JP2533238Y2 - Fire-resistant coating structure of steel round column - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof covering structure for a steel round pillar.

[0002]

BACKGROUND OF THE INVENTION Conventionally, steel as fireproof covering structure of round column, the circumference of the steel round column a 6, a cylindrical refractory coating portion b assembled from arcuate fireproof coating materials b ₁ Thus, there has been proposed a structure in which a gap c based on a gap holding block f is concentrically surrounded by a gap c.

In this type of conventional fire-resistant coating structure, each of the fire-resistant coating materials b ₁ constituting the fire-resistant coating portion b is
The lip grooved steel as the light iron base d fixed to the steel round pillar a by the application of the welding means is fixed by applying the tapping screw e to the lip grooved steel. Not only is it difficult to secure human resources,
Curing of the spark generated during the welding operation was required, which was troublesome.

The present invention has been made to eliminate such a conventional problem.

[0005]

[Means for Solving the Problems] The present invention relates to a steel round column.
The steel circle
Equipped with a cylindrical refractory coating surrounding the column concentrically
In the fire-resistant coating structure, the above-mentioned fire-resistant coating part has a large number of arcs.
When formed by connecting the refractory coating material in the vertical and horizontal directions
On the back side of the arc-shaped refractory coating on one side based on the seam
Pre-attach and fix the metal plate across the seam
By doing so, the refractory coating is formed
Plate-shaped metal parts are not connected vertically and horizontally on the back side of the seam of the coating part.
Are arranged in a continuous pattern, and the back side of the metal plate is
Each is supported free by a lock.
The refractory coatings that make up the refractory coating are mutually external
Screwed into the above metal plate
The present invention relates to a fire-resistant covering structure of a steel round column characterized by being combined .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 schematically shows the entire refractory coating structure of the present invention, in which a three-stage refractory coating portion 1 is shown, but the number of steps is not particularly limited.

FIG. 2 schematically shows a state at the time of assembling the lowermost refractory coating 1A.

In order to assemble the cylindrical refractory coating 1A, a pair of left and right semi-cylindrical refractory coatings 2 are used. Plate-shaped metal members 3 and 3 ′ are attached and fixed to the upper and lower ends by applying tapping screws 4.

The metal plates 3, 3 'are made of a steel plate, preferably a galvanized steel plate, and are curved to have a curvature along the back surface of the semi-cylindrical refractory coating material 2. The lower plate-shaped metal member 3 'has a relatively small upper and lower width, and is fixedly attached to the back surface of the right-side refractory coating material 2 in the right half 3a', and the left half 3b 'projects outward. The upper plate-shaped metal piece 3 is about twice as large as the lower one, and is fixed to the back surface of the right-side refractory coating material 2 in the right half 3a of the lower half. Projecting to

On the other hand, the surface of the steel round pillar 5 is previously set at a position corresponding to the upper and lower plate-shaped metal members 3, 3 '.
Are adhered and fixed under the application of an adhesive. Although the figure shows a case where the spacing holding block 6 is provided at four locations by being divided vertically and horizontally, it may be provided only at the top and bottom and provided at two locations, or the whole may be one object. .

In the state shown in FIG. 2, when the left and right semi-cylindrical refractory coatings 2 and 2 are joined so as to form a cylinder, the back surface of the left semi-cylindrical refractory coating 2 has upper and lower plates. Of the metal fittings 3, 3 ', the left half 3b' is in contact with the lower end, and the left half 3b of the lower half is in contact with the upper end. Then, in this state, the upper and lower plate-shaped metal fittings 3, 3 ′ are fixed to the left refractory coating material 2 by using tapping screws 4 screwed from the front side of the left refractory coating material 2.
By fixing the lower refractory coating 1A as shown in FIG. The spacing holding block 6 is shown in FIG. 4 so that the tapping screw 4 is smoothly inserted into the metal plate 3, 3 'when the tapping screw 4 is screwed. As described above, a gap 7 is formed between the lower refractory coating 1A and the steel round pillar 5 after assembly.

Similarly, the middle refractory coating portion 1B and the upper refractory coating portion 1C are assembled to apply the refractory coating to the entire length of the steel round pillar 5, that is, the range from the floor surface 8 to the height slightly above the ceiling surface 9. be able to. In this case, FIG.
The upper plate-shaped metal part 3 shown in FIG.
A and 1B are used as hardware for joining and integrating. Similarly, the middle and upper refractory coating portions 1B and 1C may be combined and integrated.

At the upper end of the refractory coating 1, as shown in FIGS. 1 and 5, the lid 1 is closed so as to close the upper end of the gap 7.
0 and the steel round pillar 5 above the lid member 10.
The sprayed layer 11 of rock wool or the like can be formed on the bare portion 5a of the above.

In the present invention, a molded plate made of a refractory material such as calcium silicate can be used as the refractory coating material 2. The gap holding block 6 and the lid member 10 may be made of the same material as the refractory coating material 2.

[0016]

According to the refractory coating structure of the present invention, the refractory coating can be constructed without the need for welding work, and thus without the need for experience and skill. Complicated work such as curing of sparks can be omitted. Further, the metal plate is previously attached and fixed to the arc-shaped refractory covering material on one side based on the seam, and when assembling the cylindrical refractory covering portion from the refractory covering material, the back side of the joint of the refractory covering portion is used. Since it is configured so that it can be arranged in, it is possible to omit the application of complicated mounting and fixing means such as welding means and adhesive means seen when mounting and fixing the plate-shaped hardware to a steel round pillar, Further, in order to screw the tapping screw into the metal plate from the outside, it is necessary to support the metal plate from the back side by some means, but in the present invention, the space holding block is used as a support means. Therefore, the use and installation process of such a support member can be omitted, and a fire-resistant coating structure of a steel round column with good workability as a whole can be provided. Furthermore, since the metal plate is located at the seam and is in direct contact with the back surface of the refractory coating, it will be heated to a considerably high temperature in the event of a fire, but in the present invention, the metal plate is not used. Since it is arranged discontinuously in the vertical and horizontal directions at the seam, even if it is heated to a high temperature, the amount of thermal deformation per sheet metal is small. And fireproof coating performance can be stably and reliably maintained. By the way, the use of a metal through-hole is not preferable because the amount of thermal deformation increases when heated at a high temperature in a fire, a gap is generated at a joint, and the fire resistance is reduced or lost.

[Brief description of the drawings]

FIG. 1 is an overall view schematically showing one embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the cylindrical refractory coating is being assembled.

FIG. 3 is a perspective view showing the assembling state.

FIG. 4 is a partially enlarged view taken along line 4-4 of FIG. 1;

FIG. 5 is a partially enlarged cross-sectional view of an upper end portion of the refractory coating.

FIG. 6 is an explanatory view of a conventional fireproof covering structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fire-resistant coating part 2 Fire-resistant coating material 3 Plate metal fitting 4 Tapping screw 5 Steel round pillar 6 Spacing block 7 Circumference 8 Floor surface 9 Ceiling surface 10 Lid

Claims (1)

(57) [Scope of request for utility model registration] An interval fixing block bonded and fixed to an outer peripheral portion of a steel round column.
A circle concentrically surrounding the steel round column via a lock
In the fire-resistant coating structure having a tubular fire-resistant coating,
The fire cladding is made of a large number of arc-shaped refractory cladding
Formed by connection, one side arc based on the seam
A metal plate is placed on the back side of the refractory coating so as to cross the seam.
By attaching and fixing to the
At the same time as the formation of the part, a sheet metal
Objects are arranged discontinuously in the vertical and horizontal directions, and
The back side is free by the above spacing block
The fireproof that is supported and constitutes the above fireproof coating
The coating material is a tapping from outside to the metal plate.
A fire-retardant covering structure for a steel round column, which is integrally connected by screwing of the same .