JPH10231524A - Foundation form structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent separation of a base form by connecting a spacer fitted to a rising spacer, to the base form arranged below, placing concrete, and after the concrete is hardened to a certain extent, placing concrete also in the rising form. SOLUTION: The upper end of a spacer 12 provided with a bottom plate at the lower end is provided with a support piece for fixing a rising form 14 with metal plates arranged parallel and with the outer periphery framed by reinforcing members 16. A bent piece 20 formed at a base form 18 is provided with a plurality of first holes for connecting second holes provided in connecting member 22. The rising form 14 is fitted to the spacer 12 with a reinforcement 36 arranged in a place where foundation form structure is formed, and the rising form 14 is fixed to the base form 18 using the connecting member 22. Concrete is placed to specified height from between the rising form 14 and the base form 18, and after the concrete is hardened to a certain extent, concrete is placed in the rising form 14. Separation of the base form 18 is thereby prevented so as to improve accuracy of a foundation level.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation form structure,
More particularly, the present invention relates to a base form structure for forming a fabric base used under an outer wall, for example, including a base form and a rising form provided upright thereon for placing concrete.

[0002]

2. Description of the Related Art In a conventional basic formwork structure 1 shown in FIG.
The rising formwork 3 is attached so as to stand upright on the opposing base formwork 2 having an L-shaped cross section. And at the time of construction, concrete is poured from the upper end of the rising formwork 3,
The base portion and the rising portion of the concrete fabric foundation are integrally formed.

[0003] Also, between the facing base form 2,
The base spacing bar 4 is disposed on the upper side, and the base bottom plate 5 is disposed on the lower side, and the distance between the base forms 2 is defined.

[0004]

In the prior art, when the concrete is poured, the pressure acts on the base formwork 2, the base formwork 2 rises, and the rising formwork 3 is pushed up together. In some cases, variation occurred. Therefore, it is necessary to add a means for preventing the base form 2 and the rising form 3 from rising.

Therefore, in the prior art, the base form 2
Since the concrete can be cast integrally with the rising formwork 3, the strength of the cast concrete and the accuracy of the thickness of the base portion can be improved, but a floating prevention mechanism is additionally provided. Must be constructed,
When the base form 2 is removed, it is difficult to lift the base form 2 to remove the base form 2, so that the base form 2 is distorted and the damage is severe.

SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide a basic formwork structure that does not lift up as a whole when concrete is poured and that allows the base formwork to be easily removed.

[0007]

SUMMARY OF THE INVENTION The present invention provides a rising formwork mounted on a spacer at a predetermined position, a base formwork disposed below the rising formwork and outside the rising formwork, and a base formwork and a riser. A basic formwork structure including a connecting member for fixedly connecting the formwork to the formwork.

[0008]

The base form is fixed to the outside of the rising form using the connecting member, and concrete is poured from the space between the rising form and the base form to a predetermined height in the base form and hardened to some extent. Later, concrete is poured into the rising formwork. Therefore, the force which rises by the pressure of the concrete does not act on the base formwork.

Further, when the connecting member is removed after the concrete is cast, the fixed connection between the base form and the rising form is released.

[0010]

According to the present invention, it is possible to prevent the entire structure from being lifted at the time of placing concrete, so that the accuracy of the foundation level can be improved. Further, the base form can be easily removed without damage such as distortion. The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0011]

1 shows a basic formwork structure 10 of this embodiment shown in FIG.
Includes a rising formwork 14 that is mounted in place on the spacer 12. With reference to FIG.
And a bottom plate 1 at the lower end of the main body 12a.
2b is attached, and a support piece 1
2c are formed, and the rising formwork 14 is mounted on the support piece 12c. As shown in FIG. 3, the rising mold frame 14 is a metal plate made of steel or the like and arranged in parallel with each other, and its outer periphery is framed by a reinforcing material 16. A plurality of connecting holes 16a for connecting another rising formwork 14 are provided.

A base form 18 is disposed below the rising form 14 and outside the rising form 14. The base formwork 18 is a metal plate made of steel or the like, like the rising formwork 14, and its upper end is bent outward to form a bent piece 20. Hole 20
a (FIG. 4) are provided at predetermined intervals. Base formwork 1
8 and the rising formwork 14 are fixedly connected by a connecting member 22. The connecting member 22 shown in FIG. 4 is formed by bending a strip-shaped metal piece at an obtuse angle, a cylindrical body 22a is fixed to the tip of one piece, and a plurality (three in this embodiment) is attached to the other piece. The second hole 22b is provided.

One cylindrical portion 22a of the connecting member 22 is fixed to the position of the connecting hole 16a of the reinforcing member 16 of the rising mold frame 14 using a joint pin 24 having a shape shown in FIG. The joint pin 24 has a rod-shaped straight portion 24.
a and the U-shaped portion 24b. Then, when the straight portion 24a is inserted into the connecting hole 16a of the adjacent reinforcing member 16 and the cylindrical body 22a of the connecting member 22 in this order,
When the reinforcing member 16 and the connecting member 22 are fixed, and the U-shaped portion 24b is rotated around the connecting hole 16a, and the adjacent reinforcing member 16 is sandwiched, the rising formwork 14 is connected in the length direction.

On the other hand, in the other piece of the connecting member 22, the second hole 22b provided in accordance with the position of the base form 18 is matched with the first hole 20a provided in the bent piece 20 of the base form 18, It is fixed using a wing bolt 26a and a nut 26b. Therefore, the interval of the base formwork 18 is adjustable, and can cope with the ground strength of the ground. Basic formwork structure 10
When forming the base, first, as shown in FIG. 1, a groove 30 is excavated at a place where the basic formwork structure 10 is to be formed, a split stone 32 is laid at the bottom of the groove 30, and discarded on the upper surface of the split stone 32 The concrete 34 is cast. Next, as shown in FIG. 2, the spacer 12 is arranged at a predetermined position on the waste concrete 34,
Further, a reinforcing bar 36 is arranged on the spacer 12. continue,
As shown in FIG. 1 and FIG.
The rising frame 14 is mounted on 2c, and the connecting holes 16a of the reinforcing member 16 are sequentially connected using the joint pins 24.

A base form 18 is arranged below the rising form 14 and outside the rising form 14, and both ends in the longitudinal direction of the base form 18 are overlapped with each other so that the first holes 20a are aligned with each other. Let it. Subsequently, the connection hole 16 of the reinforcing member 16 of the rising formwork 14 is formed in the cylindrical body 22a of the connection member 22.
Then, the straight portion 24a of the joint pin 24 inserted into the joint pin 24a is inserted (FIG. 4). Further, the second hole 22b of the connecting member 22
Is aligned with the first hole 20a of the base formwork 18,
The base formwork 18 and the rising formwork 14 are fixedly connected with each other by using a wing bolt 26a and a nut 26b.

When forming a fabric foundation by casting concrete in the foundation form structure 10 thus formed, first, between the rising form 14 and the base form 18 (between the connecting members 22). Then, concrete is driven to a predetermined height in the base formwork 18. At this time, since the space between the base formwork 18 and the rising formwork 14 is open, the pressure when the concrete is driven does not act on the rising formwork 14. In addition, a plurality of reference holes 18a for driving concrete at a predetermined height are provided in the base formwork 18 at appropriate intervals. Then, after a predetermined time has passed, the base form 1
With the concrete in the inside 8 hardened to some extent, concrete is driven from above the rising formwork 14 using a pump. At this time, since the concrete in the base formwork 18 is hardened to some extent, even if the concrete is poured into the rising formwork 14, the concrete already placed in the base formwork 18 does not rise. However, since the time difference between the casting of the concrete into the base formwork 18 and the casting of the concrete into the rising formwork 14 is very small and can be completed in a day, use concrete materials of the same quality. Can be. Therefore, the integrity of the base portion and the rising portion of the cast fabric foundation is not impaired. After the concrete is hardened, the connecting member 22 is removed, and the rising formwork 14 is removed.
Then, the base formwork 18 is removed, and the groove 30 is backfilled with earth and sand.

According to this embodiment, the pressure does not act on the inside of the base formwork 18 at the time of placing the concrete, so that the whole body does not rise, so that the accuracy of the foundation level can be improved. In addition, since the base formwork 18 is arranged parallel to the outside of the rising formwork 14, it can be easily removed, and distortion and damage can be prevented. In addition, since consumables such as a base spacing bar and a base bottom plate as in the related art are unnecessary, costs can be reduced. In addition, both ends of the base form 18 are conventionally overlapped with each other by a predetermined length, or otherwise abutted in the case of a wooden base form, whereas the first holes 20a of the bent piece 20 coincide. As described above, the connection can be performed by overlapping and fixing, so that the accuracy in the length direction of the base portion of the cloth base can be increased by the reference length between the first holes 20a.

Further, since the second hole 22b provided in the connecting member 22 is formed as a plurality of holes so as to be selectively used according to the position of the base form 18, the width of the base form 18 is adjusted according to the ground strength of the ground. Can be easily adjusted. In this example,
From the second hole 22b on the outside of the fixed connecting member 22 to the inside, it is possible to cope with the ground strength of the ground of 3 t / m ² , 4 t / m ² , 5 t / m ² or more.

In the above-described embodiment, the case where the rising frame 14 made of metal is used is shown.
As shown in FIG. 5, a wooden rising formwork 40 can be used. In this case, the mounting piece 42a is attached to the tip of the connecting member 42.
Is provided, a nail 44 is inserted into a hole provided in the mounting piece 42a, and the nail 44 is driven into the reinforcing member 40a of the wooden rising formwork 40, thereby fixing the rising formwork 40 and the connecting member 42.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is a perspective view showing a state before forming the embodiment of FIG. 1;

FIG. 3 is a perspective view showing the embodiment in FIG. 1;

FIG. 4 is a perspective view showing a method of attaching a connecting member in FIG.

FIG. 5 is an illustrative view showing a joint pin for fixing the connecting member to the rising formwork and connecting the rising formwork;

FIG. 6 is a perspective view showing a method of attaching a connecting member to a wooden rising formwork in FIG. 4;

FIG. 7 is an illustrative view showing a conventional technique;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Base formwork structure 12 ... Spacer 14, 40 ... Rise formwork 16, 40a ... Reinforcement 18 ... Base formwork 20a ... 1st hole 22, 42 ... Connection member 22b ... 2nd hole

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Isao Tokuda Kubota House Co., Ltd. 3-12-12 Minamisenba, Chuo-ku, Osaka-shi

Claims (2)

[Claims] 1. A rising formwork attached to a predetermined position on a spacer, a base formwork disposed below the rising formwork and outside the rising formwork, and the base formwork and the rising formwork are provided. A basic formwork structure comprising a connecting member for fixedly connecting. A first hole provided in an upper end of the base form and a second hole provided in the connection member, the connecting member is attached to the base form; The base formwork structure according to claim 1, wherein the holes are selectively used depending on the position of the base form and include a plurality of holes.