JP7340435B2 - Steel pipe column joint structure - Google Patents

Description

One embodiment of the present invention relates to a joint structure for steel pipe columns used in buildings.

At building construction sites, welding and bolting are used as methods for joining steel frame members. Although welding joints can in principle ensure sufficient strength, they require a high level of skill and work time, and the strength of the joints is influenced by the skill of the worker. On the other hand, bolted joints have the advantage of being able to shorten the construction period, being less affected by the skill of the worker, and facilitating quality control. There are various methods of bolt joining, and for example, a method of joining a steel pipe column and an H-shaped steel, and a method of joining steel pipe columns to each other are disclosed (see Patent Documents 1 and 2).

JP-A-5-179702 (Patent No. 3146209) JP2004-293196A (Patent No. 4038449)

When joining steel frame members with bolts, it is possible to easily bolt-join members with an open cross-sectional shape, such as H-shaped steel. However, when connecting tubular members such as square steel pipe columns with bolts, there is a problem in that construction is not easy because they have a closed cross-sectional shape. It is also possible to process a portion of the steel pipe column to facilitate bolt joint construction, but there is a concern that this may reduce the strength of the joint.

One of the objects of the present invention is to provide a joint structure for steel pipe columns to solve such problems.

A joint structure for a steel pipe column according to an embodiment of the present invention includes a first diaphragm provided at one end of a first steel pipe column, and a flange surface arranged parallel to the material axis direction of the first steel pipe column, A first L-shaped flange and a second L-shaped flange joined to the surface of the first diaphragm, a second diaphragm provided at one end of the second steel pipe column, and a material axis of the second steel pipe column. A third L-shaped flange and a fourth L-shaped flange whose flange surfaces are arranged parallel to the direction and are joined to the surface of the second diaphragm, and a first splint and a second splint. . The first steel pipe column and the second steel pipe column are arranged vertically, the first L-shaped flange and the second L-shaped flange are arranged apart from each other, and the third L-shaped flange and the fourth The first L-shaped flange and the third L-shaped flange are bolted together via the first splint, and the second L-shaped flange and the fourth L-shaped flange are spaced apart from each other. The shaped flange is bolted via a second splint.

A joint structure for a steel pipe column according to an embodiment of the present invention includes a first diaphragm provided at one end of a first steel pipe column, and a flange surface arranged parallel to the material axis direction of the first steel pipe column, A first L-shaped flange and a second L-shaped flange joined to the surface of the first diaphragm, a second diaphragm provided at one end of the second steel pipe column, and a material axis of the second steel pipe column. The flange surface is disposed parallel to the direction and includes a third flange joined to the surface of the second diaphragm, a first splint, and a second splint. The first steel pipe column and the second steel pipe column are arranged in the vertical direction, the first L-shaped flange and the second L-shaped flange are arranged apart from each other, and the first L-shaped flange is arranged apart from the first L-shaped flange. The second L-shaped flange and the third flange are bolted together via the second splint.

A joint structure for a steel pipe column according to an embodiment of the present invention includes a first diaphragm provided at one end of a first steel pipe column, and a flange surface arranged parallel to the material axis direction of the first steel pipe column, A first groove-shaped flange and a second groove-shaped flange whose both ends are bent in a groove shape in the same direction, a second diaphragm provided on the second steel pipe column, and a material axis direction of the first steel pipe column. It includes a third groove-shaped flange and a fourth groove-shaped flange whose flange surfaces are arranged in parallel and whose both ends are groove-shaped in the same direction, and a first splint plate and a second splint plate. The first steel pipe column and the second steel pipe column are arranged in the vertical direction, and the first groove-shaped flange and the second groove-shaped flange face each other in the first direction with their bent ends separated. Welded onto the surface of the first diaphragm so as to is welded onto the surface of the diaphragm, the first direction and the second direction are directions that intersect, and the first groove-shaped flange and the third groove-shaped flange are connected to each other through the first splint. The second groove-shaped flange and the fourth groove-shaped flange are bolted together via a second splint plate.

A joint structure for a steel pipe column according to an embodiment of the present invention includes a first steel pipe column having a first region provided with a plurality of first bolt holes at one end in the material axis direction, and one end in the material axis direction. a second steel pipe column having a second region provided with a plurality of second bolt holes; a first splint; and a second splint. The first steel pipe column and the second steel pipe column are arranged vertically so that the first region and the second region are adjacent to each other, and the first region has an end portion of the first steel pipe column. It has a first cutout, the plurality of first bolt holes are provided on both sides of the first notch, and the first splint and the second splint are The first steel pipe column and the second steel pipe column are in contact with the first region and the second region with the first notch in between, and the first steel pipe column and the second steel pipe column are connected to each other through the first splint plate and the second splint plate. bolted together.

A joint structure for a steel pipe column according to an embodiment of the present invention includes a first steel pipe column having a first region provided with a plurality of first bolt holes at one end in the material axis direction, and one end in the material axis direction. a second steel pipe column having a second region in which a plurality of second bolt holes are provided; a first splint, a second splint, a third splint, and a fourth splint; ,including. The first steel pipe column further includes a third region adjacent to the first region and provided with a plurality of third bolt holes, and the second steel pipe column further includes a third region adjacent to the second region and provided with a plurality of third bolt holes. The first steel pipe column further includes a fourth region provided with a fourth bolt hole, and the first steel pipe column and the second steel pipe column are arranged such that the first region and the fourth region are adjacent to each other, and the second region and a third region are arranged in the vertical direction so as to be adjacent to each other, and the first region has a first notch cut out at the end of the first steel pipe column, and a plurality of first bolts. The hole is provided on both sides of the first notch, and the second region has a second notch cut out from the end of the second steel pipe column, and has a plurality of second notches. The bolt holes are provided on both sides with the second notch in between, and the first splint and the second splint are provided in the first region and the fourth region with the first notch in between. The third splint plate and the fourth splint plate are in contact with the second area and the fourth area with the second notch in between, and the first steel pipe column and the second steel pipe column are in contact with each other. The columns are bolted together via a first splint, a second splint, a third splint, and a fourth splint.

According to one embodiment of the present invention, by providing a plurality of openings that can be used as hand holes at or near the bolt joint, the bolt joint can be easily performed. Bolted joints are technically easier than welded joints, and quality can be stabilized by following the procedures. By arranging multiple through-holes that can be used as hand holes (with different opening directions), we can minimize the amount of welding at the construction site, improve the workability of bolted joints, and It is possible to obtain a joint structure in which the strength of a portion is equal to or greater than that of other portions.

1 is a perspective view of a joint structure of steel pipe columns according to an embodiment of the present invention, in which (A) shows a developed view, and (B) shows a bolt joint in the joint structure of two steel pipe columns. The front view of the bolt joint part in the joint structure of the steel pipe column concerning one embodiment of the present invention is shown. The cross-sectional structure of the bolt joint in the joint structure of the steel pipe column shown in FIG. 2 is shown, in which (A) shows the cross-sectional structure on the first steel pipe column side, and (B) shows the cross-sectional structure on the second steel pipe column side. 1 is a perspective view of a joint structure of steel pipe columns according to an embodiment of the present invention, in which (A) shows a developed view, and (B) shows a bolt joint in the joint structure of two steel pipe columns. The cross-sectional structure of the bolt joint in the joint structure of the steel pipe column shown in FIG. 4 is shown, in which (A) shows the cross-sectional structure on the first steel pipe column side, and (B) shows the cross-sectional structure on the second steel pipe column side. 1 is a perspective view of a joint structure of steel pipe columns according to an embodiment of the present invention, in which (A) shows a developed view, and (B) shows a bolt joint in the joint structure of two steel pipe columns. The cross-sectional structure of the bolt joint in the joint structure of the steel pipe column shown in FIG. 6 is shown, in which (A) shows the cross-sectional structure on the first steel pipe column side, and (B) shows the cross-sectional structure on the second steel pipe column side. 1 shows a joint structure of a steel pipe column according to an embodiment of the present invention, in which (A) is a perspective view of a portion of an L-shaped flange, and (B) is a plan view of a portion of an L-shaped flange. The cross-sectional structure of a bolt joint in the joint structure of a steel pipe column according to an embodiment of the present invention is shown, in which (A) is the cross-sectional structure on the first steel pipe column side, and (B) is the cross-sectional structure on the second steel pipe column side. , is shown. 1 is a perspective view of a joint structure of steel pipe columns according to an embodiment of the present invention, in which (A) shows a developed view, and (B) shows a bolt joint in the joint structure of two steel pipe columns. The cross-sectional structure of the bolt joint in the joint structure of the steel pipe column shown in FIG. 10 is shown, in which (A) shows the cross-sectional structure on the first steel pipe column side, and (B) shows the cross-sectional structure on the second steel pipe column side. 1 is a perspective view of a joint structure of steel pipe columns according to an embodiment of the present invention, in which (A) shows a developed view, and (B) shows a bolt joint in the joint structure of two steel pipe columns. 1 is a perspective view of a joint structure of steel pipe columns according to an embodiment of the present invention, in which (A) shows a developed view, and (B) shows a bolt joint in the joint structure of two steel pipe columns. The cross-sectional structure of the bolt joint in the joint structure of the steel pipe column shown in FIG. 13 is shown, in which (A) shows the cross-sectional structure on the first steel pipe column side, and (B) shows the cross-sectional structure on the second steel pipe column side.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of embodiments of the present invention will be described below with reference to the drawings and the like. However, the present invention includes many different aspects and should not be interpreted as being limited to the contents of the embodiments illustrated below. In order to make the explanation clearer, the drawings may schematically represent the width, thickness, shape, etc. of each part compared to the actual aspect, but this is only an example and does not limit the content of the present invention. It's not something you do. In addition, in this specification, when an element depicted in a drawing and an element depicted in another drawing are the same or have a corresponding relationship, the same reference numerals (or numbers written as codes) are used. A reference numeral (with a, b, etc.) added thereto may be used to omit repeated explanations as appropriate. Furthermore, the characters ``first'' and ``second'' for each element are convenient signs used to distinguish each element, and have no further meaning unless otherwise specified.

[First embodiment]
A joint structure for steel pipe columns according to an embodiment of the present invention has a structure in which a first steel pipe column and a second steel pipe column are bolted together by a flange fixed to a diaphragm. The joint structure will be explained in detail below.

FIG. 1(A) shows a developed view of a joint structure of a steel pipe column according to this embodiment, and FIG. 1(B) shows a perspective view thereof. Note that fastening members such as bolts and nuts are omitted in FIG. 1(A). Moreover, FIGS. 1A and 1B show a case where the first steel pipe column 102 and the second steel pipe column 112 are square steel pipe columns.

In the following description, for convenience, the first steel pipe column 102 has four surfaces, and each surface is referred to as a first surface 11, a second surface 12, a third surface 13, and a fourth surface 14 in a clockwise direction. Similarly, each surface of the second steel pipe column 112 is shown clockwise as a first surface 21, a second surface 22, a third surface 23, and a fourth surface 24. Further, unless otherwise specified, when the steel pipe columns are erected, the first steel pipe column 102 is placed on the lower side and the second steel pipe column 112 is placed on the upper side in the direction of the material axis.

As shown in FIG. 1(A), a first diaphragm 104 is provided at one end of a first steel pipe column 102, and a second diaphragm 114 is provided at one end of a second steel pipe column 112. The first diaphragm 104 and the second diaphragm 114 are attached to the first steel pipe column 102 and the second steel pipe column 112, respectively, by welding. In this embodiment, the first diaphragm 104 and the second diaphragm 114 are attached to a square steel pipe column, so they have a square shape in plan view.

Attached to the first diaphragm 104 are first L-shaped flanges 106a, 106b and second L-shaped flanges 108a, 108b. First L-shaped flanges 106a, 106b and second L-shaped flanges 108a, 108b are welded to first diaphragm 104. The first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b may have a shape in which two flat flanges are connected in an L-shape as shown in the figure, or Although not shown, it may be made of angle iron or solid metal. Further, each of the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b are two flat flanges arranged in an L-shape (not integrated), and It may be replaced by two flat flanges arranged in an L-shape but not in contact with each other.

The first L-shaped flange 106a is provided with a plurality of bolt holes 122 on each side. The widths L1 and L2 of the first L-shaped flange 106a are smaller than 1/2 of the width LD1 of the first diaphragm 104. The first L-shaped flange 106b and the second L-shaped flanges 108a, 108b have substantially the same shape as the first L-shaped flange 106a. Therefore, when the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b are arranged corresponding to the four corners of the first diaphragm 104, the respective L-shaped flanges are brought into contact with each other. They can be placed separately.

FIG. 1A shows a configuration in which the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b are arranged corresponding to the corners of the first diaphragm 104. That is, the first L-shaped flange 106a is located at the corner of the first surface 11 and the fourth surface 14, and the second L-shaped flange 108a is located at the corner of the first surface 11 and the second surface 12. A mode is shown in which the second L-shaped flange 106b is disposed at the corner of the second surface 12 and the third surface 13, and the second L-shaped flange 108b is disposed corresponding to the corner of the third surface 13 and the fourth surface 14. Due to this arrangement of the L-shaped flanges, a region surrounded by the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b is formed on the first diaphragm 104. Further, a first gap 110a is formed between the first L-shaped flange 106a and the second L-shaped flange 108a, and a first gap 110a is formed between the second L-shaped flange 108a and the first L-shaped flange 106b. A third gap 110c is formed between the first L-shaped flange 106b and the second L-shaped flange 108b, and a third gap 110c is formed between the second L-shaped flange 108b and the first L-shaped flange 108b. A fourth gap 110d is formed between the gap 106a and the gap 106a.

Attached to the second diaphragm 114 are third L-shaped flanges 116a, 116b and fourth L-shaped flanges 118a, 118b. The third L-shaped flanges 116a, 116b and the fourth L-shaped flanges 118a, 118b have substantially the same form as the first L-shaped flange 106a. The third L-shaped flanges 116a, 116b and the fourth L-shaped flanges 118a, 118b, as well as the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b, are connected to the second diaphragm 114. It is placed corresponding to the corner of.

As shown in FIG. 1A, a region surrounded by third L-shaped flanges 116a, 116b and fourth L-shaped flanges 118a, 118b is formed on the second diaphragm 114 side. A fifth gap 120a is formed on the second diaphragm 114 between the third L-shaped flange 116a and the fourth L-shaped flange 118a. A sixth gap 120b is formed between the third L-shaped flange 116b and the fourth L-shaped flange 118b, and a seventh gap (120c) not shown is formed between the third L-shaped flange 116b and the fourth L-shaped flange 118b. An eighth gap (120d), not shown, is formed between the fourth L-shaped flange 118b and the third L-shaped flange 116a.

When the first steel pipe column 102 and the second steel pipe column 112 are arranged vertically, the first L-shaped flange 106a and the third L-shaped flange 116a are arranged vertically, and the respective flange surfaces are flush with each other. are arranged so that The second L-shaped flange 108a and the fourth L-shaped flange 118a are similarly arranged vertically, and are arranged so that their respective flange surfaces are flush with each other. The same applies to the arrangement of the first L-shaped flange 106b and the third L-shaped flange 116b, and the arrangement of the second L-shaped flange 108b and the fourth L-shaped flange 118b.

First splints 130a, 130b are abutted on the two outer surfaces of the first L-shaped flange 106a. Second splints 132a, 132b are abutted on the two outer surfaces of the second L-shaped flange 108a. Third splints 140a, 140b are in contact with the inner surface of the first L-shaped flange 106a, and fourth splints 142a, 142b are in contact with the inner surface of the second L-shaped flange 108b. be touched. The first splint 130a is a plate-like member, and is provided with a plurality of bolt holes 122. The other splints have a similar configuration. The first splints 130a, 130b and the third splints 140a, 140b connect the first L-shaped flange 106a and the second splint when the first steel pipe column 102 and the second steel pipe column 112 are arranged in the vertical direction. It has a length that allows it to come into contact with both of the L-shaped flanges 116a of No. 3.

The first L-shaped flange 106a and the third L-shaped flange 116a are sandwiched between the first splints 130a, 130b and the third splints 140a, 140b and are bolted together. The second L-shaped flange 108a and the fourth L-shaped flange 118a are sandwiched between the second splints 132a, 132b and the fourth splints 142a, 142b and are bolted together. The same applies to the first L-shaped flange 106b and the third L-shaped flange 116b, and the second L-shaped flange 108b and the fourth L-shaped flange 118b.

In FIG. 1(B), a first steel pipe column 102 and a second steel pipe column 112 are arranged in the vertical direction, and a first bolt joint 100a, a second bolt joint 100b, and a third bolt joint 100c (although not shown, a fourth bolt joint 100d is formed on the back side). The first bolt joint 100a has a first L-shaped flange 106a and a third L-shaped flange 116a, and a first splint 130a and a third splint 140a (and a first splint 130b, not shown). and the third splint plate 140b) by bolts and nuts. In the first bolted joint 100a, the first splints 130a, 130b abut the outer surfaces of the first L-shaped flange 106a and the third L-shaped flange 116a, and the third splint 140a (and A third splint 140b) which is not attached is abutted against the inner surfaces of the first L-shaped flange 106a and the third L-shaped flange 116a. Such a configuration is the same for the second to fourth bolted joints.

The first L-shaped flange 106a and the third L-shaped flange 116a are joined by bolts, and the second L-shaped flange 108a and the fourth L-shaped flange 118b are joined by bolts, so that the first gap 110a A first opening 150a is formed in which the first opening 150a and the fifth gap 120a are connected. The first opening 150a faces the first surface 11 of the first steel pipe column 102 and the first surface 21 of the second steel pipe column 112. Similarly, second openings 150b are formed on the second surface 12 of the first steel pipe column 102 and on the second surface 22 side of the second steel pipe column 112. Although not shown in FIG. 1B, a third opening 150c is formed on the third surface 13 of the first steel pipe column 102 and the third surface 23 of the second steel pipe column 112. A fourth opening 150d is formed on the fourth surface 14 of the first steel pipe column 102 and the fourth surface 24 of the second steel pipe column 112.

The first opening 150a and the second opening 150b (and the third opening 150c and fourth opening 150d, not shown) have a size that can be used as a hand hole. That is, these openings have a size that allows a worker to insert tools and the like to perform bolt joint construction.

The first steel pipe column 102 and the second steel pipe column 112 are made of steel material. First diaphragm 104, second diaphragm 114, first L-shaped flange 106a, 106b, second L-shaped flange 108a, 108b, third L-shaped flange 116a, 116b, fourth L-shaped flange 118a, 118b, first splints 130a, 130b, second splints 132a, 132b, third splints 140a, 140b, and fourth splints 142a, 142b are similarly formed of steel materials. For example, structural rolled steel is used as the steel material.

FIG. 2 shows a front view of the joint structure of the steel pipe column according to the present embodiment. FIG. 2 shows a first bolt joint 100a formed on the first surface 11 of the first steel pipe column 102 and the first surface 21 of the second steel pipe column 112, and similarly, the first bolt joint 100a is formed on the first surface 11 of the first steel pipe column 102 and the first surface 21 of the second steel pipe column 112, 22, a second bolt joint 100b is formed on the third surface 13 and the third surface (not shown, but it is shown that a fourth bolt joint 100d is formed on the fourth surface 14 and the fourth surface 24). A third bolt joint 100c is formed at 23).

The first opening 150a connects the first L-shaped flange 106a and the third L-shaped flange 116a, the second L-shaped flange 108a and the fourth L-shaped flange 118a, the first diaphragm 104, and the third L-shaped flange 116a. This is a region surrounded by two diaphragms 114. The size of the first opening 150a is set by the height and width direction length (L2 shown in FIG. 1(A)) of the first L-shaped flange 106a and the third L-shaped flange 116a. can do.

As shown in FIGS. 1A and 1B, first L-shaped flanges 106a, 106b, second L-shaped flanges 108a, 108b, third L-shaped flanges 116a, 116b, fourth L-shaped flanges When the sizes of 118a and 118b are matched, the sizes of the openings (first opening 150a, second opening 150b, third opening 150c, and fourth opening 150d) that are formed are as follows. Almost the same. Each opening is sized to span both upper and lower L-shaped flanges. Therefore, when the opening is used as a hand hole, bolt joining work can be easily performed.

3(A) shows the cross-sectional structure of the region sandwiched by arrows A1 and A2 in FIG. 2, and FIG. 3(B) shows the cross-sectional structure of the region sandwiched by arrows B1 and B2 in FIG. The cross-sectional structure of is shown.

As shown in FIG. 3A, first L-shaped flanges 106a, 106b and second L-shaped flanges 108a, 108b are arranged on the surface of the first diaphragm 104. In this embodiment, the first steel pipe column 102 is a square steel pipe column, so the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b correspond to the corners of the square steel pipe column, and each The L-shaped flanges are spaced apart. Specifically, there is a first gap 110a between the first L-shaped flange 106a and the second L-shaped flange 108a, and there is a gap between the second L-shaped flange 108a and the first L-shaped flange 106b. a second gap 110b between the first L-shaped flange 106b and the second L-shaped flange 108b; a third gap 110c between the second L-shaped flange 108b and the first L-shaped flange 108b; A fourth gap 110d is provided between the L-shaped flange 106a and the L-shaped flange 106a.

As shown in FIG. 3(B), third L-shaped flanges 116a, 116b and fourth L-shaped flanges 118a, 118b are arranged on the surface of the second diaphragm 114. In this embodiment, the second steel pipe column 112 is a square steel pipe column, so the third L-shaped flanges 116a, 116b and the fourth L-shaped flanges 118a, 118b correspond to the corners of the square steel pipe column, and each The L-shaped flanges are spaced apart. Specifically, a fifth gap 120a is provided between the third L-shaped flange 116a and the fourth L-shaped flange 118a, and a gap between the fourth L-shaped flange 118a and the third L-shaped flange 116b is provided. a sixth gap 120b between the third L-shaped flange 116b and the fourth L-shaped flange 118b; a seventh gap 120c between the fourth L-shaped flange 118b and the third L-shaped flange 118b; It has an eighth gap 120d between it and the L-shaped flange 116a.

As shown in FIGS. 3A and 3B, first splints 130a and 130b are brought into contact with the first L-shaped flange 106a and the third L-shaped flange 116a from the outside, and from the inside. The third splints 140a and 140b are brought into contact with each other, and the bolt 152 and nut 154 inserted into the bolt hole 122 form a first bolt joint 100a. Further, second splints 132a, 132b are brought into contact with the second L-shaped flange 108a and fourth L-shaped flange 118a from the outside, and fourth splints 142a, 142b are brought into contact with the second L-shaped flange 108a, 118a from the inside. A second bolted joint 100b is formed. Similarly, for the other two locations, namely, the first L-shaped flange 106b and the third L-shaped flange 116b, and the second L-shaped flange 108b and the fourth L-shaped flange 118b, the third bolted joint 100c, and a fourth bolted joint 100d is formed.

Further, the first gap 110a and the fifth gap 120a are arranged in an overlapping position to form a first opening 150a, and the second gap 110b and the sixth gap 120b are arranged in an overlapping position. A second opening 150b is formed, a third gap 110c and a seventh gap 120c are arranged in an overlapping position to form a third opening 150c, and a fourth gap 110d and an eighth gap 120d A fourth opening 150d is formed at a position overlapping with the fourth opening 150d.

As shown in FIGS. 3A and 3B, since the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b are attached to the first diaphragm 104, the first steel pipe column 102 The wall thickness can be different from that of . Similarly, since the third L-shaped flanges 116a, 116b and the fourth L-shaped flanges 118a, 118b are attached to the second diaphragm 114, they have a thickness different from that of the second steel pipe column 112. can do. The first L-shaped flanges 106a, 106b, the second L-shaped flanges 108a, 108b can be made thicker than the wall thickness of the first steel pipe column 102, and the third L-shaped flanges 116a, 116b, the fourth L-shaped flanges 116a, 116b, The shaped flanges 118a, 118b can be made thicker than the wall thickness of the second steel pipe column 112. Thereby, the strength of the bolted joint can be increased. On the other hand, since each L-shaped flange is arranged with a gap, an increase in weight of the joint portion can be suppressed.

Note that this embodiment shows a mode in which the first splints 130a, 130b are brought into contact with the outside surface of the first L-shaped flange 106a, and the third splints 140a, 140b are brought into contact with the inside surface. However, if the strength of the bolt joint can be maintained sufficiently, it is also possible to omit one of the splints placed on the outside and the splints placed on the inside.

According to this embodiment, openings that can be used as hand holes are provided between the four bolt joints formed by the L-shaped flanges, making it possible to easily perform the bolt joint work. In other words, by providing four openings facing different directions in the joint portion between the first steel pipe column 102 and the second steel pipe column 112, the bolt joining operation is facilitated. In the structure of such a joint, by arranging L-shaped flanges at four locations, it is possible to increase the resistance against shearing force acting on the steel pipe column and bending stress. As described above, according to the present embodiment, the amount of welding at the construction site is minimized, the workability of bolted joints is improved, and a joint structure in which the strength of the joined part is equal to or higher than that of other parts is created. Obtainable.

Note that although this embodiment shows a case where the first steel pipe column 102 and the second steel pipe column 112 are square, the present invention is not limited to this and can also be applied to a circular steel pipe column.

[Second embodiment]
This embodiment shows an aspect in which the configuration of the flange is different from the first embodiment. In the following, parts that are different from the first embodiment will be mainly described.

FIG. 4(A) shows a developed view of the joint portion of the steel pipe column according to this embodiment, and FIG. 4(B) shows a perspective view of the joint portion of the steel pipe column. Note that fasteners such as bolts and nuts are omitted in FIG. 4(A).

As shown in FIG. 4(A), first L-shaped flanges 106a, 106b and second L-shaped flanges 108a, 108b are provided on the first diaphragm on the side of the first steel pipe column 102. On the other hand, third flanges 115a, 115b, 115c (not shown), and 115d are attached to the second diaphragm on the second steel pipe column 112 side. This embodiment differs from the first embodiment in that the third flanges 115a, 115b, 115c (not shown), and 115d are flat flanges. The third flanges 115a, 115b, 115c (not shown), 115d are arranged flush with the flange surfaces of the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b. Ru.

The first splint 130a and the third splint 140a are in contact with the first L-shaped flange 106a and the third flange 115a, and the first splint 130b and the third splint 140b are in contact with the first L-shaped flange 106a and the third flange 115a. It is arranged so as to be in contact with the L-shaped flange 106a and the third flange 115d, and is bolted together. Further, the second splint 132a and the fourth splint 142a are arranged so as to be in contact with the second L-shaped flange 108a and the third flange 115a, and the second splint 132b and the fourth splint 142b is arranged and bolted so as to be in contact with the second L-shaped flange 108a and the third flange 115b.

As shown in FIG. 4(B), a first opening 150a is formed between the first bolted joint 100a and the second bolted joint 100b, and a first opening 150a is formed between the second bolted joint 100b and the third bolted joint 100b. A second opening 150b is formed between the bolt joint 100c and the bolt joint 100c. The heights of the first opening 150a and the second opening 150b substantially match the heights (lengths in the material axis direction) of the first L-shaped flanges 106a, 106b and the second L-shaped flange 108a. .

A cross-sectional structure corresponding to line D1 shown in FIG. 4(B) is shown in FIG. 5(A), and a cross-sectional structure corresponding to line D2 shown in FIG. 5(B) is shown. The configurations of the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b shown in FIG. 5(A) are similar to the configuration shown in FIG. 3(A). The arrangement of each L-shaped flange forms a first gap 110a, a second gap 110b, a third gap 110c, and a fourth gap 110d. On the other hand, as shown in FIG. 5(B), third flanges 115a, 115b, 115c, and 115d provided on the side of the second diaphragm 114 are flat flanges, and are arranged so as to surround in four directions. . Therefore, no gap is formed. As described above, according to the present embodiment, the openings ( Third flanges 115a and 115b are provided on the side of the second steel pipe column 112 and are provided with a first opening 105a, a second opening 150b, a third opening 150c, and a fourth opening 150d. , 115c, and 115d do not form an opening.

4(A) and (B) and FIG. 5(A) and (B), an L-shaped flange is provided on the first steel pipe column 102 side, and an L-shaped flange is provided on the second steel pipe column 112 side. Although a mode in which a flat plate-shaped flange is provided is shown, such an arrangement is just an example, and a flat plate-shaped flange is provided on the first steel pipe column 102 side, and an L-shaped flange is provided on the second steel pipe column 112 side. It may be provided.

According to such a configuration, one of the flanges arranged vertically in the axial direction of the material to form a bolted joint is an L-shaped flange, and the other is a flat flange, thereby reducing the shearing force acting on the steel pipe column. It is also possible to increase the resistance to bending stress. According to this embodiment as well, it is possible to minimize the amount of welding at a construction site, improve the workability of bolt joints, and obtain a joint structure in which the strength of the joint portion is equal to or greater than that of other portions.

Note that the heights (lengths in the material axis direction) of the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b shown in FIG. 4(A) and the third flanges 115a, 115b, 115c (not shown) may be different from the height (length in the material axis direction) of 115d. That is, by changing the height (length in the material axis direction) of the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b, the openings (the first opening 150a, the second The sizes of the opening 150b, the third opening 150c, and the fourth opening 150d can be adjusted. In other words, by adjusting the height (length in the material axis direction) of the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b (in conjunction with this, the third flange 115a, 115b, 115c, and 115d), the size of the opening used as the hand hole can be provided at an appropriate size without impairing workability.

The joint structure of the steel pipe column according to the present embodiment is the same as the first embodiment, except that the shapes of the third flanges 115a, 115b, 115c, and 115d are different, and has the same effects.

[Third embodiment]
This embodiment shows an aspect in which the structure of the flange is different from the first embodiment and the second embodiment. In the following, parts that are different from the first embodiment will be mainly described.

FIG. 6(A) shows a developed view of the joint structure of the steel pipe column according to this embodiment, and FIG. 6(B) shows its perspective view. Note that fastening members such as bolts and nuts are omitted in FIG. 6(A). Moreover, FIGS. 6A and 6B show a case where the first steel pipe column 102 and the second steel pipe column 112 are square steel pipe columns.

As shown in FIG. 6(A), a first groove-shaped flange 107 and a second groove-shaped flange 109 are attached to the first diaphragm 104 provided on the side of the first steel pipe column 102. The first groove flange 107 and the second groove flange 109 have a groove shape in which both ends of the flat flanges are bent in the same direction. The first grooved flange 107 and the second grooved flange 109 are arranged such that their grooved sides face each other. In other words, the first groove-shaped flange 107 and the second groove-shaped flange 109 are arranged on the first diaphragm 104 with their groove-shaped curved surfaces facing inward. Moreover, the flange surfaces of the first groove-shaped flange 107 and the second groove-shaped flange 109 are oriented in a direction parallel to the material axis direction of the first steel pipe column 102. The first groove-shaped flange 107 and the second groove-shaped flange 109 have a flat plate portion along one side of the first diaphragm 104 and a flange surface in a groove-shaped bent portion, and each have a plurality of bolt holes 122. is provided.

The sum of the length L3 of the groove-shaped bent portion of the first groove-shaped flange 107 and the length L4 of the groove-shaped bent portion of the second groove-shaped flange 109 is the width LD1 of the first diaphragm 104. It has a value smaller than 1/2 of . Therefore, when the first groove-shaped flange 107 and the second groove-shaped flange 109 are disposed facing each other, the groove-shaped bent ends do not contact each other and are arranged so that they have gaps 111a and 111b. be able to.

A third groove-shaped flange 117 and a fourth groove-shaped flange 119 are attached to the second diaphragm 114 provided on the side of the second steel pipe column 112. The third channel flange 117 and the fourth channel flange 119 have a similar configuration to the first channel flange 107 and the second channel flange 109 and are similarly attached to the second diaphragm 114. . However, when the gaps 111a and 111b formed by the first groove flange 107 and the second groove flange 109 are formed on the first surface 11 and third surface 13 sides of the first steel pipe column 102, , the third groove-shaped flange 117 and the fourth groove-shaped flange 119 are arranged so that the formed gaps 121a and 121b (not shown) face the second surface 22 and the fourth surface 24 of the second steel pipe column 112. will be placed in

The first groove flange 107, the second groove flange 109, the third groove flange 117, and the fourth groove flange 119 are two flat flanges connected in an L shape as shown in the figure. Although not shown, it may be made of solid metal.

When the first steel pipe column 102 and the second steel pipe column 112 are arranged vertically, the first groove-shaped flange 107 and the third groove-shaped flange 117 are arranged vertically, and the respective flange surfaces are flush with each other. are arranged so that The second groove-shaped flange 109 and the fourth groove-shaped flange 119 are similarly arranged vertically, and are arranged so that their respective flange surfaces are flush with each other.

First splints 130a, 130b are in contact with the outer surfaces of the first groove-shaped flange 107 and the third groove-shaped flange 117, and third splints 140a, 140b are in contact with the inner surfaces of the first groove-shaped flange 107 and the third groove-shaped flange 117. A joint is formed. The first splints 130a, 130b and the second splints 132a, 132b are arranged so that when the first steel pipe column 102 and the second steel pipe column 112 are arranged in the vertical direction, It has a length that can abut both of the third groove-shaped flanges 117. Further, second splint plates 132a, 1321b are in contact with the outer surfaces of the second groove-shaped flange 109 and the third groove-shaped flange 117, and fourth splint plates 142a, 142b are in contact with the inner surfaces. A bolted joint is formed. Note that, as shown in FIG. 6(A), the other portions of the first groove flange 107 and the second groove flange 109 are also bolted to the fourth groove flange by means of splint plates.

FIG. 6(B) shows that by connecting the first steel pipe column 102 and the second steel pipe column 112 in the vertical direction, a first bolt joint 100a, a second bolt joint 100b, a third bolt joint This shows how a bolt joint 100c is formed (although not shown, a fourth bolt joint 100d is formed on the back side). The first bolted joint 100a has a first groove flange 107 and a third groove flange 117, a first splint 130a and a third splint 140a, and a first splint 130b and a third splint 140a. It is formed by being sandwiched between the third splint plate 140b (not shown) and fastened with bolts and nuts. Further, the second bolted joint 100b has a second groove-shaped flange 109 and a third groove-shaped flange 117, a second splint 132a, a fourth splint 142a (not shown), and a second splint 132a and a fourth splint 142a (not shown). It is formed by being sandwiched between the splint plate 132b and the fourth splint plate 142b (not shown) and fastened with bolts and nuts. The third bolt joint 100c is formed by the second groove flange 109 and the fourth groove flange 119, and the fourth bolt joint 100d is formed by the first groove flange 107 and the fourth groove flange 119. Similarly formed through splints.

As shown in FIG. 6(B), first openings 150a are formed on the first surface 11 of the first steel pipe column 102 and the first surface 21 side of the second steel pipe column 112. A second opening 150b is formed on the second surface 12 of the first steel pipe column 102 and the second surface 22 side of the second steel pipe column. The first opening 150a is a region surrounded by the first groove flange 107, the second groove flange 109, the third groove flange 117, and the first diaphragm 104, and the second The opening 150b is a region surrounded by the second groove flange 109, the third groove flange 117, the fourth groove flange 119, and the second diaphragm 114.

A cross-sectional structure corresponding to line D3 shown in FIG. 6(B) is shown in FIG. 7(A), and a cross-sectional structure corresponding to line D4 shown in FIG. 7(B) is shown. As shown in FIG. 7A, by arranging the first groove flange 107 and the second groove flange 109 apart from each other, a gap 111a is formed on the first surface 11 side, and a gap 111a is formed on the first surface 11 side. A gap 111b is formed on the surface 13 side. Gap 111a forms a first opening 150a, and gap 111b forms a third opening 150c. As shown in FIG. 7(B), by arranging the third groove flange 117 and the fourth groove flange 119 apart from each other, a gap 121a is formed on the second surface 22 side, and the fourth A gap 121b is formed on the surface 24 side. Gap 121a forms second opening 150b, and gap 121b forms fourth opening 150d.

As shown in FIGS. 7A and 7B, the first opening 150a and the third opening 150c are formed by the first groove flange 107 and the second groove flange 109, The opening 150b and the fourth opening 150d are formed by the third grooved flange 117 and the fourth grooved flange 119. Therefore, the first opening 150a and the third opening 150c are different in height from the second opening 150b and the fourth opening 150d. That is, as shown in FIG. 6(B), the second opening 150b is formed at a higher position than the first opening 150a.

In this way, the steel pipe column joint structure according to the present embodiment can provide openings with different heights on two adjacent surfaces. With such an arrangement of the openings, it is possible to improve workability when, for example, bolting is performed using both arms. By arranging a set of openings diagonally at different heights, it is possible to improve workability when forming bolted joints on each side, making it easier to weld at construction sites. It is possible to reduce the amount as much as possible, improve the workability of bolt joints, and obtain a joint structure in which the strength of the joint part is equal to or higher than that of other parts. Moreover, since all the openings arranged on each side of the steel pipe column are not arranged at the same height, it is possible to suppress a decrease in the strength of the joint portion.

[Fourth embodiment]
This embodiment shows an aspect in which the configuration of the diaphragm is different from the first embodiment. In the following, parts that are different from the first embodiment will be mainly described.

FIG. 8(A) shows a perspective view of the first L-shaped flanges 106a, 106b and the second L-shaped flanges 108a, 108b disposed on the first diaphragm 104, and FIG. 8(B) shows a plan view thereof. Show the diagram. In this embodiment, the first L-shaped flange 106a is provided with a rib 126a that contacts two flange surfaces. The rib 126a is provided inside the first L-shaped flange 106a. Similarly, ribs 126b, 126c, and 126d are provided on the first L-shaped flange 106b and the second L-shaped flanges 108a, 108b.

By providing the ribs in this manner, the out-of-plane rigidity of the L-shaped flange can be increased. Thereby, the local buckling strength against the compressive axial force acting on the bolted joint can be increased, and a durable joint structure can be provided. In this embodiment, a mode is shown in which ribs are provided on the first L-shaped flanges 106a, 106b, 106c, and 106d provided on the side of the first steel pipe column 102, but the structure of the L-shaped flange with ribs is as follows. It can also be applied to the third L-shaped flanges 116a, 116b and the fourth L-shaped flanges 118a, 118b.

The rib configuration according to this embodiment can be implemented in combination with the second embodiment and the third embodiment as appropriate.

[Fifth embodiment]
This embodiment shows an aspect in which the configuration of the diaphragm is different from the first embodiment. In the following, parts that are different from the first embodiment will be mainly described.

FIGS. 9A and 9B are drawings corresponding to FIGS. 3A and 3B, and show the cross-sectional structure of a bolted joint of a steel pipe column. In this embodiment, the first diaphragm 104 is provided with a through hole 124a, and the second diaphragm 114 is provided with a through hole 124b. The size and shape in plan view of the through hole 124a and the through hole 124b are arbitrary. In this way, by providing through holes in one or both of the first diaphragm 104 and the second diaphragm 114, the weight can be reduced while maintaining the strength of the joint portion.

The joint structure of the steel pipe column according to this embodiment is the same as that of the first embodiment except for the structure of the diaphragm. Therefore, in addition to the above effects, advantageous effects similar to those of the first embodiment can be obtained. Note that this embodiment can be implemented in combination with the second to fourth embodiments as appropriate.

[Sixth embodiment]
A joint structure for steel pipe columns according to an embodiment of the present invention has a structure in which a first steel pipe column and a second steel pipe column are bolted together via a splint. The joint structure will be explained in detail below.

FIG. 10(A) shows a developed view of the joint of the square steel pipe column according to the present embodiment, and FIG. 10(B) shows a perspective view of the joint of the square steel pipe column according to the present embodiment. Note that fastening members such as bolts and nuts are omitted in FIG. 10(A). Moreover, in this embodiment, a case is shown in which the steel pipe column is a square steel pipe column.

As shown in FIG. 10(A), a region in which a plurality of bolt holes 122 are formed is provided at one end of the first steel pipe column 102. In this embodiment, since the first steel pipe column 102 is square, regions in which a plurality of bolt holes 122 are formed are provided on four sides. Here, for convenience, the regions in which the plurality of bolt holes 122 are provided on each surface will be referred to as first regions 160a, 160b, 160c, and 160d. Since a plurality of bolt holes 122 are arranged along the material axis direction of the first steel pipe column 102, the first regions 160a, 160b, 160c, and 160d are arranged along the material axis from the end of the first steel pipe column 102. It can be defined as a region having a predetermined length in the direction.

A part of the end of the first steel pipe column 102 has a notch that extends over a predetermined length in the axial direction of the material. The notch is provided in the first region. Specifically, as shown in FIG. 10(A), a first notch 162a, a second notch 162b, and a third notch are formed corresponding to the first regions 160a, 160b, 160c, and 160d. A notch 162c and a fourth notch 162d are provided. The first notch portion 162a is provided at approximately the center of one side of the end of the first steel pipe column 102 in the first region 160a. In the first region 160a, the plurality of bolt holes 122 are provided on both sides of the first notch 162a. This aspect also applies to the second notch 162b, third notch 162c, and fourth notch 162d provided in the first regions 160b, 160c, and 160d.

Similarly, the second steel pipe column 112 is provided with second regions 170a, 170b, 170c, and 170d in which a plurality of bolt holes 122 are provided, corresponding to each surface. The second regions 170a, 170b, 170c, and 170d are different from the first regions 160a, 160b, 160c, and 160d in that they are not provided with a notch, and have the same configuration as the other portions.

On the first surface 11 of the first steel pipe column 102 and the first surface 21 of the second steel pipe column 112, a first splint 130a and a second splint 132a are arranged from the outside to the first region 160a and the first surface 21 of the second steel pipe column 112. It is arranged so as to be in contact with the area 170a of No. 2. Further, from the inside of the first steel pipe column 102 and the second steel pipe column 112, the third splint 140a and the fourth splint 142a are arranged to overlap with the first splint 130a and the second splint 132a. will be placed in The first splint 130a and the second splint 132a have a length that allows them to come into contact with both the first region 160a and the second region 170a in the length along the axial direction of the steel pipe column. have Further, the first splint plate 130a and the second splint plate 132a do not overlap with the first notch portion 162a, but are arranged so as to sandwich the first notch portion 162a from both sides in the left-right direction.

Similarly, on the second surface 12 of the first steel pipe column 102 and the second surface 22 of the second steel pipe column 112, a first splint 130b, a second splint 132b, and a third splint 140b and A fourth splint 142b is arranged. Although not explained in detail, the third surface 13 and fourth surface 14 of the first steel pipe column 102 and the third surface 23 and fourth surface 24 of the second steel pipe column 112 are also Splinters are placed in the same way.

FIG. 10(B) shows a mode in which the first steel pipe column 102 and the second steel pipe column 112 are arranged in the vertical direction and connected by the first bolt joint 100a and the second bolt joint 100b ( Although not shown, a third bolt joint 100c and a fourth bolt joint 100d are formed on the back side. The first bolted joint 100a has a structure in which the first steel pipe column 102 and the second steel pipe column 112 are connected to a first splint 130a and a second splint 132a (and a third splint 140a and a third splint (not shown)). No. 4 splint plate 142b) is fastened with bolts and nuts. Such a configuration is the same for the second to fourth bolted joints.

As shown in FIG. 10(B), the first surface 11 of the first steel pipe column 102 has a first opening 150a, and the second surface 12 has a second opening 150b ( Although not shown, the third surface 13 has a third opening 150c, and the fourth surface 14 has a fourth opening). The first opening 150a is formed by a first notch 162a, and the second opening 150b is formed by a second notch 162b. First opening 150a. The second opening 150b is a through hole that communicates the outside and inside regions of the steel pipe column, and can be used as a hand hole at the construction site. Therefore, the bolt holes 122 provided in the respective flanges of these openings have a diameter that allows the bolts, which are fasteners, to be inserted therethrough.

11(A) shows a cross-sectional structure corresponding to line D5 in FIG. 10(B), and FIG. 11(B) shows a cross-sectional structure corresponding to line D6 in FIG. 10(B).

As shown in FIG. 11(A), the first surface 11 of the first steel pipe column 102 is provided with a first notch 162a, and the second surface 12 is provided with a first notch 162b. , the third surface 13 is provided with a first notch 162c, and the fourth surface 14 is provided with a first notch 162d. The first surface 11 of the first steel pipe column 102 is abutted by a first splint 130a and a second splint 132a from the outside, and a third splint 140a and a fourth splint 142a from the inside. The bolt 152 and nut 154 that are in contact with each other and inserted into the bolt hole 122 form a first bolt joint 100a. Similarly, a first splint 130b and a second splint 132b are brought into contact with the second surface 12 from the outside, and a third splint 140b and a fourth splint 142b are brought into contact with the second surface 12 from the inside. , a second bolted joint 100b is formed, and a first splint 130c and a second splint 132c are in contact with the third surface 13 from the outside, and a third splint 140c and a fourth splint from the inside. A splint plate 142c is brought into contact with the fourth surface 14 to form the third bolt joint 100c, and a first splint plate 130d and a second splint plate 132d are brought into contact with the fourth surface 14 from the outside, and a second splint plate 130d is brought into contact with the fourth surface 14 from the inside. The third splint plate 140d and the fourth splint plate 142d are brought into contact with each other to form a fourth bolt joint 100d.

A first opening 150a is formed in the first surface 11 of the first steel pipe column 102 by a first notch 162a. The first opening 150a is disposed between the first splint 130a, the second splint 132a, and the third splint 140a and the fourth splint 142a. The second opening 150b provided on the second surface 12, the third opening 150c provided on the third surface 13, and the fourth opening 150d provided on the fourth surface 14 have similar configurations.

FIG. 11(B) shows the cross-sectional structure of the bolted joint portion of the second steel pipe column 112. The second steel pipe column 112 is not provided with a notch, and has a first bolt joint 100a on the first surface 21, a second bolt joint 100b on the second surface 22, and a second bolt joint 100b on the third surface 23. A fourth bolt joint 100d is formed on the fourth surface 24 of the third bolt joint 100c.

By forming notches (first notch 162a, second notch 162b, third notch 162c, fourth notch 162d) in the first steel pipe column 102, There is a concern that the cross-sectional area of that part will decrease and the strength will decrease. However, by arranging splints on both sides of the notch and forming a bolt joint, it is possible to compensate for the decrease in cross-sectional area due to the formation of the notch and prevent a decrease in strength. For this reason, it is preferable that the length of the notch formed in the first steel pipe column 102 in the material axis direction is shorter than the length of the splint. On the other hand, the width of the notch can be set as appropriate within a range that can ensure the area in which the bolt hole is to be formed.

In this embodiment, the first splints 130a, 130b and the second splints 132a, 132b are brought into contact with the first steel pipe column 102 from the outside, and the third splints 140a, 140b and the second splints are brought into contact with the first steel pipe column 102 from the inside. 4 is shown in which the splints 142a and 142b are in contact with each other, but if the strength of the bolt joint can be maintained sufficiently, it is also possible to omit one of the splints placed on the outside and the splint placed on the inside. It is.

According to this embodiment, by forming a notch in one of the steel pipe columns arranged above and below, it is possible to form an opening that can be used as a hand hole during construction work, and to facilitate bolt joint work. It can be done easily. In other words, in the joint portion between the first steel pipe column 102 and the second steel pipe column 112, four openings facing different directions can be provided, making it possible to easily perform bolt connection work. In the structure of such a joint, by arranging splints to sandwich the opening (notch) to form a bolted joint, it is possible to increase the resistance to shearing force and bending stress acting on the steel pipe column. can. As described above, according to the present embodiment, it is possible to obtain a joint structure in which the amount of welding is minimized and the workability of bolt joining is improved.

[Seventh embodiment]
This embodiment shows an aspect in which the configuration of the opening is different from the fifth embodiment. In the following, parts that are different from the sixth embodiment will be mainly described.

FIG. 12(A) shows a developed view of the joint of the square steel pipe column according to the present embodiment, and FIG. 12(B) shows a perspective view of the joint of the square steel pipe column according to the present embodiment. Note that fastening members such as bolts and nuts are omitted in FIG. 12(A).

As shown in FIG. 12(A), the second steel pipe column 112 has a first notch 172a formed on the first surface 21 and a second notch 172b formed on the second surface 22. . The first notch 172a is formed in the second region 170a, and the second notch 172b is formed in the second region 170b. When the second steel pipe column 112 is placed on the first steel pipe column 102, the first notch 172a is formed at a position connected to the first notch 162a in the material axis direction, and the second The notch 172b is formed at a position connected to the second notch 162b. Further, although not shown in FIG. 12(A), similar notches are provided on the third surface 23 and fourth surface 24 of the second steel pipe column 112.

As shown in FIG. 12(B), when the first steel pipe column 102 and the second steel pipe column 112 are connected by bolt connection, a first opening 150a is provided in the first surface 11 and the second surface 12. A second opening 150b is provided in the second surface 12 and the second surface 22. Although not shown in FIG. 12B, openings are similarly provided in the third surface 13 and the third surface 23, and in the fourth surface 14 and the fourth surface 24.

In this embodiment, by providing notches in both the first steel pipe column 102 and the second steel pipe column 112, the diameter of the opening used as the hand hole can be increased. Thereby, it is possible to improve workability when constructing bolted joints. On the other hand, when the opening and the diameter are the same in the sixth embodiment, the size of the notch formed in the first steel pipe column 102 and the second steel pipe column 112 can be reduced. Thereby, a decrease in strength in each steel pipe column can be suppressed.

The joint structure of the steel pipe column according to the present embodiment has the same configuration as the sixth embodiment except that the second steel pipe column is provided with a notch, so it can produce the same effects. I can do it.

[Eighth embodiment]
This embodiment shows an aspect in which the configuration of the opening is different from the sixth embodiment and the seventh embodiment. In the following, parts that are different from the sixth embodiment and the seventh embodiment will be mainly described.

FIG. 12(A) shows a developed view of the joint of the square steel pipe column according to the present embodiment, and FIG. 12(B) shows a perspective view of the joint of the square steel pipe column according to the present embodiment. Note that fastening members such as bolts and nuts are omitted in FIG. 12(A).

As shown in FIG. 13(A), the first steel pipe column 102 has a first notch 162a formed on the first surface 11 and a third notch 162c formed on the third surface 13. Therefore, the second surface 12 and the fourth surface 14 are not provided with a notch. The second steel pipe column 112 has a second notch 172b formed on the second surface 22, a fourth notch 172d (not shown) formed on the fourth surface 24, and a second notch 172b formed on the second surface 24. Also, no notch is formed on the third surface 23.

As shown in FIG. 12(B), when the first steel pipe column 102 and the second steel pipe column 112 are connected by bolt connection, a first opening 150a is provided in the first surface 11, and a first opening 150a is provided in the second surface 22. A second opening 150b is provided therein. Although not shown in FIG. 13(B), openings are similarly provided on the third surface 13 and the fourth surface 24.

14(A) shows a cross-sectional structure corresponding to line D7 in FIG. 13(B), and FIG. 14(B) shows a cross-sectional structure corresponding to line D8 in FIG. 13(B).

As shown in FIG. 14(A), a first notch 162a is provided on the first surface 11 of the first steel pipe column 102, a third notch 162c is provided on the third surface 13, and a third notch 162c is provided on the third surface 13. No notches are provided on the second surface 12 and the fourth surface 14. The first notch 162a forms a first opening 150a, and the third notch 162c forms a third opening 150c. Further, in FIG. 14(B), a second notch 172b is provided on the second surface 22 of the second steel pipe column 112, a fourth notch 172d is provided on the fourth surface 24, and the first No notch is provided on the surface 21 and the third surface 23.

Due to this configuration, the first notch 162a and the third notch 162c are arranged at different heights from the second notch 172b and the fourth notch 172d. In other words, the first notch 162a and the second notch 172b are arranged in a diagonal shape, and the third notch 162c and the fourth notch 172d are arranged in a diagonal shape. It can be said that it has been placed.

Due to the arrangement of the notches, the first opening 150a and the third opening 150c, and the second opening 150b and the fourth opening 150d have different heights in the axial direction of the steel pipe column. It is placed in the middle of the day. That is, as shown in FIG. 13(B), the first opening 150a and the second opening 150b are arranged at different heights. Although not shown, the third opening 150c and the fourth opening 150d are also arranged at different heights.

According to this embodiment, in the joint structure of the steel pipe column, openings can be provided on each surface, and the heights of the openings provided on adjacent surfaces can be made different and arranged in a diagonal manner. According to this arrangement of openings, the through holes arranged on each side of the steel pipe column are not all arranged at the same height, which reduces the resistance to axial force, shear force, and bending stress acting on the steel pipe column. can be increased.

Furthermore, according to the present embodiment, an opening is provided in the joint portion formed by bolting, and the adjacent openings are arranged in a diagonal manner, thereby bolting two steel pipe columns arranged one above the other. You can easily perform the work at the time.

100... Bolt joint, 102... First steel pipe column, 104... First diaphragm, 106... First L-shaped flange, 107... First channel flange, 108 ...Second L-shaped flange, 109...Second channel flange, 110...Gap, 111...Gap, 112...Second steel pipe column, 114...Second diaphragm, 115... third flange, 116... third L-shaped flange, 117... third grooved flange, 118... fourth L-shaped flange, 119... fourth grooved flange, 120... gap,
121... Gap, 122... Bolt hole, 124... Through hole, 126... Rib, 130... First splint plate, 132... Second splint plate, 140... Third splint, 142... Fourth splint, 150... Opening, 152... Bolt, 154... Nut, 160... First region, 162... Notch part, 170... second region, 172... notch part

Claims (12)

a first diaphragm provided at one end of the first steel pipe column;
a first L-shaped flange and a second L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the first steel pipe column and are joined to the surface of the first diaphragm;
a second diaphragm provided at one end of the second steel pipe column;
a third L-shaped flange and a fourth L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the second steel pipe column and are joined to the surface of the second diaphragm;
a first splint and a second splint;
including;
The first steel pipe column and the second steel pipe column are arranged in a vertical direction,
the first L-shaped flange and the second L-shaped flange are spaced apart,
the third L-shaped flange and the fourth L-shaped flange are spaced apart,
The first L-shaped flange and the third L-shaped flange are bolted together via the first splint,
The second L-shaped flange and the fourth L-shaped flange are bolted together via the second splint ,
surrounded by the first L-shaped flange and the third L-shaped flange, the second L-shaped flange and the fourth L-shaped flange, the first diaphragm, and the second diaphragm. It has an opening that can be used as a hand hole.
A steel pipe column joint structure characterized by: The first L-shaped flange and the third L-shaped flange have their respective flange surfaces flush with each other,
The second L-shaped flange and the fourth L-shaped flange have respective flange surfaces arranged flush with each other,
The joint structure of a steel pipe column according to claim 1. The first steel pipe column and the second steel pipe column are square steel pipe columns,
The first L-shaped flange and the second L-shaped flange are provided corresponding to the corners of the first steel pipe column,
The joint structure for a steel pipe column according to claim 1 or 2 , wherein the third L-shaped flange and the fourth L-shaped flange are provided corresponding to corners of the second steel pipe column. a first diaphragm provided at one end of the first steel pipe column;
a first L-shaped flange and a second L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the first steel pipe column and are joined to the surface of the first diaphragm;
a second diaphragm provided at one end of the second steel pipe column;
a third flange whose flange surface is arranged parallel to the material axis direction of the second steel pipe column and is joined to the surface of the second diaphragm;
a first splint and a second splint;
including;
The first steel pipe column and the second steel pipe column are arranged in a vertical direction,
the first L-shaped flange and the second L-shaped flange are spaced apart,
The first L-shaped flange is bolted to the third flange via the first splint, and the second L-shaped flange and the third flange are connected via the second splint. bolted together ,
It has an opening that can be used as a hand hole and is surrounded by the first L-shaped flange, the second L-shaped flange, the third flange, and the first diaphragm.
A steel pipe column joint structure characterized by: The steel pipe column joint structure according to claim 4 , wherein the first L-shaped flange, the second L-shaped flange, and the third flange are arranged so that their respective flange surfaces are flush with each other. The first steel pipe column and the second steel pipe column are square steel pipe columns,
The first L-shaped flange and the second L-shaped flange are provided corresponding to the corners of the first steel pipe column,
The joint structure for a steel pipe column according to claim 4 or 5, wherein the third flange is provided corresponding to one surface of the second steel pipe column. a first diaphragm provided at one end of the first steel pipe column;
a first groove-shaped flange and a second groove-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the first steel pipe column, and whose both ends are groove-shaped in the same direction;
a second diaphragm provided on a second steel pipe column;
a third groove-shaped flange and a fourth groove-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the second steel pipe column, and whose both ends are bent in a groove shape in the same direction;
a first splint and a second splint;
including;
The first steel pipe column and the second steel pipe column are arranged in a vertical direction,
The first groove-shaped flange and the second groove-shaped flange are welded onto the surface of the first diaphragm so that bent ends thereof are separated and face each other in a first direction,
The third groove-shaped flange and the fourth groove-shaped flange are welded onto the surface of the second diaphragm so that bent ends thereof are spaced apart and face each other in the second direction,
The first direction and the second direction are intersecting directions,
The first groove-shaped flange and the third groove-shaped flange are bolted together via the first splint,
The second groove-shaped flange and the third groove-shaped flange are bolted together via the second splint ,
a first opening that can be used as a hand hole surrounded by the first channel flange, the second channel flange, the third channel flange, and the first diaphragm;
a second opening that can be used as a hand hole surrounded by the third channel flange, the fourth channel flange, the second channel flange, and the second diaphragm;
A steel pipe column joint structure characterized by: The first groove-shaped flange and the third groove-shaped flange are arranged so that their respective flange surfaces are flush with each other,
8. The joint structure for a steel pipe column according to claim 7 , wherein the second groove flange and the fourth groove flange have respective flange surfaces arranged flush with each other. The joint structure for a steel pipe column according to claim 7 , wherein the first opening and the second opening are arranged in an oblique manner. The first steel pipe column and the second steel pipe column are square steel pipe columns,
The first groove-shaped flange and the second groove-shaped flange are provided with bent ends corresponding to corners of the first steel pipe column,
The third groove-shaped flange and the fourth groove-shaped flange are provided with bent ends corresponding to corners of the second steel pipe column. Joint structure of steel pipe columns described in . The joint structure for a steel pipe column according to any one of claims 1 to 10 , wherein a through hole is provided in one or both of the first diaphragm and the second diaphragm. a first steel pipe column having a first region provided with a plurality of first bolt holes at one end in the material axis direction;
a second steel pipe column having a second region provided with a plurality of second bolt holes at one end in the material axis direction;
a first splint, a second splint, a third splint, and a fourth splint;
including;
The first steel pipe column further includes a third region adjacent to the first region and provided with a plurality of third bolt holes,
The second steel pipe column further includes a fourth region adjacent to the second region and provided with a plurality of fourth bolt holes,
The first steel pipe column and the second steel pipe column are arranged in a vertical direction such that the first region and the fourth region are adjacent to each other, and the second region and the third region are adjacent to each other. placed in
The first region has a first notch formed by cutting out an end of the first steel pipe column, and the plurality of first bolt holes are arranged on both sides of the first notch. provided on both sides,
The second region has a second notch formed by cutting out an end of the second steel pipe column, and the plurality of second bolt holes are arranged on both sides of the second notch. provided on both sides,
The first splint plate and the second splint plate are arranged in the first region with the first notch sandwiched therebetween.
and in contact with the fourth region,
The third splint and the fourth splint abut on the second region and the fourth region with the second notch in between,
The first steel pipe column and the second steel pipe column are bolted together via the first splint, the second splint, the third splint, and the fourth splint. and
The first notch portion and the second notch portion are arranged in a diagonal shape.
A steel pipe column joint structure characterized by:

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