JP2003027494A - Form for concrete foundation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form made of a foamed synthetic resin for a concrete foundation, which has superior strength and mortar coating applied as a surface finish material which hardly cracks or fissures and can be assembled, without using other members connected as separate parts of the form. SOLUTION: A sheathing board 2 of a required shape and a coupling means 3, connected to the sheathing board 2, are formed as one united body with a foamed synthetic resin; and this form is placed facing another sheathing board by a predetermined gap maintained between them and is used as a form 1 for concrete foundation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete foundation formwork, and more particularly, to a concrete foundation formwork that can be easily constructed on-site in a short period of time and can be used as it is as a heat insulating material for the foundation. It is about.

[0002]

2. Description of the Related Art The inventors of the present invention firstly arranged a rectangular plate body in a concrete base formwork having a structure in which rectangular plate bodies are arranged to face each other and the plate surfaces are connected by a connecting member. While forming the foam synthetic resin, a strip-shaped synthetic plate is attached to the outer plate surface of each of these foam synthetic resin plates, and a concrete foundation formwork having a structure in which the connecting member is fixed to the strip-shaped synthetic plate. Created and filed a patent application (Japanese Patent Application No. 9-2
79737).

In this concrete foundation formwork, the foamed synthetic resin plate itself can be reinforced by means of a band-shaped rigid plate attached to each outer plate surface of the foamed synthetic resin plate.
This band-shaped rigid plate can receive the force acting on the connecting member, and it is unlikely that the formwork will be destroyed during concrete pouring or the concrete pouring space will expand, forming a concrete foundation formwork and foaming. It was possible to provide a concrete foundation formwork which is excellent in strength without impairing properties such as lightness and heat insulation properties when a synthetic resin plate body is used as the formwork.

[0004]

However, in the above-mentioned concrete foundation formwork, at least the number of parts is made of a foam synthetic resin plate and is attached to the outside plate surface of the foam synthetic resin plate body. Three points, namely, a band-shaped rigid plate and a connecting member for connecting between the foam synthetic resin plate bodies are required, and the number of parts is large and the assembling work is complicated.

In addition, after the concrete is hardened, when the expanded synthetic resin plate body is used as it is as a heat insulating material for the foundation without removing the mold, mortar is applied to the outer plate surface of the expanded synthetic resin plate body. When surface finishing is performed, since the foam synthetic resin plate body and the strip-shaped rigid plate attached to the plate surface are different materials, cracks and cracks may occur in the applied mortar due to differences in warpage and shrinkage. Had occurred.

Further, in the above-mentioned concrete foundation formwork, when forming the L-shaped portion, the T-shaped portion, or the cross portion of the foundation, the shapes thereof are formed by butting rectangular foam synthetic resin plate members. However, since the abutting portion is inevitably weak in strength, the placing space, particularly the placing space in the T-shaped portion, expands due to the pressure of the placed concrete.

The present invention has been made in view of the problems of the above-mentioned conventional foaming synthetic resin concrete foundation formwork, and its purpose is to provide a connecting member as a separate component. It is an object of the present invention to provide a concrete foundation form made of a foamed synthetic resin, which can be assembled without using it, is resistant to cracks and cracks in mortar applied as a surface finishing material, and is excellent in strength.

[0008]

In order to achieve the above-mentioned object, the present invention provides a barrier plate of a required shape and a barrier plate facing each other at a predetermined interval. The connecting means that can be connected to the is a formwork of a concrete foundation integrally molded of foam synthetic resin. According to this concrete foundation formwork, the weir plate and the connecting means capable of connecting the weir plates facing each other at a predetermined interval are integrally formed of foamed synthetic resin, so that they are lightweight and separate. No connecting member as a part is required, and the assembling work becomes easy. Also, because it is integrally molded,
The formwork also has excellent strength. Furthermore, since the dam plate is not reinforced by a band-shaped rigid plate made of a different material as in the conventional case, cracks or cracks are unlikely to occur in the applied mortar.

Further, in the invention of claim 2, in the formwork of the concrete foundation according to claim 1, the dam plate is a flat plate, and one plate surface thereof has a plurality of substantially L-shapes in plan view. The connecting means is provided so as to project. According to this concrete foundation formwork, a straight wall of the concrete foundation can be constructed.

Further, in the invention of claim 3, in the formwork of the concrete foundation according to claim 1, the dam plate is an L-shaped plate, and each of the inner plate surfaces thereof is L-shaped in plan view. It is assumed that the above-mentioned connecting means in the form of a protrusion is provided. According to this concrete foundation formwork, a projecting corner wall of the concrete foundation can be constructed.

According to the invention of claim 4, in the formwork of the concrete foundation according to claim 1, the dam plate is an L-shaped plate, and each of the outer plate surfaces thereof has a substantially T-shape in plan view. It is assumed that the above-mentioned connecting means in the form of a protrusion is provided. With this concrete foundation formwork, it is possible to construct a corner wall of the concrete foundation.

According to the invention of claim 5, two concrete foundation molds according to claim 2 are used, and the two are connected using the above-mentioned connecting means each having a substantially L shape in a plan view. However, the shape of the space between the barrier plates was linear in plan view. According to this concrete foundation formwork, it is possible to construct a straight portion of the concrete foundation.

According to the invention of claim 6, one concrete formwork of claim 3 and one concrete formwork of claim 4 are used. The L-shaped connecting means and the T-shaped connecting means in plan view were used to connect the two, and the space between the barrier plates was L-shaped in plan view. According to this concrete foundation formwork, the L-shaped portion of the concrete foundation can be constructed.

Further, in the invention of claim 7, one formwork of the concrete foundation according to claim 2 and one formwork of the concrete foundation according to claim 4 are used, and the plan view is omitted. The L-shaped connecting means and the T-shaped connecting means in plan view are used to connect the three members, and the shape of the space between the dam plates is T-shaped in plan view. According to this concrete foundation formwork, the T-shaped portion of the concrete foundation can be constructed.

Further, in the invention of claim 8, four molds of the concrete foundation according to claim 4 are used, and each of the connecting means having a substantially T-shape in plan view is used to connect the four members. The shape of the space between the barrier plates was made to be a cross in plan view. With this concrete foundation formwork, it is possible to construct a cross portion of the concrete foundation.

Further, in the invention of claim 9, the formwork of the concrete foundation according to any one of claims 5 to 8 is appropriately combined and installed in the construction portion, and then concrete is placed in the space portion between the dam plates. In addition, the construction method of the concrete foundation was applied by applying mortar to the outer peripheral surface of the barrier plate. According to this concrete foundation construction method, it is possible to easily construct a concrete foundation having excellent heat insulating properties.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the concrete foundation formwork according to the present invention described above will be described below in detail with reference to the drawings.

First, FIGS. 1 to 3 are views showing a formwork of a concrete foundation according to the present invention. These formworks 1, 11 and 21 are all dam plates 2, 12 and. 22
And connecting means 3, 13, 23 for connecting the barrier plates to face each other at a predetermined interval are integrally formed of foamed synthetic resin such as styrofoam resin.

In the formwork 1 shown in FIG. 1, a dam plate 2 is composed of a flat plate, and a connecting means 3 is provided on one plate surface 2a thereof.
Three pieces are provided protruding at a predetermined interval.

The connecting means 3 is designed to have the width of the concrete foundation whose length is to be constructed, and the half of the length of the connecting foundation bulges out to one side and the plan view (from above in FIG. 1). When viewed, it is formed in a substantially L shape. The other side of the connecting means 3 is chamfered so that the poured concrete is designed to easily go under the connecting means 3.
Further, the base portion of the connecting means 3 is formed in a divergent shape, and the reinforcing rib 3a is extended above the base portion to reinforce the connection with the dam plate 2.

A recess 4 is formed on the upper end of the barrier plate 2 over the entire length thereof, and a plurality of recesses 5 are formed in the recess 4 at appropriate intervals. On the contrary, the lower end of the barrier plate 2 is formed with a projection 6 having a shape and size that can be fitted into the recessed stripe 4, and the projection 6 has a projection 7 having a shape and size that can be fitted into the recess 5. A plurality is formed. A ridge 8 is formed on the left end of the barrier plate 2 over the entire length thereof,
At the right end, a recessed ridge 9 having a shape and dimension into which the ridge 8 can be fitted is formed. The above-mentioned recessed ridges 4, ridges 6 and the like formed on the upper and lower ends and left and right ends of these barrier plates 2 are engaged with each other when a plurality of barrier plates are arranged vertically or horizontally. , Which facilitates the connection and reinforces the connection portion.

The concrete foundation mold 1 having the shape shown in FIG. 1 is made of foamed synthetic resin such as foamed styrene resin by using upper and lower molding molds which are divided at positions indicated by alternate long and short dash lines in the figure. Can be molded.

Next, the form 11 shown in FIG.
Is formed by an L-shaped plate, and one connecting means 13 is projectingly provided on each inner plate surface 12a thereof.

Like the connecting means 3 of the mold 1, the connecting means 13 is designed to have a length that is the width of the concrete foundation to be constructed, and the one half side of the length direction is the end. It bulges out and is formed in a substantially L shape in a plan view (when viewed from above in FIG. 2). Further, the other side of the connecting means 13 is chamfered so that the poured concrete is designed to easily go under the connecting means 13. In addition, the base of the connecting means 13 is formed in a divergent shape, and the connection with the dam plate 12 is reinforced.

The upper and lower ends and the left and right ends of the weir plate 12 are engaged with each other when the weir plates are continuously arranged in the up-down direction or the left-right direction, like the weir plate 2 of the mold 1. A concave stripe or a convex stripe is formed. That is, a recess 14 is formed on the upper end of the barrier plate 12, and recesses 15 are formed in the recess 14 at appropriate intervals. On the other hand, the lower end of the barrier plate 12 is formed with a ridge 16 having a shape and size that can be fitted into the ridge 14, and the ridge 16 has the recess 15 formed therein.
A protrusion 17 having a shape and size that can be fitted in is formed. Further, a convex strip 18 is formed at the left end of the barrier plate 12, and a concave strip 19 having a shape and dimension into which the convex strip 18 can be fitted is formed at the right end.

The concrete foundation mold 11 having the shape shown in FIG. 2 is also made of foamed synthetic resin such as foamed styrene resin by using upper and lower molding molds which are divided at positions indicated by alternate long and short dash lines in the drawing. Can be molded.

Subsequently, the form 21 shown in FIG.
2 is composed of an L-shaped plate, and one connecting means 23 is provided on each of the outer plate surfaces 22a so as to project.

The connecting means 23 is designed to have the width of a concrete foundation whose length is built up, and halves in the length direction from the position of the concrete foundation to bulge out on both sides, and it is seen in a plan view (from above in FIG. 3). In the case of being), it is formed in a substantially T shape. Further, the base portion of the connecting means 23 is formed so as to be widened in the vertical direction to reinforce the connection with the barrier plate 22.

Similar to the dam plates 2 and 12, engaging means are formed on the upper and lower ends and the left and right ends of the dam plate 22, respectively. That is, at the upper end of the barrier plate 22, the concave stripes 24
And a recess 25 are formed, and a ridge 26 and a protrusion 27 are formed on the lower end. Further, on the left end of the barrier plate 22,
A ridge 28 is formed and a recess 29 is formed at the right end. Concrete foundation formwork 2 having the shape shown in FIG.
1 can also be integrally molded with a foamed synthetic resin such as a styrene foam resin by using upper and lower molding dies which are divided at the position shown by the chain line in the figure.

By using the concrete foundation forms 1, 11, and 21 according to the present invention configured as described above, a straight portion of the concrete foundation, without using any connecting member as a separate component, The formwork that constructs the L-shaped portion, the T-shaped portion, and the cross portion can be assembled respectively.

That is, as shown in FIG. 4, two concrete foundation molds 1 shown in FIG. 1 are used, and both are arranged so that the connecting means 3 and 3 face each other inward. Then, when the connecting means 3 and 3 that are substantially L-shaped in plan view are engaged with each other to connect them, the form 30 of the space portion a between the dam plates 2 and 2 becomes a linear form in plan view. Can be assembled.

Further, as shown in FIG. 5, one concrete foundation form 11 shown in FIG. 2 and one concrete foundation form 21 shown in FIG. 3 are used. If the connecting means 13 and 23 are arranged facing each other so as to face inward, and the connecting means 13 having a substantially L-shape in plan view and the connecting means 23 having a substantially T-shape in plan view are engaged with each other to connect them. The shape of the space b between the barrier plates 12 and 22 is L in plan view.
The form 40 having a character shape can be assembled.

Further, as shown in FIG. 6, one concrete formwork 1 shown in FIG. 1 and two concrete formwork 21 shown in FIG. If the three members are connected using the L-shaped connecting means 3 and the substantially T-shaped connecting means 23 in plan view, the shape of the space c between the dam plates 2, 22 and 22 is T-shaped in plan view. The mold 50 can be assembled.

Furthermore, as shown in FIG. 7, the four concrete foundation forms 21 shown in FIG. 3 are used, and the four connecting members 23 each having a substantially T-shape in plan view are used to connect the four members. By doing so, it is possible to assemble the mold 60 in which the shape of the space portion d between the barrier plates 22, 22, 22 and 22 is a cross shape in plan view.

Next, a method of constructing a concrete foundation using the above-described concrete foundation formwork according to the present invention will be described with reference to FIGS.

First, in a factory, the concrete foundation forms 1, 11 and 21 having the above-mentioned shapes are manufactured by integrally molding with foam synthetic resin, and they are transported to the site without being assembled. On the other hand, as shown in FIG. 8, on the other hand, as shown in FIG. 8, root cutting is performed at the position where the foundation is formed, gravel 71 is put in the root cutting portion 70, and discarding waste 72 is placed on the gravel 71. I set it.

Subsequently, an inverted T-shaped rebar frame 73 is disposed on the waste container 72. In this rebar frame 73, both the horizontal portion 74 and the vertical portion 75 may be formed by assembling the rebar at the site by means such as welding, but so-called unit rebar preassembled in the factory may be used. In any case, the space between the horizontal reinforcing bars 75a forming at least the vertical portion 75 of the reinforcing bar frame 73, and the vertical reinforcing bars 7
The interval of 5b is determined by the connection means by considering the positions of the connecting means 3, 13 and 23 projecting from the formwork 1, 11 and 21 of the concrete foundation according to the present invention forming the formwork, respectively. Shall not interfere.

After arranging the reinforcing bar frame 73, form frames 76 forming the footing X are arranged on both sides of the horizontal portion 74 of the reinforcing bar frame 73, and concrete is placed between the frame frames 76 and 76 to form the footing X. To form.

After forming the footing X, a mold 77 for constructing the cloth foundation Y is formed above the footing X by appropriately combining the molds 1, 11 and 21 described above according to the present invention. That is,
Form 77 for constructing the linear cloth foundation A shown in FIG.
Is a mold 3 shown in FIG. 4 using two molds 1 according to the present invention.
The mold 77 used to form the L-shaped cloth base B is formed by using the mold 40 shown in FIG. 5 using one mold 11 and one mold 21 according to the present invention. The formwork 77 for forming and further constructing the T-shaped cloth base C uses the formwork 50 shown in FIG. 6 using one formwork 1 and two formwork 21 according to the present invention. The mold 77 for forming the cross-shaped cloth base portion D may be formed by using the mold 60 shown in FIG. 7 using four molds 21 according to the present invention.

At this time, the molds 1, 11 and 2 according to the present invention
As described above, 1 can be assembled without using any connecting member as a separate component, as described above.
The forming work of the mold 77 becomes very easy. Also,
As shown in FIGS. 8 and 9, when forming the mold 77, the molds 1 according to the present invention are continuously arranged in the up-down direction and the left-right direction. As described above, since the recessed ridges 4 and the ridged ridges 6 which are engaging means are formed at the upper and lower ends and the left and right ends of the barrier plate 2, the connecting work becomes easy, and The continuous portion is reinforced by the engaging means, and the mold 77 having excellent strength can be formed. This also applies to the case where the molds 11 and 21 according to the present invention are continuously arranged in the vertical direction and the horizontal direction.

After the installation of the formwork 77 is completed, concrete is placed in the formwork 77 using a vibrator or the like, and the anchor bolts 78 are embedded at predetermined positions. After that, if mortar 79 is applied to the outer peripheral surfaces of the dam plates 2, 12 and 22 of each of the molds 1, 11 and 21, both sides of the dam plate 2, 12 or 22 are made of foamed synthetic resin as shown in FIG. A cloth foundation Y whose surface is heat-insulated, sound-insulated and moisture-proof is formed. The mortar 79 applied to the outer peripheral surfaces of the barrier plates 2, 12 and 22 is not reinforced by a strip-shaped rigid plate, which is a different material as in the conventional case, so that the mortar is not cracked or cracked. Is unlikely to occur.

The embodiments of the present invention have been described above.
The present invention is not limited to the embodiments described above, and it is needless to say that various modifications and changes can be made within the scope of the technical idea of the present invention.

[0043]

As described above, according to the formwork of the concrete foundation according to the present invention described above, the weir plate having a required shape and the connecting means capable of connecting the weir plates face to face at a predetermined interval are foamed. Since it is integrally molded of synthetic resin, it is lightweight and does not require any connecting member as a separate component, which has the effect of facilitating assembly work. In addition, since it is integrally molded, it has an effect of forming a mold excellent in strength. Furthermore, unlike the conventional method, since the dam plate is not reinforced with a strip-shaped rigid plate that is a different material, it is difficult for cracks and cracks to occur in the mortar applied to the outer peripheral surface of the dam plate for surface finishing. effective.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a concrete foundation formwork according to the present invention.

FIG. 2 is a perspective view showing another embodiment of the concrete foundation formwork according to the present invention.

FIG. 3 is a perspective view showing still another embodiment of the concrete foundation formwork according to the present invention.

FIG. 4 is a transverse cross-sectional view showing a state in which two molds shown in FIG. 1 are used and the molds capable of constructing a straight concrete foundation are assembled.

FIG. 5 is a cross-sectional view showing a state in which a formwork capable of constructing an L-shaped concrete foundation is assembled by using the formwork shown in FIG. 2 and the formwork shown in FIG. is there.

FIG. 6 is a cross-sectional view showing a state in which a mold for constructing a T-shaped concrete foundation is assembled by using one mold shown in FIG. 1 and two molds shown in FIG. Is.

FIG. 7 is a transverse cross-sectional view showing a state in which four molds shown in FIG. 3 are used and the molds capable of constructing a cross-shaped concrete foundation are assembled.

FIG. 8 is a vertical sectional view showing a construction method for constructing a cloth foundation with footing using the concrete foundation formwork according to the present invention.

FIG. 9 is a perspective view showing a construction method for constructing a cloth foundation with footing using the concrete foundation formwork according to the present invention.

FIG. 10 is a plan view showing a state in which a formwork for constructing a cloth foundation is formed using the concrete formwork according to the present invention.

FIG. 11 is a vertical cross-sectional view of a cloth foundation with footing constructed by using the concrete foundation formwork according to the present invention.

[Explanation of symbols]

1,11,21 Formwork of concrete foundation 2,12,22 Weir plate 3,23,23 connecting means 4,14,24 concave line 5,15,25 recess 6,16,26 convex stripes 7, 17, 27 protrusions 8, 18, 28 convex stripes 9, 19, 29 concave line 30 Formwork for building a linear concrete foundation 40 Formwork for building L-shaped concrete foundation Formwork for building 50 T-shaped concrete foundation 60 Formwork to build a cross-shaped concrete foundation 73 Rebar frame 76 Formwork forming footing part 77 Formwork forming the cloth foundation 78 anchor bolt 79 Mortar X footing Y cloth foundation

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takayuki Hirasawa             125 Midorigaoka, Kuroishi, Aomori Prefecture             STEC Corporation Aomori Factory F-term (reference) 2D046 BA01 BA12 BA16

Claims (9)

[Claims] 1. A formwork for a concrete foundation, wherein a barrier plate having a required shape and a connecting means capable of connecting the barrier plates to face each other at a predetermined interval are integrally molded of a foamed synthetic resin. 2. The concrete foundation according to claim 1, wherein the barrier plate is a flat plate, and a plurality of the connecting means having a substantially L shape in a plan view are provided to project on one plate surface thereof. Formwork. 3. The weir plate is an L-shaped plate, and the connecting means having a substantially L-shape in plan view is provided to project on each of the inner plate surfaces thereof. Formwork for concrete foundation. 4. The weir plate is an L-shaped plate, and the connecting means having a substantially T-shape in a plan view is provided to project on each of the outer plate surfaces thereof. Formwork for concrete foundation. 5. The concrete formwork according to claim 2 is used, and the two are connected by using the connecting means each having a substantially L-shape in a plan view. Formwork of concrete foundation, characterized by being linear in plan view. 6. The concrete foundation formwork according to claim 3 and the concrete foundation formwork according to claim 4 are used, and the connecting means having a substantially L shape in plan view and the plan view are used. A formwork for a concrete foundation, characterized in that both are connected by using the above-mentioned substantially T-shaped connecting means, and the shape of the space between the dam plates is L-shaped in plan view. 7. The concrete foundation formwork according to claim 2 is used, and the concrete foundation formwork according to claim 4 is used, and the connecting means and the plan view are substantially L-shaped. A formwork for a concrete foundation, characterized in that the three members are connected by using the above-mentioned substantially T-shaped connecting means, and the shape of the space between the dam plates is T-shaped in plan view. 8. The shape of the space between the dam plates is obtained by using four concrete foundation molds according to claim 4 and connecting the four members by using the connecting means having a substantially T-shape in plan view. Is a concrete foundation formwork characterized by a cross shape in plan view. 9. A concrete foundation formwork according to any one of claims 5 to 8 is appropriately combined and installed in a construction portion, and then concrete is placed in a space portion between the dam plates,
Characterized by applying mortar to the outer peripheral surface of the barrier plate,
Construction method of concrete foundation.