JP2016008422A - Surface material for bearing wall, and bearing wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface material for a bearing wall and a bearing wall that prevents weight of the surface material from becoming excessive and enhances durability of the surface material to withstand an external force exerted horizontally.SOLUTION: A surface material 1 of a bearing wall is installed on a frame body 4 that combines a pair of vertical frame members 5 and a pair of horizontal frame members 6. The surface material 1 of a bearing wall includes a net part 2 formed by arranging a plurality of meshes 3 in an almost planar form, a left side part and a right side part fitted on the pair of vertical frame members 5, and an upper side part and a lower side part fitted on the pair of horizontal frame members 6. Each of the meshes 3 of the net part 2 has an inclined line that extends in a horizontal direction X and inclined in a vertical direction Y, and is formed to have a dimension in the vertical direction Y smaller than that in the horizontal direction X.

Description

  [Technical Field] The present invention relates to a bearing wall face member provided in a frame that is a combination of a pair of vertical frames and a pair of horizontal frames, and a bearing wall that resists external forces acting in the lateral direction as a wall body of a medium-scale structure. .

  Conventionally, a high-damping bearing wall disclosed in Patent Document 1 has been proposed in order to effectively attenuate vibration energy generated in a building during an earthquake or a strong wind by a wall provided in the building. .

  The high-damping bearing wall disclosed in Patent Document 1 is arranged in a small structure such as a residential building, and a rectangular frame is formed by framing an upper and lower horizontal frame and a vertical frame made of thin steel plates. The wall member for energy absorption which is comprised and formed many small holes is fixed to the web of the vertical frame of a rectangular frame.

  As shown in FIG. 2 (b) of Patent Document 1, the high-damping bearing wall disclosed in Patent Document 1 has an expanded metal-like perforation by stretching the left and right flanges of the channel steel in the lateral direction. A number of vertically long small holes are formed in the wall member for energy absorption in the form.

JP 2002-115355 A

  However, the high-damping bearing wall disclosed in Patent Document 1 is extended in the vertical direction and inclined in the horizontal direction because the wall member for energy absorption is fixed to the rectangular frame in a state where the channel steel is extended in the horizontal direction. Each small hole is formed in a state surrounded by a plurality of inclined lines, and each small hole is formed in a vertically long shape with a height dimension larger than a width dimension.

  At this time, the high-damping bearing wall disclosed in Patent Document 1 has each small hole formed in a vertically long shape, so that when the energy absorbing wall member is deformed by an external force acting in the lateral direction, The inclined lines of the holes are continuous in the vertical direction, and a plurality of load bearing lines extending in the vertical direction of the wall member for energy absorption and inclined in the horizontal direction are formed.

  For this reason, the high-damping bearing wall disclosed in Patent Document 1 has a small component that can resist an external force acting in the lateral direction because the bearing line extends in the longitudinal direction of the wall member for energy absorption. I cannot expect much strength.

  Therefore, the present invention has been devised in view of the above-described problems, and the object of the present invention is to prevent external force acting in the lateral direction while preventing the weight of the face material from becoming excessive. It is an object of the present invention to provide a bearing wall and a load bearing wall that can improve the yield strength of the material.

The bearing material of the bearing wall according to the first aspect of the invention is a bearing material of the bearing wall provided in a frame body in which a pair of vertical frames and a pair of horizontal frames are combined, and is formed by arranging a plurality of meshes in a substantially planar shape. A net-like part, a left side part and a right side part attached to a pair of vertical frames, and an upper part and a lower side part attached to a pair of horizontal frames,
Each of the meshes has an inclined line that extends in the horizontal direction and is inclined in the vertical direction, and each of the meshes is formed such that each of the meshes has a vertical dimension smaller than a horizontal dimension. Features.

  According to a first aspect of the present invention, there is provided the bearing material according to the first aspect, wherein the mesh portion is connected to the left side portion by the inclined line of each of the plurality of meshes when a lateral external force acts. A plurality of load bearing lines extending obliquely between the right side portion and the right side portion are formed.

  The face material of the bearing wall according to a third aspect of the present invention is the first aspect or the second aspect, wherein the mesh portion is formed by a perpendicular to the left side or the right side and the tilt line of the mesh. Is 5 ° or more and 30 ° or less.

  The face material of the load-bearing wall according to a fourth aspect of the present invention is the material according to any one of the first to third aspects, wherein the mesh is formed from a pair of parallel lines extending in the lateral direction and from both ends of the pair of parallel lines. By having the plurality of inclined lines extending while approaching, it is formed in a substantially turtle shell shape.

  The face material of the load-bearing wall according to the fifth invention is any one of the first invention to the fourth invention, and is any one of the upper part, the lower part, and an intermediate part between the upper part and the lower part. A flat portion having a substantially flat surface is provided at one or more locations.

  A load bearing wall according to a sixth aspect of the present invention is a load bearing wall that resists external force acting in the lateral direction as a wall body of a small and medium-sized structure, and is a frame that combines a pair of vertical frames and a pair of horizontal frames, A face member provided on the frame, and the face member is attached to the horizontal frame, a net-like part formed by arranging a plurality of meshes in a substantially plane shape, a left side part and a right side part attached to the vertical frame, and Each of the meshes has an inclined line extending in the horizontal direction and inclined in the vertical direction, and each of the meshes has a horizontal dimension in the horizontal direction. It is characterized by being formed smaller than the dimension in the direction.

  In the bearing wall according to a seventh aspect of the present invention, in the sixth aspect of the invention, the frame body is provided with a horizontal rail installed between the pair of vertical frames, and the face material is formed by the upper side portion and the lower side portion. A flat portion having a substantially flat surface is provided at an intermediate portion therebetween, and the flat portion is attached to the horizontal rail.

  According to 1st invention-6th invention, each mesh | network of a mesh-shaped part makes the height dimension Y1 of the vertical direction smaller than the width dimension X1 of a horizontal direction, and is formed in a substantially horizontal surface, Therefore It is possible to efficiently reduce the overall weight, prevent the overall weight of the face material from becoming excessive, and improve the total proof strength Q of the entire face material against an external force acting in the lateral direction.

  According to the first to sixth aspects of the invention, each mesh of the mesh portion is formed to be substantially horizontally long by making the height dimension Y1 in the vertical direction smaller than the width dimension X1 in the horizontal direction. The plurality of load bearing lines extending in the direction can sufficiently resist the external force in the lateral direction, and can improve the wall bearing strength against earthquakes, strong winds, and the like in the medium and small-scale structure provided with the face material.

  In particular, according to the third invention, when the inclination angle θ formed by the perpendicular to the left side or the right side and the inclination line of each mesh is 5 ° or more and 30 ° or less, per unit weight Since the gradual decrease rate of the yield strength ratio γ of the transverse component is small, the overall weight of the face material is efficiently reduced while minimizing the reduction in the total yield strength Q of the entire face material exhibited by the multiple yield lines. It can be reduced.

  In particular, according to the fourth invention, each mesh is formed in a substantially turtle shell shape, so that the mesh can be deformed in the in-plane direction until the parallel lines are connected to the inclined lines in a substantially straight line. It is possible to increase the allowable range of in-plane deformation in the lateral direction of the entire face material.

  In particular, according to the fifth aspect, by providing a flat portion on the upper portion and the lower portion, the upper portion and the lower portion can be attached without attaching a thin steel plate or the like to the upper portion or the lower portion by welding or the like. Since it can be fixed to the upper horizontal frame and the lower horizontal frame, it becomes possible to reduce the production cost of the face material, and the flat part is provided in the middle part of the face material, so that the depth direction of this flat part It is possible to improve the rigidity of the entire load bearing wall against lateral external force acting due to an earthquake or strong wind.

  In particular, according to the sixth invention, in the face material provided on the frame body, each mesh of the mesh portion is formed by making the vertical height dimension Y1 smaller than the horizontal width dimension X1. Even when a large-scale earthquake such as the Great Kanto Earthquake occurs, for example, the total proof strength Q, which is about 1.5 times higher than that of conventional face materials, is exhibited to improve the seismic performance of small and medium-sized structures. It becomes possible.

  In particular, according to the seventh aspect of the present invention, by providing the horizontal rails installed on the pair of vertical frames, it is possible to improve the rigidity of the entire bearing wall against the lateral external force acting due to an earthquake, strong wind, or the like. Therefore, it is possible to prevent the left vertical frame and the right vertical frame from being deformed while being twisted so as to be attracted to each other in the horizontal direction, and to maintain a high wall strength of the entire load bearing wall.

It is a front perspective view which shows the bearing wall to which this invention is applied. It is a front view which shows the frame of the bearing wall to which this invention is applied. It is a front view which shows the face material of the bearing wall to which this invention is applied. It is a front view which shows the modification of the face material of the bearing wall to which this invention is applied. It is an enlarged side view which shows the mesh of the mesh part in the face material of the bearing wall to which this invention is applied. (A) is an enlarged side view which shows the left side part in the face material of the bearing wall to which this invention is applied, (b) is an enlarged side view which shows the right side part. (A) is an enlarged plan view which shows the upper part in the face material of the bearing wall to which this invention is applied, (b) is an enlarged bottom view which shows the lower part. It is an enlarged front view which shows the mesh of the mesh part in 1st Embodiment of the bearing material of the bearing wall to which this invention is applied. (A) is an enlarged front view which shows the opening part in 1st Embodiment of the face material of the load-bearing wall to which this invention is applied, (b) is an enlarged front view which shows the surface area of the steel material surrounding an opening part. . (A) is a front view which shows the state before the load-bearing line in 1st Embodiment of the bearing material of the load-bearing wall to which this invention is applied, and (b) is after the load-bearing line was formed. It is a front view which shows the state. It is an enlarged front view which shows the process in which a bearing wire is formed in the mesh part in 1st Embodiment of the face material of the bearing wall to which this invention is applied. It is an enlarged front view which shows the deformation | transformation angle in which a bearing line is formed in the mesh part in 1st Embodiment of the face material of the bearing wall to which this invention is applied. It is a graph which shows the relationship between the yield strength ratio and inclination angle in the face material of the bearing wall to which the present invention is applied. It is an enlarged front view which shows the mesh of the mesh part in 2nd Embodiment of the face material of the bearing wall to which this invention is applied. (A) is an enlarged front view which shows the opening part in 2nd Embodiment of the bearing material of the bearing wall to which this invention is applied, (b) is an enlarged front view which shows the surface area of the steel material surrounding an opening part. . It is an enlarged front view which shows the process in which a bearing wire is formed in the mesh part in 2nd Embodiment of the bearing material of the bearing wall to which this invention is applied. (A) is a front view which shows the state before the load-bearing line in 2nd Embodiment of the bearing material of the load-bearing wall to which this invention is applied, (b) after the load-bearing line was formed It is a front view which shows the state. (A) is a front view which shows the load-bearing line extended in the horizontal direction in the face material of the load-bearing wall to which this invention is applied, (b) is a front view which shows the load-bearing line extended in the vertical direction in the conventional face material. is there. It is a back perspective view showing the state where the crosspiece was provided in the load-bearing wall to which the present invention is applied. It is a back perspective view which shows the state in which the protrusion part was formed in the flat part of the intermediate part in the face material of the bearing wall to which this invention is applied. It is a graph which shows the relationship between the secant rigidity of the bearing wall to which this invention is applied, and a rotation angle.

  Hereinafter, the form for implementing the bearing material face material 1 to which the present invention is applied and the load bearing wall 7 to which the present invention is applied will be described in detail with reference to the drawings.

  As shown in FIG. 1, a bearing wall face material 1 to which the present invention is applied is provided on a frame 4 of a bearing wall 7 to which the present invention is applied. The bearing wall 7 to which the present invention is applied is used, for example, as a wall body such as a small-scale structure such as a two-story wooden house or a medium-scale structure slightly larger in scale.

  The face material 1 of the bearing wall to which the present invention is applied is a net-like building material such as expanded metal. The expanded metal is arranged in a substantially staggered pattern by, for example, extending a plurality of cuts in a substantially flat steel plate with a saw blade and shifting the blades by a half of the mesh and extending the cuts. It is manufactured as a reticulated face material having a plurality of reticulates 3.

  The face material 1 of the bearing wall to which the present invention is applied is attached to a frame body 4 in which a pair of vertical frames 5 and a pair of horizontal frames 6 are combined. The frame 4 is fixed to structural members such as girders, pillars, and foundations of small and medium-sized structures. As shown in FIG. 2, the pair of vertical frames 5 and the pair of horizontal frames 6 are connected to each other. By being connected substantially vertically, they are combined in a substantially rectangular shape in front view.

  For the pair of vertical frames 5, steel having a substantially C-shaped cross section is used for the left vertical frame 51 and the right vertical frame 56, and the left vertical frame 51 and the right vertical frame 56 are spaced at a predetermined interval in the horizontal direction X. Are provided substantially parallel to each other. For the pair of horizontal frames 6, steel having a substantially C-shaped cross section is used for the upper horizontal frame 61 and the lower horizontal frame 66, and the upper horizontal frame 61 and the lower horizontal frame 66 have a predetermined interval in the vertical direction Y. Are provided substantially parallel to each other.

  As shown in FIG. 3, the bearing wall face material 1 to which the present invention is applied includes a net-like portion 2 extending in a substantially planar shape in the longitudinal direction Y and the lateral direction X in a front view, and is substantially rectangular in a front view. It is formed. The bearing wall face material 1 to which the present invention is applied includes a left side portion 11 and a right side portion 12 that extend in the longitudinal direction Y in the front view and are provided on the left and right side ends, and extend in the lateral direction X in the front view on the upper and lower side ends. The upper side part 13 and the lower side part 14 which are provided are provided.

  The bearing material face material 1 to which the present invention is applied is provided with a flat portion 16 formed in a substantially flat surface and extending in the lateral direction X on the upper side portion 13 and the lower side portion 14. The face material 1 of the bearing wall to which the present invention is applied, when the expanded metal is manufactured, leaves a portion where the notch is not formed in the substantially flat steel plate, and designates the portion where the notch is not formed as the upper portion 13 and the lower side. The flat part 16 in which the substantially flat surface was formed is provided by arrange | positioning in the part 14 etc. FIG.

  The face material 1 of the bearing wall to which the present invention is applied is not limited to this, and a flat portion 16 is provided in an intermediate portion 15 between the upper portion 13 and the lower portion 14 as shown in FIG. May be. The face material 1 of the bearing wall to which the present invention is applied may be provided with a flat portion 16 having a substantially flat surface at any one or more of the upper portion 13, the lower portion 14 and the intermediate portion 15, As shown in FIG. 4B, the flat portion 16 may not be provided in any of the upper side portion 13, the lower side portion 14, and the intermediate portion 15.

  The mesh portion 2 is formed by arranging a plurality of meshes 3 in a substantially planar shape by arranging a plurality of meshes 3 in a substantially staggered pattern. As shown in FIG. 5A, the mesh portion 2 is formed in a state in which a plurality of meshes 3 are substantially planar with a part of each mesh 3 protruding in the depth direction Z to form a plurality of step portions 39. Are formed side by side. Further, the mesh portion 2 is not limited to this, and as shown in FIG. 5B, the plurality of meshes 3 are arranged in a substantially planar shape in a state where a part of each mesh 3 does not protrude in the depth direction Z. May be formed.

  As shown in FIG. 6, the left side portion 11 and the right side portion 12 have a thin steel plate 17 or the like attached to the back side by welding or the like, and the thin steel plate 17 or the like is placed on the front side of the left vertical frame 51 and the right vertical frame 56. It is attached to the pair of vertical frames 5 by being fixed with bolts, screws or the like. The left side portion 11 and the right side portion 12 may be welded and joined to the thin steel plate 17 with the entire mesh 3 along the thin steel plate 17 in the longitudinal direction Y, or only with a part of the mesh 3 along the thin steel plate 17. The thin steel plate 17 may be welded.

  As shown in FIG. 7, when the flat portion 16 is provided, the upper portion 13 and the lower portion 14 are fixed to the front side of the upper horizontal frame 61 and the lower horizontal frame 66 with bolts, screws, or the like. By doing so, it is attached to the pair of horizontal frames 6. When the flat part 16 is not provided, the upper side part 13 and the lower side part 14 are attached to the back side by welding or the like, and the thin steel sheet 17 or the like is attached to the upper horizontal frame 61 and the lower horizontal frame 66. It may be attached to the pair of horizontal frames 6 by being fixed to the front side with bolts, screws or the like. At this time, the upper side portion 13 and the lower side portion 14 may be welded to the thin steel plate 17 with the entire mesh 3 along the thin steel plate 17 in the lateral direction X, or a part of the mesh 3 along the thin steel plate 17. It may be welded and joined to the thin steel plate 17 alone.

  In the bearing wall face material 1 to which the present invention is applied, the flat portion 16 is provided on the upper side portion 13 and the lower side portion 14 so that the thin steel plate 17 and the like are attached to the upper side portion 13 and the lower side portion 14 by welding or the like. The upper side portion 13 and the lower side portion 14 can be fixed to the upper horizontal frame 61 and the lower horizontal frame 66 without any problem. Thereby, the face material 1 of the load bearing wall to which the present invention is applied does not require the thin steel plate 17 to be attached to the upper side portion 13 and the lower side portion 14 by welding or the like, thereby reducing the production cost of the face material 1. Is possible.

  In the first embodiment, the face material 1 of the load-bearing wall to which the present invention is applied, each mesh 3 of the mesh portion 2 has a pair of parallel lines 31 extending in the transverse direction X and a transverse direction as shown in FIG. And an inclined line 32 extending in the X direction and inclined in the longitudinal direction Y. In the bearing wall face material 1 to which the present invention is applied, each mesh 3 of the mesh portion 2 is formed such that the height dimension Y1 in the vertical direction Y is smaller than the width dimension X1 in the horizontal direction X.

  At this time, each mesh 3 is provided with a pair of parallel lines 31 at a predetermined interval in the longitudinal direction Y, and each inclined line 32 extending from both ends of each of the pair of parallel lines 31 in the lateral direction X. Are inclined in the vertical direction Y, so that a pair of inclined lines 32 arranged side by side in the vertical direction Y are provided so as to approach each other as they extend in the horizontal direction X, thereby forming a substantially turtle shell shape.

  As shown in FIG. 9 (a), the substantially turtle shell-shaped mesh 3 is formed with a substantially turtle shell-shaped opening 30 surrounded by a pair of parallel lines 31 and four inclined lines 32. The opening area A2 in front view at the three openings 30 satisfies the relationship defined by the following equation (1).

ここで、Ｂ：平行線３１の横方向Ｘの幅、Ｓ：傾斜線３２の横方向Ｘの幅、Ｍ：開口部３０の縦方向Ｙにおける略半分の高さとする。

Here, B: the width of the parallel line 31 in the horizontal direction X, S: the width of the inclined line 32 in the horizontal direction X, and M: the height in the vertical direction Y of the opening 30 is approximately half.

  Since the substantially mesh-shaped mesh 3 is formed by cutting and stretching a substantially flat steel plate, the wire width of the parallel lines 31 is approximately twice the wire width of the inclined lines 32, and FIG. ), The surface area A1 of the steel material surrounding the opening 30 of the mesh 3 around the opening 30 of each mesh 3 satisfies the relationship defined by the following equation (2).

ここで、Ｗ：各々の網目３の開口部３０に割り振られる傾斜線３２の線材幅、２Ｗ：各々の網目３の開口部３０に割り振られる平行線３１の線材幅とする。

Here, W is the wire width of the inclined line 32 allocated to the opening 30 of each mesh 3, and 2W is the wire width of the parallel line 31 allocated to the opening 30 of each mesh 3.

  At this time, the mesh 3 having a substantially turtle shell shape has a reduced ratio of the surface area A1 of the steel material to the opening area A2 in the opening 30 of each mesh 3, so that the amount of steel used in the entire face material 1 is reduced. The steel material weight of the entire face material 1 is reduced at a predetermined weight reduction rate α.

  The face material 1 of the bearing wall to which the present invention is applied is equivalent to the case where the mesh 3 is not formed on the substantially flat steel plate by combining the surface area A1 and the opening area A2 of the steel material in the openings 30 of the plurality of meshes 3. The entire area is secured. For this reason, the face material 1 of the bearing wall to which the present invention is applied has a weight reduction rate α of the entire face material 1 on which the plurality of meshes 3 are formed, with respect to a substantially flat steel plate on which the plurality of meshes 3 are not formed. Therefore, the relationship defined by the following equation (3) is satisfied.

  The bearing wall face material 1 to which the present invention is applied is one in which an external force P in the lateral direction X acts due to an earthquake, strong wind, or the like, as shown in FIG. At this time, as shown in FIG. 11A, the mesh portion 2 is subjected to an external force P in the lateral direction X as shown in FIG. 11B from the state in which each mesh 3 has a substantially turtle shell shape. As a result, the meshes 3 are gradually deformed, and the inclined lines 32 of the meshes 3 are alternately connected to the parallel lines 31 to resist the external force P in the lateral direction X as shown in FIG. The bearing line 20 is formed.

  As shown in FIG. 8, in the bearing wall face material 1 to which the present invention is applied, each mesh 3 of the mesh portion 2 has a vertical dimension Y height Y1 smaller than a horizontal dimension X width X1. As shown in FIG. 10B, a plurality of load bearing lines 20 that resist the external force P in the lateral direction X extend in the lateral direction X between the left side portion 11 and the right side portion 12 and are vertically Inclined in the direction Y, and formed between the left side portion 11 and the right side portion 12.

  As shown in FIGS. 11 and 12, the load bearing line 20 is formed at a predetermined deformation angle φ from a substantially horizontal direction, inclined in the vertical direction Y between the left side portion 11 and the right side portion 12. . At this time, the plurality of load bearing lines 20 satisfy the relationship defined by the following equation (4) in which the quantity N formed in the vertical direction Y between the upper side portion 13 and the lower side portion 14 is satisfied. .

ここで、Ｈ：網状部２の高さ、Ｌ：網状部２の幅とする。

Here, H is the height of the mesh portion 2 and L is the width of the mesh portion 2.

  In the bearing wall face material 1 to which the present invention is applied, the inclined lines 32 of the respective meshes 3 are connected to each other to cause each of the load bearing lines 20 to exhibit the yield strength T. The sum of the direction X components becomes a total proof strength Q that resists the external force P in the lateral direction X by the plurality of proof stress lines 20. For this reason, as shown in FIG. 12, the total proof stress Q by the plurality of proof stress lines 20 is calculated by the following formulas (5) to (7).

  Even when the mesh 3 is not formed on the substantially flat steel plate, each parallel line 31 has a predetermined wire width 2W, and each inclined line 32 has a predetermined wire width W. The deformation angle φ is not 0 °.

  Here, the face material 1 of the load bearing wall to which the present invention is applied is such that each mesh 3 has a substantially turtle shell shape when the external force P in the lateral direction X is not acting, so that the inclined line of each mesh 3 is 32 and the vertical line V with respect to the left side portion 11 or the right side portion 12 are formed by a predetermined inclination angle θ, and a substantially half height M in the longitudinal direction Y of the opening 30 is defined by the following equation (8). Will be.

  At this time, the proof stress Q0 when the inclination angle θ before stretching the substantially flat steel plate is 0 ° is M = 0 by the above equation (8), so that the following equations (9) to (11) are satisfied. It will be calculated.

  The face material 1 of the load-bearing wall to which the present invention is applied is the face material 1 after stretching the substantially flat steel plate with respect to the proof strength Q0 when the inclination angle θ is 0 ° before stretching the substantially flat steel plate. The overall yield strength reduction rate β satisfies the relationship defined by the following equation (12) in relation to the total yield strength Q of the plurality of yield strength lines 20.

  At this time, in the face material 1 of the bearing wall to which the present invention is applied, the yield ratio γ of the lateral X component per unit weight is such that the weight reduction rate α of the entire face material 1 and the yield reduction rate β of the entire face material 1 By calculating the ratio, the relationship defined by the following equation (13) is satisfied.

  The face material 1 of the bearing wall to which the present invention is applied increases the opening area A2 in the opening 30 of the mesh 3 by increasing the inclination angle θ of the inclined line 32 in each mesh 3, and the above (3) As shown in the formula, the weight of the entire face material 1 is reduced.

  Moreover, the face material 1 of the bearing wall to which the present invention is applied has a longitudinal direction of the opening 30 by increasing the inclination angle θ of the inclined line 32 in each mesh 3 as shown in the above equation (8). As shown in the above formula (5), the height M of about half of Y increases, and as shown in the above formulas (6) and (7), tanφ increases and cosφ decreases. Moreover, the total proof stress Q of the entire face material 1 due to the plurality of proof stress wires 20 is reduced.

  At this time, in the bearing wall face material 1 to which the present invention is applied, the yield strength ratio γ of the lateral X component per unit weight gradually decreases as the inclination angle θ of the inclined line 32 in each mesh 3 increases. Become. In particular, when the mesh portion 2 has an inclination angle θ formed by the vertical line V with respect to the left side portion 11 or the right side portion 12 and the inclination line 32 of each mesh 3 is 5 ° or more and 30 ° or less, As shown in FIG. 13 (S = 20 mm, B = 5 mm, W = 2.5 mm plot), the gradual decrease rate of the strength ratio γ of the lateral X component per unit weight is small. For this reason, in the face material 1 of the load bearing wall to which the present invention is applied, the slope material θ of the slope line 32 is set to 5 ° or more and 30 ° or less in each mesh 3, so It is possible to efficiently reduce the weight of the entire face material 1 while suppressing the reduction of the overall total proof stress Q as much as possible.

  In the second embodiment, the face material 1 of the bearing wall to which the present invention is applied is inclined such that each mesh 3 of the mesh portion 2 extends in the horizontal direction X and is inclined in the vertical direction Y as shown in FIG. It has the line | wire 32 and is formed in a substantially rhombus shape. In the bearing wall face material 1 to which the present invention is applied, each mesh 3 of the mesh portion 2 is formed such that the height dimension Y1 in the vertical direction Y is smaller than the width dimension X1 in the horizontal direction X.

  As shown in FIG. 15, the substantially rhombic mesh 3 is surrounded by four inclined lines 32 to form a substantially rhombic opening 30. The substantially rhombus-shaped meshes 3 satisfy the relationship in which the opening area A2 in front view at the openings 30 of each mesh 3 satisfies the relationship defined by the following equation (14), and around the openings 30 of each mesh 3 The surface area A1 of the steel material surrounding the opening 30 of the mesh 3 satisfies the relationship defined by the following equation (15).

  As shown in FIG. 16 (a), the bearing material 1 of the bearing wall to which the present invention is applied has an external force P in the lateral direction X acting from each mesh 3 in a substantially rhombus shape. By gradually deforming 3, as shown in FIG. 16 (b), the inclined lines 32 of the respective meshes 3 are connected to form a load bearing line 20 that resists the external force P in the lateral direction X.

  As shown in FIGS. 14 to 17, the face material 1 of the load bearing wall to which the present invention is applied is formed by connecting the inclined lines 32 of the plurality of meshes 3 so that the transverse strength X component of the yield strength T of each load bearing line 20 is obtained. The total sum is the total proof strength Q that resists the external force P in the lateral direction X. The total proof strength Q of the plurality of proof wires 20 is calculated by the above formula (5), the following formula (16), and the following formula (17).

  In the bearing wall face material 1 to which the present invention is applied, also in the second embodiment, the yield strength ratio γ of the lateral X component per unit weight gradually decreases as the tilt angle θ of the tilt line 32 increases. In particular, when the mesh portion 2 has an inclination angle θ formed by the vertical line V with respect to the left side portion 11 or the right side portion 12 and the inclination line 32 of each mesh 3 is 5 ° or more and 30 ° or less, As shown in FIG. 13 (S = 20 mm, B = 0 mm, W = 2.5 mm plot), the gradual decrease rate of the yield strength ratio γ of the lateral X component per unit weight is small. For this reason, in the face material 1 of the load bearing wall to which the present invention is applied, the slope material θ of the slope line 32 is set to 5 ° or more and 30 ° or less in each mesh 3, so It is possible to efficiently reduce the weight of the entire face material 1 while suppressing the reduction of the overall total proof stress Q as much as possible. Each mesh 3 has a substantially rhombus shape (S = 20 mm, B = 0 mm, W = 2.5 mm) because the yield strength ratio γ increases as the width B in the lateral direction X of the parallel lines 31 increases. It is more preferable to have a substantially turtle shell shape (S = 20 mm, B = 5 mm, W = 2.5 mm).

  As shown in FIGS. 8 and 14, in the first embodiment and the second embodiment, each mesh 3 of the mesh portion 2 is formed in the longitudinal direction Y in the bearing wall face material 1 to which the present invention is applied. 18 is smaller than the width dimension X1 in the lateral direction X, the load bearing line 20 that resists the external force P in the lateral direction X is formed on the left side 11 as shown in FIG. And the right side portion 12 and extending in the lateral direction X.

  On the other hand, as shown in FIG. 18B, in the conventional face material 9, the height dimension Y1 in the vertical direction Y is made larger than the width dimension X1 in the horizontal direction X, and each mesh 93 is vertically long. Therefore, the load bearing line 90 is formed to extend in the longitudinal direction Y between the upper side portion 91 and the lower side portion 92.

  For this reason, in the conventional face material 9, the load bearing line 90 extending in the longitudinal direction Y may not be able to sufficiently resist the external force P in the lateral direction X acting due to an earthquake, strong wind, or the like. In the bearing material 1 of the bearing wall to which the present invention is applied, since the plurality of bearing lines 20 extend in the lateral direction X, the total bearing capacity Q of the lateral X component in each bearing line 20 extending in the lateral direction X is increased. The plurality of load-bearing lines 20 can sufficiently resist the external force P in the horizontal direction X acting from the left vertical frame 51 and the right vertical frame 56.

  As a result, the face material 1 of the load-bearing wall to which the present invention is applied is such that each mesh 3 of the mesh portion 2 has a height dimension Y1 in the vertical direction Y and a horizontal dimension X as shown in FIGS. By making the width dimension X1 smaller than the width dimension X1, the face material 1 is sufficiently resisted against the external force P in the lateral direction X by the plurality of load bearing lines 20 extending in the lateral direction X. It is possible to improve the wall strength against earthquakes and strong winds in the small and medium-sized structures provided.

  In addition, the bearing material 1 of the bearing wall to which the present invention is applied has an inclination angle θ of the inclined line 32 of 5 ° or more and 30 ° or less in each mesh 3 in both the first embodiment and the second embodiment. As a result, the overall weight of the face material 1 is effectively reduced, the overall weight of the face material 1 is prevented from becoming excessive, and the entire face material 1 against the external force P acting in the lateral direction X is reduced. The proof stress Q can be improved.

  As shown in FIG. 11, the bearing material face material 1 to which the present invention is applied, in particular, as shown in FIG. 11, each mesh 3 is formed in a substantially turtle shell shape so that the parallel lines 31 are inclined lines 32. The mesh 3 can be deformed in the in-plane direction until it is connected in a substantially straight line, and the allowable range of in-plane deformation in the lateral direction X of the entire face material 1 can be increased.

  As shown in FIG. 1, the bearing wall 7 to which the present invention is applied is used as a wall body of a small and medium-sized structure and resists an external force P acting in the lateral direction X due to an earthquake, strong wind, or the like. . The bearing wall 7 to which the present invention is applied includes the frame body 4 in which the face material 1 of the bearing wall to which the present invention is applied is attached to the frame body 4, and a pair of vertical frames 5 and a pair of horizontal frames 6 combined. The face material 1 provided on the frame body 4 is provided.

  As shown in FIG. 19, the bearing wall 7 to which the present invention is applied may be provided with a cross rail 41 that is installed on a pair of vertical frames 5. At this time, the crosspiece 41 is made of steel having a substantially C-shaped cross section, and both ends in the horizontal direction X are fixed to the left vertical frame 51 and the right vertical frame 56 by welding or the like. The flat part 16 provided in the intermediate part 15 is fixed to the back side of the flat part 16 with bolts, screws or the like.

  The bearing wall 7 to which the present invention is applied is not limited thereto, and the horizontal beam 41 may not be provided without the horizontal beam 41 being installed on the pair of vertical frames 5. At this time, as shown in FIG. 20, the bearing wall 7 to which the present invention is applied is formed in a substantially U shape by bending the flat portion 16 provided in the intermediate portion 15 of the face material 1 in the depth direction Z. The projected portion 18 may be formed.

  As shown in FIG. 19, the bearing wall 7 to which the present invention is applied is provided with a cross rail 41 installed on a pair of vertical frames 5, or as shown in FIG. 20, an intermediate portion 15 of the face material 1. The protrusion 18 is formed on the flat portion 16 provided on the left side frame, thereby improving the rigidity of the entire bearing wall 7 against the external force P in the lateral direction X caused by an earthquake, strong wind, etc. And the right vertical frame 56 can be prevented from being twisted and deformed so as to attract each other in the horizontal direction X.

  Thereby, the bearing wall 7 to which the present invention is applied improves the rigidity of the entire bearing wall 7 and is deformed by twisting so that the left vertical frame 51 and the right vertical frame 56 are attracted to each other in the horizontal direction X. Therefore, it is possible to prevent the frame body 4 from being excessively deformed in the in-plane direction by the external force P in the lateral direction X, and to maintain the high wall body proof stress of the entire load bearing wall 7.

  The bearing wall 7 to which the present invention is applied has, for example, a range of the rotation angle R that allows in-plane deformation in the lateral direction X of the entire face material 1 assumed in the case of a large-scale earthquake such as the Great Kanto Earthquake. (≈0.0033) rad or less.

  At this time, as shown in FIG. 21, the conventional face material 9 is formed by forming each mesh 93 in a vertically long shape and a plurality of load bearing lines 90 extending in the vertical direction Y, as shown in FIG. Furthermore, the secant rigidity when the rotation angle R is 0.0033 rad is 3.26 kN / m. On the other hand, the load bearing wall 7 to which the present invention is applied has each mesh 3 formed in a horizontally long shape, and a plurality of load bearing lines 20 extend in the horizontal direction X. Therefore, the rotation angle R is set to 0.0033 rad. The secant rigidity is 4.71 kN / m.

  Thereby, the load bearing wall 7 to which the present invention is applied is a mesh-like structure as shown in FIGS. 8 and 14 in the face material 1 of the load bearing wall to which the present invention is applied, which is provided on the frame 4 as shown in FIG. This is a case where a large-scale earthquake such as the Great Kanto Earthquake has occurred by forming each mesh 3 of the section 2 by making the height dimension Y1 in the vertical direction Y smaller than the width dimension X1 in the horizontal direction X. However, it is possible to improve the seismic performance of the small and medium-sized structure by exhibiting a total proof strength Q that is about 1.5 times higher than that of the conventional face material 9.

  As mentioned above, although the example of embodiment of this invention was demonstrated in detail, all the embodiment mentioned above showed only the example of actualization in implementing this invention, and these are the technical aspects of this invention. The range should not be construed as limiting.

1: Face material 11: Left side part 12: Right side part 13: Upper side part 14: Lower side part 15: Intermediate part 16: Flat part 17: Thin steel plate 18: Projection part 2: Reticulated part 20: Strength line 3: Mesh 30: Opening 31: Parallel line 32: Inclined line 39: Step part 4: Frame body 41: Horizontal beam 5: Vertical frame 51: Left vertical frame 56: Right vertical frame 6: Horizontal frame 61: Upper horizontal frame 66: Lower horizontal frame 7: Bearing wall X: Horizontal direction Y: Vertical direction Z: Depth direction

Claims (7)

A face material of a load bearing wall provided in a frame that combines a pair of vertical frames and a pair of horizontal frames,
A net-like portion formed by arranging a plurality of meshes in a substantially plane shape, a left side and a right side attached to a pair of vertical frames, and an upper side and a lower side attached to a pair of horizontal frames,
The mesh portion is formed such that each mesh has an inclined line extending in the horizontal direction and inclined in the vertical direction, and each mesh is formed with a vertical dimension smaller than a horizontal dimension. Characteristic bearing material for bearing walls. The mesh portion is formed by a plurality of load-bearing lines extending obliquely between the left side portion and the right side portion by connecting the inclined lines of each of the plurality of meshes when an external force acts in the lateral direction. The face material of a load bearing wall according to claim 1, wherein: The inclination angle formed by the perpendicular to the left side or the right side and the inclined line of the mesh is 5 ° or more and 30 ° or less. Bearing material of the bearing wall described. The mesh has a pair of parallel lines extending in the lateral direction and a plurality of inclined lines extending from each end of each of the pair of parallel lines so as to be formed in a substantially turtle shell shape. The face material of a load bearing wall according to any one of claims 1 to 3. The flat portion having a substantially flat surface is provided at any one or more of the upper portion, the lower portion, and an intermediate portion between the upper portion and the lower portion. The face material of the load-bearing wall of any one of 1-4. A load-bearing wall that resists external forces acting laterally as a wall of a medium- to small-scale structure,
A frame that combines a pair of vertical frames and a pair of horizontal frames, and a face material provided on the frame,
The face material has a mesh portion formed by arranging a plurality of meshes in a substantially planar shape, a left side portion and a right side portion attached to the vertical frame, and an upper portion and a lower side portion attached to the horizontal frame. ,
The mesh portion is formed such that each mesh has an inclined line extending in the horizontal direction and inclined in the vertical direction, and each mesh is formed with a vertical dimension smaller than a horizontal dimension. Characteristic bearing wall. The frame body is provided with a horizontal beam constructed between a pair of the vertical frames,
The face material is provided with a flat part having a substantially flat surface at an intermediate part between the upper part and the lower part, and the flat part is attached to the horizontal rail. The bearing wall according to claim 6.

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