JPH04231533A - Finish backing of steel column and beam - Google Patents

Abstract

PURPOSE:To reduce the fabrication cost by covering a steel frame with a lightweight surface plate which is made of a material fitting well to mortar and also used as a form and by pouring lightweight air mortar in the form. CONSTITUTION:An H section or another steel frame forming a column or beam is covered with a high-strength, lightweight surface plate which is made of a material containing melamine resin and fitting well to mortar and also used as a form. The form 2 is filled with lightweight air mortar 3 to integrate the steel frame 1 with the surface plate 2. This improves the heat insulating and fire resisting properties and prevents dew condensation and corrosion. This constitution provides a structure which gives a good mass feeling at a low cost.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in the finishing of buildings, particularly columns and beams suitable for exposed surfaces.

0002

2. Description of the Related Art Pillars and beams in conventional buildings have been constructed as shown in FIG. 4 or 5. In FIG. 4, A is a steel frame that is an H-type steel, and B is the steel frame A.
A coating made of asbestos or rock wool with fire-retardant properties that is sprayed onto the surface of the building. In addition, in Fig. 5, the steel frame A in Fig. 4 is an H-shaped steel, whereas the steel frame A is
It is the same except that column steel is used. C is the coating material B
The base assembly C is a lightweight steel frame fixed to the surface of the base assembly C, and the surface material D such as plasterboard is attached using this base assembly C.

0003

[Problems to be Solved by the Invention] However, in the conventional method described above, since it is necessary to spray the steel frame A with asbestos material or rock wool material, which is a harmful substance, which is the covering material B, In addition to causing health problems for workers,
In order to install the surface material D, which is a decorative board such as plasterboard, it is necessary to install the base assembly C.
As the number of work hours increased, a lightweight steel frame, which is the foundation assembly C, was also required, increasing costs, prolonging the construction period and increasing construction costs.

The present invention is intended to solve the above-mentioned problems, and its purpose is to make it possible to use the formwork as a surface plate and to use a thin material as the formwork, thereby reducing costs. To provide a column and beam finishing ground for a steel frame structure which can prevent corrosion of the steel frame and has an excellent sense of mass because it has excellent heat insulation and fire resistance effects and can prevent dew condensation.

[0005]

[Means for Solving the Problems] The steel frame column and beam finishing ground of the present invention is intended to achieve the above-mentioned objects.
The method is to use a steel frame, which is the aggregate material for columns and beams, and a surface that also serves as a formwork, which is made of lightweight, strong, and plate materials that are placed around the steel frame and are compatible with lightweight air mortar. It is composed of a face plate and air mortar filled between the steel frame and the face plate.

[0006]

[Function] The column and beam finishing base of the steel frame structure of the present invention constructed as described above has a surface plate surrounding the steel frame that also serves as a formwork made of a lightweight, high-strength plate material that is compatible with lightweight air mortar. and air mortar is filled between the surface plate and the steel frame.

[0007]

[Example] Hereinafter, examples of the finishing ground of steel frame columns and beams according to the present invention will be explained with reference to the drawings. 1 is a steel frame such as H-shaped steel, 2 is a U-shaped structure surrounding the steel frame 1. 3 is the steel frame 1 and the surface plate, which also serves as a formwork, and is made of mortar mixed with melamine resin and has high strength and is compatible with lightweight air mortar. It is a lightweight air mortar filled between 2 and 2. In addition, the surface plate 2 in the above-mentioned embodiment
Although the outer shape is square, it goes without saying that this shape may be any shape such as a round shape or a wavy shape.

[0008] Next, an example of a method for constructing the finished ground of columns and beams of this steel frame structure will be explained with reference to FIG. First, a nut 4a is welded to a desired position on the steel frame 1, and a bolt 4 is screwed into the nut 4a. Then, the tip of this bolt 4 is inserted into the insertion hole 2a of the surface plate 2, and then the metal plate 5 having the mounting hole 5a is fixed using a nut 6. Next, from the surface of this metal plate 5, screws 7 are screwed into concrete nuts 2b previously driven into the surface plate 2 to temporarily fix the metal plate 5.

After the steel frame 1 is surrounded by the surface plate 2 in this manner, lightweight air mortar 3 is filled from the upper opening of the steel frame 1. At this time, the lightweight air mortar 3 has a very low specific gravity compared to concrete, so when it is filled, it does not apply much load to the surface plate 2, so the surface plate 2 does not require strength. and,
Temporary fixation also does not require strength. Then, after waiting for the lightweight air mortar 3 to harden, the screws 7 and bolts 4 are removed, the metal plate 5 is removed, and the holes 2a and concrete nuts 2b are filled, thereby making the surface of the surface plate 2 clean.

Another construction method will be explained with reference to FIG. This construction method involves arranging the surface plate 2 so as to surround the steel frame 1, fixing several places on the outer periphery of the surface plate 2 with bands 8, and then opening the upper opening of the steel frame 1 in the same manner as described above. A lighter air mortar 3 is filled, and once the lighter air mortar 3 has hardened, the band 8 is removed. In this case, since the specific gravity of the lightweight air mortar 3 is small, it is possible to fill the lightweight air mortar 3 even when the surface plate 2 is temporarily fixed by the band 8.

[0011] This construction method is advantageous in that it does not require any post-treatment of the surface plate 2 compared to the construction method described above, since it is not necessary to make holes in the surface of the surface plate 2. In the above-mentioned embodiments, H-shaped steel was used as the steel frame, but it goes without saying that a pipe-shaped steel frame such as column steel may also be used.

0012

Effects of the Invention As described above, the present invention surrounds a steel frame with a surface plate that also serves as a formwork and is made of a plate material that is lightweight, has high strength, and is compatible with lightweight air mortar. Since air mortar is filled between the steel frame and the frame, the formwork can be used as a surface plate, and thin material can be used as the formwork, reducing costs. Moreover, since it can prevent dew condensation, corrosion of the steel frame can be prevented, and the feeling of mass is excellent.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the finished ground of columns and beams of a steel frame structure according to the present invention.

FIG. 2 is a partial cross-sectional view showing the construction method of the above.

FIG. 3 is a partial cross-sectional view showing another construction method.

FIG. 4 is a sectional view of the finished ground of columns and beams of a conventional steel frame structure.

FIG. 5 is a sectional view of the finished ground of columns and beams of a conventional steel frame structure.

[Explanation of symbols]

1 Steel frame 2　Surface plate 3. Lightweight air mortar

Claims (1)

[Claims] Claim 1: A steel frame that is the aggregate of columns and beams, and a lightweight, high-strength steel frame arranged to surround the steel frame, and
A steel-framed column characterized in that it is composed of a surface plate that also serves as a formwork and is made of a plate material that is compatible with lightweight air mortar, and lightweight air-air mortar that is filled between the steel frame and the surface plate. , finishing ground of beams.