JP2003193602A - Rescue entrance structure of glass screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rescue entrance structure when a glass screen is used as an exterior wall of a building and the like. <P>SOLUTION: When the exterior wall of the building is constructed of the glass screen composed of a plurality of laminated sheet glass plates which are juxtaposed and erected in vertical and horizontal directions, the glass plate at a rescue entrance on a second floor or floors higher than the second floor is composed of laminated sheet glass, so that a rescue entrance part can be composed of a single plate. In the laminated sheet glass, indoor-side glass and an interlayer, in which a circularly or rectangularly bored opening is provided in a central part of the glass plate, and outdoor-side glass, the whole surface of which is composed of the glass plates, are bonded together. The floor, on which the rescue entrance is provided, serves as a third floor or floors higher than the third floor, which is or are located in a part at a height of 31 m or less; dimensions of the opening of the rescue entrance are set at a width of 750 mm or more and a height of 1,200 mm or more ϕ1,000 mm or more; and a height from a floor surface to a lower end of the rescue entrance is set at 800 mm or less. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency entrance structure when the outer wall of a building is a glass screen.

[0002]

2. Description of the Related Art For buildings such as buildings, an emergency entrance should be provided so that firefighters, rescue teams, etc. can enter from outside the building for fire fighting and rescue activities in the event of a fire or other emergency. It is required by the Building Standards Law to provide it.

According to Article 126-6 of the Building Standards Act, except for some exceptions such as an elevator being installed as an emergency entrance, the height of a building is 31 meters or more. It is said that there must be an emergency entrance on the 3rd floor and above, and the distance between the entrances is 40 meters or less. The width, height and height of the bottom of the entrance from the floor. However, at least the conditions of being 75 cm or more, 1.2 m or more, and 80 cm or less are obligatory.

It is also said that a circle having a diameter of 1 m or more may be inscribed as a substitute entrance instead of the entrance.

By the way, in recent years, as an outer wall material of a building such as a building, a glass screen incorporating a large number of transparent glass plates having a high-class feeling and capable of producing a bright and open space has been widely adopted.

As the glass screen, each side of a rectangular glass plate is adhered to a sash frame provided on the indoor side by a structural sealing material so that the sash frame is not exposed to the outdoor surface when viewed from the outside. Structured SSG
Adhesive method (Structural Sealant Glazing) or point support method (Dot Poin
t Glazing) etc. have been attracting attention in recent years and are being widely used.

[0007]

When these glass screens extend to higher floors of a building, it is safer to use laminated glass to prevent the glass plates from falling when they break.

However, when the glass screen extends over the third floor and above, the emergency entrances must be provided at predetermined intervals on each of the third and above floors. When the same laminated glass as the part other than the mouth is left, even if the glass plate that constitutes the laminated glass is broken with a hammer etc., it cannot enter because the glass piece is firmly bonded to the interlayer film. .

For this reason, the glass plate serving as the entrance 4 is a single plate glass having a thickness that can be broken in an emergency, or the panel material 7.
However, when the glass plate 1 ′ serving as the entrance 4 is a single plate glass, in order to support the single plate glass 1 ′, the sash frame 5 is provided around the single plate glass 1 ′. In addition, when a panel material other than a glass plate is fitted in the entrance 4, as shown in FIGS. 4 and 5, the opening / closing surrounded by the sash frame 5 is performed in the panel material 7. It is also practiced to provide an entrance 4 made of a free glass plate 1 '.

In particular, when the glass screen 10 is formed by the point support method, the opaque panel material 7 provided for the entrance 4 in the transparent glass plates 1'arranged vertically and horizontally, and Since the sash frame 5 was exposed and scattered, the appearance was very unsightly and was unattractive.

[0011]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above-mentioned problems, that is, when the glass screen is made of laminated glass, the appearance is not unsightly even if an emergency entrance is provided, and the wind pressure The purpose is to be an emergency entrance that can withstand loads.

That is, according to the present invention, when the outer wall of the building is a glass screen composed of a plurality of laminated glass plates standing vertically and horizontally, the glass plate structure of the emergency entrance on the second floor or more is An emergency entrance part is formed as a laminated glass by adhering an indoor side glass and an intermediate film having a circular or rectangular cutout in the center of a glass plate and an outdoor side glass whose entire surface is a glass plate. This is an emergency entrance structure for a glass screen characterized by having a plate configuration.

Alternatively, the present invention is the above-mentioned emergency entrance structure for a glass screen, characterized in that the floor provided with the emergency entrance is three or more floors at a height of 31 m or less. .

Alternatively, in the present invention, the size of the opening of the entrance is 750 mm or more in width and 1200 mm or more in height.
Alternatively, the emergency entrance structure of the above-mentioned glass screen is characterized in that the height from the floor surface to the lower end of the entrance is 80 cm or less, with a diameter of 1000 mm or more.

Alternatively, the present invention is the above-described emergency entrance structure for a glass screen, characterized in that the opening end face portion of the glass plate is mirror-polished.

Alternatively, according to the present invention, as the glass screen, a plurality of glass plates which are vertically and horizontally arranged side by side are provided with perforated portions at four corners, and the perforated portions are tightened with bolts and nuts. It is an emergency entrance structure for the above-mentioned glass screen, which is a glass screen supported by a support fitting that is screwed.

Alternatively, according to the present invention, as the glass screen, a glass screen which is supported by a support fitting inserted through a butt joint without punching holes in a plurality of glass plates which are vertically and horizontally arranged side by side. It is an emergency entrance structure of the above-mentioned glass screen characterized by the following.

Alternatively, the present invention is the emergency entrance structure for a glass screen as described above, characterized in that the glass screen is a glass screen adhesively supported by a structural sealing material.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is, as shown in FIG. 1, located on the second floor or higher in a glass screen 10 composed of a plurality of laminated glass plates 1 in which outer walls of a building are vertically and horizontally arranged side by side. The emergency entrance 4 that can be accessed from the outside in an emergency is provided on the floor.

As shown in FIGS. 2 and 3, the glass plate 1 constituting the glass screen 10 is a laminated glass, but the emergency entrance 4 has an emergency center part of the laminated glass 1. As an entrance portion, a hollow portion is provided in a part of the glass plate 1b on the indoor side that constitutes the laminated glass 1, and the whole glass screen 10 is also the emergency entrance 4 portion of the laminated glass 1 by the hollow portion. Only the part has a single-plate structure including only the glass plate 1a on the outdoor side.

That is, a circular, elliptical, or rectangular cutout is provided in the center of the indoor side glass plate 1b of the laminated glass 1, and the outdoor side glass plate 1a is a whole glass plate without a cutout. Two glass plates 1a, 1b
The intermediate film 3 for adhering the glass plates 1a and 1b to each other has the same shape as the hollowed opening provided on the indoor side glass plate 1b and the hollowed opening at the same position. And the bonding is performed so that the openings are aligned with each other.

The size of the opening of the emergency entrance 4 is
A width of 750 mm or more and a height of 120, which is an opening that allows people such as firefighters and rescue teams to enter it smoothly in an emergency such as a fire.
A substantially rectangular shape of 0 mm or more, a circle inscribed with a circle of φ1000 mm or more, or an ellipse is preferable.

If the height from the floor of the opening of the emergency entrance 4 to the lower end of the entrance is 80 cm or less, firefighters and rescue workers can enter the entrance smoothly and land on the floor smoothly. So desirable.

The floor on which the emergency entrance 4 is provided is not limited to the third floor and above, which is located at a height of 31 m or less defined by the Building Standards Law of Japan, and may be provided on any other floor. You can

Indoor glass plate 1b of the emergency entrance 4
With respect to the opening end face portion, it is preferable in terms of appearance and strength to polish the end face of the opening portion. Particularly, it is most preferable to perform mirror polishing so that the opening is not conspicuous when viewed from the outside.

The outdoor glass plate 1a is preferably a tempered glass of 5 mm or less, or a semi-tempered glass, because it needs a thickness that can withstand wind pressure and the like and can be torn from the outside in an emergency.

The interior glass plate 1b may be any of tempered glass, semi-tempered glass and untempered glass plate,
The plate thickness is preferably 3 mm or more, but is not particularly limited to 3 mm or more.

Indoor glass plate 1b and outdoor glass plate 1a
Examples of the intermediate film 3 for adhering to and include PVB (polyvinyl butyral) film and EVA (ethylene-vinyl acetate copolymer) film.

The glass screen 10 may have any of various types of glass plate supporting structures.

For example, as shown in FIGS. 1 and 2, perforated portions are provided at the four corners of a plurality of glass plates 1, 1, ... DPG method supported by a support fitting 9 that is tightened with bolts and nuts (Do
It can be applied to a glass screen 10 called t Point Glazing).

The support metal fitting 9 is supported by a structure such as a support pillar 8 standing upright with an appropriate interval.

Alternatively, the MPG method (Metal Point Glazing) in which a plurality of glass plates 1, 1 ... ) May be applied to the glass screen 10.

Alternatively, the glass screen 10
The SSG method (Structural method) in which 2 or 4 sides of each glass plate constituting the
It may be used for a glass screen called Sealant Glazing.

In the embodiment of the present invention, one glass plate is arranged vertically in each floor, but a plurality of glass plates may be arranged in each floor.

[0035]

EFFECTS OF THE INVENTION In the conventional glass screen, one glass plate at the emergency entrance portion is surrounded by a sash frame, and an annoying sash frame is unnecessary as compared with an emergency entrance made of an opaque panel material. The overall transparency is good and it looks good both indoors and outdoors.

Further, since only the emergency entrance of the laminated glass is hollowed out, it is possible to increase the area of the glass plate. Since it is a part of the inside, it can withstand wind pressure load sufficiently.

[Brief description of drawings]

FIG. 1 is a perspective view of a glass screen and an entrance of an embodiment of the present invention.

FIG. 2 is a vertical sectional view of an embodiment of the present invention.

FIG. 3 is an enlarged vertical sectional view of the entrance of the embodiment of the present invention.

FIG. 4 is a perspective view of a conventional glass screen and an entrance.

FIG. 5 is a vertical sectional view of a conventional example.

[Explanation of symbols]

1 laminated glass 1a Outdoor glass plate 1b Indoor glass plate 1'glass plate 3 Intermediate film 4 Emergency entrance 5 sash frames 6 floor 7 panel material 8 support pillars 9 Support bracket 10 glass screen

[Procedure amendment]

[Submission date] January 8, 2002 (2002.1.8)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

According to Article 126-6 of the Building Standards Act, a portion of a building with a height of 31 meters or less , with some exceptions such as an elevator being installed as an emergency entrance It is said that there must be an emergency entrance on the 3rd floor and above, and the distance between the entrances is 40 meters or less. The width, height and height of the bottom of the entrance from the floor. However, at least the conditions of 750 mm or more, 1200 mm or more and 800 mm or less are obligatory.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

Alternatively, in the present invention, the size of the opening of the entrance is 750 mm or more in width and 1200 mm or more in height.
Alternatively, the emergency entrance structure of the above-mentioned glass screen is characterized in that the height from the floor surface to the lower end of the entrance is 800 mm or less, with φ of 1000 mm or more.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

If the height from the floor of the opening of the emergency entrance 4 to the lower end of the entrance is 800 mm or less, firefighters and rescue workers can enter the entrance smoothly and land on the floor. So desirable.

Claims (7)

[Claims] 1. When the outer wall of a building is a glass screen composed of a plurality of laminated glass plates which are vertically arranged side by side in a vertical direction, the glass plate structure of the emergency entrance on the second floor or more is arranged in the center of the glass plate. The emergency entrance part is a single plate structure as a laminated glass in which an indoor side glass and an intermediate film having a circular or rectangular hollowed out portion and an outdoor side glass whose entire surface is a glass plate are adhered An emergency entrance structure for glass screens. 2. The floor on which the emergency entrance is provided has a height of 31 m.
The emergency entrance structure for a glass screen according to claim 1, characterized in that the following three or more floors are provided. 3. The size of the entrance opening is 750 m wide.
The emergency entrance structure for a glass screen according to claim 1 or 2, wherein the height from the floor surface to the lower end of the entrance is 80 cm or less. 4. The emergency entrance structure for a glass screen according to claim 1, wherein the opening end face portion of the glass plate is mirror-polished. 5. A support metal fitting as the glass screen, wherein a plurality of glass plates vertically and horizontally arranged side by side are provided with perforations at four corners, and the perforations are screwed together with bolts and nuts. The emergency entrance structure for a glass screen according to any one of claims 1 to 4, wherein the glass screen is supported by the glass screen. 6. The glass screen is a glass screen which is supported by a support metal fitting inserted through a butt joint without being punched in a plurality of glass plates which are vertically and horizontally arranged side by side. Claims 1 to 4
The emergency entrance structure for the glass screen according to any one of 1. 7. The emergency entrance structure for a glass screen according to claim 1, wherein the glass screen is a glass screen adhered and supported by a structural sealing material.