JPH07331765A - Fire-resistive covering of unit type building - Google Patents

Abstract

PURPOSE:To facilitate the handling of a soft fire resistive material and to improve working efficiency. CONSTITUTION:A soft fire-resistive material 40 along from a ceiling beam 3 of a building unit 1 for a lower stair to an external wall material is divided into a first fire-resistive covering material 41 to cover the ceiling beam 3 and a second fire resistive covering material 42 connected to the external wall material 6 from the lower surface of the ceiling beam 3. The first fire-resistive covering material 41 is installed on the ceiling beam 3 through a fastening fitting 20, and the first fire-resistive covering material 41 and the second fire- resistive covering material 42 are connected to each other by way of binding wire gauzes 43 in the neighbourhood of their end parts respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof coating method for a unit type building, which is constructed by combining a plurality of building units produced in a factory at a construction site.

[0002]

[Background Art] A unit-type building such as a house is built by combining a plurality of building units produced at a factory at a construction site. This building unit has four pillars that are erected in four corners, It is provided with a framework composed of four ceiling beams and floor beams that connect the upper ends and the lower ends of these columns to each other, and are formed by attaching an inner wall, an outer wall, a ceiling surface material, a floor surface material, etc. to this frame. ing. For example, when building an apartment house in such a unit type building, fire resistance is legally required for the apartment house. For this reason, the frame members of the columns and beams of the building unit, which is a component of the unit-type building, are covered with the fireproof member. A soft refractory material may be used as the refractory member for reasons such as easiness of shape change.In this case, the soft refractory material has one end attached to the beam and the other end extending from the beam to the outer wall. It was connected to this outer wall.

[0003]

In the above fireproof coating method, the vertical dimension of the soft fireproof material is long because it extends from the beam to the portion connecting to the outer wall.
Therefore, there is a problem that it is difficult to handle and the work efficiency of the fireproof coating is poor.

It is an object of the present invention to provide a fireproof coating method for a unit-type building, in which a soft fireproof material can be easily handled and work efficiency can be improved.

[0005]

A fireproof coating method for a unit type building according to the present invention is a fireproof coating method for a unit type building, wherein a frame material of a building unit constituting a unit type building is covered with a soft fireproof material. The refractory material is divided into first and second refractory coating materials, the first refractory coating material is attached to the frame material before the outer wall material is attached to the frame material, and then the first fire resistant coating material is attached. A member is connected to the second refractory covering that is joined to the outer wall member attached to the frame member.

In this fireproof coating method for a unit building, one end portion of the first fireproof coating material is fixed to a fastener having an engaging portion capable of engaging with the frame material and the other end portion is free. One end of the second refractory coating material may be connected to this free end.
The surface of the refractory coating material of No. 2 may be surrounded by a wire mesh, and these fire resistant coating materials may be connected by binding the wire mesh with a binding tool.

[0007]

In the present invention as described above, the soft refractory material is
Since the first refractory covering is attached to this frame before the outer wall is attached to the frame, it is possible to shorten the vertical dimension of the soft refractory and use it. The soft refractory material can be easily handled and work efficiency can be improved.

In the present invention, when the first and second refractory coating materials are connected by binding the wire nets with a binding tool, if the wire nets in the vicinity of the ends of the respective fire resistant coating materials are tied together, each fire resistance can be improved. Since the covering material can be connected, the two fireproof covering materials can be easily connected.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. A building unit 1 is shown in FIG. 1, and this building unit 1 includes four pillars 2 that are erected at four corners and four pillars 2 that connect upper ends and lower ends of the pillars 2 to each other. A substantially box-shaped frame 5 including a ceiling beam 3 and a floor beam 4 is provided, and as shown in FIG. 5, an inner wall material, an outer wall material 6, a ceiling surface material 7, a floor surface material, and the like are provided in the frame 5. It is formed by mounting. And unit type building 10
Is such a plurality of building units 1 for the lower floor,
In addition, it will be built for the upper floor by combining it on site.

Such a unit-type building 10 is, for example, an apartment house, and therefore, the ceiling beam 3 which is a frame member of the building unit 1 for the lower floor is provided with a fastener 20 shown in FIG. As shown in FIGS. 3 and 5, a soft refractory material 40 such as flex guard (trade name; manufactured by Nichias Corporation) is coated. Here, the ceiling beam 3 is a channel material having an upper flange portion 3A. In FIG. 5, the soft refractory material 40 is formed of a first refractory coating material 41 that covers the ceiling beam 3 and a vertical dimension shorter than the refractory coating material 41, and extends from the lower surface of the ceiling beam 3 to the outer wall material 6. It is divided into a second refractory covering material 42 connected to the outer wall material 6. One end 41A of the first fire-resistant covering material 41 is connected to the fastener 20, and the other end 41B is a free end before being connected to the second fire-resistant covering material 42, as shown in FIG. There is.

As shown in FIG. 3, wooden beams 9 are arranged at predetermined intervals in the longitudinal direction of the long-side ceiling beam 3 via brackets 8. Therefore, the first fireproof coating material 41 is provided.
Has a length dimension that is divided so as not to interfere with these beam members 9. The first fire-resistant coating material 41 is attached to the ceiling panel after the ceiling panel is formed by the long side ceiling beams 3 and the beam 9 and the like.

As shown in FIG. 4, the other end 42B of the second refractory covering material 42 is previously attached to the outer wall member 6 with nails 46, and the outer wall member 6 is attached to the fixture 15 of the frame 5. Then, the one end portion 42A is positioned on the lower surface of the ceiling beam 3. The surfaces of these first and second refractory coating materials 41 and 42 are surrounded by wire mesh 43,
Therefore, these fireproof coating materials 41 and 42 can be easily joined by binding the wire nets 43 near the ends thereof with the binding tool 44. In addition, the first horizontally adjacent
The fireproof covering materials 41 can be joined in the lengthwise direction by binding the wire nets 43 near the ends thereof with the binding tool 44. Since the one end portion 42A of the second refractory covering material 42 is located on the lower surface of the ceiling beam 3, it does not interfere with the beam 9 and therefore its length may be the same as that of the ceiling beam 3. However, when the length dimension is the same as that of the first fire-resistant coating material 41, the tying member 4
4, the length directions can be combined.

As shown in FIG. 5, the floor of the building unit 1 for the upper floor has a refractory floor material 11 made of ALC (high-temperature high-pressure steam curing light-weight aerated concrete) supported by a floor beam 4. And a hard refractory material 12 or the like arranged on the refractory floor material 11 to cover the floor beams 4 and the like, and further, in the gaps between the outer wall materials 6 and 6 of the upper and lower building units 1 and 1,
The backup material 13 and the caulking material 14 are embedded so that the ceiling beams 3 and floor beams 4, which are frame members of the upper and lower floor building units 1 and 1, have a fireproof structure.

As shown in FIG. 2, the fastener 20 has a first flat surface portion 21, a second flat surface portion 22 lower than the flat surface portion 21, and a vertical portion 23 connecting these flat surface portions 21 and 22. And is formed by bending a metal plate by pressing, for example. An engaging portion 25 that engages with the upper flange portion 3A is formed on the first flat surface portion 21, and a connecting portion 30 to which the first fireproof coating material 41 is connected is formed on the second flat surface portion 22. ing. Such a fastener 20 extends along the longitudinal direction of the ceiling beam 3 and has the same dimension as the beam 9;
The fireproof coating material 41 is formed to have substantially the same length dimension. Note that, for example, spring steel or the like is preferably used as the metal plate.

As shown in FIGS. 2 and 5, the engaging portion 25 is composed of an upper tongue piece 26 and a lower tongue piece 27, and the upper tongue piece 26 is connected to the first flat surface portion 21. 1st leaving 27A
When a part of the flat surface portion 21 is depressed into a square shape, the flat surface portion 21 is formed by the first flat surface portion 21 excluding the depressed portion, and the lower tongue piece 27 is formed by the depressed square portion. The distance between the upper tongue piece 26 and the lower tongue piece 27 is
The connecting portion 27A, that is, the base end portion 27A, is formed to be slightly wider than the thickness dimension of the upper flange portion 3A, and between the tip portion 27B of the lower tongue piece 27 and the upper tongue piece 26, an upper portion is formed. It is formed slightly narrower than the thickness dimension of the flange portion 3A. Therefore, when the fastener 20 is pushed into the flange portion 3A of the ceiling beam 3, the spring force of the tip portion 27B increases the force for sandwiching the flange portion 3A, so that the fastener 20 can be attached with one touch. And the fastener 20
Is hard to come off.

The connecting portion 30 is composed of a plurality of lower claw portions 31 and upper claw portions 32, and these claw portions 31 and 32 alternate in the longitudinal direction of the fastener 20 as shown in FIG. It is located in. The lower claw portion 31 is formed by erecting a triangular protrusion from the back side of the second flat surface portion 22 and, as shown in FIG. 5, digs into the back surface of the one end portion 41A of the first fireproof coating material 41. It has become. The upper side claw portion 32 is a rectangular pressing portion 32A that is erected from the back side of the second flat surface portion 22.
And the pressing portion 32A has a triangular protruding portion 32B protruding from the outside. Then, when the first refractory covering material 41 is placed on the second flat surface portion 22 and the pressing portion 32A is tilted forward, the protruding portion 32B becomes the first refractory covering material 4.
It is designed to bite into the surface of 1.

At the outer end portion of the second flat surface portion 22 as described above, it extends along the longitudinal direction of the fastener 20 and the bending direction (downward direction) of the first fireproof coating material 41. A bent portion 24 that is bent in the direction of the arrow is provided. The bent portion 24 connects the first fire-resistant coating material 41 and the connecting portion 30 of the fastening device 20, and then connects the first fire-resistant coating material 41 to the lower side in order to maintain the posture of the first fire-resistant coating material 41. It serves as a ruler for folding the sheet in a straight line and is easy to bend along the bent portion 24. Such a fastener 20 is, for example, a transfer press machine, and firstly, the first and second plane portions 21 and 21.
2, the vertical portion 23 and the bent portion 24 are bent, and then the engaging portion 25 and the connecting portion 30 are processed to be integrally molded.

Next, the procedure for attaching the soft refractory material 40 to the building unit 1 will be described. For example, the fastener 20 is integrally molded by a transfer press machine or the like, and the first fireproof coating material 41 is attached to the fastener 20. At this time, the one end portion 41A of the first fire-resistant coating material 41 is pressed against the pressing portion 32A, and the back surface of the first fire-resistant coating material 41 is made to bite into the lower claw portion 31, and then the pressing portion 32A is moved forward. Defeat it. Then, the protrusion 32 </ b> B of the upper claw portion 32 bites into the surface of the one end 41 </ b> A of the first fire-resistant coating material 41, whereby the first fire-resistant coating material 41 is connected to the fastener 20.

Next, a beam 9 is provided on the long-side ceiling beam 3 via a bracket 8 to manufacture a ceiling panel, and then the upper and lower tongue pieces 26 are set with the other end 41B of the first fireproof coating material 41 as a free end. , 27 against the upper flange portion 3A of the ceiling beam 3,
The upper flange portion 3A is sandwiched between these tongue pieces 26 and 27, and the fastener 20, in other words, the first fireproof coating material 41,
Attach to the ceiling beam 3 of the ceiling panel. Then, the bracket 8 is sandwiched between the left and right ends of the plurality of first refractory coating materials 41 in the longitudinal direction, and the wire nets 43 adjacent to each other are bound by a binding tool 44 so that the length of each refractory coating material 41 increases. Combine directions. After that, such a ceiling panel is assembled with a gable panel including short-side beams and columns, and a floor panel including long-side floor beams and joists and the like to form a skeleton 5, and The outer wall member 6 to which the second refractory covering material 42 is previously attached is attached.

After this, the other end 4 of the first refractory coating material 41 is formed.
1A is brought into contact with one end portion 42A of the second refractory coating material 42, and the wire nets 43 near each end portion are bound and bound by a binding tool 44 while confirming the mutual positional relationship. Next, the arrangement of the plurality of lower-floor building units 1 is completed, and the upper-floor building unit 1 to which the refractory floor material 11 and the like have been previously attached is placed on the unit 1 to build the unit-type building 10. . At this time, the upper surface of the first refractory covering material 41 is crushed by the refractory floor material 11, and the backup material 13 and the caulking material are provided in the gaps between the outer wall materials 6 and 6 of the upper and lower building units 1 and 1. 14 is embedded.

According to this embodiment as described above, the following effects can be obtained. That is, since the soft refractory material 40 is divided into the first and second refractory covering materials 41 and 42, the soft refractory material 40 does not become long, and as a result, it is easy to handle and the working efficiency can be improved. In addition, the first refractory coating material 41
Since the connection between the second refractory covering 42 and the second refractory covering 42 is performed in the vicinity of the lower surface of the ceiling beam 3, the connecting position of the both 41, 42 is set to the bracket 8.
Further, since it does not interfere with the beam 9, the connection work can be easily performed. Further, the first and second refractory coating materials 41 and 42 are surrounded by the wire mesh 43, and the respective refractory coating materials 41 and 42 are connected to each other, the first refractory coating materials 41 adjacent to each other, and the second refractory coating material. The 42 can be joined in the longitudinal direction by binding the wire nets 43 in the vicinity of the respective ends with the binding tool 44, so that the work of joining the fireproof coating materials can be facilitated and ensured.

Furthermore, the fastening device 20 includes the upper and lower tongue pieces 2.
If the upper and lower tongue pieces 26 and 27 are pushed into the upper flange portion 3A of the ceiling beam 3, the tongue piece 26 is provided with the engaging portion 25 composed of 6, 27 and the connecting portion 30 to which the first fireproof coating material 41 is connected. ，
Since the upper flange portion 3A is sandwiched by 27, it can be attached with one touch, which facilitates the attachment of the first fireproof coating material 41. In addition, the fastener 20 includes
Since the lower claw portion 31 and the upper claw portion 32 are formed and these claw portions 31 and 32 are triangular protrusions,
It is easy to bite into the refractory coating material 41 of the
The fireproof coating material 41 and the fastener 20 are securely connected without disconnecting.

Further, since the bent portion 24 is formed on the fastening member 20, the posture of the first fire resistant coating material 41 is changed after connecting the first fire resistant coating material 41 and the fastening device 20. When the refractory covering 41 is bent downward to hold it, the bent portion 2
The first fire-resistant covering material 4 can be easily pressed by being pressed against the bending surface 4 and is partially protected by the bent portion 24 after the bending.
The posture of 1 can be held. Furthermore, since the fastener 20 is integrally formed by pressing the metal plate including the engaging portion 25 and the connecting portion 30, the fastener 20 can be manufactured easily and accurately. Further, since the fastener 20 is formed in the length dimension between the beam 9, the weight thereof can be lightened, and therefore, the total weight does not become heavy even if the first fireproof coating material 41 is connected. It has the effect of being easy to handle.

The present invention is not limited to the above-mentioned embodiments, but includes the following modifications as long as the object of the present invention can be achieved. For example, in the above-described embodiment, the fastener 20 includes the engaging portion 25 and the connecting portion 30.
Although the metal plate is integrally formed by press working including the above, the present invention is not limited to this, and the first and second plane parts 21 and 22 and the vertical part 23 may be joined by welding. However, if it is integrally formed by press working, there is the above-mentioned effect that it can be manufactured easily and accurately.

In the above embodiment, the fastener 20 is provided with the bent portion 24 serving as a ruler for holding the posture of the first refractory covering material 41. However, the bent portion 24 is not always required. It may not be provided. Further, in the above embodiment, the engaging portion 2
5 is formed by upper and lower tongues 26 and 27, and these tongues 2
Although the upper flange portion 3A of the ceiling beam 3 is sandwiched by 6 and 27, the present invention is not limited to this.
May be placed on the ceiling beam 3 and the first surface 21 and the ceiling beam 3 may be coupled by, for example, bolts and nuts. However, in the above-mentioned embodiment, there is an effect that the upper and lower tongue pieces 26, 27 and the like can be attached with one touch.

Furthermore, in the above embodiment, a hard fire-resistant floor material 11 is provided on the floor above the lower floor building unit 1 covered with the soft fire-resistant material 40, and the floor beam 4 is made of hard fire-resistant material. Although the upper-floor building unit 1 covered with the fireproof material 12 is arranged, the present invention is not limited to this. For example, an upper-floor building unit whose floor is covered with a soft refractory material is a lower-floor building unit 1
May be placed on top of. In this case, the soft refractory material on the floor of the upper-floor building unit and the soft refractory material 40 on the lower-floor building unit 1 may be pressed against each other and the wire nets may be bound together by a binding tool to be joined.

In the above embodiment, the first fireproof coating material 41 is attached to the ceiling beam 3 by the fastener 20 after the ceiling panel has been manufactured. However, the invention is not limited to this.
It may be attached either when the unit is manufactured or after the frame is completed. In short, in the present invention, the attachment of the first refractory coating material 41 may be performed before attaching the outer wall material 6 to the ceiling beam 3 which is a frame material. Further, in the above embodiment,
The second fireproof coating material 42 was attached to the outer wall material 6 in advance, and the outer wall material 6 was attached to the skeleton, but the invention is not limited to this.
After attaching the outer wall member 6 to the frame, the second fireproof covering member 4
2 may be attached.

[0028]

As described above, according to the present invention, since the soft refractory material is divided into the first and second refractory coating materials, the soft refractory material can be used by shortening its vertical dimension. As a result, the soft refractory material can be easily handled and work efficiency can be improved.

Further, the first and second refractory coating materials can be connected by binding the wire nets in the vicinity of their ends,
It facilitates the connection of the two refractory coatings.

[Brief description of drawings]

FIG. 1 is a perspective view showing a building unit according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a fastening device of the present embodiment.

FIG. 3 is a perspective view showing a state where the first refractory covering material is attached to a ceiling beam through a fastener.

FIG. 4 is a perspective view showing a state in which a second fireproof coating material is attached to the outer wall material.

FIG. 5 is a cross-sectional view showing a fire resistant structure near a ceiling beam of a lower floor building unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building unit 3 Ceiling beam which is a frame material 6 Exterior wall material 10 Unit type building 20 Fastener 40 Soft fireproof material 41 First fireproof covering material 41A One end of first fireproof covering material 41B First fireproof covering material The other end 42 The second refractory coating 42A The one end of the second refractory coating 41B The other end of the second refractory coating 43 The wire mesh 44 The binder

Claims (3)

[Claims] 1. A fireproof coating method for a unit building, in which a frame member of a building unit constituting a unit building is covered with a soft fireproof material, wherein the soft fireproof material is divided into first and second fireproof covering materials, and The first refractory covering is attached to the frame before attaching the outer wall to the frame, and then the first refractory covering is bonded to the outer wall attached to the frame. A fireproof coating method for a unit-type building, characterized by connecting with the second fireproof coating material. 2. The fireproof coating method for a unit-type building according to claim 1, wherein one end portion of the first fireproof coating material is fastened to a fastener having an engaging portion engageable with the frame material. And the other end is a free end, and one end of the second refractory covering is connected to the free end. 3. The fireproof coating method for a unit-type building according to claim 1 or 2, wherein the surfaces of the first and second fireproof coverings are surrounded by a wire mesh, and the connection of these fireproof coverings is A fireproof coating method for a unit-type building, characterized in that the wire mesh is bound by a binding tool.