JPH04131464A - Form for building rhomb-patterned floor and building method for rhomb-patterned floor - Google Patents

Abstract

PURPOSE:To enable building of a high strength rhomb-patterned floor with high workability by a method wherein square conical forms are placed in a rhombic shape on a scaffolding board, reinforcing bars are arranged on the bottom part and to the upper part of a space part formed between the forms, and concrete is poured therein. CONSTITUTION:A flange 2 is formed at the base end part of each of forms 1a and 1a for building a rhomb-patterned floor formed in a square conical trapezoidal shape or a triangular trapezoidal shape by using resin, an air hole 4 connected to a pipe 5 through which compressed air flows is formed in a top plate 3, and a cover 6 is placed on the air hole 4. The forms 1a are placed in a rhombic shape on a scaffolding board 14 and reinforcing bars 9 are arranged on the bottom part of a space part 7, formed between the forms 1a, in a state to be supported through a spacer 8. Further, a support member 11 having a groove part 11a is arranged to the upper part of the space part 7, and reinforcing bars 12 are arranged thereon. Concrete 13 is poured on the forms 1a, and after curing of the concrete, compressed air is fed in the pipe 5, and the form 1a is separated away from the concrete 13 to release the form 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a formwork for constructing a diamond-shaped floor and a method for constructing a diamond-shaped floor for constructing a floor of a building made of reinforced concrete.

[Conventional technology]

Conventionally, as a method of constructing a floor of a building made of reinforced concrete, for example, there is a method of constructing a diamond-shaped floor using concrete parts. That is, after arranging the upper parts in a diamond pattern on the scaffolding board to form the floor, reinforcing mortar was placed, and diamond beam beam members with a length of 60 cm, a width of 6 mm, and a height of 30 ann were sequentially placed on top of the mortar. At the same time, the upper and lower reinforcing bars of the diamond-shaped beam members are tied vertically, and mortar is poured to fix the reinforcing bars and the diamond-shaped beam members to each other. Then, a floor is constructed by laying mortar on the diamond-shaped beam members and placing the floorboards on them.

[Problem to be solved by the invention]

However, the diamond-shaped floor constructed using the conventional diamond-shaped beam members mentioned above,
Since it is necessary to construct the diamond-shaped beam members by placing them in sequence, it is not possible to form the whole as a single piece, which results in poor workability and time-consuming work, as well as the need for skilled workers, who are in short supply these days. However, there was a problem in that the strength of the lozenge-shaped floor obtained was not sufficient.

The purpose of the present invention is to provide a formwork for constructing a rhombus floor that is lightweight and strong, does not cause any risk of injury, and is easy to handle, and also to easily and integrally construct a rhombus floor even if one is not a specialist craftsman. To provide a method for constructing a diamond-shaped floor, which can quickly construct a diamond-shaped floor with good workability and excellent strength.

[Means to solve the problem]

In order to solve the above problems, the first aspect of the present invention is characterized in that the resin is formed into a truncated quadrangular pyramid shape or a truncated triangular pyramid shape, and a flange is provided at the base end of the truncated pyramid shape. Its gist is the formwork for constructing diamond-shaped floors.

Further, in the second invention, the top plate of the formwork for constructing a rhombus floor in the first invention is provided with an air hole through which compressed air flows, a pipe is connected to the air hole, and a pipe is connected to the air hole. The gist of the formwork for constructing a rhombus floor according to claim 1, characterized in that a lid is placed on the air hole.

In the third invention, after the formwork for constructing a diamond-shaped floor according to claim 2 is placed in a diamond-like pattern on a scaffold board for constructing a floor, the space formed between the formworks is A reinforcing bar supported by a spacer is disposed at the bottom, a supporting member having a groove is disposed at the top of the space so as to span between the forms, and the reinforcing bar is disposed on the supporting member, and then A diamond-shaped floor characterized in that concrete is poured onto the formwork, and after the concrete has hardened, compressed air is sent to the pipe to separate the formwork and the concrete, thereby releasing the formwork from the concrete. Its gist is the construction method.

[Effect]

By employing the above configuration, in the first invention, the formwork for constructing a rhombus floor is formed of resin into a truncated quadrangular pyramid shape or a truncated triangular pyramid shape, and reinforcing bars are installed between the formworks at the base end thereof. A collar is formed for placement and filling with concrete.

In the second invention, an air hole through which compressed air flows is provided in the top plate of the formwork, a pipe is connected to the air hole, and a lid is provided above the air hole to block the air hole. is placed.

In the third invention, after the formwork for constructing a rhombus floor of the second invention is placed on a scaffold board for constructing a floor, a spacer is installed at the bottom of the space formed between the plurality of formworks. Reinforcing bars supported by the space are disposed, and a support member having a groove is disposed above the space so as to span between the forms,
Reinforcing bars are placed on the support member, then concrete is poured onto the formwork, and after the concrete hardens,
Compressed air is sent to the pipe to separate the formwork from the concrete, and the formwork is released from the concrete to construct a diamond-cut floor.

〔Example〕

An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 9.

FIG. 2 is a perspective view showing formworks 1a and 1b for constructing a rhombus floor of this embodiment, which are formed in the shape of a truncated quadrangular pyramid, and FIG. 3 is a truncated triangular pyramid, and FIG. It is a sectional view showing a state in which the formwork 1a for constructing a diamond-shaped floor is placed on a scaffolding board 14 [However, FIGS. 1 and 4. The formworks shown in Figures 6 and 12 are hereafter represented by 1a, but the same applies to lb (or lc).

As shown in Figures 2 and 3, there are two types of molds used in this embodiment: a mold frame la formed of resin into a truncated quadrangular pyramid shape, and a mold frame 1b formed into a truncated triangular pyramid shape. . A flange 2 of a constant width is integrally provided around the outer periphery of the base end thereof with the square or triangular truncated pyramid. In addition, in Figure 2,
The outer periphery of the tsuba 2 that is integrally formed with the truncated pyramid forms a square, and in FIG. It forms an isosceles triangle.

In addition, as shown in FIG. 4, the top plate 3 of the formwork 1a (Ib)
An air hole 4 is transparently provided in the center of the formwork 1a (lb).
It extends downward from the inner surface of the. However, since this formwork 1a (1b) can be stacked in multiple stages, the length of the pipe 5 should be short. Further, the upper surface of the air hole 4 is provided with a diameter that is longer than half the length of one side of the top plate 3 of the formwork 1a (Ib) so as to close the air hole 4, and has a strength greater than or equal to a chamber. A disk-shaped lid 6 made of resin is placed, and concrete 1, which will be described later, is placed thereon.
3 can be prevented from entering the inside of the formwork 1a (lb).

Next, a method for constructing a diamond-shaped floor using the formwork 1a (lb) for constructing a diamond-shaped floor will be described.

As shown in FIGS. 4 and 9, the formwork 1a (lb) having the above-mentioned structure is placed in a diamond pattern on the scaffolding board 14 for constructing the floor, which is installed so as to be flush with the floor. Place it. For example, in the example of FIG. 9, first, the truncated triangular pyramid formwork 1b+
is placed, and then a formwork 1b2 of the same shape is placed so that the short side flanges thereof overlap. Then, the acute-angled flanges of the formworks 1ba having the same shape are placed on top of each other so that the oblique sides form the outer circumferential line.

The flange of the truncated pyramidal form lal is placed on the inside thereof, and the flange of the same-shaped form 1a2 is placed next to it.

Then, similar to the above, the truncated triangular pyramidal molds 1b4 are placed one on top of the other so that the oblique sides form the outer circumferential line.

In this way, in this embodiment, each square pyramidal truncated formwork 1
The four sides of the collar 2 of a are placed at 45 degrees with respect to the outer circumferential line, forming a diamond pattern.

In addition, when placing the tsuba 2 on top of each other, the tsuba 2 of the formwork 1a
Although the edge of the frame may protrude slightly from the outer circumferential line, there is no problem in constructing a diamond-cut floor by adjusting the position of the outer circumferential frame (not shown), which serves as a concrete stopper and has the same inner shape as the floor. No hindrance.

Next, as shown in FIG. 5, adjacent formworks 1 are formed by placing the formworks 1a (1b) in a diamond pattern.
A reinforcing bar 9 supported by spacers 8 as shown in FIG. 7 is disposed at the bottom of the space 7 between the two spaces. The spacer 8 is
It has a disk shape, and an insertion hole 10 is formed in the center, through which a reinforcing bar 9 is inserted. A plurality of such spacers 8 are arranged at regular intervals and support the reinforcing bars 9. Although the material and shape of the spacer 8 are not particularly limited, it is generally made of metal such as iron or resin such as nylon, and a disc-shaped spacer is preferably used.

Next, in the upper part of the space 7, mutually adjacent formworks 1
A support member 11 having a groove portion 11a formed in a 7-shape is disposed so as to extend over the top plate 3 of a. and,
As shown in FIG. 8, by placing the reinforcing bar 12 on the groove 11a of the support member 11, the reinforcing bar 12 is positioned at the bottom of the groove 11a formed in a figure 7 shape. Note that the material of the support member 11 is not particularly limited, and any material may be used as long as it has the strength to support the reinforcing bar 12. Further, in this embodiment, a cylindrical support member 11 is used, but a prismatic support member 11 may be used.

Thereafter, as shown in FIG.
Concrete 13 is poured into the space 7 between the top plate 3 and the formwork 18 of the truncated triangular pyramid formwork 1b until it has a thickness of a certain level or more, so that the surface (the top surface in Fig. 1) is almost flush with the concrete 13. do. At this time, in order to reinforce the concrete, a wire mesh (not shown) made of wires may be placed in the middle of the concrete layer. After the concrete 13 has hardened, compressed air is forced into the pipe 5 extending to the inner surface of the formwork 1a. Then, the compressed air flows from inside the pipe 5 to the top plate 3 and the lid 6.
and spreads from the center of the lid 6 to the outer periphery. As a result, the formwork 1a (1b) is made of concrete 13
Force is received in the direction away from (downward in Figure 1). and,
Since the space between the formwork 1a (lb) and the concrete 13 tends to separate, by separating the formwork 1a (lb) from the concrete 13, the desired diamond-shaped floor is constructed as shown in Figure 6. be done. In addition, after demolding, concrete 13
The invaginated lid 6 may be removed or may be used as it is as a rhombus floor.

For example, the diamond-shaped floor constructed in this way is
The wall is constructed by the construction method disclosed in JP 8-131252, and a reinforced concrete building is integrally constructed. In other words, this wall was constructed by (a) installing an outer formwork having ribs in the vertical direction, (b) arranging vertical reinforcing bars inside the outer formwork, and drilling holes in the ribs of the outer formwork. A process of inserting horizontal reinforcing bars into the horizontal reinforcing bar insertion holes and arranging them, ()\) Installing the inner formwork in contact with the ribs of the outer formwork,
a step of connecting the outer formwork and the inner formwork via a connecting tool; (d) a step of pouring fresh concrete between the outer formwork and the inner formwork and curing and hardening; (e) the above-mentioned connecting tool. It is constructed from the step of removing the

Formwork 1a for constructing a diamond-shaped floor described in this example.

Since Ib is made of resin, it has a certain level of strength and is less likely to deform than metal, so there is no risk of it being used in a deformed state. It is also lighter and easier to handle than metal. In addition, it can be easily manufactured by injection molding, etc., and has excellent mass productivity. Furthermore, parts that may cause injury can be made thicker or easily chamfered, so there is no risk of injury and it is safe.

Furthermore, since they can be stacked in multiple layers, they do not take up much space and are convenient to transport.

In addition, the two types of formworks la and 1 for constructing the rhombus floor in this example are
．． b, it is possible to accommodate a floor slab of the required size, and when constructing a diamond-cut floor, the desired floor size can be achieved by varying the overlapping ratio of the mutual flanges 2 of adjacent formworks 1a. It is possible to easily construct a diamond-shaped floor that matches the size without any mistakes even without the use of a specialized reinforcing bar worker with skill. Furthermore, when the formworks 1a and 1b are released from the concrete 13, compressed air is supplied to the air holes 4 through the pipe 5, so that the lid is placed so that the air covers the air holes 4. 6 and formwork 1a.

Easy mold release between 1b and concrete 13, and
This has the advantage that it can be done quickly.

Furthermore, the rhombus floor constructed by the formworks 1a and lb of this example is integrally constructed, and as a result of mechanical strength calculations, it has higher strength than a conventional lattice floor. Since the maximum bending force is almost the same for all beams regardless of length, reinforcing bars with the same cross section can be used effectively for all beams.

Note that the present invention is not limited to the configuration and construction method of the embodiments described above, and may be modified as desired without departing from the spirit of the invention, for example, as described below.

(1) In the above embodiment, two types of formworks 1a and Ib, one in the shape of a truncated square pyramid and the other in the shape of a truncated triangular pyramid, were employed, but as shown in FIGS. 10 and 11 (a) and (b), , a truncated triangular pyramid-shaped formwork 1 whose size is further half that of the above-mentioned truncated triangular-pyramidal formwork 1b.
c (The outer circumference of Tsuba 2 naturally forms a right-angled isosceles triangle.)
By using this method, it is possible to construct diamond-shaped floors with a wide variety of areas and shapes.

(2) In the construction method of the above embodiment, adjacent flanges 2 were placed so as to overlap each other and arranged in a diamond pattern, but as shown in FIGS. 12 and 13, adjacent formwork 1
It may be placed so that the edges of the flanges 2 of a and lb are in contact with each other. In this case, the area cannot be finely adjusted, but the arrangement becomes easier and the arrangement becomes neater. Further, when releasing the molds 1a, Ib, there is no need to determine the order of the molds 1a, lb to be peeled, and the peeling work can be performed more easily and quickly.

(3) The flanges 2 of the molds 1a and lb in the above embodiments had a constant width and the outer periphery was linear, but for example, the outer periphery could be formed into a wave shape or an uneven shape. It is also possible to adopt a type in which the collar 2 can be fitted, in which case,
In addition to the above effects, it has the unique effect of being easy to line up and difficult to shift.

〔Effect of the invention〕

The formwork for constructing a rhombus floor of the first invention is lightweight and strong,
It has the advantage of being easy to handle and without the risk of injury.

The formwork for constructing a diamond-shaped floor according to the second invention has the effect that by supplying air to the air hole through the pipe, this air spreads along the lid and promotes the separation between the formwork and concrete. play.

According to the third aspect of the invention, it is possible to integrally construct a diamond-shaped floor, and it is possible to quickly construct a diamond-shaped floor with good workability and excellent strength.

[Brief explanation of the drawing]

1 to 9 are diagrams showing embodiments of the present invention.
The figure is a cross-sectional view showing the state in which concrete is poured when constructing a diamond-shaped floor using the formwork for constructing a diamond-shaped floor. Figure 2 shows the square pyramid-shaped formwork used as the formwork for constructing a diamond-shaped floor. A perspective view showing,
Fig. 3 is a perspective view showing a truncated triangular pyramid formwork as a formwork for constructing a rhombus floor, Fig. 4 is a sectional view showing the state in which the formwork for constructing a rhombus floor is placed, and Fig. 5 is a rhombus pattern. A cross-sectional view showing the reinforcing bars placed between the formwork for building the floor, Figure 6 is a cross-sectional view showing the diamond-like floor with the formwork for constructing the diamond-cut floor removed, and Figure 7 is a cross-sectional view showing the reinforcing bars placed between the formwork for constructing the diamond-shaped floor. FIG. 8 is a perspective view showing the reinforcing bars supported by the support member, FIG. 9 is a partial plan view showing the placed state of the formwork for constructing a diamond-cut floor, and FIGS. 1O to 13 are FIG. 10 is a plan view showing the mounting state of the formwork for constructing a diamond-shaped floor, and FIG. 11(a) and FIG. 11(b) are diagrams showing the present invention separately. A plan view of the formwork, FIG. 12 is a sectional view showing the placed state of the formwork for constructing a diamond-cut floor, and FIG. 13 is a partial plan view showing the placed state of the formwork for constructing a diamond-cut floor. 1a~IC...Formwork for constructing a rhombus floor, 2...Tsuba, 3.
...Top plate, 4...Air hole, 5...Pipe, 6...
Lid, 7... Space, 8... Spacer, 9... Rebar, 11... Support member, 11a... Groove, 12...
Rebar, 13... Concrete, 14... Scaffolding board.

Claims (1)

[Claims] 1. Formwork for constructing a floor arranged in a diamond pattern (1a
~1c), which is formed of resin into a truncated quadrangular pyramid shape or a truncated triangular pyramid shape, and is characterized in that the base end thereof is provided with a flange (2). frame. 2. Formwork for constructing a rhombus floor according to claim 1 (1a to 1c)
The top plate (3) is provided with an air hole (4) through which compressed air flows, a pipe (5) is connected to the air hole (4), and a pipe (5) is connected to the air hole (4). The formwork for constructing a rhombus floor according to claim 1, wherein a lid (6) is placed thereon. 3. After placing the diamond-shaped floor construction formwork (1a to 1c) according to claim 2 in a diamond pattern on the scaffold board (14) for constructing the floor, the formwork (1a to 1c) ) A reinforcing bar (9) supported by a spacer (8) at the bottom of the space (7) formed between
At the same time, a formwork (
A support member (11) having a groove (11a) is arranged so as to span between the support member (11)
Reinforcing bars (12) are placed on top, and then the formwork (1a to 1
c) pour concrete (13) on top, and after the concrete (13) hardens, compressed air is sent to the pipe (5) to separate the formwork (1a to 1c) and the concrete (13); The formwork (1a to 1c) is covered with concrete (
13) A method for constructing a rhombus floor, characterized by releasing from the mold.