JP7598810B2 - Joint structure between metal pillar and wooden member - Google Patents

Description

The present invention relates to a joint structure between a metal column and a wooden member, and in particular to a joint structure between a metal column and a wooden member using a diaphragm in the metal column.

2. Description of the Related Art Conventionally, a joint structure in which a wooden pillar and a wooden wall material are joined by metal fittings, bolts, and nuts as joining means has been known (see Patent Document 1, etc.).
In addition, there is known a joint structure in which a non-wooden wall material made of a cement-based material or a gypsum-based material, such as an ALC board, a PC board, an extruded cement board, a fiber-mixed calcium silicate board, or a gypsum board, is joined to a metal column via a joining means (see Patent Document 2, etc.).

Patent No. 5920748 JP 2020-33772 A

As described above, there are known conventional joint structures in which a wooden pillar and a wooden wall material are joined via a joint means, and in which a metal pillar and a non-wooden wall material are joined via a joint means.
That is, in the conventional joint structure, attempts have been made to combine a wooden column with a wooden member, or a metal column with a non-wood member, but no attempt has been made to combine a metal column with a wooden member.
The present invention focuses on the combination of a metal column and a wooden member, and provides a structure for joining a wooden member to a metal column, i.e., a joining structure between a metal column and a wooden member, in particular, a joining structure between a metal column and a wooden member utilizing a diaphragm of the metal column.

The joint structure between a metal column and a wooden member of the present invention is a joint structure between a metal column and a wooden member, in which a diaphragm protruding from the periphery of the metal column is joined to the wooden member via a joining means, and the joining means comprises a joining member joined to the wooden member and a diaphragm-side joining means for joining the joining member to the diaphragm, and the diaphragm comprises a specific diaphragm portion protruding from a specific outer surface of the metal column, and the specific diaphragm portion is formed in a shape that has a longer protruding length from the outer surface of the metal column and a larger size than the other diaphragm portions, and is configured to function as a joining plate to be joined to the joining member joined to the wooden member .
The diaphragm is also characterized in that it comprises three other diaphragm portions protruding from three other outer surfaces of the metallic column other than the specific one outer surface .
The diaphragm side joining means is a bolt joining means or welding means that joins the plate portions of the overlapping joining members to the plate portion of a specific diaphragm portion.The present invention is also characterized in that a specific diaphragm portion of the metal column and the wooden member are joined so that the axis of the wooden member is eccentrically positioned from the core of the metal column.
According to the joint structure between a metal column and a wooden member of the present invention, the wooden member can be easily joined to the metal column by utilizing the diaphragm of the metal column.
Furthermore, the wooden member has a support surface positioned opposite the metal column, and the joining member has a support surface that contacts the support surface of the wooden member to suppress rotation of the wooden member, thereby realizing an ideal joining structure that can suppress rotation of the wooden member.
Furthermore, the wooden member has a support surface positioned so as to intersect with the core of the metal column, and the joining member has a support surface that contacts the support surface of the wooden member to suppress vertical movement of the wooden member, thereby realizing an ideal joining structure that can suppress vertical movement of the wooden member.
Since the wooden member is a wooden wall material or a wooden beam material, the wooden wall material or the wooden beam material can be easily joined to the metal column by utilizing the diaphragm of the metal column.

FIG. 1 is a front view showing a joint structure between a metal column and a wooden wall material (embodiment 1). FIG. 2 is a cross-sectional view (transverse cross-sectional view) taken along line AA in FIG. 1 (first embodiment). FIG. 1 is a longitudinal cross-sectional view showing an application example of a joint structure between a metal column and a wooden wall material (embodiment 1). FIG. 2 is an exploded perspective view showing a joint structure between a metal column and a wooden wall material (first embodiment). FIG. 4 is a front view showing a joining member (first embodiment). FIG. 2 is a longitudinal cross-sectional view of a metallic column (first embodiment). FIG. 13 is an exploded perspective view showing a joint structure between a metal column and a wooden beam (third embodiment).

EMBODIMENT 1
The joint structure between a metal column and a wooden member in embodiment 1 is a joint structure in which a diaphragm 10 protruding from the periphery of the metal column 1 is joined to a wooden wall material 2 as a wooden member via a joining means 3, as shown in Figures 1 and 2.
In this specification, the terms up, down, left, right, front, and rear are defined as directions shown in the drawings.

As shown in FIG. 4, the metallic column 1 is a metallic column having a square tubular cross section and equipped with a diaphragm 10 protruding from the peripheral surface of the column formed by four outer surfaces 1a, 1b, 1c, and 1d.
As the metallic column 1, for example, a square steel pipe having a diaphragm 10 protruding from the outer surfaces 1a, 1b, 1c, and 1d, that is, a square steel pipe having no directionality in the cross section and no difference in the cross-sectional performance, was used.

The metallic column 1 includes, as the diaphragm 10, for example, a plurality of diaphragms 10, 10 . . . spaced apart in the vertical direction.
The diaphragm 10 may be either a through diaphragm or an external diaphragm.
In the case where the diaphragm 10 is a through diaphragm, for example, as shown in Fig. 6, the upper end side of the lower box column part 1E formed by welding together the skin plate steel plates forming the outer sides 1a, 1b, 1c, 1d of the metallic column 1 is welded to the lower side of the steel plate forming the diaphragm 10, and the lower end side of the upper box column part 1F formed by welding together the skin plate steel plates forming the outer sides 1a, 1b, 1c, 1d of the metallic column 1 is welded to the upper side of the steel plate forming the diaphragm 10, so that the diaphragm 10 crosses the metallic column 1. In Fig. 6, the symbol 1S denotes a backing plate, and S denotes a welded part.
As shown in Figures 2 and 4, for example, the diaphragm 10 is configured to have a specific diaphragm portion 11 protruding from one specific outer surface 1a of the metallic column 1, and three other diaphragm portions 12, 12, 12 protruding from three other outer surfaces 1b, 1c, 1d of the metallic column 1.

A specific diaphragm portion 11 is configured to be different from the other diaphragm portions 12 in terms of shape, length of protrusion from the outer surfaces 1a, 1b, 1c, and 1d, etc.
For example, as shown in FIGS. 2 and 4, a specific diaphragm portion 11 is formed into a shape that has a longer protruding length from the outer surface 1a and is larger in size than the other diaphragm portions 12.
Specifically, the specific diaphragm portion 11 is formed in a flat plate shape having a plate surface area approximately twice the area of a diaphragm side joint portion 52 of the joint member 5 described later.
That is, the specific diaphragm portion 11 is configured to function as a joining plate to be joined to the joining member 5 joined to the wooden wall material 2 .

The wooden wall material 2 is a wall panel made of wood such as CLT (Cross Laminated Timber), laminated timber, LVL (Laminated Veneer Lumber), or solid wood.
Additionally, CLT, as defined in Notification No. 3079 of the Ministry of Agriculture, Forestry and Fisheries, is "a general material made by arranging or gluing planks or small square timber (including those which have been adjusted by joining and gluing them lengthwise with their grain directions roughly parallel to each other) in the width direction with their grain directions roughly parallel to each other, and then laminating and gluing them together mainly with their grain directions roughly perpendicular to each other to create a structure of three or more layers."
That is, CLT is generally a type of wood constructed by gluing together multiple boards so that the grain directions of the boards cross at right angles, and is known as cross-laminated timber.
Generally, laminated lumber is wood made by bonding together a number of boards so that the grain directions of the boards are parallel to each other.
Moreover, LVL is generally a wood material in which a plurality of veneer panels are laminated and glued together in a manner that is parallel to the grain direction of the veneer panels.
The wooden wall material 2 may be a general wall board for construction, or a wall board for forming a hanging wall (a hanging wall), or a wall board for forming a waist wall, or a wall board for forming a sleeve wall, or the like.
The wooden wall material 2 is formed, for example, from a rectangular flat wall board of a predetermined thickness having rectangular board surfaces 21, 21 that are long in the left-right (horizontal) direction.

The wooden wall material 2 has a recess 8 formed by cutting out a corner of a rectangular wooden wall material that is the basis of the wooden wall material 2.
That is, as shown in Figure 4, the upper recess 8 of the wooden wall material 2 formed by cutting out the upper corner of the wooden wall material 2 has a first supported surface 8A formed by a vertical plane perpendicular to the upper end face 23 and parallel to the side end face 22, and a second supported surface 8B formed by a horizontal plane perpendicular to the side end face 22 and parallel to the upper end face 23.
In other words, the upper recess 8 of the wooden wall material 2 is a notched recess consisting of a first supported surface 8A formed by a vertical surface extending downward from the side edge of the upper end face 23, and a second supported surface 8B formed by a horizontal surface extending from the extended end of the first supported surface 8A to the side end face 22.
Similarly, the lower recess 8 of the wooden wall material 2, formed by cutting out the lower corner of the wooden wall material 2, has a first supported surface 8A formed by a vertical plane perpendicular to the lower end face 24 and parallel to the side end face 22, and a second supported surface 8B formed by a horizontal plane perpendicular to the side end face 22 and parallel to the lower end face 24.
In other words, the lower recess 8 of the wooden wall material 2 is a notched recess consisting of a first supported surface 8A formed by a vertical surface extending upward from the side edge of the lower end face 24, and a second supported surface 8B formed by a horizontal surface extending from the extended end of the first supported surface 8A to the side end face 22.

In other words, the wooden wall material 2 has side end faces 22 which are the end faces in the left-right direction, which is the long dimension of the board surface 21, and upper end faces 23 and lower end faces 24 which are the end faces in the up-down direction, which is the short dimension of the board surface 21, and is formed by a rectangular flat wall panel having recesses 8 on the upper and lower sides of the side end faces 22.
Furthermore, the wooden wall material 2 is provided with an upper insertion groove 25 that opens to the upper first supported surface 8A and the upper end face 23, a lower insertion groove 25 that opens to the lower first supported surface 8A and the lower end face 24, and a plurality of pin through holes 26, 26... that are formed to penetrate one board surface 21, the insertion groove 25, and the other board surface 21 and allow a drift pin 26 to pass through.

The joining means 3 is configured to include a joining member 5 joined to the wooden wall material 2 and a diaphragm-side joining means for joining the joining member 5 to the diaphragm 10.

As shown in Figures 4 and 5, the joint member 5 is configured to include a wooden-wall-material-side joint 51 as a joint joined to the wooden wall material 2, a first bearing surface 7A that contacts the first bearing surface 8A of the wooden wall material 2 positioned to face the metal column 1 and suppresses rotation of the wooden wall material 2, a second bearing surface 7B that contacts the second bearing surface 8B of the wooden wall material 2 positioned to intersect with the column core 1C of the metal column 1 and suppresses vertical movement of the wooden wall material 2, and a diaphragm-side joint 52 that is joined to the diaphragm 10.

The rotation of the wooden wall material 2 mentioned above refers to the rotation of the wooden wall material 2 around an axis that is a virtual horizontal line perpendicular to the material axis 2C (see Figure 2) of the wooden wall material 2 joined to the metal column 1.
In addition, the vertical movement of the wooden wall material 2 refers to the movement of the wooden wall material 2 joined to the metal column 1 in a direction perpendicular to the material axis (vertical direction).

That is, as shown in Figures 4 and 5, the joint member 5 is composed of a bearing surface structure 7, a wooden wall material side joint portion 51 for the wooden wall material 2, and a diaphragm side joint portion 52 for the diaphragm 10 of the metal column 1.
The wooden wall material side joint 51 is constituted by the other end portion of a rectangular vertical plate 51A having a vertical surface formed by a rectangular plate surface that is long in the left-right direction, which is closer to the wooden wall material 2, and one end portion 51a of the vertical plate 51A, which is closer to the diaphragm 10, functions as a reinforcing member for the support surface structure 7.
In addition, the diaphragm side joint 52 is composed of one end portion of a rectangular horizontal plate 52A having a horizontal surface formed by a rectangular plate surface that is long in the left-right direction, which is closer to the diaphragm 10, and the other end portion 52a of the horizontal plate 52A, which is closer to the wooden wall material 2, is positioned so that the plate surface faces the upper end surface 23 or lower end surface 24 of the wooden wall material 2 and functions as a cover plate that covers the insertion groove 25.

As shown in FIG. 5, the support surface structure 7 is composed of a horizontal plate portion forming the diaphragm side joint 52, a support plate 7a, a middle side reinforcing plate 7c, and an end side reinforcing plate 7d formed by three vertical plates connected to the horizontal plate portion and arranged to extend vertically from one plate surface side of the horizontal plate portion, and a horizontal plate 7b arranged to be connected to the extended end sides of the support plate 7a, the middle side reinforcing plate 7c, and the end side reinforcing plate 7d.

The support plate 7a is configured to extend from a position near the boundary between the diaphragm side joint 52 and the other end portion 52a on one plate surface of the horizontal plate 52A, and is configured as a flat plate having a first support surface 7A formed by a vertical surface parallel to the first supported surface 8A.
The end side reinforcement plate 7d is arranged to extend from the edge (the edge located on the metal column 1 side) of the diaphragm side joint 52 on one plate surface of the horizontal plate 52A, and is composed of a flat plate having a vertical surface parallel to the first support surface 7A.
The intermediate side reinforcement plate 7c is arranged to extend from the diaphragm side joint 52 on one plate surface of the horizontal plate 52A, and is positioned midway between the support plate 7a and the end side reinforcement plate 7d, and is composed of a flat plate with a vertical surface parallel to the first support surface 7A.
The horizontal plate 7b is constituted by a flat plate having a second bearing surface 7B formed by a horizontal surface extending from the extension end of the first bearing surface 7A.

As shown in Figures 4 and 5, the vertical plate 51A forming the wooden wall material side joint 51 is formed by a flat plate having one long edge connected to a midpoint between the front and rear of one of the plate surfaces of the horizontal plate 52A and having a plate surface perpendicular to the plate surface of the horizontal plate 52A and the first support surface 7A.
The vertical plate 51A has one short edge side that constitutes the one end portion 51a that functions as a reinforcing member for the support surface structure 7, penetrating the midpoint between the front and rear of the support plate 7a and the intermediate side reinforcing plate 7c, and this one short edge side is connected to the end side reinforcing plate 7d, and the other short edge side of the vertical plate 51A functions as the wooden wall material side joint 51.
The plate surface opposite the plate surface forming the second support surface 7B of the horizontal plate 7b is configured to be in contact with one end side of the other long side edge of the vertical plate 51A so that the plate surface opposite the plate surface forming the second support surface 7B of the horizontal plate 7b is perpendicular to the plate surface of the vertical plate 51A.

As shown in FIG. 4, the diaphragm-side joint portion 52 of the joint member 5 is formed with bolt through holes 55, 55 . . .
Further, the wooden-wall-material-side joint portion 51 is formed with pin through holes 56 , 56 . . . that correspond to the plurality of pin through holes 26 , 26 .
In addition, the specific diaphragm portion 11 is formed with bolt through holes 65 , 65 . . . corresponding to the bolt through holes 55 , 55 . . . of the diaphragm side joint portion 52 .

In embodiment 1, the joining means 3 is composed of a joining member 5 joined to the wooden wall material 2 and a diaphragm side joining means that joins the joining member 5 to the diaphragm 10, and the diaphragm side joining means is composed of a bolt 61 and a nut 62 that joins the plate surface of the diaphragm side joining portion 52, which is the plate portion of the joining member 5 that are overlapped with each other, to the plate surface of a specific diaphragm portion 11, which is the plate portion of the diaphragm 10, while bringing them into surface contact (see Figures 1, 2, and 4).
Therefore, in the first embodiment, the diaphragm side joining means is constituted by bolt joining means for joining the plate portions of the joining member 5 and the plate portion of the specific diaphragm portion 11 which are overlapped with each other.
In other words, the joining means 3 joining the diaphragm 10 of the metal column 1 to the wooden wall material 2 is composed of a joining member 5 joined to the wooden wall material 2, and a diaphragm side joining means consisting of bolts 61 and nuts 62 that join the diaphragm side joining portion 52 of the joining member 5 that are overlapped on top of each other to a specific diaphragm portion 11 of the diaphragm 10.

An example of a construction procedure for the joint structure between a metal column 1 and a wooden wall material 2 according to the first embodiment will be described.
First, at a factory or on-site, the joint members 5, 5 are attached in advance to the upper and lower sides of the side end face 22 of the wooden wall material 2. The joint members 5, 5 having the same structure are attached upside down to the upper and lower sides of the side end face 22 of the wooden wall material 2.
That is, the wooden wall material side joint portion 51 of the joining member 5 is inserted into the insertion groove 25, the second bearing surface 7B is brought into contact with the second supported surface 8B, and the first bearing surface 7A is brought into surface contact with the first supported surface 8A of the wooden wall material 2, so that the pin through hole 26 of the wooden wall material 2 and the pin through hole 56 of the wooden wall material side joint portion 51 of the joining member 5 are aligned, and then the drift pin 27 is inserted into the pin through holes 26, 56, 26 in an engaged state, thereby joining the wooden wall material 2 and the joining member 5.
In addition, when the joint member 5 is attached to the wooden wall material 2, the outer surface 7f of the end side reinforcing plate 7d is positioned on the same plane as the side end surface 22 of the wooden wall material 2 (see Figure 1).
In addition, the wooden wall material 2, to which connecting members 5, 5 are attached on the upper and lower sides of the side end face 22, is formed so that the length between the upper plate surface of the diaphragm side joint 52 of the upper connecting member 5 and the lower plate surface of the diaphragm side joint 52 of the lower connecting member 5 corresponds to the length between specific diaphragm portions 11, 11 of the upper and lower diaphragms 10, 10 that protrude from the outer surface 1a of the metal column 1.
Then, the wooden wall materials 2 to which the joint members 5 are attached are installed on the left and right sides in front of the outer surface 1a of the metal column 1. That is, the left end side of the wooden wall material 2 installed on the right side is positioned on the right side between the upper and lower specific diaphragm parts 11, 11, and the right end side of the wooden wall material 2 installed on the left side is positioned on the left side between the upper and lower specific diaphragm parts 11, 11, so that the side end faces 22, 22 of the left and right wooden wall materials 2, 2 and the outer surfaces 7f, 7f of the end side reinforcing plates 7d, 7d of the upper and lower joint members 5, 5 are butted together in alignment with the center line 1ac between the face widths of the outer surface 1a of the metal column 1.
Then, a nut 62 is fastened to the tip end of a bolt 61 which has been inserted through the bolt through hole 55 of the diaphragm side joint portion 52 and the bolt through hole 65 of the specific diaphragm portion 11 .
As a result of the above, the left and right wooden wall materials 2, 2 are each joined to the metal column 1 by the joining means 3 composed of the joining member 5 joined to the wooden wall material 2 and the diaphragm side joining means consisting of the bolts 61 and nuts 62 that join the diaphragm side joining portions 52 of the overlapping joining members 5 to a specific diaphragm portion 11 of the diaphragm 10.

In this case, as shown in Figure 2, a specific diaphragm portion 11 of the diaphragm 10 of the metal column 1 is joined to the wooden wall materials 2, 2 so that the material axis 2C of the wooden wall material 2 is positioned eccentrically from the column core 1C of the metal column 1.
Therefore, for example, as shown in Fig. 3, in a building that is configured so that the inside of the building can be easily seen from the outside through the window glass 15, it is possible to realize a structure in which a wooden wall material 2 such as a hanging wall (dropped wall) at the edge of the window glass 15 is joined to a metal column 1. In this case, it is possible to realize a highly designed building in which the metal column 1 is not visible between the left and right wooden wall materials 2, 2 when the building is viewed from the outside.
In FIG. 3, reference numeral 16 denotes a steel beam joined to the other diaphragm portion 12 of the metal column 11, reference numeral 17 denotes a floor, and reference numeral 18 denotes a steel beam (sub-beam) joined to the steel beam 16.

According to the joining structure of embodiment 1, the wooden wall material 2 and a specific diaphragm portion 11 of the diaphragm 10 of the metal column 1 are joined using a joining means 3 including a joining member 5 joined to the wooden wall material 2 and a bolt 61 and a nut 62 constituting a diaphragm-side joining means for joining the joining member 5 to the diaphragm 10, so that the wooden wall material 2 can be easily joined to the metal column 1.
In addition, it becomes possible to join a specific diaphragm portion 11 of the diaphragm 10 of the metal column 1 to the wooden wall materials 2, 2 so that the material axis 2C of the wooden wall material 2 is positioned eccentrically from the column core 1C of the metal column 1.
Furthermore, according to the joining structure of embodiment 1, a wooden wall material 2 having a recess 8 at the corner is used, and a joining member 5 having a support surface structure 7 is used. Therefore, by making the first support surface 7A of the joining member 5 and the first supported surface 8A of the wooden wall material 2 in surface contact, it is possible to suppress rotation of the wooden wall material 2, and by making the second support surface 7B of the joining member 5 and the second supported surface 8B of the wooden wall material 2 in surface contact, it is possible to realize a suitable joining structure that can suppress vertical movement of the wooden wall material 2.

In the first embodiment, the first supported surface 8A and the first supporting surface 7A that are in surface contact with each other do not have to be completely vertical, but may be nearly vertical. In other words, the first supported surface 8A and the first supporting surface 7A may be formed so as to be in surface contact with each other and suppress rotation of the wooden wall material 2.
Similarly, the second supported surface 8B and the second supporting surface 7B that are in surface contact with each other do not have to be completely horizontal, but may be nearly horizontal. In other words, the second supported surface 8B and the second supporting surface 7B may be surfaces that are formed so as to be in surface contact with each other and suppress the vertical movement of the wooden wall material 2.

As shown in FIG. 3, if a normal diaphragm 10A for joining a steel beam 16 is provided between the upper and lower diaphragms 10, 10, that is, a conventionally known diaphragm 10A in which the diaphragm portions protruding from the four outer surfaces 1a, 1b, 1c, 1d of the metal column 1 are all formed in the same diaphragm portion (e.g., other diaphragm portion 12), then, for example, a groove for removing the diaphragm portion of the diaphragm 10A can be formed in the rear panel surface (back surface) of the left and right wooden wall materials 2, 2.

Furthermore, in a configuration in which a specific diaphragm portion 11 of the diaphragm 10 of the metal column 1 is joined to the wooden wall materials 2, 2 so that the material axis 2C of the wooden wall material 2 is in an eccentric position from the column core 1C of the metal column 1, a joining plate attached by welding or the like to the metal column 1 and the rear panel surface (back surface) side of the wooden wall materials 2, 2 may be joined using a locking screw or the like, although this is not shown in the figure.
In addition, in such a case where a joining plate attached to the metal column 1 by welding or the like is joined to the rear panel (back surface) side of the wooden wall materials 2, 2 using locking screws or the like, a recess (not shown) may be formed on the rear panel (back surface) side of the left and right wooden wall materials 2, 2 to avoid the outer surface 1a of the metal column 1.

The diaphragm side joining means may be constructed by a welding means that joins the diaphragm side joining portion 52 of the overlapping joining members 5 to a specific diaphragm portion 11 of the diaphragm 10.

EMBODIMENT 2
It is also possible to use a wooden wall material having a first support surface 8A but no second support surface 8B, and to use a second connecting member having a first support surface 7A but no second support surface 7B.
Conversely, it is also possible to use a wooden wall material that has a second support surface 8B but does not have a first support surface 8A, and to use a second connecting member that has a second support surface 7B but does not have a first support surface 7A.
This is because even with this configuration, a joint structure can be realized that can suppress rotation or vertical movement of the wooden wall material.

In the first and second embodiments, the wooden wall material 2 and the joint member 5 may be joined by means other than a drift pin, for example, by bolts and nuts.
Further, although an example has been given in which steel plates are used as the joining members 5, these joining members may be plate-shaped members other than steel plates, for example, plate-shaped members made of metals other than steel, or plate-shaped members other than metals may be used.

EMBODIMENT 3
As shown in FIG. 7, a wooden beam 2Z serving as a wooden member may be joined to a specific diaphragm portion 11 of a metal column 1.
For example, a metal column 1 is used that has a diaphragm 10 having specific diaphragm portions 11, 11 each protruding from a pair of opposing outer surfaces (e.g., outer surfaces 1a, 1d) and other diaphragm portions 12, 12 each protruding from the other pair of opposing outer surfaces (e.g., outer surfaces 1b, 1c), and a wooden beam material 2Z is joined to each of the specific diaphragm portions 11, 11, and a steel beam material 1Z made of H-shaped steel or the like is joined to each of the other diaphragm portions 12, 12.
A specific diaphragm portion 11 is formed in a shape that has a longer protruding length from the outer surface and is larger in size than the other diaphragm portions 12.
In other words, a specific diaphragm portion 11 of the metal column 1 is used as a joint portion for joining to a wooden beam material 2Z, and other diaphragm portions of the metal column 1 are used as joint portions for joining to a steel beam material 1Z.
The specific diaphragm portion 11 and the wooden beam 2Z may be joined by joining a joining member attached to the wooden beam 2Z to the specific diaphragm portion 11 with a bolt and nut, welding, etc., or the specific diaphragm portion 11 and the wooden beam 2Z may be joined with a drift pin, etc. For example, when joining with a bolt and nut or a drift pin, a through hole 11H is formed in the specific diaphragm portion 11.
According to embodiment 3, by joining a wooden beam 2Z to a specific diaphragm portion 11 which is formed in a shape that has a longer protruding length from the outer surface and a larger size compared to the other diaphragm portions 12, the joining strength between the wooden beam 2Z and the metal column 1 can be improved and the strength difference between the joining strength between the wooden beam 2Z and the metal column 1 and the joining strength between the steel beam 1Z and the metal column 1 can be reduced, which is preferable.

The numbers of the pin through holes and bolt through holes may be freely set as appropriate depending on the required strength, the number of drift pins, and the number of bolts.
Moreover, it is preferable to use high-strength bolts (high tension bolts) as the above-mentioned bolts.

In addition, although an example has been shown in which a square steel pipe is used as the metal column 1, the metal column 1 may also be a steel pipe with a triangular, circular, polygonal, or other cross section.

Although wooden wall material 2 and wooden beam material 2Z are given as examples of wooden members, the wooden members may be, for example, wooden flooring materials or other materials.

Furthermore, the present invention may also be a joining structure in which a metal column having a diaphragm in which the diaphragm portions protruding from the four outer surfaces are all formed as the same diaphragm portion, i.e., a metal column having the above-mentioned conventionally known diaphragm 10A, is used, and the diaphragm portion of the diaphragm of the metal column is joined to a wooden member via a joining means.
For example, the present invention may be a joining structure in which a wooden member and a metal column are joined by joining the above-mentioned joining member 5 joined to a wooden member and a conventionally known diaphragm 10A provided on a metal column via a diaphragm-side joining means such as bolts and nuts or welding.

1 Metal column, 2 Wood wall material (wooden member), 2Z Wood beam material (wooden member),
3 Joining means, 5 Joining member, 7A First bearing surface (bearing surface),
7B second bearing surface (bearing surface), 8A first supported surface (supported surface),
8B second bearing surface (bearing surface), 10, 10A diaphragm.

Claims (7)

A joint structure between a metal column and a wooden member, in which a diaphragm provided so as to protrude from the periphery of the metal column and the wooden member are joined via a joining means,
The joining means is
A joining member joined to the wooden member;
a diaphragm-side joining means for joining the joining member and the diaphragm,
The diaphragm has a specific diaphragm portion protruding from a specific outer surface of the metallic column,
A joint structure between a metal column and a wooden member, characterized in that a specific diaphragm portion is formed in a shape that protrudes longer from the outer surface of the metal column and is larger in size than other diaphragm portions, and is configured to function as a joint plate to be joined to a joint member joined to the wooden member . 2. A joint structure between a metal column and a wooden member as described in claim 1 , characterized in that the diaphragm has three other diaphragm portions protruding from three other outer surfaces other than a specific outer surface of the metal column . A joining structure between a metal column and a wooden member as described in claim 1 or claim 2, characterized in that the diaphragm side joining means is a bolt joining means or welding means for joining the plate portions of the overlapping joining members to the plate portions of a specific diaphragm portion. A joint structure between a metal column and a wooden member as described in any one of claims 1 to 3, characterized in that a specific diaphragm portion of the metal column and the wooden member are joined so that the material axis of the wooden member is eccentrically positioned from the core of the metal column. The wooden member has a bearing surface positioned so as to face the metal column,
5. A joint structure between a metal column and a wooden member according to claim 1, characterized in that the joint member has a bearing surface that contacts the supported surface of the wooden member to suppress rotation of the wooden member. The wooden member has a bearing surface positioned so as to intersect with the column core of the metal column,
A joining structure between a metal column and a wooden member as described in any one of claims 1 to 5, characterized in that the joining member has a support surface that contacts the supported surface of the wooden member to suppress vertical movement of the wooden member. A joint structure between a metal column and a wooden member according to any one of claims 1 to 6, characterized in that the wooden member is a wooden wall material or a wooden beam material.

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