JP7317622B2 - 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.

Welding and bolting are used as methods for joining steel frame members at construction sites of buildings. Welded joints can ensure sufficient strength, but on the other hand, they require a high degree of skill and work time, and the quality and performance are also affected by the skill of the workers. On the other hand, bolt connection has the advantage 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 an H-shaped steel and a method of joining steel pipe columns together are disclosed (see Patent Documents 1 and 2).

Japanese Patent Application Laid-Open No. 5-179702 (Patent No. 3122209) Japanese Patent Application Laid-Open No. 2004-293196 (Patent No. 4038449)

When joining steel members with bolts, members having an open cross-sectional shape such as H-shaped steel can be easily joined with bolts. However, when bolting to connect tubular members such as square steel pipe columns, there is a problem that it cannot be performed easily. Although it is conceivable to process a part of the steel pipe column in order to facilitate the construction of the building, there is concern that this will reduce the strength of the joint.

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

A steel pipe column joint structure according to an embodiment of the present invention includes a first steel pipe column having a first through hole in its side surface, a second steel pipe column having a second through hole in its side surface, and a first A splint plate, a second splint plate, a first reinforcing plate having a first opening, and a second reinforcing plate having a second opening. A first reinforcing plate is provided in contact with the first steel pipe column so that the first opening overlaps the first through hole, and the second steel pipe column has the second opening in the second through hole. A second reinforcing plate is provided in contact so as to overlap. The first steel pipe column and the second steel pipe column are arranged in the vertical direction, the first splint plate is adjacent to the first reinforcing plate, and the boundary between the first steel pipe column and the second steel pipe column The second splint plate is provided in contact with the side surfaces of the first steel pipe column and the second steel pipe column, adjacent to the second reinforcing plate, and the boundary between the first steel pipe column and the second steel pipe column It is provided in contact with the side surface of the first steel pipe column and the second steel pipe column. The first steel pipe column and the second steel pipe column are bolted via a first splint plate and a second splint plate, and the first through-hole and the second through-hole are slanted. placed.

According to the joint structure of steel pipes according to one embodiment of the present invention, it becomes easy to join steel pipe columns with bolts. Furthermore, according to the steel pipe column joint structure according to the embodiment of the present invention, it is possible to prevent a decrease in the strength of the bolted portion.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the joint structure of the steel pipe column which concerns on one Embodiment of this invention, (A) shows a development view, (B) shows the 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 which concerns on one Embodiment of this invention is shown. FIG. 3 shows a cross-sectional structure of a bolt joint in the steel pipe column joint structure shown in FIG. 2 . The front view of the bolt joint part in the joint structure of the steel pipe column which concerns on one Embodiment of this invention is shown. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the joint structure of the steel pipe column which concerns on one Embodiment of this invention, (A) shows a development view, (B) shows the bolt joint in the joint structure of two steel pipe columns. FIG. 6 shows a cross-sectional structure of a bolt joint in the steel pipe column joint structure shown in FIG. 5 . BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the joint structure of the steel pipe column which concerns on one Embodiment of this invention, (A) shows a development view, (B) shows the bolt joint in the joint structure of two steel pipe columns. FIG. 8 shows a cross-sectional structure of a bolt joint in the steel pipe column joint structure shown in FIG. 7 ; BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the joint structure of the steel pipe column which concerns on one Embodiment of this invention, (A) shows a development view, (B) shows the 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 which concerns on one Embodiment of this invention is shown. FIG. 10 shows a cross-sectional structure of a bolted joint in the steel pipe column joint structure shown in FIG. 9 ; FIG.

Hereinafter, the contents of embodiments of the present invention will be described with reference to the drawings and the like. However, the present invention includes many different aspects and should not be construed as being limited to the content of the embodiments illustrated below. In order to make the description clearer, the drawings may schematically show the width, thickness, shape, etc. of each part compared to the actual embodiment, but this is only an example and does not limit the content of the present invention. not something to do. In addition, in this specification, when a certain element described in a certain drawing and a certain element described in another drawing are the same or have a corresponding relationship, the same reference numerals (or numbers Reference numerals such as a, b, etc. are attached later, and repeated description may be omitted as appropriate. Further, the letters "first" and "second" for each element are convenient labels used to distinguish each element and have no further meaning unless otherwise specified.

[First embodiment]
A steel pipe column joint structure 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 joined by bolting. The joint structure will be described in detail below. In this embodiment, as a type of steel pipe column, a joint structure in the case of a square steel pipe column will be exemplified.

FIG. 1(A) shows a developed view of a joint portion in the joint structure for steel pipe columns according to this embodiment, and FIG. 1(B) shows a perspective view of the joint structure for steel pipe columns according to this embodiment. Fastening members such as bolts and nuts are omitted in FIG.

FIGS. 1A and 1B show a case where the first steel pipe column 102 and the second steel pipe column 112 have rectangular cross-sectional shapes. In the following description, for the sake of convenience, the first steel pipe column 102 has four planes, which are denoted counterclockwise as the first plane 11, the second plane 12, the third plane 13, and the fourth plane 14. , and the planes of the second steel pipe column 112 are likewise indicated counterclockwise by first surface 21, second surface 22, third surface 23, and fourth surface 24, respectively. Also, unless otherwise specified, the first steel pipe column 102 is arranged on the lower side in the material axial direction, and the second steel pipe column 112 is arranged on the upper side.

As shown in FIG. 1A, the first steel pipe column 102 is provided with a first notch 106a and a second notch 106b at one end. The first notch portion 106a is formed by removing one end of the second surface 12 of the first steel pipe column 102 over a predetermined length in the axial direction, and the second notch portion 106b is It is formed by removing one end of the fourth surface 14 over a predetermined length in the material axial direction. At one end of the first steel pipe column 102, a first notch portion 106a and a second notch portion 106b are formed. A first projecting portion 104a and a second projecting portion 104b are provided. That is, the first protrusion 104a of the first steel pipe column 102 is formed on the first surface 11 of the first steel pipe column 102, and the second protrusion 104b is formed on the third surface of the first steel pipe column 102. It is formed on 13 sides.

The second steel pipe column 112 is provided with a first notch portion 116a and a second notch portion 116b at one end. The first notch portion 116a is formed by removing one end of the first surface 21 of the second steel pipe column 112 over a predetermined length in the axial direction, and the second notch portion 116b is It is formed by removing one end of the third surface 23 facing the first surface 21 over a predetermined length in the axial direction. At one end of the second steel pipe column 112, a first notch portion 116a and a second notch portion 116b are formed. A first projecting portion 114a and a second projecting portion 114b are provided. That is, the second protrusion 114 a is formed on the second surface 22 of the second steel pipe column 112 , and the second protrusion 104 b of the first steel pipe column is provided on the fourth surface 24 .

The first steel pipe column 102 is provided with a plurality of first bolt holes 108a in a region forming the first projecting portion 104a of the first surface 11, and is adjacent to the first notch portion 106a of the second surface 12. A plurality of second bolt holes 108b are provided in the region where Although not shown in FIG. 1A, the third surface 13 and the fourth surface 14 of the first bolt hole are the same. The second steel pipe column 112 is provided with a plurality of first bolt holes 118a in a region adjacent to the first cutout portion 116a of the first surface 21 to form the first projecting portion 114a of the second surface 22. A plurality of second bolt holes 118b are provided in the area where the second bolt holes 118b are formed (the same applies to the third surface 23 and the fourth surface 24). The first bolt hole 108a and the second bolt hole 108b of the first steel pipe column and the first bolt hole 118a and the second bolt hole 118b of the second steel pipe column 112 have diameters through which bolts can be inserted. It is a through hole that has and penetrates the steel pipe column.

The first splint plate 130a and the second splint plate 130b are arranged outside the first steel pipe column 102 and the second steel pipe column 112, and the splint plate 140a facing the first splint plate, the second splint plate 140a, and the second splint plate 130b. A splint 140 b facing the plate is placed inside the first steel pipe column 102 and the second steel pipe column 112 . The first splint plate 130 a has bolt holes 132 a in the first splint plate corresponding to the first bolt holes 108 a of the first steel pipe column 102 and the first bolt holes 118 a of the second steel pipe column 112 . A second splint 130b is provided to accommodate the second bolt hole 108b in the first tubular steel column 102 and the second bolt hole 118b in the second tubular steel column 112. A hole 132b is provided. A splint plate 140a facing the first splint plate has bolt holes 142a corresponding to the first bolt holes 108a of the first steel pipe column 102 and the first bolt holes 118a of the second steel pipe column. A splint plate 140 b provided opposite to the second splint plate has bolts corresponding to the second bolt holes 108 b of the first steel pipe column 102 and the second bolt holes 118 b of the second steel pipe column 112 . A root hole 142b is provided.

The first steel pipe column 102 has a first through hole 120a and a third through hole 120c. The first through hole 120a is provided adjacent to the first projecting portion 104a on the first surface 11, and the third through hole 120c is provided adjacent to the second projecting portion 104b on the third surface 13. provided in The second steel pipe column 112 has a second through hole 120b and a fourth through hole (not shown). A second through hole 120b is provided adjacent to the first protrusion 114a on the second surface 22, and a fourth through hole (not shown) is provided on the fourth surface 24 adjacent to the second protrusion 114b. is provided adjacent to the

The first steel pipe column 102 is provided with a first reinforcing plate 122 a on the first surface 11 and a third reinforcing plate (not shown) on the third surface 13 . The first reinforcing plate 122a has a first opening 124a and the third reinforcing plate (not shown) has a third opening 124c. The first reinforcing plate 122a is provided so that the first opening 124a overlaps with the first through hole 120a, and the third reinforcing plate (not shown) is provided so that the third opening 124c overlaps with the third through hole 120a. It is provided so as to overlap with the through hole 120c. The second steel pipe column 112 is provided with a second reinforcing plate 122b on the second face 22 and a fourth reinforcing plate (not shown) on the fourth face 24 . The second reinforcing plate 122b has a second opening 124b and the fourth reinforcing plate (not shown) has a fourth opening (not shown). The second reinforcing plate 122b is provided such that the second opening 124b overlaps the second through hole 120b. Also, although not shown, the fourth reinforcing plate is provided so that the fourth opening overlaps the fourth through hole.

The shape of the first opening 124a is not limited, but it has a size that does not block the first through hole 120a. For example, as shown, first opening 124a may have substantially the same diameter as first through-hole 120a. The same applies to the second opening 124b and the second through hole 120b, the third opening 124c and the third through hole 120c, and the fourth opening and the fourth through hole (not shown).

When the first steel pipe column 102 and the second steel pipe column 112 are spliced together, the first reinforcing plate 122a and the first splint plate 130a are provided on the same surface (first surface 11 and first surface 21). , both have sizes that do not interfere. The first reinforcement plate 122a and the first attachment plate 130a may be arranged so that their opposing ends are in contact with each other, or may be arranged apart from each other. Such a relationship is the same for the second reinforcement plate 122b and the second support plate 130b.

The first reinforcing plate 122 a is joined with the first steel pipe column 102 and the second reinforcing plate 122 b is joined with the second steel pipe column 112 . For example, the peripheral edge of the first reinforcing plate 122a is joined to the first steel pipe column 102 by welding, and the peripheral edge of the second reinforcing plate 122b is joined to the second steel pipe column 112 by welding.

As shown in FIG. 1B, the first protruding portion 104a and the second protruding portion 104b of the first steel pipe column 102 and the first notch portion 116a and the second notch portion of the second steel pipe column 112 The notch portion 116b, the first notch portion 106a of the first steel pipe column 102 , the second notch portion 106b, and the first projecting portion 114a, the second projecting portion 114b of the second steel pipe column 112 Matingly provided. Then, the first splint plate 130a and the second splint plate 130b are applied from the outside, the splint plate 140a facing the first splint plate and the splint plate 140b facing the second splint plate are applied from the inside, A first bolted joint portion 100a and a second bolted joint portion 100b are formed by being sandwiched between two splint plates. Although not shown in FIG. 1(B), bolted joints are formed on each surface of the steel pipe column (four surfaces in the square steel pipe column). As shown, the first through hole 120a is positioned adjacent the first bolted joint 100a and the second through hole 120b is positioned adjacent the second bolted joint 100b. .

First steel pipe column 102, second steel pipe column 112, first reinforcing plate 122a, second reinforcing plate 122b, first splint plate 130a , second splint plate 130b, facing the first splint plate The splint plate 140a facing and the splint plate 140b facing the second splint plate are made of steel material. For example, these members are formed from rolled structural steel. FIG. 1(A) shows the first steel pipe column 102 and the second steel pipe column 112, the first splint plate 130a and the second splint plate 130b are arranged on the outer side surface, and the first splint plate is arranged on the inner side surface. A splint plate 140a facing the splint plate and a splint plate 140b facing the second splint plate are arranged to sandwich from both the outer and inner sides. It is also possible to omit the contact plate.

FIG. 2 shows a front view of the joint structure of the steel pipe column according to the present embodiment. A 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, and a second bolt joint is formed on the second surface 12 and the second surface 22. A portion 100b is formed, and a third bolt joint portion 100c is formed on the third surface 13 and the third surface 23. As shown in FIG. At the first bolt joint 100a, the first splint 130a and the splint 140a facing the first splint are sized to contact both the first steel pipe column 102 and the second steel pipe column 112. have. The first splint plate 130a contacts the first steel pipe column 102 and the second steel pipe column 112 from the outer side surface, and the splint plate 140a facing the first splint plate contacts from the inner side surface, thereby fastening. It is fastened by tools (bolt 150 and nut 152). Such a configuration also applies to the second bolted joint 100b and the third bolted joint 100c.

As described with reference to FIGS. 1(A) and 1(B) , the first bolt joint is formed by arranging the projecting portion and the notch portion of the steel pipe column arranged above and below to fit each other. The height of the portion 100a and the third bolted joint 100c is arranged to be different from the height of the second bolted joint 100b. As shown in FIG. 2, the second bolted joint 100b is formed at a lower position than the first bolted joint 100a and the third bolted joint 100c. The second surface 22 of the second steel column 112 has a second through hole sandwiched between the first bolted joint 100a and the third bolted joint 100c and adjacent to the second bolted joint 100b. A hole 120b and a second reinforcing plate 122b are provided. On the other hand, the first through hole 120a and the first reinforcing plate 122a, and the third through hole 120c and the third reinforcing plate 122c provided in the first steel pipe column 102 are the second through hole 120b and It is provided at a lower position than the second reinforcing plate 122b. The steel pipe column joint structure according to the present embodiment is arranged such that the height of the bolt joint 100 and the positions of the through holes 120 and the reinforcing plates 122 are different on adjacent surfaces. By arranging the first bolted joint 100a and the second bolted joint 100b obliquely in this way, it is possible to increase the resistance to the shearing force acting on the steel pipe column and the bending stress.

As shown in FIG. 2, by arranging a plurality of through holes having different heights (for example, the second through hole 120b) for one bolt joint (for example, the second bolt joint 100b) On the other hand, the first through-hole 120a and the third through-hole 120c are arranged at a lower position), and the operator can easily join the first steel pipe column 102 and the second steel pipe column 112 together. Become. That is, a worker can easily perform bolt joint by inserting a tool or the like from a plurality of through holes at a construction site. For example, when constructing the second bolt joint 100b, the worker inserts a tool or the like from not only the second through hole 120b but also the first through hole 120a and the third through hole 120c. It can be performed. In this case, since the first through-hole 120a and the third through-hole 120c are arranged at different heights with respect to the second through-hole 120b, a tool or the like can be inserted into the steel pipe column from various angles. It becomes possible to insert it, and the degree of freedom of work can be increased.

FIG. 3(A) shows the cross-sectional structure of the portion sandwiched by arrows A1 and A2 in FIG. 2, and FIG. 3(B) shows the portion sandwiched by arrows B1 and B2 in FIG. 2 when viewed in cross section. shows the cross-sectional structure of

As shown in FIG. 3A, the second steel pipe column 112 has a second through hole 120b and a fourth through hole 120b so as to be sandwiched between the first bolt joint 100a and the third bolt joint 100c. It has a hole 120d. Further, as shown in FIG. 3B, the first steel pipe column 102 is sandwiched between the second bolt joint 100b and the fourth bolt joint 100d through the first through hole 120a and the third bolt joint 100d. through-hole 120c. By providing the first to fourth through holes 120a, 120b, 120c, and 120d adjacent to the portions where the first to fourth bolt joints 100a, 100b, 100c, and 100d are formed, The cross-sectional areas of the first steel pipe column 102 and the second steel pipe column 112 are relatively smaller than other portions. As a result, there is concern that the strength of the steel pipe column will decrease. In order to suppress the deterioration of the strength of the steel pipe column, it is conceivable to reduce the number of through-holes or to reduce the diameter of the through-holes.

On the other hand, in this embodiment, as shown in FIG. A fourth reinforcing plate 122d is provided in alignment with the through hole 120d. Then, as shown in FIG. 3B, the first steel pipe column 102 is provided with a first reinforcing plate 122a aligned with the first through hole 120a, and a third reinforcement plate aligned with the third through hole 120c. 3 reinforcing plates 122c are provided. With such a configuration, it is possible to compensate for a reduction in strength (rigidity) against shearing force, bending stress, and axial stress due to the provision of through holes in the steel pipe column.

Note that the thicknesses of the first to fourth reinforcing plates 122a, 122b, 122c, and 122d are appropriately set. For example, it can be substantially the same as the thickness of the first steel pipe column 102 and the second steel pipe column 112, or can have a thickness greater than that. In order to compensate for the decrease in strength due to the provision of through-holes in the steel pipe columns, the cross-sectional area of the reinforcing plate and the cross-sectional area of the steel pipe columns provided with the through-holes are adjusted so that the relationship shown in formula (1) is satisfied. should be
[Cross-sectional area of reinforcing plate] ≥ [Cross-sectional area of through-hole of steel pipe column provided with through-hole] (1)
In formula (1), the cross-sectional area of the reinforcing plate refers to the cross-sectional area at the maximum diameter portion that intersects the material axial direction of the first steel pipe column 102 at the opening, and the steel pipe provided with the through hole The cross-sectional area of the column refers to the cross-sectional area at the maximum diameter portion that intersects the material axial direction of the first steel pipe column 102 in the through hole.

Further, the relationship represented by the above formula (1) can be expressed by the formula (2).
[Cross-sectional area of general portion of steel pipe (portion without through-hole)] ≤ [Cross-sectional area of steel pipe and reinforcing plate at maximum diameter of through-hole] (2)
In any case, the thicknesses of the first to fourth reinforcing plates 122a, 122b, 122c, and 122d may satisfy the relationship of formula (1) or formula (2).

The first to fourth reinforcing plates 122a, 122b, 122c, 122d may be joined to the inner side surfaces of the first steel pipe column 102 and the second steel pipe column 112, respectively, or may may be provided on both sides of the side surface of the In any case, as exemplified in this embodiment, the peripheral edges of the first reinforcing plate 122a and the third reinforcing plate 122c are welded to the first steel pipe column 102, and the second reinforcing plate By joining the peripheral ends of the plate 122b and the fourth reinforcing plate 122d to the second steel pipe column 112 by welding, substantially the same effect as increasing the wall thickness of each steel pipe column can be obtained. can be done. That is, by providing a reinforcing plate so as to surround the through-hole provided in the steel pipe column, it is possible to increase the substantial thickness of the area surrounding the through-hole, and the joint can be connected by bolting. It is possible to prevent a decrease in the strength (rigidity) of the formed portion.

The first opening 124a provided in the first reinforcing plate 122a has a diameter substantially equal to or larger than that of the first through-hole 120a, so that the workability due to the provision of the through-hole is not affected. can be made This also applies to other reinforcing plates (second reinforcing plate 122b, third reinforcing plate 122c, fourth reinforcing plate 122d).

FIGS. 1A and 1B exemplify a mode in which one through-hole is provided on each surface of the steel pipe column, but one embodiment of the present invention is not limited to such a mode only, and the steel pipe column A plurality of through-holes can also be provided on each surface. Even in such a case, it is possible to prevent a decrease in the strength (rigidity) of the steel pipe column by providing a reinforcing plate corresponding to each of the plurality of through holes.

As described above, according to the present embodiment, when the first steel pipe column 102 and the second steel pipe column 112 are spliced together, by providing a through hole in each steel pipe column, the workability of bolting can be improved. By providing a reinforcing plate having openings corresponding to the through-holes, it is possible to suppress a decrease in the strength of the joint portion and obtain strength equal to or greater than that of other portions of the steel pipe column. Although this embodiment shows a joint structure of steel pipes, one embodiment of the present invention is not limited to this aspect, and can be applied equally to circular steel pipes and deformed steel pipes.

[Second embodiment]
This embodiment shows a mode in which the configuration of the reinforcing plate is different from that of the first embodiment. In the following, the description will focus on the parts that are different from the first embodiment.

FIG. 4 shows a front view of a joint structure for steel pipe columns according to the present embodiment. The arrangement of the first reinforcing plate 122a, the second reinforcing plate 122b, and the third reinforcing plate 122c is the same as in the first embodiment. On the other hand, as shown in FIG. 4, the sizes of the first reinforcing plate 122a, the second reinforcing plate 122b, and the third reinforcing plate 122c are different from those in the first embodiment.

Specifically, the length L2 of the second reinforcing plate 122b (length in the material axial direction of the second steel pipe column) is equal to the length of the end ED2 (one side crossing the material axial direction of the second steel pipe column 112) end) of the second steel pipe column 112 is farthest from the ends of the first bolt hole 118a and the third bolt hole 118c (the ends of the first notch 116a and the second notch 116b). It is sized to protrude outward by a length k2 from the end of the bolt hole located at the bottom). Although not shown in FIG. 4 , the same applies to the fourth reinforcing plate provided on the fourth face 24 of the second steel pipe column 112 . In addition, as shown in FIG. 4, the length k2 is the end portion of the first cutout portion 116a and the second cutout portion 116b of the plurality of second bolt holes 118a and third bolt holes 118c. can be defined as the distance from the end of the bolt hole furthest from

The second steel pipe column 112 has a second through hole 120b formed on the second surface 22, a plurality of first bolt holes 118a on the first surface 21 and the third surface 23, and a third bolt hole 118b on the third surface 23. A bolt hole 118c is formed. Therefore, the substantial cross-sectional area of the second steel pipe column 112 is reduced, and there is concern that the strength of the joint portion may be reduced. However, by arranging the end ED2 of the second reinforcing plate 122b beyond the ends of the first bolt hole 118a and the third bolt hole 118c of the second steel pipe column 112, the second In addition to supplementing the strength of the portion where the through hole 120b is provided, the strength of the portion where the bolt hole is provided on the adjacent surface can also be supplemented.

This also applies to the first steel pipe column 102 . That is, the first reinforcing plate 122a is arranged so that the position of the first opening 124a overlaps with the first through hole 120a, and is joined to the first steel pipe column 102. As shown in FIG. The length L1 of the first reinforcing plate 122a (the length in the material axial direction of the first steel pipe column) is such that the end ED1 (the end of one side that intersects the material axial direction of the first steel pipe column 102) is It has a size that protrudes outward by a length k1 from the end of the second bolt hole 108b of the first steel pipe column 102 . As a result, the strength of the portion provided with the first through hole 120a can be compensated, and the strength of the portion provided with the bolt hole on the adjacent surface can also be compensated. The same applies to the third reinforcing plate 122c. As shown in FIG. 4, the length k1 is the first notch 106a of the first steel pipe column 102 and the second bolt hole 108c of the plurality of first bolt holes 108a and third bolt holes 108c It can be defined as the distance from the end of the bolt hole that is furthest from the end of the notch 106b.

On the other hand, the second reinforcement plate 122b and the second attachment plate 130b may be arranged so that their opposing ends are in contact with each other, or may be arranged apart from each other. Such a relationship is the same for the first reinforcement plate 122a and the first support plate 130a, and the third reinforcement plate 122c and the third support plate 130c.

The length by which the reinforcing plate protrudes from the support plate can be set arbitrarily. Moreover, although not shown, the same effect can be obtained even if the end portion of the reinforcing plate and the end portion of the attachment plate are provided so as to substantially coincide with each other. In any case, as described above, in the joint structure of the steel pipe column according to the present embodiment, for example, the first reinforcing plate 122a has the length L1 and the second reinforcing plate 122b has the length L2 ( The same applies to the third reinforcing plate 122c and the fourth reinforcing plate), so that the joint portion can be highly resistant to bending stress and shearing force.

The joint structure of the steel pipe column of this embodiment is the same as that of the first embodiment except that the structure of the reinforcing plate is different. Therefore, the joint structure of the steel pipe column according to the present embodiment can compensate for the decrease in strength due to the formation of the bolt hole, in addition to exhibiting the same effect as the first embodiment.

[Third embodiment]
This embodiment shows a mode in which the configurations of the notch and the projecting portion are different from those of the first embodiment. In the following, the description will focus on the parts that are different from the first embodiment.

FIG. 5(A) shows a developed view of the joint portion of the steel pipe column according to the present embodiment, and FIG. 5(B) shows a perspective view of the joint portion of the steel pipe column. 6(A) and 6(B) show cross-sectional structures of the C1 portion and the C2 portion shown in FIG. 5(B). Fasteners such as bolts and nuts are omitted in FIG. 5(A).

As shown in FIG. 5A, the first steel pipe column 102 is provided with a first notch portion 106a and a second notch portion 106b on the second surface 12 and the third surface 13. A first protrusion 104a and a second protrusion 104b projecting from the recessed end are provided on the first surface 11 and the fourth surface 14 when the recessed end is used as a reference. The second steel pipe column 112 is provided with a first notch 116a and a second notch 116b on the first surface 21 and the fourth surface 24, and the end recessed by these notches is used as a reference. Then, the second surface 22 and the third surface 23 are provided with the first projecting portion 114a and the second projecting portion 114b projecting from the retreated end portion. Thus, the first cutout portion 106a and the second cutout portion 106b are formed so as to cut out two continuous surfaces of the first steel pipe column 102, and the first cutout portion 116a and the second cutout portion 116a The notch portion 116 b is formed so as to notch two continuous surfaces of the second steel pipe column 112 .

The first notch portion 106a and the second notch portion 106b of the first steel pipe column 102, the first projecting portion 114a and the second projecting portion 114b of the second steel pipe column 112 , and the first steel pipe column The first protrusion 104a and the second protrusion 104b of 102 and the first notch 116a and the second notch 116b of the second steel pipe column 112 are provided so as to fit together. Then, a first splint plate 130a and a second splint plate 130b are applied from the outside, and a splint plate 140a facing the first splint plate and a splint plate 140b facing the second splint plate are applied from the inside. A first bolted joint portion 100a and a second bolted joint portion 100b are formed by being sandwiched between attachment plates. Although not shown in FIG. 5B, bolted joints are formed on each side (four sides) of the steel pipe column. The first bolted joint portion 100a and the second bolted joint portion 100b are formed to have different heights. By arranging the first bolted joint 100a and the second bolted joint 100b obliquely in this way, it is possible to increase the resistance to the shearing force acting on the steel pipe column and the bending stress.

As shown in FIG. 6A, the second steel pipe column 112 is provided with a second through hole 120b on the second surface 22 and a third through hole 120c on the third surface 23. As shown in FIG. The second steel pipe column 112 is provided with a second reinforcing plate 122b on the second surface 22 aligned with the position of the second through hole 120b, and on the third surface 23 aligned with the position of the third through hole 120c. A third reinforcing plate 122c is provided. Further, as shown in FIG. 6B, the first steel pipe column 102 is provided with a first through hole 120a on the first surface 11 and a fourth through hole 120d on the fourth surface 14. . The first steel pipe column 102 is provided with a first reinforcing plate 122a on the first surface 11 aligned with the position of the first through hole 120a, and aligned with the position of the fourth through hole 120d on the fourth surface 14. A second reinforcing plate 122d is provided at the end.

As shown in FIGS. 6(A) and 6(B) , even with a configuration in which notches are provided on two adjacent surfaces of the steel pipe column (in other words, protrusions are provided on two adjacent surfaces), A through hole can be provided on each surface of the steel pipe column. In this case also, as shown in FIG. 5B, through-holes (first through-hole 120a, second through-hole 120b) having different heights can be provided on adjacent surfaces of the steel pipe column.

By arranging a plurality of through-holes 120 having different heights in one bolt joint 100 in this way, the operator can join the first steel pipe column 102 and the second steel pipe column 112 together. work becomes easier. In this case, for example, since the heights of the first through-hole 120a and the second through-hole 120b are different, the first bolt joint 100a and the second bolt joint 100b extending in the vertical direction are Even when bolting, the work can be easily performed regardless of the vertical position. For example, when fastening the first bolt joint portion 100a with a bolt, the operator can perform work by inserting a tool or the like not only through the first through-hole 120a but also through the second through-hole 120b. .

Also in this embodiment, when the first steel pipe column 102 and the second steel pipe column 112 are spliced together, by providing a through hole in each steel pipe column, it is possible to improve workability of bolt connection. Furthermore, by providing a reinforcing plate in alignment with the through hole, it is possible to suppress a decrease in the strength of the joint portion and obtain strength equal to or greater than that of other portions of the steel pipe column. It should be noted that this embodiment can be implemented by appropriately incorporating the configuration of the second embodiment.

[Fourth embodiment]
This embodiment shows a mode in which the configuration of the cutout portion and the projecting portion is different from those of the first embodiment and the second embodiment. In the following, the description will focus on the parts that are different from the first embodiment.

FIG. 7(A) shows a developed view of the joint portion of the steel pipe column according to the present embodiment, and FIG. 7(B) shows a perspective view of the joint portion of the steel pipe column. 8(A) and 8(B) show the cross-sectional structures of the D1 portion and the D2 portion shown in FIG. 7(B). Fasteners such as bolts and nuts are omitted in FIG. 7(A).

FIG. 7(A) shows a configuration in which the configuration of the notch portion is different from those of FIGS. 1(A) and 5(A). The configuration shown in FIG. 7A is provided so as to cut three surfaces (second surface 12, third surface 13, fourth surface 14) of the first steel pipe column 102, and the second steel pipe column 112 1 shows a mode in which a first notch portion 116a is provided on the first surface 21 of the . The first steel pipe column 102 has a first protrusion 104 a on the first surface 11 , and the second steel pipe column 112 has a second protrusion 114 b on the second surface 22 and a second protrusion 114 b on the third surface 23 . 3 , and the fourth surface 24 is provided with a fourth protrusion 114d.

As shown in FIG. 7B, the first protruding portion 104a of the first steel pipe column 102 and the first notch portion 116a of the second steel pipe column 112 are arranged to mesh with each other. In the first steel pipe column 102 and the second steel pipe column 112, as described above, one surface (or part) of one steel pipe column is provided with a notch portion, and the other steel pipe column has a projection on the corresponding surface. As a configuration in which portions are provided, the first bolt connection portion 100a, the second bolt connection portion 100b, the third bolt connection portion 100c, and the fourth bolt connection portion 100d can be arranged obliquely. . Also, the height of the first through-hole 120a can be different from that of the second through-hole 120b, the third through-hole 120c, and the fourth through-hole 120d.

Thus, also in the present embodiment, when joining the first steel pipe column 102 and the second steel pipe column 112, by providing the through hole 120 in each steel pipe column, the workability of bolt connection can be improved. . Furthermore, by providing the reinforcing plate 122 in accordance with the through hole 120, it is possible to suppress the decrease in the strength of the joint portion and obtain strength equal to or greater than that of other portions of the steel pipe column. It should be noted that this embodiment can be implemented by appropriately incorporating the configuration of the second embodiment.

[Fifth Embodiment]
This embodiment shows an example in which a third reinforcing plate is further provided in the steel pipe column joint structure shown in the first embodiment. In the following, the description will focus on the parts that are different from the first embodiment.

FIG. 9A shows a development view of a joint portion in the joint structure for steel pipe columns according to this embodiment, and FIG. 9B shows a perspective view of the joint structure for steel pipe columns according to this embodiment. Fastening members such as bolts and nuts are omitted in FIG. 9(A).

As shown in FIG. 9A, the first inner reinforcing plate 160a is provided inside the first steel pipe column 102. As shown in FIG. The first inner reinforcing plate 160 a is erected in a direction parallel to the material axis direction of the first steel pipe column 102 and is provided so as to be inscribed with the inner side surfaces of the first surface 11 and the third surface 13 . The first inner reinforcing plate 160a is provided in a region overlapping with the first through-hole 120a and the third through-hole 120c. The second steel pipe column 112 is similarly provided with a second inner reinforcing plate 160b.

As shown in FIG. 9B, the first inner reinforcing plate 160a and the second inner reinforcing plate 160b are exposed to the outside even after the first steel pipe column 102 and the second steel pipe column 112 are spliced together. It is provided so as to be housed inside the steel pipe column.

FIG. 10 shows a front view of a joint structure for steel pipe columns according to the present embodiment. Inside the first steel pipe column 102, a first inner reinforcing plate 160a is provided at the same height as the portion where the first through-hole 120a and the third through-hole 120c are provided. The first inner reinforcing plate 160 a is provided so that its ends are in contact with the inner side surfaces of the first surface 11 and the third surface 13 . The first inner reinforcing plate 160a is fixed, for example, by welding to the inner side surfaces of the first surface 11 and the third surface 13 of the first steel pipe column. In this way, by providing the first inner reinforcing plate 160a so as to span the opposing inner side surfaces at the position where the through hole of the first steel pipe column 102 is provided, the strength of that portion can be increased. . That is, in the first steel pipe column 102, the strength of the portion where the first through-hole 120a and the third through-hole 120c are provided can be supplemented.

The first inner reinforcing plate 160a may have recesses 162a formed at positions overlapping the first through holes 120a and the third through holes 120c. Although the shape of the concave portion 162a is arbitrary, it may have, for example, a semicircular shape having substantially the same diameter as the first through-hole 120a and the third through-hole 120c. By providing the recessed portion 162a in the first inner reinforcing plate 160a, it is possible to partially block the first through hole 120a and the third through hole 120c. As a result, even when a tool or the like is inserted through the first through-hole 120a and the second through-hole 120b for work, the first inner reinforcing plate 160a does not become a hindrance and workability is not lowered. be able to. The second inner reinforcing plate 160b provided on the second steel pipe column 112 has the same configuration as the first inner reinforcing plate 160a provided on the first steel pipe column 102.

FIG. 11(A) shows a cross-sectional structure of the parts sandwiched by arrows E1 and E2 in FIG. 10, and FIG. 11(B) shows a cross-sectional view of the parts sandwiched by arrows F1 and F2 in FIG. shows the cross-sectional structure of

As shown in FIG. 11(A), the second steel pipe column 112 is provided with a second inner reinforcing plate 160b so as to bridge the inner side surface of the second surface 22 to the fourth surface 24 . The second inner reinforcing plate 160b is provided at a position overlapping the second through hole 120b and the fourth through hole 120d. A concave portion 162b is provided at the end of the second inner reinforcing plate 160b so as not to partially block the through hole. As shown in FIG. 11B, the first steel pipe column 102 is provided with a first inner reinforcing plate 160a so as to span the inner side surfaces of the first surface 11 and the third surface 13 . The first inner reinforcing plate 160a is provided with recesses 162a at the ends facing the first through holes 120a and the third through holes 120c.

As shown in FIGS. 11A and 11B, in the steel pipe column, the first inner reinforcing plate 160a and the second inner reinforcing plate 160a are in contact with both inner side surfaces of the opposing surfaces on which the through holes are provided. By providing 160b, it is possible to compensate for a decrease in strength (rigidity) due to the provision of the through hole. Other configurations of the steel pipe column according to this embodiment are the same as those according to the first embodiment, and the same effects can be achieved. It should be noted that this embodiment can be implemented by appropriately incorporating the configurations of the second and third embodiments.

Reference numerals 100: bolted joints, 100a: first bolted joints, 100b: second bolted joints, 100c: third bolted joints, 100d: fourth bolted joints Part 102... First steel pipe column 104a ... First protrusion (of first steel pipe column) 104b... Second protrusion (of first steel pipe column) 106a ... First cutout portion (of first steel pipe column) 106b ... Second cutout portion (of first steel pipe column) 108a ... (of first steel pipe column) First bolt hole 108b... Second bolt hole (of first steel pipe column) 108c... Third bolt hole (of first steel pipe column) 112... Second steel pipe Column 114a... First projection (of the second steel pipe column) 114b ... Second protrusion (of the second steel pipe column) 114c ... (Second steel pipe column) ) third protrusion 114 d ... fourth protrusion (of the second steel pipe column) 116a... first notch (of the second steel pipe column) 116 b ... - Second notch (of the second steel pipe column) , 118a ... First bolt hole (of the second steel pipe column), 118b... Second (of the second steel pipe column) Bolt hole 118c Third bolt hole (of the second steel pipe column) 120 Through hole 120a First through hole 120b Second through hole 120c Third through hole 120d Fourth through hole 122a First reinforcing plate 122b Second reinforcing plate 122c Third reinforcing plate 122d Fourth reinforcing plate 124a First opening 124b Second opening 124c Third opening 124d Fourth opening Reference numerals 130a : First splint plate 130b: Second splint plate 130c: Third splint plate 132a: Bolt hole of the first splint plate 132b: Third splint plate 2 bolt holes 140a ... splint plate facing the first splint plate 140b... splint plate facing the second splint plate 140c... facing the third splint plate attached plate 142a ... bolt hole in the attached plate facing the first attached plate 142b... bolt hole in the attached plate facing the second attached plate 150... bolt 152... Nut 160a First inner reinforcing plate 160b Second inner reinforcing plate 162a Concave portion 162b Concave portion

Claims (12)

a first steel pipe column having a first through hole in its side surface;
a second steel pipe column having a second through hole in the side surface;
a first splint and a second splint;
a first reinforcing plate having a first opening and a second reinforcing plate having a second opening;
including
The first reinforcing plate is provided in contact with the first steel pipe column so that the first through hole and the first opening overlap,
The second reinforcing plate is provided in contact with the second steel pipe column so that the second through hole and the second opening overlap,
The first steel pipe column and the second steel pipe column are arranged in the vertical direction,
The first splint plate is adjacent to the first reinforcing plate and includes a boundary between the first steel pipe column and the second steel pipe column, between the first steel pipe column and the second steel pipe column. provided in contact with the sides,
The second splint plate is adjacent to the second reinforcing plate and includes a boundary between the first steel pipe column and the second steel pipe column, between the first steel pipe column and the second steel pipe column. provided in contact with the sides,
The first steel pipe column and the second steel pipe column are bolted together using the first splint plate and the second splint plate. a second bolted joint ;
the first bolted joint and the second bolted joint are arranged obliquely ;
The first through hole is adjacent to the first bolted joint and the second through hole is adjacent to the second bolted joint.
Joint structure of steel pipe column. The first steel pipe column has a plurality of first bolt holes in a region overlapping with the first splint plate, and a plurality of second bolt holes in a region overlapping with the second splint plate,
The second steel pipe column has a plurality of first bolt holes in a region overlapping with the first splint plate, and a plurality of second bolt holes in a region overlapping with the second splint plate,
The position of the end of one side of the first reinforcing plate that intersects the material axial direction of the first steel pipe column is the first steel pipe among the plurality of second bolt holes of the first steel pipe column. at a position substantially equal to or exceeding the position of the end of the outermost second bolt hole arranged in the material axial direction of the pillar,
The position of the end of one side of the second reinforcing plate that intersects the material axial direction of the second steel pipe column is the second bolt hole among the plurality of first bolt holes of the second steel pipe column. 2. The joint structure of a steel pipe column according to claim 1 , wherein the joint structure of the steel pipe column is at a position substantially equal to or exceeding the position of the end portion of the outermost first bolt hole arranged in the material axial direction of the steel pipe column. 3. The steel pipe according to claim 1 or 2, wherein the first reinforcing plate is spaced apart from the first splint plate, and the second reinforcing plate is spaced apart from the second splint plate. Column joint structure. 4. The first reinforcing plate is welded to the outer side surface of the first steel pipe column, and the second reinforcing plate is welded to the outer side surface of the second steel pipe column. 1. The joint structure of the steel pipe column according to 1. 4. The first reinforcing plate is welded to the inner side surface of the first steel pipe column, and the second reinforcing plate is welded to the outer side surface of the second steel pipe column. 1. The joint structure of the steel pipe column according to 1. a splint plate facing the first splint plate and a splint plate facing the second splint plate ;
The first splint plate and the second splint plate are arranged on the outer side surfaces of the first steel pipe column and the second steel pipe column,
A splint plate facing the first splint plate and a splint plate facing the second splint plate are arranged on inner side surfaces of the first steel pipe column and the second steel pipe column.
The joint structure of the steel pipe column according to claim 4 or 5. 7. The steel pipe column joint according to any one of claims 1 to 6, wherein one or both of the first steel pipe column and the second steel pipe column have an inner reinforcing plate spanning a pair of opposing inner surfaces. structure. The inner reinforcing plate is arranged at a position overlapping with the first through hole in the first steel pipe column, and arranged at a position overlapping with the second through hole in the second steel pipe column. Item 8. The steel pipe column joint structure according to Item 7. The inner reinforcing plate has a recess at a position overlapping the first through hole in the first steel pipe column, and a recess at a position overlapping the second through hole in the second steel pipe column. The joint structure of the steel pipe column according to claim 8. 10. The first through-hole and the second through-hole are different in height in the material axial direction of the first steel pipe column and the second steel pipe column, according to any one of claims 1 to 9 The joint structure of the steel pipe column described in the paragraph. Having a notch at one end of the first steel pipe column and a projection projecting from the end recessed by the notch of the first steel pipe column ,
Having a notch at one end of the second steel pipe column and a protrusion projecting from the end recessed by the notch of the second steel pipe column ,
The notch portion of the first steel pipe column and the projection portion of the second steel pipe column , and the projection portion of the first steel pipe column and the notch portion of the second steel pipe column are engaged. The joint structure of the steel pipe column according to any one of claims 1 to 10 provided in the. The steel pipe column joint structure according to any one of claims 1 to 11, wherein the cross-sectional shape of the first steel pipe column and the second steel pipe column is rectangular.

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