JPS634133Y2 - - Google Patents

Description

[Detailed explanation of the idea] Technical field This invention relates to concrete formwork support frames.

Conventional technology Conventionally, as this type of support frame,
As disclosed in Publication No. 82535 and Japanese Utility Model Application Publication No. 57-82536, a shallow groove is formed on the top surface for placing the cloth foundation formwork interval holder, and the intermediate part is recessed to accommodate the reinforcing bar support part. Some are made of formed metal plates. This is used by placing spacing holders on several supporting frames arranged in parallel, and fitting the lower end of the cloth foundation form into the fitting part of each spacing holder. The work was very troublesome as the formwork had to be assembled while adjusting the position where the holder was placed.

Purpose The purpose of this invention is to provide a concrete form support frame that allows the fabric foundation form to be easily assembled and is very convenient when pouring base concrete and fabric foundation concrete together.

Structure of the invention The concrete formwork support frame of this invention is formed by bending a plate material into an approximately M-shape from the front.The lower ends of the legs of the support frame are fixed on the bottom plate, and a pair of horizontal parts are formed on both sides of the upper part of the support frame. In order to regulate the inner and outer surfaces of the cloth foundation formwork, outer regulating pieces that can be bent upward are cut into the outer parts of both formwork supporting parts, and outer regulating pieces that can be bent upward are cut into the inner parts. Each of the outer regulating pieces has an inner regulating piece that can be bent upward, and a locking piece that can be bent or twisted inward is formed at the tip of the outer regulating piece at a narrow bending part and twisting part. This is the summary of what was formed.

First Example Hereinafter, the first example that embodies this idea will be described as the first example.
Explaining according to FIGS. 3 to 3, the support frame 1 is constructed as follows.

On the steel bottom plate 2, both lower ends of a steel plate support frame 3, which is approximately M-shaped from the front, are welded and fixed, and both ends of the upper surface thereof are made horizontal to form a pair of formwork support parts 4, 4, which are shaped like a channel downward. The bent central portion of the upper surface serves as a reinforcing bar placement portion 5, and the downwardly bent ends serve as a pair of leg portions 6, 6. The height of the legs 6, 6 corresponds to the height of the base concrete. Note that the front and rear edges of the support frame 3 are bent inward to form reinforcing ribs 3.
a and 3b are formed. The upper surface of a steel plate reinforcing member 7 having a square-shaped front surface and having reinforcing ribs 7 a is fixed to the lower surface of the reinforcing bar placement part 5 , and both lower ends of the reinforcing member 7 are fixed to the bottom plate 2 .

Cuts 8, 8 are made in the bottom plate 2 to form a pair of
The anti-slip pieces 9, 9 are formed to be bendable downward, one anti-slip piece 9 facing in the longitudinal direction and the other anti-slip piece 9 facing in the width direction.

Cuts 10, 10 are made in both leg parts 6, 6, and rectangular base formwork fixing pieces 11, 11 are respectively formed at their proximal ends so that they can be bent outward. A pair of notches 11a, 11a are made in the base end of each fixed piece 11 from both side edges to make the fixed piece 11 easy to bend. Two notches 11b and 11c are made in the upper part of each fixed piece 11 from one side edge, and between these cuts 11b and 11c, the fixed piece 11 is bent outward at a substantially right angle and then bent upward. An inner fixing piece 12 is formed at the tip of the fixing piece 11, and an outer fixing piece 14 is formed at the tip of the fixing piece 11, which can also be bent upward at a narrow bending part 13 formed by the notch 11c. It should be noted that a fixed interval corresponding to the thickness of the base formwork is provided between the inner fixing piece 12 and the outer fixing piece 14.

A notch 15 is made in the inner side of each formwork support part 4 to form an inner regulating piece 16 that can be bent upward, and a notch 17 is made in the outside part of each formwork support part 4 to form an upwardly bendable regulating piece 16. A bendable outer regulating piece 18 is formed. Note that the inner regulating piece 16 and the outer regulating piece 1
8, there is a constant interval corresponding to the thickness of the formwork.

A pair of notches 18a, 18a are made from both side edges at the base end of each outer regulating piece 18 to make it easier to bend the outer regulating piece 18. A pair of notches 18b, 18b are formed at the upper part of the outer regulating piece 18 from both side edges.
is inserted to form a narrow bending part and twisting part 19, and at the tip thereof, after bending the outer regulating piece 18 upward, it can be bent or twisted inward at the bending part and twisting part 19. A locking piece 20 is formed.

Now, a method of pouring concrete for a house foundation using the base frame of the first embodiment will be explained with reference to FIGS. 2 and 3.

A split stone S is laid on the inner bottom surface of the excavated hole H, and a large number of supporting frames 1 (only one is shown) are placed on the split stone S. After checking the horizontality, placement position, etc. of each support frame 1, the anti-slip pieces 9 are bent into the split stone S (downward). In this case, one anti-slip piece 9 more effectively prevents the support frame 1 from moving in the left-right direction, and the other anti-slip piece 9 prevents it from moving in the front-rear direction. In other words, it is an attempt to overcome the drawback that a support frame made of steel plates is lighter and easier to move than one made of concrete.

The lower transverse bar 21a of the reinforcing bar 21 is placed on the reinforcing bar placement portion 5. Note that the vertical stripes 21b are fixed to the horizontal strips 21a. Bend both inner regulating pieces 16, 16 upward, and place cloth foundation formwork 2 on both formwork support parts 4, 4.
2 and 22 are placed facing each other. Both outer regulating pieces 1
8, 18 upwards, and the lower ends of both formworks 22, 22 are aligned with the inner regulating pieces 16, 16, the outer regulating pieces 18,
Both formworks 22, 2 are sandwiched between 18 and 18.
Maintain the spacing between 2. Furthermore, both formworks 22, 22
Reinforcing ribs 22a, 22 formed on the outer side of the lower end of
Fold the locking pieces 20, 20 inward and wrap them around a,
Both formworks 22, 22 are firmly fixed on the support frame 1. Note that the locking pieces 20, 20 may be twisted at the bent portion and twisting portion 19. In this way, formwork 2
2. Assembly is extremely easy and very convenient.

Next, both fixing pieces 11, 11 are bent outward, their tips are positioned on the split stone S, and the inner fixing pieces 1
2 and 12 upward. The upper tips of the pair of base forms 23, 23, which have a substantially inverted L-shape in cross section, are respectively placed on the formwork supports 4, 4 outside the outer regulating pieces 18, 18, and the lower ends are placed on both fixing pieces 1.
1 and 11, respectively. The outer fixing pieces 14, 14 are bent upward, and the lower end of the base mold opening 3 is clamped and fixed between the inner fixing piece 12 and the outer fixing piece 14, respectively.

A side plate 22b is bent outward at the side edge of each formwork 22, and a pin 24 for connecting adjacent formworks is supported on the side plate 22b. Side plate 2
As shown in FIG. 3, the regulating member 25 attached to the member 2b is made by bending a metal plate into a U-shaped cross section, and has elasticity at its tip so that it can be opened and closed.
A removal piece 26 is integrally provided upwardly protruding from the upper base end of the regulating member 25, and a first regulating piece 27 is integrally provided downwardly protruding from the lower base end. A second regulating piece 28 is integrally provided at the lower end of the regulating member 25 at a constant distance from the first regulating piece 27 toward the tip side, and a second regulating piece 28 is integrally provided so as to extend between the second regulating piece 28 and the first regulating piece 27. The regulation section 29 is defined as the regulation section 29.

The regulating member 25 is attached so as to sandwich the side plate 22b. In this case, the reinforcing rib 22a, the outer regulating piece 18, and the upper end of the base formwork 23 are fitted into the regulating part 29, and the upper end of the base formwork 23 is inserted into the base frame 1.
fixed on top. Note that the upper end of the regulating member 25 abuts against the pin 24 and is prevented from moving upward.

Between the cloth foundation formwork 22, 22 and the base formwork 23,
Concrete is poured between 23 and 23, and the base part of the house foundation concrete and the cloth foundation part are integrally molded.
In this case, although a great pressure is applied to the inner surfaces of the cloth foundation formworks 22, 22, the locking pieces 20, 20 are wrapped around the reinforcing ribs 22a, 22a, respectively, so the outer regulating pieces 18, 18 return to the outside. Not easy to deform. In addition, the support frame 3 includes cloth foundation forms 22, 22.
Although the weight of the support frame 3 and the weight of the concrete to be placed and impact are applied, the reinforcing member 7 reinforcingly prevents deformation of the support frame 3. Furthermore, the base formwork 23, 2
Although concrete pressure is also applied to the inner surfaces of the supporting forms 23, 23, since the upper and lower ends of the support formworks 23 and 23 are fixed to the base frame 1, they will not come off from the base frame 1.

After the concrete is formed, the regulating member 25 is removed by pulling the removal piece 26 outward, the cloth foundation formwork 22, 22 and the base formwork 23, 23 are removed, and the support frame 1 is buried in the concrete. They become expendable items that are killed.

Note that notches 11a, 11a for making it easier to bend the fixed piece 11, notches 18a, 18a for making it easier to bend the outer regulating piece 18, and the locking piece 2.
Notch 18 to make it easier to bend 0,20
b, 18b may be through-hole-like cuts. Further, the bending portion/twisting portion 19 may be formed into a long and narrow shape so as to be bendable at any location.

Second Embodiment Next, the second embodiment embodying this idea will be explained in the fourth embodiment.
Explaining according to the drawings, the support frame 1 is formed by fixing the center and both lower ends of a front-shaped support frame 3 on a bottom plate 2. Two reinforcing protrusions 3b are formed on the support frame 3 along its longitudinal direction to protrude outward. Although formwork support parts 4, 4 and four leg parts 6 are formed as in the first embodiment, the reinforcing member 7 is not required. Further, as in the first embodiment, inner regulating pieces 16, 16 and outer regulating pieces 18, 18 are formed. Cuts 10, 10 are made in the leg portions 6, 6 at both ends from one side edge to form fixing pieces 11, 11 similar to those in the first embodiment. A cut 11b for forming the inner fixing piece 12 is made obliquely, and a cut 11d is also made from the opposite edge of the cut 11c to make it easier to bend the outer fixing piece 14.

A reinforcing bar mounting portion 5 made of a round bar is constructed and fixed to the central leg portions 6, 6 of the support frame 3 at an intermediate portion thereof upright.

Four anti-slip pieces 9 similar to those in the first embodiment are formed on the bottom plate 2, of which two anti-slip pieces 9 (one in the longitudinal direction of the bottom plate 2) are used to prevent the support frame 1 from moving in the left and right direction. The two anti-slip pieces 9 facing each other are arranged diagonally to each other, and the two anti-slip pieces 9 for preventing movement in the front and rear directions are also arranged diagonally to each other. In this way, compared to the first embodiment, the support frame 1 is made more difficult to slide on the broken stones S.

The method of using the base block of the second embodiment is the same as that of the first embodiment.

Third Embodiment Next, the third embodiment embodying this idea will be explained in the fifth embodiment.
Explaining according to the figures and FIG. 6, the fixing piece 11 is different from the first embodiment, and five notches 11d are made in the tip of one side edge of the fixing piece 11, so that the fixing piece 11 can be removed. First to fifth fixed pieces 30 to 34 are formed which can be bent upward after being bent toward the front.

When using the base frame 1 of this third embodiment, the lower end of the support formwork 23 is connected to the first and second fixing pieces 30,
31, between the second and third fixed pieces 31, 32,
It can be fixed at four locations: between the third and fourth fixing pieces 32 and 33, and between the fourth and fifth fixing pieces 33 and 34, and is attached to the base formwork 23 having different horizontal dimensions in FIG. There is no need to prepare different types of base frames 1 when the lateral dimensions of the base concrete are to be made different.

Note that the first to fifth fixing pieces 30 to 34 can also be formed by making cuts 11d on both side edges of the fixing piece 11.

Moreover, instead of forming the fixing pieces 11 in the leg portions 6, the bottom plate 2 can be extended outward and the first to fifth fixing pieces 30 to 34 can be cut in the bottom plate 2.

Effects As detailed above, this invention allows the fabric foundation formwork to be easily assembled, and when the base concrete and fabric foundation concrete are cast together, the support frame is able to connect the outer regulating piece and the inner regulating piece. This eliminates the need for a separate spacing holder and eliminates the trouble of adjusting the position of the outer and inner regulating pieces.
It is very convenient, and since the formwork is locked with the locking piece, it has the excellent effect that there is no risk of the formwork coming off.

[Brief explanation of the drawing]

1 to 3 show a first embodiment embodying this invention, and FIG. 1 is a perspective view showing a support frame, and FIG.
The figure is a sectional view showing how to use it, and FIG. 3 is a perspective view showing a regulating member of the base formwork. FIG. 4 is a perspective view showing a second embodiment of the support frame embodying this invention. Figures 5 and 6 show a third embodiment embodying this invention, with Figure 5 being a partial perspective view and Figure 6 being a partial perspective view.
The figure is a sectional view showing how to use it. Support frame...1, Bottom plate...2, Support frame...3,
Formwork support section...4, Rebar placement section...5, Leg section...
6, Anti-slip piece...9, Fixing piece...11, Inner fixing piece...12, Outer fixing piece...14, Inner regulating piece...
...16, Outer regulation piece...18, Locking piece...20,
Regulating member...25, first regulating piece...27, second regulating piece...28.

Claims (1)

[Claims for Utility Model Registration] 1. The lower ends of the legs 6 of the support frame 3, which is formed by bending a plate material into an approximately M shape from the front, are fixed on the bottom plate 2, and a pair of horizontal parts are provided on both sides of the upper part of the support frame 3. In order to regulate the inner and outer surfaces of the cloth foundation formwork 22, outer regulating pieces 18 that can be bent upward are cut into the outer sides of both formwork supporting parts 4. An inner regulating piece 16 that can be bent upward is formed on the inner side, and a narrow bending and twisting part 1 is formed at the tip of the outer regulating piece 18.
A concrete form support frame characterized in that a locking piece 20 that can be bent or twisted inward is formed at 9. 2. The concrete form support frame according to claim 1, wherein the bottom plate 2 has an anti-slip piece 9 that can be bent with its longitudinal direction or width direction as a bending line.