JP2008169609A - Bearing wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing wall which enables a panel material of a fixed size to be mounted on frame surfaces different in size, independent of the size of the frame surface of a building. <P>SOLUTION: Mounting fittings 22 as an interval adjusting member for the panel material 12 comprise a first U-shaped-cross-section fitting 30 which is fixed to a side portion 12A of the panel material 12, and a second approximately Π-shaped-cross-section fitting 34 which is connected and fixed to a column 20 and connected to the first fitting 30 via a screw rod 32. The first and second fittings 30 and 34 are relatively rotated via the screw rod 32, so as to adjust a distance between the first and second fittings 30 and 34. This brings about the adjustment of the length of the mounting fittings 22. Thus, an interval between the column 20 and a vertical side portion 12A of the panel material 12 is adjusted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a load-bearing wall that resists horizontal loads applied to buildings such as earthquakes and winds.

  When designing a building, seismic design is performed by a method determined by the type of structure. For example, in wooden construction, wall quantity design is performed in order to ensure earthquake resistance, and this wall quantity design determines the required length of the load-bearing wall of the building in each of the vertical and horizontal directions of the plan view. The

  Conventionally, as a load bearing wall used in such a building, a strut is provided on a frame surface surrounded by columns and beams or a foundation, or a plywood is fixed to the columns and beams with nails. Things are known. As for the load bearing wall generally used in this way, the wall magnification is determined by the Building Standard Act Construction Ordinance. The load-bearing wall is configured so that the wall amount calculated by “wall magnification × bearing wall length” satisfies the above-described wall amount design value. The “length of the load bearing wall” is the length shown on the plan view of the building.

  By the way, a panel material made of a steel plate having lattice-like ribs has been proposed as a load-bearing wall panel material having openings capable of daylighting and ventilation (Patent Document 1).

Further, Patent Document 2 proposes a synthetic resin panel material having grid-like ribs. The panel material of Patent Document 2 is advantageous in that it is lighter than the panel material of Patent Document 1 made of a steel plate and is excellent in weather resistance and corrosion resistance.
JP 2002-70213 A JP 2006-77565 A

  However, since the inventions described in Patent Documents 1 and 2 have a basic structure in which the panel material is fixed to the base, the beam, and the column with screws on four sides, the panel materials having different sizes are the size of the frame surface. There are problems in that it is necessary to prepare various types according to the situation, and it takes a lot of labor both from the viewpoint of manufacturing the panel material and from the viewpoint of management. In addition, although the content which couple | bonds and fixes a panel material by three sides is disclosed by patent document 2, there existed the same problem as four-sided joint fixation also in three-sided joint fixation.

  The present invention has been made in view of such circumstances, and a load-bearing wall capable of attaching a panel material of a certain size to a frame surface having a different size without being influenced by the size of the frame surface of the building. The purpose is to provide.

  In order to achieve the above object, the invention according to claim 1 is a load-bearing wall configured by attaching a rectangular panel material to a part or the whole of a frame surface surrounded by pillars and beams of a building and a foundation. The panel material is attached to the column, beam, or base via a spacing adjusting member whose length is variable according to the spacing between the side of the panel material and the column, beam, or base. It is characterized by being coupled and fixed.

  In order to achieve the above object, the invention according to claim 2 is a load-bearing wall configured by attaching a rectangular panel material to a part or the whole of a frame surface surrounded by pillars and beams of a building and a foundation. The panel material is made of synthetic resin, and in the load bearing wall composed of a plurality of longitudinal and lateral grid ribs, the panel material includes a side portion of the panel material and the columns, beams, or It is characterized in that it is coupled and fixed to the column, beam, or base via a distance adjusting member whose length is variable according to the distance from the base.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the spacing adjusting member is fixed to the first metal member fixed to the side portion of the panel material and the column, beam, or base. And a second metal fitting connected to the first metal fitting via a screw member, and the first metal fitting and the second metal fitting are relatively rotated via the screw member. Thus, the distance between the first metal fitting and the second metal fitting is adjusted to the interval.

  According to the first aspect of the present invention, the panel material is pillared through the spacing adjustment member whose length is variable according to the spacing between the side portion of the panel material and the pillar, beam, or base, It is fixed to the beam or foundation. By using this spacing adjustment member, it is affected by the size of the frame surface by simply arranging the panel material of the size corresponding to the minimum size or the small size among the multiple frame surfaces of the building. The panel material having a certain size can be attached to a frame surface having a different size. That is, the interval between the side of the panel material and the column, beam, or foundation differs depending on the size of the frame surface, but by adjusting the length of this interval adjustment member according to the interval, A panel material of a certain size can be attached to a frame surface having a different size.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, by using a panel material having a grid-like rib as the panel material, high earthquake resistance is obtained with a simple configuration. be able to. Moreover, by making the panel material made of synthetic resin, there is an advantage that it does not rust, has excellent weather resistance, and does not require maintenance such as painting.

  According to the third aspect of the present invention, it is possible to provide an interval adjusting member having a simple structure including the first metal fitting, the second metal fitting, and the screw rod. According to the distance adjusting member, the first metal fitting and the second metal fitting are rotated relative to each other via the screw rod, and the distance between the first metal fitting and the second metal fitting is set by the screw feeding operation. Can be easily adjusted to the interval.

  Hereinafter, a preferred embodiment of a load bearing wall according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view of a load bearing wall 10 according to an embodiment of the present invention, in which a panel member 12 and a plate material 14 constituting the load bearing wall 10 are partially cut out. Yes.

  According to the figure, in a wooden building, the rectangular panel member 12 and the plate member 14 are fitted into the frame surface surrounded by the base 16, the beam 18, and the pillars 20, 20 on both the left and right sides. 10 is configured.

  As shown in FIG. 2, the panel member 12 of the load bearing wall 10 has vertical side portions 12 </ b> A and 12 </ b> A attached to columns 20 and 20 installed on both sides of the panel member 12. By being attached via 22, 22..., They are coupled and fixed to the columns 20, 20. The two mounting brackets 22 shown in FIG. 2 are arranged at predetermined intervals on each vertical side portion 12A. However, the mounting position and the number of mounting brackets 22 are not limited to this, and the panel member 12 is not limited thereto. The mounting strength (predetermined wall strength magnification) can be secured at a position and number of positions.

  FIG. 3 is an enlarged perspective view showing a part of the panel material 12. According to the figure, the ribs 26, 26,... Regularly arranged in both the vertical and horizontal directions are integrally formed in a lattice shape inside the quadrilateral frame 24 to constitute the panel material 12. The vertical side portions 12A and 12A (only one vertical side portion 12A is shown in FIG. 3) on both sides of the frame body 24 are coupled and fixed to the column 20 via the mounting bracket 22 shown in FIG.

  The material of the panel material 12 is a high-strength hard synthetic resin, and for example, glass fiber reinforced plastic (FRP), acrylic resin, vinyl chloride resin, or the like is used. The panel material 12 exhibits strength against longitudinal and lateral loads in a plane by a plurality of ribs 26, 26,.

  In the embodiment, the panel material 12 made of FRP will be described. However, the material of the panel material 12 is not limited to a synthetic resin, may be a metal such as ordinary steel, and is not limited to a material in which a lattice is formed. A flat plate may be used. However, when it is made of FRP, it is lighter and stronger than those made of metal such as steel (specific gravity: ordinary steel 7.85, FRP bearing wall 1.7, specific strength: ordinary steel 5.2, FRP The bearing wall 12.6), weather resistance, and corrosion resistance are advantageous because of their advantages. The panel material 12 made of FRP is preferable because the material itself is light-transmitting, and therefore has excellent daylighting properties and can provide a bright and open bearing wall. Furthermore, it is preferable to use the panel material 12 having the grid-like ribs 26, 26,... Because a high seismic performance can be obtained with a simple configuration.

  With respect to the thickness of the panel material 12, as long as sufficient strength can be obtained as a load bearing wall, it is preferably as thin as possible in terms of space securing and arrangement of other members, and is practically preferably 20 to 100 mm. The thickness of the rib 26 is preferably 3 to 30 mm. Within this range, 3 to 7 mm is particularly preferable. Here, in the case of the rib 26 in which the taper is formed, the thickness of the average value is referred to as the thickness of the rib 26. The size of the lattice portion surrounded by the ribs 26 is measured at the center line of the ribs 26. When the shape of the lattice is square, 20 × 20 to 200 × 200 mm is preferable. Within this range, 20 × 20 to 55 × 55 mm is particularly preferable. Moreover, when the shape of the lattice is rectangular, the short side is preferably 20 to 150 mm and the long side is preferably 30 to 300 mm. Also, the direction of the rectangular lattice may be horizontal or vertical with respect to the horizontal. Further, the square lattice may have a shape inclined by 45 degrees with respect to the horizontal.

  Since the panel material 12 has the opening portion 28 surrounded by the ribs 26, the panel material 12 is bonded to the panel material 12, or only the panel material 12 is fitted to form a wall surface. The load bearing wall 10 having translucency can be configured.

  The plate material 14 is bonded to the surface of the panel material 12 by an adhering means such as an adhesive or a bolt. The material of the plate member 14 is, for example, a synthetic resin such as polycarbonate, glass, or the like, and a transparent material, a light diffusive material, an opaque material, or the like is appropriately used according to the use or purpose of the building. Moreover, the board | plate material 14 may be attached to the single side | surface, both surfaces, or only one part instead of the whole surface of the panel material 12. FIG. That is, the plate member 12 is attached according to preference, and is a member that is not directly related to the structural strength of the bearing wall 10.

  FIG. 4 shows the configuration of the mounting bracket 22 that is a distance adjusting member. The mounting bracket 22 includes a first bracket 30 having a U-shaped cross section that is fixed to the side portion 12 </ b> A of the panel member 12, and a screw rod (screw member) 32 that is fixed to the column 20 and is attached to the first bracket 30. And a second metal fitting 34 having a generally square cross section connected thereto.

  By adjusting the distance between the first metal fitting 30 and the second metal fitting 34 by relatively rotating the first metal fitting 30 and the second metal fitting 34 via the screw rod 32, The length is adjusted. Thereby, the interval between the vertical side portion 12A of the panel material 12 and the column 20 is adjusted.

  More specifically, the first metal fitting 30 is fixed to the panel member 12 with respect to the opening 28 surrounded by the ribs 26 of the panel member 12. A metal block (not shown) having the same shape or a little smaller is inserted into any opening 28 of the part. Then, the first metal fitting 30 formed in the shape of a channel from the end side is extrapolated to that portion as shown in FIG. 4, and the two holes 36, 36 shown in FIG. 5 formed on both sides of the first metal fitting 30. Then, bolts 38, 38 are screwed into through screw holes (not shown) formed in the central part of the metal block. Thereby, the 1st metal fitting 30 is fixed to the panel material 12 via a metal block. 5A is a front view of the first metal fitting 30, FIG. 5B is a left side view of the first metal fitting 30, and FIG. 5C is a plan view of the first metal fitting 30.

  A screw rod 32 is integrally projected on the back surface of the first metal fitting 30. The second metal fitting 34 fixed to the column 20 has flange portions 34B and 34B formed on both sides of a main body portion 34A having a U-shaped cross section, and these flange portions 34B and 34B are brought into contact with the side surface portion of the column 20. The Further, four holes 42, 42... For passing screws 40 for fixing the second metal fitting 34 to the column 20 are formed in the flange portions 34B, 34B, respectively.

  A nut 44 having a screw hole having the same diameter as the screw rod 32 is fixed inside the main body 34A of the second metal fitting 34 as shown in FIG. 6, and the surface of the main body 34A facing the nut 44 is secured. A through hole 34 </ b> C through which the screw rod 32 is passed is formed.

  Therefore, according to the mounting bracket 22, the screw rod 32 is inserted into the nut 44 through the through hole 34C of the second bracket 34, and then the second bracket 34 is rotated in the direction of the arrow in FIG. By screwing the screw rod 32 into the nut 44, the distance of the second metal fitting 34 with respect to the first metal fitting 30 is adjusted to the distance between the end 12 </ b> A of the panel material 12 and the side surface of the column 20. In addition, the screw rod 32 and the nut 44 have a small screw pitch, and the interval adjustment is finely performed.

  As described above, the load-bearing wall 10 according to the embodiment is provided via the mounting bracket 22 whose length is variable according to the distance between the vertical sides 12A and 12A of the panel material 12 and the pillars 20 and 20. The panel material 12 is coupled and fixed to the frame surface. By using this mounting bracket 22, the panel material 12 having a size corresponding to the size of the minimum size or the minority size among the plurality of frame surfaces of the building is aligned, and the size of the frame surface is affected. Without being done, the panel material 12 of a certain size can be attached to a frame surface having a different size.

  That is, the distance between the vertical sides 12A, 12A of the panel material 12 and the pillars 20, 20 varies depending on the size of the frame surface, but the length of the mounting bracket 22 is adjusted according to the distance. Thereby, the panel material 12 of a fixed size can be attached to a frame surface having a different size.

  In addition, the mounting bracket 22 of the embodiment has a structure composed of the first bracket 30, the second bracket 34, and the screw rod 32, so that an interval adjusting member having a simple structure can be provided.

  Further, in the embodiment, by using the panel material 12 having the grid-like ribs 26 as the panel material 12, high earthquake resistance can be obtained with a simple configuration. Further, since the panel material 12 is made of a synthetic resin such as FRP, there is an advantage that it does not rust, has excellent weather resistance, and does not require maintenance such as painting. Moreover, the panel material 12 made of synthetic resin has a lower thermal conductivity than the panel material made of steel, and when used as a wall material, dew condensation hardly occurs, so that the panel material 12 is excellent in usability.

  In the embodiment shown in FIGS. 2 and 4, the two side portions of the vertical side portion 12A of the panel material 12 have been described as being coupled and fixed to the columns 20 and 20 via the mounting bracket 22. However, the present invention is not limited thereto, and the lower side 12B and the upper side 12C of the panel material 12 may be coupled and fixed to the base 16 and the beam 18 via the mounting bracket 22.

  Moreover, in embodiment, although the mounting bracket 22 which consists of the 1st metal fitting 30, the 2nd metal fitting 34, and the screw rod 32 was illustrated as a space | interval adjustment member, it is not limited to this, The panel material 12 and The form is not limited as long as the distance from the pillar 20 (the base 16 or the beam 18) can be adjusted.

[Strength test results]
・ Test outline (Experiment 1)
Column core spacing: 1000 mm, column opening: □ 105
FRP lattice: lattice core spacing 30mm □, 25mm thickness, top comb blade (786w x 780h) x 3 (upper panel, middle panel, lower panel)
Mounting bracket:
Upper part of upper panel: 1 frame fixed (5th square)

Upper panel lower joint: 1 frame (second square)
Middle panel upper joint: 1 top (second square)

Middle panel lower joint: 1 frame (second square)
Lower panel upper joint: 1 frame (second square)

Bottom of lower panel: 1 frame fixed (4th square)
-Test results According to the experimental results, there was no problem even at 1/150, after which it was pushed all the way to the fracture. Destruction is caused by rotation at the top piece of the top piece of metal and FRP breaking (fibers at the intersections are removed, and then the intersections of the pieces at the panel joint are removed).

  The test results are shown in the graph of FIG. This graph is a graph showing the relationship between the load applied to the column and the displacement at that time. The vertical axis represents the load applied to the column, and the horizontal axis represents the apparent shear deformation angle with respect to the load.

  According to the graph, the wall strength magnification before reduction was 4.64 kN, and the wall magnification before reduction was 2.37.

  Moreover, the wall strength magnification after reduction was 3.71 kN (4.64 kN × 0.8), and the wall magnification after reduction was 1.89 (2.37 × 0.8).

Test outline (Experimental example 2)
Column core spacing: 1000 mm, column opening: □ 105
FRP lattice: lattice core spacing 30mm □, 25mm thickness, top comb blade (786w x 780h) x 3 (upper panel, middle panel, lower panel)
Mounting bracket:
Upper part of upper panel: 2 frames fixed (3, 5 squares)

Upper panel lower joint: 1 frame (second square)
Middle panel upper joint: 1 top (second square)

Middle panel lower joint: 1 frame (second square)
Lower panel upper joint: 1 frame (second square)

Lower part of lower panel: 2 frames fixed (3, 5 squares)
-Test results According to the experimental results, there was no problem even at 1/150, after which it was pushed all the way to the fracture. In the breakage, rotation occurred at the frame part of the upper end hardware, and the FRP was broken (the fiber at the intersection part was removed).

  The test results are shown in the graph of FIG. According to the graph, the wall strength magnification before reduction was 6.40 kN, and the wall magnification before reduction was 3.27.

  The wall strength magnification after reduction was 5.12 kN (6.40 kN × 0.8), and the wall magnification after reduction was 2.61 (3.27 × 0.8).

  The present invention can be used as a wall of a building such as a reinforced concrete structure in addition to an outer wall and a partition wall of a small wooden building.

The perspective view of the bearing wall of an embodiment Front view of load-bearing wall panel material shown in FIG. The principal part expansion perspective view of the panel material shown in FIG. 1 is a perspective view of a mounting bracket for mounting the panel material shown in FIG. 1 to a column. 3 views showing the first bracket of the mounting bracket shown in FIG. Side view showing the second bracket of the mounting bracket shown in FIG. The graph which shows the 1st test result which checked the strength property of the panel material which uses the mounting bracket The graph which shows the 2nd test result which confirmed the proof stress property of the panel material which uses the mounting bracket

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Bearing wall, 12 ... Panel material, 12A ... Vertical side part, 12B ... Lower side part, 12C ... Upper side part, 14 ... Plate material, 16 ... Base, 18 ... Beam, 20 ... Column, 22 ... Mounting bracket, 24 ... Frame Body, 26 ... rib, 28 ... opening, 30 ... first metal fitting, 32 ... screw rod, 34 ... second metal fitting, 44 ... nut

Claims (3)

In a load-bearing wall constructed by attaching a rectangular panel material to a part or the whole of a frame surface surrounded by pillars and beams and foundations of a building,
The panel material is coupled and fixed to the column, beam, or base via a spacing adjustment member whose length is variable according to the spacing between the side of the panel material and the column, beam, or base. Bearing wall characterized by being made. It is a load-bearing wall configured by attaching a rectangular panel material to a part or the whole of a frame surface surrounded by pillars and beams and a foundation of a building, and the panel material is made of synthetic resin and has a longitudinal direction. And in the load bearing wall consisting of a plurality of grid-like ribs in the lateral direction,
The panel material is coupled and fixed to the column, beam, or base via a spacing adjustment member whose length is variable according to the spacing between the side of the panel material and the column, beam, or base. Bearing wall characterized by being made.   The interval adjusting member is fixed to the side of the panel member, and is fixed to the pillar, beam, or base, and is connected to the first bracket via a screw member. The first metal fitting and the second metal fitting are rotated relative to each other via the screw member, and the distance between the first metal fitting and the second metal fitting is adjusted to the distance. The load-bearing wall according to claim 1 or 2.

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