JPH0533491A - Pc column form - Google Patents

Abstract

PURPOSE:To surround a core part of a PC column to be built, at the sides thereof. CONSTITUTION:A PC column form 10 is composed of a pair of form parts 12 each having PC plates 16 for forming two adjacent side surfaces of a column, which are connected together through the intermediary of a bendable V-groove 14. An L-like locking member 8 is secured to each of opposite end parts of each of the form parts 12. The PC plates 16 of the pair of form parts 12 are bent at the V-grooves 14, and are opposed to each other so as to surround a column core. The locking members 18 adjacent to each other are connected together by means of connecting members 22, and then concrete is placed in the form parts 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PC pillar formwork in which pillar concrete is placed and integrated with it.

[0002]

2. Description of the Related Art In recent years, when building a pillar of a building,
A hollow cylindrical PC column form surrounding the core part of the column was built in the site, and by placing concrete in this form, this form was integrated with the placed concrete. There is a construction method for constructing as a pillar, and as a PC pillar formwork used at this time, for example, actual Kaihei 3-4041
The one proposed by Japanese Patent Publication No. 7 is known.

[0003]

However, such a conventional PC column formwork is integrally formed as a hollow cylinder, and although it can be easily applied to a reinforced concrete column, it cannot be applied to a reinforced concrete column or reinforced concrete column. It was difficult to apply to pillars. That is, in the former reinforced concrete column, the core portion is composed of a reinforced cage composed of a column main reinforcement and a shear reinforcement, and after the PC column form is built, this reinforced basket is inserted into the PC column form from above. However, in the case of the latter steel-framed reinforced concrete column or the like, the core portion is composed of a steel-framed column, column main bars, and shear reinforcing bars, and a steel-beam is already connected to the steel-framed column so as to project laterally.

Therefore, in the case of a steel-framed reinforced concrete column or the like, it is impossible to insert the PC column formwork from above due to the beam obstruction. Therefore, the construction of the formwork must rely on the conventional construction method using a wooden frame. I don't get. However, the conventional construction method using a wooden frame has problems such as a large amount of labor required for its attachment and detachment and a large amount of waste material generated.

In view of such conventional problems, it is an object of the present invention to provide a PC column formwork that can be preferably applied to steel-framed concrete columns and steel-framed reinforced concrete columns.

[0006]

In order to achieve the above object, the PC pillar formwork of the present invention is formed in a flat plate shape, and a bent groove is formed at a position which becomes a corner of the pillar in the middle thereof. ,
A PC partial formwork provided with locking members at both ends, and a connecting member for connecting the locking members so as to construct a column outline by the pair of PC partial formwork bent by the bending groove. It is characterized by having.

[0007]

In the PC pillar formwork of the present invention having the above construction, the outer shape of the pillar to be constructed is composed of a pair of PC partial formworks. By arranging from the side of the pillar, the form can be built so as to surround the core part. Then, after arranging in this way, the locking members provided at both ends of each partial formwork are connected to each other by the connecting members, so that the partial formworks are coupled to each other and concrete is poured into the interior of the formwork. It is possible.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 5 show a PC showing an embodiment of the present invention.
FIG. 1 is a perspective view of a column mold 10 in an assembled state, FIG. 2 is a perspective view in which a partial mold is developed, FIG. 3 is an enlarged perspective view of an essential part, and FIG. FIG. 5 and FIG. 5 are enlarged plan views of the essential parts in the assembled state.

That is, as shown in FIG. 1, the PC pillar formwork 10 of this embodiment comprises a pair of partial formwork 12, 12. As shown in FIG. 2, the partial formwork 12 is formed in a flat plate shape including PC plates 16 and 16 that form two adjacent side surfaces of a column to be constructed.
V-groove 14 that can be bent at a position that becomes a corner of a pillar between 6 and 16
Is formed, and the locking members 18, 18 are fixedly provided at both ends.

The partial formwork 12 is molded in a factory or the like in a state where the two PC plates 16 and 16 are expanded, and the locking members 18 and 18 are attached before the concrete is hardened during the molding. The V groove 14 is
It is formed at a position that will be the corner of the pillar when the C pillar form 10 is built in the site, and this V groove 14 is formed by arranging a face plate whose cross section is a right triangle when molding. You can

As shown in detail in FIG. 3, the locking member 18 is formed of metal or plastic and has a long side 18a and a short side 18b in an L-shaped cross section. Short side 18b
Is fixed to the PC plate 16 via a plurality of nails 20, and
The long side 18a is projected in parallel with the PC plate 16 at a predetermined interval.

Then, the PC pillar formwork 10 is constructed by using two such partial formworks 12, 12, and at the site, the PC plates 16, 16 of each of the partial formwork 12 are bent at the V-grooves 14 to face each other. The locking members 18, 18 adjacent to each other are coupled to each other.

The locking members 18, 18 are connected by using the connecting member 22 shown in FIG. This connection member 2
2 is made of metal or plastic, and is provided with a plurality of right-angled hook portions 22a, 22a.
It is configured by arranging 2a and 22a in a comb shape via a connecting portion 22b. Then, as shown in FIG. 5, the hook portion 22a is attached to the long side 18a of the locking member 18 and the PC plate 1
By locking between 6 and 6, these locking members 18,
The 18 parts are connected to each other to connect the partial mold forms 12, 12.

With the above construction, the PC column formwork 1 of this embodiment
In the case of 0, the PC plates 16 and 16 which form the outer shape of the pillar to be constructed are formed, and these PC plates 16 and 16 are connected to the V groove 1
Since one partial formwork 12 is configured to be bendable from 4, when the PC pillar formwork 10 is built on site, two of the partial formwork 12, 12 are used, and these two partial formwork 12, 12 are used. By arranging from the side of the pillar under the beam,
It can be built so as to surround the core part.

After the above arrangement, the locking members 1 provided at both ends of the respective partial formwork 12, 12 are arranged.
By connecting 8 and 18 to each other using the connecting member 22, the partial formwork 12 and 12 can be connected to each other. Then, by placing concrete inside these partial formwork 12, 12, it is possible to construct a pillar integrated with the PC pillar formwork 10. The partial formwork 1
By constructing a simple seal with a sealing film 24 such as a gum tape on the outside of the connection portion of 2, 2 as shown by the chain double-dashed line in FIG. It is possible to simplify the finishing of the outer side of the pillar after doing.

Therefore, in the PC pillar formwork 10 of this embodiment, since the formwork can be built from the side of the pillar to be constructed by using the two partial formwork 12, 12, the steel frame The PC column formwork 10 can be easily applied to concrete columns and steel-framed reinforced concrete columns, the construction work of the columns can be performed easily and quickly, and the construction period can be greatly shortened.

Further, the PC column formwork 10 of this embodiment exhibits a particularly excellent effect when used for a steel-framed reinforced concrete column, but even for a reinforced concrete column that does not use a steel frame for the column core, the PC column of this example is used. It goes without saying that the mold 10 can be used.

FIG. 6 shows another embodiment, in which a groove-shaped steel 30 having a U-shaped cross section is used as a locking member, and the lower half of the groove-shaped steel 30 is embedded in the PC plate 16 to make the groove-shaped steel 30. The upper half of 30 is projected from the PC plate 16 in an L shape, and the same configuration as that of the above embodiment can be obtained.

[0019]

As described above, in the PC pillar formwork of the present invention, the outer shape of the pillar to be constructed is composed of a pair of PC partial molds, and both end portions of each partial formwork are formed. It is possible to connect the provided locking members to each other with a connecting member, arrange these partial forms from the side of the pillar under the beam, and build them so as to surround the core part, and then connect the partial forms to each other. As a result, the PC column formwork can be applied to steel-framed reinforced concrete columns, etc., where steel beams have already been attached, making it possible to simplify the concrete pouring work using the formwork and greatly reduce labor. In addition to being able to do so, it has an excellent effect that the construction period can be greatly shortened.

[Brief description of drawings]

FIG. 1 is a perspective view showing an assembled state of an embodiment of a PC pillar formwork according to the present invention.

FIG. 2 is an exploded perspective view of a partial formwork used in an embodiment of the present invention.

FIG. 3 is an enlarged perspective view of a main part of a partial formwork used in an embodiment of the present invention.

FIG. 4 is a perspective view of a main part of a connecting member used at the time of assembling of an embodiment of the present invention.

FIG. 5 is an enlarged plan view of an essential part of an assembled state of an embodiment of the present invention.

FIG. 6 is an enlarged perspective view of an essential part corresponding to FIG. 3, showing another embodiment of the present invention.

[Explanation of symbols]

 10 PC Column Formwork 12 Partial Formwork 14 V Groove 16 PC Plate 18 Locking Member 22 Connection Member

Claims (1)

Claim: What is claimed is: 1. A PC partial mold which is formed into a flat plate shape, and a bending groove is formed at a position which becomes a column corner portion of an intermediate portion thereof, and locking members are provided at both end portions. A PC column formwork, comprising: a frame; and a connecting member for connecting the locking member so as to construct a column outer shape with a pair of the PC partial formwork bent by the bending groove.