesh region having a meshed portion and rib regions respectively adjacent to both sides of the mesh region are superposed on each other. A mesh form for concrete pouring joined together, wherein each of the rib regions is bent so that the rib regions of the two plate materials form a substantially hollow cylinder or an elliptic cylinder. A mesh formwork is provided.

In these means, since the portion corresponding to the conventional rib is formed in a hollow columnar shape, the strength of the net form can be improved.

[0013]

[0014]

Further, according to the present invention, there is provided a formwork structure for concrete pouring in which two formworks are vertically connected, and one of the formworks has a meshed portion. A net formwork in which two plate members including a net region and rib regions adjacent to both sides of the net region are overlapped and joined to each other, and the rib regions of the two plate members are , A net form which is formed by bending each of the rib regions so as to form a substantially hollow prism or a cylinder or an elliptic cylinder, and a connector for connecting the net form and the other form.
A formwork structure is provided, a part of which is provided with a connecting tool inserted in the substantially hollow prismatic column or the columnar or elliptical column of the mesh formwork.

Further, according to the present invention, concrete comprising a deck plate arranged substantially horizontally and at least two net formwork arranged substantially vertically to the deck plate so as to support the deck plate. A formwork structure for casting, wherein the mesh formwork includes two mesh regions including a mesh region having a meshed portion, and rib regions adjacent to both sides of the mesh region. A net formwork in which plate materials are overlapped and joined to each other, and the rib regions of the two plate materials are bent so that each rib region forms a substantially hollow prism or a cylinder or an elliptic column. Is a formwork,
A support for supporting the deck plate,
There is provided a formwork structure, a part of which is provided with a support tool inserted into the substantially hollow prismatic column or the columnar or elliptical column of the mesh formwork.

Further, according to the present invention, two plate members including a mesh region having a meshed portion and joining regions arranged adjacent to both sides of the mesh region are superposed on each other. And a step of joining the two plate members in the joining region to form a net form,
In the plate member, at least one of the plate members is bent in a region between the mesh region and the bonding region so that the mesh regions of the respective plate members are separated from each other when the plate members are joined. Provided is a method for installing a formwork for placing concrete, which is characterized in that

Further, according to the present invention, there is provided a formwork installing method of vertically connecting a net formwork and another formwork, which comprises a net area having a meshed portion, A rib region adjacent to both sides of the mesh region, and 2
A net formwork in which two plate materials are overlapped with each other and joined, and each of the rib regions is bent so that the rib regions of the two plate members form a substantially hollow prismatic column, a cylinder, or an elliptic column. A step of arranging the mesh formwork, and a step of inserting a part of a connecting tool that connects the mesh formwork and the other formwork into the substantially hollow prismatic column or column or elliptic cylinder of the mesh formwork; And a step of connecting the another formwork to the net formwork by the connecting tool, the method for installing a formwork for concrete break-off is provided.

Further, according to the present invention, the steps of arranging at least two net molds substantially vertically, the step of installing a support on the net molds, the deck plate being arranged substantially horizontally, And a step of supporting the mesh formwork by placing it on the mesh formwork with a supporting tool, wherein the mesh formwork is adjacent to both sides of the mesh region and a mesh region having a meshed portion. A net formwork in which two plate members each including a rib region arranged respectively are overlapped and joined to each other, and the rib regions of the two plate members form a substantially hollow prism or a cylinder or an elliptic cylinder. As described above, each of the rib regions is a net form, and the support is partially inserted into the substantially hollow prism or column or ellipse of the net form to form the net. Concrete pouring characterized by being installed in formwork Mold installation method for are provided.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the plate material is preferably a metal plate, and particularly preferably an iron plate. Further, when the plate material is an iron plate, a plate having a thickness of 0.3 to 0.5 mm can be used.

As a method of forming the mesh, for example, a so-called expanding process can be mentioned.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. <Embodiment 1> FIG. 1 is a perspective view of a net formwork 1 for concrete pouring according to a preferred embodiment of the present invention. Also,
FIG. 2 is a plan view of the mesh form 1 of FIG. 1 seen from above.

The net formwork 1 is constructed by stacking two iron plates 2 and 3 on top of each other.

The iron plate 2 has a meshed mesh area 2a,
Bonding regions 2 arranged adjacent to both sides of the mesh region 2a
It is a one-piece with b. Further, the iron plate 3 is an integrated body having a meshed mesh area 3a and joint areas 3b arranged adjacent to both sides of the mesh area 3a.

The iron plates 2 and 3 are joined in their respective joining regions 2b and 3b. Examples of the joining method include welding, adhesion, fastening with bolts or rivets,
Examples include caulking.

In the iron plate 3, a region 3c between the mesh region 3a and the joining region 3b is bent, so that the mesh region 2a of the iron plate 2 and the mesh region 3a of the iron plate 3 are separated from each other by a distance d. It is configured to be separated. That is, this distance d
Depends on the degree of bending of the region 3c and can be adjusted more. The distance d is 3 mm to 1
A range of 5 mm is desirable. In this embodiment, the area 2c between the net area 2a and the joining area 2b of the iron plate 2 is
Not bent.

The net formwork 1 having such a configuration is installed so as to surround a portion where concrete is to be placed (for example, in a square shape or in a circular shape), like a general formwork. It is intended to be used. In this case, there is no problem even if the iron plate 2 side is on the inside or the iron plate 3 is on the outside. Further, the iron plate 2 and the iron plate 3 may be joined after they are arranged at the portions where concrete is placed.

Since the net form 1 has a double net (mesh regions 2a and 3a), the spillage from the cast concrete leaks out of the net form 1. It can be accumulated between the mesh regions 2a and 3a without forming, and a good slag film can be formed. Further, it is possible to prevent the poured concrete from flowing out of the net formwork 1.

Particularly, in the net form 1, since the distance d between the net area 2a and the net area 3a can be adjusted by the degree of bending of the area 3c, the distance d should be set relatively accurately. You can

It should be noted that the broken line in FIG.
In, the boundary between the mesh region 2a or 3a and the region 2c or 3c, and the region 2c or 3c and the joining region 2b or 3b
Although the boundary between the steel plate 2 and the steel plate 2 is not shown, there is no structurally clear boundary.
And 3 are joined to each other, the mesh area 2a and the like are areas including a meshed portion, and the area 2c and the like are areas where the iron plate is bent between these areas, respectively. There is.

In the present embodiment, the bending of the region 2c and the like means, as in the example of FIG. 2, bending in a slightly angular manner (see 2c '), and as shown in the plan view of FIG. 3 (a). In addition, the case of smoothly bending (see 2c ') is also included.

Further, in the net formwork 1 shown in FIGS. 1 and 2,
The region 3c is bent so that the net region 3a of the iron plate 3 is substantially parallel to the net region 2a of the iron plate 2, but the present invention is not limited to this, and at least the net region 2a and the net region 3a should be separated from each other. The region 3c may be bent so that the above can be performed.

For example, as shown in the plan view of FIG. 3B, the mesh area 3a may be inclined with respect to the mesh area 2a. Further, the mesh area 3a does not need to be flat, and is
As shown in the plan view of (c), it may be bent (3a ') on the way.

Furthermore, in the net formwork 1 shown in FIG.
A mesh is provided uniformly over the entire surface of a and 3a,
It may be partially provided, and the mesh area 2a shown in FIG.
And 3a as shown in FIG.
As shown in the mesh areas 2a and 3a in FIG. 7B, the mesh areas may be partitioned in the vertical and horizontal directions.

Further, the directions of the meshes are the mesh areas 2a and 3
If the direction is different from that of a, the meshes can intersect with each other and the mesh can be made substantially finer.

In addition to the mesh areas 2a and 3a, the area 2
A mesh may be provided on c and 3c.

Next, in the net form 1 of FIG. 1, the region 2c of the iron plate 2 is not bent, but it may be bent. Figure 4
[Fig. 3] is a perspective view of the net formwork 11 for placing concrete. Further, FIG. 5 is a plan view of the net form 11 of FIG. 4 seen from above.

The net form 11 is constructed by stacking two iron plates 12 and 13 on top of each other.

The iron plate 12 has a meshed mesh area 12a.
And a joining region 12b disposed adjacent to both sides of the net region 12a, respectively. Also, the iron plate 13
Is a unitary body having a meshed mesh region 13a and joint regions 13b arranged adjacent to both sides of the mesh region 13a.

The iron plates 12 and 13 are connected to each other in the joining region 12
Joined at b and 13b.

The iron plates 12 and 13 are mesh regions 12a or 1
Areas 12c and 13c between 3a and the joining area 12b or 13b are bent, so that the net area 12a of the iron plate 12 and the net area 13a of the iron plate 13 are separated from each other by a distance d. is doing. That is, in the net formwork 11, the regions 12c in both the iron plates 12 and 13 are
The distance d is adjusted by bending 13 and 13c.

In this net form 11, the same effects as those of the net form 1 described above can be obtained, and since the iron plate 12 and the iron plate 13 have the same shape, it is necessary to manufacture the iron plates 12 and 13 separately. There is an advantage that there is no.

However, the iron plate 12 and the iron plate 13 do not necessarily have the same shape. For example, as shown in the plan view of FIG. 6 (a), the net area (13a) of one iron plate (13) is inclined. The region 13c may be bent like this.

Further, as shown in the plan view of FIG. 6 (b),
The mesh region (12a) of one iron plate (12) may be bent (12a '), and between the iron plates 12 and 13, the mesh regions 12a and 13a, the joining regions 12b and 13b, and
The positions of the regions 12c and 13c in between may be displaced.

Further, in the net form 11 of FIG. 4, the net area 12
area 12 so that a and 13a project in opposite directions.
c and 13c are bent, but net areas 12a and 13c
If a can be separated from each other, for example, as shown in FIG. 6C, the regions 12c and 13c may be bent so that the net regions 12a and 13a project in the same direction.

Next, in the mesh forms 1 and 11 described above, only one unit of the mesh region and the joining regions on both sides thereof is shown, but the mesh region and the joining region may be repeatedly provided.

FIG. 8 is a diagram showing a mesh form frame in which the mesh regions 12a and the like and the joining regions 12b and the like of the mesh form 11 are integrally and repeatedly provided in each of the iron plates 12 and 13.

Further, the mesh area and the joining areas on both sides thereof are set to 1
As a unit, repeat this with appropriate intervals,
In addition, the ribs may be formed by bending the space.

In FIG. 9, the net regions 12a and the like and the joining regions 12b and the like of the net form 11 are spaced apart from each other by the iron plates 12 and 13.
FIG. 9 is a view showing a net form frame in which ribs 12d and 13d are provided by integrally and repeatedly providing each of them, and bending a portion of the interval.

FIG. 10 shows the mesh form of FIG.
It is a top view of a portion of ribs 12d and 13d. As is clear from FIGS. 9 and 10, the rib 12d and the rib 13d form a hollow prism having a hexagonal cross section. Also,
Mesh regions 12a and 13a, regions 12c and 13c,
Also substantially forms a hollow prism having a hexagonal cross section.

Therefore, this net formwork has a so-called honeycomb structure as a whole and has an advantage of high strength.

In the example of FIGS. 9 and 10, the rib 12 is used.
Although the hollow prism having a hexagonal cross section is formed by d and the rib 13d, the rib 12d and the rib 13d may be bent so as to form a hollow prism, a cylinder, or an elliptic cylinder having another shape. . <Embodiment 2> FIG. 11 is a perspective view of a net formwork 21 for concrete pouring according to a preferred embodiment of the present invention. Further, FIG. 12 is a plan view of the net form 21 of FIG. 11 seen from above.

The net form 21 is constructed by stacking two iron plates 22 and 23 on top of each other.

The iron plate 22 has a meshed mesh area 22a.
And rib regions 22b that are respectively arranged adjacent to both sides of the net region 22a. Also, the iron plate 23
Is an integral body having a meshed mesh region 23a and rib regions 23b arranged adjacent to both sides of the mesh region 23a.

The iron plates 22 and 23 are joined in the respective regions 22c and 23c and the regions 22d and 23d, but the joining site is not limited to this, and the iron plates 22 and 2 are joined together.
Other parts may be used as long as they can be joined together with 3.

The rib regions 22b and 23b are respectively bent to form a hollow prism having a hexagonal cross section as a whole, but not limited to this, and a hollow cylinder or a hollow elliptic cylinder is formed. Rib regions 22b and 23b
May be bent.

Further, as in the first embodiment described above, the mesh area 22a and the mesh area 23a may be separated from each other.

Further, as shown in FIG. 9 described above, the mesh area 22a
Etc. and the rib regions 22b on both sides thereof may be repeatedly provided.

Since the rib regions 22b and 23b form a hollow prism in the net form 21 having the above structure,
It has the advantage of exhibiting high strength while being lightweight.

In particular, the net formwork 21 is advantageous when used in combination with another formwork to form a formwork structure. FIG. 17 is a front view showing a formwork structure 100 using the net formwork 21,
FIG. 18 is a sectional view taken along the line AA.

The formwork structure 100 is composed of a net formwork 21 and a plywood 24 which is another formwork connected thereto via a connecting fitting 25.

FIG. 20A is a perspective view of the connecting fitting 25. The connecting fitting 25 has a hexagonal column-shaped insertion portion 25a.
And a support portion 25b that supports the plywood 24.

As shown in FIG. 18, the connecting member 25 has the insertion portion 25a inserted into the hollow prism formed by the rib regions 22b and 23b of the net form 21.
Further, the plywood 24 is sandwiched between the protrusions of the support portion 25b, so that the mesh frame 21 and the plywood 24 are connected to each other.

In general, the net formwork is inferior to the conventionally used plywood (control panel) formwork in terms of smoothness of the concrete surface. Therefore, in the concrete structure, a plywood formwork may be used for the part that appears on the ground, and a net formwork may be used for the underground part.

In the mold structure 100, the net mold 21 and
Since a mold (plywood 24) of a different type can be used in combination with this, for example, the plywood 24 can be located at a site where smoothness of the concrete surface is required. Various concrete structures can be constructed according to design requirements.

In the example of FIG. 17, the plywood 24 is placed on the net form 21, but it goes without saying that it may be placed below it. Further, instead of the plywood 24, another type of mold may be adopted. Furthermore, the connecting metal fitting 25
May have another part as the method of connection with the plywood 24 as long as it has a portion to be inserted into the hollow prism formed by the rib regions 22b and 23b of the net form 21.

In constructing the formwork structure 100, first, the net formwork 21 is arranged, and the connecting tool 2 is attached thereto.
5 is attached, and then the plywood 24 is placed on the net form 21 and connected by the connecting tool 25.

Next, the net formwork 21 has an advantage in forming a formwork structure in combination with a deck plate for forming a slab.

FIG. 19 is a view showing a formwork structure 200 for forming such a slab.

The formwork structure 200 includes a deck plate 27 arranged substantially horizontally, two net formworks 21 arranged substantially vertically for supporting the deck plate 27, and a deck plate 27 for supporting the deck plate 27. It comprises a support metal fitting 26 and.

FIG. 20B is a perspective view of the support fitting 26, and the support tool 25 includes an insertion portion 26a having a hexagonal prism,
L-shaped support portion 26b that supports the deck plate 27
And

Then, similarly to the above-described connecting metal fitting 25, the supporting metal fitting 26 has the insertion portion 26a inserted into the hollow prism formed by the rib regions 22b and 23b of the net form 21. In addition, the deck plate 27 is attached to the support portion 26b.
The deck plate 27 can be supported by the net formwork 21 by placing it on the top.

With such a formwork structure, since the deck plate 27 can be stably supported, accidents such as dropping of the deck plate can be prevented when constructing the slab.

When constructing such a formwork structure 200, first, the net formwork 21 is installed, and the support 2
5 is attached, and then the deck plate 27 is laid between the mesh forms 21 and placed on the support 25. <Embodiment 3> FIG. 13 is a perspective view of a net formwork 31 for concrete pouring according to a preferred embodiment of the present invention. Further, FIG. 14 is a plan view of the net form frame 31 of FIG. 13 as seen from above.

The mesh form 31 comprises a meshed mesh area 32.
And rib regions 33 arranged on both sides of the mesh region 32, respectively.
It consists of an iron plate containing.

Each rib region 33 is arranged substantially continuously with a space d, and has two projecting portions 33a having a trapezoidal cross section and projecting at the same height h.
It has been bent.

Here, in the conventional mesh form as shown in FIG. 21, since the rib has only one protrusion, the transverse beam installed so as to abut the tip of the rib becomes structurally unstable. , Ribs may buckle. This is because the horizontal beams make point contact with the ribs and the load is concentrated.

In this regard, the net formwork 31 shown in FIG. 13 is used.
As shown in FIG. 16, each of the protrusions 33a and the cross beams 3 is
4 is almost point contact, but since the two protrusions 33a are arranged substantially continuously, the load is dispersed, and this is the same as the fact that they are substantially in contact with each other. Is structurally stable, and buckling of the protrusion 33a can be prevented.

As shown in FIG. 15C, the same effect can be obtained by widening the width of the side surface 33a ″ of one protrusion 33a ′ without continuously providing the protrusion 33a. Although conceivable, there is a risk that the bent portion will open due to the pressure of the concrete as shown by the arrow, which is not preferable.

That is, the net form frame 31 becomes excellent in strength by providing the protrusions 33a continuously.

Although the preferred embodiments of the present invention have been described above, it is needless to say that the various structures and the like shown in the respective embodiments can be appropriately combined within a practicable range.

[0082]

As described above, the present invention can exhibit high strength as a mold.

[Brief description of drawings]

FIG. 1 is a perspective view of a net formwork 1 according to a first embodiment of the present invention.

FIG. 2 is a plan view of the net formwork 1.

3 (a) to 3 (c) are plan views of modifications of the net formwork 1. FIG.

FIG. 4 is a perspective view of a net formwork 11 according to an embodiment of the present invention.

5 is a plan view of the net formwork 11. FIG.

6 (a) to 6 (c) are plan views of modified examples of the net formwork 11. FIG.

7 (a) and 7 (b) are diagrams showing examples of arrangement of meshes in mesh areas 2a and 3a.

FIG. 8 is a diagram showing an example in which a mesh form 11 is repeatedly provided.

FIG. 9 is a view showing another example in which the net form 11 is repeatedly provided.

FIG. 10 is a plan view of FIG.

FIG. 11 is a perspective view of a net formwork 21 according to a second embodiment of the present invention.

FIG. 12 is a plan view of the net form 21.

FIG. 13 is a perspective view of a net formwork 31 according to a third embodiment of the present invention.

FIG. 14 is a plan view of the net form 31.

15 (a) and 15 (b) are plan views of a modified example of the net formwork 11, and FIG. 15 (c) is a plan view showing a reference example.

FIG. 16 is a view showing a mode in which a horizontal beam 34 is provided on the net form 31.

FIG. 17 is a view showing a formwork structure 100.

18 is a cross-sectional view taken along the line AA in FIG.

FIG. 19 is a view showing a formwork structure 200.

FIG. 20A is a perspective view of the connector 25.
FIG. 6B is a perspective view of the support tool 26.

FIG. 21 (a) is a perspective view of a conventional mesh formwork.
(B) is an enlarged view around the rib.

Claims (18)

(57) [Claims] 1. A mesh area having a meshed portion,
A net formwork for concrete pouring, in which two plate members including a joint region arranged adjacent to both sides of the net region are overlapped with each other and joined in the joint region, each of the plate members So that the mesh areas of are separated from each other,
A net formwork characterized by bending a region between the netting region and the joining region in at least one of the plate materials. 2. The mesh formwork according to claim 1, wherein a region between the mesh region and the joining region in both of the plate members is bent. 3. The mesh formwork according to claim 1, wherein the mesh area is entirely meshed. 4. The mesh according to claim 1, wherein a part or the whole of the bent region is meshed.
Net formwork described in paragraph. 5. The mesh formwork according to claim 1, wherein the directions of the meshes are different between the plate materials. 6. The plate member, wherein the mesh region and the joining region are repeatedly provided.
The net formwork according to any one of 1. 7. The plate region is repeatedly provided with the mesh region and the joining region at intervals, and a portion of each plate member forming the interval is bent to form a rib. The mesh formwork according to any one of claims 1 to 6, characterized in that. 8. The portion of each of the plate members, which constitutes the gap, is bent so that the rib forms a substantially hollow prism. Net formwork. 9. A mesh area having a meshed portion,
A mesh formwork for concrete pouring, in which two plate members including a rib region disposed adjacent to both sides of the net region are overlapped and joined to each other, and the rib regions of the two plate members are provided. A net formwork characterized in that each of the rib regions is bent so as to form a substantially hollow prism. 10. The net formwork according to claim 9, wherein the prism is a hexagonal prism. 11. A concrete casting in which two plate materials including a mesh region having a meshed portion and rib regions adjacent to both sides of the mesh region are overlapped and joined to each other. A net formwork, wherein each of the rib regions is bent so that the rib regions of the two plate members form a substantially hollow cylinder or an elliptic cylinder. 12. The mesh formwork according to claim 9, wherein at least one of the plate members is bent so that the mesh regions of each of the plate members are separated from each other. 13. A formwork structure for concrete pouring, which is formed by connecting two formworks in the vertical direction, wherein one of the formworks has a net area having a meshed portion, and the net. A net formwork in which two plate members including rib regions arranged adjacent to both sides of the region are overlapped and joined to each other.
The rib regions of one of the plate members are mesh formwork in which each of the rib regions is bent so as to form a substantially hollow prism or a cylinder or an elliptic cylinder, and the mesh formwork and the other formwork are A formwork structure, which is provided with a connecting part which is inserted into the substantially hollow prism or column or ellipse of the mesh form. 14. A concrete pouring formwork comprising a deck plate arranged substantially horizontally and at least two net formwork arranged substantially vertically to the deck plate so as to support the deck plate. A structure, wherein the net formwork includes two net materials including a net area having a meshed portion and rib areas adjacent to both sides of the net area, and the two plate materials are superposed on each other. Mesh formwork joined together
The rib regions of one of the plate members are a mesh form formed by bending each of the rib regions so as to form a substantially hollow prismatic column, a columnar column, or an elliptic column, and a support tool for supporting the deck plate. hand,
A formwork structure, a part of which is provided with a support tool inserted into the substantially hollow prismatic column or columnar or elliptic column of the mesh formwork. 15. The network type frame, such that the network region of each of said plate members are spaced apart from each other, claim 13, characterized in that is obtained by bending at least one of the plate
Or the formwork structure according to item 14 . 16. A step of arranging two plate materials, which overlap each other, including a mesh region having a meshed portion and joint regions arranged adjacent to both sides of the mesh region, respectively. Joining the two plate members in the joining region to form a net form, wherein the plate members separate the net regions of the respective plate members from each other when the plate members are joined to each other. As described above, the method for installing a formwork for concrete placing is characterized in that an area between the mesh area and the joining area in at least one of the plate materials is bent. 17. A method of installing a form, wherein a net form and another form are connected in a vertical direction and arranged, wherein a net area having a meshed portion and both sides of the net area are provided. A net formwork in which two plate members including a rib region arranged adjacent to each other are superposed on each other and joined together.
Arranging a mesh form which bends each of the rib regions so that the rib regions of one of the plate members form a substantially hollow prism or a cylinder or an elliptic cylinder; and the mesh form and the other mold. A step of inserting a part of a connecting tool for connecting the frame into the substantially hollow prismatic column or the column or the elliptic cylinder of the mesh formwork; and connecting the other formwork to the mesh formwork by the connecting device. A method of installing a formwork for concrete breakage, which comprises the steps of: 18. A step of arranging at least two net molds substantially vertically, a step of installing a support tool on the mesh molds, a deck plate being arranged substantially horizontally, and the mesh tool by the support tool. A step of supporting it by placing it on a frame,
And the mesh form includes a mesh region having a meshed portion, and rib regions that are respectively arranged adjacent to both sides of the mesh region. The net formwork,
The rib region of one of the plate members is a net form which is formed by bending each of the rib regions so as to form a substantially hollow prism or a cylinder or an elliptic cylinder. A formwork installation method for concrete placing, characterized in that the formwork is installed in the net formwork by being inserted into the substantially hollow prismatic column, columnar column or elliptical column of the frame.