JP2556187Y2 - Structure of penetration part in fire wall - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a penetration structure applied to a fire wall provided for the purpose of preventing a fire from spreading or spreading.
About the elephants.

[0002]

2. Description of the Related Art Conventionally, large-scale wooden buildings or steel-framed buildings are required to be provided with a fireproof wall having a fireproof structure for the purpose of preventing the spread and spread of fire. As the structure of the fire wall, various structures are provided, one of which is a non-combustible material, a quasi-non-combustible material,
BACKGROUND ART A fire wall having a hollow structure to which a heat insulating material made of a flame-retardant material is attached is known.

However, due to the structure of the building, there is a case where a steel beam or the like is present at a place where a fire wall is provided. In such a case, an opening is provided in the fire wall and the steel beam has to be penetrated. There was a problem that the fire prevention performance was reduced. for that reason,
Conventionally, the gap between the steel beam and the fire wall has been filled with a heat insulating material such as glass wool to cope with the deterioration in fire prevention performance.

[0004]

However, in the conventional method using a heat insulating material such as glass wool, in the case of, for example, I-shaped steel, the gap between the steel frame and the fire wall cannot be sufficiently filled due to the structure. However, some gaps remained, and the necessary fire protection performance as a fire wall could not be secured.

The present invention has been made in view of the above-mentioned problems, and has a penetrating portion capable of sufficiently filling a gap around a steel frame penetrating a fire wall to ensure sufficient fire protection performance .
The purpose is to provide a structure .

[0006]

SUMMARY OF THE INVENTION According to the present invention,
Hollow structure with heat insulating plates attached to both sides
The structure of the penetrating portion applied to the fire wall of
In addition to providing an opening for penetrating the steel frame in the heat insulating plate,
Felt molding with fire resistance, flexibility and elastic restoring force
A heat insulating material made of a plate is sandwiched between the heat insulating plates at its peripheral edge.
By holding it and mounting it inside the opening, the opening
And the heat insulating material has a cross-sectional shape of the steel frame.
Forming a notch of a corresponding shape,
It is characterized in that the bone is inserted.

[0007]

In the structure of the penetrating part according to the present invention, a steel frame is used.
The opening for letting through the felt
Blocked by the insulation made of shaped plates, and the insulation
Of the opening in the form of sandwiching the periphery of
By mounting inside, there is no gap in the opening, thus preventing
The plug can be reliably closed without lowering the fire performance.

In addition, a heat insulating material for closing the opening is provided.
All felt-formed plates are very flexible.
Freely process the size and shape according to the size of the opening
Not only that, but also a notch
It can be easily formed corresponding to the cross-sectional shape of the steel frame. Soshi
Insulation made of felt-formed plate is also rich in elastic restoring force
And therefore insert the steel frame through the cut
This compresses the insulation by the thickness of the steel frame,
More heat insulating material naturally adheres to the steel frame surface due to its own elastic restoring force
There is no room for gaps around the steel frame due to close contact.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a state in which a steel frame S having an I-shaped cross section penetrates a fire wall W. As shown in the figure, firewall W, the force bone become furring strip (between material) 1 on both sides in the heat insulating plate 2 and 2
And a hollow structure. In the middle of the fire wall W, a square opening 3 is provided in both the heat insulating plates 2 and 2 to allow the steel frame S to pass therethrough. And this opening
The inside of the part 3 is not only fire resistant but also flexible
Insulation made of felt-formed plate with elastic and elastic restoring force
Material 10 with its peripheral edge sandwiched between insulating plates 2 and 2
The opening 3 is resistant to heat by the heat insulating material 10.
Closed so that fire performance can be maintained.

In this embodiment, the heat insulating material 10 is made of a three-layered felt including a central felt 11 mainly composed of rock wool and side felts 12 and 12 as general high-temperature heat insulating materials. ing. As the central felt 11, for example, a commercially available highly flexible felt (manufactured by Nichias Co., Ltd., trade name: MG felt) formed by adding a phenolic resin binder to rock wool and forming into a plate shape is used. In addition, the side felt 12 includes:
For example, a flexible, commercially available felt formed by adding an organic binder to bulk fiber to form a plate (Fineflex 1300, trade name, manufactured by Nichias Corporation)
Felt) is used.

The heat insulating material 10 composed of the above-mentioned three-layered felt has a shape and dimensions covering the opening 3 of the fire wall W. This heat insulating material 10, as shown in FIG.
In order to cover the opening 3 of the fire wall W from the inside,
2 and between the upper and lower body edges 1, 1. Accordingly, the thickness of the heat insulating material 10 is set to be the same as the width of the body edge 1. Further, in this arrangement state, the heat insulating material 10 is fixed and supported at a predetermined position by the heat insulating plates 2 and 2 and the support fitting 13 through which the heat insulating material 10 is inserted. The support members 13 are provided at substantially equal intervals around the opening 3 to enhance the integrity of the heat insulating material 10 and the heat insulating plates 2 and 2. Bolts and nuts are usually used for the support fitting 13, but the heat insulating material 10 is used.
Any other metal fitting can be used as long as the metal fitting can support it.

As shown in FIG. 3, the heat insulating material 10 is provided with an I-shaped cut 14 corresponding to the cross-sectional shape of the steel frame S. Shaped steel frame S is inserted. In this case, the insulating material 10 is made of a flexible and elastic restoring force.
Since is made of shot molding plate, the wall thickness amount corresponding heat insulating material 10 of Steel S are inserted through the notches 14 compression, naturally the heat insulating material 10 is the surface of the steel S by its elastic restoring force
There is no room for a gap between the notch 14 and the steel frame S to adhere . In addition, the heat insulating material 10 and the heat insulating plates 2 and 2 are secured by the support metal 13 so that there is no gap between them. Therefore, the opening 3 of the fire protection wall W is sufficiently closed by the heat insulating material 10, and no gap is formed around the steel frame S, so that sufficient fire protection performance is secured.

Next, the procedure for constructing the fire wall W having the above structure will be described.

(1) A heat insulating material 10 having a predetermined shape and a predetermined size made of a three-layered felt is manufactured in advance. Further, at the site, a heat insulating plate 2 is attached to one surface of the rim 1 attached to a frame structure such as a pillar or a beam.

(2) An I-shaped notch 14 penetrating in the thickness direction with a knife or the like is provided in the heat insulating material 10, and a steel frame S having an I-shaped cross section is inserted into the notch 14 and attached to the steel frame S. At the same time, the heat insulating material 10 is arranged inside the existing heat insulating plate 2. Notch 14 for insulation 10
Since the heat insulating material 10 is rich in flexibility and excellent in workability, it can be easily provided. In addition, regarding the work of inserting the steel frame S into the notch 14, the heat insulating material 10 is rich in flexibility and the heat insulating material 10 is compressed by the thickness of the steel frame S.
The steel frame S can be easily inserted into the cut 14, and after the insertion, the heat-insulating material 10 has an effect of returning to the original shape due to the internal compressive stress of the heat-insulating material 10. Therefore, a gap is formed around the heat-insulating material 10. There is no room for it.

(3) A heat insulating plate 2 is attached to the other surface of the body edge 1, and a support fitting 13 is inserted into the peripheral portion of the heat insulating material 10 from the outside of one of the heat insulating plates 2, and is attached to the other heat insulating plate 2, respectively. Then, the heat insulating material 10 is fixed. Thereby, the construction of the fire wall W is completed.

According to this embodiment, the following effects can be obtained.

(A) The heat insulating material 10 is highly flexible and elastic.
Since a felt-formed plate having a restoring force is used, the steel frame S can be easily inserted into the cuts 14 provided in the heat insulating material 10 while compressing the heat insulating material 10 by the thickness of the steel frame S, and after the insertion, the heat insulating material 10 is thermally insulated. Due to the elastic restoring force of the material 10, there is no room for forming a gap between the heat insulating material 10 and the steel frame S,
Therefore, the periphery of the steel frame S can be sufficiently sealed, and the fit around the steel frame can be improved.

(B) Also, as described above, the heat insulating material 10
The flexibility and the felt molded plate having an elastic restoring force since <br/> configuration, high adhesion effect on heat insulating plate 2 and 2 of the heat insulating material 10, yet the heat insulating plate and the periphery of the heat insulator 10
Attached inside opening 3 in the form sandwiched between 2 and 2
Therefore, the opening 3 can be sufficiently closed. Therefore, in combination with the effect of (a), it is possible to reliably prevent the fire prevention performance from lowering while forming the opening 3, and to secure a sufficient fire prevention performance as a fire wall.

(C) Since the method of sealing the opening 3 with the heat insulating material 10 as in the present embodiment is a dry method, the construction is easy. Further, since the heat insulating material 10 is made of felt and can be freely processed into an arbitrary shape and size, the degree of freedom in design is large according to the cross-sectional shape of the steel frame S. Furthermore, since the heat insulating material 10 is lightweight, it is easy to carry and easy to install on site.

[0022]

[Effects of the Invention] As described above, according to the present invention,
Felt-formed plate inside opening to penetrate steel
A heat insulating material consisting of
Is the structure to insert a steel frame into the cut formed in the material?
However, the fact that the openings can be reliably closed
Freer insulation and cut-off according to the cross-sectional shape of the steel frame
Easily and easily, and by the elastic restoring force of the heat insulating material
The gap around the steel frame can be sufficiently sealed, and the fire prevention performance required as a fire wall can be sufficiently ensured.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, in which a steel frame penetrates a fire wall.

FIG. 2 is a front view of the fire wall.

FIG. 3 is a front view of a heat insulating material used for the fire wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body edge 2 Insulation board 3 Opening 10 Insulation material S Steel frame W Fire wall

Claims (1)

(57) [Scope of request for utility model registration] 1. Insulating plates on both sides of a spacer
Applied to a fire wall of hollow structure
A structure of a through portion, wherein a steel frame is penetrated through each of the heat insulating plates.
With openings for fire resistance, flexibility and elasticity
A heat insulating material made of felt-formed plate with restoring force
An edge portion is sandwiched between the heat insulating plates so that the inside of the opening
Side to close the opening, and the heat insulating material
A notch of a shape corresponding to the cross-sectional shape of the steel frame
That the steel frame is inserted through the cut.
Characterized by the structure of the penetration in the fire wall.