JPH11182039A - Column form method and fastening metal fittings therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form method in which a unit itself is light-weight and it can be carried by hands and hence, which is efficient in reuse and inexpensive. SOLUTION: A plurality of column form panels 11 and fastening metal fittings 12 tightening adjoining column form panels together are provided to construct a column. The fastening metal fittings are constituted of fixing metal fittings 12a attached transferably in the horizontal direction to an adjoining column form panel, rotary ring metal fittings 12b rotatably equipped on the fixing metal fittings, bolt metal fittings 12c screwed in the rotary ring metal fittings, and corner metal fittings 12d fixed to the front end of the bolt metal fittings. Concrete is placed in the state the corner metal fittings 12d are arranged in the inside of the adjoining column form panels 11 and the column form panels 11 are removed by using the corner metal fittings 12d as supports in the placed concrete column 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column formwork method applied as an independent column formwork of any construction, such as RC structure, SRC structure and RCSS structure, and a technique of a fastening fixture used in the method. Belongs to the field.

[0002]

2. Description of the Related Art A conventional plywood formwork is provided by an independent column formwork method which is a main part of a reinforced concrete structure (RC structure) or a steel frame reinforced concrete structure (SRC structure). Needless to say, a steel unit mold construction method that can increase the number of diversions in consideration of the improvement of on-site productivity is often adopted.

In the plywood form method, as shown in FIG. 7, a plywood veneer dam 1 is assembled in a column shape, and hard end thick members 2 and side end thick members 3 are alternately arranged to form a separator metal member 4 and a foam tie. (Registered trademark) This is a construction method in which the whole is compacted so as not to be loosened with a fastener 5, assembled so as to withstand the lateral pressure of the concrete, and a column reinforcing bar 6 is arranged inside. However, the plywood form method, in which the number of mounting members is large, is low in material cost, but is disadvantageous in that it takes time and labor required for assembly and demolding.

[0004] As an example of a typical unit formwork method capable of increasing the number of diversions in place of the plywood formwork method, as shown in FIG. 8, two steel unit formworks 7 manufactured and processed into an L-shape are used. There is a method of laying so as to cover the column reinforcing bars 6, connecting the unit forms 7 to each other with the column clamps 9 and casting concrete.

However, SRC different from RC independent column type
When constructing an independent column type of RC or RCSS (column type: reinforced concrete / beam type: steel frame), removing and moving the unit is quite complicated, not only because the beam steel members become an obstacle but also work to separate the unit formwork. The task of moving two unit formwork using a lifting crane or caster hardware attached to the lower part of the unit formwork is not an inexperienced worker, but is unexpectedly cumbersome and costly on site. It is difficult to apply because it leads to up.

The present invention solves the above-mentioned conventional problems. The unit form itself is lightweight and portable, and is easily applied to an SRC or RCSS structure with a steel beam and has high conversion efficiency. An object of the present invention is to provide an inexpensive formwork method and a fastening fixture used in the method.

[0007]

For this purpose, the column formwork method according to the first aspect of the present invention comprises a plurality of column formwork panels 11 for constructing columns and adjacent column formwork panels. And a fastening fixture 12 for tightening the fastening fixture, the fastening fixture being mounted on an adjacent column form panel so as to be movable in a horizontal direction, and being rotatably mounted on the fastening fixture. A rotating metal fitting 12b, a bolt metal fitting 12c screwed to the rotating ring metal, and a corner metal fitting 12d fixed to the tip of the bolt metal fitting. Concrete is cast in a state where it is arranged inside the panel 11, and the column form panel 11 is removed from the cast column 19 with the corner metal 12d as a support receiver. Claim The invention described in the above is a fastening fixture used in the column formwork method according to claim 1, wherein the fastening fixture is attached to an adjacent column form panel so as to be movable in the horizontal direction. A metal fitting 12a, a rotary ring metal 12b rotatably mounted on the fixed metal piece, a bolt metal piece 12c screwed to the rotary ring metal piece, and a corner metal piece 12d fixed to the tip of the bolt metal piece. It is characterized by. Note that the numbers added to the above configuration are compared with the drawings for easy understanding of the present invention, and the present invention is not limited thereto.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a column formwork according to the present invention, wherein FIG. 1 (A) is an elevation view and FIG. 1 (B) is a plan view.

In FIG. 1, a unit formwork 10 constituting a column formwork according to the present invention is composed of a column formwork panel 11, a fastening fixture 12, a connecting fitting 13, and a column clamp fitting 15. Column formwork panel 11
A plywood veneer or a steel plate is used as a dam and is assembled with a wooden or steel frame. At both ends in the vertical direction, a connecting metal fitting 13 for joining adjacent column-shaped formwork panels 11 is attached. Reference numerals 16 and 17 are reinforcing members provided on the column-shaped form panel 11 in the vertical and horizontal directions. The column clamp fitting 15 is a column formwork panel 11 itself, which is designed to withstand a certain amount of lateral pressure on the concrete, but is installed so as not to cause an unacceptably large deflection when casting concrete. Pillar formwork panel 1
Due to the influence of 1, the interval is slightly wider than the normal interval.

FIGS. 2A and 2B show the connection fitting 13 shown in FIG. 1, wherein FIG. 2A is a plan view and FIG. 2B is an elevation view. The connecting members 13 are provided on the reinforcing members 16 on both sides of the column form panel 11.
The adjacent column-shaped form panels 11 are provided with connection flanges 13a overlapped with each other and tightened by inserting tapered pins 13b into holes formed in the connection flanges 13a.

FIG. 3 shows the fastening fixture 12 of FIG.
(A) is an exploded view, (B) is a plan view after assembling, (C) is an elevation view, and (D) is a perspective view. The fastening fixture 12 includes an L-shaped fixture 12a, a rotatable ring hardware 12b rotatably mounted thereon, and a rotatable ring hardware 12a.
b, a bolt hardware 12c, and a bolt hardware 12c
And a corner metal 12d fixed to the end of the fixing metal 12a, and long holes 12e are formed on both sides of the fixed metal 12a.

FIG. 4 shows the fastening fixture 12 of FIG. 1, wherein FIG. 4A is a plan view and FIG. 4B is an elevation view. A bolt 12f is inserted into the long hole 12e of the fixing hardware 12a,
The fixing hardware 12a is fixed to the reinforcing member 16 so as to be movable in the horizontal direction. Corner metal parts 12d are arranged in adjacent column form panels 11, and the adjacent column form panels 11 are tightly connected by tightening the rotating ring metal parts 12b. This makes it possible to keep the column-shaped frame panels 11 in a single state with a square U-shaped cross section, and it is also possible to disassemble the column-shaped frame panels 11 one by one. The corner fitting 12d has a function of closing a gap between corner portions of the adjacent column form panels 11 and a function as a support receiving when removing the column form panels 11 after concrete casting. It is a board.

FIG. 5 is a view for illustrating an embodiment of a column formwork method according to the present invention and illustrating a construction procedure. First,
(1) The column reinforcing bar 6 is erected, (2) the unit formwork 10 is set, (3) the unit formwork 10 is fastened with the column clamp hardware 15, (4) concrete is poured, and (5) concrete is put. After curing,
The unit form 10 is removed from the pillar 19, and (6) the unit form 10 is moved, the unit form is set in the next section, and the above procedure is repeated.

FIG. 6 is a diagram for explaining a procedure for removing the unit mold of FIG. When removing the unit form 10 from the mold, first, as shown in FIG.
When the rotating ring hardware 12b is loosened, the corner metal 12
Since d is supported by the column 19, the fixing hardware 12a moves as shown by the dotted line in the figure, and the unit form 10 is separated from the column 19 as shown in FIG. Next, FIG.
As shown in (1), the corner metal 12d is separated from the pillar 19 by rotating the bolt metal 12c, and the formwork is removed and moved. FIG. (D) shows a state where the fastening fixture 12 is tightened, and FIG. (E) shows a state where it is cut off.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made. For example, in the above-described embodiment, an example of a prism is described. However, the present invention is also applicable to a round pillar, and each mold surface can be disassembled and disassembled as a unit mold, and in some cases, each mold surface is joined. Can be moved in the closed state.

[0016]

As is apparent from the above description, according to the present invention, setting and moving of the mold can be easily performed, and the on-site work can be smoothly advanced. In addition, the formwork is not easily damaged without excessive work such as prying open with a bar or the like, and the number of diversions can be increased. In addition, the lightweight and portable formwork is not restricted by the lifting crane operation, has less time loss, and can improve the construction efficiency on site. In addition, it can be applied as an independent column formwork of any construction method such as RC construction, SRC construction and RCSS construction.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a column formwork according to the present invention,
Fig. (A) is an elevation view, and Fig. (B) is a plan view.

2 (A) is a plan view, and FIG. 2 (B) is an elevation view, showing a connection fitting 13 in FIG. 1;

3 (A) is an exploded view, FIG. 3 (B) is a plan view after assembly, FIG. 3 (C) is an elevation view,
FIG. (D) is a perspective view.

FIG. 4 is a diagram showing a part of the fastening fixture 12 shown in FIG. 1, and FIG.
Is a plan view, and FIG.

FIG. 5 is a view illustrating an embodiment of a column formwork method according to the present invention and illustrating a construction procedure.

FIG. 6 is a view for explaining a procedure for removing the unit mold of FIG. 5;

FIG. 7 shows a conventional plywood formwork method, wherein FIG. 7 (A) is an elevation view and FIG. 7 (B) is a plan view.

FIG. 8 shows an example of a conventional unit formwork method, and FIG.
Is an elevation view, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Column formwork panel 12 ... Tightening fixture 12a ... Fixing fixture 12b ... Rotating ring fitting 12c ... Bolt fitting 12d ... Corner fitting 19 ... Column

Claims (2)

[Claims] 1. A method according to claim 1, further comprising a plurality of column formwork panels for constructing the columns, and a fastening fixture for fastening adjacent column formwork panels, wherein the fastening fixtures are adjacent to each other. A fixing hardware that is movably attached to the column form panel in a horizontal direction, a rotation ring metal that is rotatably mounted on the fixing metal, and a bolt metal that is screwed to the rotation ring metal;
And a corner metal fixed to the tip of the bolt metal.Concrete is cast in a state where the corner metal is arranged inside an adjacent column form panel, and the concrete is cast on the cast column. A column formwork method characterized in that a column formwork panel is demolded using a corner metal as a support receiver. 2. A fastening fixture used in the column formwork method according to claim 1, wherein the fastening fixture is attached to an adjacent column form panel so as to be movable in a horizontal direction. It is characterized by comprising a metal fitting, a rotating metal fitting rotatably mounted on the fixed metal fitting, a bolt metal fitting screwed to the rotating ring metal fitting, and a corner metal fitting fixed to a tip of the bolt metal fitting. Tightening fixture.