JPH11200536A - Construction structure of flat glass - Google Patents

Abstract

(57) [Abstract] [Problem] To provide a sheet glass construction structure capable of suppressing damage to rib sheet glass due to an earthquake. A face plate glass (1) and a rib plate glass (3) are sealed at a middle portion in the height direction with a high modulus sealing material (1).
At 9, the upper and lower portions are bonded with a low modulus sealing material 20, and the middle portions in the width direction of the upper and lower edges of the face glass 1 and the fixing frames 6 and 7 are sealed at both ends with a high modulus sealing material 16 at both ends. Adhere with the sealing material 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet glass construction having a glass wall composed of a plurality of face glass sheets and a rib sheet glass adhered to the glass wall surface.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing an example of a conventional plate glass construction structure, FIG. 5 is a conceptual diagram showing displacement of a face plate glass and a rib plate glass in FIG. 4 due to an earthquake, and FIG. It is a partial cut-away perspective view showing an example of a rib plate glass support means.

[0003] In recent years, examples of forming a large glass screen by applying a plate glass construction structure to an opening of a building such as a building have been increasing in terms of lighting, visibility, and the like. In the construction structure of sheet glass shown in FIGS. 4 and 5,
The side walls of a plurality of upright face glazings 1 are abutted to constitute a glass wall surface 2 that separates the interior A side and the exterior B side of the building. Further, a rib plate glass 3 orthogonal to the glass wall surface 2 is disposed on the room A side of the glass wall surface 2 so as to be along a butt portion of the adjacent face plate glass 1.

[0004] A sealing material 4 is filled between the adjacent face glass 1 and between the face glass 1 and the rib glass 3 over the entire length in the height direction. And the outdoor B side end of the rib plate glass 3 are bonded to each other. As the sealing material 4, a high modulus material having sufficient tensile strength, shear strength and adhesive strength against a force such as wind pressure acting on the glass wall surface 2 is used.

[0005] Face plate glass 1 and rib plate glass 3
The upper edge of the frame 5 is fitted to a fixing frame 6 attached to the upper edge of the opening of the skeleton 5. The lower edges of the face glass 1 and the rib glass 3 are fixed to the lower edge of the opening of the skeleton 5. It is fitted to the frame 7.

[0006] Between the upper edge of the face glass 1 and the fixed frame 6 and between the lower edge of the face glass 1 and the fixed frame 7.
The sealing material 8 is filled over the entire length of the upper and lower edges of the face glass 1, and the upper and lower edges of the face glass 1 and the fixed frames 6 and 7 are bonded to each other by the sealing material 8. As the sealing material 8, a material having a low modulus is used.

[0007] In the above-mentioned sheet glass construction structure, FIG.
As shown in FIG. 5, the upper fixed frame 6 is displaced to the left C side due to an earthquake or the like, and the lower fixed frame 7 is displaced to the right D side relatively to the displacement of the fixed frame 6. When the skeleton 5 is tilted, an interlayer displacement of a displacement X occurs between the upper and lower fixed frames 6 and 7.
At this time, between the upper and lower portions of the rib plate glass 3, which is not allowed to slide in the horizontal direction along the glass wall surface 2 with respect to the fixed frames 6 and 7, the interlayer displacement having a displacement amount substantially equal to the displacement amount X is also generated. Occurs.

The amount of interlayer displacement Y generated between the upper part and the lower part of the face glass 1 depends on the restraining force of the high modulus sealing material 4 bonding the adjacent face glass 1 and the weight of the face glass 1. Under the influence of the inertia force, the fixed frames 6 and 7 tend to be smaller than the displacement X of the interlayer displacement. However, in practice, the face glass 1 and the rib glass 3 are bonded with a high modulus sealing material 4, so that in the middle portion in the height direction of the rib glass 3 excluding the upper and lower portions, the relevant portion is the face glass 1. Trying to displace following the middle portion in the height direction.

Therefore, in the rib plate glass 3, a portion near the upper portion located between the upper portion displaced with the fixed frame 6 and the intermediate portion displaced following the face plate glass 1, and the lower portion displaced with the fixed frame 7 and the face plate glass A large bending load is applied to a portion near the lower portion located between the intermediate portion that is displaced following 1. This allows
As shown in FIG. 5, the rib plate glass 3 has a tendency to deform substantially in an S shape, and when the deformation amount of the frame 5 is large, there is a concern that the rib plate glass 3 may be damaged.

[0010] A rib plate glass supporting means capable of suppressing damage to the rib plate glass 3 due to such deformation of the frame 5 has been proposed (JP-A-56-3784). In the proposed rib plate glass supporting means, as shown in FIG. 6, the upper portion of the rib plate glass 3 is engaged with the upper edge (not shown) of the opening of the frame 5 to suspend the rib plate glass 3, and At the lower edge, setting block 9, backup material 10,
A lower frame 12 is externally fitted via a sealing material 11.
Further, a fixed frame 13 into which the lower frame 12 is loosely fitted is fixed to the lower edge of the opening of the frame 5 so that the lower frame 12 can slide in the thickness direction of the rib sheet glass 3. , Lower frame 12
An elastic member 14 is interposed between the frame and the fixed frame 13.

That is, in the rib plate glass supporting means, the upper and lower portions of the rib plate glass 3 are not fixed to the frame 5. Therefore, when the frame 5 is deformed as described above, the upper and lower portions of the rib plate glass 3 are displaced following the face plate glass 1 (see FIGS. 4 and 5), and the rib plate glass 3 is damaged by the bending load. Can be avoided.

[0012]

However, the rib plate glass support means shown in FIG. 6 has not been widely used because its structure is complicated, assembly work cannot be performed in a short time, and construction cost is expensive. The present invention has been made in view of the above-described circumstances, and has as its object to provide a sheet glass construction structure capable of suppressing damage to a rib sheet glass due to an earthquake with a simple structure.

[0013]

SUMMARY OF THE INVENTION According to the present invention, a plurality of upright face plate glasses are formed so that the side edges thereof abut each other to form a glass wall surface, and one side edge of a rib plate glass disposed at right angles to the glass wall surface. Glued to the glass wall surface to support the glass wall surface, the upper and lower edges of the face plate glass and rib plate glass are fitted to the fixed frames provided at the upper and lower edges of the opening of the frame, and the upper and lower edges of the face plate glass are bonded to the fixed frame JIS A5758, the height direction intermediate portion of the butted portion between the face plate glass and the rib plate glass in the plate glass construction structure described above.
The upper and lower portions excluding the middle portion in the height direction of the abutting portion between the face plate glass and the rib plate glass are bonded by a high modulus sealing material having a 50% modulus tensile stress of 4 kgf / cm ² or more according to the described tensile adhesion test. The tensile stress at 50% modulus according to the above test is 0.5
adhered by kgf / cm ² or more and 2 kgf / cm ² under a is low modulus sealant, adhered by a high modulus sealant which the width direction intermediate portion of the upper and lower edge portions of the face plate glass fixing frame described above, face Provided is a construction structure for a sheet glass, characterized in that both ends of the upper and lower edges of the sheet glass except for a widthwise intermediate portion and a fixed frame are bonded by the above-mentioned low modulus sealing material.

Further, a plurality of setting blocks are provided between the groove bottom of the fixed frame at the lower edge of the opening of the frame and the lower edge of the face glass, and the setting blocks are arranged from the edge of the lower edge of the face glass. Provided is a construction structure of the above-mentioned sheet glass interposed so as to be positioned at a position closer to an intermediate portion in the width direction by one fifth or more of the width of the face sheet glass.

[0015] In the plate glass construction structure of the present invention, the modulus of the sealing material for bonding the members of the face plate glass, the rib plate glass, and the fixed frame is selectively used so as to reduce the bending load on the rib plate glass due to the earthquake. Suppress damage to sheet glass. Further, in the sheet glass construction structure of the present invention, the position of the setting block interposed between the fixed frame and the lower edge of the face sheet glass is set at 5 mm of the width of the face sheet glass from the end of the lower edge of the face sheet glass.
The bending load on the rib sheet glass due to the earthquake is effectively reduced by setting the position closer to the middle part in the width direction by one or more.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of an embodiment of a sheet glass construction structure according to the present invention, and FIGS. 2 and 3 are conceptual views showing displacement of a face sheet glass and a rib sheet glass in FIG. 1 due to an earthquake or the like. 1 to 3, a glass wall surface 2, a rib plate glass 3, and fixing frames 6 and 7 formed by a face plate glass 1 are the same as those shown in FIGS. 4 to 6, and are the same as those shown in FIGS. 4 to 6. Parts denoted by the same reference numerals represent the same items.

In the sheet glass construction shown in FIG. 1, the low-modulus sealing materials 17 and 20 and the high-modulus sealing materials 16 and 19 are used for bonding the members to each other.
And are used.

The modulus of the sealing material is JIS A
It is determined based on the tensile adhesion performance test described in 5758 “Sealing material for building”. In this tensile adhesion performance test,
A pair of adherends of a two-type specimen specified in the JIS standard are adhered by a sealing material to be tested. After a predetermined curing period has elapsed and the sealing material has changed to a solid state, the pair of adherends is pulled in a direction away from each other, and the length of the sealing material is increased by 50% from the length before the test (before the test). The tensile stress when it becomes 150% with respect to
The tensile stress of the sealing material is evaluated in terms of% modulus tensile stress.

Here, the high modulus sealing material is
50% modulus tensile stress of 4 kgf / cm ² or more, low modulus sealing material is 2 kgf / cm 2
Less than ^two . A typical example of the high modulus sealing material is a silicone-based material such as a deacetic acid type, a deoxime type, and a dealcohol type. Representative examples of the low modulus sealing material include those mainly composed of a silicone-based material such as a deamidated type or a deaminoxy type.

In evaluating the 50% modulus tensile stress of the sealing material 15, a pair of adherends of the above-mentioned two-type test specimen are formed of a glass plate or an aluminum alloy plate. The failure mode of the sealing material in the tensile adhesion performance test is considered to be cohesive failure in which the sealing material breaks and interfacial peeling in which the bonding surface of the sealing material peels off from the adherend. It is not suitable as a bonding means between the face glass 1 and the rib glass 3.

A sealing member 16 is provided between the fixed frame 6 and the widthwise middle portion of the upper edge of the face glass 1 and between the widthwise middle portion of the lower edge of the face glass 1 and the fixed frame 7. Is filling. That is, the widthwise intermediate portions of the upper and lower edges of the face sheet glass 1 and the fixed frames 6 and 7 are bonded to each other by the high modulus sealing material 16. As the sealing material 16, a material having a 50% modulus and a tensile stress of 4 kgf / cm ² or more is used. In consideration of the safety factor, the tensile strength of the sealing material 16 including the adhesive strength is preferably 2.5 kgf / cm ² or more.

The fixed frame 6 is located between both ends of the upper edge portion of the face glass 1 except for the middle portion in the width direction and the fixed frame 6, and between the both ends of the lower edge portion of the face glass 1 except for the middle portion in the width direction and the fixed frame 7. The space between them is filled with a sealing material 17. In other words, both sides of the upper and lower edges of the face glass 1 except for the widthwise intermediate portion and the fixed frames 6 and 7 are bonded to each other by the low modulus sealing material 17.

The present invention is particularly effective when the face glass 1 is rectangular and the horizontal dimension is longer than the vertical dimension. That is, when the face glass 1 has a horizontally long shape, both ends of the face glass 1 rise greatly when subjected to an earthquake. Therefore, by setting the modulus to be low, both ends in the width direction of the face glass 1 and the fixing frames 6 and 7 are formed.
The sealing material 17 can follow a large shear deformation, and the face glass is made to have a high modulus for the middle portion in the width direction of the face glass 1 and the sealing material 16 of the fixing frames 6 and 7, so that the face glass has almost the same interlayer displacement as the frame and the rib glass. The amount X is generated, and the movement of the face glass plate and the rib plate glass during the earthquake is substantially the same.

As shown in FIG. 3, a plurality of setting blocks are provided between the lower edge of the face glass 1 and the groove bottom of the fixed frame 7 into which the lower edge of the face glass 1 is fitted. 18 are interposed. The setting block 18 is installed so as to be located at a position closer to the widthwise middle portion in the width direction of the face plate glass 1 by at least one-fifth of the width of the face plate glass 1 from the widthwise end of the lower edge portion of the face plate glass 1. At this time, the displacement X between the fixed frames 6 and 7 is substantially equal between the upper and lower portions of the rib plate glass 3 which is not allowed to slide along the glass wall surface 2 with respect to the fixed frames 6 and 7. The interlayer displacement of the displacement amount occurs.

The widthwise middle portions of the upper and lower edges of the face glass 1 are bonded to the fixed frames 6 and 7 with a high modulus sealing material 16 and both sides are bonded with a low modulus sealing material. Between the upper and lower portions of the sheet glass 1, an interlayer displacement having a displacement substantially equal to the displacement X between the fixed frames 6 and 7 is generated.

The fixing blocks 6, 7 can also be provided by setting the setting block 18 so as to be located near the widthwise intermediate portion of the lower edge of the face plate glass 1.
Synchronization of the interlayer displacement of the upper and lower edges of the face glass 1 with respect to the interlayer displacement is achieved. Furthermore, face glass 1
The rib plate glass 3 is bonded with a high modulus sealing material 19 at the middle portion in the height direction of the butted portion of the rib plate glass 3 and a low modulus sealing material 20 on the upper and lower sides thereof. Does not work.

A high modulus sealing material 19 having a 50% modulus tensile stress of 4 kgf / cm ² or more is provided between the height middle portions of the butted portions of the face glass 1 and the rib glass 3. Between the upper and lower ends of the butted portion of the face plate glass 1 and the rib plate glass 3 except for the intermediate portion in the height direction, the tensile stress of 50% modulus described above is 0.5 kgf / cm.
It is filled with a low modulus sealing material 20 of ² or more and less than 2 kgf / cm ² , and has a sufficient tensile strength against a negative pressure acting on the outdoor B side of the glass wall surface 2 due to wind or the like. To do.

That is, high modulus sealing material 1
9, the middle part in the height direction of the butted portion of the face glass 1 and the rib glass 3 is bonded to each other, and the height of the butted portion of the face glass 1 and the rib glass 3 is bonded by the low modulus sealing material 20. The upper and lower ends except for the middle part in the direction are adhered to each other.

In the above-described construction of the flat glass, since the relative displacement of the members at the intermediate portion in the height direction of the abutting portion of the face glass 1 and the rib glass 3 due to an earthquake or the like is very small, both members are sealed by the sealing material 19. Even if the middle part in the height direction of the side edges of the plate glasses 1 and 3 is bonded,
A large bending load does not act on the rib sheet glass 3.

As shown in FIG. 2, when a negative pressure F due to the influence of wind or the like acts on the surface of the glass wall surface 2 on the outdoor B side, the face sheet glass 1 is bonded by the adhesive force of the high modulus sealing material 19. The deformation of the middle portion in the height direction to the outdoor B side is suppressed. Therefore, in the plate glass construction structure shown in FIG. 1, damage to the rib plate glass 3 due to the influence of an earthquake or the like can be suppressed, and the wind resistance of the glass wall surface 2 can be increased.

Incidentally, the construction structure of the sheet glass of the present invention is not limited to only the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, the upper edges of the face glass 1 and the rib glass 3 are fixed frame 6
, And the upper edges of both the glass sheets 1 and 3 may be suspended from the upper edge of the opening of the frame 5. In this case, the setting block 18 does not need to be interposed between the lower edge of the face plate glass 1 and the fixed frame 7.

Further, a plurality of sets of sheet glass construction structures are arranged in different directions, and face glass sheets 1 at the ends of the construction structures of each sheet glass are abutted to form corner wall surfaces of the building. Is also good. Further, the rib plate glass 3 may be provided on both the indoor A side and the outdoor B side of the glass wall surface 2 to support the glass wall surface 2.

[0033]

As described above, the sheet glass construction structure of the present invention can provide various excellent effects as described below. (1) The modulus of the sealing material to which the face glass, the rib glass, and the fixed frame are bonded is properly used so that the bending load on the rib glass due to the earthquake is reduced. Can be suppressed, and the outer wall construction can be simplified and speeded up. (2) Further, the position of the setting block interposed between the fixed frame and the lower edge of the face glass is set to be at least one-fifth of the width of the face glass from the edge of the lower edge of the face glass. By making it closer to the part, the bending load on the rib sheet glass due to the earthquake can be effectively reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of a sheet glass construction structure of the present invention.

FIG. 2 is a conceptual diagram showing displacement of the face plate glass and the rib plate glass in FIG. 1 due to an earthquake or the like.

FIG. 3 is a conceptual diagram showing displacement of the face plate glass and the rib plate glass in FIG. 1 due to an earthquake or the like.

FIG. 4 is a perspective view showing an example of a conventional plate glass construction structure.

FIG. 5 is a conceptual diagram showing displacement of the face plate glass and the rib plate glass in FIG. 4 due to an earthquake or the like.

FIG. 6 is a partially cutaway perspective view showing an example of a conventionally proposed rib plate glass supporting means.

[Explanation of symbols]

 1: face glass 2: glass wall 3: rib glass 5: frame 6: fixed frame 7: fixed frame 16: sealing material (high modulus) 17: sealing material (low modulus) 18: setting block 19: sealing material (high modulus) 20) Sealing material (low modulus)

Claims (2)

[Claims] 1. A glass wall surface is formed by abutting the side edges of a plurality of upright face plate glasses, and one side edge of a rib plate glass disposed orthogonal to the glass wall surface is bonded to the glass wall surface. The upper and lower edges of the face plate glass and the rib plate glass are fitted to the fixed frames provided at the upper and lower edges of the opening of the frame, and the upper and lower edges of the face plate glass are bonded to the fixed frame in the construction structure of the sheet glass, A 50% modulus tensile stress of 4 kgf / c according to a tensile adhesion test described in JIS A5758 was applied to a middle portion in the height direction of the butted portion of the face plate glass and the rib plate glass.
Adhesion with a high modulus sealing material of at least m ² , 50% of the upper and lower parts of the butted part of the face plate glass and rib plate glass excluding the middle part in the height direction according to the above test
The low modulus sealing material having a modulus of tensile stress of 0.5 kgf / cm ² or more and less than 2 kgf / cm ² is adhered to each other. A sheet glass construction structure, wherein the fixed frame is bonded to both ends of the face plate glass except for an intermediate portion in the width direction of the upper and lower edges of the face plate glass with the low modulus sealing material. 2. A plurality of setting blocks are provided between a groove bottom of a fixed frame at a lower edge of an opening of a frame and a lower edge of a face glass. One fifth of the width of the face glass
The sheet glass construction structure according to claim 1, wherein the construction is provided so as to be positioned closer to the middle portion in the width direction.