JP2005068847A - Glass sheet support structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass sheet support structure which enables a glass sheet to bear a compressive force generated by the weight of a building. <P>SOLUTION: According to the glass sheet support structure, support members 2, 3 supporting upper and lower edges 1a, 1b of the glass sheet 1 bearing a compressive force, are formed of steel products or the like, and the upper and lower edges of the glass sheet are supported by the support members. Each of the upper and lower edges of the glass sheet and the support member are brought into surface contact with each other and assume an intimate contact state so as to uniformly transfer the compressive force to the entire surface of the glass sheet. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention belongs to the technical field of a plate glass support structure, and more specifically, a support structure capable of bearing a compressive force (hereinafter sometimes simply referred to as a compressive force) on the plate glass due to the weight of the building. About.

  Recently, in order to improve the design of buildings, many buildings where plate glass is frequently used for outer wall materials and inner wall materials can be seen. These plate glass support structures have (1) clearance between the support material (mainly, sash frame material) and (2) buffer material, so that a large external force (mainly compression) is applied to the plate glass. Force) is supported so that it is not transmitted.

As the support structure (1), for example, the following techniques are known.
The support structure of Non-Patent Document 1 is a structure in which a plate glass is arranged with a sash frame member and a clearance, and a lower end portion thereof is supported by a setting block made of chloroprene rubber so that a compressive force is not transmitted from the sash frame member to the glass. It is said that.

As the support structure (2), for example, the following techniques are known.
(I) In the support structure of Patent Document 1, the outer periphery of the plate glass is fitted and supported by a sash frame material containing a viscous body in the groove, and the compressive force is not transmitted from the sash frame material to the plate glass, so that an earthquake, etc. When a horizontal displacement due to is generated, the plate glass moves relative to the sash frame in the in-plane direction and exhibits a damping action.

(Ii) The support structure of Patent Document 2 is such that the outer periphery of the plate glass is supported by a sash frame member via an elastic seal material, and the compression force is not transmitted from the sash frame member to the plate glass. The said plate glass is comprised with the tempered glass and the crime prevention property is improved. Moreover, the edge of the said plate glass is chamfered, it prevents that stress concentrates on this edge, and the failure | damage of a plate glass is prevented.
Asahi Glass Catalog Construction page on page 37, construction page on page 43 JP 2001-193357 A JP 2000-203895 A

The plate glass is said to have a compressive strength exceeding 1000 N / mm ² . Accordingly, if the compression force can be applied to the plate glass, the strength of the frame at the opening of the building increases, and the cross section of columns and beams that are not visually attractive can be reduced in design. However, as described above, the conventional plate glass support structures of (1) and (2) have a structure in which the compression force is not transmitted to the plate glass, and there is no technical idea that bears the compression force on the glass.

  An object of the present invention is to provide a plate glass support structure that can effectively exert the compressive strength inherent in the plate glass and bear the compression force due to the weight of the building on the plate glass (used as a kind of structural material). It is to be.

As a means for solving the problems of the prior art, a support structure for a plate glass according to the invention described in claim 1 is:
The support material that supports the upper and lower edges of the plate glass that bears the compressive force is made of steel or the like, and the upper and lower edges of the plate glass are each supported by the support material,
The upper and lower edges of the glass sheet and the support material are characterized by having a structure in which they are in close contact with each other so that the compressive force can be transmitted to a substantially uniform distribution over the entire surface.

The invention according to claim 2 is the plate glass support structure according to claim 1,
Between the upper edge and lower edge of the plate glass and the support material, there is provided a cushioning material that does not change the distribution of compressive stress even if the compressive force is transmitted.

The invention according to claim 3 is the plate glass support structure according to claim 1,
The support material is characterized by being composed of a hardened steel material, a high strength steel material, a high strength mortar, or the like having a compressive strength equal to or higher than that of ordinary steel material or the same ordinary steel material.

  The plate glass support structure according to the present invention is a structure in which the plate glass bears a compressive force due to the weight of the building, so that the strength of the frame at the opening of the building is increased, and the design of the architectural design, columns and beams of poor appearance The cross section can be reduced. Also, reinforced concrete shear walls and braces can be omitted, increasing the degree of freedom in structural design. Above all, reinforcement around the plate glass can be reduced.

  First, an embodiment of a plate glass support structure according to the inventions described in claims 1 and 3 will be described with reference to FIGS. 1 and 2.

  In the support structure of the present invention, the upper and lower support members 2 and 3 that support the upper edge 1a and the lower edge 1b of the plate glass 1 that bear the compressive force due to the weight of the building are made of steel or the like. The plate glass 1 is composed of an existing float glass or the like, and the upper edge 1a and the lower edge 1b are cut with a diamond cutter or the like, and are polished to the same level as that used in the production of ordinary plate glass. Has been. The support members 2 and 3 have a U-shaped cross section similar to a conventional sash frame member, and the horizontal portions 2a and 3a of the support members 2 and 3 have a compressive force when the compressive force is transmitted. It is made of ordinary steel material (SS400) having a sufficient thickness so as to act evenly on the plate glass 1 (the invention according to claim 3). The vertical portions 2b and 3b that rise vertically from both ends of the horizontal portions 2a and 3a and support the glass glass 1 with the upper or lower portion sandwiched between the horizontal portions 2a, Like 3a, it is made of ordinary steel.

The upper edge 1a and the lower edge 1b of the glass sheet 1 are fitted into and supported by the upper and lower supporting members 2 and 3. As a result, the entire upper edge 1a of the plate glass 1 is directly brought into surface contact with the lower surface of the horizontal portion 2a of the support member 2 in a close contact state. The entire lower edge 1b of the plate glass 1 is also in direct contact with the upper surface of the horizontal portion 3a of the support member 3 in close contact, and the compressive force is uniformly distributed over the plate glass 1 from the support members 2 and 3 (evenly). It is structured to be distributed).
Usually, the compressive strength of the plate glass 1 is higher than that of the upper and lower support members 2 and 3, and when the upper and lower support members 2 and 3 yield and plastic deformation starts to occur, it becomes impossible to evenly distribute the compressive force to the plate glass. The plate glass 1 is damaged due to concentrated stress. That is, as the compressive strength of the upper and lower support members 2 and 3 is higher, the support members 2 and 3 are not plastically deformed by the compressive force, and the horizontal portion 2a of the support member 2 and the upper edge 1a of the plate glass 1 and the support member 3 The horizontal portion 3a and the lower edge 1b of the plate glass 1 maintain a surface contact state, and the compressive force is evenly distributed and transmitted to the plate glass 1. Therefore, the plate glass 1 is not damaged due to stress concentration, and the plate glass 1 The compressive force can be borne by exerting the compressive strength inherent to the.

Next, a test was conducted to confirm the effectiveness of the support structure of the plate glass according to the present invention. The result is demonstrated based on FIGS.
In the test, a flat test piece regarded as a support material was placed on the upper and lower sides of the plate glass, and a compression test was performed.

  Specifically, ordinary steel, gypsum, bamboo, aluminum, high-strength mortar, low-yield point steel, lead, hard rubber, and woody material LVL are selected as test pieces used in the test. The strength was measured. The results are shown in FIG. 3 and FIG.

  Next, the test pieces were placed on the upper and lower sides of the plate glass and brought into surface contact with each other in close contact, and the results of the compression test are shown in FIGS. As apparent from FIGS. 5 and 6, the compressive strength of the test piece and the compressive strength of the plate glass are approximately proportional, and when a material having a high compressive strength is used for the test piece, the plate glass can exhibit a high compressive strength. . This is presumably because the high compressive strength material is not plastically deformed, so that stress concentration does not occur in the plate glass, and the compressive force is evenly distributed and transmitted to the plate glass. Therefore, a support structure in which a material having a high compressive strength that does not undergo plastic deformation with respect to a compressive force as in the present invention is used as a support material for the plate glass, and the rigid support material and the plate glass are brought into close contact with each other, has a compressive force. Is evenly distributed from the support material and transmitted to the plate glass, and the plate glass does not break due to stress concentration, so that the high compression strength inherent in the plate glass can be exhibited and the compression force due to the weight of the building can be borne. It was confirmed that the support structure was highly effective.

  By the way, it can be inferred from the above test results that the conventional structure in which the glass sheet is supported by the setting block is a point support structure, so that stress concentration occurs and the glass sheet is damaged. Further, in the structure in which the plate glass is supported via a buffer material such as an elastic sealing material, it can be estimated that the buffer material is plastically deformed and stress concentration occurs to break the plate glass. Therefore, it is clear that the conventional support structure cannot impose a compressive force on the plate glass.

  As described above, the support structure of the plate glass according to the present invention is a structure that allows the plate glass to suitably bear the compressive force due to the weight of the building, so that the strength of the frame at the opening of the building is increased, and the design of the building design In addition, the cross-section of columns and beams with poor appearance can be reduced. Also, reinforced concrete shear walls and braces can be omitted, increasing the degree of freedom in structural design. Above all, reinforcement around the plate glass can be reduced.

  In the above embodiment, as shown in FIGS. 1 and 2, the upper surface of the plate glass 1 and the horizontal portion 2 a of the upper support member 2 are brought into direct surface contact, and the lower surface of the plate glass 1 and the lower support member 3 are brought into contact with each other. However, the structure is not limited to this structure. As shown in FIG. 7, even in a structure in which surface contact is made through an extremely thin cushioning material 4 that does not change the distribution of compressive stress even when a compressive force is transmitted, the invention can be similarly implemented. ). The buffer material referred to here is plastic, lead, vinyl or the like.

  Further, as the support materials 2 and 3, a hardened steel material, a high-strength steel material, a high-strength mortar, or the like having a compressive strength equal to or higher than that of a normal steel material can be used (the invention according to claim 3). By the way, when the buffer material 4 is interposed, the hardened steel material or the like has higher rigidity than that of the normal steel material, so that a thick buffer material can be used.

It is the side view which showed embodiment of the support structure of the plate glass which concerns on this invention. It is a front view of FIG. It is the figure which showed the compressive strength of the plate glass when installing each test piece on the upper and lower sides of a plate glass, and performing the compression test. It is the figure which showed the elastic modulus and compressive strength of each test piece. It is the figure which showed the relationship between the elastic modulus of each test piece, and the compressive strength of plate glass. It is the figure which showed the relationship between the compressive strength of each test piece, and the compressive strength of plate glass. It is the side view which showed different embodiment of the support structure of the plate glass which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plate glass 1a Upper edge of plate glass 1b Lower edge of plate glass 2 Upper support material 3 Lower support material 4 Buffer material made of high strength material

Claims (3)

The support material that supports the upper and lower edges of the plate glass that bears the compressive force is made of steel or the like, and the upper and lower edges of the plate glass are each supported by the support material,
The plate glass is characterized in that the upper and lower edges of the plate glass and the support material have a structure in which they are brought into close contact with each other so that the compressive force can be transmitted in a substantially uniform distribution over the entire surface. Support structure.   The cushioning material of the grade which does not change the distribution of compressive stress even if compressive force is transmitted is installed between the upper edge and lower edge of the plate glass, and the support material. Plate glass support structure.   The support material is composed of a hardened steel material, a high-strength steel material, a high-strength mortar, or the like having a compressive strength equal to or higher than that of ordinary steel material or the ordinary steel material. Sheet glass support structure.

Images