JP3860027B2 - Glass screen emergency entrance structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an emergency entrance structure when the outer wall of a building is a glass screen.
[0002]
[Prior art]
For buildings such as buildings, it is necessary to provide emergency entrances so that firefighters, ambulance teams, etc. can extinguish fires and other emergency situations in case of a fire or other emergency. Mandatory by law.
[0003]
According to a sixth Article 126 of the Building Standards Law, as an emergency the entrance, except for some exceptions, such as the elevator or the like is installed, at a height 31 meters or less part of the building three It is said that emergency entrances must be provided on the floors above the floor, the distance between the entrances is 40 meters or less, and the width and height of the entrances and the height from the floor at the bottom are respectively The condition that it is 750 mm or more, 1200 mm or more, and 800 mm or less is required at least.
[0004]
In addition, a circle having a diameter of 1 m or more may be inscribed as a substitute entrance instead of the entrance.
[0005]
By the way, in recent years, many glass screens incorporating a lot of transparent glass plates that have a high-class feeling and can produce a bright and open space have been adopted as exterior wall materials for buildings such as buildings.
[0006]
As the glass screen, each side of a rectangular glass plate is adhered to a sash frame provided on the indoor side with a structural sealing material, so that the sash frame is not exposed to the outdoor surface when viewed from the outside. The SSG bonding method (Structural Sealant Glazing) and the point support method (Dot Point Glazing) in which a glass plate is supported by a metal point support fitting have been attracting attention and are often used in recent years.
[0007]
[Problems to be solved by the invention]
When these glass screens reach the higher floors of a building, it is effective for safety to use laminated glass in order to prevent the glass plate from falling when it breaks.
[0008]
However, when the glass screen extends to three or more floors, the emergency entrances must be provided at predetermined intervals on each of the third and higher floors. When the same laminated glass as the part is left, even if the glass plate constituting the laminated glass is broken with a hammer or the like, the glass piece is firmly adhered to the intermediate film and cannot enter.
[0009]
For this reason, although the glass plate used as the entrance 4 is inserted into the single plate glass having a thickness that can be broken in an emergency or the panel material 7, the glass plate 1 ′ used as the entrance 4 is a single plate glass. In order to support the single glass sheet 1 ′, a sash frame 5 must be provided around the single glass sheet 1 ′, and a panel material other than the glass sheet is fitted into the entrance 4. In this case, as shown in FIGS. 4 and 5, an entrance 4 made of an openable and closable glass plate 1 ′ surrounded by a sash frame 5 is provided in the panel material 7.
[0010]
In particular, when the glass screen 10 is formed by the point support method, the opaque panel material 7 and the sash frame 5 provided for the entrance 4 in the transparent glass plate 1 ′ arranged side by side in the vertical and horizontal directions. Were exposed and scattered, and the appearance was very unsightly and unsightly.
[0011]
[Means for Solving the Problems]
The present invention seeks to solve the above-mentioned problems, that is, when the glass screen has a laminated structure, the emergency entrance is not unsightly in appearance and can withstand wind pressure load even if an emergency entrance is provided. It aims to be.
[0012]
That is, when the present invention is a glass screen composed of a plurality of laminated glass plates that are erected side by side in the vertical and horizontal directions, the glass plate configuration of the emergency entrance on the second floor or higher is A single-plate configuration of the emergency entrance as a laminated glass in which an indoor side glass and an intermediate film having an opening hollowed in a circular shape or a rectangular shape at the center and an outdoor side glass whose entire surface is a glass plate are bonded together This is an emergency entrance structure for a glass screen.
[0013]
Alternatively, the present invention is the above-described emergency entrance structure for a glass screen, wherein the floor on which the emergency entrance is provided is a floor of 3 floors or more in a portion having a height of 31 m or less.
[0014]
Alternatively, the present invention is characterized in that the size of the opening of the entrance is 750 mm or more in width, 1200 mm or more in height, or φ1000 mm or more, and the height from the floor surface to the lower end of the entrance is 800 mm or less. It is the emergency entrance structure of the above-mentioned glass screen.
[0015]
Alternatively, the present invention is the emergency entrance structure for a glass screen described above, wherein the opening end surface portion of the glass plate is mirror-polished.
[0016]
Alternatively, in the present invention, the glass screen is provided with perforations at the four corners of a plurality of glass plates arranged side by side vertically and horizontally, and the perforations are screwed together with bolts and nuts. The above-described emergency entrance structure for a glass screen, which is a glass screen supported by a support metal fitting.
[0017]
Alternatively, the present invention is a glass screen that is supported by a support fitting that is inserted through a butt joint portion without perforating a plurality of glass plates that are arranged vertically and horizontally as the glass screen. An emergency entrance structure for a glass screen as described above.
[0018]
Alternatively, the present invention is the above-described emergency entrance structure for a glass screen, wherein the glass screen is a glass screen bonded and supported by a structural sealing material.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the present invention provides a glass screen 10 composed of a plurality of laminated glass plates 1 in which the outer walls of a building are arranged side by side in the vertical and horizontal directions. The emergency entrance 4 that can be entered is provided.
[0020]
As shown in FIGS. 2 and 3, the glass plate 1 constituting the glass screen 10 is made of laminated glass, but the emergency entrance 4 is a part of the central portion of the laminated glass 1 that is an emergency entrance portion. As described above, a hollow portion is provided in a part of the indoor side glass plate 1b constituting the laminated glass 1, and only the hollow portion which is the emergency entrance 4 portion even if the laminated glass 1 is formed in the laminated glass 1 by the hollow portion. A single-plate configuration of only the outdoor glass plate 1a is used.
[0021]
In other words, a circular, elliptical, or rectangular opening is provided in the center of the indoor side glass plate 1b of the laminated glass 1, and the outdoor glass plate 1a has two full-surface glass plates without a hollow portion. The glass plates 1a and 1b are bonded by the intermediate film 3. The intermediate film 3 for bonding the glass plates 1a and 1b to each other has the same shape as the hollow opening provided in the indoor glass plate 1b. The openings are cut out at the same position, and the openings are bonded so that the openings coincide with each other.
[0022]
The size of the opening of the emergency entrance 4 is a substantially rectangular shape having a width of 750 mm or more and a height of 1200 mm or more, which is an opening that can be smoothly inserted by a person such as a firefighter or rescue team in an emergency such as a fire. Or it is good to set it as the circle | round | yen which the circle | round | yen of 1000 mm or more inscribed, or an ellipse.
[0023]
In addition, if the height from the floor of the opening of the emergency entrance 4 to the lower end of the entrance is set to 800 mm or less, it is desirable that firefighters and rescue workers can enter the entrance smoothly and land on the floor.
[0024]
The floor where the emergency entrance 4 is provided is not limited to three or more floors at a height of 31 m or less as stipulated in the Building Standards Act of Japan, and may be provided on any other floor. good.
[0025]
Regarding the opening end surface portion of the indoor side glass plate 1b of the emergency entrance 4, it is preferable in terms of appearance and strength to polish the end surface of the opening portion. In particular, mirror polishing is most preferable so that the opening is not noticeable when viewed from the outdoor side.
[0026]
About the outdoor side glass plate 1a, since it needs the plate | board thickness which can endure wind pressure etc. and is torn from the outdoor side at the time of emergency, 5 mm or less tempered glass or semi-tempered glass is desirable.
[0027]
The indoor side glass plate 1b may be any of tempered glass, semi-tempered glass, and unstrengthened glass plate, and the thickness is preferably 3 mm or more, but is not particularly limited to a thickness of 3 mm or more.
[0028]
Examples of the intermediate film 3 for bonding the indoor side glass plate 1b and the outdoor side glass plate 1a include PVB (polyvinyl vinyl butyral) film, EVA (ethylene-vinyl acetate copolymer) film, and the like.
[0029]
The glass screen 10 may be any of various types of glass plate support structures.
[0030]
For example, as shown in FIG. 1 and FIG. 2, holes are provided at the four corners of a plurality of glass plates 1, 1,. It can apply to the glass screen 10 called the DPG construction method (Dot Point Glazing) supported by the support metal fitting 9 screwed in.
[0031]
The support fitting 9 is supported by a structure such as a support column 8 standing at an appropriate interval.
[0032]
Alternatively, it is called the MPG method (Metal Point Glazing) that is supported by a support fitting inserted through the butt joint, without making holes in the plurality of glass plates 1, 1,. You may apply to the glass screen 10. FIG.
[0033]
Alternatively, it may be used for a glass screen called an SSG method (Structural Sealant Glazing) in which two or four sides of each glass plate constituting the glass screen 10 are bonded and supported by a structural sealing material.
[0034]
In the embodiment of the present invention, one glass plate is arranged in the vertical direction for each floor, but a plurality of glass plates may be arranged for each floor.
[0035]
【The invention's effect】
Compared to the emergency entrance made of opaque panel material or the like, one glass plate at the emergency entrance part in the conventional glass screen is surrounded by a sash frame, and the sash frame is not obstructive, and the entire perspective view It is good and looks good from the inside and outside.
[0036]
Furthermore, since the single-plate structure is formed by hollowing out only the emergency entrance of the laminated glass, the area of the glass plate can be increased, and even if the area is large, the single plate portion that is the emergency entrance is one of them. Because it is a part, it can sufficiently withstand the wind pressure load.
[Brief description of the 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 longitudinal sectional view of an embodiment of the present invention.
FIG. 3 is an enlarged longitudinal sectional view of an entrance of an embodiment of the present invention.
FIG. 4 is a perspective view of a conventional glass screen and an entrance.
FIG. 5 is a longitudinal sectional view of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Laminated glass 1a Outdoor side glass plate 1b Indoor side glass plate 1 'Glass plate 3 Intermediate film 4 Emergency entrance 5 Sash frame 6 Floor part 7 Panel material 8 Support pillar 9 Support metal fitting 10 Glass screen

Claims (7)

When the outer wall of the building is made into a glass screen consisting of multiple laminated glass plates arranged side by side vertically and horizontally, the glass plate configuration of the emergency entrance on the second floor or more is circular in the center of the glass plate or The emergency entrance has a single plate configuration as a laminated glass in which an indoor side glass and an intermediate film having a rectangular opening and an outdoor side glass whose entire surface is a glass plate are bonded together. Glass screen emergency entrance structure. 2. The emergency entrance structure for a glass screen according to claim 1, wherein the floor on which the emergency entrance is provided is a floor of 3 floors or more in a portion having a height of 31 m or less. The size of the opening of the entrance is 750 mm or more in width, 1200 mm or more in height, or 1000 mm or more in height, and the height from the floor surface to the lower end of the entrance is 800 mm or less. Glass screen emergency entrance structure. The emergency entrance structure for a glass screen according to any one of claims 1 to 3, wherein the opening end surface portion of the glass plate is mirror-polished. As the glass screen, a glass supported by a support fitting provided with a perforated portion at four corners of a plurality of glass plates arranged side by side vertically and horizontally, and the perforated portion is tightened and screwed with a bolt and a nut. The emergency entrance structure for a glass screen according to any one of claims 1 to 4, wherein the emergency entrance structure is a screen. The glass screen is a glass screen that is supported by a support fitting that is inserted into a butt joint portion without making a hole in a plurality of glass plates that are arranged side by side vertically and horizontally as the glass screen. The emergency entrance structure of the glass screen as described in any one of thru | or 4. The emergency entrance structure for a glass screen according to any one of claims 1 to 4, wherein the glass screen is a glass screen bonded and supported by a structural sealant.

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