JP2543586B2 - Floor board - Google Patents

Description

TECHNICAL FIELD The present invention relates to a floor structure having a floor beam portion as a fireproof structure.

[Conventional technology]

As is well known, calcium silicate board has been widely used as a refractory material in buildings of refractory structure in recent years.

[Problems to be Solved by the Invention]

Since the above-mentioned calcium silicate plate is inferior in mechanical strength against bending and compression, it has been difficult to function as a building member to which a large bending load or compression load is applied, for example, a floor plate.

Therefore, as described in Japanese Patent Application Laid-Open No. 61-143132, the conventional technique has been limited to functioning as a fireproof ceiling plate or wall plate.

On the other hand, in a unit housing that is assembled in advance in a factory, it is transported to the construction site and fixed to the foundation, but in two adjacent unit housings, the floor beams are separated by a certain size and arranged so as to face each other. In some cases, the floor beams may have to have a fireproof structure. In such a case, a complicated work of covering opposing floor beams with a refractory material prepared in advance and then covering them with a general floor material such as plywood to connect the floor surfaces has been performed.

The present invention has been made in view of the above-mentioned problems of the conventional techniques, and an object thereof is to provide a fireproof floor structure in which a floor beam portion is made of a fireproof structure by a floor material.

[Means for solving the problem]

The fireproof floor structure of the present invention is characterized in that a floorboard having synthetic resin-coated steel sheets attached to both front and back surfaces of a calcium silicate board is fixed to the upper part of the floor beam and the floor beam is fireproof coated. Yes, this achieves the above objective.

[Action]

The floor beam will be covered by the calcium silicate plate of the floor plate, and a fire resistant structure for the floor beam will be formed. At the same time, the synthetic resin coated steel plate attached to the calcium silicate plate will also have excellent waterproofness and corrosion resistance. .

Then, the inferior mechanical strength of the calcium silicate plate against bending, compression, etc. is compensated by the synthetic resin coated steel plates attached to both front and back surfaces, and it becomes possible to sufficiently withstand the load of a person or a placed object.

In this way, it is possible to provide a refractory floor structure in which floor surface formation and fireproof coating can be performed collectively.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show an example of a floorboard used in the present invention. FIG. 1 is a sectional view thereof, and FIG.
The figure is an exploded perspective view thereof. Further, FIG. 3 shows an example of a fireproof floor structure of the present invention, and is a cross-sectional view of a floor portion in a connecting portion of two so-called unit houses.

In FIG. 3, 1A and 1B are floor boards, 10A and 10B are unit houses, and C is a foundation.

The unit houses 10A and 10B are pre-assembled in a factory, transported to a construction site and fixed on the foundation C. Each unit house 10A, 10B has a floor beam 11 fixed to the foundation C, and this floor beam 11 has an ALC (Aut
oclaved Light Weight Concrete) board 12 is attached.

That is, the end portion of the ALC plate 12 is sandwiched between the receiving member 13 and the pressing member 14 which are fixed to the side portion of the floor beam 11, and is fixed by the bolt 15 and the nut 16 penetrating them.

A joist support 17 is installed on the ALC plate 12, and the joist support 17
A floor joist 18 is installed on the floor, and a floor board 19 is further installed on the floor joist 18.

The floor board 19 is made of a general material such as plywood. The bent end portion 14a extending upward in the pressing member 14 is flush with the upper surface of the floor beam 11, and these surfaces are more than the upper surface of the floor board 19 used in the present invention, 1A,
It is placed at a lower position by the thickness of 1B.

By the way, each unit house 10A, 10B is arranged so that each floor beam 11 is separated by a predetermined dimension so as to face each other, and on the upper side portion of the floor beam 11 of one unit house 10A,
A floor receiving member 20 having an inverted L-shaped cross section is fixed by horizontally extending its horizontal portion 20a toward the other unit house 10B side.

The floorboards 19 of the unit houses 10A and 10B are the floorboards 1
They are connected by A and 1B so that they are flush with each other and without a gap.

The narrow floorboard 1A is the floor beam 11 of the unit housing 10A.
It is hung on the bent end 14a of the pressing member 14 and is fixed to the bent end 14a by the nail 21. In addition, the other wide floorboard 1B is used as a holding member 14 in the unit housing 10B.
The bent end portion 14a, the floor beam 11, and the horizontal portion 2 of the floor plate receiving member 20.
It is hung on 0a, and the bent end 14a and the horizontal portion 2 are fixed by the nail 22.
It is fixed at 0a.

Since the floor plates 1 shown in FIGS. 1 and 2 are used as the floor plates 1A and 1B, the structure thereof will be described with reference to FIGS. 1 and 2.

The floor plate 1 is composed of a calcium silicate plate 2 and a pair of polyvinyl chloride resin-coated steel plates (synthetic resin-coated steel plates) 3 and 4 arranged on both sides of the calcium silicate plate 2.

As is well known, polyvinyl chloride resin coated steel plates 3 and 4 are steel plates.
Polyvinyl chloride resin 32, 42 with a specified thickness on all surfaces of 31, 41
It has a very good waterproofness and corrosion resistance. The polyvinyl chloride resin-coated steel plates 3 and 4 are entirely adhered to the front and back surfaces of the calcium silicate plate 2 with a nitrile rubber adhesive.

In this floor board 1 (1A, 1B), the polyvinyl silicate resin-coated steel plates 3 and 4 attached to the front and back surfaces of the calcium silicate plate 2 are mechanically bonded to the calcium silicate plate 2 without impairing the fire resistance of the calcium silicate plate 2. It compensates for the inferiority.

For example, when an object is placed on the floorboard 1 (1A, 1B) or a person walks on it, the floorboard 1 (1A, 1B)
A large compressive load is partially applied to 1B) and a bending load is also applied. At that time, when the calcium silicate board is used as a floor board in a pure state, the calcium silicate board cannot withstand the above load and is crushed and dented, or it cannot withstand the bending load and bends, or cracks when it exceeds the limit. Will end up. However, in the case of this floor board 1 (1A, 1B),
Since the polyvinyl chloride-coated steel plates 3 and 4 arranged on the calcium silicate plate 2 receive the compressive load, the steel plates 31 and 41
By properly selecting the material and thickness of, the compressive load can be sufficiently endured, and the floorboard 1 (1A, 1B) is not damaged such as dented. Also, both polyvinyl chloride coated steel sheets 3,
Since the steel plates 31 and 41 of No. 4 are rich in rigidity and excellent in bending strength, the bending strength of the floor board 1 (1A, 1B) is increased. Therefore, the floorboard 1 (1A, 1B) is less likely to bend and crack.

Thus, in the floor structure shown in FIG. 3, the floor board 1
By attaching (1A, 1B), the fire resistant structure of the floor beam 11 is formed and at the same time the floor surface is also formed, so that the fire resistant structure formation and floor surface formation of the floor beam portion are performed at once. It will be.

In addition, a decorative board or decorative sheet (not shown) is additionally provided on the floor boards 19 and 19 and the floor boards 1A and 1B of both unit houses 10A and 10B to complete the floor of the building.

〔The invention's effect〕

As described above, in the refractory floor structure of the present invention, since the floor beam portion is covered with the calcium silicate plate of the floor plate fixed to the upper part of the floor beam, the fire-resistant structure for the floor beam is formed and the calcium silicate plate is formed. Due to the attached synthetic resin coated steel plate, it is also excellent in waterproofness and corrosion resistance, and floor surface formation and fireproof coating can be performed at once.

Since the mechanical strength of the calcium silicate plate against bending, compression, etc. is compensated by the synthetic resin-coated steel plates attached to both front and back surfaces, it can sufficiently withstand the load of a person or a placed object.

[Brief description of drawings]

1 and 2 show an example of a floorboard used in the present invention. FIG. 1 is a sectional view thereof, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a fireproof floor of the present invention. It is sectional drawing of one Example of a structure. 1A, 1B …… Floor board, 2 …… Calcium silicate board, 3,4 ……
Steel sheet coated with polyvinyl chloride resin (steel sheet coated with synthetic resin), 10
A, 10B …… Unit housing, 11 …… Floor beam, 12 …… ALC board, 1
7 …… joists, 18 …… floor joists, 19 …… floor boards

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Showa 49-86616 (JP, U) Showahei 1-64427 (JP, U)

Claims (1)

(57) [Claims] 1. A refractory floor structure characterized in that a floor plate having synthetic resin coated steel plates attached to both front and back surfaces of a calcium silicate plate is fixed to the upper part of the floor beam to cover the floor beam with fire resistance.