JP2002161596A - Facing for earthquake-resistant wall in wall structure of building and manufacturing method for the facing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facing for an earthquake resistant wall structure for a wall structure of a building and a manufacturing method for the facing capable of improving earthquake resistant capacity, handling property, and workability and further, being easily manufactured, further, enhancing mass production. SOLUTION: The facing for an earth quake resistant wall is composed of a rectangular frame body 2 rectangularly framed by channels, a ligneous facing 3 attached along the rectangular frame body 2, and a fastener member 4 connecting the ligneous facing 3 to the rectangular frame body 2. The ligneous facing 3 has a sandwich structure formed of a pair of two ligneous boards, plywood 31, 32 for instance, and a thin steel plate 33 interposed between respective plywood 31, 32 and stuck therebetween and weatherproof adhesive sheets 34 are interposed respectively between mutual adhesive faces of respective plywood 31, 32 and the thin steel sheet 33 and heated and pressurized to stick together integrally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface material for an earthquake-resistant wall in a building wall structure such as a house structure such as a steel house, and more particularly to a frame wall method (2.times.4 method). The present invention relates to a surface material for an earthquake-resistant wall of a building wall structure in which a load-bearing wall is formed by a rectangular frame made of a channel steel and a wood-based surface material such as plywood, and a method for manufacturing the surface material.

[0002]

2. Description of the Related Art In recent years, steel houses have attracted attention as residential structures. And when constructing such a steel house, in particular, the framing wall construction method is used,
The building wall structure is framed to withstand earthquakes and strong winds.

[0003] A wall structure for a building of a steel house uses a channel steel formed by cold roll forming a galvanized steel sheet having a thickness of 0.8 to 1.6 mm for each frame material of a rectangular frame body. Plywood, glulam, OSB, gypsum board, and the like are used as surface materials. In particular, in building wall structures,
Because the face material is a main resistance structural element that resists the horizontal force acting on the building due to an earthquake or strong wind, etc., the horizontal resistance performance of the face material affects the seismic performance, and in order to improve the structural reliability, The significance of applying steel to face materials is significant.

[0004] However, the surface material using wood-based material such as plywood has a very large variation due to the characteristics of the material.
In some cases, long-term seismic performance cannot be ensured, and there is a limit in strength. Therefore, it cannot be used particularly for buildings where a large horizontal force acts like a load-bearing wall on the first floor of a three-story house. Sometimes.

[0005] Therefore, conventionally, a bearing wall has been proposed in which a steel material is used in combination with a rectangular frame or face material constituting the bearing wall.

For example, as disclosed in Japanese Patent Application Laid-Open No. 9-279762 filed and published by the present applicant,
After placing the X-braces on the rectangular frame in advance, a method of attaching and installing a surface material (preceding example 1), a method of joining thin steel plates to the rectangular frame in advance and attaching and installing the surface material ( Prior example 2) or a structure of a load-bearing wall by a method in which a thin steel plate is preliminarily bonded and integrated on one side of a face material and then attached to a rectangular frame body (preceding example 3) or the like has been proposed. .

[0007]

However, in the structure of the load-bearing wall in the above-mentioned conventional building wall structure, in the case of the first prior art, when the X-braces are framed in a rectangular frame, many ends are formed at the ends of each X-braces. Not only is it necessary to use fasteners such as drill screws and nails, but also because the surface of the fasteners causes the fastener to interfere with the finishing cosmetic after the surface material is attached, Work becomes difficult and appearance is poor. Even in the case of the preceding example 2, the preceding example 1
The same construction problems occur.

Further, in the case of the preceding example 3, since the front and back surfaces of the surface materials differ, it is necessary to carry out the construction work with consideration of the front and back surfaces of the surface materials. The generation of warpage based on the difference between the front and back of the material becomes a problem. In addition, it is necessary to use an expensive adhesive sprayer or adhesive applicator in order to apply the adhesive when bonding the thin steel sheet and the face material. The work is complicated, and there is a problem in storage and disposal of excess adhesive, which is poor in feasibility.

The present invention has been made in view of the above circumstances, and has improved seismic performance, handleability, construction workability, and appearance, and is easy to manufacture and can increase mass productivity. An object of the present invention is to provide a surface material for an earthquake-resistant wall in a structure and a method for manufacturing the surface material.

[0010]

Means for Solving the Problems In order to solve such problems, the present invention is configured as follows.

According to a first aspect of the present invention, there is provided a building wall structure comprising a rectangular frame formed by framing a channel steel into a rectangular shape, and a wood-based face material attached to the rectangular frame. The face material is characterized by having a sandwich structure of a pair of two wood-based board members and a thin steel plate interposed between the respective wood-based board members and integrally bonded.

According to a second aspect of the present invention, in the first aspect, the wood-based board is a plywood, a single wood board, a laminated wood or an O board.
It is any one of SB and the like.

[0013] A third invention is characterized in that, in the first or second invention, an adhesive sheet is used between the respective adhesive surfaces of the respective wood-based plate members and the thin steel plate.

A fourth aspect of the present invention is a method for manufacturing a surface material for an earthquake-resistant wall in a building wall structure, in which a thin steel plate is interposed between a pair of two wood-based plate materials, and each of the plywood and the thin steel plate is connected to each other. Characterized in that they are integrally formed by interposing an adhesive sheet between the respective adhesive surfaces and applying heat and pressure.

[0015]

According to the surface material for a seismic wall in the wall structure for a building of the present invention, a thin steel plate is interposed and bonded between a pair of wood-based plate materials, so that it is resistant to earthquakes and strong winds. Improves horizontal force resistance performance and seismic performance. In addition, the workability can be improved because it is possible to handle the work without having to be aware of the front and back of the face material.

Further, since the thin steel plate is interposed between the wood-based plates, the problem of warpage as in the past can be solved, and the screw holding ability can be improved. In addition, since the surface of the face material is a wooden board, fastener materials such as drill screws and nails can be hit as before. Moreover, since the fastener material head sinks into the surface of the wood-based plate material, there is no unevenness on the wood-based plate material surface due to the fastener material head as before, and it does not interfere with the finishing decorative material, Improve appearance.

Further, since the adhesive sheet is used between the respective bonding surfaces of the respective wood-based plate members and the thin steel plate, the bonding operation can be performed easily, and a weather-resistant bonding layer is formed between the respective bonding surfaces. Thus, a face material having complete weather resistance can be obtained.
Moreover, the excess adhesive sheet can be stored and reused in the same manner as ordinary paper at the time of bonding, so that it is possible to increase the economic efficiency and to store the excess adhesive as before. And problems related to disposal.

Since the adhesive sheet is used in manufacturing the above-described face material for the earthquake-resistant wall, when the wood-based board is plywood, laminated wood, or the like, a manufacturing process using a conventional heating press machine is used. It can be easily manufactured by the same process as above, and when cutting face materials after manufacturing, since the inner steel plate is thin, with a cutting device that shears wood-based plate materials such as plywood as before. Cutting can be easily performed, and mass productivity is improved.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show an embodiment of a wall structure for a building such as a steel house.

As shown in FIGS. 1 and 2, a load-bearing wall 1 as a building wall structure includes a rectangular frame 2 and a wood-based surface material (a surface material for an earthquake-resistant wall) attached to the rectangular frame 2. ) 3 and a fastener 4 such as a drill screw or a nail for joining the wood-based surface material 3 to the peripheral edge of the rectangular frame 2. The rectangular frame 2 is composed of a horizontal frame 21, a vertical frame 22, and an intermediate vertical frame 23.
Is framed in a rectangular shape. Further, each of the frame members 21, 22, 23 of the rectangular frame 2 has a thickness of, for example, 0.8 to 0.8.
It is formed from a channel steel obtained by cold roll forming a 1.6 mm galvanized steel sheet.

As described above, the load-bearing wall 1 in the building wall structure is composed of a wooden frame plywood having a rectangular frame 2 framed by frame members 21, 22, 23 made of channel steel having a height of 89 mm. This is a panel in which wood-based surface materials 3 made of are joined by fastener materials 4 such as drill screws. Therefore, when a seismic force A as shown by an arrow in FIG. 1 acts on the load-bearing wall 1 during an earthquake and a horizontal force B that causes deformation as shown by a dotted line in FIG. The properties of the face material 3 and the properties of the joint between the rectangular frame 2 and the face material 3 are the controlling factors of the wall strength. In other words, if the wood-based surface material 3 is made to have a high yield strength, the horizontal force resistance against the seismic force A borne by one wall is increased, whereby the wall amount can be reduced, and at the same time, the large span and the wide It will be possible to realize the concept of a future-type steel house called space.

Therefore, as shown in FIG. 3, the wood-based face material 3 according to the present invention comprises a pair of thin plywoods 31 and 32 having a thickness of 3 to 6 mm, and a pair of plywoods 31 and 32 interposed therebetween. It consists of a thin steel plate 33 having a thickness of 0.1 to 0.8 mm which is mounted and integrally bonded, and if necessary, a weather-resistant adhesive sheet 34.
With a sandwich structure. by this,
It is possible to obtain a sandwich face material having high yield strength and high rigidity.

That is, as shown in FIG. 4, in order to manufacture the above-mentioned wood-based face material 3, a wood-based material (hereinafter referred to as plywood) such as a pair of two plywoods, a single wood board, a laminated wood, and OSB is used. 3
1 and 32), and a weather-resistant adhesive sheet 34 is interposed between the bonding surfaces of the plywoods 31 and 32 and the thin steel plate 33. The thin steel plate 33 may be either a flat plate or a perforated plate. Then, as shown in FIG. 5, such a laminate 30 is subjected to a heating press machine 10 used in a normal manufacturing process of plywood for a structure.
And a temperature of around 150 ° C. and 40 kg / cm ²
It is formed integrally by heating and pressing under a moderate pressure. When the thin steel plate 33 is a flat plate, the strength is excellent, and when the thin plate 33 is a perforated plate, the weight is reduced and the bonding effect is improved as compared with the flat plate.

When the laminate 30 is formed by the hot press machine 10, the weather-resistant adhesive sheet 34 for bonding the plywoods 31, 32 and the thin steel plate 33 to each other is a continuous film formed by impregnating a paper with a phenol resin and drying. When pressed at a pressure of about 8 kg / cm ^{2 for} 10 minutes at a temperature of about 140 ° C., it cures and exhibits an adhesive effect. Then, after bonding, a weather-resistant adhesive layer is formed between the bonded surfaces, and a surface material having complete weather resistance is obtained.

FIG. 6 shows an in-plane shear tester for examining the mechanical performance of a face material. And such an in-plane shear tester 1
For example, an in-plane shear test of an interlayer deformation angle (Rp) with respect to a horizontal force (ton) acting on various test facings 200 was performed under the same conditions as those of the KC-type steel house wall evaluation method using No. 00, for example. FIG. 7A shows a conventional steel plate (with a thickness of 0.4 mm).
mm), the shear test result of the face material consisting only of FIG.
Is the current wood plywood (9mm thick), 4.0mm thick
FIG. 7 shows the results of a shear test of a face material obtained by stacking two pieces of wood plywood.
(C) shows the results of the shear test of the sandwich face material according to the present invention.

From the results of this shear test, the sandwich face material according to the present invention has a maximum interlayer deformation angle (Rp) at a horizontal force of 4,20 ton, as shown in FIG. The interlayer deformation angle (Rp) shown in FIG.
A value obtained by adding the maximum value of the steel plate having the maximum horizontal force of 2.35 ton and the maximum value of the wood plywood having the maximum interlayer deformation angle (Rp) shown in FIG. 7B with the horizontal force of 2.35 ton (3.49 ton).
It can be seen that the rise is about 20% larger than in n). This is due to the change in the fracture mode at the joint between the rectangular frame 2 and the wood-based face material 3 that constitute the load-bearing wall 1, and also due to the screw holding property of the face material. In addition, the wall magnification of the load-bearing wall of the current state of wood plywood applied on one side is about 5.5, but the load-bearing wall of the present invention has a wall magnification of 8.

[0027]

As described above, the surface material for the earthquake-resistant wall in the wall structure for a building according to the present invention has a sandwich structure in which a thin steel plate is interposed and bonded between a pair of wood-based plates. Horizontal force resistance performance against earthquakes, strong winds, and the like can be improved, and seismic performance can be improved. In addition, since it is possible to handle the construction without having to be aware of the front and back sides, construction workability can be improved.

Further, since the thin steel plate is interposed between the wood-based plates, the problem of warpage as in the prior art can be solved, and the screw holding ability can be improved. Moreover, since the surface of the face material is a wooden board, fasteners such as drill screws and nails can be hit as before, and the fastener head is reduced to the surface of the wood-based board. Because there is no unevenness on the surface of the wooden board due to the wood head and it does not interfere with the decorative material for finishing,
The appearance can be improved.

Furthermore, since the weather-resistant adhesive sheet is used between the respective bonding surfaces of the respective wood-based sheet materials and the thin steel plates, the bonding operation can be performed easily and the weather resistance between the respective bonding surfaces can be improved. An adhesive layer is formed, and a face material having complete weather resistance can be obtained. In addition, the excess adhesive sheet can be stored and reused in the same way as ordinary paper at the time of bonding.
As before, there is no problem associated with storage and disposal of excess adhesive.

Further, since the weather-resistant adhesive sheet is used in manufacturing such a face material for the earthquake-resistant wall, it can be easily performed by the same process as that for manufacturing a plywood or the like using a conventional heating press machine. Can be manufactured. In addition, when the face material is cut after production, since the inner steel plate is thin, it can be easily cut by a conventional cutting device for shearing a wood-based plate material, and mass productivity can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a load-bearing wall in a building wall structure according to the present invention.

FIG. 2 is an exploded perspective view of a load-bearing wall.

FIG. 3 is an enlarged sectional view of a surface material for an earthquake-resistant wall.

FIG. 4 is an exploded perspective view of a surface material for an earthquake-resistant wall.

FIG. 5 is an explanatory view showing a manufacturing process of a face material for an earthquake-resistant wall using a plywood heating press machine.

FIG. 6 is an explanatory view showing an in-plane shear test state of a load-bearing wall by an in-plane shear tester.

FIG. 7 shows the results of an in-plane shear test of a load-bearing wall, and FIG.
FIG. 7 is an explanatory view showing the results of an in-plane shear test of a conventional load-bearing wall made of a steel plate, and FIG. 7B is an explanatory view showing the results of an in-plane shear test of a current load-bearing wall made of a woody plywood surface. (C) is explanatory drawing which shows the in-plane shear test result of the load-bearing wall which consists of a sandwich face material of this invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bearing wall 2 Rectangular frame body 21 Horizontal frame material 22 Vertical frame material 23 Intermediate frame material 3 Wood-based face material 31 Plywood (wood-based board material) 32 Plywood (wood-based board material) 33 Thin steel sheet 34 Weatherproof adhesive sheet 4 Fastener material 10 Heating press 100 In-plane shear tester 200 Test surface material A Seismic force B Horizontal force

Claims (4)

[Claims] 1. A building wall structure comprising a rectangular frame formed by framing a channel steel in a rectangular shape, and a wood-based face material attached to the rectangular frame, wherein the wood-based face material comprises: A wall material for an earthquake-resistant wall in a building wall structure, characterized by having a sandwich structure of a pair of two wood-based plate members and a thin steel plate interposed between the respective wood-based plate members and bonded together. . 2. The surface material for an earthquake-resistant wall in a building wall structure according to claim 1, wherein the wooden board is any one of a plywood, a single wood board, a laminated wood, and an OSB. . 3. An earthquake-resistant wall in a building wall structure according to claim 1, wherein a weather-resistant adhesive sheet is used between bonding surfaces of each of the wood-based plate members and the thin steel plate. Face material. 4. A single steel sheet is interposed between a pair of two wood-based boards, and an adhesive sheet is interposed between the respective bonding surfaces of the plywood and the thin steel sheets, and is heated and pressed to form a single piece. A method for producing a surface material for an earthquake-resistant wall in a building wall structure, characterized by comprising: