JPH0765353B2 - Fireproof coating construction method for steel frames - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fireproof coating construction method for a pillar or the like of a steel frame building.

[Prior Art] Generally, in a fireproof coating construction method for a pillar of a steel frame structure, as shown in FIG. 2, rock wool b is sprayed to a predetermined thickness on the peripheral surface of the steel frame a, and the sprayed rock wool layer A light iron base c is erected on the peripheral surface and a plaster board or the like d for finishing is attached to cover the entire surface.

[Problems to be Solved by the Invention] According to such a conventional fireproof coating construction method for steel frames, the finished dimension of the pillar or the like becomes large and the internal effective space of the building becomes narrow. Especially in urban areas, there is a strong demand to secure as much internal space as possible due to the rise in land prices.

The present invention has been made in order to meet such a demand, and by combining the stone wool and gypsum board, etc., in which the internal effective space of the building can be made as wide as possible by keeping the finished dimensions of the pillars etc. as small as possible. It is a technical subject to provide a fireproof coating construction method for steel frames.

[Means for Solving the Problem] As a means for solving the technical problem, the present invention provides a rock wool layer having a light iron underlayer incorporated therein on the peripheral surface of a steel column or the like. The gist is to attach a finishing gypsum board or the like to the light iron base portion exposed on the surface of the cotton layer to cover the peripheral surface.

[Operation] Since the light iron groundwork is incorporated inside the rock wool layer, compared to the conventional light iron groundwork that has a light iron groundwork, the finished dimensions of pillars, etc. with gypsum board etc. Becomes smaller, and the effective space inside the building can be widened accordingly.

[Examples] Hereinafter, the present invention will be described in more detail with reference to examples in which the present invention is applied to the illustrated steel frame columns.

In FIG. 1, reference numeral 1 is a steel column, and a light iron underlayer 2 is erected on the peripheral surface thereof, and rock wool is sprayed so that the light iron underlayer is incorporated inside and a rock of a predetermined thickness is formed. The cotton layer 3 is formed. At this time, the outer surface 2a of each light iron substrate is exposed so that the light iron substrate 2 is not completely embedded in the rock wool layer 3, and the rear surface 2b of the corner light iron substrate is also exposed. Moreover, in order to suppress the temperature rise due to heat conduction from the steel-framed column 1, the steel-framed column 1 is set up so as not to come into direct contact with it. After the rock wool layer 3 is dried and cured, a plaster board 4 for finishing is attached using the exposed side surface 2a and the back surface 2b of the light iron substrate 2 to cover the peripheral surface. At this time, a gap 5 is formed between the gypsum board 4 and the rock wool layer 3 between the light bone bases 2.

In this way, the fireproof coating of the pillars or beams is performed, but in the case of the present invention, the light bone foundation 2 is the rock wool layer 3 as described above.
Since it is incorporated into the inside of the column, the finished dimension l of the pillar or the like can be made smaller than the conventional dimension L. Therefore, the effective space inside the building can be widened by the smaller size. Since the light iron base 2 is incorporated into the rock wool layer 3, the steel frame 1 is heat-transferred through the light iron base.
Although it will be somewhat disadvantageous to the temperature rise of the above, as mentioned above, the light iron base 2 is erected so as not to come into direct contact with the steel pillar 1, or there is a gap between the plaster board 4 for finishing and the rock wool layer 3. Since the air layer of 5 is formed, it is possible to secure sufficient fire resistance.

On the other hand, as another embodiment of the present invention, although not shown, the rock wool layer is not formed by spraying rock wool, but the rock wool board previously cut into a predetermined size is formed into the light iron base 2 You may make it insert in between and form a rock wool layer. Compared with the case of spraying, this rock wool board has the advantages that rock wool can be prevented from scattering, curing can be shortened because no curing is required, and that even non-experts can perform construction. .

The present invention is not limited to steel columns, but can also be applied to steel beams, and is not limited to those of this example even with a finishing gypsum board, for example, lightweight cement board, asbestos slate. Any decorative board such as a board or a decorative asbestos slate board that is used for architectural finishing may be used.

[Effects of the Invention] As described above, according to the present invention, in the fireproof coating construction method for the steel frame in which rock wool and gypsum board and the like are combined, the light iron base is incorporated inside the rock wool layer. , The finished size of pillars or beams with gypsum board etc. is smaller than that of the conventional rock iron layer with light iron base, and the effective space inside the building can be widened accordingly. If a rock wool board is used instead of spraying a rock wool layer, it has excellent effects such as preventing the rock wool from scattering and shortening the construction period.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part according to an embodiment of the present invention, and FIG. 2 is a sectional view of an essential part of a conventional example. 1 …… Steel column, 2 …… Light iron foundation 3 …… Rock wool layer, 4 …… Gypsum board, etc. 5 …… Gap

Claims (1)

[Claims] Claims: 1. A rock wool layer having a light iron underlayer incorporated therein is provided on the peripheral surface of a steel column or the like, and a gypsum board or the like for finishing the light iron underlayer exposed on the surface of the rock wool layer. A fire-resistant coating construction method for steel frames, which is characterized in that a peripheral surface is attached by mounting.