JP2021006691A - Joint structure of square steel pipe column - Google Patents

Abstract

To prevent a bolted part from decreasing in strength of a square steel pipe column than other parts.SOLUTION: A joint structure of a square steel pipe column includes a first flange provided at an end of a first square steel pipe column, a first clearance part provided at a corner part of the first square steel pipe column adjacent to the first flange, a second flange provided at an end of a second square steel pipe column, a second clearance part provided at a corner part of the second square steel pipe column adjacent to the second flange, a first auxiliary plate joined to the surface of the first square steel pipe column and provided adjacent to the first flange, a second auxiliary plate joined to the surface of the second square steel pipe column and provided adjacent to the second flange, and a first splice plate in contact with one of the surfaces of the first flange the second flange. The thickness of the first flange is larger than the thickness of the first square steel pipe column, and the thickness of the second flange is larger than the thickness of the second square steel pipe column.SELECTED DRAWING: Figure 1

Description

One embodiment of the present invention relates to a joint structure of a square steel pipe column used in a building.

Welding and bolt joining are used as methods for joining steel members at construction sites. Welded joints can ensure sufficient strength, but require a high degree of skill and working time, and quality and performance are also affected by the skill of the operator. On the other hand, bolt joining has the advantages that the construction period can be shortened and quality control is easy. For bolt joining, for example, a method of joining a steel pipe column and H-shaped steel and a method of joining steel pipe columns to each other are disclosed (see Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 5-179702 (Patent No. 312209) Japanese Unexamined Patent Publication No. 2004-293196 (Patent No. 4038449)

When bolting steel members, any member having an open cross-sectional shape such as H-shaped steel can be easily bolted. However, when a tubular member such as a square steel pipe column is bolted, there is a problem that the construction cannot be easily performed. Furthermore, it is required that the bolted portion does not lose its strength as compared with other portions of the square steel pipe column.

One of an object of the present invention is to provide a joint structure of a square steel pipe column for solving such a problem.

The joint structure of the square steel pipe column according to the embodiment of the present invention includes a first flange provided at one end of the first square steel pipe column and a corner portion of the first square steel pipe column adjacent to the first flange. A first gap provided in, a second flange provided at one end of a second square steel pipe column, and a second flange provided at a corner of a second square steel pipe column adjacent to the second flange. The second gap, the first auxiliary plate joined to the surface of the first square steel pipe column and adjacent to the first flange, and the first auxiliary plate joined to the surface of the second square steel pipe pillar and adjacent to the second flange. Includes two auxiliary plates and a first attachment plate in contact with one surface of each of the first and second flanges. The plate thickness of the first flange is thicker than the thickness of the first square steel pipe column, and the plate thickness of the second flange is thicker than the thickness of the second square steel pipe column. With one end of the first square steel pipe column and one end of the second square steel pipe column abutting against each other, an opening is formed between the first gap and the second gap, and the first square steel pipe column is formed. And the second square steel pipe column are bolted together using a first flange, a second flange, and a first attachment plate.

The joint structure of the square steel tube column according to the embodiment of the present invention includes a first flange provided at one end of the first square steel tube column and a corner portion of the first square steel tube column adjacent to the first flange. A first gap provided in, a second flange provided at one end of a second square steel pipe column, and a second flange provided at a corner of a second square steel pipe column adjacent to the second flange. The gap between the two, the first auxiliary plate joined to the first flange and the first square steel pipe column, and the second auxiliary plate joined to the second flange and the second square steel pipe pillar. Includes a first flange and a first appendage having a size that overlaps the second flange. With one end of the first square steel pipe column and one end of the second square steel pipe pillar abutting against each other, an opening is formed between the first gap portion and the second gap portion, and the first square steel pipe pillar is formed. And the second square steel pipe column are bolted together using a first flange, a second flange, a first auxiliary plate, a second auxiliary plate, and a first attachment plate.

According to the joint structure of the square steel pipe according to the embodiment of the present invention, the bolt joint of the square steel pipe column becomes easy. Further, according to the joint structure of the square steel pipe column according to the embodiment of the present invention, the strength of the bolted portion can be equal to or higher than that of the other portions of the square steel pipe column. ..

A perspective view of a joint structure of a square steel pipe column according to an embodiment of the present invention is shown, (A) shows a developed view, and (B) shows a bolt joint in a joint structure of two square steel pipe columns. The front view of the bolt joint part in the joint structure of the square steel pipe column which concerns on one Embodiment of this invention is shown. The cross-sectional structure of the bolt joint in the joint structure of the square steel pipe column shown in FIG. 2 is shown. The front view of the bolt joint part in the joint structure of the square steel pipe column which concerns on one Embodiment of this invention is shown. The cross-sectional structure of the bolt joint in the joint structure of the square steel pipe column shown in FIG. 4 is shown. The front view of the bolt joint part in the joint structure of the square steel pipe column which concerns on one Embodiment of this invention is shown. A perspective view of a joint structure of a square steel pipe column according to an embodiment of the present invention is shown, (A) shows a developed view, and (B) shows a bolt joint in a joint structure of two square steel pipe columns. The front view of the bolt joint part in the joint structure of the square steel pipe column which concerns on one Embodiment of this invention is shown. The cross-sectional structure of the bolt joint in the joint structure of the square steel pipe column shown in FIG. 8 is shown. A perspective view of a joint structure of a square steel pipe column according to an embodiment of the present invention is shown, (A) shows a developed view, and (B) shows a bolt joint in a joint structure of two square steel pipe columns. The front view of the bolt joint part in the joint structure of the square steel pipe column which concerns on one Embodiment of this invention is shown. The cross-sectional structure of the bolt joint in the joint structure of the square steel pipe column shown in FIG. 11 is shown. The front view of the bolt joint part in the joint structure of the square steel pipe column which concerns on one Embodiment of this invention is shown. The cross-sectional structure of the bolt joint in the joint structure of the square steel pipe column shown in FIG. 13 is shown. The front view of the bolt joint part in the joint structure of the square steel pipe column which concerns on one Embodiment of this invention is shown. A perspective view of a joint structure of a square steel pipe column according to an embodiment of the present invention is shown, (A) shows a developed view, and (B) shows a bolt joint portion in a joint structure of two square steel pipe columns. The front view of the bolt joint part in the joint structure of the square steel pipe column which concerns on one Embodiment of this invention is shown. The cross-sectional structure of the bolt joint in the joint structure of the square steel pipe column shown in FIG. 17 is shown.

Hereinafter, the contents of the embodiment of the present invention will be described with reference to the drawings and the like. However, the present invention includes many different aspects and is not construed as being limited to the contents of the embodiments exemplified below. In order to clarify the explanation, the drawings may schematically represent the width, thickness, shape, etc. of each part as compared with the actual embodiment, but this is merely an example and limits the content of the present invention. It's not something to do. Further, in the present specification, when a certain element described in a certain drawing and a certain element described in another drawing have the same or corresponding relationship, the same code (or the number described as the code) is used. A reference numeral (a, b, etc.) may be added later, and the repeated description may be omitted as appropriate. Further, the characters added with "first" and "second" for each element are convenient signs used to distinguish each element, and have no further meaning unless otherwise specified.

[First Embodiment]
The joint structure of the square steel pipe column according to the embodiment of the present invention has a structure in which the first square steel pipe column and the second square steel pipe column are joined by bolt joining. FIG. 1 (A) shows a developed view of a bolt joint in the joint structure of the square steel pipe column according to the present embodiment, and FIG. 1 (B) shows a perspective view of the bolt joint in the joint structure of the square steel pipe column according to the present embodiment. The figure is shown. In addition, in FIG. 1A, fastening members such as bolts and nuts are omitted.

FIG. 1A illustrates a case where the cross-sectional shape of the first square steel pipe column 102 and the second square steel pipe column 112 is rectangular. A first flange 104 is provided at one end of the first square steel pipe column 102 corresponding to each surface, and a second flange 114 is provided at one end of the second square steel pipe column 112 corresponding to each surface. Be done. That is, the first square steel pipe column 102 is provided with the first flange 104 at four locations so as to correspond to the four surfaces, and the second square steel pipe column 112 is provided with the second flange 104 so as to correspond to the four surfaces. Flange 114 is provided at four locations. The first flange 104 includes a plurality of first bolt holes 106 through which bolts are inserted, and the second flange 114 includes a plurality of second bolt holes 116 through which bolts are inserted.

The first square steel pipe column 102 and the second square steel pipe column 112 have substantially the same thickness and substantially the same cross-sectional shape. On the other hand, the thickness of the first flange 104 and the second flange 114 is different from the thickness of the first square steel pipe column 102 and the second square steel pipe column 112. In the present embodiment, the first flange 104 and the second flange 114 are thicker than the thickness of the first square steel pipe column 102 and the second square steel pipe column 112. The thickness of the first flange 104 is the area of the orthogonal cross section of the first flange 104 for four surfaces in the material axial direction as compared with the area of the orthogonal cross section of the first square steel pipe column 102 in the material axial direction. It is preferably larger than the total. The thickness of the second flange 114 is the same. For example, the plate thickness of the first flange 104 and the second flange 114 is 1.2 to 3 times, preferably 1 times, the thickness of the first square steel pipe column 102 and the second square steel pipe column 112. It has 5 to 2 times the thickness. Such a first square steel pipe column 102, a second square steel pipe column 112, a first flange 104, and a second flange 114 are formed of a steel material. For example, these members are made of structurally rolled steel.

The length of the first flange 104 and the second flange 114 (the length of the square steel pipe column in the material axis direction) may be a length that allows a plurality of bolts to be arranged in series, and the width is the first. It may be smaller than the outer diameter of the square steel pipe column 102 and the second square steel pipe column 112. Further, the widths of the first flange 104 and the second flange 114 are substantially equal so that when one end of the first square steel pipe column 102 and one end of the second square steel pipe column 112 are abutted against each other, they face each other. Have the same dimensions.

The first flange 104 is welded to one end of the first square steel pipe column 102, and the second flange 114 is welded to one end of the second square steel pipe column 112. In order to bolt-join the first flange 104 and the second flange 114, the first attachment plate 130 and the second attachment plate 140 are used. The first flange 104 and the second flange 114 are sandwiched between the first attachment plate 130 and the second attachment plate 140 and bolted. For example, the first attachment plate 130 is arranged outside the first square steel pipe column 102 and the second square steel pipe column 112, and the second attachment plate 140 is the first square steel pipe column 102 and the second square steel pipe. It is arranged inside the pillar 112.

The first attachment plate 130 has a third bolt hole 132 at a position corresponding to the first bolt hole 106 and a fourth bolt hole 134 at a position corresponding to the second bolt hole 116. The second attachment plate has a fifth bolt hole 142 at a position corresponding to the first bolt hole 106 and a sixth bolt hole 144 at a position corresponding to the second bolt hole 116. When one end of the first square steel pipe column 102 and one end of the second square steel pipe column 112 are butted against each other, the first attachment plate 130 and the second attachment plate 140 have a first flange 104 and a second flange. It has a size that overlaps with both of 114. The first attachment plate 130 and the second attachment plate 140 need only have a length (length in the material axis direction) that can overlap with the first flange 104 and the second flange 114. , The width does not necessarily have to be the same. For example, the first attachment plate 130 and the second attachment plate 140 may be divided into a plurality of parts in the width direction. Further, one of the first attachment plate 130 and the second attachment plate 140 may be omitted. For example, if only one of the first side plate 130 and the second side plate 140 can sufficiently secure the joint strength, the other side plate may be omitted.

The first attachment plate 130 and the second attachment plate 140 are made of a steel material like the first flange 104 and the second flange 114. The thickness of the first side plate 130 and the second side plate 140 may have substantially the same thickness as the thickness of the first square steel pipe column 102 and the second square steel pipe column 112. The thickness may be large in order to increase the strength of the bolt joint 100a. Further, the thickness of the first attachment plate 130 and the second attachment plate 140 is such that the thickness of the first flange 104 and the second flange 114 is thicker, so that the first square steel pipe column 102 and the second attachment plate 140 have a higher thickness. It can be made thinner than the thickness of the square steel pipe column 112.

The first square steel pipe column 102 is provided with a first auxiliary plate 105 so as to be continuous from the first flange 104, and the second square steel pipe column 112 is provided with a second so as to be continuous from the second flange 114. Auxiliary plate 115 is provided. The first auxiliary plate 105 has a plate thickness equal to or thicker than the difference between the thickness of the first flange 104 and the thickness of the first square steel pipe column 102. The second auxiliary plate 115 also has a plate thickness equal to or thicker than the difference between the thickness of the second flange 114 and the thickness of the second square steel pipe column 112. The first auxiliary plate 105 and the second auxiliary plate 115 are made of steel. The first auxiliary plate 105 is joined to the first square steel pipe column 102, and the second auxiliary plate 115 is joined to the second square steel pipe column 112 by welding.

The first square steel pipe column 102 has a first gap 108 at a corner adjacent to the first flange 104, and the second square steel pipe column 112 has a second at a corner adjacent to the second flange 114. Has a gap 118. As shown in FIG. 1 (A), the first gap 108 exists between two adjacent first flanges 104, and the second gap 118 is between two adjacent second flanges 114. Exists in. The first gap 108 is preferably provided at each corner of the first square steel pipe column 102, but may be provided at two diagonal corners, and at least one corner may be provided. It is required to be provided in. This also applies to the second gap 118. Then, when one end of each of the first square steel pipe column 102 and the second square steel pipe column 112 is abutted against each other, the first gap portion 108 and the second gap portion 118 are opposed to each other. Provided.

FIG. 1B shows a state in which the first square steel pipe column 102 and the second square steel pipe column 112 are bolted together. In the bolt joint portion 100a, the first attachment plate 130 and the second attachment plate 140 sandwich the first flange 104 and the second flange 114, and the first bolt hole 106, the third bolt hole 132, and The fifth bolt hole 142 communicates with the second bolt hole 116, the fourth bolt hole 134, and the sixth bolt hole 144 communicate with each other. Then, bolts are inserted into these bolt holes that communicate with each other and fastened with nuts.

FIG. 2 shows a front view of a bolt joint portion 100a in a joint structure of a square steel pipe column. The first flange 104 is welded to the first square steel pipe column 102, and the second flange 114 is welded to the second square steel pipe column 112. The first flange 104 and the first square steel pipe column 102 are welded so that the back surface side is flush with each other, and the second flange 114 and the second square steel pipe column 112 are welded so that the back surface side is flush with each other. Will be done. The first welded portion 126a is formed at the boundary portion between the first flange 104 and the first square steel pipe column 102 and the boundary portion between the second flange 114 and the second square steel pipe column 112. The first flange 104 is provided so as to project from the outer surface of the first square steel pipe column 102 by the difference in thickness, and the second flange 114 is provided so as to project from the outer surface of the second square steel pipe column 112 by the difference in thickness. Be done. The first welded portion 126a may be provided with a pad 121 on the back surface of the square steel pipe column.

The first auxiliary plate 105 is welded to the outer surface of the first square steel pipe column 102, and the second auxiliary plate 115 is welded to the outer surface of the second square steel pipe column 112. The second welded portion 126b is provided along the outer periphery of the first auxiliary plate 105 and the second auxiliary plate 115. Further, the first auxiliary plate 105 is welded to the first flange 104 and the first square steel pipe column 102 at the first welded portion 126a, and the second auxiliary plate 115 is second at the first welded portion 126a. It is welded to the flange 114 and the second square steel pipe column 112.

When the thickness of the first auxiliary plate 105 is substantially the same as the difference between the thickness of the first flange 104 and the thickness of the first square steel pipe column 102, the first flange 104 is the thickness of the first square steel pipe column 102. It can be aligned with the height protruding from the outer surface. Further, when the thickness of the first auxiliary plate 105 is thicker than the difference between the thickness of the first flange 104 and the thickness of the first square steel pipe column 102, it can be projected higher than the first flange 104. The same can be said for the thickness of the second auxiliary plate 115 in relation to the thickness of the second flange 114 and the second square steel pipe column 112. In this way, the flanges (first flange 104, second flange 114) of the auxiliary plates (first auxiliary plate 105, second auxiliary plate 115) are square steel pipe columns (first square steel pipe column 102, first By setting the height to be substantially the same as or higher than the height protruding from the square steel pipe column 112) of 2, in the region adjacent to the bolt joint 100a, the first square steel pipe column 102 and the second square steel pipe column 112 The thickness can be substantially increased with the first flange 104 and the second flange 114, the strength of the bolt joint portion 100a can be increased, and the flange can be stably joined to the square steel pipe column. ..

The dimensions of the first auxiliary plate 105 and the second auxiliary plate 115 in a plan view are not particularly limited, but are substantially the same as the length and width of the first flange 104 and the second flange 114, for example. It may have dimensions. In any case, the strength of the bolt joint portion 100a can be increased by joining the first auxiliary plate 105 to the first flange 104 and the first square steel pipe column 102.

FIG. 3 shows the cross-sectional structure of the bolt joint 100a when the section between A1 and B1 shown in FIG. 2 is viewed in cross section, and shows the schematic structure when the side of the first square steel pipe column 102 is viewed. Bolt joints 100a are formed on each surface of the first square steel pipe column 102. FIG. 3 shows the bolt joints 100a formed on each surface of the first square steel pipe column 102 in a clockwise direction with the first bolt joints 100a_1, the second bolt joints 100a_2, and the third bolt joints 100a_3. , 4th bolt joint 100a_4. In the first bolt joint 100a_1, the first flange 104 is sandwiched between the first attachment plate 130 and the second attachment plate 140. Then, the bolt 122 is inserted into the first bolt hole 10a, the third bolt hole 132, and the fifth bolt hole 142 and fastened by the nut 124. Since the first flange 104 has a plate thickness larger than the thickness of the first square steel pipe column 102, it protrudes from the outer surface. In the first bolt joint portion 100a_1, the first flange 104, the first attachment plate 130, and the second attachment plate 140 are bolted at a plurality of locations. Such a structure is the same for the second bolt joint portion 100a_2, the third bolt joint portion 100a_3, and the fourth bolt joint portion 100a_4.

In the first square steel pipe column 102, a first gap portion 108 is formed at a corner portion. The first gap 108 is a third bolt between the first bolt joint 100a_1 and the second bolt joint 100a_2, between the second bolt joint 100a_2 and the third bolt joint 100a_3. It is formed between the joint portion 100a_3 and the fourth bolt joint portion 100a_4, and between the fourth bolt joint portion 100a_4 and the first bolt joint portion 100a_1. FIG. 3 shows that the opening 120 is formed corresponding to the first gap 108. As shown in FIG. 1B, the opening 120 is in a state where one end of the first square steel pipe column 102 and one end of the second square steel pipe column 112 are butted and both are joined by a flange and a side plate. It is formed by connecting the first gap 108 and the second gap 118. The opening 120 eliminates the boundary between the inner space and the outer space of the first square steel pipe column 102 and the second square steel pipe column 112, and serves as a place for connecting the inner space and the outer space.

As shown in FIG. 1B, the widths of the first flange 104 and the second flange 114 and the widths of the first attachment plate 130 and the second attachment plate 140 are provided to be substantially the same. Alternatively, the widths of the first attachment plate 130 and the second attachment plate 140 are narrower than the widths of the first flange 104 and the second flange 114. Further, the length of the opening 120 along the material axis direction of the first square steel pipe column 102 and the second square steel pipe column 112 can be longer than the length of the first attachment plate 130 in the material axis direction. .. In other words, the length of each of the first attachment plate 130 and the second attachment plate 140 in the material axis direction can be shorter than the total length of the first flange 104 and the second flange 114. By having such a dimensional relationship between the first flange 104 and the second flange 114 and the first attachment plate 130 and the second attachment plate 140, the opening is maintained while maintaining the strength of the bolt joint portion 100a. It is possible to prevent the portion 120 from becoming smaller.

The joint structure of the square steel pipe column according to the present embodiment has an opening 120 in the bolt joint portion 100a, but the plate thickness of the first flange 104 and the second flange 114 is the first square steel pipe column 102. And by making it larger than the thickness of the second square steel pipe column 112, the strength of the bolt joint portion 100a can be increased. Further, since the bolt joint portion 100a has the opening 120, the widths of the first flange 104 and the second flange 114 are smaller than the widths of the first square steel pipe column 102 and the second square steel pipe column 112. When the thickness of the first flange 104 and the second flange 114 is made thicker than that of the steel pipe, the first square steel pipe column 102 and the second square steel pipe column 112 and the first flange 104 and the second flange 114 It is preferable to increase the strength at the interface. Therefore, at the ends of the first flange 104 and the second flange 114 protruding from the outer surfaces of the first square steel pipe column 102 and the second square steel pipe column 112, the first auxiliary plate 105 and the second By joining the auxiliary plates 115, the strength of the interface between the first square steel pipe column 102 and the second square steel pipe column 112 and the first flange 104 and the second flange 114 can be increased. Further, the stress transmitted from the first flange 104 and the second flange 114 is borne by the first auxiliary plate 105 and the second auxiliary plate 115 together with the first square steel pipe column 102 and the second square steel pipe column 112. Therefore, it is possible to reduce the stress concentration at the interface between the first square steel pipe column 102 and the second square steel pipe column 112 and the first flange 104 and the second flange 114, and the first square steel pipe can be reduced. The strength of the column 102 and the second square steel pipe column 112 and the entire bolt joint 110a between them can be increased.

The joint structure of the square steel pipe column according to the embodiment of the present invention can facilitate the construction of the bolt joint portion 100a by having the opening 120 corresponding to the corner portion of the square steel pipe column. As a result, when the operator joins the first square steel pipe column 102 and the second square steel pipe column 112, the operator inserts the bolt 122 into the bolt hole from the inside using the opening 120 at the construction site and bolts the joint. It becomes easy to form. The height of the opening 120 shall be about the same as the total length of the length of the first flange 104 (the length of the square steel pipe column in the material axis direction) and the length of the second flange 114 (same). The width of the opening 120 can be appropriately set according to the thickness of the square steel pipe column. Therefore, it is possible to provide an opening 120 having a size sufficient for the operator to insert a bolt, a tool, or the like into the inside of the square steel pipe column for work. In such a configuration, as described above, the plate thicknesses of the first flange 104 and the second flange 114 are made larger than the thickness of the first square steel pipe column 102 and the second square steel pipe column 112, and Since the first auxiliary plate 105 and the second auxiliary plate 115 are provided, the strength of the bolt joint portion 100a can be sufficiently ensured even if the opening 120 is provided.

Although the present embodiment shows a joint structure of a square steel pipe, one embodiment of the present invention is not limited to this embodiment, and can be similarly applied to a deformed steel pipe.

[Second Embodiment]
This embodiment shows a configuration in which the arrangement of the flange and the auxiliary plate is different from that of the first embodiment. In the following description, the parts different from the first embodiment will be mainly described.

FIG. 4 shows a front view of the bolt joint portion 100a in the joint structure of the square steel pipe column according to the present embodiment. The joint structure of the square steel pipe column according to the present embodiment is different from the first embodiment in the mounting position of the flange and the auxiliary plate to the square steel pipe column. The first flange 104 is provided flush with the outer surface of the first square steel pipe column, and the second flange 114 is provided flush with the outer surface of the second square steel pipe column 112. Further, the first auxiliary plate 105 is provided on the inner surface of the first square steel pipe column 102 adjacent to the first flange 104, and the second auxiliary plate 115 is adjacent to the second flange 114. It is provided on the inner surface of the square steel pipe column 112. The first welded portion 126a may be provided with a pad 121 inside the square steel pipe column.

The first flange 104 is welded to the first square steel pipe column 102, and the second flange 114 is welded to the second square steel pipe column 112. In these first welded portions 126a, pads (not shown) may be provided on the outer surfaces of the first square steel pipe column 102 and the second square steel pipe column 112. The first auxiliary plate 105 is welded to the inner surface of the first square steel pipe column 102, and the second auxiliary plate 115 is welded to the inner surface of the second square steel pipe column 112. Further, the first auxiliary plate 105 is welded to the first flange 104 and the first square steel pipe column 102 at the first welded portion 126a, and the second auxiliary plate 115 is formed at the first welded portion 126a. It is welded to the flange 114 of No. 2 and the second square steel pipe column 112. Since such welding is performed before joining the first square steel pipe column 102 and the second square steel pipe column 112, the work can be easily performed.

FIG. 5 shows a cross-sectional structure of the bolt joint portion 100a when the section between A2-B2 shown in FIG. 4 is viewed in cross section, and shows a schematic structure when the side of the first square steel pipe column 102 is viewed. In the first bolt joint portion 100a_1, the first flange 104 is sandwiched between the first attachment plate 130 and the second attachment plate 140 and bolted. Since the first flange 104 is provided flush with the outer surface of the first square steel pipe column 102, it is provided so as to project inward. Even in such a configuration, the first flange 104 forming the first bolt joint portion 100a_1 has openings 120 on both sides, so that the second bolt joint portion 100a_2 and the fourth bolt joint portion adjacent to each other have openings 120. It can be arranged so as not to interfere with 100a_4.

According to the present embodiment, since the first flange 104 and the second flange 114 are provided so as to be flush with the outer surfaces of the first square steel pipe column 102 and the second square steel pipe column 112, the outside The structure can be such that it does not protrude. Further, since it is provided on the inner surface of the first auxiliary plate 105 and the second auxiliary plate 115, it can be prevented from being exposed to the outside. With such a configuration, the structure of the bolt joint portion 100a can be made inconspicuous while increasing the strength of the joint structure of the square steel pipe column as in the first embodiment.

[Third Embodiment]
This embodiment shows an aspect in which the configuration of the auxiliary plate is different from the joint structure of the square steel pipe column according to the first embodiment. In the following, the parts different from the first embodiment will be described.

FIG. 6 shows a front view of a bolt joint portion 100a of a joint structure of a square steel pipe column according to the present embodiment. The first auxiliary plate 105 is joined to the first square steel pipe column 102, and the second auxiliary plate 115 is joined to the second square steel pipe column 112. The first auxiliary plate 105 and the second auxiliary plate 115 have a notch 128 in a plan view. That is, the first auxiliary plate 105 and the second auxiliary plate 115 are not simple rectangular flat plates, but have a shape including a notch 128 in a part of the rectangular flat plate.

The first auxiliary plate 105 is welded along the outer peripheral portion on the outer surface of the first square steel pipe column 102, and the second auxiliary plate 115 is welded along the outer peripheral portion on the outer surface of the second square steel pipe column 112. Will be done. By having the notch 128, the strength of the welded joint of the first auxiliary plate 105 to the first square steel pipe column 102 and the strength of the welded joint of the second auxiliary plate 115 to the second square steel pipe column 112 can be obtained. It is possible to secure the length of the welding region required for securing by the first auxiliary plate 105 and the second auxiliary plate 115 having a smaller area. The shape of the notch 128 with respect to the first auxiliary plate 105 and the second auxiliary plate 115 is arbitrary, and in addition to the structure shown in the figure, a plurality of notches 128 may be provided.

According to the present embodiment, the strength of the bolt joint can be further increased by providing the notch 128 in the auxiliary plate. The configuration of the notch 128 with respect to such an auxiliary plate can be applied to one or both of the first auxiliary plate 105 and the second auxiliary plate 115. In this embodiment, the structure of the first embodiment has been described, but the configuration of the auxiliary plate according to the present embodiment is also applied to the joint structure of the square steel pipe column according to the second embodiment. Can be done.

[Fourth Embodiment]
This embodiment shows a structure in which a web is added to the joint structure of the square steel pipe column shown in the first embodiment.

FIG. 7 (A) shows a developed view of a bolt joint in the joint structure of the square steel pipe column according to the present embodiment, and FIG. 7 (B) shows a perspective view of the bolt joint in the joint structure of the square steel pipe column. In the following, the parts different from the first embodiment will be described.

As shown in FIG. 7A, a first web 150 connected to the first flange 104 is provided inside the first square steel pipe column 102. Similarly, the second square steel pipe column 112 is provided with a second web 160 connected to the second flange 114. The first web 150 and the second web 160 have a substantially cross-shaped cross-sectional shape and are provided so as to be connected to each of the flanges provided corresponding to each surface of the square steel pipe column. As shown in FIG. 7B, the first web 150 and the second web 160 are provided so as not to block the opening 120 at the bolt joint 100b.

FIG. 8 shows a front view of the bolt joint portion 100b in the joint structure of the square steel pipe column according to the present embodiment. The first web 150 is provided in contact with each of the first flanges 104, and the second web 160 is provided in contact with each of the second flanges 114. The length of the first web 150 and the second web 160 in the material axial direction is arbitrary. For example, as shown in FIG. 8, the first web 150 has a length that allows contact with the first flange 104 and the first square steel pipe column 102, and the second web 160 has a second flange 114. And may have a length that can be in contact with the second square steel pipe column 112. Since the first web 150 and the second web 160 have such a length, even when the plate thickness of the first flange 104 and the second flange 114 is increased, the first square steel pipe column 102 And it can be stably attached to the second square steel pipe column 112.

FIG. 9 shows the cross-sectional structure of the bolt joint portion 100b when the section between A3-B3 shown in FIG. 8 is viewed in cross section, and shows the schematic structure when the side of the first square steel pipe column 102 is viewed. The first web 150 may be formed by combining plate-shaped members so that the cross-sectional shape has a substantially cross shape. With such a shape, the first web 150 is connected to each of the first flanges 104 arranged corresponding to each side surface of the first square steel pipe column 102. In this case, the second attachment plate 140 arranged inside the first flange 104 may be divided into a plurality of parts so as not to interfere with the first web 150. By preventing the position where the first web 150 is connected to the first flange 104 from overlapping the bolt holes, the second attachment plate 140 can be attached to the first flange 104 and bolted securely. can do.

The connection between the first web 150 and the first flange 104 and the connection between the second web 160 and the second flange 114 can be performed by welding. By welding the first web 150 to the first flange 104, it acts on the first bolt joint 100b_1, the second bolt joint 100b_2, the third bolt joint 100b_3, and the fourth bolt joint 100b_4. The force to do can be dispersed. Thereby, for example, the resistance to the shearing force acting on the bolt joint 100b can be increased. Such a configuration is the same for the second web 160b in the second square steel pipe column 112.

Although not shown, a supplementary plate extending over the first web 150 and the second web 160 may be provided and the webs may be bolted to each other. With such a configuration, the strength of the bolt joint portion 100b can be further increased.

The joint structure of the square steel pipe column according to the present embodiment has the same configuration as that of the first embodiment except that a web is provided. Therefore, in addition to obtaining the same effect as that of the first embodiment, the strength of the bolt joint portion 100b can be further increased by the action of the web as described above. The structure of the web according to the present embodiment can be appropriately combined with the joint structure of the square steel pipe column in the second embodiment and the third embodiment.

[Fifth Embodiment]
The present embodiment shows an embodiment in which the plate thickness of the flange forming the bolt joint can be substantially increased by a structure different from that of the first embodiment. FIG. 10 (A) shows a developed view of a bolt joint in the joint structure of the square steel pipe column according to the present embodiment, and FIG. 10 (B) shows a perspective view of the bolt joint in the joint structure of the square steel pipe column according to the present embodiment. The figure is shown. In FIG. 10A, fastening members such as bolts and nuts are omitted. In the following description, the parts different from the first embodiment will be mainly described.

As shown in FIG. 10A, a first flange 104 is provided at one end of the first square steel pipe column 102, and a second flange 114 is provided at one end of the second square steel pipe column 112. The first flange 104 is formed of the same member continuous from the first square steel pipe column 102, and the second flange 114 is formed of the same member continuous from the second square steel pipe column 112. For example, the first flange 104 is formed by notching the end of the first square steel pipe column 102, and the second flange 114 is formed by notching the end of the second square steel pipe column 112. .. As a result, a first notch 109 is formed at the corner of the first square steel pipe column 102, and a second notch 119 is formed at the corner of the second square steel pipe column 112. The thickness of the first flange 104 is the same as the thickness of the first square steel pipe column 102, and the thickness of the second flange 114 has the thickness of the second square steel pipe column 112.

The first square steel pipe column 102 is provided with the first auxiliary plate 105, and the second square steel pipe column 112 is provided with the second auxiliary plate 115. The first auxiliary plate 105 is provided so as to overlap the outer surfaces of the first flange 104 and the first square steel pipe column 102, and the second auxiliary plate 115 is provided so as to overlap the second flange 114 and the second square steel pipe column 112. It is provided so as to overlap the outer surface of the. The first auxiliary plate 105 has a size that overlaps with the first flange 104 and further overlaps with the outer surface of the first square steel pipe column 102 continuously from the first flange 104. Similarly, the second auxiliary plate 115 has a size that overlaps with the second flange 114 and further overlaps with the outer surface of the second square steel pipe column 112 continuously from the second flange 114. The area where the first auxiliary plate 105 overlaps the outer surface of the first square steel pipe column 102 may be the same as or larger than the area where the first flange 104 overlaps. Similarly, the area where the second auxiliary plate 115 overlaps the outer surface of the second square steel pipe column 112 may be the same as or larger than the area where the second flange 114 overlaps.

The plate thickness of the first auxiliary plate 105 may be the same as or thicker than the thickness of the first square steel pipe column 102, and the plate thickness of the second auxiliary plate 115 is the same as the thickness of the second square steel pipe column 112. It may be thicker than or thicker. The first auxiliary plate 105 is joined to the first flange 104 and the first square steel tube column 102 by welding, and the second auxiliary plate 115 is joined to the second flange 114 and the second square steel tube column 112 by welding. Will be done. With such a configuration, the first flange 104 has a structure equivalent to that in which the thickness is increased by the thickness of the first auxiliary plate 105, and the second flange 114 is the thickness of the second auxiliary plate 115. It has a structure equivalent to that of a flange with an increased thickness. Further, the first square steel pipe column 102 has a structure equivalent to that in which the thickness is increased by the thickness of the first auxiliary plate 105 in the region adjacent to the first flange 104, and the second square steel pipe The pillar 112 has a structure equivalent to that in the region adjacent to the second flange 114, in which the thickness is increased by the thickness of the second auxiliary plate 115.

The first auxiliary plate 105 and the second auxiliary plate 115 need only have a continuous length from the portion where the flange is formed to the main body portion of the square steel pipe column in the material axis direction, and the width direction ( In the direction intersecting the material axis direction), it may be divided into a plurality of parts.

The first auxiliary plate 105 has a seventh bolt hole 152 at a position overlapping the first bolt hole 106 provided in the first flange 104, and the second auxiliary plate 115 is provided in the second flange 114. An eighth bolt hole 162 is provided at a position overlapping the second bolt hole 116. The first flange 104 and the second flange 114 are bolted to each other by the first attachment plate 130 and the second attachment plate 140, as in the first embodiment, but in the present embodiment, the first flange 104 and the second flange 114 are bolted together. The difference is that the first auxiliary plate 105 and the second auxiliary plate 115 are interposed between the attachment plate 130 of 1 and the second attachment plate 140.

As shown in FIG. 10 (A), the first notch 109 is provided to divide the two adjacent first flanges 104, and the second notch 119 is the two adjacent second. It is provided so as to divide the flange 114. The first notch 109 is preferably provided at each corner of the first square steel pipe column 102, but may be provided at two diagonal corners, and may be provided at at least one corner. It is required to be provided. This also applies to the second notch portion 119.

The first flange 104 and the second flange 114 are each square steel pipe column so that when one end of the first square steel pipe column 102 and one end of the second square steel pipe column 112 are butted against each other, they face each other. Have substantially the same width at the same cross-sectional position. Further, when one end of the first square steel pipe column 102 and the second square steel pipe column 112 are butted against each other, the first notch portion 109 and the second notch portion 119 face each other. It is provided in the section.

FIG. 10B shows a state in which the first square steel pipe column 102 and the second square steel pipe column 112 are bolted together. In the bolt joint portion 100c, the first attachment plate 130 and the second attachment plate 140 sandwich the first flange 104, the second flange 114, the first auxiliary plate 105, and the second auxiliary plate 115. , 1st bolt hole 106, 3rd bolt hole 132, 5th bolt hole 142 and 7th bolt hole 152 communicate with each other, and 2nd bolt hole 116, 4th bolt hole 134, 6th bolt. The holes 144 and the eighth bolt holes 162 are arranged so as to communicate with each other. Then, bolts are inserted into these bolt holes that communicate with each other and fastened with nuts.

FIG. 11 shows a front view of the bolt joint portion 100c. The first flange 104 has a shape continuous from the first square steel pipe column 102, and the second flange 114 has a shape continuous from the second square steel pipe column 112. The first auxiliary plate 105 is provided so as to overlap the outer surfaces of the first flange 104 and the first square steel pipe column 102, and the second auxiliary plate 115 is provided so as to overlap the second flange 114 and the second square steel pipe column 112. It is provided so as to overlap the outer surface of the.

The first auxiliary plate 105 has a second welded portion 126b welded along the outer peripheral portion in a region overlapping the first square steel pipe column 102. The second auxiliary plate 115 has a second welded portion 126b whose outer peripheral portion is welded in a region overlapping with the second square steel pipe column 112. The thickness of the first flange 104 and the first square steel pipe column 102 becomes substantially the same as those in which the thickness of the portion is substantially increased by welding with the first auxiliary plate 105, and the second flange 114 and the first square steel pipe column 102 The thickness of the second square steel pipe column 112 becomes substantially the same as that of the portion which is thickened by welding with the second auxiliary plate 115. This makes it possible to increase the rigidity of the portion forming the bolt joint portion 100c.

FIG. 12 shows the cross-sectional structure of the bolt joint portion 100c when the section between A4-B4 shown in FIG. 11 is viewed in cross section, and shows the schematic structure when the side of the first square steel pipe column 102 is viewed. In the first bolt joint 100c_1, the first flange 104 and the first auxiliary plate 105 are sandwiched between the first attachment plate 130 and the second attachment plate 140. Bolts 122 are inserted into the first bolt holes 106, the third bolt holes 132, the fifth bolt holes 142, and the seventh bolt holes 152 and fastened by nuts 124. The first auxiliary plate 105 is provided so as to project from the outer surface of the first square steel pipe column 102. In the bolt joint 100c, the first flange 104 and the first auxiliary plate 105 are sandwiched between the first attachment plate 130 and the second attachment plate 140 and bolted at a plurality of locations. Such a structure is the same for the second bolt joint portion 100c_2, the third bolt joint portion 100c_3, and the fourth bolt joint portion 100c_4.

The first square steel pipe column 102 has an opening 120 corresponding to the corner portion corresponding to the first notch portion 109. As shown in FIG. 10B, the opening 120 is formed by abutting one end of the first square steel pipe column 102 and one end of the second square steel pipe column 112 and joining them with a flange and a side plate. It is formed by connecting the first gap 108 and the second gap 118. These openings 120 eliminate the boundary between the inner space and the outer space of the first square steel pipe column 102 and the second square steel pipe column 112, and serve as a place for connecting the inner space and the outer space.

The joint structure of the square steel pipe column according to the present embodiment includes a first auxiliary plate 105 continuous from the first flange 104 to the outer surface of the first square steel pipe column 102, and a second flange 114 to a second square shape. By having the second auxiliary plate 115 continuous to the outer surface of the steel pipe column 112, the thickness of the bolt joint portion 100c can be increased and the strength can be increased. Further, by having the opening 120 corresponding to the corner portion of the square steel pipe column, the bolt joint portion 100c can be easily constructed as in the first embodiment. In such a configuration, since the plate thickness of the first flange 104 and the second flange 114 is substantially thicker than the thickness of the first square steel pipe column 102 and the second square steel pipe column 112, the opening 120 is formed. Even if it is provided, the strength of the bolt joint portion 100c can be sufficiently secured.

[Sixth Embodiment]
The present embodiment shows a configuration in which the arrangement of the flange and the auxiliary plate is different from the joint structure of the square steel pipe column according to the fifth embodiment. In the following description, the parts different from the fifth embodiment will be mainly described.

FIG. 13 shows a front view of the bolt joint portion 100c of the joint structure of the square steel pipe column according to the present embodiment. In the present embodiment, the bolt joint portion 100c is different from the fifth embodiment in the mounting position of the auxiliary plate to the square steel pipe column. The first auxiliary plate 105 is provided on the inner surface of the first flange 104 and the first square steel pipe column 102, and the second auxiliary plate 115 is the inner surface of the second flange 114 and the second square steel pipe column 112. It is provided in.

The first auxiliary plate 105 is joined to the first square steel pipe column 102 and the first flange by welding. For example, the first auxiliary plate 105 is welded to the inner surface of the first square steel pipe column 102 at the second welded portion 126b formed along the outer periphery thereof. Further, the second auxiliary plate 115 is welded to the inner surface of the second square steel pipe column 112 at the second welded portion 126b formed along the outer periphery thereof. Since such welding is performed before joining the first square steel pipe column 102 and the second square steel pipe column 112, the work can be easily performed.

FIG. 14 shows the cross-sectional structure of the bolt joint 100c when the section between A4-B4 shown in FIG. 13 is viewed in cross section, and shows the schematic structure when the side of the first square steel pipe column 102 is viewed. At the first bolt joint 100c_1, the first flange 104 and the first auxiliary plate 105 are bolted while being sandwiched between the first attachment plate 130 and the second attachment plate 140. The first auxiliary plate 105 is provided so as to project inside the first square steel pipe column 102. Even in such a configuration, the first flange 104 forming the first bolt joint portion 100c_1 is adjacent to each other by having openings 120 (first opening 120a, fourth opening 120b) on both sides. It can be arranged so as not to interfere with the second bolt joint portion 100c_2 and the fourth bolt joint portion 100c_4.

The joint structure of the square steel pipe column according to the present embodiment has the other configurations except that the arrangement of the first auxiliary plate 105 and the second auxiliary plate 115 is different from the configuration according to the fifth embodiment. The same is true. Therefore, the joint structure of the square steel pipe column according to the present embodiment can obtain the same effect as that in the fifth embodiment. Further, in the present embodiment, since the first auxiliary plate 105 and the second auxiliary plate 115 are provided inside the square steel pipe column, these members can be prevented from being exposed to the outside. With such a configuration, it is possible to increase the strength of the bolt joint portion 100c as in the fifth embodiment, but to make the complicated structure of the bolt joint portion 100c inconspicuous.

[7th Embodiment]
This embodiment shows an aspect in which the configuration of the auxiliary plate is different from the joint structure of the square steel pipe column according to the fifth embodiment. Hereinafter, the parts different from the fifth embodiment will be described.

FIG. 15 shows a front view of a bolt joint portion 100c of a joint structure of a square steel pipe column according to the present embodiment. The first auxiliary plate 105 is joined to the first flange 104 and the first square steel pipe column 102, and the second auxiliary plate 115 is joined to the second flange 114 and the second square steel pipe column 112. The first auxiliary plate 105 and the second auxiliary plate 115 have a notch 128 in a plan view.

The configuration of the notch 128 provided in the first auxiliary plate 105 and the second auxiliary plate 115 is the same as that in the third embodiment. Thereby, it is necessary to secure the strength of the welded joint of the first auxiliary plate 105 to the first square steel pipe column 102 and the strength of the welded joint of the second auxiliary plate 115 to the second square steel pipe column 112. The length of the welded region can be secured even when the area where the first auxiliary plate 105 and the second auxiliary plate 115 overlap with the first steel pipe column 102 and the second steel pipe column 112, respectively, is reduced. ..

According to the present embodiment, the strength of the bolt joint portion 100c can be further increased by providing the notch portion 128 in one or both of the first auxiliary plate 105 and the second auxiliary plate 115. The structure of the auxiliary plate in the present embodiment can also be applied to the joint structure of the square steel pipe column according to the sixth embodiment.

[8th Embodiment]
This embodiment shows a configuration in which a web is added to the joint structure of the square steel pipe column shown in the fifth embodiment.

FIG. 16A shows a developed view of a bolt joint in a square steel pipe column according to the present embodiment, and FIG. 16B shows a perspective view of a bolt joint in a square steel pipe column. Hereinafter, the parts different from the fifth embodiment will be described.

As shown in FIG. 16A, a first web 150 connected to the first flange 104 is provided inside the first square steel pipe column 102, and a first web 150 is provided inside the second square steel pipe column 112. A second web 160 connected to the flange 114 of the second is provided. The first web 150 and the second web 160 have a substantially cross-shaped cross-sectional shape and are provided so as to be connected to each of the flanges provided corresponding to each surface of the square steel pipe column. As shown in FIG. 16B, the first web 150 and the second web 160 are provided so as not to block the opening 120 at the bolt joint 100d.

FIG. 17 shows a front view of the bolt joint portion 100d. The first web 150 is provided in contact with each of the first flanges 104, and the second web 160 is provided in contact with each of the second flanges 114. The length of the first web 150 and the second web 160 in the material axial direction is arbitrary. For example, as shown in FIG. 8, the first web 150 has a length capable of contacting the first flange 104 and the first square steel pipe column 102, and the second web 160 has a second flange 114. And may have a length that can be in contact with the second square steel pipe column 112. Since the first web 150 and the second web 160 have such a length, even when the plate thickness of the first flange 104 and the second flange 114 is increased, the first square steel pipe column 102 And it can be attached to the second square steel pipe column 112 in a stable state.

FIG. 18 shows a cross-sectional structure of the bolt joint portion 100d when the section between A5-B5 shown in FIG. 8 is viewed in cross section, and shows a schematic structure when the side of the first square steel pipe column 102 is viewed. The first web 150 can be formed of a plate-shaped member, and is connected to each of the first flanges 104 by having a substantially cross-shaped cross section thereof. The second attachment plate 140 arranged inside the first flange 104 may be divided into a plurality of parts so as not to interfere with the first web 150. By preventing the position where the first web 150 is connected to the first flange 104 from overlapping the bolt holes, the second attachment plate 140 can be attached to the first flange 104 and bolted securely. can do.

The connection between the first web 150 and the first flange 104 and the connection between the second web 160 and the second flange 114 can be made by welding. By welding the first web 150 to the first flange 104, the machine of the first bolt joint 100b_1, the second bolt joint 100d_2, the third bolt joint 100d_3, and the fourth bolt joint 100d_4. Strength can be increased. For example, the resistance to the shearing force acting on the bolt joint 100d can be increased. Such a configuration is the same for the second web 160b in the second square steel pipe column 112.

Although not shown, a supplementary plate extending over the first web 150 and the second web 160 may be provided and the webs may be bolted to each other. With such a configuration, the strength of the bolt joint portion 100d can be further increased.

The joint structure of the square steel pipe column according to the present embodiment has the same configuration as that of the fifth embodiment except that the web is provided. Therefore, in addition to obtaining the same effect as that of the fifth embodiment, the flange can be attached to the steel pipe column in a stable state by the action of the web as described above, and the strength of the bolt joint can be further increased. .. The structure of the web according to the present embodiment can be appropriately combined with the joint structure of the square steel pipe column in the sixth embodiment and the seventh embodiment.

100 ... Bolt joint, 102 ... 1st square steel pipe column, 104 ... 1st flange, 105 ... 1st auxiliary plate, 106 ... 1st bolt hole, 108. .. 1st gap, 109 ... 1st notch, 110 ... 2nd gap, 112 ... 2nd square steel bolt, 114 ... 2nd flange, 115 ... second auxiliary plate, 116 ... second bolt hole, 118 ... second gap, 119 ... second notch, 120 ... opening, 121 ...・ Pad, 122 ・ ・ ・ bolt, 124 ・ ・ ・ nut, 126 ・ ・ ・ welded part, 128 ・ ・ ・ notch part, 127 ・ ・ ・ opening, 130 ・ ・ ・ first attachment plate, 132 ... 3rd bolt hole, 134 ... 4th bolt hole, 140 ... 2nd attachment plate, 142 ... 5th bolt hole, 144 ... 6th bolt hole, 150 ... .. 1st web, 152 ... 7th bolt hole, 160 ... 2nd web, 162 ... 8th bolt hole

Claims (17)

A first flange provided at one end of the first square steel pipe column, and
A first gap provided at a corner of the first square steel pipe column adjacent to the first flange, and a first gap.
A second flange provided at one end of the second square steel pipe column, and
A second gap provided at a corner of the second square steel pipe column adjacent to the second flange, and a second gap.
A first auxiliary plate joined to the surface of the first square steel pipe column and adjacent to the first flange,
A second auxiliary plate joined to the surface of the second square steel pipe column and adjacent to the second flange,
Includes a first attachment plate that is in contact with one surface of each of the first flange and the second flange.
The plate thickness of the first flange is thicker than the thickness of the first square steel pipe column, and the plate thickness of the second flange is thicker than the thickness of the second square steel pipe column.
In a state where one end of the first square steel pipe column and one end of the second square steel pipe column are butted against each other.
An opening is formed between the first gap and the second gap.
The first square steel tube column and the second square steel tube column are joints of the square steel tube column which are bolted together using the first flange, the second flange, and the first attachment plate. Construction. The first flange is provided flush with the inner surface of the first square steel pipe column and protrudes from the outer surface of the first square steel pipe column, and the first auxiliary plate is the first square steel pipe column. Joined to the outer surface of the steel pipe column,
The second flange is provided flush with the inner surface of the second square steel pipe column and projects from the outer surface of the second square steel pipe column, and the second auxiliary plate is the second square steel pipe column. The joint structure of a square steel pipe column according to claim 1, which is joined to the outer surface of the steel pipe column. The first auxiliary plate has a plate thickness substantially equal to or greater than the height at which the first flange projects from the outer surface of the first square steel pipe column.
The joint of the square steel pipe column according to claim 2, wherein the second auxiliary plate has a plate thickness substantially equal to or larger than the height at which the second flange projects from the outer surface of the second square steel pipe column. Construction. The first flange is provided flush with the outer surface of the first square steel pipe column and projects from the inner surface of the first square steel pipe column, and the first auxiliary plate is the first square steel pipe column. Joined to the inner surface of the steel pipe column,
The second flange is provided flush with the outer surface of the second square steel pipe column and projects from the inner surface of the second square steel pipe column, and the second auxiliary plate is the second square steel pipe column. The joint structure of a square steel pipe column according to claim 1, which is joined to the inner surface of the steel pipe column. The first auxiliary plate has a plate thickness substantially equal to or greater than the height at which the first flange projects from the inner surface of the first square steel pipe column.
The joint of the square steel pipe column according to claim 4, wherein the second auxiliary plate has a plate thickness substantially equal to or larger than the height at which the second flange projects from the inner surface of the second square steel pipe column. Construction. The invention according to any one of claims 1 to 5, wherein the first flange is welded to the first square steel pipe column, and the second flange is welded to the second square steel pipe column. Joint structure of square steel pipe columns. The joint structure of a square steel pipe column according to any one of claims 1 to 6, wherein at least one of the first auxiliary plate and the second auxiliary plate has a notch in a plan view. A first web provided inside the first square steel pipe column and connected to the first flange,
The joint structure of a square steel pipe column according to any one of claims 1 to 7, further comprising a second web provided inside the second square steel pipe column and connected to the second flange. .. The joint structure of a square steel pipe column according to any one of claims 1 to 8, wherein the second attachment plate is provided on the opposite surface of the first attachment plate. A first flange provided at one end of the first square steel pipe column, and
A first gap provided at a corner of the first square steel pipe column adjacent to the first flange, and a first gap.
A second flange provided at one end of the second square steel pipe column, and
A second gap provided at a corner of the second square steel pipe column adjacent to the second flange, and a second gap.
A first auxiliary plate joined to the first flange and the first square steel pipe column,
A second auxiliary plate joined to the second flange and the second square steel pipe column, and
Includes a first flange and a first appendage having a size that overlaps the second flange.
In a state where one end of the first square steel pipe column and one end of the second square steel pipe column are butted against each other.
An opening is formed between the first gap and the second gap.
The first square steel pipe column and the second square steel pipe column are the first flange, the second flange, the first auxiliary plate, the second auxiliary plate, and the first attachment. Joint structure of square steel pipe columns bolted using plates. The first auxiliary plate is welded to the side surface of the first flange.
The joint structure of a square steel pipe column according to claim 10, wherein the second auxiliary plate is welded to the side surface of the second flange. The first auxiliary plate is provided on the outer surface of the first flange and the first square steel pipe column.
The joint structure of the square steel pipe column according to claim 10 or 11, wherein the second auxiliary plate is provided on the outer surface of the second flange and the second square steel pipe column. The first auxiliary plate is provided on the inner surface of the first flange and the first square steel pipe column.
The joint structure of the square steel pipe column according to claim 10 or 11, wherein the second auxiliary plate is provided on the inner surface of the second flange and the second square steel pipe column. The thickness of the first auxiliary plate is the same as or larger than the thickness of the first square steel pipe column, and the thickness of the second auxiliary plate is the same as or larger than the thickness of the second square steel pipe column. Item 5. The joint structure of the square steel pipe column according to any one of Items 10 to 13. The first auxiliary plate has a notch in a portion overlapping the first square steel pipe column.
The joint structure of a square steel pipe column according to any one of claims 10 to 14, wherein the second auxiliary plate has a notch in a portion overlapping the second square steel pipe column. A first web provided inside the first square steel pipe column and connected to the first flange,
The joint structure of a square steel pipe column according to any one of claims 10 to 15, further comprising a second web provided inside the second square steel pipe column and connected to the second flange. .. The joint structure of a square steel pipe column according to any one of claims 10 to 16, wherein the second attachment plate is provided on the opposite surface of the first attachment plate.

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