JP2001059289A - Fire resistant coating structure of steel framed skeleton and metal fitting for fire resistant panel for coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire resistant coating structure of a steel framed skeleton which is excellent in workability, can enlarge the effective area of the building, effectively prevent thermal influence from affecting the steel framed skeleton, and has an excellent durability and metal fittings for a fire resistant cover panel used for the structure. SOLUTION: A fire resistant panel is attached astride at least two external faces at a corner of a steel framed square column so as to form a substantially L-shaped form as a whole. A metal fitting 10 having a roughly Ω-shaped section is attached to a corner of the steel framed square column. Further, a fire resistant panel is fixed by screws with a minute gap from the external face of the steel framed square column on the surface of the metal fitting 10. The metal fitting 10 is formed to have a substantially L-shape as a whole to correspond to the corner of the steel framed column so that the fire resistant panel crossing at right angles can be fixed by screws. Further, the main body 10' formed to have a leg with a substantially L-shaped or U-shaped section and a perpendicular part 12a which can touch the external face of the corner of the square column at the upper and lower ends of the perpendicular face 11, is provided to constitute the metal fitting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a steel frame of a building,
For example, the present invention relates to a fire-resistant coating structure such as a column or a beam, and an improvement in a shape of a mounting bracket of a fire-resistant coating panel such as a lightweight cellular concrete (hereinafter, referred to as "ALC") panel used in the structure.

[0002]

2. Description of the Related Art Conventionally, in the case of forming a fire-resistant structure by covering the surfaces of columns and beams of a steel frame of a building with a fire-resistant insulating material, a slurry-like fire-resistant insulating material is formed on the surfaces of the columns and beams. And a dry method in which a fire-resistant panel is attached to the surface of the column or beam to cover it. The former wet method is relatively inexpensive, but not only takes a long time to dry the sprayed refractory heat insulating material, but also has a problem that it tends to be partially peeled off after a long period of time to lower the fire resistance. When the covering portion is exposed, there is a problem that the appearance is not good.

On the other hand, there are various methods of the latter dry method, for example, as shown in FIG. 21, legs 3a of a C-shaped steel 3 are welded to the outer surfaces of four sides of a steel prism 1 at intervals of 600 to 900 mm. A fireproof panel such as an ALC panel 2 having a thickness of about 37 to 50 mm is screwed with a wood screw 4 on a surface 3b parallel to the above to form a fireproof coating structure. In this method, the appearance is good and the refractory coating does not peel off. However, not only is it troublesome to weld the legs 3a of the C-shaped steel 3, but also the distance between the outer surface of the prism 1 and the back surface of the ALC panel 2 is increased. Is 35 to 50 mm and the overall outer dimension is large, so that the effective area of the building is reduced.

[0004] Further, since the ALC panel 2 is fixed to the steel prism 1, it is difficult to absorb the difference in thermal expansion between the two, and there is a problem that the ALC panel 2 is easily damaged by the difference in thermal expansion. Also, as described in JP-A-7-324401, a flat plate is attached to the long side of the ALC panel with ALC nails, and A
There is also a method of screwing the LC panel with a tapping screw to form a refractory coating. In this case, there is no problem as described above,
Since the ALC panel is placed in direct contact with all four outer surfaces of the steel prism and fixed to eliminate the necessity of base metal fittings, there is a possibility that the thermal effects of a fire etc. will directly affect the steel prism via the ALC panel. Due to the high thermal expansion of the steel prism, the ALC panel is pushed out and deformed, and suffers from throat damage, so the heat resistance performance is poor, and when attaching the flat plate with ALC nails, Care must be taken to prevent the tip of the nail from contacting the reinforcing lath buried in the ALC panel, and there has been a problem that workability has been significantly reduced.

Further, as shown in FIG. 22, when one outer surface of the steel prism 1 faces the inner surface of the wall 5, the C
After inserting a refractory heat insulating material 6 such as rock wool between the section steel 3 and the inner surface of the wall 5, the ALC panel 2 is attached to the three outer surfaces of the steel prism 1 in the same manner as described above to form a refractory coating structure. However, in this case, if the position of the refractory heat insulating material 6 shifts or comes off during a long period of time, there is a problem that its function is deteriorated.

Further, the ALC panel 2 is attached to the beam 7 of the H-shaped steel.
When a fireproof covering structure is formed by mounting the C-shaped steel 3 on the upper and lower flanges 7a of the beam 7, as shown in FIG.
a and weld the ALC panel 2 on its surface 3b and side surface 3c.
Is screwed with a wood screw 4. For this reason, problems such as a decrease in workability and damage to the ALC panel as in the case of the above-described prisms also occurred.

[0007]

SUMMARY OF THE INVENTION Accordingly, the present invention provides good workability, reduces the outer dimensions, and reduces the effective area of a building when a fireproof panel is formed by attaching a fireproof panel to a steel frame of a building. A fire-resistant coating structure of a steel frame that can be made large, effectively prevent the thermal effects of fire, etc. from reaching the steel frame, and have excellent durability over a long period of time;
It is an object of the present invention to provide a mounting bracket for a fireproof panel for covering used in this structure.

[0008]

In order to achieve the above object, a first embodiment of a fire-resistant coating structure for a steel frame according to the present invention comprises a fire-resistant panel attached to at least two outer surfaces of a steel prism. In the fire-resistant coating structure of a steel prism, the mounting bracket having a substantially L-shape as a whole and having a substantially Ω-shaped cross section is provided so as to straddle and abut on two outer surfaces of the corners of the steel prism. It is attached to a corner of a prism, and a frame fireproof panel is screwed to the surface of the mounting bracket at a minute distance from the outer surface of the steel prism.

A second embodiment of the fire-resistant coating structure for a steel frame according to the present invention is characterized in that at least one flange of a column or a beam of an H-shaped steel is sandwiched between the surfaces of a generally L-shaped mounting bracket. The fireproof panel is screwed at a small interval.

Further, a third embodiment of the fire-resistant coating structure for a steel frame according to the present invention has a substantially rectangular parallelepiped shape as a whole so as to contact the outer surface of the steel prism, and has a substantially Ω-shaped or U-shaped cross section. A mounting bracket is attached to at least two outer surfaces of the steel prism, and a plurality of refractory panels are arranged in parallel in the width direction on the surface of the mounting bracket at a small distance from the outer surface of the steel prism. It is characterized by becoming.

Further, in a fourth embodiment of the fire-resistant coating structure for a steel frame according to the present invention, the entire structure is formed substantially in an L-shape so as to straddle and abut on two outer surfaces of the corners of the steel prism. A first mounting bracket having a substantially Ω-shaped cross section is attached to a corner of the steel prism, and an outer surface of the steel prism is provided at an intermediate position of the first mounting bracket at substantially the same horizontal level as the mounting bracket. A second mounting bracket, which is formed in a substantially rectangular parallelepiped shape as a whole so as to abut against and is substantially Ω-shaped or U-shaped in cross section, is attached to the outer surface of the steel prism, and the first and second mounting brackets are mounted. It is characterized in that a plurality of refractory panels are screwed in parallel in the width direction at a slight distance from the outer surface of the steel prism on the surface.
In the third and fourth embodiments of the fire-resistant coating structure of the steel frame, the mounting brackets attached to the outer surface of the steel prism are connected to each other by an iron wire. .

Further, a fifth embodiment of the fire-resistant coating structure for a steel frame according to the present invention is a mounting bracket formed substantially in an L-shape as a whole so as to straddle the long side small face and the inner surface of the fire-resistant panel. One side of the fireproof panel is in contact with the long side edge of the fireproof panel, and a pointed head provided at a right angle to the tip of the other side is driven into the backside of the fireproof panel and fixed. A fire-resistant panel adjacent to and facing the surface is screwed with a small distance from the outer surface of the steel prism.

On the other hand, the first embodiment of the mounting bracket for the refractory panel for covering according to the present invention has a substantially L-shape as a whole corresponding to the corner of the steel prism so that the refractory panel can be screwed at right angles. A cross section having a vertical portion at the upper and lower ends of the vertical surface and a vertical portion capable of contacting the outer surface of the corner of the steel prism.
It is characterized by comprising a main body in which a U-shaped or U-shaped leg is formed, or a gap capable of holding a flange of an H-shaped steel column or beam in the leg,
Alternatively, the leg is provided with a hook-shaped projection capable of supporting a heat insulating material.

In a second embodiment of the present invention, there is provided a mounting bracket for a refractory panel for covering, which is formed in a substantially rectangular parallelepiped shape as a whole corresponding to the outer surface of a steel prism so that an orthogonal refractory panel can be screwed. And a main body having, at the upper and lower ends of a vertical surface, a leg having a flat end surface of a horizontal portion or a leg having a substantially L-shaped cross section having a vertical portion capable of abutting on the outer surface of the steel prism. The main body is connected to each other by an iron wire.

Further, in a third embodiment of the present invention, there is provided a fitting for mounting a refractory panel for covering according to the present invention, which is formed substantially in an L-shape as a whole so as to straddle a long side small face and an inner surface of the refractory panel. Surface is in contact with the long side edge surface of the fireproof panel so that it can be screwed from the adjacent fireproof panel, and the other surface has a pointed head at a right angle at the tip end for driving and fixing the rear surface of the fireproof panel. It is characterized by the following.

[0016] It is preferable that the mounting bracket for the refractory panel has a thickness of 1.2 mm to 1.5 mm.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a fire-resistant coating structure for a steel frame according to the present invention has a substantially L-shape as a whole corresponding to the corners of a steel prism and has upper and lower ends in a vertical plane. The mounting bracket composed of a main body having a substantially L-shaped or U-shaped leg having a vertical portion capable of abutting on the outer surface of the corner of the steel prism is attached to the corner of the steel prism. The fireproof panel is screwed to the surface of the mounting bracket, and the fireproof panel is attached at a small distance from the outer surface of the steel prism.

In a second embodiment of the fire-resistant coating structure for a steel frame according to the present invention, there is provided a gap which is formed substantially in an L-shape as a whole and has a leg portion capable of holding a flange of an H-shaped steel column or beam. The refractory panel is screwed to the surface of the mounting bracket provided with the above, and the refractory panel is attached at a small distance from the flange. In these embodiments, one ALC panel is used in the width direction of the outer surface of each of the steel prism and the flange of the H-shaped steel, and the outer dimensions are about 5 mm.
It is applied to prisms of less than 00 mm or H-shaped steel.

On the other hand, in the third embodiment of the fire-resistant coating structure of the steel frame according to the present invention, the whole fire-resistant panel is formed into a substantially rectangular parallelepiped shape corresponding to the outer surface of the steel prism so that the orthogonal fire-resistant panel can be screwed. A body having a flat end surface of a horizontal portion or a substantially L-shaped cross section having a vertical portion formed at upper and lower ends of a vertical surface and capable of contacting the outer surface of the steel prism. A plurality of refractory panels are mounted in parallel in the width direction on the surface of the mounting bracket composed of screws, and the refractory panels are attached with a small distance from the outer surface of the steel prism, and according to the present invention. A fourth embodiment of the fire-resistant coating structure for a steel frame according to the present invention is characterized in that it is formed substantially in an L-shape as a whole corresponding to the corners of the steel frame prism, and the outer surfaces of the corners of the steel frame prism are formed at upper and lower ends of a vertical plane. Cross section with a vertical portion that can contact As a whole, a surface of a first mounting bracket constituted by a main body having an L-shaped or a U-shaped leg formed thereon and an outer surface of a steel prism so that the orthogonal fireproof panel can be screwed. Legs having a substantially rectangular parallelepiped shape and having a flat end surface of a horizontal portion or a substantially L-shaped cross section having a vertical portion are formed at upper and lower ends of a vertical surface. A plurality of refractory panels are arranged in parallel in the width direction on the surface of the second mounting bracket composed of the main body and the surface of the first and second mounting brackets and screwed to the outside of the steel prism. A fireproof panel is attached with a small distance from the surface.

Further, a fifth embodiment of the fire-resistant coating structure for a steel frame according to the present invention is a mounting bracket formed substantially in an L-shape as a whole so as to straddle the long side of the fire-resistant panel and the inner surface. In a state where one surface is in contact with the long side edge of the fire-resistant panel, a pointed head provided at a right angle to the tip of the other surface is driven into the rear surface of the fire-resistant panel, so that the mounting bracket is fireproof. A fireproof panel is fixed to a panel, and a fireproof panel adjacent to one surface of the mounting bracket is screwed to the mounting bracket, and the fireproof panel is attached at a small distance from the outer surface of the steel prism. .

[0021] In these embodiments, it is possible to cope with prisms and H-shaped steel having an outer dimension of about 500 mm or more. As described above, in the fireproof covering structure according to the present invention, it is not necessary to weld the mounting bracket to the steel prism or the H-shaped steel, and the fireproof panel is easily attached to the steel frame at a small distance from the steel frame in a short time. A fireproof coating can be applied to the skeleton.

Also, since a minute gap is provided between the outer surface of the steel prism or the flange surface of the H-section steel and the surface of the refractory panel, it is possible to pass a screw through the surface of the mounting bracket to fix the refractory panel with the screw. it can. In addition, the above-mentioned minute interval also serves as a heat insulating layer for preventing a steel frame such as a prism or a beam from being deformed due to thermal expansion when heated by a flame, thereby preventing a fire-resistant panel from being deformed or falling off. I do. At this time, the dimension of the minute gap is 1.0 mm or more (calculated from the dimension of the steel frame and the maximum surface temperature at the time of the flame) which is the thermal expansion amount of the steel frame by the flame (about 300 ° C. to 350 ° C.). And the thickness of the mounting bracket used in connection with the minute gap is 1.2 m.
It is preferable to adopt about m to 1.5 mm. The reason for setting the thickness of the mounting bracket to about 1.2 mm to 1.5 mm is that if the thickness is less than 1.2 mm, the screw fastening strength of the fireproof panel cannot be obtained, and a minute gap is formed due to the thickness of the mounting bracket. In the structure to be formed, the gap becomes too small, the heat insulation effect is not sufficiently exhibited, and the possibility of damaging the fireproof panel is high. On the other hand, if the thickness exceeds 1.5 mm, the entire outer peripheral dimension becomes large due to the mounting bracket. In the structure in which the effective area of the building is not small, and in the configuration in which the minute gap is formed by the thickness of the mounting bracket, not only there is not much difference in the heat insulating effect, but the mounting bracket is unnecessarily heavy and uneconomical. It is. Further, since the minute spacing can be reduced as described above as compared with the conventional C-type steel generally used, the outer shape of the prisms and beams of the fire-resistant coated steel frame is reduced, and the effective area of the building is increased. be able to.

In addition, these mounting brackets are not directly welded (fixed) to a steel frame such as a prism or a beam, but are bonded to the outer surface of a steel frame prism, clamp an H-shaped steel flange, or use a fireproof panel. It is attached by driving and fixing it to the fireproof panel, and it is only slightly in contact with the fireproof panel, so there is a difference in thermal expansion due to fire etc. between the fireproof panel and the steel frame, earthquake, etc. When the rocking is performed, a part of the mounting bracket, such as a leg, can slide on the steel frame, so that excessive stress does not act on the fireproof panel, and damage to the fireproof panel can be prevented. Further, if the mounting brackets are connected to each other by an iron wire or a spring instead of being bonded to the steel frame, a simplified mounting bracket can be used and the cost can be reduced.

When one outer surface of the steel prism faces the wall, the hook-shaped projection of the mounting bracket is provided with a hook-shaped projection capable of supporting a fire-resistant heat-insulating material on a leg portion. If a fire-resistant heat insulating material such as rock wool is inserted between the heat insulating material and the wall surface, the heat insulating material is fixed by the projections of the mounting bracket. It can be supported without doing.

The dimensions of each of the mounting brackets may be appropriately selected as necessary. However, since the tips of the screws penetrate the vertical surface when fixing the fire-resistant panel, the height of the legs is 1.
It is preferable that the distance is about 0 mm.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, FIG. 1 to FIG. 6 are perspective views showing respective embodiments of one embodiment of a mounting bracket for a fireproof panel for covering according to the present invention. FIG. 1 is a perspective view of a first embodiment of an embodiment of the mounting bracket according to the present invention, and FIG.
Is bent at a right angle so as to correspond to a corner portion of a steel prism or the like, and is formed substantially in an L-shape as a whole, and a right-angled vertical surface 11 for screwing a fireproof panel so as to be orthogonal to each other;
A body formed by integrally forming a leg portion 12 having a substantially L-shaped cross section having a vertical portion 12a formed at a desired height at upper and lower ends of the vertical surface with an iron plate having a thickness of 1.2 mm to 1.5 mm. 10 '. Accordingly, the mounting bracket 10 has a substantially Ω-shaped cross section, and is formed substantially in an L-shape as a whole such that the opening side of the Ω-shaped shape, that is, the vertical portion 12a side faces inward.

FIG. 2 is a perspective view of a second embodiment of the present invention. The mounting bracket 20 is also formed substantially in an L-shape as a whole, but the main body 20 'is different from that of the first embodiment. Unlike the first embodiment, the leg portions 22 provided at the upper and lower ends of the vertical surface 21 are formed of an integral iron plate having a substantially U-shaped cross section including a vertical portion 22a and a horizontal portion 22b. The strength of the legs 22 is improved and a thinner iron plate can be used as compared with the mounting bracket of FIG. 1, so that the weight and size can be further reduced.

FIG. 3 is a perspective view of a mounting bracket according to a third embodiment of the present invention. The mounting bracket 30 is also formed substantially in an L-shape as a whole, and the main body of the mounting bracket 20 of FIG. It comprises a body 30 'substantially similar to 20' but with the following different shapes. That is, the legs 32 provided at the upper and lower ends of the vertical surface 31 of the main body 30 'are formed in a substantially U-shaped cross section including a vertical portion 32a and a horizontal portion 32b. The portion is constituted by an integral iron plate provided with hook-shaped projections 33 that can be supported to prevent displacement of the refractory heat insulating material.

FIG. 4 is a perspective view of a mounting bracket according to a fourth embodiment of the present invention. The mounting bracket 40 is also formed substantially in an L-shape as a whole, and the main body of the mounting bracket 20 of FIG. It comprises a body 40 'substantially similar to 20' but with the following different shapes. That is, the legs 42 provided at the upper and lower ends of the vertical surface 41 of the main body 40 'are formed in a substantially U-shaped cross section including a vertical portion 42a and a horizontal portion 42b. Are bent in opposite directions so as to be flush with the horizontal portion 42b to form a pair of protrusions 43, and the H-shaped steel flange is formed by a gap 43a between the vertical portion 42a of the leg portion 42 and the protrusion 43. It is made of an integral iron plate that can be held.

FIG. 5 is a perspective view of a fitting according to a fifth embodiment of the present invention.
Reference numeral 0 also has a substantially L-shape as a whole and comprises a main body 50 'substantially similar to the main body 20' of the mounting bracket 20 in FIG. 2, but has the following different shapes. That is, the legs 52 provided at the upper and lower ends of the vertical surface 51 of the main body 50 'are formed in a substantially U-shaped cross section including the vertical portion 52a and the horizontal portion 52b. One end of the portion 52b is formed in a planar portion bent in the same direction as the vertical portion 52a, and a pair of protrusions 5 is formed.
3 and a gap 53 between the protrusion 53 and the vertical portion 52a.
It is composed of an integral iron plate capable of sandwiching a flange of H-shaped steel constituting a beam or a column at a. The projection 53 is formed so as to have a curved surface so that the flange of the H-shaped steel is elastically held and held.

FIG. 6 is a perspective view of a fitting according to a sixth embodiment of the present invention.
Reference numeral 0 is a modification of the main body 30 'of the mounting bracket 30 shown in FIG. That is, the main body 60 'of the metal fitting 60 has a vertical surface 61 substantially similar to FIG.
The legs 62 provided at the upper and lower ends are formed in a substantially U-shaped cross section including a vertical portion 62a and a horizontal portion 62b.
One end of the horizontal portion 62b of the leg portion 62 is bent in the opposite direction so as to be flush with the horizontal portion 62b as in FIG. 4, so that the H-shaped steel flange can be sandwiched therebetween. A notch 62c is formed, and a hook-like projection 6 which can be supported at one end of one vertical surface 61 so as to prevent displacement of a refractory heat insulating material such as rock wool.
3 is made of an integrated iron plate.

Next, each embodiment of one embodiment of the fire-resistant coating structure of the steel frame constituted by using the mounting bracket made of an iron plate and having a thickness of 1.2 mm to 1.5 mm shown in FIGS. 7 to FIG. First, FIG. 7A is a cross-sectional view showing a first embodiment in which a prismatic fire-resistant coating structure is formed using the mounting bracket 20 shown in FIG. 2, and FIG. 7B is a sectional view of FIG. (B) It is an arrow view. When the fireproof covering structure shown in FIG. 7 is configured, the vertical portion 2 of the leg 22 of the mounting bracket 20 having a substantially Ω-shaped cross section shown in FIG.
A double-sided adhesive tape is stuck on 2a, and the metal fittings 20 are stuck on two outer surfaces of each corner of the steel prism 1 at desired intervals in the vertical direction. Thereafter, the ALC panel 2 as a fireproof panel, which has been cut into a desired width in advance and has a seam joint formed on the surface edge, is screwed to the vertical surface 21 of the mounting bracket 20 with a wood screw 4. Then, the ALC panel 2 is separated from the outer surfaces of the four sides of each prism 1 by a small interval c (that is, the width of the leg 22).
Then, the joint portion of the adjacent ALC panel 2 is filled with the caulking material 9 to complete the fireproof coating structure.

Next, FIG. 8 is a cross-sectional view showing another embodiment of the fire-resistant coating structure, showing a case where one outer surface of the steel frame prism 1 faces the inner surface of the wall 5. In the case of constructing a fire-resistant coating structure, the vertical portions of the leg portions 32 of the mounting bracket 30 having a substantially Ω-shaped cross section as shown in FIG. 3 are provided at two corners of the prism 1 facing the inner surface of the wall 5. 32a is adhered with double-sided adhesive tape or the like, and the leg 2 of the mounting bracket 20 of FIG.
The second vertical portion 22a is attached with a double-sided adhesive tape or the like. Next, after screwing the ALC panel 2a to the mounting bracket 20 attached to the outer surface of the prism 1 parallel to the inner surface of the wall 5,
A fire-resistant heat insulating material 6 such as rock wool is inserted between the mounting bracket 30 and the inner surface of the wall 5.
A hook-shaped protrusion 33 provided at one end of the zero vertical surface 31 prevents the displacement of the fire-resistant heat insulating material 6 such as rock wool. Then, the ALC panel 2 orthogonal to the inner surface of the wall 5 is attached to the prism 1 and the vertical surfaces 3 of the mounting brackets 30 and 20 attached to the prism 1.
If the joints of the ALC panels 2 and 2a are filled with the caulking material 9, the ALCs are spaced from the outer surfaces of the three sides of the prism 1 by a small distance c (that is, the thickness of the leg 32).
The fire-resistant coating structure by the panels 2 and 2a is completed.

FIG. 9 is a longitudinal sectional view showing an example of a fire-resistant coating structure of an H-shaped steel beam. In the case of constructing such a refractory coating structure, the vertical portion 52a of the leg 52 of the mounting bracket 50 having a substantially Ω-shaped cross section shown in FIG.
The lower flange 7a of the H-beam 7 is sandwiched by a gap 53a between the projection 53 and the projection 53 bent in the same direction, while the vertical surface 21 of the mounting bracket 20 shown in FIG.
And stick it. Thereafter, the ALC panel 2 may be screwed to the vertical surfaces 51, 21 of the mounting brackets 50, 20 in the same manner as in the previous example, and joint finishing may be performed. With this configuration, it is possible to attach the ALC panel 2 to the H-beam 7 at a small distance c (that is, the thickness of the leg 52) from the outer surface of the lower flange 7a of the beam 7 and both end surfaces thereof. it can.

FIG. 10 is a cross-sectional view of the fire-resistant coating structure in the case where one surface of the H-beam 7 faces the inner surface of the wall 5. When constructing such a fireproof coating structure,
The upper flange 7b of the beam 7 facing the inner surface of the wall 5 is clamped by the cut 62c of the leg 62 of the mounting bracket 60 having a substantially Ω-shaped cross section shown in FIG. 6, and the other lower flange 7a is shown in FIG. It is clamped by the gap 43a of the mounting bracket 40. Next, after the ALC panel 2a is screwed to the mounting bracket 40 sandwiched between the lower flanges 7a parallel to the inner surface of the wall 5, a fire-resistant heat insulating material such as rock wool is provided between the mounting bracket 60 and the inner surface of the wall 5. Insert 6.

Thereafter, the ALC panel 2 perpendicular to the inner surface of the wall 5 is screwed to the vertical surfaces 61 and 41 of the mounting brackets 60 and 40, and the caulking material 9 is attached to the joints of the ALC panels 2 and 2a.
Is completed, and the ALC panel 2 can be attached to the beam 7 with a small distance c (that is, the thickness of the leg 62) from both end surfaces of the lower flange 7a and the upper and lower flanges 7a, 7b of the beam 7. it can. The thickness and dimensions of each of the mounting brackets and the ALC panel can be appropriately selected according to the structure of the steel frame and the fireproof specification. In the case where the length of the ALC panel exceeds 4 m or extends over two or more steps, In this method, a self-weight receiving bracket is fixed to a beam or a prism to support the lower end face of the ALC panel, and a filler joint is filled with a fire-resistant heat insulating material.

Next, FIGS. 11 to 13 are views showing examples of other embodiments of the mounting bracket for the refractory panel for covering according to the present invention. FIG. 11 is a perspective view showing a first embodiment of another embodiment of the mounting bracket according to the present invention. The mounting bracket 70 is formed in a substantially rectangular parallelepiped shape as a whole so as to correspond to the outer surface of the steel prism. And a vertical surface 71 for screwing the refractory panel so as to be orthogonal to each other, and a vertical portion 72 formed at the upper and lower ends of the vertical surface with a desired height.
a with a substantially L-shaped leg 72 having a thickness of 1.2 m
It is composed of a main body 70 'integrally formed of an iron plate of m to 1.5 mm, and has a substantially Ω-shaped cross section. The height of the leg 72 is 10 m.
m and length are 100 mm.

FIG. 12 is a view showing a mounting bracket of a second embodiment according to another embodiment of the present invention. FIG. 12 (A) is a perspective view of the mounting bracket, and FIG. 12 (B) is a sectional view thereof. . FIG.
The shape of the main body 80 'of the mounting bracket 80 is substantially the same as that of the main body 70' of the mounting bracket 70 of FIG. 11, but the length of each of the prisms 1 to which the ALC panel 2 is attached is set. It is almost the same as the width of the outer surface. At both ends of the legs 82 of the main body 80 ', through holes 82 are formed respectively.
b is perforated, and the iron wire 8 inserted through the through hole 82b
3, the mounting brackets 80 are formed by mutually connecting the main bodies 80 'adjacent to each other in the right angle direction.

FIG. 13 is a view showing a mounting bracket of a third embodiment according to another embodiment of the present invention. FIG. 13 (A) is a perspective view of the mounting bracket, and FIG. 13 (B) is a sectional view thereof. . FIG.
The main body 90 'of the third mounting bracket 90 has a horizontal surface leg 92 having a desired height formed at the upper and lower ends of a vertical surface 91 for screwing the ALC panel 2, and has a generally U-shaped cross section as a whole. 12, the flat free end surface of the horizontal leg portion 92 is in contact with the outer surface of the prism, and through-holes 92b are formed at both ends of the leg portion 92, as in FIG. The mounting members 90 are formed by mutually connecting the main bodies 90 'that are adjacent to each other in the right-angle direction with the iron wires 83 inserted through the through holes 92b. These mounting brackets 70, 80, 90 can also be used in combination with the mounting brackets of FIGS.

Next, FIG. 14 shows an 800 cm prism 1 using the mounting bracket 10 of FIG. 1 and the mounting bracket 70 of FIG.
It is a longitudinal cross-sectional view which shows the example which comprised the refractory coating structure on the outer surface of four sides. When the fireproof covering structure of FIG. 14 is constructed, the vertical portion 1 of the leg 12 of the mounting bracket 10 of FIG.
2a and the vertical portion 72a of the leg 72 of the mounting bracket 70, a double-sided adhesive tape is stuck, and the mounting bracket 10 is
Are attached at desired intervals in the vertical direction over two outer surfaces of the respective corners, and an attachment 70 is attached at an intermediate position of the attachment 10 at substantially the same horizontal level as the attachment 10. .

Thereafter, the two ALC panels 2 each having a thickness of 37 mm, which have been cut into a width of 500 mm in advance and whose side edges are subjected to horizontal jointing, are attached to the vertical surfaces 11 and 71 of the mounting brackets 10 and 70. Screw each with a wood screw 4. Then, after the outer surfaces of the four sides of the prism 1 are covered with the ALC panel 2 at a small interval c (that is, the width of the leg portion 42), the joint portion of the adjacent ALC panel 2 is filled with the caulking material 9 to complete the process.

Further, FIG. 15 is a view showing an example in which a fireproof coating structure is formed on the four outer surfaces of the prism 1 using the mounting bracket 80 of FIG. 12, (A) is a transverse sectional view, and (B) is a view. Is a partial longitudinal sectional view. When the fireproof covering structure shown in FIGS. 15A and 15B is constructed, the mounting bracket 8 shown in FIG.
A double-sided adhesive tape is stuck to the vertical portion 82a of the leg 82, and an iron wire 83 is inserted through the through-holes 82b at both ends of the leg 82 to tighten the four main bodies 80 '. To form the mounting bracket 80. It is to be noted that either the mounting bracket 80 is bonded or connected with an iron wire, and either one can be mounted on the prism 1. After attaching the mounting bracket 80, the ALC panel 2 may be screwed in the same manner as in the previous example, and the same structure can be obtained by using the mounting bracket 90 in FIG. 13. In this case, a double-sided adhesive tape is used. Since the main body 90 'cannot be used, the main body 90' is connected to each other by an iron wire 83 to form a mounting bracket 90, and is fixed to the outer surfaces of the four sides of the prism 1 at a small distance c (that is, the width of the leg 82).

FIGS. 16 and 17 are longitudinal sectional views showing other examples of the fire-resistant coating structure of the present invention.
Each of the three outer surfaces and the two outer surfaces of the prism 1 has a minute interval c (that is, the width of the leg 82), and the outer surface of FIG.
And two or three ALCs in the same manner as in (B)
The panel 2 is coated with a fire-resistant material and filled with a fire-resistant heat insulating material such as rock wool 6 between itself and the inner surface of the wall 5.

FIGS. 18 to 20 are views for explaining still another embodiment of a fire-resistant coating structure and a mounting bracket for a steel frame according to the present invention. FIG. 18 is a plan view showing a state in which ALC panels are attached to the outer surfaces of the four sides of the steel prism to form a fire-resistant coating structure, FIG. 19 is an enlarged view of a portion A in FIG. 18, and FIG. It is a perspective view which shows the mounting bracket used for a covering structure. This mounting bracket 100
As shown in FIG. 20, a steel plate having a thickness of 1.2 mm to 1.5 mm is plated at a right angle and integrally formed in a substantially L-shape as a whole, as shown in FIG. The other surface 102 is a plane, and both ends of the plane are bent in a direction perpendicular to the one surface 101 in parallel with the one surface 101 to provide a pointed head 103.

To attach the ALC panel 2 to all four outer surfaces of the steel prism 1 using the mounting bracket 100 to form a fireproof coating structure, first, the long sides of the two opposite ALC panels 2a are used. The mounting bracket 100 is fixed to the fore-edge surface at a desired interval. At this time, the tip 103 is arranged so that one surface 101 of the mounting bracket 100 is in contact with the long side edge of the ALC panel 2a, and the other surface 102 is in contact with the back surface of the ALC panel 2a. Driving on the back of the ALC panel. At that time, an adhesive may be applied to the inner surface side of the mounting bracket 100, or an adhesive tape may be used.
Next, a refractory adhesive 105 is applied to the entire surface of the long edge on both sides of the ALC panel 2a.
The other surface 102 of the mounting bracket 100 on the back surface of the ALC panel 2a is abutted against the surface of the prism 1 and is erected.
The mounting bracket 10 has a back surface on one end side of the ALC panel 2b adjacent to the ALC panel 2b on the long side of the ALC panel 2a.
0 is screwed to the mounting bracket 100 of the ACL panel 2a from the surface of the ALC panel 2b with a tapping screw 104 from the surface of the ALC panel 2b to cover the two outer surfaces of the prism 1 in an L shape.

Thereafter, A adjacent to the ALC panel 2a
When the LC panel 2b is erected and screwed from the surface of the ALC panel 2b to the mounting bracket 100 of the ALC panel 2a with a tapping screw 104, the three outer surfaces of the prism 1 are covered in a U-shape. Further, when the ALC panel 2b is set up against the ALC panel 2a and screwed from this surface to the mounting bracket 100 of the ALC panel 2a with a tapping screw 104, a fireproof coating structure is formed on all four outer surfaces of the prism 1. At this time, the other surface 102 of the mounting bracket 100 is provided between the inner surfaces of the ALC panels 2a and 2b and the outer surface of the prism 1.
A minute interval c corresponding to the thickness (1.2 to 1.5 mm) is provided. Then ALC panels 2a, 2b
After applying the same fire-resistant adhesive as described above to the upper front end face, ALC panels are sequentially stacked and attached as described above to form a fire-resistant coating structure over the entire steel prism.

Finally, a repair material is filled in the screw hole 102a of the tapping screw 104, and a gap between the ALC panel and the floor and between the ALC panel and the ceiling is filled with a refractory material.
Further, a sealing material is filled in the sealing groove 101a at the corner as needed. Further, the surface of the ALC panels 2a and 2b is completed by performing finishing processing such as painting or attaching a finishing material. Further, in this example, the method of forming a fireproof coating on a prism is described. However, a fireproof coating can be similarly formed on the entire outer surface of a column or a beam such as an H-section steel.

In the embodiment shown in FIGS. 18 to 20, it is not necessary to attach a mounting bracket to the steel frame with an adhesive or an adhesive tape, and the fire-resistant coating structure of the fire-resistant panel moves largely displaced from the steel frame by an earthquake or the like. The dimensions of the ALC panels 2a, 2b, the mounting bracket 100, and the like to be used can be appropriately selected as needed.

[0049]

As described in detail above, the fire-resistant coating structure of the steel frame according to the present invention is formed substantially in an L-shape as a whole corresponding to the corners of the steel prism, and has upper and lower ends of a vertical plane. A mounting bracket composed of a main body having a substantially L-shaped or U-shaped cross section having a vertical portion capable of contacting the outer surface of the corner of the steel prism is attached to the corner of the steel prism. A fireproof panel is screwed on the surface of the mounting bracket, and is formed substantially in an L-shape as a whole, and has a gap in its legs capable of holding a flange of an H-section steel column or beam. Since the fireproof panel is screwed to the surface of the provided mounting bracket, one ALC panel is used in the width direction of each outer surface of the steel prism, and the outer dimensions are about 50 mm.
It can be applied to prisms of 0 mm or less and H-shaped steel.

Further, the fire-resistant coating structure of the steel frame according to the present invention is formed in a substantially rectangular parallelepiped shape as a whole corresponding to the outer surface of the steel prism so that the orthogonal fire-resistant panel can be screwed, and the upper and lower ends of the vertical surface are formed. A surface of the mounting bracket, the main body having a leg having a horizontal flat end face or a leg having a substantially L-shaped cross section having a vertical portion capable of contacting the outer surface of the steel prism. A plurality of refractory panels are screwed in parallel in the width direction, and are formed substantially in an L-shape as a whole corresponding to the corners of the steel prism. A surface of a first mounting bracket formed of a main body having a substantially L-shaped or U-shaped cross section having a vertical portion capable of abutting an outer surface of a corner portion of the first mounting member; Steel frame angle so that panel can be screwed Has a leg or a vertical portion which has a flat end surface of a horizontal portion which can be in contact with the outer surface of the steel prism at upper and lower ends of the vertical surface. A plurality of refractory panels are arranged in a width direction on a surface of a second mounting bracket composed of a main body having a leg portion having a substantially L-shaped cross section and on a surface of the first and second mounting brackets. And screwed, so that the outer dimensions of the prism or H
The steel frame can be applied to a steel frame, and it is not necessary to weld a mounting bracket to a steel prism or an H-beam, and a fireproof coating can be easily applied to a steel frame in a short time.

Further, in the fire-resistant coating structure for a steel frame according to the present invention, the one side of the mounting bracket, which is formed substantially in an L-shape as a whole so as to straddle the long side small face and the inner surface of the fire-resistant panel, is provided. In the state that it is in contact with the long edge of the fireproof panel,
A pointed head provided at a right angle to the tip of the other surface is driven into the rear surface of the fire-resistant panel and fixed, and the fire-resistant panel adjacent to the one surface is closely spaced from the outer surface of the steel prism. Since it is made by screwing, it is not necessary to weld it to the steel frame, and the fireproof coating can be easily and quickly formed on the steel frame.

As described above, according to the fire-resistant coating structure of the present invention, since a minute space is provided between the outer surface of the prism or the flange surface of the H-shaped steel and the surface of the fire-resistant panel, screws are provided on the surface of the mounting bracket. The fireproof panel can be screwed by being penetrated, and the minute gap acts as a heat insulating layer, thereby preventing deformation of the steel frame due to the flame and preventing damage due to deformation and falling off of the fireproof panel, thereby improving fireproof performance. Further, since the minute spacing can be reduced as compared with the conventional C-type steel generally used, the outer shape of the columns and beams of the fire-resistant coated steel frame is reduced, and the effective area of the building can be increased. .

In addition, the metal fittings used for the fire-resistant covering structure of these steel frames are not welded to the prisms or beams, but are adhered to the outer surfaces of the steel prisms, clamp the H-shaped steel flanges, or use fire-resistant panels. It is attached by driving and fixing it, so if there is a difference in thermal expansion between the fireproof panel and the steel frame, or if it swings due to an earthquake, a part of the mounting bracket can slide on the steel frame Therefore, excessive stress does not act on the fireproof panel, damage to the fireproof panel can be prevented, and the fireproof panel can be manufactured at low cost. Further, if the mounting brackets are connected to each other by an iron wire or a spring instead of being bonded to the steel frame, a simplified mounting bracket can be used and the cost can be reduced.

When one of the outer surfaces of the steel prism faces the wall, the hook-shaped projection of the mounting bracket is provided with a hook-shaped projection capable of supporting a fire-resistant heat-insulating material on a leg portion. If a fire-resistant heat insulating material such as rock wool is inserted between the heat insulating material and the wall surface, the heat insulating material is fixed by the projections of the mounting bracket. It can be supported without doing.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of one embodiment of a mounting bracket for a refractory panel for covering according to the present invention.

FIG. 2 is a perspective view of a second embodiment of one embodiment of the mounting bracket for the refractory panel for covering according to the present invention.

FIG. 3 is a perspective view of a third embodiment of one embodiment of the mounting bracket for the refractory panel for covering according to the present invention.

FIG. 4 is a perspective view of a fourth embodiment of one embodiment of the mounting bracket for the fire-resistant panel for covering according to the present invention.

FIG. 5 is a perspective view of a fifth embodiment of one embodiment of the mounting bracket for the refractory panel for covering according to the present invention.

FIG. 6 is a perspective view of a sixth embodiment of one embodiment of the mounting bracket for the refractory panel for covering according to the present invention.

FIGS. 7A and 7B are views for explaining a first embodiment of a fireproof coating structure according to the present invention, wherein FIG. 7A is a cross-sectional view of the fireproof coating structure, and FIG. (B) It is an arrow view.

FIG. 8 is a cross-sectional view of the fire-resistant coating structure when one surface of the prism according to the present invention faces the inner surface of the wall.

FIG. 9 is a longitudinal sectional view showing an example of a fire-resistant coating structure of an H-section steel beam according to the present invention.

FIG. 10 is a cross-sectional view of the fire-resistant coating structure when one surface of the column of the H-section steel according to the present invention faces the inner surface of the wall.

FIG. 11 is a perspective view showing a first embodiment of another embodiment of the mounting bracket according to the present invention.

FIG. 12 is a view showing a mounting bracket of a second embodiment according to another embodiment of the present invention, wherein (A) is a perspective view of the mounting bracket and (B) is a cross-sectional view thereof.

FIG. 13 is a view showing a mounting bracket of a third embodiment according to another embodiment of the present invention, wherein (A) is a perspective view of the mounting bracket and (B) is a cross-sectional view thereof.

FIG. 14 is a longitudinal sectional view showing an example in which a fire-resistant coating structure is formed on four outer surfaces of a steel prism using the mounting bracket of FIG. 1 and the mounting bracket of FIG. 11;

15A and 15B are diagrams showing an example in which a fire-resistant coating structure is formed on four outer surfaces of a steel prism using the mounting bracket of FIG. 12, wherein FIG. 15A is a cross-sectional view, and FIG. FIG.

FIG. 16 is a longitudinal sectional view showing another example of the fire-resistant coating structure of the present invention.

FIG. 17 is a longitudinal sectional view showing still another example of the fireproof covering structure according to the present invention.

FIG. 18 is a plan view showing a state in which an ALC panel is attached to four outer surfaces of a steel prism to form a fireproof coating structure.

19 is an enlarged view of a portion A in FIG.

FIG. 20 is a perspective view of a mounting bracket used in the fire-resistant coating structure of the present invention.

FIG. 21 is a view showing a conventional column fireproof coating structure, and FIG.
Is a transverse sectional view, and (B) is a partial longitudinal sectional view.

FIG. 22 is a cross-sectional view showing another fire-resistant coating structure of a conventional column.

FIG. 23 is a cross-sectional view showing a conventional fireproof covering structure of a beam.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Prismatic prism 2, 2a, 2b ALC panel 3 C-shaped steel 4 Wood screw 5 Wall 6 Fireproof heat insulating material 7 Beam 7a Lower flange 7b Upper flange 9 Caulking material 10, 20, 30, 40, 50, 60, 70, 80, 9
0, 100 Mounting brackets 10 ', 20', 30 ', 40', 50 ', 60', 7
0 ', 80', 90 'main body 11, 21, 31, 41, 51, 61, 71 vertical surface 12, 22, 32, 42, 52, 62, 72, 82, 9
2 legs 12a, 22a, 32a, 42a, 52a, 62a, 7
2a Vertical portion 22b, 32b, 42b, 52b, 62b Horizontal portion 33, 43, 53, 63 Projection 43a, 53a Gap 62c Cut 82b, 92b Through hole 83 Iron wire 101, 102 surface 103 Pointed head 105 Fireproof adhesive c Micro-space

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Atsushi Kobayashi 1-10-1 Higashiikebukuro, Toshima-ku, Tokyo Sumitomo Siporex Corporation (72) Inventor Takashi Taguchi 1-10-1 Higashiikebukuro, Toshima-ku, Tokyo Residence Miner Shipo Rex Co., Ltd. (72) Inventor Tadashi Shibata 1-10-1 Higashi-Ikebukuro, Toshima-ku, Tokyo Sumitomo Shipo Rex Co., Ltd. F-term (reference) 2E001 DE01 EA04 FA01 FA02 FA03 FA09 GA12 GA52 GA53 HA04 HA32 HB01 LA04 LA05 LA11 LA12

Claims (13)

[Claims] In a fire-resistant coating structure of a steel prism in which a fireproof panel is attached to at least two outer surfaces of a steel prism, the steel prism straddles two outer surfaces of a corner of the steel prism. Attach a mounting bracket having a substantially L-shape as a whole and a substantially Ω-shaped cross section to the corner of the steel prism,
A fire-resistant coating structure for a steel frame, wherein a fire-resistant panel is screwed to the surface of the mounting bracket at a small distance from the outer surface of the steel prism. 2. A fire-resistant panel is screwed on a surface of a generally L-shaped mounting bracket sandwiching at least one flange of an H-shaped steel column or beam with a small distance from the flange. Fire-resistant coating structure of steel frame. 3. A mounting member having a substantially rectangular parallelepiped shape as a whole so as to abut against an outer surface of the steel prism and having a substantially Ω-shaped or U-shaped cross section is attached to at least two outer surfaces of the steel prism. A plurality of refractory panels arranged in parallel with each other in the width direction at a minute distance from the outer surface of the steel prism on the surface of the mounting bracket; 4. A first mounting bracket having a substantially L-shape as a whole and having a substantially Ω-shaped cross section is provided so as to straddle and abut on two outer surfaces of a corner portion of the steel prism. A substantially rectangular parallelepiped, which is attached to a corner portion, and which is located at an intermediate position of the first mounting bracket and abuts on the outer surface of the steel prism at substantially the same horizontal level as the first mounting bracket; A second mounting bracket having a substantially Ω shape or a U shape is attached to the outer surface of the steel prism, and
And a plurality of refractory panels in parallel with each other in the width direction at a minute distance from the outer surface of the steel prism on the surface of the second mounting bracket. 5. The apparatus according to claim 3, wherein the second mounting members are connected to each other by an iron wire.
Or the fire-resistant coating structure of a steel frame according to 4. 6. One side of a mounting bracket formed substantially in an L-shape as a whole so as to straddle the long side small face and the inner surface of the fireproof panel and abut the long side small face of the fireproof panel. In this state, a pointed head provided at a right angle to the tip of the other surface is driven into and fixed to the back surface of the fireproof panel, and the fireproof panel opposed to the one surface is opposed to the outer surface of the steel prism. A fire-resistant coating structure of a steel frame, which is screwed at minute intervals. 7. A substantially rectangular shape is formed as a whole corresponding to the corner of the steel prism so that the orthogonal fireproof panel can be screwed, and the outer surface of the corner of the steel prism is formed at the upper and lower ends of the vertical plane. A mounting bracket for a fireproof panel for covering, comprising a main body having a substantially L-shaped or U-shaped cross section having a vertical portion that can be abutted. 8. The mounting bracket for a fireproof panel for covering according to claim 6, wherein a gap is provided in said leg portion so as to hold a flange of a column or beam of H-section steel. 9. The mounting bracket for a fireproof panel for covering according to claim 7, wherein a hook-shaped projection capable of supporting a heat insulating material is provided on the leg portion. 10. A generally rectangular parallelepiped shape corresponding to the outer surface of the steel prism so as to screw an orthogonal fireproof panel with screws, and can contact the outer surface of the steel prism at upper and lower ends of a vertical surface. A mounting bracket for a refractory panel for covering, comprising: a main body having a leg portion having a flat end surface of a horizontal portion or a leg portion having a substantially L-shaped cross section having a vertical portion. 11. The mounting bracket for a fireproof panel for covering according to claim 10, wherein said main bodies are connected to each other by an iron wire. 12. The fire-resistant panel is formed substantially in an L-shape as a whole so as to straddle the long-side face and the inner surface of the fire-resistant panel, and has one side of the fire-resistant panel so that one surface can be screwed from an adjacent fire-resistant panel. A mounting bracket for a coating fire-resistant panel, characterized in that the mounting surface of the fire-resistant panel has a point perpendicular to the front end thereof for abutting against the surface and driving the other surface into the rear surface of the fire-resistant panel. 13. The mounting bracket for a refractory panel for coating according to claim 7, wherein the thickness thereof is 1.2 mm to 1.5 mm.