JP2021063345A - Wooden panel earthquake-resistant wall - Google Patents

Abstract

To provide a joint structure having lighting properties, beautiful appearance and earthquake resistance by arranging wooden panels 6 in a checkered pattern and combining them with a joint metal.SOLUTION: A joint structure is provided with a first wooden panel 6A, a second wooden panel 6B, and a third wooden panel 6C arranged in a checkered pattern with each other. The device further is provided with: a first metal fitting 10L that is pinned and fixed across one side of the left corner edges of the first wooden panel 6A and one side of the right corner edges of the second wooden panel 6B that is placed opposite the left corner edge, and a second metal fitting 10R that is pinned and fixed across one side of the right corner edges of the first panel and one side of the left corner edges of the third wooden panel 6C that is placed opposite the right corner edge.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wooden panel shear wall in which wooden panels such as CLT (Cross Laminated Timber) are arranged in multiple stages between floors or horizontal members on the upper and lower floors.

A technique is known in which a wall is constructed by joining a plurality of panels in a checkered pattern to provide an opening in the wall to improve daylighting, and each panel arranged in a checkered pattern improves the aesthetic appearance of the wall. ing.
For example, in Patent Document 1, a plurality of metal vertical ribs and metal horizontal ribs are installed in a square space surrounded by a left pillar, a right pillar, an upper beam, and a lower beam to form a square shape. After dividing the space into small grid-like spaces, a steel plate earthquake-resistant wall is described in which some of the small spaces are closed with square steel plates (panels) so as to form a checkered pattern.
In Patent Document 2, a pair of vertical metal frames separated in the left-right direction are installed in a square space surrounded by a left pillar, a right pillar, an upper beam, and a lower beam, and a plurality of vertical frames are provided between the vertical frames. Described is a steel plate seismic wall in which horizontal metal members of a book are attached at intervals in the vertical direction, a square steel plate (panel) is attached to a vertical frame, and a checkered shape is attached to the horizontal member.

Further, in order to incorporate the texture of wood into the exterior, a wall using a wooden panel such as CLT has been proposed.
For example, in Patent Document 3, an upper wall body made of a quadrangular CLT joined downward to the lower surface of an upper beam and a quadrangular shape joined upward to the upper surface of a base and the upper surface adjacent to the lower surface of the upper wall body. A wooden seismic wall including a lower wall body made of CLT and a wall joint portion for joining the upper wall body and the lower wall body is described. The wall joint is composed of a gusset plate (perforated steel plate) that is inserted and placed in the groove of the upper wall and the groove of the lower wall, and a drift pin that connects the gusset plate, the upper wall, and the lower wall, respectively. Has been done.

Japanese Unexamined Patent Publication No. 2008-88632 Japanese Unexamined Patent Publication No. 2014-118775 JP-A-2018-80569

In order to incorporate the texture of wood into the appearance, etc., Patent Document 3 proposes a wooden earthquake-resistant wall that can prevent brittle fracture by using a wall body made of CLT, but the front surface of the wall is hardly changed. There is a problem that the image becomes dark and the aesthetic appearance is easily spoiled. Further, there is a problem that the daylighting property cannot be ensured because the light is blocked by the wall. On the other hand, in the techniques described in Patent Document 1 and Patent Document 2, the wood texture is impaired, but the steel plate is attached in a checkered shape to improve the aesthetic appearance and daylighting of the wall while ensuring earthquake resistance. There is.
In order to solve these problems, in the present invention, a plurality of wooden panels are arbitrarily arranged in a checkered shape, etc., and combined with a metal joint to have aesthetics and daylighting, and between wooden panels having earthquake resistance. It is an object of the present invention to provide a joint structure of a wooden panel and a seismic wall of a wooden panel.

The main feature of the present invention is a seismic wall in which wooden panels such as CLT are arranged in multiple stages between the floors or horizontal members on the upper and lower floors, and the arrangement configuration is such that there is a gap between adjacent wooden panels in the horizontal direction. Along with the provision, the vertical wooden panels are alternately constructed by overlapping the corners with the wooden panels and combining them with the metal joints.
Specifically, the joint structure between the wooden panels according to the present invention includes a first wooden panel having two left and right corners on the upper side or the lower side and one side of the left corner of the first wooden panel. On the other hand, the second wooden panel arranged with one side of the upper right or lower right corner facing each other and the upper left or one side of the right corner of the first wooden panel. A third wooden panel arranged at a lateral position of the second wooden panel with one side of the lower left corner adjacent to the second wooden panel, and the second wooden panel and the third wooden panel. It straddles the space formed between them, one side of the left corner of the first wooden panel, and one side of the right corner of the second wooden panel arranged adjacent to the left corner. It straddles the first metal fitting to be pinned, one side of the right corner of the first panel, and one side of the left corner of the third wooden panel arranged adjacent to the right corner. It is characterized by being provided with a second metal fitting that is pinned and fixed.
Further, the wooden panel shear wall according to the present invention is characterized by having a joint structure between the wooden panels described above.

According to the present invention, a plurality of wooden panels are arbitrarily arranged in a checkered shape or the like and combined with a metal joint to have aesthetics and daylighting, and a joint structure between wooden panels having earthquake resistance, and wooden. Panel seismic walls can be constructed.

(A) is a front view of a building to which the joint structure according to the present invention is applied, and (b) is a view for explaining the concept of the joint structure according to the present invention. It is a figure explaining the joining structure of 1st Embodiment. It is a figure explaining an example of a wooden panel. (A) is a diagram for explaining a narrow joint fitting, and (b) is a diagram for explaining a wide joint fitting. It is a figure explaining a pin (drift pin). It is a figure explaining the 1st test body. (A) is a diagram for explaining a small panel used for the first test piece, and (b) is a diagram for explaining a large panel used for the first test piece. It is a figure which shows the load test result by the 1st test body. It is a figure explaining the 2nd test body. (A) is a diagram for explaining a small panel used for the second test piece, and (b) is a diagram for explaining a large panel used for the second test piece. It is a figure which shows the load test result by the 2nd test body. It is a figure explaining the 3rd test body. It is a figure which shows the state which attached the 3rd test piece to a loading device. It is a figure explaining the 4th test body. It is a figure explaining the 5th test body. It is a figure explaining the 6th test body. It is a figure which summarized the load test result by the 3rd test body to the 6th test body. (A) is a diagram for explaining a first modification of the joining fitting, and (b) is a diagram for explaining a joining structure using the joining fitting of the first modification. (A) is a diagram for explaining a second modification of the joining fitting, and (b) is a diagram for explaining a joining structure using the joining fitting of the second modification. It is a figure explaining the 3rd modification example of a joint metal fitting. It is a figure explaining the joining structure using the joining metal fitting of the 3rd modification. It is a figure explaining the 4th modification of a joint metal fitting. (A) is a diagram for explaining a modified example of a wooden panel, and (b) is a diagram for explaining a joining structure using a modified example of a wooden panel.

<Outline of joint structure>
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a front view of a building 1 to which the joint structure according to the present invention is applied, and FIG. 1B is a view for explaining the concept of the joint structure according to the present invention.
The building 1 shown in FIG. 1A is characterized by a wall 5 constructed between a base (horizontal member) 3 and a floor 4 on the second floor. The wall 5 improves the aesthetic appearance by joining a plurality of wooden panels 6 in a checkered shape, and forms an opening (space) SP between the wooden panels 6 adjacent to each other in the left-right direction to improve daylighting. It is improving.

With reference to FIG. 1 (b), the joint structure between the wooden panels 6 adopted in the wall 5 will be described.
This joint structure consists of a first wooden panel 6A having two left and right corners UL6A or DL6A, UR6A or DR6A on the upper or lower side, and a lower left (or upper left) corner DL6A of the first wooden panel 6A. A second wooden panel 6B arranged so that one side of the upper right (or lower right) corner portion UR6B faces one side, and a lower right (or upper right) of the first wooden panel 6A. With the third wooden panel 6C arranged at the lateral position of the second wooden panel 6B with one side of the upper left (or lower left) corner portion UL6C facing the one side of the corner portion DR6A. , The opening SP formed between the second wooden panel 6B and the third wooden panel 6C, one side (for example, the lower surface) of the lower left corner portion DL6A of the first wooden panel 6A, and the lower left corner portion. A first metal fitting 10L straddling one side (for example, the upper surface) of the upper right corner portion UR6B of the second wooden panel 6B arranged so as to face each other and being pinned and fixed by a pin 13 (for example, a drift pin), and a first It straddles one side (for example, the lower surface) of the lower right corner portion DR6A of the wooden panel 6A and one side (for example, the upper surface) of the upper left corner portion UL6C of the third wooden panel 6C arranged to face the lower right corner portion. A second metal fitting 10R, which is pinned and fixed by a pin 13, is provided.

In the connection structure having the above configuration, even if the aesthetic appearance is improved by joining the corners DL6A and UR6B, DR6A and UL6C of each of the wooden panels 6A, 6B and 6C to form a checkered pattern, each of them. The required joint strength can be obtained by the metal fittings 10L and 10R.
Further, since the metal fittings 10L and 10R are pinned and fixed by the pins 13, even if an excessively large external force is applied to the joint portion, before the corners of the wooden panels 6A, 6B, and 6C are damaged. By bending the pin 13 in advance, it is possible to prevent damage to the corner portions DL6A, UR6B, DR6A, UL6C, and other parts. Further, the joint strength can be adjusted for each corner by combining the metal fittings 10L and 10R and the pin 13.
Therefore, a plurality of wooden panels 6 (6A to 6C) can be arranged in a checkered pattern and combined with metal fittings 10 and pins 13 (joining hardware) for joining, and as a result, while having daylighting and aesthetics, An earthquake-resistant wall 5 (a unit in which a plurality of wooden panels 6 are joined) can be configured.

<About Building 1>
The building 1 shown in FIG. 1 has a base 3 formed over a plurality of foundations 2 arranged at predetermined lateral intervals, and a floor 4 composed of CLT on the second floor (hereinafter referred to as “CLT”). A CLT floor 4) is provided, and a wall 5 is provided between the base 3 and the CLT floor 4. In this building 1, the vertical load or the horizontal load applied to the building 1 by the wall 5 or both are borne.
A part of the wall 5 in the building 1 is made by stacking quadrilateral wooden panels 6 (CLT blocks) made by CLT in three stages in a checkered shape, and a plurality of wooden panels 6 are made into a checkered shape. The aesthetic appearance is improved by joining, and the opening SP is formed by separating the wooden panels 6 arranged at the same height position in the left-right direction to improve the lighting property. In the wall 5, an opening / closing door 7 is installed in the opening SP serving as an entrance / exit, and a window glass 8 is installed in a part of the other opening SP.
Since the wall 5 bears a vertical load, a horizontal load, or both, sufficient strength is required at the joint between the wooden panels 6. Therefore, in the present embodiment, the corner portion of one wooden panel 6 and the corner portion of the other wooden panel 6 arranged diagonally above or diagonally below the wooden panel 6 are joined to the joint fitting 10 ( The narrow joint fitting 10A, the wide joint fitting 10B, see FIG. 4), and the pin 13 are used for joining. Hereinafter, the joint structure will be described.

<About the joint structure>
FIG. 2 is a diagram for explaining the joining structure of the first embodiment, and shows a part of the wall 5 described in FIG. The wall 5 shown in FIG. 2 is formed by stacking three wooden panels 6 in a checkered pattern, and adjacently arranging (contacting or approaching) the wooden panels 6 in an oblique vertical positional relationship. The corners of the wooden panel 6 are joined by the joining metal fitting 10.
Regarding the wall 5 shown in FIG. 2, for convenience, the wooden panel 6 on the upper left side is the upper left panel 61, the wooden panel 6 on the upper right side is the upper right panel 62, and the wooden panel 6 on the middle left side is the middle left panel. 63, the wooden panel 6 in the center of the middle row is the middle panel 64, the wooden panel 6 on the right side of the middle row is the right panel 65 in the middle row, the wooden panel 6 on the lower left side is the left panel 66 in the lower row, and the wooden panel on the right side of the lower row. 6 is called the lower right panel 67.
In this wall 5, for example, the lower left corner portion DL61 of the upper left panel 61 and the upper right corner portion UR63 of the middle left panel 63 are joined by a joining metal fitting 10. Similarly, the lower right corner portion DR61 of the upper left panel 61 and the upper left corner portion UL64 of the middle middle panel 64 are joined by the joining metal fitting 10.

The upper left panel 61 has a horizontally long rectangular shape when viewed from the front, and is joined to the left side of the lower surface of the CLT floor 4 by one wall floor shear metal fitting 21 and two wall floor tension tension metal fittings 22. The wall floor shear fitting 21 is attached to the center of the left and right on the upper surface of the upper left panel 61, and the wall floor tensile tension fitting 22 is attached to the left side and the right side of the upper surface of the upper left panel 61, respectively.
The upper right panel 62 is joined to the lower right side of the lower surface of the CLT floor 4, and an opening SP is formed between the upper right panel 62 and the upper left panel 61 arranged on the left side. The upper right panel 62 has a horizontally long rectangular shape when viewed from the front, and has the same dimensions as the upper left panel 61 in the present embodiment. The upper right panel 62 is joined to the CLT floor 4 by one wall floor shear metal fitting 21 and two wall floor tension tension metal fittings 22. The wall floor shear fitting 21 is attached to the center of the left and right on the upper surface of the upper right panel 62, and the wall floor tensile tension fitting 22 is attached to the left side and the right side of the upper surface of the upper right panel 62, respectively.

The middle left panel 63 has a vertically long rectangular shape when viewed from the front, and is arranged at the lower left of the upper left panel 61. The upper surface of the upper right corner portion UR63 of the middle left panel 63 faces the lower surface of the lower left corner portion DL61 of the upper left panel 61, and the upper right corner portion UR63 of the middle left panel 63 and the lower left corner of the upper left panel 61. The corner portion DL61 is joined by the joining metal fitting 10 and the pin 13.
The lower left panel 66 is arranged at the lower right of the middle left panel 63, and the lower surface of the lower right corner DR 63 of the middle left panel 63 faces the upper surface of the upper left corner UL 66 of the lower left panel 66. .. Then, the lower right corner portion DR63 of the middle left panel 63 and the upper left corner portion UR66 of the lower left panel 66 are joined by the joining metal fitting 10 and the pin 13.

The middle panel 64 has a horizontally long rectangular shape when viewed from the front, and has the same dimensions as the upper left panel 61 in the present embodiment. The upper left panel 61 is on the upper left of the middle middle panel 64, the upper right panel 62 is on the upper right of the middle middle panel 64, and the lower left panel 66 is on the lower left of the middle middle panel 64. The lower right panel 67 is arranged in the lower right. Then, the upper left corner UL64 of the middle middle panel 64 and the lower right corner DR61 of the upper left panel 61, the upper right corner UR64 of the middle middle panel 64, the lower left corner DL62 of the upper right panel 62, and the middle middle panel 64. The lower left corner DL64 and the upper right corner UR66 of the lower left panel 66, and the lower right corner DR64 of the middle middle panel 64 and the upper left corner UL67 of the lower right panel 67 are the joint fitting 10 and the pin 13, respectively. Joined by.
The middle right panel 65 has a vertically long rectangular shape when viewed from the front, and has the same dimensions as the middle left panel 63 in the present embodiment. The middle right panel 65 is arranged at the lower right of the upper right panel 62, and the upper surface of the upper left corner portion UL65 faces the lower surface of the lower right corner portion DR 62 of the upper right panel 62. The lower right panel 67 is arranged at the lower left of the middle right panel 65, and the lower surface of the lower left corner DL65 of the middle right panel 65 faces the upper surface of the upper right corner UR 67 of the lower right panel 67. Then, the upper left corner portion UL65 of the middle right panel 65 and the lower right corner portion DR62 of the upper right panel 62 are joined by the joining metal fitting 10 and the pin 13, and the lower left corner portion DL65 of the middle right panel 65 and the lower right panel are joined. The upper right corner portion UR67 of 67 is joined by the joining metal fitting 10 and the pin 13.

The lower left panel 66 has a horizontally long rectangular shape when viewed from the front, and has the same dimensions as the upper left panel 61 in the present embodiment. As described above, the upper left corner portion UL66 of the lower left panel 66 is joined to the lower right corner portion DR63 of the middle left panel 63 by the joining metal fitting 10 and the pin 13, and the upper right corner portion UR66 of the lower left panel 66 is joined. Is joined to the lower left corner DL64 of the middle panel 64 by the joining metal fitting 10 and the pin 13.
Further, the lower left panel 66 is joined to the base 3 (see FIG. 1) by one wall foundation shear fitting 23 and two wall foundation tension fittings 24. The wall foundation shear metal fittings 23 are attached to the left and right centers on the lower surface of the lower left panel 66, and one wall foundation tension metal fitting 24 is attached to each of the left side and the right side on the lower surface of the lower left panel 66.
The lower right panel 67 has a horizontally long rectangular shape when viewed from the front, and has the same dimensions as the upper left panel 61 in the present embodiment. As described above, the upper left corner portion UL67 of the lower right panel 67 is joined to the lower right corner portion DR64 of the middle middle panel 64 by the joining metal fitting 10 and the pin 13, and the upper right corner portion UR67 of the lower right panel 67 is joined. Is joined to the lower left corner DL65 of the middle right panel 65 by a joining metal fitting 10 and a pin 13. The lower right panel 67 is joined to the base 3 by one wall foundation shear fitting 23 and two wall foundation tension fittings 24. The wall foundation shear metal fittings 23 are attached to the left and right centers of the lower surface of the lower right panel 67, and one wall foundation tension metal fitting 24 is attached to each of the left side and the right side of the lower surface of the lower right panel 67.

<About wooden panel 6>
Next, the wooden panel 6 will be described. FIG. 3 is a view showing an example of the wooden panel 6, specifically, a front view, a left side view, and a plan view explaining the middle middle panel 64. Since the material, the plate thickness, and the attachment portion of the joint fitting 10 provided at the corner portion are common to each of the wooden panels 6 described above, the middle panel 64 will be described as an example.
The middle middle panel 64 is a wooden panel having a horizontally long rectangular shape when viewed from the front, and is manufactured by, for example, a CLT having a width W64 of 1400 mm, a height H64 of 1000 mm, and a thickness t64 of 150 mm. A part of the joint fitting 10 is inserted into the four corners (upper left corner UL64, upper right corner UR64, lower left corner DL64, lower right corner DR64) provided in the middle panel 64. A fixing means 6a for pinning and fixing the inserted joining metal fitting 10 is provided.
The fixing means 6a includes a groove 6b provided at a substantially intermediate position in the thickness direction on the side end surface of the middle panel 64, and a plurality of pin insertion holes 6c penetrating the middle panel 64 in the thickness direction. have. The groove portion 6b has, for example, a width W6b of 400 mm, a height H6b of 250 mm, an interval s6b of 8 mm or 11 mm, and a pin insertion hole 6c having a diameter of 12 mm, a width direction pitch pt1 of 50 mm, and a height direction pitch pt2 of 75 mm. Yes, it is provided in a staggered pattern.
The vertical and horizontal sizes (W64, H64) of the wooden panel 6 are not limited to this example, and can be changed as appropriate. The thickness (t64) can also be changed as appropriate. For example, CLT having a thickness t64 in the range of 90 mm to 210 mm can be used. Further, the fixing means 6a may be provided not only in all four corners but also in some corners.

<About the joint fitting 10>
Next, the joint fitting 10 will be described. FIG. 4A is a diagram for explaining the narrow joint fitting 10A, FIG. 4B is a diagram for explaining the wide joint fitting 10R, and FIG. 5 is a diagram for explaining the pin 13. As will be described later, the narrow joint fitting 10A and the wide joint fitting 10B have different widths of the connecting portion 10c, which is the overlapping portion of the first plate-shaped portion 10a and the second plate-shaped portion 10b, and the wide joint fitting 10B. The width of the connecting portion 10c is wider than that of the narrow joint fitting 10A.

The narrow joint fitting 10A shown in FIG. 4A has a first plate-shaped portion 10a inserted into a groove portion 6b at a corner portion provided by one wooden panel 6 and a corner provided by the other wooden panel 6. It is a plate-shaped member having a second plate-shaped portion 10b inserted into the groove portion 6b of the corner portion and a connecting portion 10c connecting the first plate-shaped portion 10a and the second plate-shaped portion 10b, for example. It is made of a metal plate (steel plate) with a thickness of 9 mm. In the narrow joint metal fitting 10A, the first plate-shaped portion 10a and the second plate-shaped portion 10b form a substantially S-shape or a substantially Z-shape in which the connecting portion 10c is arranged between them and protrudes in the opposite directions. ing.
The first plate-shaped portion 10a has a horizontally long rectangular shape in which each corner portion is rounded in an arc shape, and a plurality of small holes 10d are formed. The first plate-shaped portion 10a of the present embodiment has, for example, a vertical H10a of 225 mm and a horizontal W10a of 340 mm. Each small hole 10d of the first plate-shaped portion 10a is circular, and has the same diameter and arrangement as the pin insertion hole 6c formed in the corner portion (fixing means 6a) of the wooden panel 6. Therefore, after inserting the first plate-shaped portion 10a into the groove portion 6b of the wooden panel 6 and aligning each small hole 10d of the first plate-shaped portion 10a with each pin insertion hole 6c, the pin 13 shown in FIG. By inserting the (drift pin) into each pin insertion hole 6c and each small hole 10d, the first plate-shaped portion 10a can be pinned and fixed to the corner portion (groove portion 6b) of the wooden panel 6. In the present embodiment, the pin 13 is a columnar member made of steel, has a diameter of 12 mm and a length of 135 mm, but is not limited to this configuration.

The second plate-shaped portion 10b has a horizontally long rectangular shape in which each corner portion is rounded in an arc shape, and a plurality of small holes 10d are formed. The second plate-shaped portion 10b of the present embodiment is manufactured to have the same dimensions as the first plate-shaped portion 10a, and the arrangement of the small holes 10d is also the same as that of the first plate-shaped portion 10a. Therefore, the second plate-shaped portion 10b can also be pinned and fixed to the corner portion (groove portion 6b) of the wooden panel 6 by the same procedure as the first plate-shaped portion 10a.
The connecting portion 10c is located between the first plate-shaped portion 10a and the second plate-shaped portion 10b, and is a horizontally long region continuous with the first plate-shaped portion 10a and the second plate-shaped portion 10b. The connecting portion 10c of the present embodiment has, for example, a vertical H10c of 60 mm and a horizontal W10c of 90 mm. Therefore, in the narrow joint metal fitting 10A, the first plate-shaped portion 10a and the second plate-shaped portion 10b are connected with their positions shifted in the left-right direction, and the overlapping portion in the left-right direction is 90 mm.

The wide joint fitting 10B shown in FIG. 4B has the same basic configuration as the narrow joint fitting 10A. For example, the wide joint fitting 10B has a first plate-shaped portion 10a inserted into the groove portion 6b at the corner portion provided by one wooden panel 6 and a groove portion 6b at the corner portion provided by the other wooden panel 6. It is a plate-shaped member having a second plate-shaped portion 10b inserted into the plate and a connecting portion 10c for connecting the first plate-shaped portion 10a and the second plate-shaped portion 10b, for example, by a steel plate having a thickness of 6 mm. It has been made.
The second plate-shaped portion 10b of the present embodiment has, for example, a vertical H10b of 225 mm and a horizontal W10a of 375 mm. Each small hole 10d of the second plate-shaped portion 10b has the same diameter and arrangement as the pin insertion hole 6c formed in the corner portion of the wooden panel 6.
The second plate-shaped portion 10b has a horizontally long rectangular shape with corners rounded in an arc shape, and a plurality of small holes 10d are formed. The second plate-shaped portion 10b of the present embodiment is manufactured to have the same dimensions as the first plate-shaped portion 10a, and the arrangement of the small holes 10d is also the same as that of the first plate-shaped portion 10a. Therefore, the second plate-shaped portion 10b can also be pinned and fixed to the corner portion of the wooden panel 6 by the same procedure as the first plate-shaped portion 10a.
The connecting portion 10c is located between the first plate-shaped portion 10a and the second plate-shaped portion 10b, and is a horizontally long region continuous with the first plate-shaped portion 10a and the second plate-shaped portion 10b. The connecting portion 10c of the present embodiment has, for example, a vertical H10c of 60 mm and a horizontal W10c of 240 mm. Therefore, in the wide joint fitting 10B, the first plate-shaped portion 10a and the second plate-shaped portion 10b are connected with their positions shifted in the left-right direction, and the range of 240 mm overlaps in the left-right direction. Therefore, also in the wide joint fitting 10B, the first plate-shaped portion 10a and the second plate-shaped portion 10b form a substantially S-shape or a substantially Z-shape.

With respect to the joining metal fittings 10A and 10B, the width W10c of the connecting portion 10c can be determined according to the size of the wooden panel 6 and the required joining strength. Further, the joint fitting 10 may have a shape different from that of the narrow joint fitting 10A and the wide joint fitting 10B. For example, the joining metal fitting 10 is not limited to the above-mentioned thickness. Further, as the material of the joining metal fitting 10, a metal material other than the steel plate may be used.

<Summary of joint structure>
According to the joint structure having the above configuration, by arranging each wooden panel 6 in a checkered pattern and combining the corners with the joint metal fitting 10, the wall has earthquake resistance while having daylighting and aesthetics. 5 can be configured.
Further, since each joint fitting 10 is pinned, even if an excessively large external force is applied to the joint portion, the pin 13 is bent before the corner portion of each wooden panel 6 is damaged. It is possible to effectively prevent damage to the corners of each wooden panel 6.
In addition, since the pin 13 having a strength higher than that of the wooden panel 6 is inserted in the thickness direction of each wooden panel 6, excessive bending in the out-of-plane direction can be suppressed at the joint portion of each wooden panel 6. The joint can be made and has a constant strength in the out-of-plane direction.
Further, the material and thickness of the joint fitting 10, the shape of the connecting portion 10c (length and width), the thickness of the pin 13 (pin insertion hole 6c, small hole 10d of each plate-shaped portion 10a and 10b), and the thickness of the pin 13 By appropriately determining the number of pins and the arrangement of the pins 13, the joint strength between the wooden panels 6 can be adjusted.
As a result, even in the wall 5 (structure surface) formed by joining the corner portions of a plurality of wooden panels 6, it is possible to eliminate the fragile portion having a locally low joining strength. Therefore, even if the wall 5 is made by joining the corners of the wooden panel 6, it is possible to obtain the same strength as the wall made of the wooden panel 6 as a whole.

<Strength test of joint structure>
Next, the strength test performed to confirm the strength of the above-mentioned joint structure will be described.
The strength test was performed on each of the first test body 100 shown in FIG. 6 and the second test body 200 shown in FIG. As will be described later, in the first test piece 100, two small panels 110 (110L, 110R) and one large panel 120 are joined by the narrow joining metal fitting 10A described with reference to FIG. 4A. In the second test body 200, two small panels 210 (210L, 210R) and one large panel 220 are joined by the wide joining metal fitting 10B described with reference to FIG. 4 (b).

<About the first test piece 100>
6A and 6B are views for explaining the first test piece 100, FIG. 7A is a view for explaining the small panel 110 used for the first test piece 100, and FIG. 7B is a view for the first test piece 100. FIG. 8 is a diagram illustrating a large panel 120 to be used, and FIG. 8 is a diagram showing a load test result by the first test body 100.
The first test body 100 shown in FIG. 6 has one large panel 120, a left small panel 110L in which the upper right surface is arranged to face the lower left surface of the large panel 120, and the lower right surface of the large panel 120. The right small panel 110R with the upper left side facing each other, the left joint fitting 130 for pinning and fixing the large panel 120 and the left small panel 110L, and the right joint for pinning and fixing the large panel 120 and the right small panel 110R. It is provided with a metal fitting 140.
The orientations of the left joint metal fitting 130 and the right joint metal fitting 140 in the first test piece 100 are different from those of the first metal fitting 10L and the second metal fitting 10R in the joint structure of FIG. 1 (b). Specifically, in the first test piece 100, in the left joint fitting 130 and the right joint fitting 140, the first plate-shaped portion 10a and the second plate-shaped portion 10b are displaced in the vertical direction. In the joint structure of FIG. 1B, the first metal fitting 10L and the second metal fitting 10R are different in that the first plate-shaped portion 10a and the second plate-shaped portion 10b are displaced in the left-right direction. ..
This is because the loading device used in the strength test is designed to apply a load in the vertical direction, and in order to test the strength in the shear direction, it was necessary to change the mounting directions of the joint fittings 130 and 140. is there.

As shown in FIG. 7A, the small panel 110 (left small panel 110L, right small panel 110R) is made of a vertically elongated rectangular CLT having a width W110 of 600 mm, a height H110 of 800 mm, and a thickness t110 of 150 mm. Has been done. A part (second plate-shaped portion 10b) of the narrow joint metal fittings 10A (left joint metal fittings 130, right joint metal fittings 140) is inserted into the upper right corner portion UR110 of the small panel 110, and the narrow joint metal fittings are inserted. A fixing means 6a for pinning and fixing the metal fitting 10A is provided.
The small panel 110 can be used for both the left small panel 110L and the right small panel 110R. For example, when the small panel 110 is used as the left small panel 110L, it may be used in the orientation shown in FIG. 7A, and when the small panel 110 is used as the left small panel 110L, the orientation shown in FIG. The back side may be inverted and the fixing means 6a may be used in a direction in which the fixing means 6a is arranged at the upper left corner of the small panel 110.
The fixing means 6a has a groove portion 6b which is a side end surface of the small panel 110 and is provided at an intermediate position in the thickness direction, and a plurality of pin insertion holes 6c which penetrate the small panel 110 in the thickness direction. There is. The groove portion 6b has a width W6b of 285 mm, a height H6b of 397.5 mm, and an interval t6b of 11 mm, and the pin insertion holes 6c have a diameter of 12 mm, a width direction pitch of 50 mm, and a height direction pitch of 75 mm, and are provided in a staggered manner. Has been done.

As shown in FIG. 7B, the large panel 120 is made of a horizontally long rectangular CLT having a width W120 of 1400 mm, a height H120 of 800 mm, and a thickness t120 of 150 mm. A part (first plate-shaped portion 10a) of the narrow joint metal fittings 10A (left joint metal fittings 130, right joint metal fittings 140) is inserted into the lower left corner portion DL120 and the lower right corner portion DR120 of the large panel 120. Further, a fixing means 6a for pinning and fixing the inserted narrow joint fitting 10A is provided.
The fixing means 6a has a groove portion 6b which is a side end surface of the large panel 120 and is provided at an intermediate position in the thickness direction, and a plurality of pin insertion holes 6c which penetrate the wooden panel 6 in the thickness direction. There is. The groove portion 6b has a width W6b of 285 mm, a height H6b of 397.5 mm, and a thickness of t6b of 11 mm, and the pin insertion holes 6c have a diameter of 12 mm, a width direction pitch of 50 mm, and a height direction pitch of 75 mm, and are staggered. It is provided.

As shown in FIG. 6, the first test piece 100 has a width W100 of 2600 mm, a height H100 of 1450 mm, and a thickness t100 of 150 mm.
Therefore, the lower left side surface of the large panel 120 and the upper right side surface of the small left panel 110L are vertically overlapped by 150 mm and arranged to face each other, and the left joint fitting 130 (narrow joint fitting 10A) and the pin 13 are used to connect the panels 110 and 120. It is pinned and fixed. Similarly, the lower right side surface of the large panel 120 and the upper left side surface of the right small panel 110R are vertically overlapped by 150 mm and arranged so as to face each other. 120 is pinned and fixed.
In the strength test using the loading device, four first test pieces 100 were prepared and the test was performed four times. In the strength test, the upper piece and the lower side of the large panel 120 are clamped by a pair of metal plates (not shown) and bolts, and an upward load (tensile load) is applied to the large panel 120 by the actuator of the loading device. It was. The amount of change in the tensile load per unit time was set to be small enough to be regarded as a static load.

The test results are shown in FIG. The vertical axis of FIG. 8 is the tensile load (kN), and the horizontal axis is the amount of deformation (mm) of the first test piece 100, in other words, the amount of relative displacement of the large panel 120 with respect to the small panels 110L and 110R.
In FIG. 8, the line marked with a cross indicates the test result of the first first test body 100, and the line marked with a triangle indicates the test result of the second first test body 100. There is. Similarly, the square-marked line shows the test result of the third first test piece 100, and the diamond-marked line shows the test result of the fourth first test piece 100. ..

In each first test piece 100, the variation in the amount of deformation with respect to the tensile load is small and substantially the same. From this, it can be seen that even if a wooden panel 6 (panel made of CLT) in which the strength of the joint portion tends to vary is used, the strength of the joint portion can be made uniform.

<About the second test piece 200>
9 is a diagram for explaining the second test body 200, FIG. 10 (a) is a diagram for explaining the small panel 210 used for the second test body 200, and FIG. 10 (b) is a diagram for explaining the second test body 200. FIG. 11 is a diagram illustrating a large panel 220 to be used, and FIG. 11 is a diagram showing a load test result by the second test body 200.
Similar to the first test piece 100, the second test piece 200 shown in FIG. 9 also has one large panel 220, a left small panel 210L, a right small panel 210R, a left joint fitting 230, and a right joint. It is equipped with a metal fitting 240.
The difference between the second test body 200 and the first test body 100 is that the wide joint metal fitting 10B shown in FIG. 4B is used as the left joint metal fitting 230 and the right joint metal fitting 240, and the second test. As shown in FIG. 10, the height H200 of the body 200 is 1300 mm (the large panel 220 and each small panel 210 are overlapped and arranged to face each other by 300 mm in the vertical direction), and the groove portion 6b of the fixing means 6a is formed. The width is 285 mm, the height is 435 mm, and the interval is 9 mm. Since the other structure of the second test body 200 is the same as that of the first test body 100, the description thereof will be omitted.

The test results are shown in FIG. The vertical axis of FIG. 11 is the tensile load (kN), and the horizontal axis is the amount of deformation (relative displacement amount, mm) of the second test piece 200.
In FIG. 11, the line marked with a cross indicates the test result of the first second test body 200, and the line marked with a triangle indicates the test result of the second second test body 200. There is. Similarly, the square-marked line shows the test result of the third second test piece 200, and the diamond-marked line shows the test result of the fourth second test piece 200. ..

As shown in the test results of FIG. 11, in each of the second test pieces 200, the variation in the amount of deformation with respect to the tensile load is small and substantially the same. From this, it can be seen that the strength of the joint portion can be adjusted.
Further, when the test result of the second test piece 200 is compared with the test result of the first test piece 100, it can be seen that the relationship between the tensile load and the amount of deformation is almost the same. From this, it can be seen that the strength of the joint structure can be adjusted by changing the shape of the joint metal fitting 10 (the width of the connecting portion 10c and the thickness of the joint metal fitting 10).

<Strength test of wall 5>
Next, the strength test of the wall 5 (structure surface) will be described. Whereas the above-mentioned strength test targeted the local strength of the joint structure, this strength test targeted the overall strength of the wall 5.
This strength test was performed on the third test body 300 shown in FIG. 12, the fourth test body 400 shown in FIG. 14, the fifth test body 500 shown in FIG. 15, and the sixth test body 600 shown in FIG. 16, respectively. Went to.

In the third test body 300 shown in FIG. 12, two upper panels 361 and 362, three middle panels 363 to 365, and two lower panels 366 and 376 are described with reference to FIG. 4 (a). The fourth test piece 400 shown in FIG. 14 has two upper panels 461 and 462, three middle panels 463 to 465, and two pieces, which are joined in a checkered shape by a narrow joining metal fitting 10A. The lower panels 466 and 467 are joined in a checkered shape by the wide joining metal fitting 10B described in FIG. 4 (b).
The fifth test piece 500 shown in FIG. 15 is obtained by joining three upper panels 561 to 563 and two lower panels 564 and 565 with a narrow joint fitting 10A and a wide joint fitting 10B. The sixth test piece 600 shown in 16 is formed by joining three wooden panels 661 to 663 by a conventional method.

<About the third test piece 300>
FIG. 12 is a diagram for explaining the third test body 300, FIG. 13 is a view showing a loading device 700 to which the third test body 300 is attached, and FIG. 17 is a view showing the third test body 300 to the sixth test body 600. It is a figure which summarized the load test result by. Note that FIG. 17 is also referred to in the description of the fourth test body 400 to the sixth test body 600, which will be described later.
In the third test piece 300 shown in FIG. 12, similarly to the wall 5 described in FIG. 2, wooden panels 6 are laminated in three stages in a checkered shape, and the lower side and the lower side of the corner portion of the wooden panel 6 located on the upper side. The upper pieces of the corners of the wooden panel 6 located on the side are opposed to each other, and both corners are joined (pinned and fixed) by the joining metal fitting 10 (narrow joining metal fitting 10A).
Regarding the third test piece 300, for convenience, the wooden panel 6 on the upper left side is called the upper left panel 361, the wooden panel 6 on the upper right side is called the upper right panel 362, and the wooden panel 6 on the middle left side. Is called the middle left panel 363, the wooden panel 6 in the center of the middle is called the middle middle panel 364, the wooden panel 6 on the right side of the middle is called the middle right panel 365, and the wooden panel 6 on the lower left is called the lower. The left panel 366 is called, and the wooden panel 6 on the lower right side is called the lower right panel 367.

The upper left panel 361 has a horizontally long rectangular shape when viewed from the front, and has a width of 1400 mm, a height of 1000 mm, and a thickness of 150 mm. Fixing means 6a (groove 6b, pin insertion hole 6c, see FIG. 3) is provided in the lower left corner and the lower right corner of the upper left panel 361, and the narrow joint fitting 10A is provided in the groove 6b. The first plate-shaped portion 10a of the above is inserted, and by inserting the pin 13 (drift pin) into the pin insertion hole 6c, the first plate-shaped portion 10a in the groove portion 6b is pinned and fixed. The groove portion 6b has a width of 397.5 mm, a height of 285 mm, and a thickness of 11 mm, and the pin insertion holes 6c have a diameter of 12 mm, a pitch in the width direction of 50 mm, and a pitch in the height direction of 75 mm, and are provided in a staggered manner.
The upper left panel 361 is joined to the left lower surface of the CLT floor 340 by two wall floor shear fittings 321 and four wall floor tension tension fittings 322. The wall floor shear metal fittings 321 are attached to the left and right center sides on the upper surface of the upper left panel 361, and two wall floor tensile tension metal fittings 322 are attached to each of the left side and the right side of the wall floor shear metal fitting 21.
Since the upper right panel 362 has the same structure as the upper left panel 361 and has the same dimensions, the description thereof will be omitted. The upper right panel 362 is joined to the lower right surface of the CLT floor 4 by one wall floor shear metal fitting 21 and four wall floor tensile tension metal fittings 322, and between the upper right panel 362 and the upper left panel 361. An opening SP is formed. The wall floor shear metal fittings 321 are attached to the left and right center sides on the upper surface of the upper right panel 362, and two wall floor tensile tension metal fittings 322 are attached to each of the left side and the right side of the wall floor shear metal fittings 321.

The middle left panel 363 has a vertically long rectangular shape when viewed from the front, and has a width of 500 mm, a height of 1000 mm, and a thickness of 150 mm. Fixing means 6a is provided at each of the upper part and the lower part of the middle left panel 363. The second plate-shaped portion 10b of the narrow joint fitting 10A is inserted into the groove 6b of the upper fixing means 6a, and the first plate-shaped portion 10a of the narrow joining fitting 10A is inserted into the groove 6b of the lower fixing means 6a. And each is pinned and fixed. Since these fixing means 6a have the same configuration as the fixing means 6a provided on the upper left panel 361, the description thereof will be omitted.
The middle panel 364 has a horizontally long rectangular shape when viewed from the front, and has a width of 1100 mm, a height of 1000 mm, and a thickness of 150 mm. Fixing means 6a is provided at each of the four corners of the middle panel 364. The second plate-shaped portion 10b of the narrow joint fitting 10A is inserted into the upper two fixing means 6a, and the first plate-shaped portion 10a of the narrow joint fitting 10A is inserted into the lower two fixing means 6a. Each is pinned and fixed.
The middle right panel 365 has a vertically long rectangular shape when viewed from the front, and in the present embodiment, the same one as the middle left panel 363 is used by inverting the front and back. Therefore, the description thereof will be omitted.

The lower left panel 366 has a horizontally long rectangular shape when viewed from the front, and has a width of 1400 mm, a height of 1000 mm, and a thickness of 150 mm. Fixing means 6a is provided in the upper left corner portion and the upper right corner portion of the lower left panel 366, and the second plate-shaped portion 10b of the narrow joint fitting 10A is inserted into the groove portion 6b to insert a pin insertion hole. The pin 13 is inserted into 6c. Since the fixing means 6a has the same configuration as the fixing means 6a provided on the upper left panel 361, the description thereof will be omitted.
The lower left panel 366 is joined to the base 330 by one wall foundation shear fitting 323 and four wall foundation tension fittings 324. The lower left corner and the lower right corner of the lower left panel 366 are provided with notches for attaching the two wall foundation tension metal fittings 324.
The lower right panel 367 uses the same one as the lower left panel 366. Therefore, the description thereof will be omitted. The lower right panel 367 is joined to the base 330 by one wall foundation shear fitting 323 and four wall foundation tension fittings 324.

As shown in FIG. 13, the third test piece 300 was attached to the loading test device 700 to perform a direct shear test. In the in-plane inner wall shear test, the positive and negative alternating numbers are repeated once, and the displacement schedule (deformation angle = deformation amount / specimen height) is 1/450, 1/300, 1/200, 1/150, 1/100, 1/75. , 1/50, 1/30, sheared.
That is, in the in-plane shear test, the operation of pulling the upper part (CLT floor 340) of the test piece to the right by the actuator 710 and then pushing it to the left was performed for each deformation angle specified in the displacement schedule. For example, after pulling the CLT floor 340 to the right until the deformation angle of the third test piece 300 becomes 1/450, the CLT floor 340 is pushed to the left until the deformation angle becomes -1/450. Next, the CLT floor 340 was pulled to the right until the deformation angle became 1/300, and then the CLT floor 340 was pushed to the left until the deformation angle became -1/300. Such an operation was performed according to the displacement schedule described above.

The line segments marked with a circle in FIG. 17 indicate the test results by the third test piece 300. In the third test piece 300, the displacement to the right is 60 mm (+60 mm) when a load of 400 kN (+ 400 kN) is applied to the right, and the displacement to the right is 60 mm (+ 60 mm) when a load of 400 kN (-400 kN) is applied to the left. The displacement to is 60 mm (-60 mm).

<About the 4th test piece 400>
FIG. 14 is a diagram illustrating a fourth test body 400.
The fourth test body 400 shown in FIG. 14 has the same basic configuration as the third test body 300, and has the same upper left panel 461, upper right panel 462, middle left panel 463, middle middle panel 464, and middle right panel. It includes 465, a lower left panel 466, and a lower right panel 467.
The fourth test body 400 differs from the third test body 300 in the following points. First, in the fourth test piece 400, the opposite corners are joined by the wide joining metal fitting 10B, the width of the groove 6b provided by the fixing means 6a is 435 mm, the height is 285 mm, and the interval is large. It differs from the third test body 300 in that it is 9 mm and the width of the middle panel 464 is 1400 mm. Other configurations in the fourth test body 400 are the same as those in the third test body 300. For example, the CLT floor 440, the wall floor shear metal fitting 421, the wall floor tension tension metal fitting 422, the base 430, the wall foundation shear metal fitting 423, and the wall foundation tension metal fitting 424 are the CLT floor 340 and the wall floor in the third test body 300, respectively. It corresponds to the shear metal fitting 321 and the wall floor tension tension metal fitting 322, the base 330, the wall foundation shear metal fitting 323, and the wall foundation tension metal fitting 324. Therefore, the description thereof will be omitted.
The fourth specimen 400 was also subjected to a direct shear test having the same contents as that of the third specimen 300.
The line segment marked with a cross in FIG. 17 indicates the test result by the fourth test piece 400. In the fourth test piece 400, the displacement to the right is 60 mm (+60 mm) when a load of 480 kN (+480 kN) is applied to the right, and the displacement to the right is 60 mm (+60 mm) when a load of 480 kN (-480 kN) is applied to the left. The displacement to is 60 mm (-60 mm).

<About the 5th test piece 500>
FIG. 17 is a diagram illustrating a fifth test body 500.
In the fifth test piece 500 shown in FIG. 17, by using a plurality of types of wooden panels 6 having different sizes, the sizes of the openings SP formed between the adjacent panels are different, and the size of each opening SP is different. The points where the wooden panels 6 are joined by using both the wide joint fitting 10A shown in FIG. 4A and the wide joint fitting 10B shown in FIG. 4B are the third test piece 300 and the third specimen. It is different from the test piece 400 of 4.
In the fifth test piece 500, three wooden panels 6 are arranged in each of the upper and lower stages, and for some of the wooden panels 6, the corners are arranged so as to face each other and the fixing means 6a (groove 6b, It is joined by a pin insertion hole 6c).
For convenience, in the following description, the three wooden panels 6 located on the upper stage side are referred to as an upper first panel 561, an upper second panel 562, and an upper third panel 563 from the left end to the right side, and are located on the lower stage side. The three wooden panels 6 are referred to as a lower first panel 564, a lower second panel 565, and a lower third panel 566 from the left end to the right side.

The upper first panel 561 has a vertically long rectangular shape when viewed from the front, and has a width of 500 mm, a height of 1000 mm, and a thickness of 150 mm. The upper first panel 561 is joined to the lower left lower surface of the CLT floor 540 by two wall floor tension tension metal fittings 522. The two wall-floor tension-pull metal fittings 522 are attached to the left-right center and the right side on the upper surface of the upper first panel 561.
A fixing means 6a is provided on the lower surface of the upper first panel 561, a first plate-shaped portion 10a of the wide joining metal fitting 10B is inserted into the groove portion 6b, and the inserted first plate-shaped portion 10a is pinned. It is fixed. The groove portions 6b have a width of 397.5 mm, a height of 285 mm, and an interval of 9 mm, and the pin insertion holes 6c have a diameter of 12 mm, a pitch in the width direction of 50 mm, and a pitch in the height direction of 75 mm, and are provided in a staggered manner.

The upper second panel 562 has a horizontally long rectangular shape when viewed from the front, and has a width of 1950 mm, a height of 1000 mm, and a thickness of 150 mm.
A fixing means 6a is provided in the lower left corner portion DL562 of the upper second panel 562, and the first plate-shaped portion 10a of the wide joint fitting 10B is inserted into the groove portion 6b, and the inserted first plate-shaped portion 10a is inserted. Is pinned and fixed. Since the groove portion 6b is the same as the groove portion 6b provided on the lower surface of the upper first panel 561, the description thereof will be omitted.
The fixing means 6a is also provided in the lower right corner portion DR562 of the upper second panel 562, and the first plate-shaped portion 10a of the narrow joint fitting 10A is inserted into the groove portion 6b, and the inserted first plate-shaped portion 10a is inserted. The portion 10a is pinned and fixed. The groove portions 6b have a width of 435 mm, a height of 285 mm, and an interval of 11 mm, and the pin insertion holes 6c have a diameter of 12 mm, a width direction pitch of 50 mm, and a height direction pitch of 75 mm, and are provided in a staggered manner.
The upper second panel 562 is joined to the lower surface on the left side of the center of the CLT floor 540 by three wall floor shear fittings 521 and four wall floor tension tension fittings 522. The wall floor shear fitting 521 is attached to the left and right center sides of the upper surface of the upper second panel 562, and the wall floor tensile tension fitting 522 is on the left side and the right side of the wall floor shear fitting 521 on the upper surface of the upper second panel 562. Two can be attached to each of.

The upper third panel 563 has a vertically long rectangular shape when viewed from the front, and has a width of 450 mm, a height of 1000 mm, and a thickness of 150 mm. The upper third panel 563 is joined to the lower right lower surface of the CLT floor 4 by two wall floor tension tension metal fittings 522. The wall floor tension tension metal fitting 522 is attached to the left side and the right side of the upper surface of the upper right panel 564, respectively.

The lower first panel 564 has a vertically long rectangular shape when viewed from the front, and has a width of 1500 mm, a height of 2000 mm, and a thickness of 150 mm. Fixing means 6a is provided in each of the upper left corner portion UL564 and the upper right corner portion UR564 of the lower first panel 564, and the second plate-shaped portion 10b of the wide joint fitting 10B is inserted into the groove portion 6b. The inserted second plate-shaped portion 10b is pinned and fixed. The lower first panel 564 is joined to the base 530 by one wall foundation shear fitting 523 and four wall foundation tension fittings 524. Further, notches for attaching the two wall foundation tension metal fittings 524 are provided in the lower left corner portion and the lower right corner portion of the lower first panel 564.

The lower second panel 565 has a horizontally long rectangular shape when viewed from the front, and has a width of 1500 mm, a height of 1000 mm, and a thickness of 150 mm. The lower second panel 565 is attached between the lower first panel 564 and the lower third panel 566 via a mounting bracket 525. The mounting bracket 525 is provided on the left side surface and the right side surface of the lower third panel 567, and joins the lower second panel 565 to each of the lower first panel 564 and the lower third panel 566.
The lower third panel 566 has a vertically long rectangular shape when viewed from the front, and has a width of 1500 mm, a height of 2000 mm, and a thickness of 150 mm. The upper right corner portion of the lower third panel 566 is joined by extending the two wall floor tension tension metal fittings 522 that join the upper third panel 563 downward. A fixing means 6a is provided in the upper left corner portion UL566 of the lower third panel 566, and the second plate-shaped portion 10b of the narrow joint fitting 10A is inserted into the groove portion 6b, and the inserted second plate-shaped portion 10b is inserted. The portion 10b is pinned and fixed. The fixing means 6a has the same configuration as the fixing means 6a provided in the lower right corner DR563 of the upper third panel 563. The lower fourth panel 568 is joined to the base 530 by one wall foundation shear fitting 523 and four wall foundation tension fittings 524. The lower left corner and the lower right corner of the lower fourth panel are provided with notches for attaching the two wall foundation tension metal fittings 524.

A direct shear test with the same contents as that of the third test piece 300 was also performed on the fifth test piece 500.
The line segment marked with a triangle in FIG. 17 indicates the test result by the fifth test piece 500. In the fifth test piece 500, the displacement to the right is 40 mm (+40 mm) when a load of 460 kN (+460 kN) is applied to the right, and the displacement to the right is 40 mm (+40 mm) when a load of 460 kN (-460 kN) is applied to the left. The displacement to is 40 mm (-40 mm).

<About the 6th test piece 600>
FIG. 16 is a diagram illustrating a sixth test body 600.
In the sixth test piece 600 shown in FIG. 16, large wooden panels 6 are arranged on the left side and the right side at intervals in the left-right direction, and the upper portions of both wooden panels 6 are connected by a small wooden panel 6. This is a test piece manufactured by the so-called conventional method. For convenience, in the following description, the large wooden panel 6 located on the left side of the sixth test piece 600 is referred to as the left large panel 661, and the large wooden panel 6 located on the right side is referred to as the right large panel 662, and is referred to as the upper center. The small wooden panel 6 located in is called a small and medium-sized panel 663.
The large left panel 661 has a vertically long rectangular shape when viewed from the front, and has a width of 1400 mm, a height of 3000 mm, and a thickness of 150 mm. The left large panel 661 is joined to the left lower surface of the CLT floor 640 by two wall floor shear fittings 621 and four wall floor tension tension fittings 622. The wall floor shear metal fittings 621 are attached to the left and right center portions of the upper surface of the left large panel 661, and the wall floor tension tension metal fittings 622 are two on the left side of the wall floor shear metal fittings 621 and on the right side of the wall floor shear metal fittings 621. Two are attached.
The left large panel 661 is joined to the base 630 by one wall foundation shear fitting 623 and four wall foundation tension fittings 624. Each of the lower left corner and the lower right corner of the left large panel 661 is provided with notches for attaching two wall foundation tension metal fittings 624.
Like the left large panel 661, the right large panel 662 has a vertically long rectangular shape when viewed from the front. Since the right large panel 662 of the present embodiment has the same configuration as the left large panel 661, the description thereof will be omitted.
The small and medium-sized panel 663 is arranged in the upper part between the left large panel 661 and the right large panel 662, and is joined to each of the left large panel 661 and the right large panel 662 by a joint fitting 625. As a result, the opening SP is formed below the small and medium-sized panel 663.

The sixth test body 600 was also subjected to a direct shear test having the same contents as that of the third test body 300.
The line segment marked with a square in FIG. 17 indicates the test result by the sixth test piece 600. In the sixth test piece 600, the displacement to the right exceeds 100 mm (+100 mm) when a load of 310 kN (+ 310 kN) is applied to the right, and the displacement to the right when a load of 300 kN (-300 kN) is applied to the left. The displacement to is 60 mm (-60 mm). As described above, in the sixth test body 600 produced by the conventional method, the joint strength between the panels is lower than that in the third test body 300 to the fifth test body 500.

<About test results>
As shown in FIG. 17, when the third test body 300 to the fifth test body 500 and the sixth test body 600 have the same amount of deformation, the third test body 300 to the fifth test body 500 However, since the load is larger than that of the sixth test body 600, the third test body 300 to the fifth test body 500 to which the joint structure according to the present invention is applied is the sixth test body 600 produced by the conventional method. It can be said that it has high strength compared to.
Further, a plurality of types of wooden panels 6 having different sizes are joined to form a plurality of openings SP having different sizes, and the narrow joining metal fittings 10A shown in FIG. 4A and FIG. 4B are shown. The fifth test body 500 using the wide joint fitting 10B has higher strength than the third test body 300 and the fourth test body 400 in which the wooden panel 6 is joined in a checkered shape. There is. Therefore, by adopting the joint structure according to the present invention, sufficient strength can be obtained as the wall 5 even if the size of the small hole 10d and the size of the wooden panel 6 have a degree of freedom.

<About modification>
In each of the above-described embodiments, the positions of the first plate-shaped portion 10a and the second plate-shaped portion 10b are shifted in the left-right direction with respect to the joining fitting 10 (narrow-width joining fitting 10A and wide-width joining fitting 10B) with the connecting portion 10c interposed therebetween. However, it is not limited to this configuration.
For example, as in the joint metal fitting 10C of the first modification shown in FIG. 18, each joint metal fitting 10 may be made of a rectangular or square steel plate having a plurality of small holes 10d formed therein, or the joint metal fitting 10 shown in FIG. 19 may be formed. 2 Like the joint fitting 10D of the modified example, each joining fitting 10D may be made of a hexagonal steel plate.

Like the joint fitting 10E of the third modified example shown in FIG. 20, a substantially square horizontal plate portion formed in a direction orthogonal to the axis center at an intermediate position between the cylindrical portion 10e along the vertical direction and the cylindrical portion 10e. The configuration may include 10f, a vertical plate portion 10g provided on the side surface of the cylindrical portion 10e along the axial direction, and an oval opening 10h provided in the vertical plate portion 10g. As shown in FIG. 21, the joint fitting 10E is also arranged at the joint between the corner of one wooden panel 6 (upper left panel 61 to lower right panel 67) and the other corner of the wooden panel 6. Will be done. In the joint fitting 10, a through bolt 25 arranged between the CLT floor 4 and the base 3 is inserted into the cylindrical portion.
Like the joint fitting 10F of the fourth modified example shown in FIG. 22, two vertical plate portions 10i made of vertically long rectangular steel plates and arranged in parallel with each other and the vertical plate portion 10i are located between the vertical plate portions 10i in the longitudinal direction. , A rectangular horizontal plate portion 10j arranged in a direction orthogonal to the vertical plate portion 10i, an oval opening 10k provided in the vertical plate portion 10i, and an opening provided in the center of the horizontal plate portion 10j. It may be configured to have 10 m and the like. The joint fitting 10F is also arranged at the joint between the corner of one wooden panel 6 and the corner of the other wooden panel 6, and the through bolt 25 (see FIG. 21) is formed in the opening 10 m of the horizontal plate portion 10j. ) Is inserted.

Regarding the wooden panel 6, in the above-described embodiment, a CLT processed into a rectangular shape is illustrated, but the present invention is not limited to this configuration. For example, as shown in the wooden panel 6'shown in FIG. 23 (a), the four corners may be projected outward in a pointed shape. As shown in FIG. 23B, by using this wooden panel 6, the opening can be made into an octagonal shape, and the design of the wall 5 can be enhanced.
Regarding the wooden panel 6, structural wood other than CLT may be used.
Further, the pin 13 used for joining the wooden panel 6 may have a shape other than the cylindrical shape. For example, it may have a triangular prism shape, a quadrangular prism shape, or a hexagonal prism shape.

[Summary of Examples of Embodiments of the Present Invention, Actions, and Effects]
<First embodiment>
The joint structure between the wooden panels 6 according to this aspect is for the first wooden panel 6A having two left and right corners on the upper side or the lower side and one side of the left corner of the first wooden panel 6A. The upper left or lower left with respect to one side of the right corner of the first wooden panel 6A and the second wooden panel 6B arranged with one side of the upper right or lower right corner facing each other. Between the third wooden panel 6C arranged laterally of the second wooden panel 6B and the second wooden panel 6B and the third wooden panel 6C with one side of the corner facing each other. In the space (opening SP) formed in, one side of the left corner of the first wooden panel 6A, and one side of the right corner of the second wooden panel 6B arranged to face the left corner. The first metal fitting 10L (joining metal fitting 10) that is pinned and fixed straddling, one side of the right corner of the first panel, and the third wooden panel 6C that is arranged to face the right corner. It is characterized in that it is provided with a second metal fitting 10R (joining metal fitting 10) that is pinned and fixed straddling one side of the left corner portion of the above.

According to the joining structure according to this aspect, even if the corner portions of the wooden panels 6 are joined to each other to improve the aesthetic appearance, the required joining strength can be obtained by each joining metal fitting 10. Further, since each joint fitting 10 is pinned and fixed, even if an excessively large external force is applied to the joint portion, the pin 13 is bent before the corner portion of each wooden panel 6 is damaged. , It is possible to prevent damage to the corners. Further, the joining strength can be adjusted for each corner by combining the joining metal fitting 10 and the pin 13. As a result, by arranging a plurality of wooden panels 6 in a checkered pattern and combining the corners with the joining metal fittings 10, it is possible to form a wall 5 having seismic resistance while having daylighting and aesthetics.

<Second embodiment>
The joint structure between the wooden panels 6 according to this aspect is characterized in that the first wooden panel 6A, the second wooden panel 6B, and the third wooden panel 6C are made of CLT.
According to the joint structure according to this aspect, a wall 5 having high strength can be constructed.

<Third embodiment>
The joint structure between the wooden panels 6 according to this embodiment is formed by a metal plate (steel plate) in which the first metal fitting 10L and the second metal fitting 10R form a plurality of small holes 10d through which a metal pin 13 is inserted. Each wooden panel 6 has a groove portion 6b formed on its side end surface and into which a part of a metal plate (first plate-shaped portion 10a, second plate-shaped portion 10b) is inserted, and the thickness of each wooden panel 6. It is characterized by having a pin insertion hole 6c penetrating the direction.
According to the joining structure according to this aspect, the strength of the joining portion can be easily adjusted by the thickness of the metal fitting and the thickness of the pin 13.

<Fourth Embodiment>
In the joint structure between the wooden panels 6 according to this aspect, the first metal fitting 10L and the second metal fitting 10R are inserted into the groove portion 6b provided in the first wooden panel 6A, and the first plate-shaped portion 10a. It is located between the second plate-shaped portion 10b inserted into the groove portion 6b provided in the second wooden panel 6B or the third wooden panel 6C, and the first plate-shaped portion 10a and the second plate-shaped portion 10b. It is characterized by including a connecting portion 10c for connecting the first plate-shaped portion 10a and the second plate-shaped portion 10b by shifting their positions in the left-right direction.
According to the joint structure according to this aspect, the strength of the joint portion can be easily adjusted according to the amount of deviation of the first plate-shaped portion 10a and the second plate-shaped portion 10b in the left-right direction.

<Fifth embodiment>
The wall 5 (wooden panel shear wall) of the building 1 according to this aspect is characterized by having a joint structure between the wooden panels 6 according to any one of claims 1 to 4.
According to the wall 5 according to this aspect, the daylighting property and the aesthetic appearance can be improved by the plurality of wooden panels 6.

1 ... Building, 5 ... Wall, 6 ... Wooden panel, 6a ... Fixing means, 6b ... Groove, 6c ... Pin insertion hole, 10 ... Joining bracket, 10a ... First plate-shaped part, 10b ... Second plate-shaped part, 10c ... Connecting part, 10d ... Small hole, 13 ... Pin (drift pin)

The main feature of the present invention is a seismic wall in which wooden panels such as CLT are arranged in multiple stages between the floors or horizontal members on the upper and lower floors, and the arrangement configuration is such that there is a gap between adjacent wooden panels in the horizontal direction. Along with the provision, the vertical wooden panels are alternately constructed by overlapping the corners with the wooden panels and combining them with the metal joints.
Specifically, the joint structure between the wooden panels according to the present invention includes a square first wooden panel having two left and right corners on the upper side and the lower side, and the left corner portion of the first wooden panel. against one side, the upper right, or one side of the corner of the lower right and the second wooden panel square shape which are arranged while being opposed to one side of the right corner angle portions of the first wood panel On the other hand, a square third wooden panel arranged at a lateral position of the second wooden panel and the second wooden panel with one side of the upper left or lower left corner adjacent to each other. The space formed between the wooden panel and the third wooden panel, one side of the left corner portion of the first wooden panel, and the right corner corner of the second wooden panel arranged adjacent to the left corner portion. A plate-shaped first metal fitting that is pinned and fixed across one side of the portion, one side of the right corner portion of the first panel, and a third plate that is arranged adjacent to the right corner portion. A plate-shaped second metal fitting that is pinned and fixed straddling one side of the left corner of the wooden panel is provided, and each wooden panel is formed on its side end surface and is of the first metal fitting. It is characterized by including a groove into which a part or a part of the second metal fitting is inserted, and a pin insertion hole through which each of the wooden panels is inserted in the thickness direction and into which a metal pin is inserted. ..

According to the present invention, a plurality of wooden panels are arbitrarily arranged in a checkered shape or the like and combined with a metal joint to have aesthetics and daylighting, and a joint structure between wooden panels having earthquake resistance, and wooden. Panel seismic walls can be constructed. Further, according to the present invention, the strength of the joint can be easily adjusted by adjusting the thickness of each metal fitting and the thickness of the metal pin.

The main feature of the present invention is a seismic wall in which wooden panels such as CLT are arranged in multiple stages between the floors or horizontal members on the upper and lower floors, and the arrangement configuration is such that there is a gap between adjacent wooden panels in the horizontal direction. Along with the provision, the vertical wooden panels are alternately constructed by overlapping the corners with the wooden panels and combining them with the metal joints.
Specifically, the present invention comprises a rectangular structural wooden panel and a plate-shaped joining metal fitting used for joining the pair of structural wooden panels to each other, and bears the load applied to the building. A seismic wall, the structural wooden panel includes a first structural wooden panel, a second structural wooden panel, and a third structural wooden panel, and the joint fitting is a first joint fitting. The first wooden panel has two left and right corners on the upper side and the lower side, and the second structural wooden panel includes the first structural wooden panel. The third structural wooden panel is arranged in a state where one side of the upper right or lower right corner is in contact with one side of the left corner portion of the above, and the third structural wooden panel is to the right of the first structural wooden panel. against one side of the corner, the upper left, or lower left of laterally disposed positions of the front Stories second structural wood panel one side of the corner portion being in contact with the second structural wooden panel a space is formed between said first metal joint, the first and one side of the left corner angle portion of the structural wood panel, said second structural wooden panel disposed left corner is of the right corner angle portions pin straddling the side fastened to, the second bonding metal has a side of the right corner angle portions of the first structural wooden panel, said right corner wherein is arranged parts being a third of the pinned straddling the side of the left corner angle portion fixing of the structural wood panel, said first structural wooden panel, said second structural wooden panel, The third structural wooden panel has a groove formed on its side end surface into which a part of the first joint fitting or a part of the second joint fitting is inserted, and each structural wooden panel . A pin insertion hole that penetrates in the thickness direction and into which a metal pin is inserted is provided, and the first joint fitting and the second joint fitting are provided by the first structural wooden panel. A first plate-shaped portion to be inserted into the groove, a second plate-shaped portion to be inserted into the groove provided by the second structural wooden panel or the third structural wooden panel, and the first plate. It is characterized by having a connecting portion located between the shaped portion and the second plate-shaped portion and connecting the first plate-shaped portion and the second plate-shaped portion with a laterally displaced position. And.

According to the present invention, a plurality of structural wooden panels are arbitrarily arranged in a checkered shape or the like, and combined with a metal joint to form a wooden panel shear wall having seismic resistance while having aesthetics and daylighting. be able to. Further, according to the present invention, the strength of the joint is determined according to the amount of lateral displacement between the first plate-shaped portion and the second plate-shaped portion, and the thickness of each metal fitting and the thickness of the metal pin. Easy to adjust.

Claims (5)

A first wooden panel with two left and right corners on the top or bottom,
A second wooden panel arranged with one side of the upper right corner or the lower right corner facing the left corner of the first wooden panel.
A third arranged at a lateral position of the second wooden panel with one side of the upper left or lower left corner adjacent to one side of the right corner of the first wooden panel. Wooden panels and
A space formed between the second wooden panel and the third wooden panel,
A first pinned and fixed straddling one side of the left corner portion of the first wooden panel and one side of the right corner portion of the second wooden panel arranged adjacent to the left corner portion. With metal fittings
A second metal fitting that is pinned and fixed straddling one side of the right corner portion of the first panel and one side of the left corner portion of the third wooden panel arranged adjacent to the right corner portion. When,
The joint structure between wooden panels is characterized by being equipped with. The wooden according to claim 1, wherein the first wooden panel, the second wooden panel, and the third wooden panel are made of CLT (Cross Laminated Timber). Joining structure between panels. The first metal fitting and the second metal fitting are composed of a metal plate having a plurality of openings through which a metal pin is inserted.
Each wooden panel is characterized by having a groove formed on its side end surface into which a part of the metal plate is inserted, and a pin insertion hole penetrating the thickness direction of each wooden panel. The joint structure between wooden panels according to claim 1 or 2. The first metal fitting and the second metal fitting are
A first plate-shaped portion to be inserted into the groove provided by the first wooden panel,
A second plate-shaped portion inserted into the groove provided by the second wooden panel or the third wooden panel, and
A connecting portion located between the first plate-shaped portion and the second plate-shaped portion, and connecting the first plate-shaped portion and the second plate-shaped portion by shifting their positions in the left-right direction.
3. The joint structure between wooden panels according to claim 3. A wooden panel shear wall comprising the joint structure between the wooden panels according to any one of claims 1 to 4.

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