JP2013238068A - Bearing wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing wall structure which increases rigidity with proper workability without deteriorating characteristics of an inorganic bearing face material 8.SOLUTION: In a bearing wall structure, the inorganic bearing face material 8 is fixed to a column 1 and a joint stud 2 in a shaft material by a nail 20 passing through each front-side vertical reinforcing belt 10 and the inorganic bearing face material 8, via the front-side vertical reinforcing belts 10 and 10 positioned at front-side right and left ends of the inorganic bearing face material 8 and elongated in a vertical direction in an intermediate part except upper and lower ends of the inorganic bearing face material 8. The front-side vertical reinforcing belt 10 is made of a steel plate with a thickness of 0.2-0.6 mm, or a wood fiberboard having nail-side surface resistance yield stress greater than that of the inorganic bearing face material 8 and having a thickness of 2 mm or more and a specific gravity of 0.6 or more.

Description

  The present invention relates to a load-bearing wall structure in which an inorganic load-bearing face material is fixed to a shaft member.

  As the load-bearing wall structure of a general wooden house, in addition to bracing, wooden boards such as plywood and MDF, inorganic boards such as gypsum board and volcanic glassy multilayer board are used, and each has a certain strength. In addition, fire resistance, moisture permeability, and workability can be obtained, and various improvements have been studied for improving rigidity.

  For example, Patent Document 1 discloses a plate-like member having excellent earthquake resistance in which MDF is integrally laminated on the front and back surfaces of a structural plywood.

  Patent Document 2 discloses a method of joining a frame material with a nail or the like at the position of the steel material using a multi-layered surface material of a wood material and a steel material system.

  On the other hand, Patent Document 3 discloses a structure in which the wall magnification is improved by using screws for the structural plywood and shortening the pitch.

JP 2000-291130 A JP 2003-278308 A JP 2008-308820 A

  However, as in Patent Document 1 and Patent Document 2, rigidity can be improved by using a composite plate in which face materials are laminated, but fire resistance, moisture permeability, workability, which are the characteristics of each face material, are improved. It is unavoidable that the influence is exerted. In addition, if an inorganic multilayer board such as a volcanic glassy multilayer board is applied in the same manner, the characteristics of each layer constituting the inorganic multilayer board are different. It may not always be demonstrated.

  Furthermore, in the case of Patent Document 3, there is no change in the characteristics of the face material, but there is a problem that the workability and the economical efficiency are lowered because the number of screws must be prepared separately and the number of the screws increases. .

  The present invention has been made in view of such a point, and an object of the present invention is to propose a load-bearing wall structure with improved workability and improved rigidity without deteriorating the properties of the inorganic load-bearing face material. .

  In order to achieve the above object, in the present invention, at least one of the left and right end portions of the front surface side or the back surface side of the inorganic load bearing face material, a reinforcing band having a predetermined structure is disposed in an intermediate portion excluding the upper and lower end portions thereof. The inorganic load-bearing face material is fixed to the shaft member by a fixing tool such as a nail through a reinforcing band.

  Specifically, according to the first aspect of the present invention, the inorganic load-bearing face material is positioned on the shaft member between the left and right end portions on the back side of the inorganic load-bearing face material and the shaft member, and the upper and lower ends of the inorganic load-bearing face material. A load bearing wall structure fixed by a fixture penetrating the inorganic load-bearing face material and the back-side vertical reinforcing band through a back-side vertical reinforcing band extending in the vertical direction in the middle portion except for the back-side vertical The reinforcing band is a steel plate having a thickness of 0.2 to 0.6 mm integrated with the inorganic load-bearing face material, or is integrated with the inorganic load-bearing face material, and has a higher nail side resistance yield stress degree than the inorganic load-bearing face material. It consists of a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more.

  In the first aspect of the invention, the nail side surface resistance of the inorganic load bearing face material is reinforced by the back side vertical reinforcing band, and even when shear force is applied to the load bearing face material from the side surface, Since the breakage and the penetration of the fixing tool into the face material surface are reduced, the proof stress as the wall structure is improved.

  In addition, since the back side vertical reinforcement band is integrated with the load bearing surface material, this reinforcement band is integrated with the load bearing surface material, making it difficult to shift from the load bearing surface material even if shear force is applied. Is strengthened, and it is difficult for material destruction to occur, and the proof stress is improved.

  In addition, since the load bearing face material is simply joined to the shaft member together with the reinforcing band, the load bearing wall structure can be realized with good workability.

  In addition, since the back side vertical reinforcing band is fixed at the middle part between the upper and lower ends at the left and right ends on the back side of the load-bearing face material, the shearing force is applied in the longitudinal direction where the resistance force is large. Even if the bearing wall is greatly deformed by receiving a load from the side, the reinforcing effect can be kept high and long.

  Furthermore, the vertical reinforcement band on the back side is provided only on the left and right ends on the back side of the face material, and the main part of the face material is not provided with a reinforcement band. Functions such as performance can be exhibited as they are.

  And when the back side longitudinal reinforcing band is a wood fiber board, it has a certain thickness and hardness and is homogeneous, so it can exhibit the nail side resistance without variation, even if the load bearing face receives shearing force The fixing tool becomes difficult to bend and becomes difficult to sink into the load bearing material, and the strength is improved from the beginning of the load. Moreover, because the strength of the nail side surface yield stress of the wood fiberboard is greater than that of the inorganic load bearing face, the inorganic load bearing face does not start to break until the reinforcing band is broken, so the desired strength improvement as a load bearing wall structure is achieved. Can be obtained.

  On the other hand, when the back side vertical reinforcing band is a steel plate, the steel plate having a thickness of 0.6 mm or less is easy to fasten the fixture and has good workability. Furthermore, it is not necessary to provide a fixing hole in advance, and the fixing tool can be fastened simply by driving in as it is.

  According to a second aspect of the present invention, in the bearing wall structure of the first aspect of the invention, the intermediate portion excluding the left and right end portions of the inorganic load bearing face material is disposed between the upper and lower ends of the inorganic load bearing face back side and the shaft member. The back side lateral reinforcement band extending in the direction is located, and the inorganic load bearing face material is fixed to the shaft member via the back side lateral reinforcement band by the fixture penetrating the inorganic load bearing face material and the back side lateral reinforcement band. Has been. The back side lateral reinforcing band is integrated with the inorganic load-bearing face material, or a steel plate having a thickness of 0.2 to 0.6 mm, or is integrated with the inorganic load-bearing face material, and the nail side resistance yield stress degree is inorganic. It is characterized by comprising a wood fiber board having a thickness of 2 mm or greater and a specific gravity of 0.6 or greater than the load bearing face material.

  In the second aspect of the invention, since the back side lateral reinforcing band is provided in the left and right middle portions of the upper and lower end portions in addition to the left and right end portions of the inorganic load bearing face material, the nail head penetration resistance is particularly improved. As a result, higher yield strength can be obtained.

  The invention according to claim 3 is the surface side in which the inorganic load bearing face material is located on the left and right end portions on the surface side of the inorganic load bearing face material and extends in the vertical direction except for the upper and lower ends of the inorganic load bearing face material. It is a load-bearing wall structure fixed by a fixture penetrating the surface-side longitudinal reinforcement band and the inorganic load-bearing face material through a longitudinal reinforcement band, and the surface-side longitudinal reinforcement band has a thickness of 0.2 to 0 It is characterized by comprising a 6 mm steel plate, or a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more, which is greater than the above-mentioned inorganic load-bearing face material.

  In the invention of claim 3, the resistance to penetration of the nail head of the inorganic load bearing face material is reinforced by the surface-side longitudinal reinforcing band, and even when shear force is applied to the load bearing face material from the side surface, the head of the fixture Since the penetration of the surface of the face material due to is reduced, the proof stress as a wall structure is improved.

  In addition, since the reinforcing band is positioned and fixed at the middle portion between the upper and lower ends at the left and right end portions on the surface side of the load bearing surface, the shear force is applied in the longitudinal direction where the resistance force is large. Even if it receives a load from the side and greatly deforms, the reinforcing effect can be kept high and long.

  The surface side vertical reinforcing band is provided only at the left and right ends of the face material, and the main part of the face material is not provided with a reinforcing band, so the functions such as humidity control performance and moisture permeability performance unique to the face material remain unchanged. It can be demonstrated.

  Moreover, since the inorganic load-bearing face material can be reinforced from the surface side by the surface side longitudinal reinforcing band, the construction becomes easier.

  And when the surface side longitudinal reinforcing band is a wood fiber board, it has a certain thickness and hardness and is homogeneous, so it can exhibit the nail side resistance without variation, even if the load bearing surface receives shearing force The fixing tool is difficult to bend and is difficult to fit into the reinforcing band of the wood fiber board, and the strength is improved from the initial stage of the load. Furthermore, the front-side vertical reinforcement band can also be used as a trunk edge for a base on which a finishing material such as an outer wall material is applied. In addition, because the surface side vertical reinforcing strip has a nail side resistance yield stress level greater than that of the above-mentioned inorganic load-bearing face material, the inorganic load-bearing face material does not start to break until the reinforcing band is broken. Strength improvement can be obtained.

  On the other hand, when the front-side vertical reinforcing band is a steel plate, the thickness of the steel plate is 0.6 mm or less, so there is no need to provide a fixing hole in the reinforcing band in advance, and the fixing tool is simply driven in as it is. It can be fastened with ease, and it becomes easy to fasten the fixture, and the workability is good.

  Furthermore, for example, when the inorganic load bearing face material is first fixed to the shaft member to form the load bearing wall, and then the reinforcing plate is fastened from the surface of the face material, the face material is fixed with a fixture. In addition to fixing the reinforcing plate with another fixture, the number of fixtures increases and the workability deteriorates.In addition, the number of defects in the inorganic load-bearing face material increases around the through hole of the fixture, making it fragile. Become. In other words, even if the maximum load resistance is improved by increasing the number of fixtures, the energy due to deformation cannot be absorbed firmly by the entire inorganic load-bearing face material, and the ultimate displacement is reduced, resulting in early destruction. It does not improve the load-bearing performance as a load-bearing wall.

  On the other hand, in the load bearing wall structure of the present invention, the surface side longitudinal reinforcement band is fixed together with the load bearing face material by the same fixture, so that the energy due to the deformation can be absorbed firmly by the entire inorganic load bearing face material, and its early failure is prevented. It can be suppressed and the proof stress performance can be improved.

  According to a fourth aspect of the present invention, in the load-bearing wall structure of the third aspect of the invention, the upper and lower ends of the inorganic load-bearing face material on the surface side side extending in the left-right direction are intermediate portions excluding the left and right ends of the inorganic load-bearing face material. A reinforcing band is located, and the inorganic load bearing surface material is fixed to the shaft member via the surface side lateral reinforcement band by a fixture penetrating the surface side lateral reinforcement band and the inorganic load bearing surface material, and the surface The lateral lateral reinforcing band is composed of a steel plate having a thickness of 0.2 to 0.6 mm, or a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more which is greater than the above-mentioned inorganic load bearing face. It is characterized by that.

  In the invention of claim 4, the surface side lateral reinforcing band is provided not only on the left and right end portions on the surface side of the load bearing face material but also on the left and right intermediate portions thereof, so that particularly the nail head penetration resistance is improved. In addition, higher yield strength can be obtained.

  In the invention of claim 5, the inorganic load-bearing face material is formed on the shaft member, and the intermediate portion is located between the left and right end portions on the back side of the inorganic load-bearing face material and the shaft member and excluding the upper and lower ends of the inorganic load-bearing face material. Via the back side vertical reinforcing band extending in the vertical direction, and the surface side vertical reinforcing band extending in the vertical direction located corresponding to the back side vertical reinforcing band at the left and right end portions on the surface side of the inorganic load bearing surface material, the surface It is a load-bearing wall structure fixed by a fixture that penetrates the side longitudinal reinforcing band, the inorganic load-bearing face material, and the back side vertical reinforcing band, and the surface side vertical reinforcing band has a thickness of 0.2 to 0.6 mm. While the steel sheet or the nail side surface resistance yield stress degree is larger than that of the inorganic load-bearing face material, it is made of a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more. Is it integrated with an integrated steel sheet with a thickness of 0.2 to 0.6 mm or an inorganic load bearing face? Wherein the nail side resistor Yield Stress is specific gravity 0.6 or more wood fiber board with a large thickness of 2mm or more than inorganic strength facings.

  In the invention of claim 5, the same effect as that of the inventions of claims 1 and 3 can be obtained. In particular, the nail side surface resistance and nail head penetration resistance of the inorganic load bearing face material will be strengthened, and even when shear force is applied to the load bearing face material from the side surface, Since the penetration of the face material surface by the head is reduced, the proof stress as the wall structure is improved. In addition, the back side vertical reinforcing band is integrated with the load bearing surface, so even if shear force is applied, it will not be displaced from the load bearing surface material, and the nail side surface resistance will be strengthened, making it difficult for material destruction to occur and improving the yield strength. To do.

  According to a sixth aspect of the present invention, in the load-bearing wall structure of the fifth aspect of the invention, the intermediate portion excluding the left and right end portions of the inorganic load bearing face material between the upper and lower ends and the shaft member on the back side of the inorganic load bearing face material. While the back side lateral reinforcement band extending in the direction is located, the front side lateral reinforcement band extending in the left-right direction corresponding to the back side lateral reinforcement band is located at the upper and lower ends of the surface side of the inorganic load-bearing face material. The inorganic load-bearing face material is fixed to the shaft member with the fixture penetrating the surface-side lateral reinforcement band, the inorganic load-bearing face material, and the back-side lateral reinforcement band through the back-side lateral reinforcement band and the front-side lateral reinforcement band. The surface side lateral reinforcing band is a steel plate having a thickness of 0.2 to 0.6 mm, or a nail side surface resistance yield stress level greater than that of the inorganic load-bearing face material and a specific gravity of 0.6 or more. On the other hand, the back side lateral reinforcing band is made of a wood fiber board and integrated with the inorganic load bearing face material. A steel plate having a thickness of 0.2 to 0.6 mm, or a wood fiber board integrated with an inorganic load-bearing face material and having a nail side surface resistance yield stress greater than that of the inorganic load-bearing face material and having a thickness of 2 mm or more and a specific gravity of 0.6 or more It is characterized by comprising.

  In the invention of claim 6, not only the right and left end portions of the inorganic load bearing face material front and back surfaces, but also the left and right intermediate portions of the upper and lower end portions thereof are provided with the front side lateral reinforcement band and the back side lateral reinforcement band, Nail head penetration resistance is improved and higher yield strength is obtained.

  The invention according to claim 7 is the load-bearing wall structure according to any one of claims 1 to 6, wherein the vertical reinforcing band is disposed so as to straddle the joint between the inorganic load-bearing face materials adjacent to the left and right. The left and right inorganic load bearing materials are fastened with two right and left rows of fixtures.

  In the invention of claim 7, since the reinforcing band is disposed across the joint portion between the adjacent left and right load-bearing face materials, the left and right load-bearing face materials can be prevented from shifting back and forth. Strength is improved.

  The invention of claim 8 is characterized in that, in the load bearing wall structure of any one of claims 1 to 7, the surface of the reinforcing band made of a steel plate on the inorganic load bearing face side is roughened. To do.

  In the invention of claim 8, since the surface of the reinforcing strip made of steel plate is roughened on the surface of the load bearing face material, it is difficult to cause a deviation from the load bearing face material, and the resistance to the nail side surface is enhanced. As a result, material breakage is less likely to occur and the yield strength is improved.

  A ninth aspect of the present invention is the bearing wall structure according to any one of the first to eighth aspects, wherein the reinforcing band is integrated with the inorganic load-bearing face material by bonding.

  In the invention of claim 9, since the reinforcing band is bonded and integrated with the load bearing face material, the yield strength is improved. In other words, the reinforcement band is difficult to be displaced from the load bearing surface material even if shear force is applied due to the adhesive integration with the load bearing surface material, so that the nail side surface resistance force is strengthened and the material breakage hardly occurs, and the yield strength is improved.

  As described above, according to the present invention, the steel plate having a thickness of 0.2 to 0.6 mm is provided in the middle portion excluding the upper and lower end portions at least one of the left and right end portions on the front side or the back side of the inorganic load bearing face material. Or a nail side surface resistance yield stress level greater than that of the inorganic load-bearing face material is provided with a reinforcing band extending in the vertical direction made of wood fiber board with a thickness of 2 mm or more and a specific gravity of 0.6 or more, and penetrates the reinforcement band and the load-bearing face material Even if a shearing force is applied to the bearing surface from the side, the bearing material is destroyed by the fixture or the surface of the bearing material by the head of the fixture. Intrusion into the wall is reduced, the proof stress as the wall structure is improved, and the proof load wall structure can be realized with good workability.

FIG. 1 is an enlarged cross-sectional view showing a main part of a load-bearing wall structure according to Embodiment 1 of the present invention. FIG. 2 is a front view of a wall portion having a bearing wall structure. FIG. 3 is a cross-sectional view for explaining a mechanism for improving the proof stress of the wall, FIG. 3 (a) shows a case where the front side reinforcing band is integrated, and FIG. 3 (b) shows a back side reinforcing. The case where the band is integrated is shown. FIG. 3C shows a case where there is no reinforcing band for comparison. FIG. 4 is a view corresponding to FIG. 2 showing a modified example in which the reinforcing band is disposed so as to straddle the joint portion between the left and right inorganic load bearing members. FIG. 5 is an enlarged front view illustrating a state in which the surface of the reinforcing band made of a steel plate on the side of the load-bearing face material is roughened. FIG. 6 is a view corresponding to FIG. FIG. 7 is a view corresponding to FIG. FIG. 8 is a view corresponding to FIG. FIG. 9 is a view corresponding to FIG. FIG. 10 is a view corresponding to FIG. FIG. 11 is a view corresponding to FIG. FIG. 12 is a view corresponding to FIG. FIG. 13 is a view showing a test body used for the nail-plane shear test, in which FIG. 13 (a) is a sectional view and FIG. 13 (b) is a front view. FIG. 14 is a diagram showing the results of a nail-surface shear test for each specimen. FIG. 15 is a diagram showing the results of an in-plane shear test for the bearing wall structure. FIG. 16 is a diagram showing the results of an in-plane shear test on the bearing wall structure.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or its application.

[Embodiment 1]
1 and 2 show a load-bearing wall structure according to Embodiment 1 of the present invention, where 1 is a column (tube column) made of, for example, 105 × 105 mm cedar lumber in a wooden house, and 2 is two columns 1, 1. It is a joint pillar made of, for example, 45 × 105 mm cedar lumber or the like standing up in the central part between, and between these pillars 1, 1 and the joint pillar 2, a pillar 3 made of, for example, 27 × 105 mm cedar lumber or the like ( (Shown in FIG. 2). Between the upper ends of the pillars 1, 1 and the joint pillars 2 and 3, the upper horizontal member 5 such as a beam or a trunk made of, for example, 180 × 105 mm bay pine lumber or the like, and between the lower ends, for example, 105 × A lower horizontal member 6 such as a base made of 105 mm cedar lumber or the like is erected. The column 1, the joint column 2, the column 3, the upper and lower horizontal members 5 and 6 constitute a shaft member, and a rectangular shaft group is formed by these.

  A plurality of (only two are shown in FIG. 2) inorganic load bearing members 8, 8,... Are fixed to the shaft assembly. The left and right edges of each inorganic load bearing face 8 are up to the center of the column 1 and the joint spacer 2, the upper edge is up to the upper and lower center of the upper horizontal member 5, and the lower edge is the upper and lower center of the lower horizontal member 6. The left and right ends of each inorganic load-bearing face material 8 are fixed to the column 1 and the joint spacer 2 and the left and right central portions are fixed to the spacer 3 by nails 20, 20,. ing. Further, the upper end portion of the inorganic load bearing member 8 is fixed to the upper horizontal member 5 and the lower end portion thereof is fixed to the lower horizontal member 6 by nails 20, 20,.

  On the surface side of each inorganic load bearing face 8, surface side longitudinal reinforcing bands 10, 10 are arranged at the left and right ends, respectively, so that the upper and lower center portions thereof coincide with the center portion in the height direction of the inorganic load bearing face 8. Are arranged at the same height. The left and right surface-side vertical reinforcing bands 10, 10 are the same as each other, and in each case, a plurality of (for example, three) same reinforcing plates 16, 16,... Are arranged in series in the vertical direction (vertical direction) without any gap. . Each reinforcing plate 16 is a thin plate having a width of 30 mm and a length of 500 mm, for example. That is, the left and right surface-side vertical reinforcement bands 10 and 10 formed of these reinforcing plates 16 extend in the vertical direction at the middle portion excluding the upper and lower ends at the left and right end portions on the surface side of the inorganic load bearing face 8. The one end portion in the width direction is arranged so as to coincide with the left and right end portions of the inorganic load-bearing face material 8. The inorganic load bearing face 8 penetrates the surface-side longitudinal reinforcement bands 10 and the inorganic load-bearing face material 8 through the surface-side longitudinal reinforcement bands 10 and 10 with respect to the column 1 and the joint inter-column 2 of the shaft member. Are fixed by nails 20, 20,.

(Inorganic bearing material)
Examples of the inorganic load-bearing face material 8 include a gypsum board, a calcite board, and a volcanic glassy multilayer board. This kind of inorganic load-bearing face material 8 is superior in fireproof performance and antiseptic ant performance, etc., compared to wood-based load bearing face materials such as structural plywood. The penetration resistance and nail side resistance are not necessarily excellent. However, this embodiment is particularly useful because, as will be described later, the reinforcing band 10 can increase the nail head penetration resistance and the nail side resistance of the inorganic load-bearing face material 8 to reduce the material breakage.

(Reinforcing band)
The surface-side longitudinal reinforcing band 10 is made of wood fiber board such as MDF or HDF having a nail side surface resistance yield stress level larger than that of the inorganic load-bearing face material 8 and a thickness of 2 mm or more and a specific gravity of 0.6 or more. It consists of a steel plate with a thickness of 0.2 to 0.6 mm.

  The reason why the reinforcing band 10 is not a wood board such as plywood or particle board but a wood fiber board is a board made of wood fiber, so it has high homogeneity and a certain effect can be expected at all the fastening points of the nail 20. Because. In other words, the plywood has disadvantages such as nodes and crucibles, and in the particle board, voids are scattered between the chip elements, which may affect the strength development in the nail 20, so it cannot be said that the variation is necessarily small. .

  If such a surface-side longitudinal reinforcing band 10 is a wood fiber board, a thickness of about 2 to 20 mm is required. If the thickness is less than 2 mm, the desired strength improvement cannot be obtained. On the other hand, if the thickness exceeds 20 mm, it is difficult to nail and the workability is deteriorated. Moreover, when specific gravity is less than 0.6, desired strength improvement cannot be obtained. Since such a wood fiber board is a homogeneous wood material having a certain thickness and hardness, even if the load bearing face 8 receives shearing force and is displaced from the initial position, the nail 20 is difficult to bend. As a result, it becomes difficult to sink into the load bearing face material 8, and the strength is improved from the initial stage of the load.

  Further, the nail side surface yield stress degree of the wood fiber board to be the reinforcing band 10 needs to be larger than that of the inorganic load bearing face material 8. The reason for this is that if the nail side surface yield stress is less than or equal to that of the inorganic load bearing face 8, the load bearing face 8 starts to break before the reinforcing band 10, and thus the desired strength improvement cannot be obtained. is there.

That is, since the nail side resistance yield stress of the inorganic strength surface material 8 is ^10N / mm ^{2 ~25N} / mm 2 approximately (N50 when used as a nail 20), it is necessary that greater than this. For example, if the nail side resistance yield stress degree of a 9 mm thick volcanic glassy multilayer board is about 13 N / mm ² , the nail side resistance yield stress degree is 3 mm thick and MDF with a specific gravity of 0.77. Is suitable because it is 31 N / mm ² . The wood fiber board is effective because the nail 20 is bent at the contact portion even if it is not integrated with the face material 8 because the thickness is 2 mm or more and the yield stress degree is large.

  In addition, since the inorganic load-bearing face material 8 has a nail head penetration resistance of about 400 to 1100 N (when N50 is used as the nail 20), it is desirable that the reinforcement band 10 has a greater nail head penetration resistance.

  Moreover, if it is a wood fiber board, it can be utilized also as a trunk edge for the foundation | substrate which constructs finishing materials, such as an outer wall material.

  On the other hand, if the surface-side longitudinal reinforcing band 10 is a steel plate, a thickness of 0.2 to 0.6 mm is required. If the thickness is less than 0.2 mm, the desired strength improvement cannot be obtained, while if it exceeds 0.6 mm, it is difficult to nail. That is, the surface-side longitudinal reinforcing band 10 made of a steel plate having a thickness of 0.6 mm or less is easy to fasten the nail 20 and has good workability.

  Moreover, since the steel sheet-side longitudinal reinforcing band 10 is thin, it hardly causes unevenness in the wall structure as a foundation, and has no effect when finishing materials such as outer wall materials, and is finished beautifully. Can do.

  In the surface-side longitudinal reinforcing band 10 made of a steel plate, the surface on the inorganic load-bearing face material 8 side (the back surface in this embodiment) is roughened by embossing uneven processing, punching processing, non-slip coating application, or the like. Good. As a result, deviation from the load bearing surface material 8 is less likely to occur, the nail side surface resistance force is strengthened and material destruction is less likely to occur, and the yield strength is further improved. When performing the punching process, for example, a number of holes with a diameter of about 3 mm are formed by punching the steel sheet from the front surface side, and burrs (projections) having a height of about 1.5 mm are formed around each hole on the back surface side, The burr may be a rough surface for preventing misalignment. For example, in the example shown in FIG. 5, a large number of holes 17, 17, 17 are formed at a pitch of 20 mm vertically and 10 mm horizontally from the surface using N50 nails or the like in a range 10 mm away from the peripheral edge of each reinforcing plate 16 of the reinforcing band 10. ... are opened in two rows, and burrs (not shown) are set up on the back side around each hole 17.

  In addition, it is preferable that the surface side longitudinal reinforcement band 10 and the inorganic load bearing material 8 are integrated by, for example, a tucker or an adhesive. Thereby, even if a shearing force is applied, it is difficult to be displaced from the load bearing surface material 8, so that the nail side surface resistance force is strengthened and the material breakage hardly occurs, and the yield strength is improved.

  In order to integrate the surface-side longitudinal reinforcing band 10 and the inorganic load-bearing face material 8 with an adhesive, any adhesive such as an epoxy adhesive can be used. As a construction method, for example, an epoxy adhesive or the like may be applied to a predetermined portion of the reinforcing band 10 or the face material 8 and solidified together with a nail, or the reinforcing band 10 may be temporarily bonded to the face material 8 in advance. Then, you may make this adhesion | attachment with a nail clamp.

  Although the width | variety of the surface side vertical reinforcement belt | band | zone 10 (reinforcement board 16) is arbitrary, about 20-120 mm is easy to construct, for example, and it is easy to acquire a desired effect (in this embodiment, it is 30 mm in width).

  The minimum length of the reinforcing band 10 is preferably 1/3 or more of the total length (total height) of the inorganic load-bearing face material 8. When the total length of the load bearing face 8 is 2730 mm, it is 910 mm. This is because if it is shorter than 1/3, the reinforcing effect is small and the desired yield strength cannot be obtained.

  The maximum length of the reinforcing band 10 is such that the reinforcing band 10 is not disposed on the entire inorganic load-bearing face material 8 but the upper and lower ends of the reinforcing band 10 do not reach the positions of the upper and lower horizontal members. It is set (in the example of this embodiment, the length is 1500 mm). In consideration of workability, handleability, economic efficiency, and the like, it may be about 2/3 of the total length where sufficient reinforcing effect is expected as necessary.

  Further, the reinforcing band 10 has a plurality of reinforcing plates 16, 16,... Arranged in series without gaps, but instead of arranging the adjacent reinforcing plates 16, 16 so as to be continuous without gaps. A certain gap may be provided. However, in the case of providing a certain gap, if there is a nail 20 (fixing tool) that fixes only the face material 8 at the gap, it is difficult to obtain a desired effect. Don't do it.

  In addition, the reinforcing band 10 may be a single one instead of arranging a plurality of reinforcing plates 16, 16,.

  The reinforcement band 10 is good in it being a thing with high decay resistance. This is for the purpose of preserving durability deterioration due to decaying fungi and termites. If it is a wood fiber board, what was subjected to antiseptic treatment is good, and if it is a steel sheet, a galbarium steel sheet having a relatively high antiseptic property can be used.

  The plurality of inorganic load bearing members 8, 8,... Are adjacent to each other at the positions of the columns 1 and the joint columns 2. In this case, the surface side longitudinal reinforcing band 10 may be integrated with the reinforcing band 10 on the adjacent inorganic load bearing face 8 side. That is, as shown in FIG. 4, the surface-side longitudinal reinforcing band 10 ′ is disposed between the adjacent inorganic load bearing face materials 8, 8 so as to straddle the joint between the inorganic load bearing face materials 8, 8. It is set as the structure fixed with the nail | claw 20,20, ... of two right and left so that this left and right inorganic load bearing surface materials 8 and 8 may be fastened. The surface side longitudinal reinforcing band 10 '(each reinforcing plate 16) is a wide band having a width approximately twice that of the reinforcing band 10 used in the structure shown in FIG. The portion is arranged so as to coincide with the joint portion between the two inorganic load-bearing face materials 8 and 8.

(Fixture)
As the fixture, the nail 20 is used as described above, but other general fixtures such as screws may be used. It should be noted that the fixtures other than the nail 20 are generally expressed as “nails side resistance yield stress degree” and “nail head penetration resistance” in the same manner as the nail 20.

  The fixing position of the nail 20 as the fixing tool is, for example, 12 mm from the end of the face material 8 (reinforcing band 10), and the interval between the nails 20, 20 is, for example, 100 mm.

(Construction method)
Next, an example of the construction method of the bearing wall structure of the said embodiment is demonstrated.
(1) A predetermined receiving material (not shown) is fastened to the lower horizontal member 6 such as a base.
(2) The lower end portion of each inorganic load-bearing face material 8 is placed on the receiving material, and leans against the column 1 or the joint inter-column 2.
(3) Temporarily fasten each load bearing member 8 to the column 1 and the joint column 2 in this state.
(4) The front-side vertical reinforcing band 10 (a plurality of reinforcing plates 16, 16,...) Is arranged at the upper and lower intermediate portions at the left and right ends of the load bearing surface 8, and if necessary, it is integrated with the load bearing surface 8. The surface-side longitudinal reinforcing band 10 is fixed to the column 1 and the joint column 2 by the nails 20, 20,. As shown in FIG. 4, when a wide surface-side longitudinal reinforcing band 10 ′ is disposed between adjacent inorganic load-bearing face materials 8, 8, the surface-side longitudinal reinforcing band 10 ′ is used as both load-bearing face materials 8. , 8 so as to straddle the joint between the joints 8 and 8, and the surface-side longitudinal reinforcing band 10 ′ is fixed to the joint column 2 by the nail 20 together with the load-bearing face material 8.

  Further, the portion of the load bearing member 8 where the surface-side vertical reinforcing band 10 is not disposed, that is, the upper and lower portions excluding the upper and lower middle portions at the left and right end portions of the load bearing member 8, the left and right center portion of the load bearing member 8, and the load bearing member. The upper and lower end portions 8 are fixed to the column 1, the inter-joint column 2, the upper and lower horizontal members 5 and 6 with the nails 20 without using the reinforcing band 10.

  The front-side vertical reinforcing band 10 may be temporarily fixed to the end portion of the load bearing surface material 8 in advance. Also, a plurality of types of reinforcing bands 10 may be prepared and used as appropriate according to the site situation.

  Moreover, if the mark which shows the fixing position of the nail 20 is previously given to the reinforcement belt | band | zone 10, workability will improve.

  Therefore, in this embodiment, the nail side resistance of the inorganic load bearing face 8 is reinforced by the surface-side longitudinal reinforcing band 10, and even when a shear force is applied to the load bearing face 8 from the side, the nail 20 is used. Since the destruction of the face material 8 and the penetration of the nail 20 into the surface of the face material 8 by the head (nail head) are reduced, the proof stress as the wall structure is improved.

  For example, the surface-side longitudinal reinforcing band 10 made of wood fiberboard has a certain thickness and hardness and is uniform, so that the nail side resistance can be exhibited without variation, and the load bearing face 8 is subjected to shear force. The nail 20 becomes difficult to bend and becomes difficult to dig into the load bearing surface 8, and the strength is improved from the beginning of the load.

  The mechanism of the load bearing structure will be described below. In the inorganic load bearing face 8, the periphery of the nail 20 where the penetration force of the head of the nail 20 is relatively closely related to the yield strength of the face 8 is as follows. In this description, the fixed portion on the column 1 side at the left and right end portions of the load bearing surface material 8 will be described, but the same applies to the fixed portion on the inter-joint column 2 side.

  If the reinforcing band 10 is not provided, as shown in FIG. 3C, the back surface of the load bearing surface 8 and the surface of the column 1 (joint column 2) are recessed by the nail 20 as the wall is deformed. As the head digs into the face material 8, the proof stress decreases (in FIG. 3, a portion indicated by a dot indicates a recessed portion).

  On the other hand, when the surface side vertical reinforcing band 10 is arranged on the load bearing surface 8, as shown in FIG. 3A, the penetration resistance of the head of the nail 20 is increased by the reinforcing band 10, The head of the nail 20 is less likely to sink into the face material 8, and the resistance to pulling out of the nail 20 with respect to the column 1 (joint column 2) is utilized to improve the yield strength. In particular, as described with reference to FIG. 4, when the reinforcing band 10 is fixed so as to straddle the joint between the adjacent inorganic load bearing members 8, 8, the reinforcing band 10 is displaced in the vertical direction of the joint. Therefore, further improvement in proof stress can be expected.

  Moreover, in this embodiment, since the load bearing surface material 8 is only joined to the column 1, the joint column 2 and the like together with the reinforcing band 10, the above load bearing wall structure can be realized with good workability.

  Further, unlike the above-described embodiment, for example, the inorganic load bearing face 8 is first fixed to the column 1 of the shaft member, the joint column 2 or the like to form a load bearing wall, and then the surface of the load bearing face 8 is used. From the above, a load-bearing wall structure for fastening a reinforcing plate (similar to the front-side vertical reinforcing band 10) is also conceivable. However, in that case, the load bearing face 8 is fixed with a nail (fixing tool), and then a reinforcing plate is fixed with a nail (fixing tool) different from the nail, which increases the number of nails. Of course, the workability is lowered, and the number of defective portions of the inorganic load-bearing face material 8 is increased around the through hole of the nail and becomes brittle. That is, even if the maximum load resistance is improved by increasing the number of nails, the energy due to the deformation cannot be absorbed firmly by the entire inorganic load-bearing face material 8, and the ultimate displacement is reduced, resulting in early destruction. It does not improve the load-bearing performance as a load-bearing wall.

  On the other hand, in the load bearing wall structure according to the above embodiment, the surface side longitudinal reinforcing band 10 is fixed together with the load bearing face material 8 by the same nail 20, so that the energy due to deformation can be absorbed firmly by the entire inorganic load bearing face material 8. The remarkable effect which can suppress the early destruction and can improve a proof stress performance is acquired.

[Embodiment 2]
FIG. 6 shows a second embodiment of the present invention (in the following embodiments, the same parts as those in FIGS. 1 to 5 are denoted by the same reference numerals and detailed description thereof is omitted), and the first embodiment is described above. The reinforcing band 10 is disposed at the left and right end portions on the surface side of the inorganic load-bearing face material 8, but is also disposed at the upper and lower end portions on the same surface side.

  In this embodiment, in the structure of the first embodiment (see FIG. 2 or 4), upper and lower surface side lateral reinforcing bands 11, 11 are respectively provided on the upper and lower ends of the surface side of each inorganic load-bearing face material 8, The left and right center portions correspond to the same left and right positions, and are arranged so as to coincide with the center portions in the left and right width direction of the inorganic load bearing face material 8. The upper and lower surface side lateral reinforcing bands 11, 11 are the same as each other, and are composed of, for example, only one reinforcing plate 16 constituting the surface side vertical reinforcing band 10, and are a thin plate having a width of 30 mm and a length of 500 mm. It is. That is, the upper and lower surface side lateral reinforcement bands 11, 11 made of the reinforcing plate 16 are arranged at the upper and lower ends on the surface side of the inorganic load-bearing face material 8, and the middle part excluding the left and right end parts of the face material 8 in the left-right lateral direction. It extends so that one end in the width direction thereof is arranged so as to coincide with the upper and lower ends of the inorganic load-bearing face material 8. And the inorganic load-bearing face material 8 is the surface side lateral reinforcement band 11 and the inorganic load-bearing face material with respect to the upper and lower horizontal members 5 and 6 of the shaft member via the surface-side lateral reinforcement bands 11 and 11. 8 is fixed by a nail 20 (fixing tool) penetrating through 8.

  The surface-side lateral reinforcing band 11 is a steel plate having a thickness of 0.2 to 0.6 mm, or a wood fiber board having a specific gravity of 0.6 or more and a thickness of 2 mm or more, which is greater than that of the inorganic load-bearing face material 8. Consists of. Other configurations are the same as those of the first embodiment.

  Therefore, also in this embodiment, the same effect as that of the first embodiment can be obtained. In addition, in this embodiment, not only the vertical reinforcement bands 10 and 10 are provided at the upper and lower middle portions of the left and right end portions of the load-bearing face material 8 but also the left and right middle portions of the upper and lower ends of the same load-bearing face material 8. Since the surface side lateral reinforcement bands 11 and 11 are also provided in the part, there is an advantage that the resistance to penetration of the nail head is particularly improved and higher proof stress is obtained.

[Embodiment 3]
7 and 8 show the third embodiment. In the first embodiment, on the surface side of each inorganic load-bearing face material 8, the surface-side longitudinal reinforcement bands 10 and 10 are arranged at the left and right ends, respectively, whereas in this embodiment, each inorganic load-bearing face material is provided. On the back surface side of FIG. 8, reinforcing bands are respectively arranged at the left and right end portions.

  That is, in this embodiment, each inorganic load bearing face 8 is positioned between the pillar 1 and the joint spacer 2 in the shaft, and between the pillar 1 and the joint pillar 2 at the left and right end portions on the back side of the inorganic load bearing face 8. In addition, a nail 20 penetrating through the inorganic load-bearing face material 8 and the back-side vertical reinforcement band 13 via the back-side vertical reinforcement bands 13 and 13 extending in the vertical direction in the middle portion excluding the upper and lower ends of the inorganic load-bearing face material 8. It is fixed by.

  The back side vertical reinforcing band 13 is composed of a plurality of (for example, three) reinforcing plates 16, 16,..., The same as the front side vertical reinforcing band 10 of the first embodiment, and has a thickness of 0.2 to 0.6 mm. Or a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more, which is larger than that of the inorganic load bearing face material 8.

  Further, it is essential that the back-side vertical reinforcing band 13 is integrated with the inorganic load-bearing face material 8 by, for example, a tucker, a burr, an adhesive, or the like. This integrated structure is the same as the structure in which it is desirable to integrate the surface-side longitudinal reinforcing band 10 with the inorganic load-bearing face material 8 in the first embodiment. That is, for example, in order to integrate the back side vertical reinforcing band 13 and the inorganic load-bearing face material 8 with an adhesive, an arbitrary adhesive such as an epoxy adhesive is used. As a construction method, for example, an epoxy adhesive or the like may be applied to a predetermined portion of the reinforcing band 13 or the face material 8 and solidified together with a nail, or the reinforcing band 13 may be temporarily bonded to the face material 8 in advance. Then, you may make this adhesion | attachment with a nail clamp. Thereby, even if a shearing force is applied, it is difficult to be displaced from the load bearing surface material 8, so that the nail side surface resistance force is strengthened and the material breakage hardly occurs, and the yield strength is improved.

  On the back surface of each inorganic load-bearing face material 8, the position where the back surface side vertical reinforcing band 13 is arranged is the same as the height position of the front surface side vertical reinforcing band 10 of the first embodiment (see FIG. 2), and the surface side thereof. The back side vertical reinforcing band 13 is disposed at a position corresponding to the back side of the vertical reinforcing band 10. Other configurations are the same as those of the first embodiment.

  Also in this embodiment, the same operational effects as in the first embodiment can be achieved. The mechanism of the load-bearing structure by the back side longitudinal reinforcing band 13 will be described. As shown in FIG. 3B, the interface portion between the column 1 (joint column 2) and the face material 8 that is most likely to be recessed as the wall is deformed. Therefore, the back-side vertical reinforcing band 13 which is a hard material is selectively disposed, and a large force is generated from the initial stage of deformation to improve the wall strength. Further, if the back-side longitudinal reinforcing band 13 is a wood fiber board having a thickness of 2 mm or more, the nail 20 is bent at that portion, and thereby the inclination of the nail head on the surface of the face material 8 is suppressed, and the nail head penetration resistance Thus increasing the wall strength.

[Embodiment 4]
FIG. 9 shows a fourth embodiment. In the third embodiment, the reinforcing band 13 is disposed only at the left and right end portions on the back surface side of the inorganic load-bearing surface material 8, whereas the upper and lower end portions on the same back surface side. Are also provided with reinforcing bands.

  In this embodiment, in the structure of the third embodiment (see FIG. 8), the upper and lower back side lateral reinforcing bands 14 and 14 are respectively located at the same left and right positions on the upper and lower ends of the back side of each inorganic load bearing face 8. And the left and right center portions thereof are arranged so as to coincide with the center portion of the inorganic load bearing face material 8 in the left and right width direction. In the back surface of each inorganic load-bearing face material 8, the position where the back surface side lateral reinforcing band 14 is disposed corresponds to the left and right positions of the front surface side lateral reinforcing band 11 of the second embodiment (see FIG. 6), and the surface side thereof. A back side lateral reinforcing band 14 is disposed at a position corresponding to the back of the lateral reinforcing band 11.

  The upper and lower back side lateral reinforcing bands 14 and 14 are the same as each other, and each includes, for example, only one reinforcing plate 16 constituting the front side vertical reinforcing band 10. That is, the upper and lower back side lateral reinforcing bands 14, 14 formed of the reinforcing plate 16 are arranged at the upper and lower ends of the back side of the inorganic load-bearing face material 8, and the middle part excluding the left and right ends of the face material 8 in the left and right lateral directions. It extends, and is arranged so that one end portion in the width direction coincides with the end portion of the inorganic load-bearing face material 8. The inorganic load-bearing face material 8 is provided with the inorganic load-bearing face material 8 and the back side lateral reinforcement band 14 via the back side lateral reinforcement bands 14 and 14 with respect to the upper and lower horizontal members 5 and 6 of the shaft member. It is fixed by a nail 20 (fixing tool) that penetrates through.

  Also in this embodiment, the back side lateral reinforcing band 14 is a steel plate having a thickness of 0.2 to 0.6 mm, or a nail side surface resistance yield stress level of 2 mm or more larger than the inorganic load bearing face material 8 and a specific gravity of 0.6. It consists of the above wood fiber board. Further, it is essential that the back-side lateral reinforcing band 14 is integrated with the inorganic load-bearing face material 8 by, for example, a tucker, a burr or an adhesive. Other configurations are the same as those of the third embodiment.

  In this embodiment, since the back side lateral reinforcement bands 14 and 14 are provided also in the left and right middle portions of the upper and lower ends of the inorganic load bearing face 8 on the back side, the nail head penetration resistance is particularly improved. High yield strength improvement is obtained.

[Embodiment 5]
10 and 11 show the fifth embodiment, in which the longitudinal reinforcing bands 10 and 13 are arranged at the left and right end portions on both the front and back sides of the load-bearing face material 8, respectively.

  In this embodiment, the inorganic load-bearing face material 8 is positioned between the pillar 1 and the joint spacer 2 at the left and right ends of the back side of the inorganic load-bearing face material 8 and the inorganic load-bearing face material. 8 corresponding to the back side vertical reinforcing bands 13 and 13 on the left and right end portions on the front side of the inorganic load bearing face 8. It is fixed by a nail 20 penetrating each surface-side vertical reinforcement band 10, the inorganic load-bearing face material 8, and each back-side vertical reinforcement band 13 via the surface-side vertical reinforcement bands 10, 10 extending in the vertical direction. . Each of the front-side vertical reinforcing bands 10 and the back-side vertical reinforcing bands 13 is composed of a plurality of reinforcing plates 16, 16,... As in the first and third embodiments, and the height positions thereof are also respectively. It is the same as Embodiment 1 and Embodiment 3. In addition, although the back surface side vertical reinforcement belt | band | zone 13 is the same magnitude | size and the same height position as the surface side vertical reinforcement belt | band | zone 10, in order to make an understanding easy in FIG. Slightly larger.

  And each of the front side and back side vertical reinforcing bands 10 and 13 is a steel plate having a thickness of 0.2 to 0.6 mm, or a thickness of 2 mm or more in which the degree of nail side resistance yield stress is greater than that of the inorganic load bearing face 8. It consists of a wood fiber board with a specific gravity of 0.6 or more, and is integrated with the inorganic load-bearing face material 8 in the back side vertical reinforcing band 13. Other configurations are the same as those in the first and third embodiments.

  In the case of this embodiment, the effects of the first and third embodiments are obtained synergistically, and the nail side resistance force and the nail head penetration resistance force of the inorganic load-bearing face material 8 are caused by the reinforcing bands 10 and 13 on both sides of the front and back sides. Even if a shearing force is applied to the load bearing face 8 from the side, the damage of the load bearing face 8 by the nail 20 and the penetration of the face material surface by the head of the nail 20 are reduced. Improves the yield strength.

[Embodiment 6]
FIG. 12 shows a sixth embodiment. In the fifth embodiment, the vertical reinforcing bands 10 and 13 are arranged at the left and right end portions on the front and back sides of the inorganic load bearing face material 8, whereas the same front and back sides are provided. Lateral reinforcement bands 11 and 14 are also arranged at the upper and lower ends.

  In this embodiment, in the structure of the fifth embodiment (see FIG. 11), upper and lower back side lateral reinforcement bands 14, 14 are respectively provided at the same left and right positions on the upper and lower ends of the back side of each inorganic load bearing member 8. And the left and right center portions thereof are arranged so as to coincide with the center portion of the inorganic load bearing face material 8 in the left and right width direction. Moreover, the surface side lateral reinforcement bands 11 and 11 are also arranged at the upper and lower ends of the surface side of the inorganic load-bearing face material 8 so as to extend in the left-right direction corresponding to the back side lateral reinforcement bands 14 and 14, respectively. . In the front and back surfaces of each inorganic load-bearing face material 8, the left and right positions at which the front side lateral reinforcing band 11 and the rear side lateral reinforcing band 14 are arranged are the same as those in the second and fourth embodiments. The back side lateral reinforcing band 14 is the same size as the front side lateral reinforcing band 11 and is in the same left-right position. However, in FIG. 12, for ease of understanding, the back side lateral reinforcing band 14 is slightly larger than the front side lateral reinforcing band 11. It is described.

  The upper and lower front side lateral reinforcement bands 11 and 11 and the rear side lateral reinforcement bands 14 and 14 are the same as each other, and include, for example, a single reinforcing plate 16 constituting the vertical reinforcement bands 10 and 13. It consists of a thin plate having a thickness of 500 mm. That is, the upper and lower lateral reinforcing bands 11, 11, 14, and 14 made of the reinforcing plate 16 are provided at the upper and lower ends of the front and back sides of the inorganic load bearing face material 8 with the middle portion excluding the left and right edges of the face material 8 being left and right. It extends in the lateral direction, and is arranged so that one end portion in the width direction coincides with the end portion of the inorganic load-bearing face material 8. Further, the inorganic load bearing face 8 is formed on the upper and lower horizontal members 5 and 6 of the shaft member through the horizontal reinforcement bands 11, 11, 14, and 14, and the surface side lateral reinforcement bands 11 and the inorganic load bearing strength. It is fixed by a nail 20 (fixing tool) that penetrates the face material 8 and the respective back side lateral reinforcing bands 14.

  And each of the front and back side lateral reinforcing bands 11 and 14 is a steel plate having a thickness of 0.2 to 0.6 mm, or a thickness of 2 mm or more where the nail side resistance yield stress degree is larger than that of the inorganic load bearing face material 8. It consists of a wood fiber board with a specific gravity of 0.6 or more, and is integrated with the inorganic load-bearing face material 8 in the back side lateral reinforcing band 14. Other configurations are the same as those of the fifth embodiment.

  In this embodiment, since the lateral reinforcement bands 11 and 14 are provided also in the left and right middle portions of the upper and lower ends of the inorganic load bearing face material 8, the nail head penetration resistance is particularly improved. High yield strength improvement is obtained.

[Other Embodiments]
In addition, in the said Embodiment 5 or Embodiment 6, the surface side vertical reinforcement belt | band | zone 10 and the surface side horizontal reinforcement belt | band | zone 11 which are used for the surface side of the load-bearing face material 8, and the back surface side vertical reinforcement belt | band | zone 13 and back surface side side | surface used for the back surface side. The same material may be used for the reinforcing band 14, but a different material may be used.

  As shown in FIG. 4, a wide reinforcing band 10 ′ is arranged between the adjacent inorganic load bearing members 8, 8 so as to straddle the joint between the inorganic load bearing members 8, 8. The structure fixed with the nail | claw 20 of a row | line | column, ... can be applied to Embodiment 2-6. For example, in Embodiments 2 to 6, the adjacent surface-side longitudinal reinforcing bands 10 and 10 and the back-side longitudinal reinforcing bands 13 and 13 of the both inorganic load-bearing face materials 8 and 8 may be integrated to be wide.

  Next, specific examples will be described.

(Nail-surface shear test)
The test body shown in FIG. 13 was produced. A volcanic glassy multi-layer with a thickness of 9 mm, a width of 105 mm, and a length of 350 mm on both opposing front and back sides of the shaft member 30 made of cedar pillars of length 350 mm and 105 × 105 mm (JAS structural lumber class B grade 3) The load-bearing face members 8 and 8 made of a plate are arranged so that one end of each of them is displaced from the end of the shaft member 30 by 100 mm, and the surface of each load-bearing face member 8 has the same width 105 mm and length 350 mm as the load-bearing face member 8. A galvanium steel plate reinforcing band 31 having a thickness of 0.25 mm is stacked, and the center of the reinforcing band 31 (bearing face material 8) in the width direction is formed on the shaft member 30 together with the face material 8 by two nails 20, 20 (N50). Stuck. The position of the nail 20 in the reinforcing band 31 (face material 8) on one side (FIG. 13 (a) left) is 100 mm from the end of the reinforcing band 31, and the reinforcing band 31 (surface) on the other side (right side in FIG. 13 (a)). The position of the nail 20 in the material 8) was 50 mm from the end of the reinforcing band 31. In each reinforcing band 31, the distance between the two nails 20, 20 is 100 mm. The other end portions protruding from the shaft member 30 of both the load bearing members 8 and 8 were connected by the nail 20 with the 2 × 4 member 32 interposed therebetween.

  Although the test body is not shown in addition to the reinforcing band 31 provided on the surface (surface opposite to the shaft member 30) of each face member 8 as described above, the back surface of the load bearing surface member 8 (on the shaft member 30 side). Reinforcement band provided on the surface) with an adhesive, and the reinforcement band bonded on both front and back surfaces, respectively (this reinforcement band is also fixed with a nail), and there is no reinforcement band Prepared for things. Three test bodies without this reinforcing band were prepared. An epoxy adhesive was used as an adhesive for bonding the reinforcing band 31 to the face material 8.

  A compression load in the compression direction (vertical direction in FIG. 13) is 5 mm / min between one end portion of the shaft member 30 and the other end portion (2 × 4 member 32) of the double-sided members 8 and 8 in each specimen. It applied at the speed of. The relationship between the relative displacement (unit mm) of the shaft member 30 and the face members 8 and 8 at that time and the load (unit N) per nail was measured. The result is shown in FIG.

  Considering FIG. 14, when there is no reinforcing band 31, the average value is displaced by about 770 N / line by 5 mm, and by about 880 N / line by 10 mm, whereas each example with the reinforcing band 31 has a large load. It turns out that it is necessary. Specifically, by placing the reinforcing band 31 on the surface of the face material 8 and nailing, the penetration of the nail head is remarkably suppressed, and the surface-shear resistance is improved.

  In addition, the initial strength of the reinforcing band 31 on the back surface side increased. This is because, in the initial stage, side resistance due to the nail 20 is most likely to occur at the interface between the shaft member 30 and the face member 8, and a hard material is disposed in that portion.

  When the reinforcing band 31 on the back side was bonded to the face material 8 with an adhesive, a significant increase in strength was observed.

(In-plane shear test)
Using the structure of each of the above embodiments, an in-plane shear test with a test body as shown in FIGS. 2, 6, and 12 was performed. In the test body shown in FIG. 2, as described in the first embodiment, the surface-side longitudinal reinforcing bands 10 and 10 (three reinforcing plates 16 and 16 are provided on the upper and lower intermediate portions of the left and right end portions on the surface side of the load bearing member 8. ,... Are arranged in series, and this specimen was referred to as “reinforcement of the nail line longitudinal center”.

  6, as described in the second embodiment, the surface side vertical reinforcing bands 10 and 10 are provided at the upper and lower intermediate portions of the left and right end portions on the surface side of the load bearing member 8, and the upper and lower end portions on the surface side. Surface side lateral reinforcing bands 11 and 11 (one reinforcing plate 16) are respectively arranged at the left and right intermediate portions of each, and are referred to as “reinforcement of the nail line vertical and horizontal central portion”.

  In addition, as described in the sixth embodiment, the test body shown in FIG. 12 has the surface-side vertical reinforcing bands 10 and 10 at the upper and lower intermediate portions of the left and right end portions on the surface side of the load bearing surface 8, and the upper and lower surfaces on the surface side. Front side lateral reinforcement bands 11 and 11 are provided at the left and right intermediate parts of the end part, and back side vertical reinforcement bands 13 and 13 are provided at the upper and lower middle parts of the left and right end parts on the back side of the load bearing member 8, and upper and lower ends on the back side. The back side lateral reinforcement bands 14 and 14 are respectively arranged in the left and right middle part of the part, which is referred to as “reinforcement of the front and back of the nail line longitudinal and lateral center part”.

  105 × 105 mm cedar material is used for the column 1 as the shaft member, the joint spacer 2, the upper and lower horizontal members 5 and 6, and the load bearing member 8 is 9 mm thick, 910 mm wide, and 2730 mm long. N50 was used for the volcanic glassy multilayer board and the nail 20 of the fixture. For the reinforcing bands 10, 11, 13, and 14, one reinforcing plate made of a galvalume steel plate having a thickness of 0.25 mm, a width of 30 mm, and a length of 500 mm is used as it is (in the case of the lateral reinforcing bands 11 and 14), or three sheets. Were used in series (in the case of the longitudinal reinforcing bands 10 and 13). In addition, for the back side vertical reinforcing band 13 and the back side lateral reinforcing band 14 arranged on the back side of the load bearing face 8, by forming two rows of holes at a pitch of 20 mm and forming burrs on the back side, Roughening was performed.

  For comparison, a test was also performed on a specimen called “blank” having a structure in which only the inorganic load bearing face material 8 was fixed to the shaft member without using a reinforcing band. The result about each above test body is shown in FIG.15 and FIG.16.

  Considering these FIG. 15 and FIG. 16, the maximum load is significantly increased by arranging the reinforcing band on the face material 8. The displacement (amount of deformation) at which the wall begins to yield increases and the proof stress also increases. Similarly, the displacement and proof stress that the bearing wall reaches its end (destroyed) are also increasing.

  The present invention is extremely useful since the yield strength as a wall structure can be improved and the yield strength wall structure can be realized with good workability even when a shear force is applied from the side to the bearing surface. High availability.

1 Pillar (shaft material)
2 Joint column (shaft material)
5 Upper horizontal member (shaft member)
6 Lower horizontal member (shaft member)
DESCRIPTION OF SYMBOLS 8 Inorganic load bearing material 10, 10 'Surface side vertical reinforcement band 11 Surface side horizontal reinforcement band 13 Back surface side vertical reinforcement band 14 Back surface side horizontal reinforcement band 16 Reinforcement plate 20 Nail (fixture)

Claims (9)

The inorganic load-bearing face material is a shaft material, and the back surface side is located between the left and right ends of the inorganic load-bearing face material and the shaft material, and extends in the vertical direction from the upper and lower ends of the inorganic load-bearing face material. It is a load-bearing wall structure fixed by a fixture penetrating the inorganic load-bearing face material and the back-side vertical reinforcement band via a vertical reinforcement band,
The back side longitudinal reinforcing band is a steel plate having a thickness of 0.2 to 0.6 mm integrated with the inorganic load bearing material, or is integrated with an inorganic load bearing material and has a nail side resistance yield stress level of the inorganic load bearing surface. A load-bearing wall structure comprising a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more, which is larger than the material. In claim 1,
Between the upper and lower ends of the inorganic load bearing face material back side and the shaft member, the back side lateral reinforcing band extending in the left-right direction is located in the middle portion excluding the left and right ends of the inorganic load bearing face material,
The inorganic load-bearing face material is fixed to the shaft member via the back side lateral reinforcing band by a fixture penetrating the inorganic load-bearing face material and the back side lateral reinforcing band,
The back side lateral reinforcing band is a steel plate having a thickness of 0.2 to 0.6 mm integrated with the inorganic load bearing material, or is integrated with an inorganic load bearing material and has a nail side resistance yield stress degree of the inorganic load bearing surface. A load-bearing wall structure comprising a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more, which is larger than the material. Through the surface side longitudinal reinforcing band extending in the vertical direction the intermediate portion excluding the upper and lower ends of the inorganic load bearing face material, the inorganic load bearing face material is located on the left and right ends of the inorganic load bearing face material on the shaft member, A load bearing wall structure fixed by a fixture penetrating the surface-side longitudinal reinforcement band and the inorganic load bearing surface material,
The surface-side longitudinal reinforcing band is made of a steel plate having a thickness of 0.2 to 0.6 mm, or a wood fiber board having a specific gravity of 0.6 or more and a thickness of 2 mm or more that is greater than that of the inorganic load bearing face. Bearing wall structure, characterized by In claim 3,
On the upper and lower ends of the inorganic load bearing face surface side, the surface side lateral reinforcing band extending in the left and right direction except the left and right ends of the inorganic load bearing face material is located,
The inorganic load-bearing face material is fixed to the shaft member via the surface-side lateral reinforcement band by a fixture penetrating the surface-side lateral reinforcement band and the inorganic load-bearing face material,
The surface side lateral reinforcing band is made of a steel plate having a thickness of 0.2 to 0.6 mm, or a wood fiber board having a specific gravity of 0.6 or more and a thickness of 2 mm or more, which is greater than that of an inorganic load bearing face. Bearing wall structure, characterized by The inorganic load-bearing face material is positioned on the shaft, and the back-side vertical extending between the left and right ends on the back side of the inorganic load-bearing face material and the shaft and extending in the vertical direction between the upper and lower ends of the inorganic load-bearing face material. The surface-side longitudinal reinforcement band, the inorganic yield strength, via the reinforcement band and the surface-side longitudinal reinforcement band extending in the vertical direction corresponding to the back-side longitudinal reinforcement band at the left and right end portions on the surface side of the inorganic load-bearing face material It is a load-bearing wall structure fixed by a fixture penetrating the face material and the back side vertical reinforcing band,
The surface-side longitudinal reinforcing band is a steel plate having a thickness of 0.2 to 0.6 mm, or a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more which is greater in the nail side resistance yield stress than the inorganic load-bearing face material. On the other hand,
The back side longitudinal reinforcing band is a steel plate having a thickness of 0.2 to 0.6 mm integrated with the inorganic load bearing material, or is integrated with an inorganic load bearing material and has a nail side resistance yield stress level of the inorganic load bearing surface. A load-bearing wall structure comprising a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more, which is larger than the material. In claim 5,
Between the upper and lower ends of the inorganic load bearing face material on the back side and the shaft, the back side lateral reinforcement band extending in the left and right direction except for the left and right ends of the inorganic load bearing face material is positioned, while the surface of the inorganic load bearing face material On the upper and lower ends of the side, a front side lateral reinforcing band extending in the left-right direction corresponding to the back side lateral reinforcing band is located,
The inorganic load-bearing face material is fixed to the shaft member with the fixture penetrating the surface-side lateral reinforcement band, the inorganic load-bearing face material, and the back-side lateral reinforcement band, via the back-side lateral reinforcement band and the front-side lateral reinforcement band. And
The surface side lateral reinforcing band is a steel plate having a thickness of 0.2 to 0.6 mm, or a wood fiber board having a specific gravity of 0.6 or more and a thickness of 2 mm or more with a nail side surface yield stress greater than that of the inorganic load bearing face material. On the other hand,
The back side lateral reinforcing band is a steel plate having a thickness of 0.2 to 0.6 mm integrated with the inorganic load bearing material, or is integrated with an inorganic load bearing material and has a nail side resistance yield stress degree of the inorganic load bearing surface. A load-bearing wall structure comprising a wood fiber board having a thickness of 2 mm or more and a specific gravity of 0.6 or more, which is larger than the material. In any one of Claims 1-6,
The vertical reinforcement band is arranged so as to straddle the joint between the inorganic load bearing faces adjacent to the left and right, and is fixed with two right and left rows of fixtures so as to fasten the left and right inorganic load bearing faces. Bearing wall structure characterized by. In any one of Claims 1-7,
A bearing wall structure characterized in that a surface of the reinforcing strip made of a steel plate on the inorganic bearing surface side is roughened. In any one of Claims 1-8,
The load-bearing wall structure is characterized in that the reinforcing band is integrated with the inorganic load-bearing face material by bonding.

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