JPH09317083A - Glass structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass structure having an excellent fireproof characteristic despite its transparency in the whole construction by forming the structure from a glass block assembly having fireproofness and fireproof glass plates. SOLUTION: Each glass block 10 is formed from a pair of glass molding in the form of a box equipped with a bottom and with no lid, and their open edges are welded together. The glass block 10 is of 190mm long, 190mm transverse, and 95mm wide, and the wall thickness of the front surface part and rear surface part is 10.8mm, and the degree of tensile stress at the two inner surfaces of the front surface part and rear surface part is 28kg/cm<2> .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a glass block aggregate and a fireproof glass plate, and is used for exterior materials, interior materials, partitions, etc. of buildings to prevent the spread of fire and the spread of smoke during a fire. It relates to a glass construction capable of

[0002]

2. Description of the Related Art A glass block is a glass molded body having a hollow box shape. When manufacturing this, a pair of box-shaped glass molded bodies having a bottom and an open lid are prepared.
A method is used in which the open edges are heated and softened, and then pressure is applied so as to bond the two to integrate them by fusion.

Since the glass block is excellent in heat insulating property, sound insulating property, and light transmitting property, those aggregates are formed into a panel by using mortar and reinforcing bars, and are surrounded and held by a metal frame. Widely used as interior materials and partitions.

[0004]

By the way, in recent years, buildings,
As large buildings such as department stores and supermarkets increase,
There is an increasing demand for fire doors that block flames and smoke to prevent the spread of fire during a fire.

Conventionally, iron doors and reinforced concrete doors have been mainly used as fire doors, but nowadays, importance is attached to a design in consideration of easy digestion activity and open space. Transparent fireproof glass plates are becoming popular.

Low-expansion transparent crystallized glass plates, borosilicate glass plates, and meshed glass plates exist as fireproof glass plates, and fire doors in which these glass plates are fitted in a metal frame are
It has been certified as a Class A fire door that can withstand a 60-minute heating test and impact test according to the fire resistance heating curve specified by Ministry of Construction Notification No. 1125. Recently, such a fire protection glass plate is combined with a glass block assembly. By doing so, it has been attempted to make a transparent wall with a large area.

However, the panel composed of the glass block aggregate has a problem that it cannot withstand the above-mentioned heating and impact tests, and that a glass construct having excellent fireproof performance cannot be obtained.

That is, in the case of a conventional glass block panel,
When heated at high temperature, many cracks that become the origin of the through fracture surface occur in the glass block, and in addition, the deformation stress due to the expansion of the metal frame surrounding the aggregate of glass blocks is applied to the glass block. The glass block is destroyed by. As a result, there is a problem that the fire penetrates the glass block panel and loses the insulation function as well as the insulation function.

The present invention has been made in view of the above circumstances, and since it is composed of a glass block aggregate having a fireproof property and a fireproof glass plate, the glass having an excellent fireproof property while being entirely transparent. It is intended to provide a construct.

[0010]

As a result of repeating various experiments in order to achieve the above-mentioned object, the inventors of the present invention have found that the inner surface of both the front and rear surfaces of the glass block is depressurized by the hollow inside. The present invention has been proposed based on the finding that tensile stress is generated, and in the case of a conventional glass block, the thickness of the front surface portion and the rear surface portion is thin and the stress level of the inner surface thereof is as high as 70 kg / cm ^2. It was

That is, the glass construct of the present invention is composed of a glass block aggregate and a fireproof glass plate, and the tensile stress degree on both inner surfaces of the front and rear surfaces of each glass block is 40 kg / cm ² or less. Is characterized in that.

The present invention is also characterized in that the fireproof glass plate is made of low expansion transparent crystallized glass.

[0013]

The glass block used in the present invention has a tensile stress of 40 kg / c on both inner surfaces of the front and rear surfaces thereof.
Since it is m ² or less, the tensile stress is small, and it is possible to significantly reduce the occurrence rate of cracks that become the origin of formation of the through fracture surface when heated at high temperature. The tensile stress can be ensured by increasing the thickness of the front surface portion and the rear surface portion of the glass block, for example.

The fireproof glass plate used in the present invention is also surrounded and held by a rectangular metal frame, and as its material, any of a low expansion transparent crystallized glass plate, a borosilicate glass plate, and a netted glass plate can be used. Is.

However, considering fire resistance and transparency, the low expansion transparent crystallized glass plate is most suitable, and specifically,
Li ₂ O 3-6%, Al ₂ O ₃ 17 by weight percentage
_{~35%, SiO 2 55~70%,} TiO 2 1~3
%, ZrO ₂ 1 to 4%, P ₂ O ₅ 0.01 to 5%,
Na ₂ O 0-4%, K ₂ O 0-4% composition,
Thermal expansion coefficient of -10 to 10 x 10 ^-7 / ° C (30 to 750
C.) is preferred.

The fireproof glass plate may be used as a single sheet, or may be used in a form in which a plurality of sheets are laminated. Use of multiple fireproof glass plates, or laminated glass in which fireproof glass plates and ordinary window glass (soda lime glass) are bonded together with a flame-retardant film can provide extremely excellent fire resistance and safety performance. Therefore, it is preferable.

At this time, the flame-retardant film used is, for example, JP-A-4-224938 or Japanese Patent Application No. 6-30136.
The fluororesin film and polyethylene terephthalate film disclosed in No. 3 are suitable.

[0018]

EXAMPLES The glass construct of the present invention will be described in detail below based on examples.

FIG. 1 is a schematic front view showing a glass construct according to the present invention, and FIG. 2 is an enlarged sectional view taken along line AA of FIG.

In the figure, 10 is a glass block, 11 is a metal frame, 12 is a fireproof glass plate, 13 is lateral force bone, 14 is longitudinal force bone, 15 is an anchor piece, 16 is a drain plate, 1
7 is a sliding material, 18 is a cushioning material, 19 is a mortar, 20 is a sealing material, and 21 is a makeup joint.

Each glass block 10 is produced by preparing a pair of glass molded bodies having a box shape with a bottom and no lid, and welding their open edges.
These glass blocks 10 have a length of 190 mm and a width of 19
The thickness is 0 mm and the width is 95 mm, the thickness of the front surface and the rear surface is 10.8 mm, and the tensile stress of both inner surfaces of the front surface and the rear surface is 28 kg / cm ² .

The metal frame 11 is a rectangular frame body having a concave cross section made of stainless steel or aluminum for surrounding and holding the aggregate of the fireproof glass plate 12 and the glass block 10.
The metal frame 11 can be attached to the skeleton by engaging and tightening the metal frame 11 in the opening of the skeleton (not shown) using a fitting.

The lateral force bones 13 and the longitudinal force bones 14 are reinforcing bars made of stainless steel, and are arranged in the longitudinal and lateral directions between the glass blocks 10, and the anchor piece 15 is provided in each of the force bones 1.
It is for supporting both ends of the metal frames 3 and 14, and is provided at a position where the force bones 13 and 14 of the concave portion of the metal frame 11 are arranged.

Metal frame 1 for holding the glass block assembly
An anchor piece 15, a water draining plate 16, and a sliding member 17 are provided on the bottom surface of the recess 11a of FIG.
An anchor piece 15, a sliding material 17, and a cushioning material 18 are provided on the side surface and the upper surface of 1a, and mortar 19 is filled between the metal frame 11 and the glass blocks 10 and between the glass blocks 10. ing. Further, a sealing material 20 is filled between the glass block 10 and the metal frame 11, and a decorative joint 21 is filled on the surface layer side of the mortar 19 filling area between the glass blocks 10.

Each of the two fireproof glass plates 12 and 12 is made of Firelight (registered trademark) manufactured by Nippon Electric Glass Co., Ltd., which is a low expansion transparent crystallized glass, and has a length of 2400 mm, a width of 1200 mm and a thickness of 5 mm. Has the dimensions of. The coefficient of thermal expansion of this low expansion transparent crystallized glass plate is −4 × 10 ⁻⁷ / ° C. (30 to 750 ° C.), and it has extremely excellent fire protection performance.

Recesses 11b are also formed around the metal frame 11 for holding the fireproof glass plates 12, 12, and setting blocks 22, 2 are provided above and below the recesses 11b.
2 are arranged. The fireproof glass plates 12 and 12 are held so as to be sandwiched between the upper and lower setting blocks 22 and 22, and a non-combustible sealant material 23 is filled in a gap between the metal frames 11 and both sides thereof.

When producing such a glass construct,
First, the metal frame 11 is attached to the opening of the body, and the anchor piece 15, the drainage plate 16, and the sliding member 17 are provided on the bottom surface of the recess 11a of the metal frame 11 that holds the aggregate of the glass blocks 10, and then the anchor piece. A longitudinal force bone 14 is arranged via 15. An anchor piece 15, a sliding material 17, and a cushioning material 18 are provided on the side surface and the upper surface of the recess 11a.

Then, the recess 11a of the metal frame 11 is filled with the mortar 19 and the first-stage glass block 10 is sequentially placed. In this case, the mortar 1 is provided between the glass block 10 and the adjacent metal frame 11 and between each glass block 10.
While filling 9. After placing the first-stage glass blocks 10, the lateral force bones 13 are arranged on these glass blocks 10 and the mortar 19 is filled, and then the second-stage glass blocks 10 are processed in the same manner as the first stage. And place them one after another. In this manner, the third and subsequent stages are stacked, the glass blocks 10 are stacked to the uppermost stage, and then the sealing material 20 is filled between the glass block 10 and the metal frame 11, and the mortar between the glass blocks 10 is filled. The makeup joint 21 is filled on the surface layer side of the filling area.

Next, after setting blocks 22 and 22 are provided above and below the concave portion 11b of the metal frame 11 for holding the respective fireproof glass plates 12 and 12, the fireproof glass plates 12 and 12 are fitted therein, and the surrounding both sides and the metal frame. A nonflammable sealant material 23 is filled in the gap with 11.

[0030]

As described above, the glass construct of the present invention is
Since it is composed of an aggregate of glass blocks having fireproof performance and a fireproof glass plate, it has a large area, is transparent, and has excellent fireproof performance. It is suitable as an exterior material, an interior material, a partition, and the like.

[Brief description of drawings]

FIG. 1 is a schematic front view showing a glass construct of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 10 Glass Block 11 Metal Frame 12 Fireproof Glass Plate 13 Lateral Strength Bone 14 Longitudinal Strength Bone 15 Anchor Piece 16 Drain Plate 17 Sliding Material 18 Buffer Material 19 Mortar 20 Sealing Material 21 Makeup Joint 21

Claims (2)

[Claims] 1. A glass construction comprising a glass block aggregate and a fireproof glass plate, wherein the tensile stress degree on both inner surfaces of the front and rear surfaces of each glass block is 40 kg / cm ² or less. body. 2. The glass construct according to claim 1, wherein the fireproof glass plate is made of low expansion transparent crystallized glass.