JP3190213B2 - Fireproof structure of 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 covering structure of a unit building constructed by combining a plurality of building units.

[0002]

2. Description of the Related Art A unit building is constructed by combining a plurality of building units produced in a factory in advance at a construction site. These building units are provided with a frame formed by four pillars erected at the four corners, and four ceiling beams and floor beams connecting the upper ends and lower ends of the pillars. By attaching a ceiling material, a floor material, an outer wall, an inner wall, and the like to such a frame, it is formed in a substantially box shape.

[0003] When building an apartment house in such a unit-type building, fire resistance is required for the apartment house. Therefore, frame members such as columns and beams of building units constituting the unit-type building are made of fire-resistant members. Must be coated.

FIG. 4 shows a fireproof covering structure of a conventional unit building. As shown in FIG. 4, in the unit-type building 1, the upper-floor building units 2 and 2 which are horizontally adjacent to each other include columns 10 and floor beams 11 and the like. An abutment member 12 having a U-shaped cross section is fixed to the floor beam 11 in advance at a factory. A side surface of the abutment member 12 is provided with an attachment member 13 having an L-shaped cross section, for example, an ALC (lightweight bubble of high-temperature and high-pressure steam curing). A fire-resistant floor base material 14 made of concrete or the like is provided.

A joist 15 is provided on the upper surface of the floor base material 14, and a floor surface member 16 made of, for example, a particle board is attached to the upper surface of the joist 15. Further, between the joist 15 and the member 12, a side refractory material formed of a hard calcium silicate plate (silical plate) and having a height from the upper surface of the floor base material 14 to the upper surface of the floor beam 11. 17
Is provided. Such an upper-floor building unit 2, 2
After being assembled on site, a horizontal refractory material 18 for a joint straddling the both 11 and 11 and formed of a scallop board is attached to the upper surface of the opposing floor beam 11,
Further, a floor finishing material 19 is attached to the upper surfaces of the floor surface material 16 and the horizontal refractory material 18.

Although not shown, each upper-floor building unit 2
The ceiling beams of the lower-floor building units disposed below are each covered with a soft refractory material, and one end of each of the soft refractory materials comes into contact with the lower surface of the floor base material 14. . Therefore, the opposing floor beams 11, 11 of the upper-floor building unit 2 and the ceiling beam of the lower-floor building unit are made of the floor base material 14, the side refractory material 17, the horizontal refractory material 18, and the soft refractory material on the lower-floor building unit side. Surrounded by fireproof structure.

[0007]

However, in the fire-resistant structure of the unit-type building as described above, the floor beam 11 has four types of horizontal fire-resistant materials 18 for joints, side fire-resistant materials 17, joists 15, and floor materials 16. The material must be attached and covered, and there is a problem that it is difficult to make the levels of the horizontal refractory material 18 and the floor surface material 16 uniform because of a dimensional error caused by a difference in processing accuracy between the members 15 to 18 and the like. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a unit-type building in which the levels of floor members of two horizontally adjacent building units and a joint floor member provided between these floor members can be easily adjusted. It is to provide a fire-resistant coating structure.

[0009]

A fireproof structure for a unit building according to the present invention is a fireproof structure for a unit building constructed by combining a plurality of lower building units and upper building units. The floor members of the upper-floor building unit are attached to the joists supported by the floor beams of each upper-floor building unit, and the floor beams are covered with soft refractory material. The joint floor member extending between the floor members of the upper-floor building unit is supported by a joist and arranged.

In the fireproof covering structure of the unit building, the joint floor member and the floor surface material have the same thickness dimension,
Further, the joint floor member and the floor surface material may be directly supported on the joist.

In the present invention, the joint floor member may be formed thinner than the floor surface material, and a step may be formed at an end of the floor surface material, and the joint floor member may be attached to the joist via the step portion. Good.

In the present invention, the joint floor member may be formed thinner than the floor surface material, and may be attached to the joist via a spacer fixed to the lower surface of the joint floor member.

[0013]

According to the present invention, since the floor beams are covered with the soft refractory material, the soft refractory material is pressed when the joint floor member is arranged on the upper portion of the soft refractory material. Since it can be attached to the same joist that supports the timber, the level of the joint floor member and the floor surface material can be easily equalized.

In the present invention, when the joint floor member and the floor material have the same thickness and the joint floor member and the floor material are directly supported by the joist, the same joist is used. Since the joint floor member and the floor surface material having the same thickness dimension are directly supported, the levels of the joint floor member and the floor surface material can be easily equalized.

In the present invention, the joint floor member is formed thinner than the floor surface material, and a step portion is formed at an end of the floor surface material, and the joint floor member is attached to the joist via the step portion. In addition to being able to easily equalize the level of the joint floor member and floor material, even if the floor surface is lowered to obtain the indoor height of the building, the joint floor member is attached to the step Even if the soft refractory material is pressed by the joint floor member, the floor beam can be covered by the thickness dimension of the stepped portion, whereby the fire resistance performance of the soft refractory material can be secured.

In the present invention, when the joint floor member is formed thinner than the floor surface material and is attached to the joist via a spacer fixed to the lower surface of the joint floor member, the joint floor member and the floor surface material are separated from each other. The joint floor members are attached to the joists via spacers, so even if the floor is lowered to obtain the indoor height of the building, the soft refractory material is Even when pressed by the member, the floor beam can be covered by the thickness of the spacer, whereby the fire resistance performance of the soft refractory material can be secured. Also, in order to secure the fire resistance performance of the soft refractory material, a step is formed at the end of the floor surface material, compared with the case where the joint floor member is attached to the step portion, if a spacer is attached to the joint floor member. Good, easy to manufacture.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a fireproof structure of a unit building. In this figure, the same structure and the same members as those of the conventional unit-type building have the same reference numerals, and detailed description of the structure and the like is omitted or simplified.

As shown in FIG. 1, the floor beams 11 of the horizontally adjacent upper-floor building units 2 and 2 constituting the unit building 1 ′ are connected to the floor via a contact member 12 and a mounting member 13. A base material 14 is provided, and on the upper surface of the floor base material 14, the joist 15 having a height L1 is provided. The floor surface material 16 is attached to the upper surface of the joist 15 by nailing, for example.

The floor beam 1 of each such upper-floor building unit 2
1, a soft refractory material 25 made of Flex Guard (trade name; manufactured by Nichias Corporation) or the like is previously set in a factory.
Are attached, for example, by bonding or the like. That is,
The soft refractory material 25 covers the upper surface of the floor beam 11, and one end 25A is inserted between the opposing floor beams 11, and the other end 25B is in the gap between the member 12 and the joist 15. Has been inserted. This soft refractory material 25
Is thicker than the sum of the floor base material 14 and the joist 15 minus the floor beam 11. Note that such a soft refractory material 25 is attached in advance at a factory.

On the upper surface of the soft refractory material 25, a joint floor member 26 made of, for example, a particle board or the like is attached on site. The joint floor member 26 is formed to have the same thickness as the floor surface material 16, both ends in the width direction are placed on the upper surface of the joist 15, and the soft refractory material 2
5 is pressed and fixed to the joist 15 by nailing, for example. For this reason, the levels of the joint floor member 26 and the floor panel 16 are easily aligned. Although the joint floor member 26 and the floor panel 16 have the same thickness, the term "same" includes a case where they are completely the same and a case where they are almost the same.

On the other hand, the ceiling beams 20 of the lower-floor building unit 3 disposed below the upper-floor building unit 2 are also covered with soft refractory materials 35 and 36. That is, the ceiling beam 2
The bracket 30 is attached to the bracket 30 via the member 12. Soft brackets 35 and 36 of the same type as the flexible board 25 are attached to the bracket 30. One of the soft refractory materials 35 is connected to one of the ceiling beams 12.
, And one end 35A thereof is
It is pushed into the gap between one ceiling beam 12 and the other ceiling beam 12, and the other end 35 </ b> B is in contact with the lower surface of the floor base material 14 of the upper floor building unit 2.

The other soft refractory material 36 is also used for the other ceiling beam 12.
While covering the side surface and the lower surface of the
The one end 35A of the one soft refractory material 35 is in contact with the one end 35A, and the other end 36B is in contact with the lower surface of the floor base material 14 of the other upper floor building unit 2. Also, bracket 3
At 0, a through member 31 for pressing the soft refractory materials 35 and 36 against the bracket 30 is provided, and a small beam 32 is provided at the through member 31. A holding plate 33 for pressing the soft refractory materials 35 and 36 against the ceiling beam 12 is attached to the lower surfaces of the through member 31 and the bracket 30.
A joint ceiling member 37 for connecting the ceiling surface members 34 of each lower-floor building unit 3 to each other is attached to 3 by nailing or the like. The fireproof structure of the ceiling beams of the upper building unit 2 is exactly the same as the fireproof structure of the ceiling beams 20 of the lower building unit 3 shown in FIG.
The description is omitted.

According to this embodiment, the following effects can be obtained. That is, the floor beams 11 of the upper-floor building unit 2
Covered with the soft refractory material 25, the joint floor member 2
When attaching the floor 6, the soft refractory material 25 can be pressed by the floor member 26, and the joint floor member 26 and the floor material 16 having the same thickness can be directly attached to the same joist. Joint floor member 26 and floor material 1
6 can be easily adjusted to the same level.

The floor beams 11, 11 of the upper-floor building unit 2 adjacent in the horizontal direction can be covered with the same soft refractory material 25, so that the number of parts can be reduced. Further, the upper-floor building unit 2 is covered with a soft refractory material 25, and the lower-floor building unit 3 is covered with soft refractory materials 35 and 36, respectively. Work becomes easier.

FIG. 2 shows a second embodiment of the present invention. In this embodiment, the height of the joist 15 'is made smaller than the height of the joist 15 of the first embodiment, and
The thickness of the joint floor member 26 'is smaller than the thickness of the joint floor member 26 of the first embodiment, and the joint floor member 26' is indirectly attached to the joist 15 '.

That is, as shown in FIG. 2, in order to increase the indoor height, the joist 15 'has a height L2, and a floor panel 16' is placed on the joist 15 '. A step 16'A is formed at an end of the floor panel 16 ', and a joint floor member 26' is placed on the step 16'A. The thickness dimension of “′” is the same as the thickness dimension of the floor panel 16 ′. In other words, the joint floor member 26 'is indirectly attached to the joist 15' via the step 16'A of the floor panel 16 '. Therefore, the joint floor member 26 '
Even if the soft refractory material 25 is pressed, the soft refractory material 25 having the thickness of the step portion 16 ′ A covers the floor beam 11. In this embodiment, the same structures and members as those in the first embodiment are denoted by the same reference numerals, and detailed description of the structure and the like is omitted or simplified.

In this embodiment, in addition to the same effects as above, even if the height of the joist 15 'is lowered and the floor is lowered in order to obtain the indoor height of the building,
The joint floor member 26 'is a step portion 16' of the floor panel 16 '.
A, the floor beam 11 can be covered by the thickness dimension of the step portion 16'A even if the soft refractory material 25 is pressed by the joint floor member 26 ', whereby the refractory performance of the soft refractory material is improved. There is an effect that can be secured.

FIG. 3 shows a third embodiment of the present invention. In this embodiment, the joist 15 'and the joint floor member 26' have the same structure as in the second embodiment,
The joint floor member 26 'is directly attached to the joist 15' via the spacer 27. That is, as shown in FIG. 3, the spacer 27 having a rectangular cross section is attached to the lower surface of both ends of the joint floor member 26 ′, and the thickness dimension of both the spacers 26 ′ and 27 is the same as that of the upper floor building unit 2. It is the same as the thickness of the floor panel 16. In this embodiment, the same structures and members as those in the first and second embodiments are denoted by the same reference numerals, and detailed description of the structure and the like is omitted or simplified.

In this embodiment as well, in addition to the same effects as above, if the spacer 27 is attached to the lower surface of the joint floor member 26 ', the same thickness as the floor panel 16 can be obtained. Paragraph section 16 'on flooring material 16' in the example
There is an effect that manufacture is easier than in the case of forming A.

The present invention is not limited to the above-described embodiments, but includes the following modifications as long as the objects of the present invention can be achieved. For example, in each of the above embodiments, one end portion 25A of the two soft refractory materials 25 is inserted into the gap between the floor beams 11, 11 which are horizontally adjacent to each other. The upper surfaces of the floor beams 11 and 11 may be covered with the soft refractory material described above, and the side surfaces of the floor beams 11 and 11 of each upper-floor building unit 2 may be covered at both ends. In this way, the soft refractory material can be used as the floor beam 1.
Since the time and effort for insertion into the gap between the members 1 and 11 can be omitted, workability is improved, and the number of parts can be reduced because only one soft refractory material is required.

[0031]

As described above, according to the fireproof covering structure of the unit-type building of the present invention, since the floor beams are covered with the soft fireproof material, when the joint floor member is disposed above the soft fireproof material. The joint floor member presses the soft refractory material, which allows the joint floor member to be attached to the same joist that supports the floor surface material, so that the levels of the joint floor member and the floor surface material are easily aligned Can be.

When the joint floor member is formed thinner than the floor material, and a step is formed at the end of the floor material, and the joint floor member is attached to the joist via the step, In addition to being able to easily equalize the level of members and floor materials, even if the floor surface is lowered to obtain the indoor height of the building, the joint floor members are attached to the steps, so soft refractory materials Even if pressed by the joint floor member, the floor beam can be covered by the thickness of the step,
Thereby, the fire resistance performance of the soft refractory material can be secured.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of a fireproof covering structure of a unit-type building according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a main part of a second embodiment of the present invention.

FIG. 3 is a sectional view showing a main part of a third embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a main part of a conventional fireproof covering structure of a unit building.

[Explanation of symbols]

 1, 1 'Unit-type building 2 Upper-floor building unit 3 Lower-floor building unit 11 Floor beam 14 Floor base material 15, 15' Joist 16, 16 'Floor surface material 20 Ceiling beam 25 Soft refractory material 26, 26' Joint floor member 27 Spacer 35 Soft refractory material on ceiling beam side

Claims (4)

(57) [Claims] 1. A fireproof covering structure for a unit-type building constructed by combining a plurality of lower-floor building units and an upper-floor building unit, wherein a joist supported by floor beams of each of the upper-floor building units has an upper floor. The floor material of the building unit is attached, and the floor beam is covered with a soft refractory material, and the upper portion of the soft refractory material extends between the floor materials of the horizontally adjacent upper-floor building unit. A fireproof covering structure for a unit-type building, wherein a joint floor member is supported by the joists. 2. The fire-resistant covering structure for a unit building according to claim 1, wherein the joint floor member and the floor surface material have the same thickness and the joint floor member and the floor surface material. Is a fire-resistant covering structure for a unit-type building, which is directly supported by the joists. 3. The fire-resistant covering structure for a unit building according to claim 1, wherein the joint floor member is formed thinner than the floor surface material, and a step portion is formed at an end of the floor surface material. Wherein the joint floor member is attached to the joist via the step portion. 4. The fireproof covering structure for a unit building according to claim 1, wherein said joint floor member is formed thinner than said floor surface material and via a spacer fixed to a lower surface of said joint floor member. A fire-resistant covering structure for a unit-type building, which is attached to the joist.