JP7832036B2 - Joining members, joint structure between columns and beams - Google Patents

Description

This invention relates to a joining member, etc., for joining beams of different heights to a rectangular steel pipe column.

Conventionally, in structures using rectangular steel pipe columns, beams made of H-shaped steel are sometimes joined. When joining columns and beams, it is necessary to efficiently transfer stress from the beam to the column at the joint. For this purpose, a through-diaphragm corresponding to the height of the beam's flange is required. A through-diaphragm is a plate-like member joined between columns by welding or other means. When a through-diaphragm is used, the beam's flange is butted against the side of the through-diaphragm and welded.

However, the size (height) of the beams joined to the columns may not be the same in all directions. For example, a beam with a lower height may be joined in only one direction. In such cases, at least one of the upper or lower flanges of that beam cannot be joined to the through diaphragm to which the other beams are joined.

As a column-beam joint structure for joining beams of different heights, a method has been disclosed (Patent Document 1) in which, when there is a step difference in the flanges of the left and right beams, multiple diaphragms are provided at the respective flange positions, and the beams are joined by non-scallop welding, which does not provide scallops (notches for welding) at the ends of the beams, in order to create a structure with excellent mechanical properties such as deformation performance.

Japanese Patent Publication No. 2001-329613

However, as described in Patent Document 1, the process of installing an internal diaphragm inside the column has problems such as requiring a large amount of welding and poor workability. Furthermore, the structure described in Patent Document 1 requires the column-beam joint to be integrally molded, resulting in a large mass of metal parts and high cost.

Furthermore, joining the internal diaphragm to the column requires working space for welding. However, if the heights of the beams being joined differ, and the difference is small, the internal diaphragm and the through diaphragm will be too close together, making it impossible to secure sufficient space for welding. In such cases, the internal diaphragm cannot be joined.

This invention has been made in view of the above problems, and aims to provide a joining member, etc., that can accommodate even small differences in beam height when joining beams of different heights to a square steel pipe column.

To achieve the aforementioned objective, the first invention is a joint member for connecting a beam to a column, which is a substantially rectangular annular member having four faces corresponding to the sides of the column, and is equipped with protrusions that project outward on at least two faces to which the flange portion of the beam is joined, the height positions at which the protrusions are formed on at least two faces are different, a plurality of divided pieces are joined together to form a single unit, and on at least two faces, the protrusion of one of the divided pieces and the side end face of another divided piece adjacent to it on one side are exposed, and the outer surface of the protrusion and the side end face are formed in substantially the same plane .

The four aforementioned segmented pieces may be joined together to form a single integrated structure.

At least one surface does not need to have the aforementioned protrusion formed thereon.

The second invention is a joint member for connecting a beam to a column, which is a substantially rectangular annular member having four faces corresponding to the sides of the column, and is equipped with protrusions that project outward on at least two faces to which the flange portion of the beam is joined, the height positions at which the protrusions are formed on at least two faces are different, the protrusions are not formed on at least one face, and the joint member is formed by joining together two elongated segmented pieces that are arranged opposite each other and two flat segmented pieces that are arranged between the elongated segmented pieces, the protrusions are formed on the outer circumferential surface of the elongated segmented pieces and the protrusions are not formed on the flat segmented pieces .

The third invention is a joint member for connecting a beam to a column, which is a substantially rectangular annular member having four faces corresponding to the sides of the column, and is equipped with projections that protrude outward on at least two faces to which the flange portion of the beam is joined, the height positions at which the projections are formed on at least two faces are different, and a groove is formed on the surface where the projection is formed in a direction perpendicular to the direction in which the projection is formed, into which the web of the beam is inserted.

According to the inventions of the first to third inventions, in a substantially rectangular annular member, protrusions are formed on at least two surfaces (two directions) to which the flanges of beams are joined, and by changing the height position where the protrusions are located depending on the direction, beams of different sizes can be joined.

Furthermore, if the joining member is formed by joining multiple segmented pieces together, a wide variety of variations can be accommodated by combining a minimum number of segmented pieces.

In particular, if the four divided pieces are joined together to form a single unit, the beam's joint position can be changed for each of the four faces (four directions).

If the outer surface of the protruding portion and the side end surface of the adjacent segment are formed on approximately the same plane, the beam can be joined along the entire length of the connecting member.

Furthermore, two elongated segmented pieces positioned opposite each other may be combined, in which case two flat, plate-shaped segmented pieces may be joined between the elongated segmented pieces. This allows for the use of ordinary plate-shaped members in the direction where the beam is not joined, thereby reducing costs.

In this way, by avoiding the formation of protrusions on at least one surface and instead providing protrusions only in the direction in which the beams are joined, material costs can be reduced.

Furthermore, by forming a groove in the surface where the protrusion is formed, perpendicular to the direction of protrusion formation, into which the beam web is inserted, the alignment of the beam and the connecting member is facilitated.

The fourth invention is a column-beam joint structure using a jointing member according to the first to third inventions, characterized in that the jointing member is joined to the column, beams of different heights are arranged on different faces of the jointing member, and the upper and/or lower flange portions of the beams are joined to the protruding portion.

According to the fourth invention, a joint structure can be obtained in which beams of different heights are arranged on different surfaces of a joint member joined to a column.

According to the present invention, when joining beams of different heights to a rectangular steel pipe column, it is possible to provide a joining member that can accommodate even small differences in beam height.

A perspective view showing column-beam joint structure 1. A perspective view showing the joining member 3. (a) is a perspective view showing segment 5a, and (b) is a perspective view showing segment 5b. (a) and (b) are diagrams showing the joint structure of the connecting member 3 and beams 7a and 7b when viewed from different directions. (a) and (b) are diagrams showing other forms of the protruding portion 11. A perspective view showing the joining member 3a. A diagram showing the joint structure between the joining member 3a and the beam 7b. A perspective view showing the joining member 3b. (a) is a perspective view showing the joining member 3c, and (b) is a perspective view showing the joining member 3d. (a) is a perspective view showing the joining member 3e, and (b) is a perspective view showing the joining member 3f. A perspective view showing the joining member 3g. A perspective view showing the joining member 3h. A perspective view showing column-beam joint structure 1a.

The following describes a column-beam joint structure 1 according to an embodiment of the present invention. Figure 1 is a perspective view showing the column-beam joint structure 1. The column-beam joint structure 1 is a structure in which multiple beams 7a and 7b are joined to the side surface of a column 6.

Column 6 is a hollow rectangular steel pipe column, and beams 7a and 7b are H-shaped steel beams. Beams 7a and 7b have different heights. In the example shown in Figure 1, beam 7a is formed in one direction of column 6, and beams 7b are formed in the other three adjacent directions. However, this is not limited to this configuration, and beams 7a may be provided in multiple directions.

A diaphragm 9 is joined to the column 6. The diaphragm 9 is a through-diaphragm that protrudes outward from the column 6. A connecting member 3 is provided at a predetermined distance from the column 6 to the diaphragm 9. The dimensions of the connecting member 3 and the diaphragm 9 in plan view are approximately the same. That is, the amount of protrusion of the diaphragm 9 and the connecting member 3 relative to the side surface of the column 6 is approximately the same. In the illustrated example, the diaphragm 9 is provided above and the connecting member 3 is provided below, but this may be reversed, or instead of the diaphragm 9, a pair of connecting members 3 may be arranged vertically at a predetermined distance.

The ends of the upper and lower flanges of beam 7a are joined to the diaphragm 9 and the connecting member 3 by welding, respectively. Similarly, the ends of the upper and lower flanges of beam 7b are joined to the diaphragm 9 and the connecting member 3 by welding, respectively. In other words, the diaphragm 9 and the connecting member 3 serve as the components that connect beams 7a and 7b to the column 6.

Figure 2 is a perspective view of the joining member 3, Figure 3(a) is a perspective view showing the segmented piece 5a, and Figure 3(b) is a perspective view showing the segmented piece 5b. The joining member 3 is a roughly rectangular annular member having four faces corresponding to the sides of the column, and has a roughly square outer shape in plan view. The joining member 3 is constructed by joining multiple segmented pieces 5a and 5b together. In the illustrated example, four plate-shaped segmented pieces 5a and 5b are joined together. Since the segmented pieces 5a and 5b are joined by welding, grooves for welding may be formed, for example, on the outer or inner surface.

As shown in Figure 3(a), a portion of the inner surface of the divided piece 5a (the surface opposite to the surface where the protrusion 11 is formed) has a curved surface corresponding to the curved shape of the corner of the column 6, and a protrusion 11 that projects outward is formed on the outer surface. The protrusion 11 is formed along the entire length in the longitudinal direction. Here, A in the figure is the height direction, and B in the figure is the thickness direction. That is, the protrusion 11 is the part that is thicker than other parts. Also, in the divided piece 5a, the protrusion 11 is formed approximately in the center in the height direction.

As shown in Figure 3(b), like segment 5a, segment 5b also has a curved portion on its inner surface that corresponds to the curved shape of the corner of the column 6, and a projection 11 that protrudes outward on its outer surface. In segment 5b, the projection 11 is formed along the entire length in the longitudinal direction at one end (lower end) in the height direction. That is, segment 5a and segment 5b differ in the height at which the projection 11 is formed (the height position of the center of the projection 11 in the height direction).

As shown in Figure 2, by combining four approximately identically sized segmented pieces 5a and 5b, a roughly rectangular annular member is formed. In this process, the side end face 17 of one longitudinal side (the side on which a curved surface is formed) of each segmented piece 5a and 5b is exposed so as to protrude onto the side of the protruding portion 11 of the adjacent segmented piece 5a or 5b that is joined to that side. Furthermore, the side end face of the other longitudinal side (the side on which no curved surface is formed) of each segmented piece 5a or 5b is abutted against the protruding portion of the adjacent segmented piece 5a or 5b that is joined to that side. That is, the outer surface of each side of the joining member 3 is composed of the outer surface of the segmented piece 5a or 5b positioned on that surface and a portion (side end face 17) of the adjacent segmented piece 5a or 5b.

Furthermore, the upper and lower surfaces of the connecting member 3 become the column joint 13 to which the column 6 is joined. In this case, a curved shape corresponding to the shape of the column 6 is formed on the inner surface of the connecting member 3, allowing the thickness of the column 6 and the thickness of each segmented piece 5a and 5b (excluding the protruding portion 11) to be brought close together. The protruding portion 11 is positioned facing outward and becomes a beam joint 15 to which either beam 7a or beam 7b is joined.

Figure 4(a) shows the joint structure between the column and beam as viewed from the beam 7b side, and Figure 4(b) shows the joint structure between the column and beam as viewed from the beam 7a side. As mentioned above, beams 7a and 7b are H-shaped steel beams consisting of a pair of flange portions 19 and a web portion 21 that connects the flange portions 19.

The upper flange portions 19 of beams 7a and 7b are joined to the diaphragm 9 by welding. The lower flange portions 19 of beams 7a and 7b are joined to the connecting member 3 by welding. That is, the distance between the diaphragm 9 and the protruding portion 11 of the connecting member 3, with respect to each direction (side) of the column 6, coincides with the distance between the flange portions 19 of beams 7a and 7b.

As mentioned above, the height at which the protruding portion 11 is formed differs between the divided piece 5a and the divided piece 5b. Furthermore, the protruding portion 11 forms the joint of the flange portion 19 of the beams 7a and 7b. That is, the height at which the flange portion 19 is joined differs depending on the direction in which the divided piece 5a is positioned and the direction in which the divided piece 5b is positioned. Therefore, in the direction in which the divided piece 5a is positioned, the distance between the diaphragm 9 and the protruding portion 11 of the joining member 3 is relatively narrow, and the lower beam 7a is joined. Conversely, in the direction in which the divided piece 5b is positioned, the distance between the diaphragm 9 and the protruding portion 11 of the joining member 3 is relatively wide, and the higher beam 7a is joined. Thus, in the column-beam joint structure 1, beams 7a and 7b of different heights are positioned on different faces of the joining member 3, and the upper and/or lower flange portions 19 of beams 7a and 7b are joined to the protruding portion 11.

As shown in Figure 2, when the divided pieces 5a and 5b are combined, on the surface where the protruding portion 11 is formed, the protruding portion 11 of one divided piece 5a or 5b and the side end surface 17 of the other divided piece 5a or 5b adjacent to it are exposed, and the outer surface of the protruding portion 11 and the side end surface 17 are formed on approximately the same plane. That is, no large step is formed between the protruding portion 11 and the side end surface 17, and the beam joint 15 is formed to span both the protruding portion 11 and the side end surface 17. Therefore, the flange portions 19 of beams 7a and 7b can be joined along approximately the entire length of the joining member 3. As a result, stress from beams 7a and 7b can be reliably transmitted to the column 6.

Here, the height difference in which the protrusions 11 are formed on the divided pieces 5a and 5b is, for example, 100 mm or less, and may be even 50 mm or less. Thus, this embodiment is particularly effective when it is difficult to install an internal diaphragm, such as when the height difference between beams 7a and 7b is 100 mm or less, and even 50 mm or less.

The cross-sectional shape of the protruding portion 11 does not have to be approximately rectangular. For example, as shown in Figure 5(a), it may be a trapezoidal shape in which the length of the protruding portion 11 in the height direction (direction A in the figure) decreases in a roughly linear fashion as it approaches the tip side (right side in the figure) in the thickness direction (B in the figure). Alternatively, as shown in Figure 5(b), the length of the protruding portion 11 in the height direction (direction A in the figure) may decrease in a curved fashion as it approaches the tip side (B in the figure). In other words, the protruding portion 11 may have a shape in which the width gradually changes from the tip to the base. The shape of the protruding portion 11 may be the same for the divided pieces 5a and 5b, or it may be different.

As described above, according to this embodiment, beams 7a and 7b of different heights can be joined to the column 6, and stress from beams 7a and 7b can be efficiently transmitted to the column 6. Furthermore, this method can be applied even when the height difference between beams 7a and 7b is small, such as when an internal diaphragm cannot be installed.

Furthermore, since the joining member 3 is formed by combining and joining different segmented pieces 5a and 5b, the segmented pieces 5a and 5b to be used can be selected according to the arrangement of beams 7a and 7b in relation to the direction of each column 6, allowing for many variations with a small number of parts. In the embodiment described above, two types of segmented pieces 5a and 5b were combined, but three or more types of segmented pieces with different heights of the protruding portion 11 may also be combined.

Furthermore, since the outer surface of the protruding portion 11 and the side end surfaces 17 of the adjacent divided pieces 5a and 5b are formed on the same plane, the approximately entire length of the side of the joining member 3 can be used as the beam joint portion 15.

Next, a second embodiment will be described. Figure 6 is a perspective view showing the joining member 3a according to the second embodiment. In the following description, components that perform the same functions as those in the first embodiment are denoted by the same reference numerals as in Figures 1 to 5, and redundant explanations are omitted.

The joining member 3a is substantially the same as the joining member 3, but differs in that it uses divided pieces 5c and 5d. The divided pieces 5c and 5d differ in that grooves 23 are formed on them relative to the divided pieces 5a and 5b. The grooves 23 are formed approximately in the center of each side in a plan view of the joining member 3a. Furthermore, the grooves 23 are formed across the entire height of the portion excluding the protruding portion 11. That is, the grooves 23 are formed on the surface where the protruding portion 11 is formed, in a direction perpendicular to the formation direction of the protruding portion 11.

Figure 7 is a cross-sectional view showing the state in which the beam 7b is joined to the joining member 3a. As described above, the flange portion 19 is joined to the protruding portion 11. At this time, the web portion 21 is inserted into the groove 23 on the outer surface of the joining member 3a. In this way, by making the web portion 21 protrude from the flange portion 19 at the end of the beam to be joined and inserting it into the groove 23 on the outer surface of the joining member 3a, the beam can be easily positioned. In this case, the column joint portion 13 is located inside the groove 23 on the upper and lower surfaces of the joining member 3a.

According to the second embodiment, the same effects as the first embodiment can be obtained. Furthermore, by providing the groove 23 and inserting the web portions 21 of beams 7a and 7b into the groove 23, the positioning of beams 7a and 7b becomes easier.

Next, a third embodiment will be described. Figure 8 is a perspective view showing the joining member 3b according to the third embodiment. The joining member 3b is substantially the same as the joining member 3, but differs in that it uses divided pieces 5e and 5f. Unlike divided pieces 5a and 5b, the divided pieces 5e and 5f do not have a curved surface formed on their inner surface corresponding to the inner surface shape of the column 6, and are formed with the same cross-section in the longitudinal direction.

If the corners of the column 6 do not have a curved shape, or if the radius (R) is small, it is not necessary to form an inner surface shape corresponding to the shape of the column 6, as is the case with the joining member 3b. Although the wall thickness needs to be slightly increased, since it is formed with the same cross-sectional shape, for example, a long extruded material can be cut to a predetermined length to form the divided pieces 5e and 5f. Therefore, it is possible to form multiple sizes of joining members 3b from the same material.

Furthermore, since the segmented piece 5f has a projection 11 formed on one end in the height direction, by reversing its orientation, the projection 11 can be positioned on either the lower or upper end. Therefore, when combining two types of segmented pieces 5e and 5f, the projection 11 can be formed at three different height positions. Note that the joining member 3b can also be composed solely of segmented pieces 5f of the same shape. In this case, the orientation of the segmented piece 5f in at least one direction relative to the other direction should be reversed for use in the joining member 3b.

According to the third embodiment, the same effects as the first embodiment can be obtained. Furthermore, since the cross-sectional shape of the divided pieces 5e and 5f is constant in the longitudinal direction, the divided pieces 5e and 5f can be obtained simply by using a long extruded material and cutting it to a predetermined length. Also, since the position where the protrusion 11 is formed on the divided piece 5f is not at the center in the height direction, the height position of the protrusion 11 can be changed by using it upside down.

Next, a fourth embodiment will be described. Figure 9(a) is a perspective view showing the joining member 3c according to the fourth embodiment. The joining member 3c is substantially the same as the joining member 3, but differs in that it uses divided pieces 5g and 5h.

In the aforementioned embodiments, the joining member was formed by combining four plate-shaped segments to create a roughly rectangular, annular joining member. However, the joining member 3c is constructed by combining two L-shaped segments 5g and 5h. Each segment 5g and 5h has a relatively longer side and a relatively shorter side. The length of the longer side of segments 5g and 5h is approximately equal to the length of the side of the joining member 3d. The longer side alone constitutes one side of the joining member 3c, while the length of the shorter side and the thickness of the adjacent segments 5g and 5h (side end face 17) constitute the other side of the joining member 3d.

Like segment 5a, segment 5g has a projection 11 formed approximately in the center in the height direction. Similarly, like segment 5b, segment 5h has a projection 11 formed on one end in the height direction. Therefore, when segment 5g and 5h are combined, the heights of adjacent pairs of projections 11 are the same, while the heights of adjacent pairs of projections 11 differ from the heights of other adjacent pairs of projections 11.

As shown in Figure 9(b), multiple pieces of the same type 5i may be combined. The 5i is roughly L-shaped, with a projection 11 on one side (the longer side) formed approximately in the center in the height direction, and a projection 11 on the other side (the shorter side) formed at one end in the height direction. The arrangement of the projections 11 may be reversed between the longer and shorter sides. In the joining member 3d, the heights of opposing pairs of projections 11 are the same, while the height of this opposing pair of projections 11 differs from the height of another pair of projections 11 facing in a direction perpendicular to it.

According to the fourth embodiment, the same effects as the first embodiment can be obtained. Furthermore, since the segmented pieces 5g, 5h, and 5i are approximately L-shaped, the number of members to be joined can be reduced.

Next, a fifth embodiment will be described. Figure 10(a) is a perspective view showing a joining member 3e according to the fifth embodiment. The joining member 3e is substantially the same as the joining member 3, but differs in that it uses a divided piece 5j. The divided piece 5j is a substantially U-shaped member, and by joining them so that their end faces abut each other, a substantially rectangular joining member 3e is constructed.

Each divided piece 5j has opposing short sides and a long side connecting the two short sides. In divided piece 5j, the projection 11 on the long side is formed approximately in the center in the height direction, and the projection 11 on the short side is formed at one end in the height direction. Alternatively, as shown in Figure 10(b), a divided piece 5k may be used where the projection 11 on the long side is formed at one end in the height direction, and the projection 11 on the short side is formed approximately in the center in the height direction. In this case, one of the divided pieces 5k can also be used upside down.

According to the fifth embodiment, the same effects as the first embodiment can be obtained. Furthermore, since the divided pieces 5j and 5k are roughly U-shaped, the number of members to be joined can be reduced.

Next, a sixth embodiment will be described. Figure 11 is a perspective view showing a joining member 3g according to the sixth embodiment. The joining member 3g is composed of divided pieces 5l and 5m. Divided piece 5l is longer than divided piece 5m, and divided piece 5l alone constitutes one side of the joining member 3g. Divided piece 5m is sandwiched between divided pieces 5l from both sides, and the thickness of both divided pieces 5l and divided piece 5m constitute one side of the joining member 3g.

In the illustrated example, the protruding portion 11 of the segmented piece 5l is formed approximately in the center in the height direction, and the protruding portion 11 of the segmented piece 5m is formed on one end in the height direction; however, the reverse is also possible. Since the segmented pieces 5l and 5m have a constant cross-sectional shape in the longitudinal direction, they can be manufactured by cutting a long extruded material, similar to the joining member 3b described above.

According to the sixth embodiment, the same effects as the third embodiment can be obtained. Thus, the method of combining the divided pieces is not particularly limited; divided pieces 5l and 5m of different lengths may be combined.

Next, a seventh embodiment will be described. Figure 12 is a perspective view showing a joining member 3h according to the seventh embodiment. The joining member 3h has substantially the same configuration as the joining member 3, but differs in that it is composed of divided pieces 5n, 5o, and 5p. Similar to the joining member 3g, long divided pieces 5n and 5p and a short divided piece 5o are combined, and the divided piece 5o is sandwiched between two opposing long divided pieces 5n and 5p to join and integrate them.

On the outer periphery of segmented piece 5n, a projection 11 is formed approximately in the center in the height direction. On the outer periphery of segmented piece 5p, a projection 11 is formed on one end in the height direction. Since segmented pieces 5n and 5p are arranged facing each other, the joining member 3h has projections 11 of different heights formed on a pair of opposing sides. On the other hand, segmented piece 5o is a flat plate-shaped member on which no projections 11 are formed. That is, the joining member 3h does not have projections 11 formed on a pair of opposing sides perpendicular to the direction in which the projections 11 are formed.

Figure 13 shows a column-beam joint structure 1a using a connecting member 3h. As described above, a diaphragm 9 is joined to the column 6 at a predetermined position, and the connecting member 3h is positioned below the diaphragm 9 at a predetermined interval. In the column-beam joint structure 1a, a pair of beams 7a and 7b are joined to the column 6 in directions opposite to each other, and no beams are joined in directions perpendicular to this. In such cases, it is not necessary to form a protrusion 11 in the direction in which the beams are not joined.

According to the seventh embodiment, the same effects as the first embodiment can be obtained. Furthermore, the protrusion 11 only needs to be formed in the direction in which the beams are joined. That is, the joining member has protrusions 11 projecting outward on at least two surfaces, and the height positions at which the protrusions 11 are formed on at least two surfaces are different. Thus, the protrusion 11 does not need to be formed on at least one surface.

The embodiments of the present invention have been described above with reference to the attached figures, but the technical scope of the present invention is not limited to the embodiments described above. It will be clear to those skilled in the art that various modifications or alterations can be conceived within the scope of the technical idea described in the claims, and these will naturally also fall within the technical scope of the present invention.

For example, it goes without saying that the configurations in each of the embodiments described above can be combined with each other. Furthermore, although the joining member was constructed by combining multiple segmented pieces, it may also be manufactured as a single unit. Also, the surface opposite to the surface where the protrusion 11 is formed, and other parts other than the column joint 13, may be thinned. Furthermore, although the example shown illustrates all columns 6 being joined of the same size, the sizes of the columns joined above and below the joining member or diaphragm 9 may be varied, for example.

Furthermore, the height-direction length of the protrusion 11 (length in direction A in Figure 3) may be increased for each segmented piece, allowing the flange portion 19 to be joined at different height positions using a single protrusion 11. Alternatively, multiple protrusions 11 may be arranged at different height positions for a single segmented piece.

1, 1a...Column and beam joint structure 3, 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h...Joining members 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i, 5j, 5k, 5l, 5m, 5n, 5o , 5p...Divided piece 6...Column 7a, 7b...Beam 9...Diaphragm 11...Protrusion 13...Column joint 15...Beam joint 17...Side end face 19...Flange 21...Web part 23...Groove

Claims (8)

A connecting member for a beam to a column,
It is a roughly rectangular annular member having four faces corresponding to the sides of the column,
It has protrusions that project outward on at least two sides, to which the flange portion of the beam is joined,
The height positions at which the protrusions are formed on at least two surfaces are different.
Multiple segmented pieces are joined together to form a single unit.
A joining member characterized in that, on at least two surfaces, the protruding portion of one of the divided pieces and the side end surface of the other divided piece adjacent to it on one side are exposed, and the outer surface of the protruding portion and the side end surface are formed substantially on the same plane . The joining member according to claim 1 , characterized in that the four divided pieces are joined together to form a single unit. The joining member according to claim 1 or 2 , characterized in that the protrusion is not formed on at least one surface. A connecting member for a beam to a column,
It is a roughly rectangular annular member having four faces corresponding to the sides of the column,
It has protrusions that project outward on at least two sides, to which the flange portion of the beam is joined,
The height positions at which the protrusions are formed on at least two surfaces are different.
At least one surface does not have the aforementioned protrusion formed on it.
Two elongated segmented pieces positioned opposite each other, and two flat segmented pieces positioned between the elongated segmented pieces, are joined together to form a single unit.
A joining member characterized in that the protrusion is formed on the outer circumferential surface of the elongated segmented piece, and the protrusion is not formed on the flat segmented piece . A connecting member for a beam to a column,
It is a roughly rectangular annular member having four faces corresponding to the sides of the column,
It has protrusions that project outward on at least two sides, to which the flange portion of the beam is joined,
The height positions at which the protrusions are formed on at least two surfaces are different.
A joining member characterized in that a groove is formed on the surface where the protrusion is formed, in a direction perpendicular to the direction in which the protrusion is formed, into which the web of the beam is inserted . The joining member according to claim 5, characterized in that multiple divided pieces are joined together to form a single unit. The joining member according to claim 5 or 6 , characterized in that the protrusion is not formed on at least one surface. A joint structure between a column and a beam using a joint member according to any one of claims 1 to 7,
A column-beam joint structure characterized in that the jointing member is joined to the column, beams of different heights are arranged on different faces of the jointing member, and the upper and/or lower flange portions of the beams are joined to the protruding portion.