JPH0640196U - Width stop member for base formwork construction for housing foundation - Google Patents

Abstract

(57) [Summary] [Purpose] A base formwork unit made of metal lath is used to form a base formwork, and the base formwork units facing each other are prevented from expanding during concrete pouring by using width-locking members. In a method of constructing a base formwork for a housing foundation by connecting them, to easily fix the formwork unit with a width-stop member. [Structure] Side plates 42 and 43 of the width-fixing member 4 and the standing piece 4
The base formwork units 2 and 3 can be inserted from above between 4 and 45. Each of the side plates has a bending piece 4 that can be bent inward at a portion on the upper end side thereof.
22 and 432 are formed, and the hook portion 4 bent at a right angle toward the inside is formed at the tip of the bent piece.
23 and 433 are formed. After inserting the base formwork unit between the side plate and the upright piece, by bending the bending piece inward, the upper end side of the inserted base formwork unit is fixed by the hook portion formed at the tip of the bending portion. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a width stop member for fixing a base formwork unit used in a method of constructing a base formwork for a house foundation using a base formwork unit composed of a metal lath.

[0002]

[Prior art]

 Wooden and steel base formwork are used in the construction of residential fabric foundations. These are installed at the place where the fabric foundation is to be placed, and after concrete is placed and hardened in it, they are removed and used repeatedly.

[0003]

[Problems to be solved by the device]

 However, in such a method of constructing a form for a cloth foundation, it takes a lot of time to install and remove the form in constructing these forms.

That is, in order to prevent the installed formwork from moving, the steel formwork is stopped by driving a pile, or the wooden formwork is fixed by nailing a piece of wood, etc. Since it is necessary to remove these when removing, it takes time and effort to remove them. In addition, when it is not possible to fix with just piles or wood pieces, it is fixed with soil from both sides, but this makes the work of removing the formwork more troublesome. Furthermore, since concrete etc. adheres to the removed formwork, it is necessary to remove them, but such an operation is troublesome and complicated. Furthermore, especially in the case of steel formwork, the installation work is a heavy labor, since the weight of one piece is considerable. In addition to this, it is necessary to fix the plate-shaped formwork at the target angle in the field in order to form the corner portion of the formwork, but such work is troublesome.

The present applicant proposes a method of constructing a base formwork using a base formwork unit composed of a metal lath in order to solve the problems of the conventional formwork construction method for a house foundation. is doing. In this construction method, the base form frames installed so as to face each other are connected by a width-locking member so that they do not spread during concrete pouring.

An object of the present invention relates to an improvement of this width-stop member, and a width-stop member capable of fixing a base form unit using the width-stop member by a simple operation is provided. To propose.

[0007]

[Means for Solving the Problems]

 The present invention constructs a base formwork using a base formwork unit composed of a metal lath, and connects the opposing base formwork with a width stop member so that the base formwork does not spread during concrete pouring. The width-stopping member used for the method of constructing the base formwork for a housing foundation, and the width-stopping member has the following structure.

That is, the width-preventing member of the present invention comprises a bottom plate, side plates that are vertically raised from both sides of the bottom plate portion, and upright pieces that are vertically raised from the bottom plate portion inside each side plate portion. And have. With this configuration, the base formwork unit can be inserted from above between each side plate and the upright piece.

Further, each side plate has a bending piece that can be bent inward at the upper end side portion. At the tip of this bent piece, there is formed a hook portion that is bent inward at a right angle. With this configuration, after inserting the base formwork unit between the side plate and the rising piece, by bending the bending piece inward, the base formwork unit inserted by the hook part formed at the tip of the bending part. The upper end side of is fixed.

If a frame installation member capable of installing the formwork of the foundation rising portion is attached to the central portion of the bottom plate of the width-stop member of the present invention, the installation of these formworks can be facilitated. This is preferable because it can be performed.

[0011]

【Example】

 FIG. 1 shows a base formwork for a housing cloth foundation, which is installed using a metal fitting for a width stop according to an embodiment of the present invention. The base mold 1 is composed of a flat plate mold unit 2 having a constant length, a corner mold unit 3, and a width-stop fitting 4 of the mold unit 2. A frame mounting metal fitting 5 for mounting a formwork of the rising portion of the cloth foundation is attached to the width-fastening metal fitting 4 of this example.

FIG. 2 shows only the form unit 2 described above. As shown in this figure, the mold unit 2 of the present example is formed of rib laths 21 having ribs 21a, 21b, 21c running on both sides and the center in the longitudinal direction. In order to secure the rigidity of the rib lath 21 in the out-of-plane direction, the deformed steel bars 26a and 26b, which are also horizontal reinforcing members, are joined to the outer surface 2a along the central rib 21b by spot welding. Has been done.

Here, both sides in the longitudinal direction of the form unit 2 are joint parts 27a and 27b for overlapping with the end parts of the form units adjacently arranged. In FIG. 3, only the corner mold unit 3 is taken out and shown. The unit 3 is formed by bending a rib lath 31 at a right angle, for example, and a horizontal reinforcing member is joined by spot welding along a central rib to an outer surface 3a in the longitudinal direction. Further, both ends are joint portions 37a and 37b for overlapping with the end portions of the formwork units adjacently arranged.

Next, FIG. 4 shows the width-stop fitting 4 of this example. The width-stop fitting 4 is formed by bending a long steel plate into a U-shape. The width-preventing metal fitting 4 includes a bottom plate 41, left and right side plates 42 and 43 standing at right angles from both sides, and an upper vertical rise formed by punching the bottom plate at an inner position of each side plate. It has the standing pieces 44 and 45 which are standing. Between the side plate 42 and the standing piece 44, the above-mentioned form units 2 and 3 can be inserted from the upper side. Similarly, the formwork units 2 and 3 can be inserted between the side plate 43 and the upright piece 45 from the upper side.

A v-shaped groove 421 is horizontally formed on an outer surface of the side plate 42, which is located below the upper end of the side plate 42 by a distance between the side plate 42 and the standing piece 44, and can be easily bent inward at this position. It has become. That is, a portion above the groove is a bending piece 422 that can be bent in a state indicated by an imaginary line in the drawing. A hook portion 423 is formed at the upper end of the bent piece 422 and is bent inward at a right angle. Similarly, on the other side plate 43, a v-shaped groove 431 is formed, and an upper portion thereof is a bending piece 432 that can be bent inward. A hook portion 433 is formed at the upper end of the bending piece 432 and is bent inward at a right angle.

Next, at the center of the upper surface of the bottom plate 41 of the width-stop fitting 4, a frame-installing fitting 5 for installing the lower end of the formwork at the rising portion from the base of the cloth foundation is joined by spot welding. Has been done. The frame installation metal fitting 5 is formed by bending a steel plate and has a gate shape in which the center is depressed in a U shape. That is, the frame installation fitting 5 has both side plates 51, 52 and an upper plate 53 connecting the upper ends thereof. The central portion of the upper plate 53 is bent in a U-shape to form a support surface 531 for the basic rebar, and frame installation surfaces 532 and 533 are formed on the left and right of the U-shaped bent portion. . The lower ends of the side plates 51 and 52 are fixed to the bottom plate 41 of the width-stop fitting by spot welding or the like.

Here, the frame installation fitting 5 can also be configured by bending a round bar. FIG. 7 shows a width stop metal fitting to which a frame mounting metal fitting formed by a round bar is attached.

Next, the formwork construction method of this example using each of these parts will be described. First, after performing root cutting for the cloth foundation installation, the width-stop metal fittings 4 shown in FIG. 4 are installed at predetermined intervals, and then the flat plate-shaped frame unit 2 and the corner frame 3 are The base formwork 1 is constructed by installing the metal fittings 4 while inserting them into the metal fittings 4. At this time, the mold units placed adjacent to each other install the joint portions 27a, 27b, 37a, 37b in a state of being overlapped with each other, and the joint portions are just attached to the purse stop fittings 4. To be plugged in.

Next, as shown in FIG. 5, the bending pieces 422 and 432 of each width-fastening metal fitting 4 are bent inward at a right angle. By doing so, 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 folded bending piece 422 and the side plate 42, and between them. Fixed. Similarly, the upper end of the formwork unit inserted between the side plate 43 and the upright piece 45 is sandwiched between the hook portion 433 of the bent folding piece 432 and the side plate 43, and fixed between them. To be done.

After this, after arranging the reinforcing bars for the foundation, as shown in FIG. 6, cloth is placed on the installation surfaces 532, 533 of the frame installation metal fitting 5 attached to the width stop metal fitting 4. Set up formwork 6 and 7 for the rising part of the foundation. After this, concrete is poured from above. The installed base formwork 1 and the width-stop fitting 5 are directly embedded together with the concrete.

Since the base formwork of the present example configured in this way is embedded as it is, it is not necessary to remove it after hardening of concrete unlike the conventional base formwork, and thus the labor of removal is unnecessary.

Further, since the out-of-plane rigidity is secured by the reinforcing member made of the deformed steel bar, the mold units 2 and 3 are not bent by the pressure at the time of concrete driving. Furthermore, since the formwork is prevented from spreading during the concrete pouring by the width stop metal fitting 4, it is not necessary to piling or earth stopping as in the conventional case. Furthermore, since the formwork units 2 and 3 are formed of rib laths, there is also an advantage that water can be easily drained through the rib laths after concrete casting.

On the other hand, the width-stop fitting 4 of this example can be installed by simply inserting it into the mold unit 2 from above, and therefore has the advantage of being extremely easy to install. In particular, in this example, bending pieces 422 and 432 are provided on both sides of the width-stop fitting 4, and the advantage is that the inserted formwork unit can be fixed by a simple work of bending these inside. is there. Moreover, since such a bent piece extends straight before use, it is convenient because it does not get in the way.

In addition to this, since the width-fixing metal fitting 4 is provided with a frame-installing metal fitting 5 for installing the formwork of the rising part of the cloth foundation, the formwork of the rising part is installed. There is also the advantage that it can be done easily.

In this example, the form unit is formed by using the rib lath, but it is needless to say that a metal lath such as a flat lath, a cobra or a corrugated lath may be used instead. Further, a wire mesh lath may be used instead of such an expanded lath. In the present invention, the term "metal lath" 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 steel may be used instead of the deformed steel bar. Alternatively, other long metal fittings may be used.

As the corner formwork, the one bent at a right angle has been described, but a corner formwork that is angled according to the shape of the corner portion of the cloth foundation to be installed can be used. If such a corner formwork is prepared in advance by factory processing, the work in the field becomes easy.

On the other hand, the width stop fitting 4 can also be formed using a material other than a steel plate. Further, although the v-groove is formed in this example to form the bending pieces 422 and 432, instead of this, the bending position may be defined by making a hole, for example.

[0029]

[Effect of device]

 As described above, in the present invention, in the method of forming the base formwork of the residential foundation by using the formwork unit made of the metal lath, it is possible to prevent the spread between the installed formwork units. As the width-stop member, a folding piece that can be folded inward is formed on the upper end portions of both side plates, and the upper end of the inserted mold unit can be fixed by bending the bending piece. Therefore, according to the present invention, there is an effect that the form unit can be fixed to the width-stop member by a simple operation. In addition, if a structure is used in which a frame installation member for installing the formwork at the rising portion of the cloth foundation is attached to the width-stop member, it is said that the formwork at the rising portion of the cloth foundation can be easily installed. The effect is also obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a base formwork of a residential cloth foundation installed by the method of the present invention.

2 is a perspective view showing the form unit of FIG. 1. FIG.

3 is a perspective view showing the corner frame unit of FIG. 1. FIG.

FIG. 4 is a front view showing the width-stop fitting of FIG.

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

6 is a front view showing a state in which a mold is installed on the frame-installing metal fitting of the width-fastening metal fitting shown in FIG.

FIG. 7 is a perspective view showing another example of a width-stop fitting.

[Explanation of symbols]

 1 ... Base formwork 2 ... Formwork unit 3 ... Corner formwork unit 4 ... Width stop metal fitting 41 ... Bottom plate 42, 43 ... Side plate 44, 45 ... Standing piece 421, 431 ... V-groove 422, 432 ... Bending piece 423, 433 ... Hook part 5 ... Frame installation metal fitting 532, 533 ... Frame installation surface

Claims (2)

[Scope of utility model registration request] 1. A base formwork unit made of a metal lath is used to form a base formwork, and the base formwork units facing each other are connected by a width-stop member so that the base formwork does not spread during concrete pouring. The width-stop member used in the method of constructing a base formwork for a house foundation, wherein the width-stop member is a bottom plate, and side plates that are raised at right angles from both sides of the bottom plate portion, There is a standing piece that rises vertically from the bottom plate portion inside each side plate portion, and between the side plate and the standing piece, the base formwork unit can be inserted from above,
Each of the side plates, a bending piece that can be bent inward is formed at the upper end side portion thereof,
A hook portion bent at a right angle toward the inside is formed at the tip of this bending piece.By inserting the base formwork unit between the side plate and the upright piece, the bending piece is bent inward. A width-stop member, wherein an upper end side of the base formwork unit inserted by a hook portion formed at a tip of the bent portion can be fixed. 2. The width-locking member according to claim 1, wherein a formwork installing member capable of installing a formwork of a foundation rising portion is arranged in a central portion of the bottom plate.