JP2021110155A - Reinforcing structure for column-beam joint part - Google Patents

Abstract

To provide a reinforcing structure of a column-beam joint part capable of effectively enhancing the strength of the column-beam joint part for joining a column and a beam made of woody material.SOLUTION: A first reinforcing member 22 in which a first column-side plate member 22p sandwiched between wooden shaft members 21a and 24a and arranged so that the thickness direction thereof is in the longitudinal direction perpendicular to the vertical direction of a column 2 and the lateral direction of a first beam 3, and a first beam side plate member 22q that projects from the side surface of the first beam 3 side of the first column-side plate member 22p in the direction of the first beam 3 and extends from an upper column-beam joint part 1A to the inside of the first beam 3 are integrally formed, is placed in the column-beam joint part 1 (1A) connecting the column 2, the first beam 3 and a second beam 4 made of a plurality of wood materials, and one or both of the column side plate member 22p and the beam side plate member 22q is/are extended from the column-beam joint part 1A to the column-beam joint part adjacent to the column-beam joint part 1A.SELECTED DRAWING: Figure 1

Description

The present invention relates to a reinforcing structure of a column-beam joint portion for joining a column made of wood and a beam.

Conventionally, a technique has been disclosed in which a plurality of wood-based shaft members such as laminated lumber are combined in a fitted state from above and below and connected with an adhesive to form a pillar of a building (see, for example, Patent Document 1).
However, since the strength of the support column combined with the wood-based shaft material is not sufficient, the wood-based shaft material is divided into two instead of the conventional wood-based shaft material, and H steel, steel bar lattice, etc. are used between them. A technique for ensuring the strength of columns by using a reinforcing wood-based structural material fixed by sandwiching a reinforcing material has been proposed (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2006-194028 Japanese Unexamined Patent Publication No. 2018-112012

However, even if the reinforcing wood-based structural material described in Patent Document 2 is used as a member constituting the column made of laminated wood, the individual strength of the column or beam can be increased, but the column-beam joint is not provided. , Its strength was not always sufficient.

The present invention has been made in view of the conventional problems, and provides a reinforcing structure of a beam-column joint that can effectively increase the strength of a beam-column joint that joins a column made of wood and a beam. The purpose is to do.

The present invention is a reinforcing structure of a beam-column joint which is a joint between a column and a beam, and the column and the beam are a reinforcing member sandwiched between a plurality of wood materials and the wood material. The reinforcing member is arranged so that the thickness direction is perpendicular to the length direction of the column and the length direction of the beam, and the reinforcing member is arranged at the beam-column joint of the column. A side plate material and a beam side plate material that protrudes in the beam direction from the side surface of the pillar side plate material on the beam side and extends to the inside of the beam, and either one of the pillar side plate material and the beam side plate material or Both are characterized in that they extend from the beam-column joint to the other joint, which is the beam-column joint adjacent to the beam-beam joint.
As a result, the strength of the column-beam joint can be effectively increased, and at the same time, the strength of the column or beam that needs to be reinforced, or both the column and the beam can be increased at the same time.
Further, either or both of the column side plate material and the beam side plate material extended to the other joint portion are extended to the inside of the column of the other joint portion, or are connected to the reinforcing member arranged at the other joint portion. Therefore, on the other hand, the strength of the joint can also be increased.

Further, in the present invention, when the reinforcing member is a first reinforcing member and a beam extending in a direction perpendicular to the plate surface of the first reinforcing member is a second beam, the second beam is plural. It is made of wood and is arranged at the beam-column joint so that the thickness direction is perpendicular to the length direction of the second beam and the length direction of the column. A second beam-side plate member arranged at the beam-column joint, and a side surface of the second column-side plate member on the second beam side projecting toward the second beam and inside the second beam. A second reinforcing member including a second beam-side plate extending to the above is arranged, and either or both of the second column-side plate and the second beam-side plate are the columns and beams. It is characterized in that it extends from the joint to the other joint, which is a beam-beam joint adjacent to the beam-beam joint.
As a result, the strength of the second beam can be surely increased, so that the strength of the column-beam joint can be further increased. The extension direction of the second beam is perpendicular to the extension direction of the first beam when the beam including the beam side plate member of the first reinforcing member is used as the first beam.
Further, either or both of the second column side plate material and the second beam side plate material extended to the other joint portion is extended to the inside of the column of the other joint portion, or is arranged at the other joint portion. Since it is connected to the second reinforcing member, the strength of the other joint can be further increased.
Further, when viewed in the cross section of the beam-column joint, the first reinforcing member and the second reinforcing member are arranged in a grid shape, so that the beam-column joint can be uniformly and with high strength. I was able to reinforce it.
Further, if a laminated lumber in which a plurality of shaft materials or plate materials are laminated and bonded is used as the wood material, the felled wood can be effectively used, which can contribute to the effective use of resources.

The outline of the present invention does not list all the necessary features of the present invention, and a subcombination of these feature groups can also be an invention.

It is a figure which shows the reinforcement structure of the column-beam joint part which concerns on this embodiment. It is a figure which shows the joining method of the plate material which comprises a reinforcing member. It is a figure which shows the joining method of a column and a beam. It is a figure which shows another example of the reinforcement structure of a beam-column joint. It is a figure which shows the other arrangement example of the wood shaft material which constitutes a pillar.

1 (a) and 1 (b) are views showing a beam-column joint 1 (1A, 1B) according to the present embodiment, and FIG. 1 (a) is a cross-sectional view of the beam-column joint 1 and (b). Is a vertical sectional view.
When the upper beam-column joint 1A and the lower beam-column joint 1B are not distinguished, the upper beam-column joint 1A and the lower beam-column joint 1B are combined with the beam-column joint 1B. That is.
In each figure, 2 is a pillar having a rectangular cross section, and 3 and 3 are joined to one side surface of the pillar 2 and a side surface facing the one side surface, and extend in a direction perpendicular to the one side surface. The first beams 4 and 4 are joined to the other side surface of the column 2, which is a side surface perpendicular to the one side surface, and the side surface facing the other side surface, respectively, and are perpendicular to the other side surface. It is a second beam that extends in the direction.
Hereinafter, assuming that the extension direction of the pillar 2 is the vertical direction, the extension direction of the first beam 3 is the horizontal direction, and the extension direction of the second beam 4 is the front-rear direction, in the figure (a), the right side is the right direction and the left side is the left side. The left side, the lower side is the front direction, and the upper side is the rear direction. Further, in the figure (b), the upper side is upward, the lower side is downward, the right side is right, and the left side is left.
In this example, the width dimension of the first beam 3 and the second beam 4 is made smaller than the width dimension of the column 2, but the width dimension of the first beam 3 and the second beam 4 is the width dimension of the column 2. May be the same as.
The pillar 2 includes a central wooden portion 21, a first reinforcing member 22 and a second reinforcing member 23 made of steel plates, and an outer wooden portion 24.
The central wood part 21 is formed by adhering a plurality of wood shaft members 21a having a rectangular cross section extending from at least the upper beam-column joint 1A to the lower beam-column joint 1B, and is arranged at the center of the pillar 2. Will be done. The wood shaft member 21a does not necessarily have to be a single shaft member extending from the upper beam-column joint 1A to the lower beam-column joint 1B, and as shown in FIG. The wood shaft member 21a may be joined in the vertical direction by adhesion or the like. At this time, as shown in the figure, it is preferable to join the plurality of wood shaft members 21a to be joined in the vertical direction by shifting them in the vertical direction, because the strength of the central wood portion 21 is improved.
In this example, the wood shaft material 21a, the wood shaft material 24a, the wood board 31a, and the wood board 41a, which will be described later, are made of well-known structural laminated wood.

As shown in FIGS. 1 (a) and 1 (b) and 2 (a) to 2 (c), the thickness direction of the first reinforcing member 22 is the vertical direction and the first in the length direction of the column 2. The first beam is arranged so as to be in the front-rear direction, which is the direction perpendicular to the left-right direction, which is the length direction of the beam 3, and extends from the upper beam-column joint 1A to the lower beam-column joint 1B. The first beam side plate 22p and the first column side plate 22p project from the upper side surface in the direction of the first beam 3 and extend from the upper beam-column joint 1A to the inside of the first beam 3. The beam side plate material 22q is integrally formed, and the shape when viewed from the front-rear direction is a T-shaped plate material.
Further, the thickness direction of the second reinforcing member 23 is the left-right direction, which is the direction perpendicular to the vertical direction, which is the length direction of the pillar 2, and the front-rear direction, which is the length direction of the second beam 4. The second column-side plate member 23p and the second column-side plate member 23p extending from the upper beam-side plate member 1A to the lower beam-column joint portion 1B. The shape when viewed from the left and right is T, which is integrally formed with the second beam side plate member 23q that protrudes in the beam 4 direction and extends from the upper beam-column joint 1A to the inside of the second beam 4. It is a character-shaped plate material.
In this example, as shown in FIGS. 1B and 2A, the first column-side plate member 22p and the second column-side plate member 23p are connected to the lower beam-column joint 1B, respectively. It extends to the lower end of the beam and is connected to the lower first beam side plate 22q'and the lower second beam side plate 23q'arranged in the lower beam-column joint 1B. As a result, both the upper beam-column joint 1A and the lower beam-column joint 1B can be enhanced.
The portion inside the lower beam-column joint 1B of the first column-side plate 22p and the portion inside the lower beam-column joint 1B of the second column-side plate 23p are respectively. It can also be regarded as the lower first column side plate material 22p'provided in the lower beam-column joint 1B and the lower second column side plate material 22p'. That is, the first pillar-side plate material 22p and the second pillar-side plate material 23p are lower sides composed of the lower first pillar-side plate material 22p'and the lower first beam-side plate material 22q', respectively. It is connected to the lower second reinforcing member 23'consisting of the first reinforcing member 22', the lower second column side plate member 23p', and the lower second beam side plate member 23q'. It can be said that there is.
Further, the first pillar-side plate member 22p and the second pillar-side plate member 23p are respectively extended to the lower end of the lower beam-column joint 1B, and the lower beam-column joint 1B is formed. The first inverted T-shaped reinforcing member, which is an inverted T-shaped plate when viewed from the front-rear direction, and the first inverted T-shaped reinforcing member, which is an inverted T-shaped plate when viewed from the left and right. The first pillar-side plate member 22p of the first reinforcing member 22, the member corresponding to the first pillar-side plate member 22p of the first inverted T-shaped reinforcing member, and the second reinforcing member 23. A configuration in which the second column side plate member 23p and the member corresponding to the second column side plate member 23p of the second inverted T-shaped reinforcing member are connected at an intermediate position between the upper and lower beam-column joints 1A and 1B. May be.

Further, in this example, as shown in FIG. 2B, fitting groove portions 22s and 23s are formed on the upper side of the first beam side plate member 22q and on the lower side of the second beam side plate member 23q, respectively. By fitting and welding the lower side of the second beam side plate member 23q and the upper side of the first beam side plate member 22q to these fitting groove portions 22s and 23s, the first reinforcing member 22 and the first reinforcing member 22 It is joined to the second reinforcing member 23. That is, as shown in FIG. 1A, the first reinforcing member 22 and the second reinforcing member 23 are viewed from the vertical direction (when viewed in the cross section of the upper beam-column joint 1A). ) Is joined in a girder shape.
As shown by the alternate long and short dash line in FIG. 2B, the first and second column side plate members 22p. The upper end portion of 23p may be extended to the upper side of the upper beam-column joint portion 1A. In this case, the shape of the first reinforcing member 22 when viewed from the front-rear direction and the shape of the second reinforcing member 23 when viewed from the left-right direction are both cross-shaped.
Further, as shown in FIG. 2C, a hole 22k is formed in the first column side plate member 22p, and the beam side corresponding to the second beam side plate member 23q of the second reinforcing member 23 is formed in the hole 22k. After inserting the plate member 23r, the first column side plate member 22p and the beam side plate member 23r may be joined by welding. In this case, the column side plate material corresponding to the second column side plate material 23p may be omitted, or may be retrofitted by welding.
The first column side plate 22p and the second column side plate 23p are also necessarily extended from the upper beam joint 1A to the lower beam joint 1B, as in the case of the wood shaft 21a. It does not have to be a single plate material, and a plurality of plate materials may be joined in the vertical direction by fitting or welding.

In this example, as shown in FIG. 1A, when viewed from the vertical direction of the pillar 2, the first reinforcing member 22 and the second reinforcing member 23 are formed into a girder shape with the central wood portion 21 as the core material. In addition to being arranged, an outer wood portion 24 formed by adhering a plurality of wood shaft members 24a extending from at least the upper beam-column joint 1A to the lower beam-column joint 1B is arranged outside the well girder. .. The cross-sectional shape of the wood shaft member 24a is also rectangular.
Like the wood shaft material 21a, the wood shaft material 24a does not necessarily have to be a single shaft material extending from the upper beam-column joint 1A to the lower beam-column joint 1B, and FIG. 1 (b). As shown in the above, a plurality of wood shaft members 24a may be joined in the vertical direction by adhesion or the like.

As described above, the pillar 2 includes the central xylem 21, the first reinforcing member 22 and the second reinforcing member 23 which are arranged in a grid shape surrounding the central xylem 21 and adhered to the central xylem 21. It is composed of a reinforcing member 22 of 1 and an outer wooden portion 24 bonded to the outside of the second reinforcing member 23.
FIG. 3A is a diagram showing a state before joining the column 2 and the beams 3 and 4, and as shown in the figure, the first beam side plate member 22q of the first reinforcing member 22 is a first beam side plate member 22q. The second beam side plate member 23q of the second reinforcing member 23 is extended so as to project in the length direction of the second beam 4.
On the other hand, the first beam 3 is a first beam plate member 31 composed of a plurality of wooden plate members 31a arranged so that the thickness direction is the front-rear direction which is the length direction of the second beam 4, and the first beam 3. The second beam 4 is provided with a gap portion 32 for inserting and adhering an extension portion of the first beam side plate member 22q of the reinforcing member 22 of the above, and the thickness direction of the second beam 4 is the length direction of the first beam 3. For inserting and adhering the extension portion of the second beam side plate 23p of the second reinforcing member 23 and the second beam plate 41 made of a plurality of wood plate 41a arranged so as to be in the left-right direction. A gap portion 42 is provided.
Therefore, when joining the column 2, the first beam 3, and the second beam 4, as shown in FIG. 3A, the first beam side plate 22q is adhered and fixed to the gap 32. Then, the second beam side plate member 23q may be adhered and fixed to the gap portion 42. As a result, as shown in FIG. 3B, the first beam 3 is composed of the first beam plate member 31 and the extension portion of the first beam side plate member 22q of the first reinforcing member 22, and the first beam 3 is formed. The beam 4 of 2 can be composed of a second beam plate member 41 and an extension portion of the first beam side plate member 23p of the second reinforcing member 23.
That is, not only the column 2 but also the column-beam joint of the first beam 3 and the second beam 4 can be reinforced by the first reinforcing member 22 and the second reinforcing member 23.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the embodiments. It will be apparent to those skilled in the art that various changes or improvements can be made to the above embodiments. It is clear from the claims that such modified or modified forms may also be included in the technical scope of the invention.

For example, in the above-described embodiment, the first reinforcing member 22 and the second reinforcing member 23 are arranged in a grid shape, but as shown in FIG. 4A, the first reinforcing member 22 and the second reinforcing member 22 In addition to the reinforcing member 23, when viewed in the cross section of the column 2, the third beam side plate 25q which passes through the center of the column 2 and is arranged parallel to the first beam side plate 22q and the center of the column 2 A fourth beam-side plate member 26q arranged in parallel with the second beam-side plate member 23q may be further provided.
Further, in FIGS. 1 and 4A, the reinforcing members 22 and 23 are arranged symmetrically with respect to the center of the column 2, but as shown in FIG. 4B, the first reinforcing member 22 and the second reinforcing member 22 and the second are arranged. As shown in FIG. 4C, the number of the first reinforcing member 22 is two, the number of the second reinforcing member 23 is one, and the number of the second reinforcing member 23 is one. , 23 may be arranged asymmetrically with respect to the center of the pillar 2.
Alternatively, as shown in FIG. 4D, the second reinforcing member 23 may be omitted.

Further, in the above-described embodiment, the first column-side plate member 22p and the second column-side plate member 23p are extended from the upper beam-column joint 1A to the lower beam-column joint 1B, but the first beam The side plate material 22q is extended to the column-beam joint adjacent to either or both of the left and right directions (the length direction of the beam 3), and the second beam side plate material 23q is extended in the front-rear direction (the length of the beam 4). It may be extended to the beam-column joint adjacent to either or both of them.
Further, the first beam-side plate member 22p and the second column-side plate member 23p are not extended from the upper beam-side plate member 1A to the lower column-beam joint portion 1B, and the first beam-side plate member 22q or Only the second beam side plate member 23q may be extended to the column-beam joint adjacent in the left-right direction or the front-rear direction.
Further, in the above-described embodiment, as the wood shaft material 21a constituting the central wood portion 21 of the pillar 2, rectangular wood shaft members having the same cross section are arranged vertically and horizontally, but the wood shaft constituting the central wood portion 21 is arranged vertically and horizontally. The arrangement of the members is not limited to this. For example, as shown in FIG. 5A, a wood shaft member 21b having a rectangular cross section is arranged in the center, and a wood shaft member 21c having a rectangular cross section surrounds the wood shaft member 21b. It may be a so-called annual ring type arrangement. The wood shaft material 21a constituting the central wood part 21 of the pillar 2 may be a square wood shaft material having the same cross section.
Further, as shown in FIG. 5B, the wood shaft material 21a constituting the central wood part 21 of the pillar 2 is centered on the wood shaft material 21n having a rectangular cross section arranged in the center and the wood shaft material 21n. It may be composed of a plurality of wood shaft members 21 m having a rectangular cross section arranged in a spiral shape.

Further, in the above-described embodiment, structural laminated materials are used as the wood shaft members 21a and 24a and the wood board members 31a and 41a, but a single board is laminated and bonded so that the fiber directions are parallel to each other. Other wood materials such as laminated lumber (LVL) and cross laminated timber (CLT) may be used.
Further, in the above-described embodiment, the first reinforcing member 22 and the second reinforcing member 23 are made of steel plate, but concrete, mortar, or the like may be used, and cellulose nanofiber (CNF) or CNF may be used. A CNF resin composite material mixed with a resin, a mixture of CNF and a water-hard material such as cement or lime, or a mixture of CNF and other high-strength fibers such as carbon fiber and aramid fiber may be used. ..

1,1A, 1B column-beam joint, 21 central wood part, 21a wood shaft material,
22 1st reinforcing member, 22p 1st column side plate, 22q 1st beam side plate,
23 2nd reinforcing member, 23p 2nd column side plate, 23q 2nd beam side plate,
24 outer wood part, 24a wood shaft material,
3 First beam, 31a wood board, 4 Second beam, 41a wood board.

Claims (6)

It is a reinforcing structure of the column-beam joint, which is the joint between columns and beams.
The pillar and the beam include a plurality of wood materials and a reinforcing member sandwiched between the wood materials.
The reinforcing member is
A column side plate member arranged so that the thickness direction is perpendicular to the length direction of the column and the length direction of the beam and arranged at the column-beam joint of the column.
A beam-side plate material that projects from the beam-side side surface of the column-side plate material in the beam direction and extends to the inside of the beam is provided.
One or both of the column-side plate material and the beam-side plate material extends from the column-beam joint to the other joint, which is a column-beam joint adjacent to the beam-column joint. Reinforcing structure for beam-column joints. One or both of the column-side plate material and the beam-side plate material extended to the other joint portion is extended to the inside of the column of the other joint portion, or is connected to a reinforcing member arranged at the other joint portion. The reinforcing structure for a beam-column joint according to claim 1, wherein the column-beam joint is provided. When the reinforcing member is used as the first reinforcing member and the beam extending in the direction perpendicular to the plate surface of the first reinforcing member is used as the second beam,
The second beam is made of a plurality of wood materials.
At the beam-column joint,
A second column side plate material is arranged so that the thickness direction is perpendicular to the length direction of the second beam and the length direction of the column, and is arranged at the column-beam joint portion of the column. When,
A second beam-side plate having a second beam-side plate projecting from the side of the second column-side plate on the second beam side toward the second beam and extending to the inside of the second beam. Reinforcing members are placed and
One or both of the second column-side plate material and the second beam-side plate material extends from the column-beam joint to the other joint, which is a column-beam joint adjacent to the beam-column joint. The reinforcing structure for a beam-column joint according to claim 1 or 2, wherein the beam-column joint is provided. Either or both of the second column side plate and the second beam side plate extending to the other joint extend into the column of the other joint, or are arranged at the other joint. The reinforcing structure for a beam-column joint according to claim 3, wherein the column-beam joint is connected to a second reinforcing member. The third or fourth aspect, wherein the first reinforcing member and the second reinforcing member are arranged in a grid shape when viewed in a cross section of the beam-column joint. Reinforcement structure of the column-beam joint. The reinforcing structure for a beam-column joint according to any one of claims 1 to 5, wherein the wood material is a laminated wood in which a plurality of shaft materials or plate materials are laminated and bonded.

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