JPH1136587A - Form for placing concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To build a base concrete part and a continuous footing by placing concrete through one action without losing easy constructability of a light heat insulation type form material. SOLUTION: This forms for placing concrete comprises a pair of form plates 5 and 5 arranged such that two plate-form members formed of a rigid foamed resin molded product are disposed with a given distance therebetween, and a space for placing concrete is formed between surfaces positioned facing each other. and a connection member 6 to be erected between the surfaces, positioned opposite to each other, of a pair of form plates 5 and 5 integrally connect together the form plates 5. A pair of the form plates 5 and 5 are vertically and longitudinally stacked to form the form structure of concrete. In this case, A fixing member 10 is provided to be disposed on the arrangement surfaces of a pair of form plates 5 and 5 and form a space for placing concrete between the form plate and an arrangement surface by mounting and holding a pair of the form plates 5 and 5 on an upper surface, and an uneven surface form holding part with which the bottom parts of a pair of the form plates 5 and 5 are engaged is formed in the upper surface side of the fixing member 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pair of formwork plates made of a molded article of rigid foamed plastic, which are stacked up and down and back and forth and used as a formwork structure for foundation concrete or the like of a house. With regard to the installation formwork, in particular, by providing a fixing member for mounting and holding the formwork plate on the upper surface, a space for concrete casting is formed below the formwork plate, and the base portion of the foundation concrete and the fabric base portion The present invention relates to a concrete casting formwork that can be formed by a single concrete casting.

[0002]

2. Description of the Related Art In recent years, from the viewpoint of energy saving, the trend of high airtightness and high insulation of houses has been increasing year by year, and many house manufacturers and construction companies have developed methods for high airtightness and high heat insulation. Highly air-tight and highly insulated houses are steadily spreading. Various heat insulating materials and the like are also provided for the basic concrete portion of a house, and high airtightness and high heat insulation are being achieved.

On the other hand, at the construction site of a house, the problems of aging and shortage of absolute numbers of construction contractors engaged in the construction are becoming serious, and simplification of the housing method and stabilization of the quality of the house are important in the construction industry. It has become a challenge. For this reason, there is an increasing demand for simplification of the construction method also for the construction work of the foundation concrete of a house.

[0004] By the way, a construction method using a form for concrete casting has conventionally been adopted for the construction of basic concrete for a house. Here, as a formwork material for concrete casting used in such a concrete foundation method,
Generally, a plywood, a metal plate, a concrete panel or the like is used.

[0005] However, in the case of a formwork made of plywood, a metal plate, or the like, the formwork itself is very heavy, requiring a great deal of labor to carry in and carry out the formwork. In doing so, skilled skills were required.

Moreover, in the conventional concrete casting method using such a form material, the form material is removed from the mold after curing of the concrete, and is repeatedly used. In addition to the necessity of demolding work, the work of washing and storing the demolded mold was also required separately. As described above, the conventional concrete placing method has a problem that a great deal of time and labor is required for the entire foundation work.

Therefore, in order to solve such a problem, in recent years, lightweight heat-insulating mold members made of hard foamed plastics and the like have become popular. FIG. 9 and FIG. 10 show such a lightweight heat-insulating formwork, and FIG.
10 is a perspective view of a state where the lightweight heat-insulating formwork is assembled, and FIG. 10 is a cross-sectional front view of a main part showing a state where concrete is cast using the lightweight heat-insulating formwork shown in FIG. 9.

[0008] As shown in these figures, the conventional lightweight heat-insulating molds are made of mold plates 5 and 5 made of a hard foamed resin molded article.
Are opposed to each other, and a connecting member 6 made of a resin molded product or a metal material is attached and integrally connected to form a formwork structure, which is used as a formwork material for concrete casting.

[0009] Here, in the concrete casting method using such a lightweight heat-insulating formwork, as shown in FIG. 10, first, crushed stones and split chestnuts are cut into root cut holes formed by excavating the soil surface 50. Then, a base concrete 3 corresponding to a footing portion of a concrete foundation is cast on the waste concrete 2 by using form plates 7 and 7.
After curing (the molds 7 and 7 are removed from the mold after curing), inking is performed on the base concrete 3 and the form plates 5 and 5 connected by the connecting member 6 are arranged along the inking. While performing the rebar arrangement work of the reinforcements 8a and 8b, the molds 5 and 5 are stacked to a desired base height, and then concrete is poured into a space formed by the pair of molds 5 and This is a method for forming the foundation 4. Note that FIG.
Reference numeral 60 denotes a surface mortar material, which is attached to the surface of the form plate 5 of the completed fabric base 4.

[0010] Such a lightweight heat-insulating form material mainly uses a hard foamed plastic as a form material, and is lighter in weight and easier to carry than conventional plywood and metal form materials, and can be processed. Since the cutting work can be easily performed on site, there is an advantage in that the assembling work of the formwork does not require the skilled work as in the past, and the construction period can be shortened.

Further, such a lightweight heat-insulating form material is made of a hard foamed plastic material, and is also used as a heat insulating material. As shown in FIG.
After the casting, the form plates 5, 5 are left on the surface of the cloth base 4 as they are, and function as a heat insulating material. For this reason, a heat insulating foundation structure can be obtained at the same time as the concrete is cast, and a demolding step like a conventional plywood formwork is not required, so that it is possible to further shorten the construction period. Was.

[0012] For these reasons, in recent years, various technologies relating to light-weight heat-insulating form materials have been devised and provided.
No. 048, a block structure in which a joining portion is integrally formed with a form plate, and a type in which a joining member is mounted on a form plate to provide a form structure as disclosed in Japanese Patent Application Laid-Open No. 6-129099. There is.

[0013]

By the way, in the conventional construction method in the foundation work of a house using a plywood or the like as a form material, quarrying / cutting chestnuts into root cut holes formed by excavating the soil surface. , Discard concrete hitting, Bar arrangement work,
Concrete hitting of the base (basic footing) part,
The procedure of plywood formwork and fabric foundation part concrete casting was performed, but such a procedure is almost the same in the construction method using lightweight heat-insulating formwork as the formwork material, as described above. It has become.

That is, in the concrete casting method using a lightweight heat-insulating form material as a form material, the methods proposed so far are mainly aimed at setting, curing and heat insulation of a fabric base portion. A base concrete is formed in advance by casting concrete in the base concrete portion, and after the curing of the base portion is finished, the ink is inked on the base concrete to obtain a lightweight insulation type. The procedure of constructing the frame is adopted.

For this reason, in the construction of such a lightweight heat-insulating formwork, the base concrete 3 and the cloth base concrete 4 shown in FIG.
It was necessary to carry out concrete casting in two parts.

However, recently, from the standpoint of reducing labor costs by further shortening the number of construction days and reducing costs associated with concrete placing, the work of forming the base concrete and the fabric foundation has been carried out in concrete. -There is an increasing demand for one-shot concrete, and the light-weight heat-insulated formwork described above cannot meet such a single-shot request for concrete.

In order to respond to such a demand, for example, Japanese Patent Application Laid-Open No. Hei 8-17757 discloses a lightweight heat-insulating formwork capable of concrete-casting a base concrete portion and a fabric base portion at one time. Proposed. However, in the method disclosed in Japanese Patent Application Laid-Open No. H8-177057, there is a problem that the assembling and construction work of the mold is complicated, and the good workability of the lightweight heat-insulating mold is lost.

The present invention has been proposed in order to solve the problems of the prior art, and it has been proposed to provide a base concrete without losing the workability of a lightweight heat-insulating formwork.
It is an object of the present invention to provide a concrete casting formwork in which a concrete portion and a fabric base portion are formed by a single concrete casting to obtain a concrete foundation structure.

[0019]

In order to achieve the above object, a concrete casting form according to claim 1 of the present invention is composed of two plate-like members made of a hard foamed resin molded article, and is provided with a predetermined shape. A pair of formwork plates that are arranged facing each other with an interval and form a space for concrete casting between the opposing surfaces, and are erected between the opposing surfaces of the pair of formwork plates while maintaining the space. In a concrete casting formwork having a connecting member for integrally connecting a pair of formwork plates, the concrete placing formwork is disposed on an installation surface of the pair of formwork plates, and the pair of formwork plates are mounted and held on an upper surface. And it is the structure provided with the fixing member which forms the space for concrete casting between the said formwork board and an installation surface.

According to the concrete casting formwork of the present invention having such a configuration, the formwork is fixed to the hollow by the fixing member, and the base which forms the basic footing between the formwork and the installation surface. Since the space for placing concrete is formed, it is integrated with the space for the cloth foundation formed between the facing of the formwork, and the concrete and base concrete part of the concrete foundation are cast once. Can be produced.

Since the rigid foamed plastic molded product used as the form plate is used as it is as the basic heat insulating material on the cloth base portion, the basic heat insulating structure can be obtained simultaneously with the concrete casting.

Further, the pair of form plates according to the second aspect are stacked vertically and connected in the longitudinal direction to form a concrete form structure.

According to the concrete casting formwork of the present invention having such a configuration, a pair of formwork plates are stacked up and down to a desired height in a state where they are connected by the connecting member, and are vertically and longitudinally connected. By arranging them consecutively, the wall of the house can be freely configured to a desired size.

According to a third aspect of the present invention, there is provided a concrete casting formwork, wherein a concave formwork holding portion is formed on an upper surface side of the fixing member so that each bottom of the pair of formwork plates is engaged. There is a configuration.

According to the concrete casting formwork of the present invention having such a configuration, the pair of formwork plates are held by engaging the bottom portions with the concave portions of the fixing member, respectively, so that positioning is easy. As a result, it is possible to easily and surely mount on the fixing member, and it is possible to further improve the working efficiency.

In the concrete casting form according to a fourth aspect of the present invention, a portion of the fixing member mounted on the form plate is adjustable in a height direction.

According to the concrete casting formwork of the present invention having such a configuration, for example, even when there is a difference in the horizontal level of the discarded concrete, by adjusting the fixing member, The lightweight heat-insulating formwork can be fixed at a desired height position, and the base concrete portion and the fabric base portion can be made by one-shot concrete.

According to a fifth aspect of the present invention, there is provided a concrete casting formwork in which the fixing member is provided with a concave reinforcing bar holding portion for mounting and holding a reinforcing bar disposed inside the concrete. There is.

According to the concrete casting formwork of the present invention having such a configuration, the reinforcing bars provided in the concrete are engaged with the holding portions, so that the reinforcing bars can be fixed without taking special measures. Height.
Generally, the reinforcing bars in the concrete foundation are placed in a state of being floated 5 to 6 cm from the height of the discarded concrete. In particular, it is possible to perform the reinforcing work without applying so-called getters or the like for lifting the reinforcing bars, and it is possible to produce the concrete foundation by one concrete casting.

Further, the concrete casting formwork according to claim 6 is arranged on the side surface of the fixing member around the fixing member to form a space for concrete casting.
It is configured such that a guide portion with which the end of the letter-shaped form plate is engaged is provided.

According to the concrete casting formwork of the present invention having such a structure, the inverted L-shaped formwork for forming the base concrete portion is provided on the side surface of the fixing member. It can be arranged and fixed, and the dimensional accuracy of the base concrete can be easily increased.

[0032]

Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] First, a first embodiment of a concrete casting formwork of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing the entire concrete casting formwork according to the first embodiment of the present invention.
FIG. 2 is a perspective view showing a fixing member of the concrete casting formwork shown in FIG. 1. FIG. 3 is a partial cross-sectional front view showing a state where concrete is cast using the concrete casting formwork according to the present embodiment.

As shown in these figures, the concrete casting formwork of the present embodiment has a formwork structure for forming a foundation concrete of a house.
5, a connecting member 6 for connecting the pair of form plates 5, 5;
And a fixed member 10 on which a pair of connected form plates 5 and 5 are mounted and held.

The pair of form plates 5, 5 are composed of two plate-like members made of a rigid foamed resin molded article, and are disposed so as to face each other with a predetermined space therebetween. Is a formwork that forms a space for placing concrete.

The connecting member 6 functions as a spacer provided between the facing surfaces of the pair of form plates 5 and 5, and maintains the space for concrete casting formed by the pair of form plates 5 and 5. While the two form plates 5 are integrally connected.

The form plates 5, 5 integrally connected by the connecting member 6 are provided with irregularities which are fitted to each other on the upper and lower surfaces so as to be vertically stacked. Further, the pair of form plates 5, 5 can be connected in the longitudinal direction.

Thus, the pair of form plates 5, 5
Are connected to each other by a connecting member 6 and stacked up and down to a desired height, and connected in front and rear in the longitudinal direction, so that a wall portion of a house can be configured.

The material of the mold plate 5 is desirably a rigid resin foam molded product having high heat insulation performance, such as styrofoam or urethane foam, and is fitted in the vertical direction of the mold plate 5. The structure may be any shape and structure as long as the form plates can be stacked up to a desired base height.

The fixing member 10 is disposed on an installation surface on which the pair of form plates 5 and 5 are installed.
Is a holding member to be mounted and held. As shown in FIG. 2, the fixing member 10 includes a long bottom plate 11 and a pair of side plates 1 vertically protruding from both ends of the bottom plate 11.
A frame-shaped member having a front concave shape provided with a pair of side plates 12, 12 on the upper surface side of which are mounted and held bottom portions of a pair of frame plates 5, 5, respectively; , 13
Is provided.

The form holding portion 13 is formed in a concave shape on the upper surface side of the fixing member 10, that is, on the upper end of the side plate 12 so that the bottoms of the pair of form plates 5 and 5 can be engaged.
By providing such a fixing member 10, as shown in FIG. 3, the pair of form plates 5, 5 are held in a state of being fixed in a hollow state, and concrete is poured between the form plates 5 and the installation surface. The form plates 5, 5 can be locked at the height of the base footing portion required for the house foundation while forming a space for use.

That is, in the concrete casting formwork of this embodiment, as shown in FIG. 3, quarrying and split chestnut 1 is performed at the bottom of a root cutting hole 51 formed by excavating a soil surface 50, At the foundation work site where the concrete 2 has been cast, the fixing members 10 can be directly arranged on the concrete 2 and the form plates 5, 5 can be mounted and arranged.

Here, as a material of the fixing member 10, a resin molded product, metal, or the like is used, and the bottom plate 11, the side plate 12, and the mold holding portion 13 are formed by integral molding or bending. In addition, as for the size of the fixing member 10,
The form holding unit 13 is provided in accordance with the distance between the pair of form plates 5 and 5 facing each other.
The size of the mold plate 5 is fixed securely, for example, 5 cm in width.
As described above, it is desirable that the height of the lower part of the form plate 5 be 2 cm or more.

The fixing member 10 is desirably provided with a nailing hole 14 in the bottom plate 11 so that it can be nailed and fixed to the concrete 2 portion with a concrete nail.
In this case, the thickness of the bottom plate 11 is adjusted so that the concrete nail can penetrate the bottom plate 11 and be driven into the discarded concrete 2.

The number of such fixing members 10 to be installed is preferably, for example, at least two for one set of form plates 5 and 5 made of lightweight heat insulating material having a length of 1 m. More preferably, it is desirable to install it at a total of three places at both ends and the center of the form plates 5 and 5 in the longitudinal direction.

It should be noted that the fixing member 10 of the present embodiment is similar to that of FIG.
As shown in (1), the form holding portion 13 is provided so as to protrude inside the fixing member 10, but is not particularly limited to this, and the form holding portion 13 faces the outside of the fixing member 10. Any shape can be used as long as it can securely hold the bottom side of the form plate, such as protruding.

Further, the shape of the mold holding portion 13 is
The shape is not limited to the shape of the above-described embodiment, but may be any as long as it can securely mount and hold the form plate. For example, the form holding portion 13 is formed in a horizontally protruding flat plate shape on which the form plates 5 and 5 can be mounted, and is mounted on the form plates 5 and 5 mounted from the bottom side of the flat holding portion. You can also drive a nail.

Next, the steps of casting and forming a concrete foundation using the concrete casting formwork of this embodiment having the above-described configuration will be described. First, the soil surface 50 at the place where the concrete foundation is to be installed is excavated to a certain depth to form a root cutting hole 51, and the bottom of the root cutting hole 51 is solidified by quarrying and splitting stone 1 and discarded thereon. The foundation 2 is formed by hitting the concrete 2.

Next, the fixing members 10 are arranged on the foundation at regular intervals. Then, the ground is returned to the ground while arranging the form plates 7 and 7 that form a space to be a basic footing portion around the outer periphery of the fixing member 10. And
In this state, the form plates 5 and 5 connected by the connecting member 8 are mounted on the upper surface of the fixing member 10.

At this time, since the concave form holding portion 13 for inserting and holding the lower portion of the form plate is provided on the upper surface of the fixing member 10, the form plates 5, 5 can be easily attached to the fixing member 10. Can be mounted and aligned.

As the form members 7 forming the space of the base footing portion, a lightweight heat-insulating form member made of a hard foamed resin molded article or the like may be used, or a conventional form member may be used. Alternatively, a normal form material such as plywood may be used.

In this state, a reinforcing arrangement 8 is provided in the space formed by the pair of form plates 5, 5 and the form plates 7, 7 of the basic footing portion.
(The horizontal reinforcing bars 8a, the vertical vertical reinforcing bars 8b, etc.) are arranged, concrete is poured from above the spaces of the form plates 5 and 7, and the concrete and the form plates 5 and 5 are hardened integrally. The mold plates 7, 7 are released after the concrete has hardened.

Thus, the base concrete 3 and the cloth foundation concrete 4 are integrally formed, and the construction is completed. Note that, as the above procedure, the order may be reversed such that the mold plates 7 forming the basic footing portion are first arranged, and then the fixing member 10 is installed.

As described above, according to the concrete casting formwork of the present embodiment, the form plates 5, 5
Is fixed in the hollow, and a space for placing the base concrete 3 constituting the foundation footing is formed between the formwork and the installation surface, and is integrated with the space for the cloth foundation 4 formed between the facing forms. Thus, the footing portion and the fabric base portion of the concrete foundation can be manufactured by a single concrete casting.

Since the form plates 5 and 5 made of a hard foamed plastic molded product are used as the basic heat insulating material for the cloth base portion, the basic heat insulating structure can be obtained simultaneously with the concrete casting. As a result, it is possible to improve the workability of the concrete placing, which has conventionally been performed twice, and to reduce the cost associated with the concrete placing.

Further, since the fixing members 10 for fixing the pair of form plates 5 and 5 are provided with concave form holding portions 13 and 13, the bottom portions of the form plates 5 and 5 are fixed to the fixing members. 10 is engaged with and held by the mold holding portion 13, the positioning of the mold plates 5, 5 is facilitated, and the mold plates 5, 5 can be easily and reliably mounted on the fixing member 10, and the working efficiency can be further improved. .

Second Embodiment Next, a second embodiment of the concrete casting formwork of the present invention will be described with reference to FIG. FIG. 4 is a perspective view showing a fixing member of a concrete casting formwork according to a second embodiment of the present invention.

As shown in the figure, the concrete casting formwork of this embodiment is a modified embodiment of the fixing member in the first embodiment described above. That is, similarly to the first embodiment, the fixing member 20 of the present embodiment has an elongated bottom plate 21.
And a pair of side plates 22, 22 projecting vertically from both ends of the bottom plate 21, and the bottoms of the pair of form plates 5, 5 are mounted and held on the upper surfaces of the side plates 22, 22. Holders 23, 23 are provided.

In the fixing member 20 of the present embodiment, the height of the form holders 23 for holding the form plate 5 can be adjusted in the vertical direction. As shown in FIG. 4, the form holding parts 23, 23 are slidably mounted in the height direction of the side plates 22, 22.

The side plate 22 and the frame holding portion 23 have claw portions 22 which are elastically deformable and mesh with each other.
a and 23a are formed in a plurality of stages. Thereby, the form holding part 23 can be adjusted stepwise in the vertical direction along the side plate 22.

As described above, according to the concrete casting formwork of this embodiment, even if there is a difference in the horizontal level of the discarded concrete, the desired height can be adjusted by adjusting the fixing member. The light-weight heat-insulating formwork can be fixed at the height position, and the foundation footing portion and the fabric base portion can be made by one-shot concrete.

In this embodiment, as the height adjusting means, the claw portions 22a, 23
Although a is provided, other means are not particularly limited as long as the form holder 23 can be adjusted in the height direction. For example, by providing a set screw on one of the side plate 22 and the form holding part 23 and providing a stepwise hole with the set screw on the other, the height of the form holding part 23 can be adjusted. .

[Third Embodiment] Next, a third embodiment of the concrete casting formwork of the present invention will be described with reference to FIGS. FIG. 5 is a perspective view showing a fixing member of the concrete casting formwork according to the third embodiment of the present invention. FIG. 6 is a partial cross-sectional front view showing a state where concrete is cast using the concrete casting formwork according to the present embodiment.

As shown in these figures, the concrete casting formwork of the present embodiment is a modified embodiment of the fixing member in the above-described first embodiment. That is, similarly to the first embodiment, the fixing member 30 of the present embodiment includes a long plate-shaped bottom plate 31 and a pair of side plates 32, 32 vertically projecting from both ends of the bottom plate 31. Side plates 32, 3
Form holders 33, 33 for holding the pair of form plates 5, 5 are provided on the upper surface side of 2.

Then, as shown in FIG. 5, the fixing member 30 of the present embodiment is provided with the base horizontal reinforcing bars 8a of the concrete foundation.
Are provided.
That is, a plate-shaped reinforcing bar holding portion 34 is protrudingly provided substantially at the center of the bottom plate 31, and an upper end of the reinforcing bar holding portion 34 has
A recess 34a is formed.

On the other hand, on the side surfaces of the side plates 32, 32, plate-shaped reinforcement holding portions 34, 34 project outwardly.
Similarly, concave portions 35a, 35a are formed at the upper end, respectively. Then, each of the reinforcing bar holding portions 34, 35, 35
In the recesses 34a, 35a, 35a, the horizontal reinforcing bars 8a of the reinforcing bars 8 arranged inside the concrete are mounted and held.

Generally, the reinforcing bars in the concrete foundation are arranged in a state of being floated 5 to 6 cm from the height of the discarded concrete. If it is used, it is possible to perform a reinforcing work without particularly applying so-called getters or the like for lifting the reinforcing bars, and it is possible to produce a concrete foundation by a single concrete casting.

As described above, according to the concrete casting formwork of the present embodiment, the reinforcing bars provided in the concrete are engaged with the holding portions, so that the fixed form can be maintained without taking special measures. Can be held at height.

Fourth Embodiment Next, a fourth embodiment of the concrete casting formwork of the present invention will be described with reference to FIGS. FIG. 7 is a perspective view showing a fixing member of a concrete casting formwork according to a fourth embodiment of the present invention. FIG. 8 is a partial cross-sectional front view showing a state where concrete is cast using the concrete casting formwork according to the present embodiment.

As shown in these figures, the concrete casting formwork of this embodiment is a modified embodiment of the fixing member in the third embodiment described above. That is, similarly to the third embodiment, the fixing member 40 of the present embodiment includes a long plate-shaped bottom plate 41 and a pair of side plates 42, 42 vertically projecting from both ends of the bottom plate 41. Side plates 42, 4
Form holders 43, 43 for holding the pair of form plates 5, 5 are provided on the upper surface side of the frame 2. In addition, a concrete is provided at substantially the center of the bottom plate 41 and the side surfaces of the side plates 42, 42, respectively.
Reinforcing bar holding portions 44 for locking the base horizontal reinforcing bars 8a of the base,
45, 45 are provided.

As shown in FIG. 7, the fixing member 40 of this embodiment has a guide portion 46 for mounting the inverted L-shaped form plate 9 forming a space for the footing portion. It is provided. That is, the side plates 42, 42 of the fixing member 40
Are provided with groove-shaped guide portions 46 on the side surface opposite to the form holding portions 43, 43.
The ends of the inverted L-shaped form plates 9, 9 which are arranged around the fixing member 40 and form a space for placing the base concrete 3 are engaged with the base plates 6, 46.

As described above, according to the concrete casting formwork of the present embodiment, the form plates 9, 9 bent in an inverted L-shape for forming the foundation footing portion are fixed. Since it can be arranged and fixed on the side surface of the base 40, the space for the basic footing can be easily and accurately provided without separately providing means for holding the form plates 9, 9, and the base concrete 3 Dimensional accuracy can be easily increased.

The concrete casting formwork of the present invention is not limited to the embodiment described above, but includes various modified embodiments within the scope of the gist. For example, the fixing member 10 (20, 30, 4
The shape of 0) is a front concave shape, but may be any other shape. Further, as the fixing member, the height adjusting means of the form holding unit shown in the second embodiment, the reinforcing arrangement holding unit shown in the third embodiment, and the guide unit shown in the fourth embodiment are arbitrarily combined. can do.

[0073]

As described above, according to the concrete casting formwork of the present invention, the base concrete portion and the cloth base portion can be formed once without losing the easy workability of the lightweight heat-insulating formwork material. And a concrete substructure can be obtained.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing a fixing member of the concrete casting formwork shown in FIG.

FIG. 3 is a partial sectional front view showing a state where concrete is cast using the concrete casting formwork shown in FIG. 1;

FIG. 4 is a perspective view showing a fixing member of a concrete casting formwork according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a fixing member of a concrete casting formwork according to a third embodiment of the present invention.

FIG. 6 is a partial cross-sectional front view showing a state where concrete is cast using a concrete casting formwork according to a third embodiment of the present invention.

FIG. 7 is a perspective view showing a fixing member of a concrete casting formwork according to a fourth embodiment of the present invention.

FIG. 8 is a partial cross-sectional front view showing a state where concrete is cast using a concrete casting formwork according to a fourth embodiment of the present invention.

FIG. 9 is a perspective view showing a state where a conventional lightweight heat-insulating formwork is assembled.

10 is a cross-sectional front view of a main part showing a state where concrete is cast using the conventional lightweight heat-insulating formwork shown in FIG.

[Brief description of reference numerals]

 DESCRIPTION OF SYMBOLS 1 Quarry and split chestnut 2 Discard concrete 3 Base concrete (basic footing part) 4 Cloth foundation concrete 5 Form plate 6 Connecting member 7 Form plate 8a Base vertical arrangement 8b Base Horizontal reinforcing bars 9 inverted L-shaped form plate 10 fixing member 11 bottom plate 12 side plate 13 form holding portion 20 fixing member 21 bottom plate 22 side plate 23 form holding portion 30 fixing member 31 bottom plate 32 side plate 33 form holding portion 34 Reinforcement holding part 35 Reinforcement holding part 40 Fixing member 41 Bottom plate 42 Side plate 43 Formwork holding part 44 Reinforcement holding part 45 Reinforcement holding part 46 Guide part 50 Soil surface 51 Root cut hole

Claims (6)

[Claims] 1. A pair of molds comprising two plate-shaped members made of a rigid foamed resin molded body, which are arranged facing each other at a predetermined interval and form a space for concrete casting between the facing surfaces. A concrete casting formwork having a plate and a connecting member erected between opposing surfaces of the pair of formwork plates and integrally connecting the pair of formwork plates while maintaining the space. A fixing member that is disposed on the installation surface of the formwork plate, mounts and holds the pair of formwork plates on the upper surface, and forms a space for concrete casting between the formwork plate and the installation surface. A concrete casting formwork characterized in that: 2. The concrete casting formwork according to claim 1, wherein said pair of formwork plates are vertically stacked and connected in the longitudinal direction to form a concrete formwork structure. 3. The concrete casting formwork according to claim 1, wherein a recessed formwork holding portion is formed on an upper surface side of the fixing member so that a bottom portion of the pair of formwork plates is engaged. 4. A concrete casting formwork according to claim 1, wherein the form plate mounting portion of said fixing member is adjustable in the height direction. 5. The concrete tapping as claimed in claim 1, wherein said fixing member is provided with a concave reinforcing bar holding portion for mounting and holding a reinforcing bar disposed inside the concrete. Installation formwork. 6. A guide portion is provided on a side surface of the fixing member to be engaged with an end of an inverted L-shaped form plate disposed around the fixing member and forming a space for concrete casting. The concrete casting formwork according to claim 1, 2, 3, 4, or 5.