JP3195242B2 - Fireproof construction method for unit building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof construction method for a unit-type building, and more particularly to a unit-type fireproofing method for covering a floor beam and a ceiling beam of a building unit, which is a component of the unit-type building, collectively. The present invention relates to a fireproof construction method for buildings.

[0002]

2. Description of the Related Art In recent years, unit construction methods for constructing buildings such as houses by combining a plurality of building units have been frequently used. If such a unit building exceeds a certain height or is used for apartments, etc.,
According to the law, the framework of a unit building must be a fire-resistant structure in which a fire-resistant coating material is coated.

[0003] Conventionally, as a method for fire-resistant coating a frame of a building unit, a fireproof construction method for a unit house described in JP-A-64-39447 is known. The fireproof construction method disclosed in the publication discloses a method in which a soft refractory filler is interposed between an upper-floor building unit and a lower-floor building unit. The lower part of the covering material attached to the ceiling beam of the building unit on the floor is continuous. The upper and lower portions of these covering materials form a fireproof space for accommodating the floor beam and the ceiling beam, and the floor beam and the ceiling beam are accommodated in the fireproof space and covered with fireproof.

[0004] According to this, most of the work of coating the fire-resistant coating material can be performed in the factory, and the work of separately coating the floor and ceiling beams with the fire-resistant coating material at the construction site can be omitted. There are advantages.

[0005]

However, in the conventional refractory construction method, the lower portion of the upper portion of the coating material and the upper portion of the lower portion of the coating material are formed of a calcium silicate plate which is a hard surface material. If these units are misaligned when the upper floor building unit is placed on the lower floor building unit, the upper cladding and lower cladding may not be connected accurately via the soft refractory filler, In such a case, the fireproof space becomes incomplete, and the expected fireproof performance cannot be obtained.

For this reason, in the above-mentioned prior art, the upper portion and the lower portion of the covering material are each formed by laminating two calcium silicate plates, and the thickness thereof is ensured. There is a problem that such a special structure must be used in order to obtain a completely sealed state.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has as its object to include ALC (lightweight cellular concrete) plates for floor beams of building units on the upper floor and ceiling beams of building units on the lower floor. If the building units on the upper floor and the building units on the lower floor are displaced from each other when they are collectively stored in the constructed fireproof space and fireproof covered, a special structure such as bonding two calcium silicate boards together is adopted. It is an object of the present invention to provide a fireproof construction method for a unit-type building, which can form a completely closed fireproof space without any problem.

[0008]

SUMMARY OF THE INVENTION The present invention provides an upper refractory space surrounding a floor beam of an upper floor building unit and including an ALC plate attached to the upper floor building unit. A lower refractory space surrounding the ceiling beam of the building unit and continuous with the upper refractory space is formed, and the upper refractory space and the lower refractory space form a closed refractory space in which the floor beam and the ceiling beam collectively house. A fireproof construction method for a unit-type building, wherein a soft fireproof covering material is arranged on the upper side of the fireproof space below the fireproof space, and the upper-floor building unit and the lower-floor building unit are joined. A soft refractory material is brought into contact with the lower surface of the ALC plate, and the contact makes the lower part of the refractory space and the upper part of the refractory space continuous.

According to the present invention, a soft refractory covering material constituting the lower part of the refractory space is brought into contact with the surface of the ALC plate constituting the upper part of the refractory space to make the upper part of the refractory space and the lower part of the refractory space continuous. A closed fireproof space for collectively storing floor beams and ceiling beams is formed. That is, since the soft refractory coating material is in contact with the ALC plate having a large area, the upper refractory space and the lower refractory can be used even when the lower building unit and the upper building unit are displaced and the assembly error is large. The space can be reliably connected, and as a result, a completely closed fireproof space is formed.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a fireproof construction method for a unit-type building according to the present invention.

FIGS. 1 to 4 show a first embodiment of the present invention. FIG. 1 is a schematic perspective view of a building unit to which the present invention is applied. As shown in FIG. 1, a building unit 10, which is a component of a unit-type building, has four pillars 12 erected, a ceiling beam 14 and a floor erected between upper and lower ends of these pillars 12. A frame is formed in a rectangular parallelepiped shape by the beam 16. The building unit 10 is assembled in a factory, and interior and exterior materials are attached inside and outside.

FIG. 2 is a sectional view of a main part showing a floor beam of a lower-floor building unit. As shown in FIG. 2, a contact member 18 is joined to the floor beam 16 of the upper-floor building unit 10A on the opening side of the floor beam 16, and the contact member 18 attaches the inner surface 16A to the floor beam 16.
Are formed. The contact member 18 includes a bracket 2
0 is attached, and this bracket 20 has an ALC version 2
2, a floor panel 21 composed of a joist 26 and a floor material 28 is supported.

[0013] The ALC plate 22 has an inner surface 16A.
And is located below the upper floor level of the upper-floor building unit 10A.
Together with 4 etc., it constitutes the upper part of the fireproof space in which the floor beams 16 of the lower-floor building unit 10A are arranged. Further, a refractory coating material 24 such as a calcium silicate plate is attached to the inner side surface 16A, whereby the inner side surface 16A is coated with a fireproof coating.

FIG. 3 is a sectional view of a main part showing a ceiling beam of an upper-floor building unit. As shown in FIG. 3, a contact member 30 is also attached to the opening side of the ceiling beam 14 of the lower-floor building unit 10 </ b> B, and the ceiling member 14 forms an inner side surface 14 </ b> A with the contact member 30. A U-shaped through member 31 is attached to the inner side surface 14A by a stepped bolt 33 with its opening facing the inside of the lower-floor building unit 10B, and between the inner side surface 14A and the through member 31. A fixed gap is formed along the ceiling beam 14.

A soft refractory covering material 32 is attached to the gap formed between the inner side surface 14A and the through member 31 to cover the backing member 14A with fire, and the lower surface 14B of the ceiling beam 14 is covered with the refractory covering material. By the intermediate part 32B of 32,
Further, a part of the outer web surface 14C is coated with a fireproof coating by a tip portion 32C.

On the other hand, the upper end 32A of the refractory coating material 32
Extends from between the inner side surface 14A and the through member 31 toward the inside of the lower-floor building unit 10B. Further, a ceiling member 36 such as a gypsum board is attached to the through member 31 via a small beam 34, and a ceiling surface is formed in the lower floor building unit 10B.

For example, a flex guard (trade name, manufactured by Nichias Co., Ltd.) is used as the fireproof covering material 32. The flex guard is made of rock wool, ceramic fiber,
It is composed of a composite material in which a nonwoven fabric and a turtle wire mesh are laminated.

FIG. 4 shows the structure of FIG.
It is principal part sectional drawing which shows the state in which the upper-floor building unit was laminated | stacked. As shown in FIG.
A and a lower layer building unit 10B have a flexible fire-resistant coating material 32 interposed therebetween with its upper end abutting on the lower surface of the ALC plate 22, whereby the ALC plate 22 and the fire-resistant coating material 32 Is continuous.

Here, the refractory coating material 32 has a large area A
Since it is in contact with the lower surface of the LC plate 22, even when the upper-floor building unit 10A is displaced on the lower-floor building unit 10B due to its assembling error, the fireproof covering material 32 is reliably brought into contact with the ALC plate 22. Therefore, the refractory coating material 32 and the ALC plate 22 can be reliably connected.

A refractory coating material 40 is provided between adjacent floor beams 16 of the upper-floor building unit 10A, and both ends thereof are continuous with the upper end of the refractory coating material 24.
The upper part 35 of the fireproof space in which the floor beams 16 are arranged is configured. On the other hand, between the adjacent lower-floor building units 10B, the front end portions 32C of the fireproof covering material 32 abut against each other, thereby forming a fireproof space lower portion 37 in which the ceiling beam 14 is disposed.

That is, the floor beam 1 of the upper-floor building unit 10A
6 and the ceiling beam 14 of the lower floor building unit 10B are ALC
Plate 22, upper part of refractory space 3 composed of refractory coating materials 24, 40
5 and a lower part 37 of a refractory space made of a soft refractory covering material 32.
And are collectively housed in the closed fireproof space 38 and covered with fireproof.

The procedure for constructing a fireproof structure in a unit-type building constructed using the above-mentioned upper-floor building unit 10A and lower-floor building unit 10B is as follows.

First, at the factory, as shown in FIG. 2, a floor panel 21 is supported on a floor beam 16 of an upper-floor building unit 10A via a bracket 20, and a fireproof coating material 24 is attached. A fire-resistant coating is applied in advance with the coating 22 and the fire-resistant coating material 24. The refractory coating 24 may be attached to the side of the joist 26 before the floor panel 21 is arranged. On the other hand, the ceiling beam 1 of the lower floor building unit 10B
A refractory coating material 32 is attached in advance also between the inner surface 14A and the through member 31 of 4 to cover the inner surface 14A, the lower surface 14B, and the web surface 14C in advance.

Then, the upper building unit 10A and the lower building unit 10B are transported to the construction site, and the upper building unit 10A is arranged on the lower building unit 10B. As a result, the lower surface of the ALC plate 22 of the upper-floor building unit 10A has a flexible fire-resistant covering material 32 as shown in FIG.
Abuts on the upper end portion 32A, whereby the ALC plate 22 and the refractory coating material 32 are connected.

At this time, since the refractory coating material 32 is in contact with the lower surface of the ALC plate 22 having a large area, even if the assembly error between the lower building unit 10B and the upper building unit 10A is large, the refractory coating material 32 is used. 32 and the ALC plate 22 can be reliably connected.

The lower-floor building unit 1 already arranged
0B and the upper-floor building unit 10A, and the lower-floor building unit 10B and the upper-floor building unit 10A are disposed adjacent to each other. The space between the refractory coating materials 24 of the unit 10A is made continuous. As a result, a refractory space upper portion 35 including the ALC plate 22 and the refractory coating materials 24 and 40 is formed, and the floor beams 16 are disposed in the refractory space upper portion 35.

On the other hand, two adjacent lower-floor building units 1
Regarding 0B, the tip portions 32C of the refractory covering material 32 abut only by arranging the lower-floor building units 10B adjacent to each other,
As a result, a fireproof space lower portion 37 in which the adjacent ceiling beams 14 are collectively arranged is configured. For this reason, the work for forming the fireproof space lower part 37 at the construction site becomes unnecessary, and the amount of work is reduced. Thereafter, a ceiling member 42 is laid between adjacent lower-floor building units 10B to connect the ceiling members 36 of the adjacent lower-floor building units 10B.

With the above structure, the upper-floor building unit 10
A floor beams 16 and ceiling beams 14 of the lower building unit 10B
Are collectively stored in a closed fireproof space 38 formed by a fireproof space upper portion 35 and a fireproof space lower portion 37, and are thereby covered with fireproof.

The ALC plate 22 arranged on the upper-floor building unit 10A is disposed at a position lower than the level of the upper surface of the floor of the upper-floor building unit 10A by the bracket 20. Flooring 28
Are attached to form a floor panel 21. For this reason, compared with the case where a floor material is directly adhered to the ALC plate 22 to form the floor, the floor can have elasticity, and the impact during walking can be reduced.

As described above, in the present embodiment, the upper end portion 32A of the refractory coating material 32 is brought into contact with the lower surface of the ALC plate 22 arranged in the upper-floor building unit 10B, whereby the upper refractory space 35 and the lower refractory space are provided. 37 is continuous. For this reason, even when the assembly error between the lower-floor building unit and the upper-floor building unit is large, the upper part of the fireproof space 35
And the refractory space lower part 37 can be reliably connected,
It becomes possible to form a closed fireproof space 38 that is completely closed.

Next, a second embodiment of the present invention will be described.

FIG. 5 is a cross-sectional view of a principal part showing a stacked state of an upper floor building unit and a lower floor building unit according to the second embodiment. Here, the same members as those of the above-described first embodiment are denoted by the same reference numerals, and overlapping description will be omitted.

In FIG. 5, a contact member 44 attached to the opening of the ceiling beam 14 of the lower-floor building unit 10C is formed to be horizontally long, and the lower part 45 of the refractory space in which the ceiling beam 14 is arranged is formed by a refractory coating of a calcium silicate plate. The first embodiment differs from the first embodiment in that members 46 and 48 and a soft refractory covering material 50 are used.

That is, a contact member 44 is attached to the opening side of the ceiling beam 14, the contact member 44 extends inside the lower-floor building unit 10 C, and a side surface 44 A of the contact member 44. A refractory coating 46 is attached. In addition, the refractory coating 46 is made of a soft refractory coating 50.
Is mounted, one end of which is an upper floor building unit 10.
A contacts the lower surface of the ALC plate 22 of A, whereby the refractory coating 46 and the ALC plate 22 are connected.

Further, a refractory covering material 48 is provided between the adjacent lower-floor building units 10C in contact with the lower end of the refractory covering material 46, thereby covering the lower surface 14B of the ceiling beam 14 with the refractory coating. As a result, the refractory coating materials 24, 40,
A closed fireproof space 52 for collectively housing the ceiling beams 14 and the floor beams 16 is provided by an upper fireproof space 35 made of the ALC plate 22 and a lower fireproof space 45 made of the fireproof covering materials 46 and 48 and the soft fireproof covering material 5. Be composed.

Here, the refractory coating materials 24, 46, 50, A
Since the attachment of the LC plate 22 is performed at the building unit manufacturing plant, the work on the construction site requires the refractory coating materials 40, 48.
It only needs to be installed, which contributes to reducing the amount of work at the construction site.

FIG. 6 is a cross-sectional view of a principal part showing a stacked state of an upper-floor building unit and a lower-floor building unit according to the third embodiment. In the second embodiment described above, the soft refractory coating material 50 is attached to the upper end of the refractory coating material 46 so that
5, the fire-resistant coating material 54 is attached to the contact member 30 as shown in FIG. 6, and a receiving portion 54A is provided on the fire-resistant coating material 54. The ALC plate 22 is provided on the receiving portion 54A.
A soft refractory covering material 56 in contact with the lower surface of the refractory space may be fixed to form a lower refractory space 58, thereby forming a closed refractory space 60 including the upper refractory space 35 and the lower refractory space 58.

[0038]

As described above, according to the present invention,
Since the soft refractory coating material is in contact with the ALC plate having a large area, a closed refractory space in which the upper refractory space and the lower refractory space are connected continuously can be formed. As a result, even when the assembly error between the lower-floor building unit and the upper-floor building unit is large, a predetermined fireproof performance is ensured.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a building unit according to a first embodiment.

FIG. 2 is a sectional view of a main part showing a floor beam of the upper floor building unit of the first embodiment.

FIG. 3 is a sectional view of a main part showing a ceiling beam of the lower floor building unit of the first embodiment.

FIG. 4 is a cross-sectional view of a main part showing a stacked state of an upper-floor building unit and a lower-floor building unit according to the first embodiment.

FIG. 5 is a cross-sectional view of a main part showing a stacked state of an upper-floor building unit and a lower-floor building unit according to the second embodiment.

FIG. 6 is a cross-sectional view of a main part showing a stacked state of an upper-floor building unit and a lower-floor building unit according to the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Building unit 10A Upper-floor building unit 10B 10C Lower-floor building unit 22 ALC version 24 40 48 54 Fireproof covering material 26 Joist 28 Floor material 32 50 56 Soft fireproof covering material 35 Upper fireproof space 37 45 58 Lower fireproof space 38 52 60 Closed fireproof space

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04B 1/94 E04B 1/348

Claims (1)

(57) [Claims] 1. An upper part of a refractory space surrounding a floor beam of an upper floor building unit and including an ALC plate attached to the upper floor building unit, and surrounding a ceiling beam of a lower floor building unit. And a fireproof construction method for a unit-type building in which a fireproof space lower part which is continuous with the fireproof space upper part is formed, and a closed fireproof space is formed in which the floor beams and the ceiling beams are collectively housed in the fireproof space upper part and the fireproof space lower part. A soft refractory covering material is arranged on the upper side of the refractory space below the refractory space, and the upper refractory building unit and the lower resilient building unit are joined to each other, so that the soft refractory material is converted to the ALC plate. A fireproof construction method for a unit-type building, wherein the fireproof space is made to abut on a lower surface, and the fireproof space is connected to the fireproof space lower part and the fireproof space upper part.