JP3394501B2 - Junction structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column member formed by bonding and laminating a plurality of flat plates and a horizontal member. Further, the present invention relates to a joint structure in which a reinforcing material is installed on each side surface of the horizontal member and the both members are fixed. 2. Description of the Related Art Since wood contains a large amount of water when it is cut down, it tends to shrink in the width direction when it is gradually dried. Therefore, as shown in FIG. 3 (A), in the pillar material 14 made of a support material, an incision 14a extending in the axial direction called “back split” is provided for the purpose of preventing cracking due to drying. By the way, in the conventional frame construction method which is the mainstream of Japan's wooden construction method, for example, as shown in FIG. 3C, a pillar 14 is mounted on a base 12 provided on a concrete cloth foundation 10. The frame is composed of beams and girders. Therefore, in joining the pillar 14 having the back split 14a and the base 12, in addition to joining the combination of a concave portion and a convex portion called a joint, the two are fastened by a chevron 22 as shown in FIG. A joining structure is adopted. That is, when a horizontal force is applied to the wooden building due to an earthquake or wind, a force in the direction of being pulled out from the base 12 (hereinafter referred to as “pull-out force”) is applied to the pillar 14.
For the purpose of obtaining strength that can resist such pull-out force, a joining structure in which both the base 12 and the pillar 14 are joined together by a joint metal such as a metal piece or a piece of metal without relying solely on the joint is generally used. It is taken. And back split 1
As one of such joint hardware, a pillar-shaped metal object 22 made of a V-shape that can compensate for the tight connection with the base 12 while avoiding the spine 14a is used for the pillar 14 with 4a. However, in recent years, structural laminates formed by bonding and laminating a plurality of flat plates in accordance with the difficulty of obtaining wood from real materials and the advancement of building material processing technology. Has been developed and commercialized, and its use has become universal. For this reason, as shown in FIG. 4, instead of the conventional pillar material 14 made of a support material, a pillar material 16 (hereinafter referred to as “gathered pillar material”) 16 made of structural laminated material is frequently used. As the joint hardware that compensates for this tightness, a palm hardware 24 is used because of the cost of building materials. However, it has been found that there is the following problem when the tightness between the assembled column member 16 and the base 12 is reinforced by the metal piece 24. (1) As shown in FIG. 4 (A), the side surface of the assembled column member 16 corresponding to the square of the real material (hereinafter referred to as the “corresponding surface”).
According to the joining structure in which the metal hardware 24 is nailed to the base 16a to reinforce the tightness with the base 12, the palm is placed on the virtual straight lines K and L extending perpendicularly to the stacking direction of the assembled columnar members 16 on the mesh equivalent surface 16a. A plurality of nails 28 for nailing the hardware 24 are arranged side by side. Therefore, when a horizontal force is applied to the laminated column member 16 due to an earthquake or wind, as shown in FIG. , Cleavages adjacent in the Z-axis direction (for example, cleavage α81 and cleavage β81) communicate with each other. As a result, it has been found from the experimental results by the inventors of the present application that there is a possibility that the bonding strength by the metal braid 24 may rapidly decrease due to the progress of the cleavage in the Z-axis direction. (2) Also, as shown in FIG. 5A, a metal piece 24 is nailed to the side surface 18a (hereinafter referred to as the "plate equivalent surface") 18a of the laminated column member 16 corresponding to the true material plate. Thus, even with the joint structure that reinforces the tight connection with the base 12, as with the laminated column member 16, it opens on the virtual straight lines K and L that extend perpendicular to the stacking direction of the laminated column member 18 on the plate equivalent surface 18 a. Hardware 2
A plurality of nails 28 for nailing 4 are arranged side by side. Therefore, when a horizontal force is applied to the laminated column member 18, as shown in FIG. 5 (B), the cleavage α91, α92, β starting from these nails 28 is used.
91 and β92 are generated at the laminated interface. Since this cleavage stops at the lamination interface, it does not progress in the Y-axis direction beyond the driving depth of the nail 28, but adjacent cleavages (for example, cleavage α91 and cleavage β91) communicate with each other in the Z-axis direction. . For this reason, as in the case of the laminated column 16 shown in FIG.
It has been found from the experimental results by the inventor of the present application that there is a possibility that the joining strength by the metal braid 24 may rapidly decrease due to the progress of the cleavage in the axial direction. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a joint structure capable of ensuring joint strength against a horizontal force. In order to achieve the above object, in the joined structure of claim 1, a pillar material formed by bonding and laminating a plurality of flat plates and a horizontal member are joined. And a joint structure in which a reinforcing material is installed on the side surface of the column member and the side surface of the horizontal member and both are fixed,
The reinforcing member has a V-shaped closing side on the horizontal member side and a V-shaped side.
Opening side is technically characterized by being fixed by arrangement <br/> place the plurality of nails in a V-shape located at the pillar side. The square equivalent surface of the column material corresponds to the square of the real material.
This refers to the side of the pillar material. In the invention of claim 1, the reinforcing member is a V-shaped closure.
Since the same side is fixed by arranging a plurality of nails in a V shape with the horizontal member side and the V-shaped opening side positioned on the column member side, it extends perpendicular to the stacking direction of the column members. Do not place two or more nails on any virtual straight line. As a result, even if a horizontal force or the like is applied to the column material, and the cracks originating from these nails occur in the column material, the cleavage by other nails is not located in a direction perpendicular to the stacking direction of the column materials. From
Communication between cleavages can be prevented. DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the joint structure of the present invention will be described below with reference to the drawings. An example in which the joining structure according to an embodiment of the present invention is applied to a column of a conventional frame construction method will be described with reference to FIGS. 1 and 2. As shown in FIG. 1 (A), in a conventional frame construction method, a base 12 as a horizontal member is provided on a concrete cloth foundation 10, for example, and a laminated column member 16 is provided on the base 12. Is built. And in addition to a joint, the angle | corner metal object 22 constructed and nailed to both sides is used for joining the base 12 and the laminated pillar material 16. That is, the laminated pillar material 16
The square equivalent surface 16a is used as a mounting surface for the angle-shaped hardware 22, and the side surface 12a of the base 12 and the square equivalent surface 16a of the laminated column member 16 are used.
Yamagata hardware 22 is provided over the two. In addition,
The Yamagata hardware 22 conforms to the standards of the Japan Housing and Wood Technology Center, for example, “V
The symbol “P” is given. The angle-shaped metal piece 22 is formed in a V shape as described above, and the nail hole 2 for guiding the driving position of the nail 28 is formed.
Since 2a is arranged in a V shape (see FIG. 3B), a plurality of nails 28 can be arranged in a V shape.
In other words, according to the angle-shaped hardware 22, two or more nails 28 are not arranged on any virtual straight lines K, L, M, and N extending perpendicularly to the stacking direction of the laminated column members 16. As a result, FIG.
As shown in (B), when a horizontal force or the like is applied to the laminated column 16, the cracks α11, α12, β starting from these nails 28 are used.
11. Even if β12 is generated in the laminated pillar material 16, the laminated pillar material 1
Since no cleavage by another nail 28 (for example, cleavage β11 with respect to the cleavage α11) is not positioned in the direction perpendicular to the stacking direction 6 (Z-axis direction), communication between the cleavages can be prevented. Therefore, even if such a horizontal force or the like is applied to the laminated column 16, the direction perpendicular to the stacking direction of the laminated column 16 (Z
The progress due to the communication of the cleavage in the axial direction can be suppressed.
That is, there is an effect that the bonding strength can be ensured even for the horizontal force. Next, the angle-corresponding surface 18a of the laminated columnar material 18 is used as the mounting surface of the angle-shaped metal piece 22, and the angle-shaped metallurgy 22 is constructed on the side surface 12a of the base 12 and the plate-like equivalent surface 16a of the assembled columnar material 18. An embodiment will be described with reference to FIG. As shown in FIG. 2, as in the above-described embodiment (FIG. 1), in this embodiment as well, the chevron 22 is an arbitrary virtual straight line K, L, M, extending perpendicularly to the stacking direction of the laminated column members 16. N or more nails 28 are not arranged on N. This
These nails 2 can be obtained by applying horizontal force to the laminated column 18.
Even if the cleavage α21, α22, β21, β22 starting from 8 occurs in the laminated column member 18, these cleavages α21, α22, β2
1, β22 stops at the laminated interface of the laminated columnar material 18 and therefore does not progress in the Y-axis direction beyond the driving depth of the nail 28. In addition, since there is no cleavage by another nail 28 (for example, cleavage β21 with respect to the cleavage α21) in the direction (Z-axis direction) perpendicular to the stacking direction of the laminated columnar members 18, communication between the cleavages in the Z-axis direction is prevented. can do. Therefore, even if such a horizontal force or the like is applied to the assembled column material 18, the assembled column material 1
The progress due to the communication of the cleavage in the direction (Z-axis direction) perpendicular to the stacking direction of 8 can be suppressed. That is, there is an effect that the bonding strength against the horizontal force can be ensured more reliably. In each of the above-described embodiments, the angle-shaped metal piece 22 has been described as an example of the reinforcing material. However, the present invention is not limited to this, and “a plurality of nails to which the reinforcing material is nailed are provided. The nail may be arranged in a W shape or a zigzag shape as long as it is “one that is arranged on an arbitrary virtual straight line extending perpendicular to the material stacking direction”. According to the first aspect of the present invention, the reinforcing material is V-shaped.
The closing side is on the horizontal member side and the V-shaped opening side is on the column member side
Since a plurality of nails are fixed in a V shape by arranging them in a V shape, two or more nails are not placed on any virtual straight line extending perpendicular to the stacking direction of the column members. As a result, even if a horizontal force or the like is applied to the column material, and the cracks originating from these nails occur in the column material, the cleavage by other nails is not located in a direction perpendicular to the stacking direction of the column materials. From
Communication between cleavages can be prevented. Therefore,
Even if such horizontal force is applied to the pillar material, it is possible to suppress the progress due to the contact of the crack in the direction perpendicular to the stacking direction of the pillar material. There is an effect to get.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (A) is a schematic explanatory view showing a joining structure according to an embodiment of the present invention, and FIG. 1 (B) is an enlarged view of the joining portion of FIG. 1 (A). FIG. FIG. 2 is a schematic explanatory view showing a joint structure according to another embodiment of the present invention. FIG. 3 (A) is an explanatory view showing the back splitting of the pillar material by the support material, FIG. 3 (B) is an explanatory view showing the angle hardware, and FIG. 3 (C) is a foundation and the pillar material (support It is typical explanatory drawing which shows an example of the joining structure of material. FIG. 4 (A) is a schematic explanatory view showing an example of a joint structure between a base and a pillar material (glued material) when a metal piece is arranged on the surface corresponding to the grid of the pillar material, FIG. ) Is a schematic explanatory view showing a state in which the pillar material is cleaved by a metal piece. FIG. 5 (A) is a schematic explanatory view showing an example of a joining structure of a base and a pillar material (glued material) when a metal piece is arranged on the surface corresponding to the grain of the pillar material, FIG. B) is a schematic explanatory view showing a state in which the pillar material is cleaved by the metal braid. [Explanation of symbols] 12 Base (horizontal material) 12a Side face 16, 18 Glued pillar material (pillar) 16a, 18b Cross-corresponding face (side face) 16b, 18a Plane equivalent face (side face) 22 Angle metal (reinforcing material) 22a Nail hole 28 Nail K, L, M, N Virtual straight line

Claims (1)

(57) [Claims] [Claim 1] A column member formed by bonding and laminating a plurality of flat plates and a horizontal member are joined to each other.
It is a joint structure in which a reinforcing material is installed on the grid equivalent surface and the side surface of the horizontal member , and both are fixed. The reinforcing material has a V-shaped closed side on the horizontal member side and a V-shaped side.
Joint structure side open is characterized by comprising fixed by arrangement <br/> place the plurality of nails in a V-shape located at the pillar side.