JP2796222B2 - Folded PC basic formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folded PC basic form formed by using a folded PC plate.

[0002]

2. Description of the Related Art Generally, houses are built on foundations buried in the ground. The foundation is usually formed continuously with an inverted T-shaped cross section, and a wall-like support is erected upward from the center of the lower base that is widened in the horizontal direction.

[0003] The above-mentioned residential foundation is generally built on the outside of a foundation on which a form such as veneer is to be formed, and concrete is poured and filled therein, thereby being formed on site. I have. In recent years, Japanese Patent Laid-Open No.
No. 630 (E02D 27/01)
As disclosed in Japanese Patent No. 44522 (E02D 27/01), there is an apparatus in which a foundation is formed by a block body made of PC (precast concrete).

[0004]

However, in the case of such conventional housing foundations, when forming using a veneer or other formwork, these veneer forms are hardened after the cast concrete has hardened. It is necessary to remove it, which requires a lot of labor, making it extremely difficult to secure workers, and the work of removing the formwork increases the number of construction days. Further, post-treatment such as repairing a portion protruding from the ground may be required. Furthermore, the use of veneer increases the amount of wood used, leaving many problems for environmental protection.

On the other hand, when the foundation is formed of a PC block, these foundations can be formed in advance at a factory or the like, so that it is possible to solve the problems of labor shortage and the number of construction days in recent years. However, since the foundation is a concrete block, the weight increases significantly. For this reason, even if the foundation is carried into the site, it is necessary to form the foundation in finely divided parts and join them together at the site, and this joining work requires extra labor, and this block body Each joint has a problem that concrete must be cast in place.

In view of the above-mentioned problems, the present invention provides a folded PC basic form that can achieve weight saving while saving labor, shortening the number of construction days, and protecting the environment by saving resources. The purpose is to provide.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a housing foundation having bent portions corresponding to respective corners, and bending the respective bent portions via joint members. Folded PC by connecting PC version as possible
Construct the basic formwork.

It is preferable that a pair of bent PC plates are provided on both sides of a foundation to be formed so as to face each other, and these pair of bent PC plates are fixed at appropriate intervals via a separator.

[0009]

According to the above-mentioned structure, the folded PC basic form of the present invention is bent from the bent portion of the PC plate which can be bent through the joint portion, thereby forming the mold along the outside of the foundation. A frame can be formed, and concrete is poured and filled in the frame, whereby the cast concrete and the form can be integrated to form a foundation. Therefore, it is not necessary to remove the mold after the concrete is hardened, and the PC plate serving as the mold can be formed in advance in a factory or the like. In addition, the surface treatment of the PC plate can be performed at the molding stage of the mold, and the need for post-treatment on site is eliminated. Furthermore, since the inside of the base form is hollow, it is possible to achieve a significant reduction in weight as compared with the PC base formed as a block body, and thus achieve a longer base form. Thus, the number of joints can be significantly reduced. Furthermore, since a mold such as veneer is not required, it is possible to contribute to environmental protection by saving resources.

A pair of folded PC plates are provided on both sides of a base to be formed so as to face each other, and the pair of folded PC plates is fixed at appropriate intervals via a separator, thereby assembling a formwork. Therefore, it is not necessary to use a holding tool such as a supporter, and the mounting can be made simple and reliable.

[0011]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 6 show a folded PC basic form 10 showing an embodiment of the present invention. FIG. 1 is a sectional view showing a linear form basic form, and FIG. 2 is a sectional view of a foundation constructed using the form. 3 is an enlarged view of a portion A in FIG. 1, FIG. 4 is an enlarged view of a portion B in FIG. 1, FIG. 5 is a schematic plan view showing a layout of a basic form, and FIG. 6 is a basic form of a corner portion. FIG.

That is, as shown in FIG. 1, a folded PC basic form (hereinafter referred to as a basic form) 10 of the present embodiment is formed on both sides of a house foundation 12 to be constructed (see FIG. 2). Is formed by a pair of bent PC plates 14 and 14 arranged along. That is, as shown in FIG. 2, the base 12 has a lower base 12a which is widened in the horizontal direction, as in the conventional case.
And a wall-shaped support portion 12b that stands upright from the center of the lower base portion 12a to form an inverted T-shaped cross section. Accordingly, the PC plates 14, 14 are formed with bent portions 14a, 14b corresponding to the corners C1, C2 formed on both sides of the base 12, and outside the bent portions 14a, 14b, As shown in FIGS. 3 and 4, a connecting member 16 as a joint member is fixed, and the bent portion 14 is connected via the connecting member 16.
a and 14b are foldably connected. The pair of bent PC plates 14 and 14 are opposed to both sides of a foundation 12 to be constructed by bending each in a substantially L-shape, and the lower, middle and upper portions thereof are connected via a separator 18. Thereby, both are fixed with an appropriate space therebetween. The PC plates 14, 14 may be assembled at a factory or the like and then carried into the site, or may be assembled at the site.

As shown in FIG. 5, the base formwork 10 is arranged along a base portion of a house, and concrete 20 is poured and filled between a pair of folded PC plates 14, 14. You. When the base form 10 is placed, a groove 22 having a predetermined depth is excavated in the ground G as shown in FIG. The frame 10 is placed. At this time, the height of the upper portion of the wall-shaped support portion 12b is appropriately protruded above the ground G. Then, the concrete 20 is cast from the upper openings of the bent PC plates 14 and 14.

When the basic form 10 is laid out as shown in FIG. 5, a corner form and an intersecting part are formed by using a separately provided basic form 10a as shown by hatching in FIG. The formwork 10a is connected to the base formwork 10 of the straight portion. FIG. 6 shows an example of the basic formwork 10a having a cross-shaped crossing portion, and shows a bent PC plate 2 having bent portions 26a, 26b and 26c.
6 are prepared, and the four folded PC plates 26 are arranged in a cross shape while maintaining a predetermined interval from each other, thereby forming the basic formwork 10a. Even in this case, each folded PC board 26 is fixed via a separator (not shown).

In this embodiment, the portion corresponding to the upper side of the lower base portion 12a of the base formwork 10 is formed in a substantially horizontal direction. However, as shown in FIG. It may be inclined, and by inclining in this way, the filling effect of the poured concrete 20 can be improved.

With the above configuration, the basic form 10 of this embodiment is
In this case, a pair of bending-type PC plates 14, 14 are bent from bent portions 14a, 14b to face each other, and are fixed to each other via a separator 18 to form the base formwork 10. Then, after arranging the foundation formwork 10 on the foundation portion of the house to be constructed, concrete 20 is poured and filled inward, and the concrete 20
The foundation 12 is constructed by curing and curing.

When the foundation 12 is constructed in this manner, the foundation formwork 10 is integrated with the cast concrete 20 to form a part of the foundation 12.
The subsequent work of removing the formwork is not required, and the work can be simplified. In addition, since the bent PC plates 14 and 14 constituting the base formwork 10 can be formed in advance in a factory or the like, it is sufficient to simply carry in the base formwork 10 to the site and install it. 12 can be significantly simplified, and from this point of view, labor saving can be achieved. Furthermore, when the folded PC plates 14 and 14 are manufactured using a molding die, surface treatment can be performed at this molding stage, so that there is no need for post-treatment on site. Furthermore, since there is no need to use veneer for the formwork, it is possible to contribute to environmental protection by saving timber resources.

The base form 10 is a folded PC plate 1
Since the outer surface of the foundation 12 to be constructed by the members 4 and 14 is covered and the inner side is hollow, it is possible to achieve a significant reduction in weight as compared with a foundation formed as a block body. For this reason, since the length of the base form 10 that can be carried in can be lengthened, the joining portion when installing the base form 10 is greatly reduced, and this joining work can be reduced.
Further, the base form 10 is provided with a pair of bent PC plates 14,1.
4 is fixed with the separator 18 interposed therebetween, so that a fixture such as a shoring is not required for assembling the formwork, and the attachment can be made simple and reliable. Furthermore,
Basic formwork 10a forming corners and intersections
Can be configured using a plurality of folded PC plates 26.

[0019]

As described above, according to the first aspect of the present invention,
In the case of the folded PC basic form shown in the above, since it is composed of a PC version that can be bent through the joint part,
Eliminates the need to remove the concrete form after the concrete placed on the foundation form has been hardened, and also allows the PC version to be formed in advance at the factory etc., facilitating on-site installation and greatly saving labor. Is possible. In addition, the surface treatment of the PC plate can be performed at the molding stage of the mold, and the need for post-treatment on site is eliminated. Furthermore, since the base form is hollow, significant weight reduction can be achieved, and furthermore, the length of the base form can be lengthened, and the joining portion can be significantly reduced. Furthermore, since a mold such as veneer is not required, it is possible to contribute to environmental protection by saving resources.

According to a second aspect of the present invention, a pair of the folded PC plates are provided on both sides of a foundation to be formed so as to face each other. Since it is fixed with an interval, it does not require holding tools such as supports for assembling the formwork, and its installation is easy,
In addition, various excellent effects that can be ensured are exhibited.

[Brief description of the drawings]

FIG. 1 is a sectional view of a folded PC basic form according to the present invention.

FIG. 2 is a perspective view of a foundation constructed according to the present invention.

FIG. 3 is an enlarged view of a portion A in FIG.

FIG. 4 is an enlarged view of a portion B in FIG. 1;

FIG. 5 is a schematic plan view showing a layout of a folded PC basic formwork according to the present invention.

FIG. 6 is a perspective view showing a corner portion of the bent PC basic formwork according to the present invention.

FIG. 7 is a cross-sectional view corresponding to FIG. 1, showing another embodiment of the present invention.

[Explanation of symbols]

10, 10a Folded PC basic formwork 12 Foundation 14 Folded PC version 14a, 14
b Bending part 16 Connecting member (joint member) 18 Separator 20 Concrete 26 Bending PC version 26a, 26b, 26c Bending part

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Sumio Hattori 3-8-2 Nihonbashi, Chuo-ku, Tokyo Inside Kuraray Co., Ltd. (72) Inventor Mitsuo Sugano 2-3-3 Horobetsucho, Noboribetsu-shi, Hokkaido Ueda Corporation (72) Inventor Etsunori Tamura 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Tokyo Obayashi Corporation Tokyo Head Office (72) Inventor Ritsuo Matsumura 2-3-3, Kandaji-cho, Chiyoda-ku Tokyo In-house (56) References JP-A-3-156031 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 27/01

Claims (2)

(57) [Claims] 1. A folding method wherein a bent portion corresponding to each corner of a foundation for a house is provided, and each bent portion is formed by a PC plate which is connected to bendable via a joint member. Bending PC basic formwork. 2. A folded PC plate is provided in a pair on both sides of a foundation to be formed, and the pair of folded PC plates is fixed at appropriate intervals via a separator. 2. The folded PC basic formwork according to 1.