JP2000045384A - Driving form method and driving form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a heat-insulating material rationally to a building frame in a driving form method, in which the concrete-constructed building frame is formed by using driving forms. SOLUTION: In the driving form method, forms, in which heat-insulating materials 16 are mounted beforehand on the internal surfaces of folded plates made of a metal plate while using the folded plates as form bodies 15, are employed as the driving forms when a beam 11, a floor 12 and a column as concrete-constructed building frames are formed by using the driving forms A, B, C. The heat-insulating materials 16 are set up beforehand on the internal surfaces of the form bodies 15 consisting of the folded plates made of the metal plate in the driving forms A, B, C. Beam-bottom forms 15a and beam-side forms 15b are integrally assembled beforehand in the form bodies 15 in the driving forms A for the beam.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving formwork method for forming a concrete frame using a driving formwork, and a driving formwork used therefor.

[0002]

2. Description of the Related Art As shown in FIGS. 5 (a) and 5 (b) ((b) is a view taken along the line bb in FIG. 5 (a)), a beam 1 and a floor 2, which are the skeleton of a concrete building, are shown in FIG. Although not shown, in the case where the heat insulating material 3 is attached to the surface of a pillar, a wall, or the like, a foaming heat insulating material (foamed polyurethane or the like) is generally sprayed on the surface after forming a frame, or a heat insulating molded plate (polystyrene foam or the like). ).

Further, as shown in FIGS. 6 (a) and 6 (b) ((b) is a view taken in the direction of arrow bb in FIG. 6 (a)), a driving tool for leaving a frame for forming a frame without dismantling it. Formwork 4
However, in such a case, the heat insulating material 3 is sprayed or attached to the surface of the driving form 4 in the same manner. FIG. 6 shows an example in which a steel plate folded plate, a so-called keystone plate, is used as the driving formwork 4 and foamable heat insulating material is sprayed on the surface of the keystone plate.

[0004]

However, the work of spraying a foamable heat insulating material or attaching a heat insulating molded plate on site is troublesome, and the use of an organic solvent at that time deteriorates the working environment and the risk of fire. Therefore, effective improvement measures have been required.

[0005]

DISCLOSURE OF THE INVENTION In view of the above circumstances, the invention of claim 1 is to form a concrete frame by using a driving form. In this case, a folded plate is used as a form body, and a heat insulating material is previously attached to an inner surface thereof.

[0008] The driving form according to the second aspect of the present invention is used in the above-mentioned driving form method, in which a heat insulating material is previously attached to an inner surface of a forming body made of a folded metal plate. It becomes.

A third aspect of the present invention relates to the driving form of the second aspect, in which the driving form is particularly used for forming a beam. Are previously assembled integrally.

[0008]

1 (a), 1 (b) and 2
(A) and (b) show the beam 11, floor 12, and column 13 which are the skeletons constructed by the driving form method of the present embodiment (all (b) are bb in (a)) Arrow view).
The beams 11, the floor 12, and the pillars 13 are respectively driven form A,
B and C are used. In each of the driving formwork A, B and C, a heat insulating material 16 is previously provided on the inner surface of a formwork body 15 mainly composed of a steel plate folded plate (keystone plate). They are attached together.

As shown in FIG. 1 (a), a driving form A for a beam has a beam bottom form 1 made of a keystone plate.
5a and the beam-side formwork 15b are assembled in a U-shape to form a formwork body 15, and a heat insulating material 16 is attached to the entire inner surface thereof. As shown in FIG. 1 (a), the driving form B for the floor is one in which a heat insulating material 16 is attached to the upper surface side of the main body 15 made of a keystone plate. As shown in FIG. 2 (b), a heat insulator 16 is attached to the inner surface of a mold body 15 made of a keystone plate.

[0010] The production of the driving formwork A, B, C can be performed easily, inexpensively and with high precision by spraying a foaming heat insulating material on a keystone plate or attaching a heat insulating molded plate in a formwork manufacturing factory. Although it can be manufactured, a preferred manufacturing method thereof will be described with reference to FIGS.

First, a U-shaped mold body 15 composed of a beam bottom mold 15a and a beam-side mold 15b as shown in FIG. 2B is manufactured by a keystone plate, and an inner mold as shown in FIG. A frame device 20 is prepared. The inner form device 20 can be slid in a state in which two sets of L-shaped steel plate dams 22 reinforced from the inside with angle members 21 are connected by supports 23 whose length can be adjusted, and the bottoms of both steel plates 22 are brought into close contact with each other. And the entire width dimension can be changed. The inner form device 20 is disposed inside the form body 15 as shown in FIG.
It is appropriately supported in a state where a gap 25 corresponding to the thickness of the heat insulating material 16 is ensured between the main body 15 and the mold body 15. And
As shown in (c), the gap 25 is filled with a foaming heat insulating material, and when it is formed, the support 23 is loosened and the inner mold device 20 is removed from the mold as shown in (d) to obtain a mold body. Fifteen
Driving formwork A in which a heat insulating material 16 is integrally formed on the inner surface of the beam
Is completed. If necessary, the surface of the heat insulating material 16 may be covered with a thin steel plate, an aluminum foil, or a paper plate. The frame device 20 may be attached to the heat insulating material 16 when it is removed from the mold, or the inner frame device 20 may be removed from the mold and then attached to the surface of the heat insulating material 16.

A procedure for constructing a skeleton using the above-described driving formwork A, B, C will be described with reference to FIGS. 4 (a), 4 (b) and 4 (c).

(A) shows a case of steel-frame reinforced concrete construction. After the construction and arrangement of the column steel frame 30 and the beam steel frame 31 have been completed, a total of four column driving forms C around the column steel frame 30 are provided. Build. A connection opening for beam connection is formed in the upper part of the column driving formwork C. It is also possible to individually build the four column driving forms C. However, similarly to the above-described beam driving form A, two or three column driving forms C are previously prepared. Of course, it is also possible to manufacture as a connection according to the pillar shape and to build it all together. Then, the above-mentioned beam formwork A is lifted from the floor surface and mounted on the outside of the beam steel frame 31, and both ends thereof are connected to the upper part of the column formwork C,
It is appropriately supported by a shoring work via the beam receiving end square beam 32. Subsequently, a floor driving form B (not shown) is installed so as to be continuous with the beam driving form A, floor reinforcement is provided thereon, and thereafter, in the column driving form C, Concrete is cast into the beam formwork A and the floor formwork B for the beam.

(B) shows a case of a reinforced concrete structure. After assembling a column reinforcing bar (not shown), a column driving form C is erected around the column reinforcing bar, and a beam driving form A is erected thereabove. Then, a floor driving formwork B (not shown) is installed in succession thereto. Then, the reinforcement of the beam rebar is performed in the driving form A for the beam, and the floor is disposed on the driving form B for the floor, and then the concrete is poured.

(C) shows a case where small beams made of reinforced concrete are to be constructed. A driving form A for a small beam manufactured corresponding to a cross section of the small beam is erected between the driving forms A for a large beam. Just do it.

Using the above-mentioned driving formwork A, B, C,
By performing the above procedure, the heat insulating material 16 is automatically driven into the surface layer of the skeleton at the same time as the skeleton is formed. Work becomes unnecessary, and thus workability can be greatly improved, which can contribute to shortening of construction period and reduction of construction cost. Of course, the use of an organic solvent, which is necessary for attaching the heat insulating material 16 as in the related art, is not required, so that the working environment can be prevented from deteriorating and the danger of fire can be avoided. This is also very effective in this respect.

In the present invention, it is optimal to use a steel folded plate (keystone plate) as the form body 15 as in the above embodiment, but it is preferable to use another metal folded plate such as aluminum. Is also possible. Needless to say, the present invention can be similarly applied to forming a wall.

[0018]

As described above, according to the driving formwork method of the first aspect of the present invention, the driving formwork in which a heat insulating material is previously attached to the inner surface of the formwork body made of a folded metal plate is used. Since the heat insulating material is used, the heat insulating material is automatically driven into the surface layer at the same time as the frame is formed.Therefore, the work of spraying the foaming heat insulating material or attaching the heat insulating molded plate after the frame is formed becomes unnecessary. This has the advantage that it can greatly improve, shorten the construction period and reduce the construction cost, and can also eliminate the use of the organic solvent required for attaching the heat insulating material, thereby avoiding the deterioration of the working environment and the danger of fire.

The driving form according to the second aspect of the present invention is one in which a heat insulating material is previously attached to the inner surface of a form body made of a folded plate made of a metal plate, so that it is most suitable for use in the above method. In particular, when the invention of claim 3 is applied to a driving form for a beam, the main body of the beam is formed by assembling the beam bottom form and the beam side form in advance, so that the whole beam form is formed. It can be handled in a lump and is easy to attach to the installation position.

[Brief description of the drawings]

FIG. 1 is a diagram showing a beam and a floor formed using a driving formwork according to an embodiment of the present invention.

FIG. 2 is a diagram showing a beam and a column.

FIG. 3 is a view showing an example of a method of manufacturing the beam driving formwork.

FIG. 4 is a diagram showing a construction procedure.

FIG. 5 is a diagram showing a conventional example in which heat insulation is applied to a skeleton.

FIG. 6 is a diagram showing another conventional example in the case of providing heat insulation to a skeleton.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Beam (frame) 12 Floor (frame) 13 Column (frame) A, B, C Driving formwork 15 Formwork body 16 Insulation material

Claims (3)

[Claims] 1. A method of forming a concrete frame by using a driving form, wherein a folded plate made of a metal plate is used as the driving form, and a heat insulating material is provided on an inner surface of the main body. A punching formwork method characterized by using a pre-installed one. 2. A driving form used in the driving form forming method according to claim 1, wherein a heat insulating material is previously attached to an inner surface of a form main body formed of a folded plate made of a metal plate. Driving formwork. 3. The driving formwork according to claim 2, wherein said formwork body is previously assembled integrally with a beam bottom formwork and a beam side formwork.