JPH0967883A - Structure for arranging sheet glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a structure for arranging sheet glasses preventing them from breaking in an earthquake or the like. SOLUTION: A plurality of sheet glases 1, 1 are arranged to be flush with wach other and rib glasses 2, 2 are arranged at right angles against the butting part of the sheet glasses. And these are bonded with a middle modulus or a low modulus seal material 4 having a sufficient tensile strength against wind pressure or the like acting in the out-of-plane direction of the sheet glasses and also having a sufficient shearing deformation against displacements at an earthquake acting in the in-plane direction of the sheet glasses.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate glass construction structure which is not easily damaged by an earthquake or the like.

[0002]

2. Description of the Related Art In recent years, a large number of plate glass construction structures have been constructed in which an opening of a building or the like is formed by a large glass screen. As shown in FIG. 5, this construction structure is constructed by joining a plate glass constituting a wall surface having fixed upper and lower end portions, that is, a face glass 1 and a rib glass 2 orthogonal to the face glass 1 with a sealing material 5. As the seal material 5, a high modulus seal material having sufficient tensile strength, shear strength, and adhesive strength against a force such as a wind pressure acting in the out-of-plane direction of the plate glass 1 is used.

The lower ends of the face glass 1 and the rib glass 2 are fixed by a lower fixing frame 3b, and the upper ends thereof are also fixed by an upper fixing frame 3a (not shown).
Reference numeral 11 is a body.

FIG. 6 shows the displacement of the face glass 1 and the rib glass 2 when an interlayer displacement occurs in the body due to an earthquake or the like in the conventional example. As shown in FIG. 6, in such a conventional example, the upper and lower ends of the rib glass 2 are completely formed into the frame 1.
Since it is fixed to 1, the skeleton is subjected to interlayer displacement due to an earthquake, etc., the force in the D direction acts on the upper fixed frame 3a side of the skeleton, the force in the E direction acts on the lower fixed frame 3b side, and the skeleton moves to C −
When the rib glass 2 is tilted in the C direction and displaced by the displacement amount X, the upper and lower end portions of the rib glass 2 generate the same interlayer displacement amount X as that of the frame 11.

On the other hand, since the face glass 1 is subjected to the restraint of the sealing material 4 between the face glasses 1 adjacent to each other and the inertial force due to the weight of the plate glass itself, the face glass 1 has an inter-layer displacement amount X in comparison with the inter-face displacement of the face glass. The displacement amount Y generally tends to be small, that is, as the original phenomenon, the face glass (plate glass) 1 and the rib glass 2 try to move differently during an earthquake.

However, since the face glass and the rib glass are joined by a high-modulus sealing material, the face glass 1 and the rib glass 2 are the same except for the upper and lower ends, contrary to the above-mentioned action of trying different movements. Although it tries to move, since the upper and lower ends of the rib glass move in the same manner as the body as described above, the difference in displacement amount between the face glass (plate glass) and the rib glass becomes large near the upper and lower ends.

Therefore, the rib glass undergoes a substantially S-shaped displacement as shown in FIG. 6, and a large bending load is applied to the rib glass 2 at the portions F and G slightly from the upper and lower ends of the rib glass 2 to the center, and the rib glass 2 is damaged. Often.

The reason why some glass plates are damaged by a large earthquake is considered to be due to the reasons explained above.

In order to solve these problems, Japanese Patent Laid-Open No. 56-3784 proposes a method of using a glass construction body having earthquake resistance shown in FIG. FIG. 7 shows a case of a hanging construction method in which face glass (plate glass) is hung at the upper part, but a lower frame 18 for fixing the rib glass 2 and a fixed frame 3 fixed to the frame 11 are formed into a double frame structure. As a result, the rib glass 2 and the skeleton 11 are separated from each other so that they can slide.

Therefore, it has been confirmed that the rib glass 2 behaves in the same manner as the face glass (plate glass) 1 at the time of an earthquake, and the rib glass 2 is not subjected to a large bending displacement or bending stress and has excellent seismic performance. .

However, this method is currently not widely used because of its high cost. Therefore, it has been desired to develop a large-scale glass screen construction method that has earthquake resistance and is low in cost.

[0012]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a glazing construction structure having earthquake resistance and low cost.

[0013]

DISCLOSURE OF THE INVENTION According to the present invention, a plurality of glass sheets are arranged so that they are flush with each other, and a rib glass is arranged at the abutting portion of the adjacent glass sheets in a direction perpendicular to the glass sheets. In the construction structure of the plate glass in which the abutting part of the plate glass is adhered with a sealing material, and the lower ends of the plate glass and the rib glass are fitted into the lower fixing frame, the sealing material is a tensile member according to JIS A5758. Provided is a glazing construction structure having a tensile stress of 50% modulus of 0.5 kg / cm ² or more and less than 4 kg / cm ² when tested by an adhesion test.

According to the present invention, a plurality of sheet glasses are arranged so as to be flush with each other, rib glass is arranged at a butting portion of adjacent sheet glasses in a direction perpendicular to the sheet glasses, and a butting portion of the sheet glass and the rib glass is sealed. In the construction structure of the plate glass, which is bonded with a material, and the lower end of these plate glass and the rib glass is fitted into the lower fixing frame, the sealing material used near the central part in the height direction of the butted part is, JIS A575
5 when tested according to the Tensile Adhesion Test of 8.
The tensile stress of 0% modulus is 4 kg / cm ² or more, and the sealing material used for both side portions other than the central portion in the height direction of the butted portion has a tensile stress of 0.5 kg / cm of 50% modulus. ² or more and 4 kg / cm ²
Also provided is a plate glass construction structure characterized by being less than.

It is to be noted that such a construction structure of plate glass is
Prepare a set, and combine them so that the plate glass as the face glass arranged at the end of one set of the construction structure and another set of plate glasses are orthogonal to each other, and the orthogonal corners of both are used with a sealing material or the like. You may join.

The rib glass reinforces the plate glass as the face glass. Rib glass may be arranged in two directions at right angles to the face glass (plate glass) adjacent to each other, or the rib glass may be arranged only in one direction at a right angle to improve the design. In such a case, since a force such as wind is generally applied from the outside of the room, rib glass is arranged on the inside of the room to support the face glass against the force.

In the present invention, the lower end portions of the face glass (plate glass) and the rib glass are fitted into the lower fixed frame for use. For example, when supporting the load of the face glass on the lower side, the lower portions of the face glass and the rib glass are fitted into the lower fixed frame, and the plate glass is placed on the setting block installed in the lower fixed frame.

On the other hand, the upper portions of the face glass and the rib glass are fitted into the upper fixed frame, and the upper fixed frame is attached to the body via the attaching member. Alternatively, in the case of a hanging structure, the lower portions of the face glass and the rib glass are fitted into the lower fixing frame, and the upper portions of the face glass and the rib glass are hung on the frame by the hanging metal fittings.

The modulus of the sealing material is JIS A57.
58 when tested by the tensile adhesion test described in 58,
Tensile stress of 50% modulus (5% of original length
Tensile stress when the length reaches 150%, which is the length increased by 0%. ). High modulus is 4kg / cm ² or more, Medium modulus is 2kg / cm ²
Above and below 4 kg / cm ² , low modulus is 2 kg
/ Cm ² less than. Here the sample is
The type 2 (H-type) durability test body described in the section of the JIS test piece preparation is prepared by using a plate glass as an adherend.

As the material of the high modulus and medium modulus sealant used in the present invention, deacetic acid type, deoxime type, dealcohol type silicone type sealant is used.
As the material of the low modulus seal material, deamidation type,
A silicone-based sealant such as deaminoxy type can be used.

The above-mentioned sealing material having a tensile stress of 50% modulus of 0.5 kg / cm ² or more and less than 4 kg / cm ² is against the force such as wind pressure acting in the out-of-plane direction of the face glass (sheet glass). It is more preferable to use a sealing material that has sufficient tensile strength and that undergoes sufficient shear displacement against displacement during an earthquake that acts in the in-plane direction of the face glass (plate glass).

"Tensile strength of sealing material" relating to "sufficient tensile strength against wind force or other force acting in the out-of-plane direction of face glass" is defined between two glass plates or aluminum. It is evaluated by a tensile test of type 2 (H type) filled with a sealing material.

As the failure mode of the seal material at that time, cohesive failure in which the seal material is broken and interfacial separation in which the adhesive surface of the seal material is separated are considered, but the latter seal material showing the failure mode is not suitable. is there. Also, considering the safety factor, the "tensile strength of the sealing material" includes the adhesive strength,
2.5 kg / cm ² or more is more preferable. Also, in order to "perform sufficient shear displacement for displacement during an earthquake that acts in the in-plane direction of face glass (plate glass)," as an empirical value,
1.0 to 2.5 kg / c at 50% modulus tensile strength
m ² is more preferable.

The above-mentioned sealing material having a tensile stress of 50% modulus of 4 kg / cm ² or more is a sealing material having sufficient tensile strength against a force such as wind pressure acting in the out-of-plane direction of the face glass (plate glass). It is more preferable that the content is the same as described above, and the "tensile strength of the sealing material" including the adhesive strength is more preferably 2.5 kg / cm ² or more.

The destruction of the face glass used in the construction structure of the plate glass during the earthquake is caused by the displacement of the rib glass as the rib glass due to the movement of the face glass in the in-plane direction, and the face glass fitted in the fixed frame having the corners. Are usually caused by bumps at the corners, and face glass is rarely caused by an out-of-plane earthquake. Therefore, it is important to design the strength against the "earthquake acting in the in-plane direction of the face glass (plate glass)".

In a construction structure in which the abutting portions of the face glasses adjacent to each other with the upper and lower ends fixed are sealed with a sealing material, and the abutting portions are reinforced by rib glass orthogonal to the face glass, conventionally, the abutting of the face glasses is performed. The sealing material of the part always uses a high modulus over the entire length, and there is a problem in the seismic performance. However, in the present invention, only a part other than the vicinity of the central part of the entire length or height of the seal has a medium modulus or a low modulus. Seismic performance has been improved by using this material.

That is, the medium or low modulus sealing material of the present invention has a function of absorbing a difference in movement between the face glass and the rib glass when the interlayer displacement occurs in the structure.

Alternatively, the central portion in the height direction is used as a high modulus sealing material, and the wind pressure resistance performance is satisfied at that portion, and the upper and lower portions thereof are made of a medium or low modulus sealing material. By doing so, it has a mechanism that makes the movement of the face glass and the rib glass largely different during an earthquake and absorbs the difference in movement during an earthquake.

[0029]

EXAMPLE FIG. 1 shows a plate glass construction structure 1 according to the present invention.
FIG. 3 is a perspective view of a main part of the embodiment, in which a face glass 1 having fixed upper and lower ends and a rib glass 2 orthogonal to the face glass 1 are joined by a sealing material 4. As the sealing material 4, a medium or low modulus sealing material having a sufficient tensile strength against a force such as wind pressure acting in the out-of-plane direction of the face glass can be used, and a deamidation type silicone sealing material having a low modulus can be used. Uses a seal.

The lower ends of the face glass 1 and the rib glass 2 are fitted into the lower fixed frame 3b, and the face glass is placed on a setting block (not shown) installed in the lower fixed frame. The lower fixed frame 3b is
It is embedded in the floor surface forming the body 11. The upper ends of the face glass (plate glass) 1 and the rib glass 2 are
It is fitted in the upper fixed frame 3a (not shown).

FIG. 2 is an explanatory view of a displacement state occurring in the face glass (plate glass) and the rib glass when the plate glass construction structure of FIG. 1 undergoes interlayer displacement due to an earthquake or the like.

As shown in FIG. 2, since the upper and lower ends of the rib glass 2 are completely fixed to the skeleton 11, the skeleton is subjected to interlayer displacement due to an earthquake or the like, and the skeleton upper fixing frame 3a.
When the force in the D direction acts on the side and the force in the E direction acts on the lower fixing frame 3b side of the skeleton, and the skeleton inclines in the CC direction and is displaced by the interlayer displacement X, the upper and lower ends of the rib glass 2 are the same as the skeleton 11. An inter-layer displacement amount X is generated.

On the other hand, since the face glass 1 is restrained by the sealing material 4 between the face glasses 1 adjacent to each other and the inertial force due to the weight of the plate glass itself, the face glass 1 is less than the inter face displacement amount X of the body glass. The interlayer displacement amount Y generally tends to decrease, that is, as the original phenomenon, the face glass 1 and the rib glass 2 try to move differently during an earthquake.

Up to this point, the operations of the conventional example and the present invention are the same, but in the conventional example, since both are joined by a high modulus sealing material, the face glass 1 and the rib glass 2 are formed at portions other than the upper and lower ends. While trying to make the same movement, the upper and lower end portions of the rib glass make the same movement as the body, so that the difference in displacement between the face glass (plate glass) and the rib glass becomes large at the upper and lower end portions. Therefore, as described above, the rib glass undergoes a substantially S-shaped displacement, and a large bending load is applied to the rib glass 2 in a portion slightly from the center of the upper and lower end portions of the rib glass 2 and the glass is often broken.

On the other hand, the displacement of the face glass 1 and the rib glass 2 when an interlayer displacement occurs in the frame due to an earthquake or the like in the present invention, as shown in FIG. Of the flat glass during an earthquake by using the medium-modulus or low-modulus seal material 4 which has a sufficient tensile strength against the force of the face glass and a shear displacement sufficient for the displacement during the earthquake that acts in the in-plane direction of the face glass. The rib glass 2 and the rib glass 2 move independently of each other, and the rib glass 2 does not generate a large bending displacement or bending stress, so that it has seismic resistance.

In particular, when the glass size is small and the glass mounting position is low, since a large wind pressure is not applied to the seal, a medium or low modulus seal that sufficiently follows the shear displacement is used. Is valid.

FIG. 3 is a perspective view of an essential part of another embodiment of the plate glass construction structure of the present invention, in which a high modulus sealant (deacetic acid type silicone sealant is used near the center in the height direction). High modulus) 5 is used, and other parts are low modulus sealant (deamidation type silicone-based sealant having low modulus) 4 and other parts are the same as those in FIG. 1 described above. Is.

As can be seen from FIG. 5, the face glass 1
Also, since the difference in the amount of interlayer displacement near the center of the rib glass 2 in the height direction is small, the sealing material between the face glass 1 and the rib glass 2 is subjected to a large shear displacement near the center of the height direction. Absent.

FIG. 4 is an explanatory diagram of a state of displacement that occurs in the face glass (sheet glass) when the sheet glass construction structure of FIG. 3 receives wind pressure. For the above reason, even if a high modulus seal is used in the vicinity of the center in the height direction, an excessive force due to the displacement does not work between the face glass and the rib glass. A high modulus sealing material 5 having sufficient tensile strength and adhesive strength against wind pressure acting on the face glass 1 is transmitted to the rib glass 2 at that portion to have wind pressure resistance. Let

On the other hand, the other part is made of a low or medium modulus seal material so that the rib glass 2 and the face glass 1 can be moved separately without being constrained to each other during an earthquake.
The rib glass 2 is provided with excellent seismic performance by preventing large bending displacement and bending stress from occurring.
Reference numeral 3a is an upper fixed frame, 3b is a lower fixed frame, and 11 is a frame.

[0041]

As described above, the construction structure in which the abutting portions of the face glasses adjacent to each other having the fixed upper and lower ends are sealed with the sealing material, and the abutting portions are reinforced by the rib glass in the direction perpendicular to the face glass. In the body
Conventionally, the sealing material at the butted portion of the face glass has a high modulus over the entire length.

However, in the present invention, the movement of the rib glass and the face glass during an earthquake is separated by making the entire length of the sealing material or a portion other than the vicinity of the central portion in the height direction a medium or low modulus sealing material. It was possible to have excellent seismic performance.

When a large wind pressure is not applied to the seal material, especially when the glass size is small and the glass mounting position is low, such a large wind pressure is not applied to the seal material, so that it is uniquely high as in the conventional example. It is not necessary to use a modulus sealing material, and by adopting the present invention, it is possible to sufficiently secure wind pressure resistance and to have excellent seismic resistance.

Further, in the case where a large wind pressure is applied to the seal, in the present invention, a high modulus seal is used in the vicinity of the central portion in the height direction, and a low or medium modulus seal is used in the other parts. As a result, it is possible to secure excellent quake resistance and wind pressure resistance.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of one embodiment of a structure for constructing a sheet glass of the present invention.

FIG. 2 is an explanatory diagram of a displacement state occurring in the plate glass and the rib glass when the construction structure of the plate glass in FIG. 1 undergoes interlayer displacement due to an earthquake or the like.

FIG. 3 is a perspective view of an essential part of another embodiment of the construction structure for flat glass of the present invention.

4 is an explanatory view of a state of displacement generated in the glass sheet when the construction structure of the glass sheet in FIG. 3 receives wind pressure.

FIG. 5 is a perspective view of a main part of a conventional plate glass construction structure.

6 is an explanatory view of a state of displacement occurring in the plate glass and the rib glass when the construction structure of the plate glass in FIG. 5 undergoes interlayer displacement due to an earthquake or the like.

FIG. 7 is a perspective view of a main part of another conventional plate glass construction structure.

[Explanation of symbols]

 1: Face glass (plate glass) 2: Rib glass 3: Fixed frame 3a: Upper fixed frame 3b: Lower fixed frame 4: Low-modulus or medium-modulus seal material 5: High-modulus seal material 6: Setting block 8: Compressible member 11: frame 17: backup material 18: lower frame material

Claims (2)

[Claims] 1. A plurality of glass sheets are arranged so as to be flush with each other, rib glass is arranged in a direction perpendicular to these glass sheets at the abutting portions of the adjacent glass sheets, and the abutting portion between the glass sheets and the rib glass is a sealing material. In a construction structure of a sheet glass which is adhered and in which lower ends of the sheet glass and the rib glass are fitted into a lower fixing frame, the sealing material is tested by a tensile adhesion test according to JIS A5758. In addition, a construction structure for a sheet glass, which has a tensile stress of 50% modulus of 0.5 kg / cm ² or more and less than 4 kg / cm ² . 2. A plurality of plate glasses are arranged so as to be flush with each other, rib glass is arranged at abutting portions of adjacent plate glasses in a direction perpendicular to the plate glasses, and a butting portion between the plate glasses and the rib glass is made of a sealing material. In a construction structure of a plate glass which is adhered and in which the lower ends of the plate glass and the rib glass are fitted in a lower fixing frame, a sealing material used near the central part in the height direction of the abutting part is JIS A5758. When tested by the tensile adhesion test described in (1) above, the tensile stress of 50% modulus is 4 kg / cm ² or more, and the sealing material used on both sides of the butted portion in the height direction other than near the central portion is ,
The 50% modulus tensile stress is 0.5 kg / cm ²
A construction structure for plate glass, which is not less than 4 kg / cm ² and is less than 4 kg / cm ² .