JPS6243027B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a concrete stopper used when forming rising parts such as handrails integrally with floors and stairs by pouring concrete, and in which concrete 1 is poured from above and A concrete stopper 4 is removably disposed in a lower side opening 3 of a formwork 2 for forming a rising portion with side openings, and a large number of legs 6 are attached to the lower part of a main body 5 to form a booth 7. This invention relates to concrete stoppers characterized in that they are arranged side by side in a comb-like manner.

Conventionally, a rising part 9 such as a handrail is integrated with the floor 11.
When forming by concrete pouring, as shown in Figure 1a, concrete 1 is first poured into the floor formwork 8, and when the concrete 1 poured into the floor formwork 8 is slightly hardened, the concrete 1 is poured into the floor formwork 8 as shown in Figure 1b. As shown, concrete 1 is placed inside from the upper opening of the formwork 2 for forming the rising part.
As shown in Fig. 1c, a rising part 9 such as a handrail was formed integrally with the floor 11. However, in this conventional example, concrete 1 is first poured onto the floor formwork 8, and then concrete 1 is poured onto the rising part forming form 2, so when pouring concrete 1 onto the rising part forming form 2, When pouring the concrete hose onto the floor formwork 8, it is necessary to place the concrete 1 on the concrete 1 which has not yet hardened, while pouring the concrete 1 into the formwork 2 for forming the rising section. There was a problem in that the work was difficult when moving the pouring hose, and the concrete 1 placed on the floor formwork 8 also became uneven, which had to be leveled later. By the way, we changed the order of the conventional method and first formed the formwork 2 for forming the rising part.
When concrete pouring is started, the concrete 1 flows out from the lower side opening 3 of the formwork 2 for forming the rising part and bulges up as shown in Figure 2, making it difficult to remove this bulge 13. It required a lot of effort.

The present invention was invented in view of the above points, and its purpose is that even if concrete is poured into the formwork for forming the rising part, the concrete flows out from the lower side openings and builds up. It is possible to prevent the concrete from sagging, so there is no problem even if the concrete is poured from the formwork for forming the rising part first and then poured on the formwork for the floor.
A concrete stopper that makes concrete pouring work easier, and because it has a comb-like shape, it can be placed at the lower side opening of the formwork for forming the rising section, straddling the reinforcing bars arranged to prevent concrete from flowing out. It is on offer.

The present invention will be explained in detail below with reference to Examples. FIG. 3 shows an embodiment of the concrete stopper 4 of the present invention, in which a large number of legs 6 are arranged side by side in a comb shape on the lower edge of a long and thin plate-shaped main body 5 with gaps 7 interposed therebetween. be. The main body 5 is provided with a handle portion 14, and although the handle portion 14 is a hole in the embodiment, it may be other than a hole. In the embodiment shown in FIG. 3, as shown in FIG. 4, a concrete stopper 4 is disposed in a lower side opening 3 of a rising part forming form 2 for forming a handrail. At this time, the concrete stopper 4 is temporarily fixed with a wire 15 to the formwork 2 for forming the rising part or the flap corner, or the auxiliary material 1
6 on the outside of the concrete stopper 4, and apply this auxiliary material 16 to the formwork 2 for forming the rising part or the flap angle 1.
7 with a wire 15, but by inserting the concrete stopper 4 from above along the opening 3 without using the wire 15 or the auxiliary material 16 as described above, the upper part of the floor formwork 8 can be temporarily fixed. Rebar 1 placed in
The concrete stopper 4 can be temporarily fixed by the side part of the leg 6 coming into contact with the 8 and being locked. With the concrete stopper 4 disposed in the opening 3 at the lower side of the formwork 2 for forming a rising part in this manner, concrete 1 is poured from the upper opening of the formwork 2 for forming a rising part. Even though there is an opening 3 on the lower side, this opening 3 is provided with a comb-shaped concrete stopper 4, which prevents the concrete 1 from flowing out of the opening 3 and rising. It happens. Even if a vibrator is used here, only a small amount of water will flow out from the opening 3 than the booth 7 between the legs 6, and there will be no large amount of water flowing out and swelling as in the past. It's something that doesn't exist. The concrete stopper 4 is pulled upward when the concrete 1 poured into the formwork 2 for forming the rising part is slightly hardened. After that, concrete 1 is poured onto the floor formwork 8. In this way, the floor 8 and the rising portion 9 are integrally formed of concrete. Figure 7 shows the concrete stopper 4 for the top step of the stairs.
An example is shown. In this case, the hanging length of the legs 6 located on approximately half of one side of the many legs 6 arranged side by side is changed to correspond to the slope of the stairs. FIG. 10 shows a concrete stopper 4 for each step of the staircase, and in this case, the concrete stopper 4 is attached to the lower side opening 3 of the rising part forming form 2 at the side of each step. is arranged to prevent the concrete 1 from flowing out onto each step of the stairs. Further, FIG. 11 shows an example of a concrete stopper 4 used for a staircase landing or the like. In this embodiment, a large number of legs 6 are suspended from the lower edge of the main body 5 via booths 7 in a comb-like shape, and a large number of lateral arms 19 are arranged laterally from the lower edge of the main body 5 between the booths. 〓
They are arranged side by side in a comb shape. The concrete stopper 4 shown in FIG. 11 is used when the formwork 2 for forming a rising part is formed on the formwork 20 for forming a beam, such as a staircase landing, as shown in FIG. The opening at the lower side of the formwork 2 for forming the rising part is closed in a cross-shaped manner by the legs 6 and the horizontal arm 19, and by closing in this way, the concrete 1 is poured into the formwork 2 for forming the rising part. When the concrete 1 is also filled into the beam forming form 20 by flowing the concrete 1 into the beam forming form 20, the opening at the upper corner of the beam forming form 20 communicates with the lower side opening 3 of the rising part forming form 2. The structure is designed to prevent concrete 1 from flowing out and rising. Incidentally, in each of the above embodiments, the pitch (P) of the legs 6 and the horizontal arm 19 is approximately 30.
Set it to about mm. Here, the pitch of about 30 mm was chosen by making the length between the legs 6 longer than the diameter of the reinforcing bars 18 used, which allows the reinforcing bars 18 to be straddled between the legs 6 even though the reinforcement is arranged. This is to prevent gravel, which is the aggregate of concrete 1, from flowing out from the space 6.

In the present invention, as described above, the concrete stopper is removably disposed in the lower side opening of the rising part forming form into which concrete is poured from above and the lower side is open. Since a large number of legs are arranged side by side in a comb shape at the bottom of the main body with intervening booths, even if concrete is poured into the formwork for forming the rising part, the presence of the concrete stopper prevents the concrete from pouring. This prevents concrete from flowing out from the lower side openings and rising up, so even if concrete is poured from the formwork for forming the rising part first and then concrete is poured onto the formwork for the floor, nothing will happen. There are no problems and the concrete pouring work becomes easier, and the work of removing the concrete that has flowed and bulged up, or the work of re-leveling the rough surface of the concrete poured on the floor formwork later. It is not necessary,
In addition, since a large number of legs are arranged side by side in a comb-like pattern through the booth, reinforcing steel reinforcement is used to install the concrete stopper at the lower side opening of the formwork for forming the rising section. The concrete stopper can be placed across the opening, ensuring that the concrete stopper is placed in the opening and preventing concrete from flowing outside.

The concrete stopper 4 of the present invention is the first
2 Concrete the sloped roof as shown in Figure 1.
It can also be used when forming by hitting with a hammer. That is, as shown in FIG. 12, reinforcing bars 18 are placed on the roofing formwork 20, and the concrete stopper 4 is erected on the roofing formwork 20 so as to straddle the reinforcing bars 18, and the concrete 1 is placed in this state. By pouring, a sloped roof is formed little by little from the top (or from the bottom), and by doing this, even if the slope is sloped, the concrete 1 will not flow downward and the concrete will be placed at the correct slope. It can be done.

[Brief explanation of the drawing]

Figures 1a, b, and c are explanatory views showing the order of concrete pouring in a conventional example, Figure 2 is an explanatory view showing another conventional example, and Figures 3a and b are an embodiment of the concrete stopper of the present invention. Front and side views of Figure 4a,
b and c are explanatory diagrams showing the order of concrete pouring using the concrete stopper of the present invention, Fig. 5 is an enlarged sectional view of the X part of Fig. 4 a, and Fig. 6 is an illustration showing the use of the concrete stopper. Fig. 7 is a front view of the concrete stopper used for the top step of stairs, Fig. 8 is a perspective view of the above in use, Fig. 9 is a schematic front view of the above in use, Fig. 10 The figure is a front view of a concrete stopper used for stairs, Figures 11a and 11b are perspective views and side views of a concrete stopper for stair landings, and Figure 12 is a concrete stopper of the present invention used to form a roof with a slope. This is an explanatory diagram of an example used,
1 is concrete, 2 is formwork for forming the rising part, 3
4 is an opening, 4 is a concrete stopper, 5 is a main body, 6 is a leg, and 7 is a small gap.

Claims (1)

[Claims] 1. A concrete stopper that is removably disposed in the lower side opening of a rising part forming form into which concrete is poured from above and the lower side is open, and has a number of legs at the bottom of the main body. A concrete stopper is characterized in that the concrete stoppers are arranged side by side in a comb-like manner with intervening booths.