JP6755271B2 - Fireproof coating structure, fireproof material and fireproof coating method for pipe insertion parts in steel beams - Google Patents

Description

The present invention relates to a refractory coating structure , a refractory material, and a refractory coating method for a pipe insertion portion in a steel beam made of H-shaped steel or the like.

In a fireproof building with a steel structure, the main structural materials are subjected to fireproof coating treatment in order to prevent the strength of the structural materials from decreasing due to the temperature rise during a fire. For example, in a steel beam made of H-shaped steel, a fireproof coating material (rock wool, etc.) is wrapped along the upper and lower flanges and the web, or a fireproof coating material is wrapped around the web so as to leave a gap. Processing is widely adopted.

Further, in the pipe insertion portion for inserting the pipe into the pipe insertion hole formed in the web of the steel beam, a through hole or a notch corresponding to the pipe insertion hole of the steel beam is formed in the fireproof coating material covering both sides of the web. , The pipe is inserted into the pipe insertion hole of the steel beam while penetrating these through holes or notches.

Further, in Patent Document 1, a pair of fireproof fillers are attached around a pipe insertion hole formed in a steel beam web so as to sandwich the web from both sides, and a through hole formed in the pair of fireproof fillers. After overlapping the pipe insertion holes of the web with each other, a pair of notches facing the through holes of the pair of fireproof fillers are formed in the fireproof coating material wound around the steel beam so as to wrap the pair of fireproof fillers. , The fireproof coating structure of the pipe insertion portion in the steel beam extracted from the other notch by inserting the pipe inserted through one notch into the through hole of the fireproof filler and the pipe insertion hole of the web is shown.

According to the fireproof coating structure of the pipe insertion portion of the steel beam, the web of the steel beam is sandwiched inside the fireproof coating material while the fireproof coating material is formed with a notch to penetrate the pipe. Since the fireproof filler is provided, even if a gap is formed between the fireproof coating material and the pipe, the web of the steel frame beam is prevented from being exposed and good fireproof performance can be obtained.

Japanese Patent No. 5141592

By the way, at the construction site of a fireproof building having a steel structure, piping work may be performed before the fireproof coating treatment of the steel beam. In this case, the fireproof coating treatment is performed with the pipe inserted into the pipe insertion hole of the steel beam, but the conventional fireproof coating material and fireproof filler are exclusively for the construction before the piping. Since construction after piping is not taken into consideration, there is a problem that fireproof coating treatment after piping is impossible, or even if it is possible, workability is significantly reduced.

Further, if the piping work is performed prior to the fireproof coating treatment of the steel frame beam, the piping may not be inserted into the center of the piping insertion hole, and the piping may be inserted at a position deviated from the center. In such a case, not only the fireproof coating treatment after piping becomes more difficult, but also a gap may be generated between the fireproof coating material and the pipe or between the fireproof filler and the pipe, and the fireproof performance may be deteriorated. ..

In the present invention, the above circumstances are taken into consideration, and even if the piping work is performed prior to the fireproof coating treatment of the steel frame beam, the pipe insertion portion of the steel frame beam can be easily fireproof coated. It is an object of the present invention to provide a refractory coating structure , a refractory material, and a refractory coating method for a pipe insertion portion in a steel frame beam, which can flexibly respond to a deviation of a pipe and prevent a deterioration in fire resistance performance.

In order to achieve the above object, in the fireproof coating structure of the pipe insertion portion in the steel beam of the present invention, the pipe is inserted into the pipe insertion hole formed in the web of the H-shaped steel beam, and then the web and the pipe are fireproof filled. In a fireproof coating structure when covered with a material and a fireproof coating material,
The refractory filler has a penetrating portion through which the pipe penetrates and a notch connecting the penetrating portion and the outer edge of the refractory filler, and is fitted into the pipe along the notch on both sides of the web. , The structure is such that the web is sandwiched from both sides while the pipe is contained in the penetrating portion.
The refractory covering material has a penetrating portion of the pipe formed at a position corresponding to the penetrating portion of the refractory packing material, and one notch connecting the penetrating portion and the outer edge of the refractory covering material. The refractory packing material is coated with the pair of refractory fillers in a state where the refractory material is fitted into the pipe along the notch and the refractory material is fitted in the penetrating portion. without compressive deformation of the refractory filler in between the penetration portion of the refractory filler, it is a structure that covers the refractory filler.

In this way, since the fireproof filler and the fireproof coating material have a notch that can be fitted into the pipe inserted into the pipe insertion hole of the steel frame beam, the piping work is performed before the fireproof coating treatment of the steel frame beam. Even in such a case, the pipe insertion portion of the steel beam can be easily covered with fire resistance. Moreover, since the fire-resistant filler and the fire-resistant coating material are attached with reference to the pipe, even if the pipe is inserted in a state where it is deviated from the center of the pipe insertion hole, the space between the fire-resistant coating material and the pipe or the fire-resistant filler and the pipe It is possible to prevent a gap from being formed between the two, and to prevent deterioration of fire resistance performance.

In particular, the refractory filler covers the entire width direction range including the pipe insertion hole of the web in the H-section steel, and the notch is at an angle within 45 degrees with respect to the length direction of the web. It is provided so as to intersect.

Because of this configuration, when the fireproof filler is fitted into the pipe along the notch, even if the notch is open, the web is sandwiched between the pair of fireproof fillers from both sides, and it is fireproof. By pressing the filler between the upper and lower flanges of the H-shaped steel, not only the open cut portion can be closed, but also the closed state can be maintained.

Further, the penetrating portion of the refractory filler may be a notch or a small hole formed at the center of the notch.
In this way, the refractory filler can be fitted into the pipe with as few gaps as possible.

Further, in order to achieve the above object, in the present invention, a pipe is inserted into a pipe insertion hole formed in a web of an H-shaped steel beam, and then a mounting step of attaching a fireproof filler to the web and the pipe and the fireproof filling are performed. In a fireproof coating method having a coating step of coating a material and the pipe with a fireproof coating material,
The mounting step is performed by using a refractory filler having a main body portion, a penetrating portion provided in the main body portion through which the pipe can penetrate, and a notch connecting the penetrating portion and the outer edge of the main body portion. Including fitting the web into the pipe along the notch on both sides of the web and sandwiching the web from both sides with the pipe fitted in the penetration.
The covering step includes a main body portion, a penetrating portion that is provided in the main body portion and is formed at a position corresponding to the penetrating portion of the refractory filler and can penetrate the pipe, and the penetrating portion and the outer edge of the main body portion. It is a step of covering a pair of refractory fillers fitted in the pipe on both sides of the web by using a refractory coating material having one notch connecting between the two, and is fitted in the pipe along the notch. This is a refractory coating method including a step of coating the pair of refractory fillers with the pipes housed in the penetrating portion .

As described above, according to the present invention, even when the piping work is performed prior to the fireproof coating treatment of the steel frame beam, not only the pipe insertion portion of the steel frame beam can be easily fireproof coated, but also the pipe It is possible to flexibly respond to deviations and prevent deterioration of fire resistance performance.

It is sectional drawing which shows the fireproof coating structure of the pipe insertion part in the steel frame beam which concerns on embodiment of this invention. It is a figure which shows the state which the pipe is inserted into the pipe insertion hole of the steel frame beam before the fireproof coating treatment, (a) is the sectional view which shows the state which the pipe is inserted at the center position of the pipe insertion hole, ( b) is a cross-sectional view showing a state in which the pipe is inserted at a position deviated from the center of the pipe insertion hole. It is a figure which shows the refractory filler which concerns on embodiment of this invention, (a) is the side view of the refractory filler which hole was formed as the penetration part of a pipe, (b) is a notch as a penetration part of a pipe. A side view of the formed refractory filler, (c), is a side view of the refractory filler in which a small hole is formed at the center of the notch as a penetration portion of the pipe. (A) is a figure which shows the state which the fire-resistant filler which concerns on embodiment of this invention is attached to a steel frame beam, and is the side view of the steel frame beam which shows the state which covered the whole in the width direction of a web with a fire-resistant filler. , (B) is a side view of a steel frame beam showing a state in which a part of the web in the width direction is covered with a fireproof filler for reference. It is a perspective view which shows the process of fitting a refractory filler into a pipe inserted into a pipe insertion hole of a steel frame beam. (A) and (b) are diagrams showing an embodiment in which two cuts are formed in the fire-resistant filler, and (a) is a diagram of the fire-resistant filler in which two cuts are formed in the lateral direction of the penetrating portion of the pipe. A side view, (b) is a side view of a fire-resistant filler in which one cut is formed in each of a horizontal and a vertical direction of a pipe penetration, and (c) is a side view of a fireproof filler having two cuts in the vertical direction of the pipe penetration. It is a side view of the reference fireproof filler which formed. It is a figure which shows the refractory covering material which concerns on embodiment of this invention. FIG. It is a partial side view of the refractory covering material in which a small hole is formed in the center of the fireproof coating material. It is a perspective view which shows the process of fitting a refractory filler into a pipe inserted into a pipe insertion hole of a steel frame beam.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view showing a fireproof coating structure of a pipe insertion portion in a steel frame beam according to an embodiment of the present invention.
As shown in FIG. 1, the steel beam 10 according to the embodiment of the present invention is made of H-shaped steel, and has an upper and lower flanges 11 and 11 and a web 12 connecting the central portions of the upper and lower flanges 11 and 11. A floor panel 13 made of concrete, for example, is installed on the upper flange 11 so as to be integrally provided. Further, for example, a circular pipe insertion hole 14 is formed in the central portion of the web 12 in the width direction (vertical direction in FIG. 1), and pipes used for water supply / drainage, ventilation, wiring insertion, etc. 20 is inserted.

FIG. 2 is a diagram showing a state in which the pipe is inserted into the pipe insertion hole of the steel frame beam prior to the fireproof coating treatment, and FIG. 2A shows a state in which the pipe is inserted at the center position of the pipe insertion hole. The cross-sectional view (b) is a cross-sectional view showing a state in which the pipe is inserted at a position deviated from the center of the pipe insertion hole.
As shown in FIG. 2, the pipe 20 may be inserted into the pipe insertion hole 14 of the steel frame beam 10 before the fireproof coating treatment is performed. In this case, since the pipe 20 is not restricted by the position of the fireproof coating member, there is no guarantee that the pipe 20 will be inserted at the center position of the pipe insertion hole 14, as shown in FIG. As shown in (b), the pipe may be inserted at a position deviated from the center of the pipe insertion hole 14.

Hereinafter, the fireproof coating structure in the case where the pipe 20 is inserted into the pipe insertion hole 14 formed in the web 12 of the steel frame beam 10 and then the web 12 and the pipe 20 are covered with the fireproof fillers 30 and 30 and the fireproof covering material 40. explain.
The refractory fillers 30 and 30 and the refractory coating material 40 form a refractory material with both members.

3A and 3B are views showing a refractory filler according to an embodiment of the present invention, FIG. 3A is a side view of the refractory filler having holes formed as a penetration portion of a pipe, and FIG. 3B is a penetration of the pipe. A side view of the refractory filler having a notch formed as a portion, (c) is a side view of the refractory filler having a small hole formed at the center of the notch as a penetrating portion of the pipe.
As shown in FIGS. 1 and 3, the refractory fillers 30 and 30 have the flexibility of forming, for example, rock wool into a substantially rectangular parallelepiped shape, and penetrate between the central portions of the side surfaces 31 and 31 thereof. A portion 32 is formed, and the portion 32 is attached to the steel beam 10 with the pipe 20 penetrating therethrough.

As shown in FIG. 3A, the through portion 32 of the refractory fillers 30 and 30 may be a circular through hole 33 having a diameter substantially equal to or slightly smaller than the outer diameter of the pipe 20. it can. In this way, the pipe 20 can be penetrated with as few gaps as possible. Further, the penetrating portion 32 may be a radial (for example, cross-shaped) notch 34 as shown in FIG. 3B. In this case, the pipe 20 is penetrated in a state where the circumference of the notch 34 is rolled up. To. When the penetrating portion 32 is a notch 34, a small hole 35 may be formed at the center of the notch 34 as shown in FIG. 3 (c).

FIG. 4A is a diagram showing a state in which the fire-resistant filler according to the embodiment of the present invention is attached to the steel beam, and shows a state in which the entire width direction of the web is covered with the fire-resistant filler. A side view, (b) is a side view of a steel frame beam showing a state in which a part of the web in the width direction is covered with a fireproof filler for reference.
As shown in FIGS. 1 and 4, the refractory fillers 30 and 30 are attached to the steel beam 10 with the web 12 sandwiched from both sides. At this time, the refractory fillers 30 and 30 can cover the entire width direction of the web 12 as shown in FIG. 4A. In this way, the fireproof fillers 30 and 30 that cover the entire width direction of the web 12 are fitted into the space surrounded by the upper and lower flanges 11 and 11 of the steel frame beam 10 and the web 12, and thus are separately attached. It has the advantage that it can be easily installed without using fixing means.

FIG. 5 is a perspective view showing a step of fitting a refractory filler into a pipe inserted into a pipe insertion hole of a steel frame beam.
As shown in FIGS. 3 to 5, the refractory fillers 30 and 30 have a notch 37 connecting the outer edge 36 and the penetrating portion 32, and by opening the notch 37, the pipe 20 is formed. On the other hand, the refractory fillers 30 and 30 can be fitted from the side. Then, in the fireproof coating treatment of the present invention performed after the pipe 20 is inserted into the pipe insertion hole 14 of the steel frame beam 10, the fireproof fillers 30 and 30 are fitted into the pipe 20 along the notch 37 on both sides of the web 12. The pipe 20 is attached to the steel beam 10 so as to sandwich the web 12 from both sides in a state where the pipe 20 is contained in the penetrating portion 32.

When the refractory fillers 30 and 30 are fitted into the pipe 20 along the notch 37, the portion of the notch 37 may remain open. In this case, it is possible to close the portion of the notch 37 by using a fixture such as a clip, but as shown in FIG. 4 (a), the portion of the open notch 37 without using a fixture is used. Can be closed and kept closed. That is, as shown in FIG. 4A, the fireproof fillers 30 and 30 cover the entire width direction range including the pipe insertion hole 14 of the web 12 in the steel frame beam 10, and the fireproof filler 30 , 30 notches 37 shall intersect at an angle within 45 degrees with respect to the length direction of the web 12. In this way, when the refractory fillers 30 and 30 are fitted into the pipe 20 along the notch 37, the web 12 is formed by the pair of refractory fillers 30 and 30 even if the notch 37 is open. By pressing the refractory fillers 30 and 30 between the upper and lower flanges 11 and 11 at the stage of sandwiching from both sides, it is possible not only to close the open notch 37 but also to maintain the closed state. become.

The notches 37 in the refractory fillers 30 and 30 are not limited to one, and may be two or more. When the pipe 20 is thick, if only one notch 37 is used, the opening of the notch 37 may be insufficient and the pipe 20 may not be fitted into the pipe 20. Therefore, as shown in FIGS. 6A to 6B, if a plurality of notches 37 are formed in the refractory fillers 30 and 30, so that the refractory fillers 30 and 30 can be divided, the refractory fillers 30 and 30 are thick. Fitting into the pipe 20 can be easily performed.

The fireproof coating material 40 has the flexibility of, for example, molding rock wool into a mat shape, and as shown in FIG. 1, is substantially U with respect to the steel beam 10 to which the fireproof fillers 30 and 30 are attached. Wrapped in a letter. The refractory coating material 40 is fixed, for example, by inserting a metal fixing pin from the outside of the refractory coating material 40 and stud welding the fixing pin to a suitable position of the steel frame beam 10.

7A and 7B are views showing a fireproof coating material according to an embodiment of the present invention, FIG. 7A is a partial side view of the fireproof coating material in which a notch is formed as a penetrating portion of the pipe, and FIG. 7B is a partial side view of the pipe. It is a partial side view of a refractory covering material in which a small hole is formed in the center of a notch as a penetrating portion.
As shown in FIG. 7, the refractory covering material 40 is formed with a penetrating portion 41 for penetrating the pipe 20 at a position corresponding to the penetrating portion 32 of the refractory fillers 30 and 30. The penetrating portion 41 can be a radial (for example, cross-shaped) notch 42 as shown in FIG. 7A. In this case, the pipe 20 penetrates in a state where the circumference of the notch 42 is rolled up. Will be done. In this way, the pipe 20 can be penetrated with as few gaps as possible. When the penetrating portion 41 is used as the notch 42, a small hole 43 may be formed at the center of the notch 42 as shown in FIG. 7B.

FIG. 8 is a perspective view showing a step of fitting the refractory filler into the pipe inserted into the pipe insertion hole of the steel frame beam.
As shown in FIGS. 7 and 8, the refractory covering material 40 has a notch 45 connecting the outer edge 44 (upper end edge) and the penetrating portion 41, and the pipe is connected by opening the notch 45. The fireproof coating material 40 can be fitted into the 20 from below. Then, in the fireproof coating treatment of the present invention performed in a state where the pipe 20 is inserted into the pipe insertion hole 14 of the steel frame beam 10, the fireproof coating material 40 is fitted into the pipe 20 from below along the notch 45, and the pipe 20 is inserted. Is fixed to the steel beam 10 so as to cover the pair of fireproof fillers 30 and 30 in a state where the pipe is contained in the penetrating portion 41.

As shown in FIG. 1, the circumference of the notch 42 that was rolled up when the fireproof coating material 40 was fitted into the pipe 20 was extended not inside the fireproof coating material 40 but outside the fireproof coating material 40. It is preferable to run along the outer circumference of the pipe 20. In this way, the gap between the pipe 20 and the refractory covering material 40 can be closed by utilizing the rolled-up portion around the notch 42.

According to the fireproof coating structure of the pipe insertion portion in the steel beam 10 of the present embodiment configured as described above, the pipe 20 is inserted into the pipe insertion hole 14 formed in the web 12 of the steel beam 10, and then the web 12 In the fireproof coating structure in which the pipe 20 and the pipe 20 are covered with the fireproof fillers 30 and 30 and the fireproof coating material 40, the fireproof fillers 30 and 30 have a penetrating portion 32 penetrating the pipe 20 and the penetrating portion 32 and the fireproof coating material 40. The web 12 has a notch 37 connecting between the outer edges 36 of the fillers 30 and 30, and is fitted into the pipe 20 along the notch 37 on both sides of the web 12, and the web 12 is fitted in the through portion 32. The fireproof coating material 40 sandwiched from both sides includes a penetration portion 41 through which the pipe 20 is formed at a position corresponding to the penetration portion 32 of the fireproof fillers 30 and 30, and the penetration portion 41 and the outside of the fireproof coating material 40. It has a notch 45 that connects between the edges 44, is fitted into the pipe 20 along the notch 45, and covers the pair of fireproof fillers 30 and 30 in a state where the pipe 20 fits in the through portion 41. Even when the piping work is performed prior to the fireproof coating treatment of 10, the pipe insertion portion of the steel beam 10 can be easily fireproof coated.
Moreover, since the fireproof fillers 30 and 30 and the fireproof coating material 40 are attached with reference to the pipe 20, even if the pipe 20 is inserted in a state where the pipe 20 is deviated from the center of the pipe insertion hole 14, the fireproof coating material 40 and the pipe It is possible to prevent a gap between the 20s and between the fireproof fillers 30 and 30 and the pipe 20 and prevent deterioration of the fireproof performance.

Although the fireproof coating structure of the pipe insertion portion of the steel beam of the present invention has been described by showing embodiments, the fireproof coating structure of the pipe insertion portion of the steel beam of the present invention is limited to the above-described embodiment. It goes without saying that various changes can be made within the scope of the claims.

For example, the material for forming the refractory filler and the refractory coating material may be other than rock wool. Further, the shape of the refractory filler is not limited to a rectangular parallelepiped, and may be any shape.

The present invention can be applied to a fireproof coating structure of a pipe insertion part in a steel beam made of H-shaped steel. In particular, the pipe is inserted into a pipe insertion hole formed in the web of the steel beam, and then the web and the pipe are fireproof. It is suitable for a fireproof coating structure when covered with a filler and a fireproof coating material.

10 Steel beam 11 Flange 12 Web 13 Floor panel,
14 Piping insertion hole 20 Piping 30 Fireproof filler 32 Penetration 33 Throughhole 34 Cut 35 Small hole 36 Outer edge 37 Cut 40 Fireproof coating 41 Penetration 42 Cut 43 Small hole 44 Outer edge 45 Cut

Claims (10)

In a fireproof coating structure in which a pipe is inserted into a pipe insertion hole formed in a web of an H-shaped steel beam, and then the web and the pipe are covered with a fireproof filler and a fireproof coating material.
The refractory filler is a notch connecting the penetrating portion of the pipe and between the penetrating portion and the outer edge of the fireproof filler, and guides the pipe to the penetrating portion so that the pipe is fitted into the penetrating portion. It has a structure for sandwiching the web from both sides in a state where the pipe is fitted into the pipe along the cut on both sides of the web and the pipe is fitted in the penetration portion.
The refractory covering material has a penetrating portion of the pipe formed at a position corresponding to the penetrating portion of the refractory packing material, and one notch connecting the penetrating portion and the outer edge of the refractory covering material. The refractory packing material is coated with the pair of refractory fillers in a state where the refractory material is fitted into the pipe along the notch and the refractory material is fitted in the penetrating portion. It is a structure that coats the refractory filler with the penetrating portion of the refractory filler without compressing and deforming the refractory filler .
The refractory filler is
In the state of being fitted in the pipe,
Adheres to the surface of the pipe in a state of being inserted into the pipe insertion hole, and
A fireproof coating structure for a pipe insertion portion in a steel beam, which does not exist between the pipe and the pipe insertion hole . The refractory coating material has curled portions on both sides of the web, which are formed by rolling up the notches provided in the penetrating portion when the notches are fitted into the pipe.
The curled portion extends along the outer periphery of the pipe, which is outside the fireproof coating material and extends to the side opposite to the side where the fireproof coating material covers the fireproof filler.
The steel frame beam according to claim 1, wherein the refractory filler is attached so as to penetrate through a pipe, and the filler is not provided with a fixture for separately fixing to the pipe. Fireproof coating structure of the pipe insertion part. The refractory filler covers the entire width direction range including the pipe insertion hole of the web in the H-section steel, and the notch of the refractory filler is 45 degrees with respect to the length direction of the web. The fireproof coating structure of a pipe insertion portion in a steel frame beam according to claim 1 or 2, characterized in that they intersect at an angle within. The pipe insertion portion of the steel frame beam according to any one of claims 1 to 3, wherein the notch of the fireproof coating material is at right angles or substantially at right angles to the length direction of the web. Fireproof coating structure. The penetrating portion of the fireproof filler has a small hole formed at the center of the notch or the notch, and the penetrating portion of the fireproof coating material has a small hole formed at the center of the notch or the notch. The fireproof coating structure of the pipe insertion portion in the steel frame beam according to any one of claims 1 to 4. A refractory material comprising the refractory filler and the refractory coating material used in the fireproof coating structure according to any one of claims 1 to 5. A mounting step of inserting a pipe into a pipe insertion hole formed in a web of an H-shaped steel beam and then attaching a fire-resistant filler to the web and the pipe, and a coating for covering the fire-resistant filler and the pipe with a fire-resistant coating material. In a fireproof coating method having a step,
The mounting step is performed by using a refractory filler having a main body portion, a penetrating portion provided in the main body portion through which the pipe can penetrate, and a notch connecting the penetrating portion and the outer edge of the main body portion. Including fitting the web into the pipe along the notch on both sides of the web and sandwiching the web from both sides with the pipe fitted in the penetration.
The covering step is provided on the main body portion and the main body portion, and is formed at a position corresponding to the penetrating portion of the refractory filler, and the penetrating portion of the pipe, and the penetrating portion and the outer edge of the main body portion. It is a step of coating a pair of refractory fillers fitted in the pipe on both sides of the web by using a fireproof coating material having one notch connecting between the two, and is fitted in the pipe along the notch. , look including the step of covering said pair of refractory filler in a state in which the pipe is accommodated in the through section,
The refractory filler is
In the state of being fitted in the pipe,
Adheres to the surface of the pipe in a state of being inserted into the pipe insertion hole, and
A fireproof coating method that does not exist between the pipe and the pipe insertion hole . A mounting step of inserting a pipe into a pipe insertion hole formed in a web of an H-shaped steel beam and then attaching a fire-resistant filler to the web and the pipe, and a coating for covering the fire-resistant filler and the pipe with a fire-resistant coating material. In a fireproof coating method having a step,
The mounting step is performed by using a refractory filler having a main body portion, a penetrating portion provided in the main body portion through which the pipe can penetrate, and a notch connecting the penetrating portion and the outer edge of the main body portion. is fitted into the pipe along said incision on both sides of the web, seen including a sandwiching from both sides of the web in a state in which the pipe is accommodated in the through section,
The refractory filler is
In the state of being fitted in the pipe,
Adheres to the surface of the pipe in a state of being inserted into the pipe insertion hole, and
A fireproof coating method that does not exist between the pipe and the pipe insertion hole . A mounting step of inserting a pipe into a pipe insertion hole formed in a web of an H-shaped steel beam and then attaching a fire-resistant filler to the web and the pipe, and a coating for covering the fire-resistant filler and the pipe with a fire-resistant coating material. In a fireproof coating method having a step,
The covering step is provided on the main body portion and the main body portion, and is formed at a position corresponding to the penetrating portion of the refractory filler, and the penetrating portion of the pipe, and the penetrating portion and the outer edge of the main body portion. It is a step of coating a pair of refractory fillers fitted in the pipe on both sides of the web by using a fireproof coating material having one notch connecting between the two, and is fitted in the pipe along the notch. , look including the step of covering said pair of refractory filler in a state in which the pipe is accommodated in the through section,
The refractory filler is
In the state of being fitted in the pipe,
Adheres to the surface of the pipe in a state of being inserted into the pipe insertion hole, and
A fireproof coating method that does not exist between the pipe and the pipe insertion hole . The coating step is characterized in that the refractory coating material coats the refractory filler between the pipe and the penetrating portion of the refractory filler in the radial direction of the pipe without compressing and deforming the refractory filler. The fireproof coating method according to claim 7 or 9.

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