JPH11229523A - Fireproof structure for unit building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply fit a cover material by fitting a fireproof outer wall material to the outdoor face of a beam, covering the indoor side of the beam with a soft fireproof cover material, and fixing the one side edge section of the fireproof cover material between the beam and the outer wall material. SOLUTION: A floor substrate material 24 of an ALC board buried with reinforcing bars is suspended between opposite floor beams 22, bolts/nuts 221 connected to the reinforcing bars and the floor beams 22 are connected by connecting materials 222, and the floor substrate material 24 is fitted to the floor beams 22. A spacer 241 of a particle boards long body is fitted on the floor substrate material 24, wooden floor joists 242 are fitted on the spacer 241, and a floor material of the particle board is fitted on the floor joists 242 to form a floor. A flexible fireproof cover material 3 formed by wrapping a heat absorbing pack and a ceramic felt with a cloth with an aluminum foil is mounted on the floor beams 22 to cover them, and it is fixed to the floor substrate material 24 by nails 31, thereby execution can be extremely simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof structure for a unit building.

[0002]

2. Description of the Related Art In recent years, a fire protection area or a quasi-fire protection area has been designated, and a building built in this fire proof area or a quasi-fire protection area is obliged to have good fire resistance and fire protection performance, such as a fire-resistant structure and a fire-resistant structure. Have been. Also, apartments, hospitals, hotels,
Buildings having three stories or more for use as boarding houses and the like are required to have a fireproof structure having a predetermined fireproof performance according to the Building Standards Law.

[0003] Buildings with this fireproof structure must pass a fireproof test specified by JIS, except for the structure specified by the Building Standards Law. In order to pass this fire resistance test, it is necessary to prevent steel structural materials such as columns and beams from becoming hot and causing a significant decrease in mechanical strength when heated under specified temperature conditions. Steel structural materials such as beams and beams are covered with a fire-resistant coating material.

[0004] On the other hand, in the unit building, a box-shaped building unit of fixed size that can be transported and finished inside and outside is manufactured in a factory in advance, and a plurality of the building units are installed on a construction site. In recent years, it has been widely adopted because it has a feature that it is a standardized building with a short on-site construction period and high dimensional accuracy.

Various structures are known for this unit building. For example, in Japanese Patent Publication No. 62-62224,
It has a framework consisting of pillars arranged at the four corners of a rectangle, floor beams connecting the lower ends of the pillars along the sides of the rectangle, and ceiling beams connecting the upper ends of the columns along the sides of the rectangle. A unit building in which a plurality of building units are assembled is described.

As described in Japanese Patent Publication No. 5-69937 (hereinafter referred to as Conventional Example 1), the fire-resistant structure of the pillars of the unit building is such that when the building unit is previously installed, the surfaces of the adjacent pillars face each other. After the other side is covered with a hard refractory coating (for example, calcium silicate board) and the building units are installed adjacent to each other, the hard refractory coating attached to the column and the hard refractory coating attached to the column There is known a structure in which another hard refractory coating is inserted between the refractory coating and a plurality of adjacent columns are surrounded by the hard refractory coating.

[0007] The fireproof structure of the beams of the unit building is disclosed in Japanese Patent Application Laid-Open Nos. 6-57840 and 9-6015.
As described in Japanese Patent No. 1 (hereinafter referred to as Conventional Example 2), a structure is known in which beams such as ceiling beams and floor beams are covered with a flexible fireproof covering material. In Japanese Patent Publication No. 7-81339 (hereinafter referred to as Conventional Example 3), a notch is provided in a flexible fire-resistant coating material covering a beam such as a ceiling beam or a floor beam, and a joist, a small beam, or the like is passed through the notch. There is known a fire-resistant structure in which a beam is inserted and attached to a beam.

[0008]

However, as described in the prior art 1, the fire-resistant structure covered with a hard fire-resistant coating material is not suitable for unit buildings. In other words, when a hard refractory coating material is constructed on the construction site, the number of on-site construction man-hours such as cutting to a block size on the site increases, and the characteristics of the unit building that the on-site construction man-hour is small and the construction period is short are reduced. However, there is also a problem that a hard refractory coating material generates powder at the time of cutting at the site and deteriorates the working environment.
Also, if the building unit beams are covered with a hard fire-resistant coating at a factory or the like and transported to the construction site, the fire-resistant coating may be peeled off due to vibrations during transportation of the building unit or accidents that come into contact with other objects. It may be damaged or damaged. or,
When the building units vibrate separately due to an earthquake, heavy vehicles passing on a road, or the like, there is a problem that the hard refractory covering material attached to the gap between the building units is peeled or damaged.

As described in Conventional Example 2, it is extremely preferable to cover a beam or the like with a flexible fire-resistant coating material without the problems described above. However, this flexible fire-resistant coating material is coated on a beam or the like. Sometimes, such as a beam to which an outer wall or a small beam is attached, or a beam through which a pipe such as a cable pipe or a water pipe passes, a flexible fire-resistant covering material in which an obstacle is attached near the beam or the beam. However, there is a problem that it is difficult to attach.

As described in Conventional Example 3, in a structure in which a notch is provided in a flexible refractory coating material and a small beam, a joist and the like are attached through the notch, there is a problem that the number of steps for providing the notch increases. However, if the position and size of the notch are not accurate, a flexible fireproof covering material cannot be attached properly. Therefore, there is a problem that a high degree of accuracy is required for the position and the size of the notch, and the construction is extremely difficult. Accordingly, an object of the present invention is to provide a flexible fire-resistant coating for a beam having an obstruction attached in the vicinity of the beam or the beam, such as a beam to which an outer wall, a small beam or the like is attached, or a beam through which a pipe passes. It is an object of the present invention to provide a fireproof structure of a unit building to which materials can be easily attached.

[0011]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and to achieve the above object.
The invention according to claim 1 is a fireproof structure of a unit building in which a plurality of building units are assembled, wherein the building unit has a skeleton in which columns and beams are formed in a substantially box shape. A fire-resistant outer wall material is attached to the outdoor surface, the indoor side of the beam is covered with a flexible fire-resistant coating, and one side edge of the fire-resistant coating is sandwiched between the beam and the outer wall and fastened. Is what it is.

According to a second aspect of the present invention, there is provided a fireproof structure of a unit building in which a plurality of building units are assembled, wherein the building unit has a skeleton in which columns and beams are formed in a substantially box shape. A plurality of small beams are spread over the opposing beams at a predetermined interval, the small beams are connected to the beams via the mounting plate, and a mounting plate attached to the small beams, The beam between the mounting plate and the next mounting plate or the next beam is covered with a flexible fireproof covering material of approximately the same length as that between the next mounting plate or the next beam that is spaced apart. Is what it is.

According to a third aspect of the present invention, there is provided a fireproof structure of a unit building in which a plurality of building units are assembled, wherein the building unit has a skeleton in which columns and beams are formed in a substantially box shape. The beam is covered with a flexible refractory coating, the flexible refractory coating is provided with a through-hole, a pipe is passed through the through-hole, and the flexible refractory coating on the periphery of the through-hole is formed from the pipe. A non-combustible adhesive tape is attached to the outer peripheral surface to close a gap between the flexible fire-resistant coating material and the pipe.

The flexible refractory coating used in the present invention is:
It is a fire-resistant coating material that is easily deformed when force is applied. An endothermic pack packed in a gel form with a polymer and a fireproof covering material (“Aquacover” manufactured by Ask Co., Ltd.) in which ceramic felt having a fireproof temperature of 1000 ° C. or more is wrapped with a cloth with an aluminum foil are preferable. Among them, the last-mentioned flexible refractory coating material takes a large amount of heat when the water in the heat absorbing pack evaporates in the event of a fire, and this heat absorbing action can prevent the temperature rise of steel frames such as beams and columns, so preferable.

The non-combustible pressure-sensitive adhesive tape used in the third aspect of the present invention is a non-combustible base material provided with a pressure-sensitive adhesive layer on an aluminum foil base, and the surface of the base material is provided with a pressure-sensitive adhesive. Most preferred is a layered aluminum adhesive tape.

(Function) In the invention of claim 1, a fire-resistant outer wall material is attached to the outdoor surface of the floor beam and the ceiling beam, and the indoor side of at least one of the floor beam and the ceiling beam is flexible. Since the beam is covered with the fire-resistant coating, the outside surface of the beam is covered with the outer wall material, and the inside of the beam is covered with the flexible fire-resistant coating. Furthermore, since one side edge of the flexible fire-resistant coating is sandwiched and fastened between the beam and the outer wall, the outer wall and the flexible fire-resistant coating are in close contact with each other, and Also has good fire resistance. Therefore, the outdoor side and the indoor side of the beam are covered with a material having good fire resistance, so that the beam has good fire resistance.

Further, as described above, since one side edge of the refractory coating material is fixed between the beam and the outer wall material, the flexible material temporarily fixed with an adhesive tape at the time of construction is used. By simply attaching the outer wall material to the beam covered with the refractory coating while pressing the flexible refractory coating, one side edge of the flexible refractory coating adheres to the outer wall material. Therefore, the construction is extremely simple.

According to the second aspect of the present invention, a plurality of small beams are provided at predetermined intervals to at least one of the floor beam and the ceiling beam, and the small beams are connected via the mounting plate. , The connecting portion between the small beam and the beam is connected by a mounting plate. Therefore, the connecting portion of the small beam connected to the beam has a very small horizontal length.

Then, a flexible refractory coating material having a length substantially equal to that between the mounting plate and an adjacent mounting plate or an adjacent beam inserted at a predetermined distance from the mounting plate is adjacent to the mounting plate. Since the indoor side of the mounting plate or the beam between adjacent beams is covered, the mounting plate,
The indoor side of the beam between the next mounting plate or the next beam is coated with a flexible fireproof coating. Moreover, a gap corresponding to the horizontal length of the mounting plate is created between the flexible fire-resistant coating covering the indoor side of the beam and the adjacent flexible fire-resistant coating. As described above, the length is extremely small, so that the flexible refractory coating can be easily closed by slightly extending it.

In addition, the indoor side of the beam between the mounting plate and the adjacent mounting plate or the adjacent beam with the fire-resistant covering material has a length substantially equal to the distance between the mounting plate and the adjacent mounting plate or the adjacent beam. Since it is merely covered with a flexible refractory covering material, there is no need to provide a notch at a precise position as in the prior art, and the construction is extremely simple.

According to the third aspect of the present invention, the beam is covered with a flexible refractory covering material, a through hole is provided in the flexible refractory covering material, a pipe is passed through the through hole, and a peripheral portion of the through hole is provided. Non-combustible adhesive tape is attached to the outer peripheral surface of the pipe from the flexible fire-resistant coating material, and the gap between the flexible fire-resistant coating material and the pipe is closed. There is no gap, and therefore, no flame enters from this space, and the beam has good fire resistance.

Moreover, since this adhesive tape is nonflammable, it does not burn even in a fire, and has good fire resistance.
Then, a through hole is provided in the flexible fire-resistant coating material, and after passing the pipe through this hole, the non-combustible adhesive tape is simply attached to the outer peripheral surface of the pipe from the flexible fire-resistant coating material at the peripheral portion of the through hole. Therefore, the construction is extremely simple.

[0023]

Next, embodiments of the present invention will be described. (Embodiment 1) FIGS. 1 to 7 show one embodiment of the present invention. FIG. 1 is an explanatory view showing a part of a vertical section of a floor beam portion of a unit building, and FIG. 2 is a ceiling portion of the unit building. FIG. 3 is an explanatory view showing a part of a vertical section of a boundary portion between a building unit and a roof panel, FIG. 3 is an explanatory view showing a skeleton of a building unit, and FIG. 4 is a state in which a flexible fireproof covering material is attached to floor beams of the building unit. (A) is an explanatory view showing a state in which a flexible fireproof covering material is attached to a floor base material, (b) is an explanatory view showing a state in which a floor material is mounted on a floor base material, ( (C) is an explanatory view showing a state in which the flexible fireproof covering material is temporarily fixed to the floor beam,
(D) is a side view showing a floor beam to which a flexible fireproof material is attached, FIG. 5 shows a state in which a flexible fireproof material is attached to a ceiling beam of a building unit, and (A) is a floor beam. Explanatory drawing showing a state where a receiving plate is attached to the receiving plate and a double-sided adhesive tape is attached to the receiving plate, (b) is an explanatory view showing a state where a flexible fireproof covering material is attached,
(C) is an explanatory view showing a state in which a connection portion between the ceiling beam and the ceiling beam is covered with a fireproof covering material, and (d) shows a state in which a flexible fireproof covering material is temporarily fixed to the ceiling beam. Explanatory diagram,
(E) is a side view showing a ceiling beam to which a flexible fireproof covering material is attached, FIG. 6 is an explanatory diagram showing a state where an outer wall material is attached to a building unit, and FIG. 7 is an explanatory diagram showing a unit building.

1 to 7, reference numeral 1 denotes a unit building. As shown in FIG. 7, the unit building 1 has nine first-floor building units 2 installed on a base 95, and In this example, nine second-floor building units 2 are installed, on which nine third-floor building units 2 are installed, and a roof panel 8 is mounted thereon.

As shown in FIG. 3, the skeleton of the building unit 2 is a steel cross-section tube-shaped cylindrical body disposed at four corners of a rectangle.
Four pillars 21 and four floor beams 22 of a steel U-shaped long body in which the lower ends of the four pillars 21 are connected along rectangular sides.
(With the opening having a U-shaped cross section inside), and four ceiling beams 23 (an U-shaped cross section made of steel) having a long U-shaped cross section formed by connecting the upper ends of the four pillars 21 along the rectangular sides. With the opening inside).

Then, as shown in FIG. 1, a floor base material 24 of an ALC board having a reinforcing bar buried in the opposing floor beam 22 and the bolt / nut 221 and the floor beam 22 connected to the reinforcing bar are connected to each other. The floor base material 24 is connected to the floor beam 22 by being connected by the connecting material 222, and a long particle board spacer 241 is mounted thereon.
1, a wooden floor joist 242 is mounted thereon, and a floor board 25 of a particle board is mounted on the floor joist 242 to form a floor.

A nail 31 is provided around the floor base material 24,
A flexible refractory coating 3 is mounted over the floor beam 22. This refractory coating material 3 is obtained by wrapping a heat absorbing pack obtained by solidifying water into a gel with a high endothermic polymer and packing a ceramic felt having a refractory temperature of 1000 ° C. or higher with a cloth with aluminum foil.

A method of attaching the flexible fireproof covering material 3 to the floor beam 22 will be described with reference to FIG. As shown in FIG. 4 (a), the flexible refractory covering 3
Is placed on the flexible refractory coating material 3 and the floor base material 2 in the vicinity thereof.
The flexible fireproof covering material 3 is attached to the floor base material 24 by driving a nail 31 into the base material 4. Next, as shown in FIG. 4B, a spacer 241 is mounted on the floor base material 24, a floor joist 242 is mounted thereon, and a floor material 25 is mounted thereon.

Next, as shown in FIG. 4C, the flexible fire-resistant coating 3 is wound in the outdoor direction from above the floor beam 22, and the side edge of the flexible fire-resistant coating 3 is formed into a U-shaped cross section. A non-combustible adhesive tape 32 is adhered from above along the outdoor side surface (web surface) of the floor beam 22, and the flexible fireproof covering material 3 is temporarily fixed to the floor beam 22. At this time, the non-combustible adhesive tape 3
Reference numeral 2 denotes an aluminum adhesive tape having an aluminum foil as a base material and an adhesive layer provided on the surface of the base material. In this way, the indoor side of the floor beam 22 is covered with the flexible fireproof covering material 3 and the floor base material 24 as shown in FIG.

Also, as shown in FIG.
The ceiling beam 231 is connected to the ceiling beam 23 via a mounting plate 235 made of a steel plate. As shown in FIG. 2, a ceiling edge 232 is attached below the ceiling beam 131, and a gypsum board ceiling material 26 is attached to a lower surface of the ceiling edge 232 to form a ceiling. . Next, the ceiling beam 23
Next, a method of attaching the flexible fireproof covering material 3 will be described with reference to FIG.

As shown in FIG. 5 (a), a long plate spring 7 having an L-shaped cross section as a fire-resistant coating material receiving plate is attached to the upper surface of the ceiling beam 23. A double-sided adhesive tape 72 is attached. Next, as shown in FIG. 5B, the upper edge of the flexible fire-resistant coating material 3 is put along the flexible fire-resistant coating material 3, and the flexible fire-resistant coating material 3 is pressed against the double-sided adhesive tape 72 and attached. Next, a pin 73 made of aluminum is passed through the flexible refractory coating material 3 from the leaf spring 7, and the tip is bent and attached.

Then, as shown in FIG. 5 (c), the flexible refractory coating material 3 is applied to the outdoor web surface from the U-shaped opening surface (indoor side) of the ceiling beam 23 through the lower flange surface. As it arrives, it is wound around the ceiling beam 23 and is temporarily fixed with a nonflammable adhesive tape 32 along the outdoor side surface of the ceiling beam 23. At this time, the length of the flexible refractory coating material 3 to be used is
The distance is substantially equal to the distance between the mounting plate 235 to which the ceiling beam 231 is mounted and the adjacent mounting plate 235 or the ceiling beam 23.

Therefore, as shown in FIG. 5D, the ceiling beam 23 between the mounting plate 235 on which the ceiling beam 231 is mounted and the adjacent mounting plate 235 or the ceiling beam 23 is provided.
When the flexible fire-resistant covering material 3 is wound around and attached to the ceiling beam 23, the flexible fire-resistant covering material 3 can be easily attached to the ceiling beam 23 because there is no obstacle between them. Since the mounting plate 235 is formed by vertically extending a metal plate, the connecting portion of the small beam connected to the beam (the mounting plate 235 portion) has an extremely small horizontal length.

Therefore, the length (L) between the mounting plate 235 and the adjacent mounting plate 235 is extremely small, and the flexible refractory coating can be closed by only slightly extending it. The place where the outer wall material 4 is provided includes a floor beam 22 and a ceiling beam 23.
The outer wall 4 of the ALC board in which the reinforcing steel is buried is attached.

As shown in FIG. 6, the outer wall member 4 is attached by placing the lower end surface of the outer wall member 4 on a hooking piece 29 attached to the floor beam 22 and the upper end toward the ceiling beam 13. Then, the upper end of the outer wall member 4 is fixed to the ceiling beam with a fastener (not shown). In this way, one side edge of the refractory coating material 3 temporarily fixed to the web surface of the ceiling beam 23 and the floor beam 22 is sandwiched between the floor beam 22, the ceiling beam 23, and the outer wall material 4, respectively. It is fixed. Then, the space between the flexible fire-resistant coating material 3 and the outer wall material 4 comes into close contact.

As described above, the outdoor side of the ceiling beam 23 and the floor beam 22 is covered with the outer wall material 4 having good fire resistance, and the indoor side is covered with the flexible fire-resistant covering material 3 and the boundary portions are in close contact. The ceiling beam 23 and the floor beam 22 have good fire resistance. Also, outer wall material 4
Just by attaching the flexible fire-resistant covering material 3 between the outer wall material and the floor beam 22 or the ceiling beam 23, the fire resistance of this portion is improved and the construction is easy.

On the back side of the outer wall material 4, an inner wall panel 5 is erected. This inner wall panel 5 has gypsum board inner wall members 52 attached to both sides of a wooden frame 51, and a heat insulating material 5
3 is attached. As shown in FIG. 2, the roof panel 8 is a roof beam 8 having a substantially rectangular frame and a rectangular cross section.
1 and A connected thereto by a connecting member 83 having an L-shaped cross section.
It comprises a roof slab 82 of LC and a heat insulating material 84 mounted on the roof slab 82.

Next, a method of constructing the unit building 1 will be described. First, at a factory, a building unit 2 shown in FIG.
Of the building unit 2 and the flexible fireproof covering material 3 is attached to the floor beams 22 and the ceiling beams 23 of the building unit 2.
4, floor joist 242, ceiling material 6, inner wall panel 5, outer wall material 4
The building unit 2 is manufactured by attaching or the like or performing other finishing. Further, the roof unit 8 is manufactured.

The building unit 2 manufactured as described above,
The roof unit 8 and the like are transported to the construction site.
The building unit 2 on the first floor is previously installed on the foundation 95 provided, and the building unit 2 on the second floor is installed on the building unit 2 on the first floor. The building unit 2 on the third floor is installed, and the roof unit 8 is mounted on the building unit 2 on the third floor. At this time, when the building unit 2 on the upper floor is installed on the building unit 2 on the lower floor, the flexible fireproof covering material 3 covering the leaf spring 7 attached to the ceiling beam 23 on the lower floor becomes
The elasticity of the leaf spring 7 presses against the lower surface of the floor base material 24 on the upper floor, and this portion comes into close contact.

Then, the floor beams 22 of the building unit 2 on the lower floor are
And the ceiling beam 23 of the building unit 2 on the upper floor has improved fire resistance. That is, the outdoor side is covered with a fire-resistant outer wall material 4, and the indoor side is a flexible fire-resistant covering material 3 covering the indoor side opening from the lower flange of the ceiling beam 23 of the building unit 2 on the lower floor. And the floor base material 24 of the building unit 2 on the upper floor and the fireproof covering material 3 covering the upper flange of the floor beam 22, and furthermore, the outer wall material 4 and the ceiling beam 23 of the building unit 2 on the lower floor are formed. Since the boundary between the covering flexible fire-resistant covering material 3 and the boundary between the outer wall material and the flexible fire-resistant covering material covering the floor member 22 of the building unit 2 on the upper floor are in close contact with each other. Floor beam 22 of building unit 2 and building unit 2 on the upper floor
Is completely covered with a material having good fire resistance, and a floor beam 22 and a ceiling beam 23 having extremely good fire resistance are obtained.

At the boundary between the building unit 2 having no outer wall material 4 and the adjacent building unit 2, as shown in FIG. 1, a rock wool is formed between the floor beam 22 and the adjacent floor beam 22. A heat insulating material 89 is attached, and the flexible fireproof covering material 3 attached to the floor beam 22 of the building unit 2 and the flexible fireproof covering material 3 attached to the floor beam of the adjacent building unit 2 are overlapped with each other. The floor material 26 is mounted thereon. Also, as shown in FIG.
3 is connected to the flexible fire-resistant covering material 3 attached to the ceiling beam 23 of the adjacent building unit 2 by the connecting member 39, and a plywood ceiling material 65 is provided below the flexible fire-resistant covering material 3 attached to the ceiling beam 23 of the adjacent building unit 2. Attach.

Then, the floor beam 22 of the building unit 2 on the upper floor is
Is covered with the flexible fire-resistant covering material 3 and the lower surface of the ceiling material 23 of the building unit 2 on the lower floor is covered with the flexible fire-resistant covering material 3, so that the floor beams 22 and the ceiling beams 23 with good fire resistance are obtained. .
After a heat insulating material 86 is laid over the boundary between the roof panel 8 and the adjacent roof panel 8, a waterproof sheet 85 made of a vinyl chloride resin sheet is attached to the entire upper surface of the roof panel 8. After that, when other finishing is performed, the unit building 1 is completed.

(Embodiment 2) FIG. 8 shows another embodiment of the present invention, in which (a) is an explanatory view showing a state in which a pipe is passed through a through hole provided in a flexible fire-resistant coating material. ) Is an explanatory diagram showing a state in which the inlet of the pipe is plugged with heat insulating material,
(C) is an explanatory view showing a state in which a nonflammable adhesive tape is attached. In the second embodiment shown in FIG. 8, a method and a structure for passing a pipe such as an electric cable through an existing unit building, for example, the unit building manufactured in the first embodiment will be described.

First, as shown in FIG.
A through hole 99a through which a flexible, refractory coating material 3a covering the 3a passes through a pipe 9a of a metal cable coated with a fire-resistant material.
Is provided. Next, as shown in (b), after passing an electric wire 93a through the pipe 9a, a heat insulating material (for example, rock wool) 91a having good fire resistance is packed in the inlet and the outlet. And close the doorway. Next, through hole 9
A non-combustible adhesive tape 32a is wound around the outer peripheral surface of the pipe 9a from the flexible fire-resistant coating material 3a at the peripheral edge of 9a to close the gap between the flexible fire-resistant coating material 3a and the pipe 9a.

In this way, the construction is extremely simple, there is no gap between the flexible refractory coating material 3a and the pipe 9a, and therefore no flame enters from there between and the ceiling beam with good fire resistance is provided. 23a.

[0046]

According to the first aspect of the present invention, a fire-resistant outer wall material is attached to the outdoor surface of the beam, and the indoor side of the beam is covered with a flexible fire-resistant coating material. Since one side edge is sandwiched between the beam and the outer wall material and fastened, the outdoor side and the indoor side of the beam are covered with a material having good fire resistance, and the beam has good fire resistance. Further, as described above, the construction is extremely simple because one side edge portion of the refractory coating material is fastened and fastened between the beam and the outer wall material.

According to the second aspect of the present invention, a plurality of small beams are inserted into the beam at predetermined intervals, and the small beams are connected to the beam via the mounting plate. A beam between the mounting plate and the next mounting plate or the next beam with a flexible refractory coating of approximately the same length as that between the plate and the next mounting plate or the next beam that is provided at a predetermined interval. Is covered, only the indoor side of the beam between the mounting plate and the next mounting plate or the next beam is covered with a flexible fire-resistant coating material. As described above, the gap between the coating material and the adjacent flexible fire-resistant coating material is extremely small, so that the flexible fire-resistant coating material can be easily closed by only slightly extending it.

According to the third aspect of the present invention, the beam is covered with a flexible refractory covering material, a through hole is provided in the flexible refractory covering material, a pipe is passed through the through hole, and a peripheral portion of the through hole is provided. Non-combustible adhesive tape is attached to the outer peripheral surface of the pipe from the flexible fire-resistant coating material, and the gap between the flexible fire-resistant coating material and the pipe is closed. There is no gap, and therefore no flame enters from this interval, and the beam has good fire resistance.

Then, a through hole is provided in the flexible refractory coating material,
After the pipe is passed through the through hole, the nonflammable adhesive tape is simply stuck to the outer peripheral surface of the pipe from the flexible fire-resistant coating material at the periphery of the through hole, so that the construction is extremely simple.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory view showing one embodiment of the present invention and showing a part of a vertical cross section of a floor beam portion of a unit building.

FIG. 2 is an explanatory view showing a part of a vertical cross section of a boundary portion between a ceiling portion and a roof panel of a unit building.

FIG. 3 is an explanatory diagram showing a skeleton of a building unit.

FIG. 4 is a diagram showing a state in which a flexible fireproof covering material is attached to floor beams of a building unit, wherein (a) is a state in which a flexible fireproof covering material is attached to a floor substrate;
(B) is an explanatory view showing a state in which a floor material is mounted on a floor base material, (c) is an explanatory view showing a state in which a flexible fireproof covering material is temporarily fixed to a floor beam, and (d) is an explanatory view. It is a side view which shows the floor beam to which the flexible refractory covering material was attached.

FIG. 5 shows a state in which a flexible fireproof covering material is attached to a ceiling beam of a building unit. (A) shows a state in which a receiving plate is attached to a floor beam, and a double-sided adhesive tape is attached to the receiving plate. (B) is an explanatory view showing a state in which a flexible fireproof covering material is attached, and (c) is an explanatory view showing a state in which a connecting portion between a ceiling beam and a ceiling beam is covered with the fireproof covering material. FIG. 4D is an explanatory view showing a state in which a flexible fireproof covering material is temporarily fixed to a ceiling beam, and FIG. 4E is a side view showing a ceiling beam to which a flexible fireproof covering material is attached.

FIG. 6 is an explanatory diagram showing a state in which an outer wall material is attached to a building unit.

FIG. 7 is an explanatory diagram showing a unit building.

FIG. 8 is a view showing another embodiment of the present invention, wherein (a) is an explanatory view showing a state in which a pipe is passed through a through hole provided in a flexible fire-resistant coating material, and (b) is a heat-insulating inlet of the pipe. FIG. 4 is an explanatory view showing a state where the material is plugged, and FIG. 3 (C) is an explanatory view showing a state where a nonflammable adhesive tape is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit building 2 Building unit 21 Column 22 Floor beam 23 Ceiling beam 231 Ceiling beam 235 Mounting plate 3 Flexible fireproof covering material 32 Nonflammable adhesive tape 4 Outer wall material 5 Inner wall panel 7 Leaf spring

Claims (3)

[Claims] 1. A fire-resistant structure of a unit building in which a plurality of building units are assembled, wherein the building unit has a skeleton in which columns and beams are formed in a substantially box shape,
A fire-resistant outer wall material is attached to the outdoor surface of the beam, and the indoor side of the beam is covered with a flexible fire-resistant coating material. One side edge of the fire-resistant coating material is sandwiched between the beam and the outer wall material and fixed. The fire-resistant structure of the unit building, which is characterized in that: 2. A fire-resistant structure of a unit building in which a plurality of building units are assembled, wherein the building unit has a skeleton in which columns and beams are formed in a substantially box shape,
A plurality of small beams are provided at predetermined intervals to the opposed beams, and the small beams are connected to the beams via the mounting plate,
The mounting plate attached to the small beam, and a mounting plate with a flexible fire-resistant coating material having a length substantially equal to that between the adjacent mounting plate or the adjacent beam inserted at a predetermined interval from the mounting plate. A fireproof structure for a unit building, wherein a beam between an adjacent mounting plate or an adjacent beam is covered. 3. A fireproof structure of a unit building in which a plurality of building units are assembled, wherein the building unit has a skeleton in which columns and beams are formed in a substantially box shape,
The beam is covered with a flexible refractory cladding, a hole is provided in the flexible refractory cladding, a pipe is passed through the hole,
A unit building characterized in that a non-combustible adhesive tape is attached to the outer peripheral surface of the pipe from the flexible fire-resistant coating material at the periphery of the through hole, and the gap between the flexible fire-resistant coating material and the pipe is closed. Fireproof structure.