JPH11200534A - Execution structure of plate glass at corner section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain aseismicity, to prevent the damage of design properties and corner shape retention at the time of normality and to improve the allowable coefficient of deformation of sealing section. SOLUTION: Both end sections in the height direction of a corner side, in which plate glass 1, 1, 2 is abutted and bonded with sealing materials 5, 8, are fitted to fixing frames 4b. The deformation rate of the sealing material 8 in the vicinity of a center in the corner-side height direction as the sealing material of the abutting sections is made smaller than that of the sealing material 5 in sections excepting the section in the vicinity of the central section at the time of specified tensile stress at that time.

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 structure which is hardly damaged by an earthquake or the like, and more particularly, to a corner plate glass construction structure in a structure using a plurality of large glass sheets.

[0002]

2. Description of the Related Art In recent years, a large number of sheet glass constructions have been constructed in which openings of buildings such as buildings are formed by large glass screens. As shown in FIG. 4, this construction structure is configured by joining a sheet glass constituting a wall surface having upper and lower ends fixed thereto, that is, a face glass 1 and a rib glass 2 orthogonal thereto, with a sealing material 6. The lower ends of the face glass 1 and the rib glass 2 are attached to a lower fixing frame 4b.
, And the upper end is similarly fitted into the upper fixed frame. Further, at the corners, the corner glasses 3a and 3b are abutted and joined by the sealing material 6.

The sealing material 6 has a high modulus (high elastic modulus) having sufficient tensile strength, shear strength, and adhesive strength against a force such as wind pressure acting in an out-of-plane direction of the face glass 1 (direction in which a corner portion is separated). Is used. By joining the glass with a high modulus sealing material, the corner sides are regarded as supporting sides, and the face glass 1 and the corner glasses 3a, 3b are thinned.
Hardware or the like that supports the corners can be eliminated.

[0004]

FIG. 5 shows the displacement of the corner glasses 3a and 3b at the corners when such a conventional structure causes interlayer displacement in the frame due to an earthquake or the like. As shown in FIG. 5, the upper and lower ends of the corner glass 3b are fitted into the fixed frame of the frame 7. Therefore, when the frame undergoes interlayer displacement due to an earthquake or the like, a force in the direction D is generated on the upper fixed frame 4a side and a force in the direction E is generated on the lower fixed frame 4b side of the frame. At this time, the frame is inclined in the CC direction and displaced by the displacement X, and the upper and lower ends of the corner glass 3b produce the same interlayer displacement X as the frame 7.

On the other hand, since the corner glass 3a receives the constraint of the sealing material 6 between the adjacent face glass 1 and the inertia force due to the weight of the sheet glass itself, the corner glass 3a has a smaller interlayer glass displacement X than the corner glass 3a. Generally, the interlayer displacement amount Y tends to be small. That is, as an original phenomenon, the corner glass 3a and the corner glass 3b tend to move differently during an earthquake.

At this time, a load for absorbing the above-described movement is applied to the sealing material on the corner side due to the action of trying to move differently as described above on the corner sides of the corner glass 3a and the corner glass 3b. . That is, if the width of the sealing material at the corner side is W, and the difference between the interlayer displacement amount X of the corner glass 3b and the interlayer displacement amount Y of the corner glass 3a is 2δ, the deformation of the sealing material at the corner side is W + δ at the upper part, In the lower part, it becomes W-δ.

Here, in general, the deformation rate of the sealing material during an earthquake is designed to be 15% or less for a high modulus sealing material and 30% or less for a low modulus or medium modulus sealing material. In view of wind resistance, a high modulus sealing material is used. Particularly preferably, a silicone sealing material is used.

[0008] In particular, the corner glasses 3a, 3b
When the corner sides are joined with a high modulus seal material, a large tensile load is applied to the seal material at the upper end portion and a large compressive load is applied to the lower end portion of the corner glass due to a difference in interlayer displacement between the corner glasses 3a and 3b. In some cases, the amount of deformation of the seal material at the corner side exceeds the allowable deformation rate, and therefore, an extremely large seal width is required,
There was a problem of impairing the design.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to improve the allowable deformation rate of the seal portion without deteriorating the design characteristics and the normal shape retention of the corner portion, while improving the seismic resistance. It is an object of the present invention to provide a sheet glass construction structure, and further to provide a sheet glass construction structure in a corner portion having improved seismic performance without impairing wind resistance performance.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to provide a construction structure for a sheet glass having a structure in which both ends in the height direction of the corner side where the sheet glass is abutted and bonded with a sealing material are fitted into a fixed frame. Wherein, at a predetermined tensile stress, the sealing material of the butted portion has a deformation ratio in the vicinity of the center in the height direction of the corner side smaller than that in the portion other than the vicinity of the center, and the sheet glass construction structure of the corner portion is characterized in that Achieved by the body.

Further, in such a structure, JI
When tested by a tensile adhesion test specified in SA5758, a 50% modulus tensile stress is 4 kgf / cm ² or more in the vicinity of the center of the sealing material, and the 50% modulus is 50% in a portion other than the vicinity of the center. can modulus of tensile stress is configured is less than 0.5 kgf / cm ² or more and 4 kgf / cm ^2.

Another object of the present invention is to provide a sheet glass construction structure in which both ends of a corner side of a corner portion of a sheet glass which are abutted and bonded with a sealing material are fitted into a fixed frame. When the sealing material at the abutting portion is tested by a tensile adhesion test specified in JIS A5758, the 50% modulus tensile stress is 0.5 kgf / cm ² or more and less than 4 kgf / cm ^2. This is also achieved by the sheet glass construction structure at the corners.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a main part of an embodiment of a sheet glass construction structure according to the present invention, in which a face glass 1 whose upper and lower ends are fixed to a fixed frame (not shown) and a rib glass 2 orthogonal thereto are sealing materials. 5 and 8 are joined. Further, at the corners, the corner glasses 3 a, 3 b are butted and joined by the sealing materials 5, 8. The sealing material has a 50% modulus tensile stress of 4 kgf / near the center in the height direction of the corner side.
cm ² or more, a so-called high modulus sealing material (silicone sealing material) 8, and the other parts
A sealing material having a% modulus tensile stress of 0.5 kgf / cm ² or more and less than 4 kgf / cm ² , that is, a so-called medium modulus or low modulus sealing material (silicone-based sealing material) 5 is used.

As the high modulus or middle modulus sealing material, a material mainly composed of a silicone-based material such as a deacetic acid type, a deoxime type, and a dealcohol type is exemplified. A typical example of the low modulus sealing material is a silicone-based material such as a deamidated or deaminoxy type.

The lower ends of the face glass 1, the rib glass 2, and the corner glasses 3a, 3b are
b, a face glass and a corner glass are placed on a setting block (not shown) installed in the lower fixed frame, and the lower fixed frame 4 b is embedded in the floor surface forming the frame 7. . Face glass (plate glass) 1, rib glass 2, and corner glass 3a,
The upper end of 3b is fitted into the upper fixed frame 4a.

The state of the displacement occurring in the corner glass when the sheet glass construction structure of FIG. 1 is subjected to interlayer displacement due to an earthquake or the like is the same as in FIG. 5 shown in the conventional example. That is, a force in the direction D acts on the upper fixed frame 4a side of the skeleton, a force in the direction E acts on the lower fixed frame 3b side of the skeleton, and
When it is tilted in the direction and displaced by the interlayer displacement X, the upper and lower ends of the corner glass 3b produce the same interlayer displacement X as the frame 7. On the other hand, the interlayer displacement Y of the corner glass 3a tends to be smaller than the interlayer displacement X.

At this time, since the amount of displacement of the seal material near the center of the corner is smaller than the amount of displacement at both ends, even if the amount of displacement at both ends exceeds the allowable displacement of the high modulus seal material. With the high modulus sealing material 8 arranged near the center, the displacement can be kept to a sufficiently allowable level.

The tensile stress of the upper and lower 50% modulus near the center in the height direction of the corner of the sheet glass at the abutting portion of the corner of the sheet glass is 0.5 kgf /.
cm ² or more and the height direction of the glass sheet upper part of the region using 4 kgf / cm ² less than the sealing material, and the length from the lower end, the design wind pressure, height, width, and thickness of the glass plate of the construction structure The optimum length is appropriately designed depending on the interlayer deformation angle and the like.
About / 4L to 1 / 5L, and 1 / 4L to 1/5 from the lower end
L is practical.

As described above, when the interlayer displacement occurs in the frame due to an earthquake or the like, the corner glass 3a, 3
The displacement of b is a 50% modulus tensile stress of 0.5 kg.
By using a sealing material of f / cm ² or more and less than 4 kgf / cm ² at both ends in the height direction (upper and lower parts other than the center part), a large tensile load at the upper end applied to the sealing material of the corner glass, and a lower end Mechanism with a tolerance that allows the sealing material to follow the deformation even with a large compressive load on the part,
It has seismic performance.

FIG. 2 is an explanatory view showing a state of displacement occurring in the corner glass (sheet glass) 3b when the sheet glass construction structure of FIG. 1 receives wind pressure. In FIG. 2, the displacement amount is shown larger than the actual amount for easy understanding. In this figure, since the wind pressure is almost uniformly applied to the entire glass surface, even if a high modulus sealing material is used near the center in the height direction, even if a high modulus sealing material is used, the partial pressure caused by the displacement due to the wind pressure between the corner glasses Excessive force that is greatly biased does not work. That is, only the central portion is made of a high modulus sealing material 8 having sufficient tensile strength and adhesive strength against a force such as wind pressure acting in the out-of-plane direction of the sheet glass.
The wind pressure received by the corner glass 3a
By transmitting to b, wind resistance performance is provided.

FIG. 3 is a perspective view of a main part of another embodiment of the sheet glass construction structure according to the present invention.
Can use a medium or low modulus sealing material that has sufficient tensile strength against forces such as wind pressure acting in the out-of-plane direction of the face glass and corner glass, and a silicone-based sealing material with a low modulus The other parts have the same configuration as that of FIG.

In particular, when the glass size is small, the glass mounting position is low, and the required design wind pressure is sufficient, the sealing material between the face glass and the corner glass is not applied with a large wind pressure, so that it follows the shear displacement sufficiently. The 50% modulus tensile stress is 0.5 kgf / cm ²
A medium or low-modulus sealing material having the above and less than 4 kgf / cm ² can be used.

[0023]

According to the present invention, in a corner portion of a large-size glass screen method composed of a plurality of large glass sheets, a portion other than the vicinity of the entire length or the center in the height direction of the sealing material at the corner side is reduced or reduced. By using a medium modulus seal material and a high modulus seal material near the center, it can follow the large deformation of the seal material above and below the corner side when subjected to interlayer displacement such as an earthquake, and excellent seismic resistance with a small seal width Can have performance. In addition, even when a large wind pressure is applied to the sealing material, the present invention uses the high modulus sealing material near the center in the height direction of the corner side, so that the wind pressure resistance can be secured.

[Brief description of the drawings]

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

FIG. 2 is an explanatory view of a state of displacement occurring in a sheet glass at a corner portion when the sheet glass construction structure of FIG. 1 receives wind pressure.

FIG. 3 is a perspective view of a main part showing another embodiment of the sheet glass construction structure of the present invention.

FIG. 4 is a perspective view of a main part showing a construction structure of a conventional sheet glass.

FIG. 5 is an explanatory diagram of a state of a displacement generated in a sheet glass at a corner when the construction structure of the sheet glass of FIG. 4 is subjected to interlayer displacement due to an earthquake or the like.

[Explanation of symbols]

 1: Face glass 2: Rib glass 3a, 3b: Corner glass 4a: Upper fixed frame 4b: Lower fixed frame 6, 8: High modulus sealing material 5, 9: Low modulus or medium modulus sealing material 7: Body

Claims (3)

[Claims] 1. A construction structure for a sheet glass having a structure in which sheet glass is butted and both ends in a corner side height direction bonded with a sealing material are fitted into a fixed frame, wherein the butting is performed at a predetermined tensile stress. A construction structure for a sheet glass in a corner portion, wherein a sealing material of a portion has a deformation ratio near a center portion in a height direction of a corner side smaller than a portion other than the vicinity of the center portion. (2) When tested by a tensile adhesion test specified in JIS A5758, a 50% modulus tensile stress is 4 kgf / cm ² or more in the vicinity of the center of the sealing material. In the part, the tensile stress of the 50% modulus is 0.5 kgf / cm ² or more and 4 k
The construction structure for a sheet glass in a corner portion according to claim 1, wherein the construction is less than gf / cm ² . 3. A plate glass construction structure in which sheet glass is butted and both ends in the corner side height direction bonded with a sealing material are fitted into a fixed frame, wherein the sheet glass abutting portion of the corner portion is provided. Was tested by a tensile adhesion test specified in JIS A5758, a tensile stress of 50% modulus was 0.1%.
A sheet glass construction structure at a corner portion, which is at least 5 kgf / cm ² and less than 4 kgf / cm ² .