JP2577145Y2 - Width stop member for base formwork construction for housing foundation - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a width fixing member for fixing a base form unit used in a method of constructing a base form for a housing foundation using a base form unit made of a metal lath. is there.

[0002]

2. Description of the Related Art In the construction of cloth foundations for houses, wooden and steel base forms are used. These are installed at the place where the cloth foundation is cast, and after the concrete is cast therein and hardened, they are removed and used repeatedly.

[0003]

However, in such a method for constructing a formwork for a fabric foundation, it takes time to attach and remove the formwork when constructing the formwork.

That is, a steel form is stopped by driving a pile or a wooden form is fixed by nailing a piece of wood so that the installed form is not moved. At the time of removal, it is necessary to remove these, so that the removal work is troublesome.
Also, if you can not fix it only with a pile or a piece of wood,
Although it is made to fix from both sides with soil etc., in this case, the work of removing the formwork becomes more troublesome. Furthermore, since concrete and the like adhere to the removed formwork, it is necessary to remove them, but such work is troublesome and troublesome. Furthermore, especially in the case of a steel formwork, since the weight of one sheet is considerable, the installation work is heavy labor. In addition to this, it is necessary to fix the plate-shaped formwork at a target angle at the site in order to form the corners of the formwork, but such work is troublesome.

[0005] The applicant of the present application has proposed a method of forming a base form using a base form unit made of a metal lath in order to solve such a problem of the conventional form forming method for a housing foundation. doing. In this construction method,
In order to prevent the space between the base forms installed in the opposed state from spreading at the time of casting concrete, they are connected by a width-stopping member.

An object of the present invention is to improve the width-stopping member, and proposes a width-stopping member capable of fixing the base form unit using the width-stopping member by a simple operation. Is to do.

[0007]

According to the present invention, a base form is formed by using a base form unit made of a metal lath, and these base forms are spread so that the space between the opposing base forms is not widened when concrete is poured. The width-stopping member used for a method of constructing a base formwork for a house foundation by being connected by a stop-down member, wherein the width-stopping member has the following configuration.

That is, the width-stopping member according to the present invention comprises a bottom plate, side plates rising perpendicularly upward from both sides of the bottom plate portion, and standing pieces vertically rising from the bottom plate portion inside each side plate portion. And With this configuration, the base form unit can be inserted from above between each side plate and the upright piece.

Further, each side plate has a bent piece which can be bent inward at an upper end portion thereof. A hook portion bent at right angles inward is formed at the tip of the bent piece. With this configuration, after the base form unit is inserted between the side plate and the rising piece, the bent piece is bent inward, so that the upper end of the base form unit inserted by the hook formed at the tip of the bent part. The side is fixed.

In this case, if a frame installation member capable of installing a formwork of a foundation rising portion is attached to the center portion of the bottom plate of the width fixing member of the present invention, installation of these formwork is facilitated. It is preferable because it can be performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a base formwork for a base of a house cloth, which is installed by using a width fixing bracket according to an embodiment of the present invention. The base form 1 includes a flat form unit 2 having a fixed length, a corner form unit 3, and a metal fitting 4 for stopping the form unit 2. A frame installation metal fitting 5 for installing a formwork of a rising portion of the cloth foundation is attached to the width fixing metal fitting 4 of this example.

FIG. 2 shows only the mold unit 2 taken out. As shown in this figure, the form unit 2 of this example has ribs 21a at both sides and the center in the longitudinal direction.
The ribs 21 are formed from running rib laths 21b and 21c. In order to ensure the rigidity of the rib lath 21 in the out-of-plane direction, the outer side surface 2a of the rib lath 21 is formed along the center rib 21b as a horizontal reinforcing member, similarly shaped bars 26a, 26a.
b is joined by spot welding.

Here, both side portions in the longitudinal direction of the form unit 2 are joint portions 27a and 27b for overlapping with end portions of the form units to be arranged adjacent to each other.
FIG. 3 shows only the corner form unit 3 taken out. The unit 3 is formed by bending a rib lath 31 at, for example, a right angle. A horizontal reinforcing member is joined to a longitudinal outer surface 3a along a central rib by spot welding. Further, both ends are joint portions 37a and 37b for overlapping with end portions of the form units arranged adjacent to each other.

Next, FIG. 4 shows the width fixing fitting 4 of this embodiment. The width fixing bracket 4 is formed by bending a long steel plate into a U-shape. The width-stopping metal fittings 4 stand upright from the bottom plate 41, the left and right side plates 42, 43 standing at right angles from both sides, and the upper portion formed by punching the bottom plate at an inner position of each side plate. It has standing pieces 44 and 45. Side plate 42
The form units 2 and 3 can be inserted between the and the upright pieces 44 from above. Similarly, the side plate 43
Form units 2 and 3 from above,
Can be inserted.

From the upper end of the side plate 42, the side plate 4
A v-shaped groove 421 is formed horizontally on the outer surface below by a distance between 2 and the standing piece 44 so that it can be easily bent inward at this position. That is, a portion above the groove is a bent piece 422 that can be bent in a state indicated by an imaginary line in the figure. This bent piece 42
The upper end of 2 is a hook part 4 bent at a right angle toward the inside
23 are formed. Similarly, a v-shaped groove 431 is formed in the other side plate 43, and an upper portion thereof is a bent piece 432 that can be bent inward. A hook 433 is formed at the upper end of the bent piece 432 so as to be bent inward at a right angle.

Next, at the center of the upper surface of the bottom plate 41 of the width fixing metal member 4, a frame mounting metal member 5 for mounting the lower end of the formwork at the rising portion from the base of the cloth base is joined by spot welding. ing. This frame mounting bracket 5 is
A steel plate is bent to form a U-shaped concave gate at the center. That is, the frame installation metal fittings 5 are
1 and 52, and an upper plate 53 connecting the upper ends thereof. The central portion of the upper plate 53 is bent into a U-shape to form a support surface 531 for the base rebar, and frame installation surfaces 532 and 533 are formed on the left and right sides of the U-shaped bent portion. . The lower ends of both side plates 51 and 52 are fixed to the bottom plate 41 of the width fixing fitting by spot welding or the like.

Here, the frame-mounting fitting 5 can also be formed by bending a round bar. FIG. 7 shows a width-stopping bracket to which a frame-mounting bracket formed by a round bar is attached.

Next, a description will be given of a method of constructing a form using the above components. First, after performing the root cutting for installing the fabric foundation, the width fixing metal fittings 4 shown in FIG. 4 are installed at predetermined intervals, and thereafter, the flat form unit 2 and the corner form 3 are attached to each width. The base formwork 1 is configured by being installed while being inserted into the stopper fitting 4. At this time, the form units arranged adjacent to each other are connected to their joint portions 27.
a, 27b, 37a, and 37b are placed in a state of being overlapped with each other, and this joint portion is inserted into each of the width fixing brackets 4 exactly.

Next, as shown in FIG. 5, the bent pieces 422 and 432 of each width fixing metal member 4 are bent inward at right angles. In this way, the upper end of the form unit inserted between the side plate 42 and the upright piece 44 is sandwiched between the hook portion 423 of the bent bent piece 422 and the side plate 42 and fixed therebetween. You. Similarly, the upper end of the form unit inserted between the side plate 43 and the standing piece 45 is connected to the hook portion 433 of the bent piece 432.
And between the side plate 43 and is fixed between them.

Thereafter, after the reinforcing bars for the foundation are arranged, as shown in FIG. 6, the cloth is placed on the installation surfaces 532, 533 of the frame installation metal fittings 5 attached to the width fixing metal fittings 4. The formwork 6 and 7 at the rising part of the foundation are installed. After this, concrete is poured from above. The installed base form 1 and width fixing metal fittings 5 are embedded together with concrete as they are.

The base form of the present embodiment thus configured is
Since it is embedded as it is, there is no need to remove it after hardening the concrete unlike the conventional base formwork, so that there is no need to remove it.

Further, since the out-of-plane rigidity is ensured by the reinforcing member made of the deformed steel bar, the form units 2 and 3 are not bent by the pressure at the time of placing the concrete. Further, since the formwork is prevented from being spread at the time of placing the concrete by the width fixing fitting 4, it is not necessary to perform pile driving or earth retaining as in the conventional case. Further, since the form units 2 and 3 are formed from rib lath, there is an advantage that water is easily drained through the rib lath after concrete is cast.

On the other hand, the width fixing metal fitting 4 of this embodiment can be installed simply by inserting it into the formwork unit 2 from above, so that there is an advantage that the mounting operation is extremely simple. In particular, in the present example, there are bent pieces 422 and 432 on both sides of the width fixing fitting 4, and there is an advantage that the inserted formwork unit can be fixed by a simple operation of bending these pieces inward. In addition, since such a bent piece extends straight before use, it is convenient because it does not get in the way.

In addition to this, the mounting bracket 5 for mounting the formwork at the rising portion of the cloth base is attached to the width-stopping metal fitting 4, so that the setting of the formwork at this rising portion is easy. There is also an advantage that it can be performed.

In this embodiment, the form unit is formed by using rib laths. However, it is a matter of course that metal laths such as flat laths, cobras and corrugated laths may be used instead. Further, a wire mesh lath may be used instead of such an expanded lath. The term "metal lath" in the present invention is used in a broad sense including both expanded lath and wire mesh lath.

The diameter of the deformed steel bar used as the reinforcing member may be determined according to the purpose of use.
Ordinary round bars can be used instead of deformed bars. Alternatively, other long metal fittings may be used.

Although the corner form has been described as being bent at a right angle, a corner form having an angle corresponding to the shape of the corner of the fabric base to be installed can be used. If such a corner form is prepared in advance by factory processing, work on site can be simplified.

On the other hand, the width stopper 4 can also be formed using a material other than a steel plate. The bent piece 42
In this example, a v-groove is formed in order to form 2,432, but instead, for example, by forming a hole,
The bending position may be defined.

[0029]

As described above, according to the present invention, in a method of constructing a base form of a foundation for a house using a form unit composed of a metal lath, spread between installed form units is prevented. The width-stopping member has a structure in which a bent piece that can be bent inward is formed at the upper end portion of both side plates, and the upper end of the inserted formwork unit can be fixed by bending the bent piece. . Therefore, according to the present invention, there is an effect that the formwork unit can be fixed to the width stopping member by a simple operation. In addition, in the case of adopting a configuration in which a frame setting member for setting the formwork of the rising portion of the cloth foundation is attached to the width stopping member, it is possible to easily set the formwork of the rising portion of the cloth foundation. The effect is also obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a base formwork of a housing cloth foundation installed according to the method of the present invention.

FIG. 2 is a perspective view showing a mold unit of FIG. 1;

FIG. 3 is a perspective view showing a corner form unit of FIG. 1;

FIG. 4 is a front view showing the width fixing fitting of FIG. 1;

FIG. 5 is a front view showing a state in which the upper end of a form unit inserted into the width fixing fitting of FIG. 4 is fixed.

FIG. 6 is a front view showing a state in which a mold is installed on a frame installation metal fitting of the width fixing metal fitting of FIG. 5;

FIG. 7 is a perspective view showing another example of the width fixing fitting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base formwork 2 ... Formwork unit 3 ... Corner formwork unit 4 ... Width stop fitting 41 ... Bottom plate 42, 43 ... Side plate 44, 45 ... Standing piece 421, 431 ... v-groove 422, 432 ... bent piece 423, 433 ... hook part 5 ... frame mounting bracket 532, 533 ... frame mounting surface

Claims (2)

(57) [Scope of request for utility model registration] 1. A base form is formed by using a base form unit made of a metal lath, and these base forms are connected to each other by a width-stopping member so that the space between the opposing base forms is not widened when concrete is poured. The width-stopping member used in a method of constructing a base formwork for a housing foundation, the width-stopping member includes a bottom plate, and a side plate that rises at right angles upward from both sides of the bottom plate portion. An upright piece that vertically rises from the bottom plate portion inside each side plate portion, and the base form unit can be inserted from above between the side plate and the upright piece,
Each of the side plates is formed with a bent piece that can be bent inward at an upper end portion thereof,
A hook portion bent at a right angle toward the inside is formed at the tip of the bent piece, and after inserting the base form unit between the side plate and the standing piece, the bent piece is bent inward. A width-stopping member, wherein an upper end side of the base form unit inserted by a hook formed at a tip of the bent portion can be fixed. 2. The width stopping member according to claim 1, wherein a form setting member for setting a form of a foundation rising portion is disposed at a center portion of the bottom plate.