Joint structure of square steel pipe column

Abstract

To provide a joint structure capable of preventing strength from being decreased while changing thicknesses of a column leg side and a column head side at rational positions of a steel pipe column.SOLUTION: A joint structure of a square steel pipe column includes: a first diaphragm which is provided on a first square steel pipe column; a pair of flanges in which flange faces are placed generally parallel to a material axis direction of the first square steel pipe column and are connected to the first diaphragm; a second diaphragm which is provided on a second square steel pipe column; a pair of flanges in which flange surfaces are placed generally parallel to a material axis direction of the second square steel pipe column and are connected to the second diaphragm; and a first and second splice plates, wherein a column diameter of the first square steel pipe column is larger than that of the second square steel pipe column, and the second square steel pipe column is placed on the first square steel pipe column such that the flange surfaces of the pair of flanges connected to the first diaphragm becomes flush to the flange surface of the pair of flanges connected to the second diaphragm, and a first corner part of the first square steel pipe column corresponds to a first corner part of the second square steel pipe column in a material axis direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] An embodiment of the present invention relates to a joint structure of a steel pipe column used in a building. [Background technology]

[0002] At construction sites, welding and bolting are used to join steel members. Although welding joints can in principle ensure sufficient strength, they require advanced techniques. It requires time and effort, and the strength of the joint is affected by the skill of the worker. Bolted joints can shorten the construction period, are less affected by the skill of the workers, and are easy to control the quality. There are various bolt connection methods, for example, a steel pipe column and an H Methods for joining steel columns and steel pipe columns have been disclosed (see Patent Documents 1 and 2). see). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP-A-5-179702 (Patent No. 3146209) [Patent Document 2] JP 2004-293196 A (Patent No. 4038449) Summary of the Invention [Problem to be solved by the invention]

[0004] When connecting steel frame members with bolts, the members have an open cross-sectional shape such as H-shaped steel. However, if a tubular member such as a square steel pipe column is used, it is easy to use a bolt joint. When connecting with bolt joints, there is a problem that construction is not easy because the cross section has a closed shape. It is also possible to process a part of the steel pipe pole to make bolt connection construction easier. However, there is a concern that this may reduce the strength of the joint.

[0005] If you want to change the thickness of the steel pipe column between the base and the head, you can switch it at the same height as the beam. However, in such a structure, the column capitals are thicker than necessary, and they can be damaged by earthquakes and other events. When a force is applied in the opposite direction, the bending stress generated at the column head and the column base may be different. The thickness required for the stigma side is often made constant up to the stigma side, resulting in a stigma that is thicker than necessary. This results in an irrational situation.

[0006] Therefore, the present invention aims to change the thickness of the column base and column head at a reasonable point on the steel pipe column while maintaining the strength. One of the objectives is to provide a joint structure that does not reduce the [Means for solving the problem]

[0007] The joint structure of a steel pipe pole according to one embodiment of the present invention includes a first steel pipe pole provided at one end thereof. The flange surface of the diaphragm is arranged approximately parallel to the material axis direction of the first steel pipe column, and the first diaphragm The first flange and the second flange connected to the diaphragm and the second steel pipe pole are attached to one end of the The flange surface is arranged approximately parallel to the material axis direction of the second steel pipe column. a third flange and a fourth flange joined to the second diaphragm, and a first flange The first diaphragm and the second diaphragm are opposed to each other. In this way, the second steel pipe pole is placed on top of the first steel pipe pole, and the first steel pipe pole is placed closer to the second steel pipe pole. The flange surfaces of the first flange and the third flange are oriented in a first direction. The flange surfaces of the second flange and the fourth flange are aligned in a second direction intersecting the first direction. one side of the first flange and one side of the second flange are adjacent to each other and spaced apart from each other. One side of the third flange and one side of the fourth flange are adjacent to each other and spaced apart from each other. The flange surface of the first flange and the flange surface of the third flange are arranged flush with each other. , the first flange is bolted through the first splice plate, and the flange surface of the second flange and the fourth flange The flange surfaces of the first and second plates are arranged flush with each other and are bolted together via a second splice plate.

[0008] The joint structure of a steel pipe pole according to one embodiment of the present invention includes a first steel pipe pole provided at one end thereof. The flange surface of the diaphragm is arranged approximately parallel to the material axis direction of the first steel pipe column, and the first diaphragm a first flange having a bolt hole and a first through hole joined to the diaphragm; a second flange having no through hole, and a second die provided at one end of the second steel pipe column; The flange surface is arranged approximately parallel to the material axis direction of the second steel pipe column, and the second diaphragm a third flange having a bolt hole and a second through hole joined to the ram; The fourth flange has no through-hole, a first splice plate, and a second splice plate. A second steel pipe is placed on top of the first steel pipe column so that the diaphragm faces the second diaphragm. The columns are arranged, the first steel pipe column is thicker than the second steel pipe column, and the first flange and the third flange The flange surfaces of the respective flanges are oriented in a first direction, and the second flange and the fourth flange are The flange surface of the first flange is oriented in a second direction intersecting the first direction, and the first flange and the second flange are The first flange and the second flange are adjacent to each other, the third flange and the fourth flange are adjacent to each other, and the first flange The flange surface of the first flange and the flange surface of the fourth flange are arranged flush with each other, and the first flange is connected to the flange surface of the fourth flange via the first splice plate. The flange surface of the second flange is flush with the flange surface of the third flange. The two plates are placed together and bolted together via a second splice plate.

[0009] The joint structure of a steel pipe pole according to one embodiment of the present invention includes a first steel pipe pole provided at one end thereof. The flange surface is arranged parallel to the material axis direction of the first steel pipe column, and the first die The first L-shaped flange and the second L-shaped flange connected to the afram and one of the second steel pipe columns The second diaphragm is attached to the end of the second steel pipe column, and the flange surface is arranged parallel to the material axis direction of the second steel pipe column. a third L-shaped flange and a fourth L-shaped flange positioned on the second diaphragm and joined to the second diaphragm; , a first splice plate, and a second splice plate. The second steel pipe pole is placed on the first steel pipe pole so that the first and second steel pipe poles face each other. The first L-shaped flange and the second L-shaped flange are spaced apart from each other. The third L-shaped flange and the fourth L-shaped flange are spaced apart from each other, and the first L-shaped flange and the fourth L-shaped flange are spaced apart from each other. The L-shaped flanges of the third flange are arranged so that their flange surfaces are flush with each other and are connected to the second L-shaped flange. The fourth L-shaped flange is a flange with its flange surfaces flush with the first L-shaped flange. and the third L-shaped flange are bolted together via the first splice plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together via a second splice plate.

[0010] The joint structure of a steel pipe pole according to one embodiment of the present invention includes a first steel pipe pole provided at one end thereof. The flange surface is arranged parallel to the material axis direction of the first steel pipe column, and the first die A first grooved flange and a second grooved flange, both ends of which are bent in the same direction, are joined to the aphram. a channel flange, a second diaphragm provided at one end of the second steel pipe column, and a second steel pipe column The flange surface is arranged parallel to the material axis direction of the diaphragm, and is joined to the second diaphragm. a third groove flange and a fourth groove flange bent in a groove shape in the direction of the first flange and a first flange; and a second support plate. The first diaphragm and the second diaphragm are disposed so as to face each other. A second steel pipe column is placed on top of the first steel pipe column, and the first steel pipe column is thicker than the second steel pipe column. The first grooved flange and the second grooved flange are arranged such that the bent ends are spaced apart and face each other. The third groove flange and the fourth groove flange are arranged such that the bent ends are spaced apart and face each other. The first groove flange and the second groove flange face each other, and the third groove flange and the fourth groove flange are different, and the first groove flange and the third groove flange are different. The flange surfaces are arranged flush with each other, and the second groove flange and the fourth groove flange are arranged flush with each other. The flange surfaces of the first groove flange and the third groove flange are arranged flush with each other, and The second groove flange and the fourth groove flange are bolted together via the first splice plate. It is bolted via a second splice plate.

[0011] In one embodiment of the present invention, the first diaphragm is thicker than the second diaphragm. is preferred. [Effects of the Invention]

[0012] According to one embodiment of the present invention, steel pipe columns of different diameters can be connected midway between floors. This allows the base of the column to be thick and strong, while the head of the column is thin, making it lighter, less material-consuming, and more space-saving. This allows for a structure that is suitable for column capitals with small bending moments. [Brief explanation of the drawings]

[0013] [Figure 1] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 2] 2 shows the cross-sectional structure of the bolted joint in the steel pipe column joint structure shown in FIG. 1, where (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. [Figure 3] 1A and 1B show schematic plan views of a steel pipe pole according to one embodiment of the present invention, in which (A) and (B) show the structure of a second steel pipe pole as viewed from the column head side. [Figure 4] 1 shows an outline of a column-beam structure of the first floor of a building having a steel pipe column joint structure according to one embodiment of the present invention. [Figure 5] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 6] 6 shows the cross-sectional structure of the bolted joint in the steel pipe column joint structure shown in FIG. 5, where (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. [Figure 7] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 8] 8 shows the cross-sectional structure of the bolted joint in the steel pipe column joint structure shown in FIG. 7, where (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. [Figure 9] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 10] FIG. 1 shows a front view of a bolted joint in a steel pipe column joint structure according to one embodiment of the present invention. [Figure 11]11A and 11B show cross-sectional structures of a bolted joint in the steel pipe pole joint structure shown in FIG. 10, where (A) shows the cross-sectional structure on the first steel pipe pole side, and (B) shows the cross-sectional structure on the second steel pipe pole side. [Figure 12] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 13] FIG. 1 shows a front view of a bolted joint in a steel pipe column joint structure according to one embodiment of the present invention. [Figure 14] 14 shows the cross-sectional structure of the bolted joint in the steel pipe pole joint structure shown in FIG. 13, where (A) shows the cross-sectional structure on the first steel pipe pole side, and (B) shows the cross-sectional structure on the second steel pipe pole side. [Figure 15] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 16] 16A and 16B show cross-sectional structures of a bolted joint in the steel pipe pole joint structure shown in FIG. 15, where (A) shows the cross-sectional structure on the first steel pipe pole side, and (B) shows the cross-sectional structure on the second steel pipe pole side. [Figure 17] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 18] FIG. 1 shows a front view of a bolted joint in a steel pipe column joint structure according to one embodiment of the present invention. [Figure 19] 19 shows the cross-sectional structure of the bolted joint in the steel pipe pole joint structure shown in FIG. 18, where (A) shows the cross-sectional structure on the first steel pipe pole side, and (B) shows the cross-sectional structure on the second steel pipe pole side. [Figure 20] FIG. 1 shows a development view of a joint structure of a steel pipe column according to one embodiment of the present invention. [Figure 21] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 22]22A and 22B show cross-sectional structures of a bolted joint in the steel pipe pole joint structure shown in FIG. 21, where (A) shows the cross-sectional structure on the first steel pipe pole side, and (B) shows the cross-sectional structure on the second steel pipe pole side. [Figure 23] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 24] FIG. 1 shows a front view of a bolted joint in a steel pipe column joint structure according to one embodiment of the present invention. [Figure 25] 25A and 25B show cross-sectional structures of a bolted joint in the steel pipe pole joint structure shown in FIG. 24, where (A) shows the cross-sectional structure on the first steel pipe pole side, and (B) shows the cross-sectional structure on the second steel pipe pole side. [Figure 26] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 27] 1A and 1B show a joint structure of a steel pipe pole according to one embodiment of the present invention, in which FIG. 1A is a perspective view of a portion of an L-shaped flange, and FIG. 1B is a plan view of the portion of the L-shaped flange. [Figure 28] 1A and 1B are perspective views of a joint structure of a steel pipe pole according to one embodiment of the present invention, in which (A) shows a developed view and (B) shows a bolted joint portion in the joint structure of two steel pipe poles. [Figure 29] 29 shows the cross-sectional structure of the bolted joint in the steel pipe pole joint structure shown in FIG. 28, where (A) shows the cross-sectional structure on the first steel pipe pole side, and (B) shows the cross-sectional structure on the second steel pipe pole side. [Figure 30] 1 shows a cross-sectional structure of a bolted joint in a steel pipe column joint structure according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, the contents of the embodiment of the present invention will be described with reference to the drawings. The present invention includes many different aspects and should not be construed as being limited to the contents of the following exemplary embodiments. In order to clarify the explanation, the drawings are not intended to be limiting in width, thickness, shape, etc. of each part compared to the actual embodiment. Although the present invention may be illustrated in a schematic manner, it is merely an example and does not limit the scope of the present invention. Furthermore, in this specification, the same elements as those shown in one drawing may be used interchangeably with those shown in another drawing. When an element shown in the drawings has the same or corresponding relationship, the same reference numeral (or symbols) are used. The repeated explanations are given by adding a symbol (a, b, etc.) after the number written as a symbol. Furthermore, the letters "first" and "second" attached to each element may be omitted. A convenient mark used to distinguish elements and, unless otherwise specified, It has no meaning.

[0015] In the following description, a case where the steel pipe column is a square steel pipe column is taken as an example, but the present invention is not limited to this. It can be applied appropriately to round steel pipe columns, deformed steel pipe columns, etc.

[0016] [First embodiment] A joint structure of a steel pipe pole according to one embodiment of the present invention will be described with reference to Figs. 1(A) and 1(B). Figure 1(A) shows the development of the joint of a steel pipe column, and Figure 1(B) shows the joint of a square steel pipe column. 1(A) shows a perspective view of the joint. Note that fasteners such as bolts and nuts are omitted in FIG. are.

[0017] 1(A) and 1(B) show a first steel pipe pole 102, a second steel pipe pole 112 and their joints. As shown in Fig. 1(A) and Fig. 1(B), the first steel pipe column 102 has four For convenience, the surfaces are designated clockwise as a first surface 11, a second surface 12, a third surface 13, and a fourth surface 14. The second steel pipe column 112 is also shown with the reference numerals 14 and 15. Similarly, the first surface 21, the second surface 22, and the third surface 23 are shown with the reference numerals 14 and 15. The second surface 22, the third surface 23, and the fourth surface 24 are designated by reference numerals. When the steel pipe poles are erected, the first steel pipe pole 102 is disposed on the lower side in the material axis direction. , the second steel pipe column 112 is to be placed on the upper side.

[0018] In this embodiment, the first steel pipe pole 102 and the second steel pipe pole 112 have a pole diameter (thickness of the pole) ) are different. The first steel pipe column 102 is arranged on the lower side, while the second steel pipe column 102 is arranged on the upper side. The steel pipe pole 112 has a small diameter. The joint structure of the steel pipe pole according to this embodiment is as follows: The structure consists of steel pipe columns of different diameters (thicknesses) joined together.

[0019] As shown in FIG. 1(A), a first diaphragm 104 is provided on a first steel pipe column 102. A second diaphragm 114 is provided on the second steel pipe column 112. 04 is attached by welding to close one end of the first steel pipe column 102, and the second diaphragm The ram 114 is attached by welding to close one end of the second steel pipe pole 112. The diaphragm 104 and the second diaphragm 114 are flat plate-shaped members, For example, the first diaphragm 104 and the second diaphragm 114 may have any shape. The shape of the electrode in plan view is square as shown in FIG. The first diaphragm 104 and the second diaphragm 114 may be circular in plan view. good.

[0020] Since the first steel pipe column 102 and the second steel pipe column 112 have different column diameters (thicknesses), Therefore, the areas of the first diaphragm 104 and the second diaphragm 114 in a plan view are different. In other words, the diaphragm may have a size that can close the end face of the steel pipe pole. In a plan view, the second diaphragm 114 is On the other hand, the first diaphragm 104 disposed on the lower side has a rigidity In order to increase the strength, it is preferable that the second diaphragm 114 has a large thickness.

[0021] On the upper surface of the first diaphragm 104, first flanges 106a, 106b and a second flange 106b are provided. The flanges 108a and 108b are provided. The first flanges 106a and 106b and The flanges 108a and 108b are plate-shaped members, and have a plurality of bolt holes 12 on the flange surface. 2. First flanges 106a, 106b and second flange 108a , 108b are arranged such that their flange surfaces are parallel to the material axis direction of the first steel pipe column 102. The first flanges 106a, 106b and the second flanges 108a, 108b are The diaphragm 104 is provided on the surface of the diaphragm 104 and joined by welding.

[0022] The first flange 106a is disposed on the first surface 11 side, and the first flange 106b is disposed on the third surface 12 side. The first flange 106a and the first flange 106b are disposed on the first diaphragm 13 side. The inner flange surfaces are arranged on the diaphragm 104 so as to face each other and spaced apart. The second flange 108a is disposed on the second surface 12 side, and the second flange 108b is disposed on the fourth surface 1 4 side, and are spaced apart so that the inner flange surfaces face each other on the first diaphragm 104. In this way, the first flanges 106a, 106b and the second flange 106a are arranged in a 108a, 108b are arranged to correspond to the four faces of the first steel pipe column 102.

[0023] As shown in Figure 1(A), adjacent flanges are spaced apart so as not to come into contact with each other. In other words, the first flange 106a and the second flange 108a are arranged such that the adjacent sides of the first flange 106a and the second flange 108a are are arranged at intervals, and the intervals are provided at positions corresponding to the corners of the first steel pipe column 102. Since the adjacent flanges have such a positional relationship, the first diaphragm On the frame 104, there are provided areas spaced apart corresponding to the corners of the first steel pipe column 102. .

[0024] Although not shown in detail in this embodiment, the first diaphragm 104 has a flange 106a. The number of flanges can be selected appropriately. For example, three flanges can be used to form three surfaces. Alternatively, six flanges may be arranged to form six faces. Even in the event of misalignment, adjacent flanges are positioned so that they do not come into contact with each other. It is sufficient that the light source 10 is arranged so that no unshielded portion is formed.

[0025] The second diaphragm 114 is provided with third flanges 116a, 116b and a fourth flange. The third flange 116a, 116b and the fourth flange 116b are provided. The flanges 118a and 118b are plate-shaped members, and a plurality of bolt holes 122 are provided on the flange surface. The third flanges 116a, 116b and the fourth flanges 118a, 118b are 8b are arranged such that their flange surfaces are parallel to the material axis direction of the second steel pipe column 112. The third flange 116a, 116b and the fourth flange 118a, 118b are It is erected on the surface of the diaphragm 114 and joined by welding.

[0026] As shown in FIG. 1(A), the first flange 106a and the third flange 116a are The flange surfaces are arranged facing the same direction (first direction). The flange surfaces of the first flange 108a and the fourth flange 118a are in the same direction (the second direction). The second direction is a direction that intersects with the first direction. For example, The second direction is rotated 90 degrees relative to the first direction.

[0027] The first flange 106a and the third flange 116a, and the second flange 108a and the third flange 116b are The first flange 118a and the fourth flange 118b are arranged so that their flange surfaces are flush with each other. 106b and third flange 116b, and second flange 108b and fourth flange The third flange 118b is also arranged in the same manner. 6a, 116b, and the outer flange surfaces of the fourth flanges 118a, 118b are connected to the second flanges 116a, 116b. When positioned so as to be substantially coincident with the outer surface of the steel pipe column 112, the first flanges 106a, 106b The first flange 108a and the second flange 108b are disposed inside the outer surface of the first steel pipe column 102. That is, the first steel pipe pole 102 is thicker than the second steel pipe pole 112. When the flange surfaces of the upper and lower flanges are arranged flush with each other, the first flanges 106a and 10 6b and the second flanges 108a and 108b are disposed within the plane of the first diaphragm 104. Therefore, it will be positioned more inward.

[0028] In this way, by providing a diaphragm at the end of the steel pipe column, steel pipe columns of different diameters can be joined. In addition, the flange arrangement can be freely adjusted even when the steel pipe is used. The material and thickness of the flange can be changed for the column. For example, the thickness of the flange can be changed for the steel pipe column. The thickness of the steel plate can be increased, and the strength of the bolt joint can be increased. When the pipe column is made of steel, the flange material is chromium (Cr), molybdenum (Mo ), materials with a high content of nickel (Ni) can be used, and in bolt joints This allows for both high tensile strength and high toughness. By joining a flange to this position, buckling of the flange can be suppressed. This allows stress to be distributed across the flanges, preventing stress from concentrating on a specific flange. become.

[0029] FIG. 1B shows a configuration in which the first diaphragm 104 and the second diaphragm 114 face each other. This shows a state in which a second steel pipe pole 112 is placed on top of a first steel pipe pole 102 and joined together. The first flange 106a and the third flange 116a have a first flange on the outer flange surface. The plate 130a is abutted against the inner flange surface, and the third splice plate 140a is abutted against the inner flange surface. The bolts and nuts are inserted into the bolt holes 122 of the first bolt joint 10. Similarly, the second flange 108a and the fourth flange 118a are formed on the outer side. The second splice plate 132a is in contact with the flange surface of the first flange, and the fourth splice plate 14 is in contact with the flange surface of the second flange. 2a are brought into contact with each other to form a second bolt joint 100b. As shown in FIG. 1(B), the first steel pipe column 102 and the second steel pipe column 1 When the first and second electrodes 12 are joined together, a first opening 120a is formed. The first steel pipe pole 102 and the second steel pipe pole 112 are formed in correspondence with the corners of the first steel pipe pole 102 and the second steel pipe pole 112. The opening 120a is between the first bolted joint 100a and the second bolted joint 100b. is formed.

[0030] In FIG. 1(B), the structure when the portion indicated by the arrows A1 and A2 is viewed in cross section is shown in FIG. 2(A). 2(A) shows the cross-sectional structure of the joint on the first steel pipe column 102 side, FIG. 2(B) shows the cross-sectional structure of the joint on the second steel pipe column 112 side.

[0031] As shown in FIG. 2(A), the first diaphragm 104 is provided with a first steel pipe column 102. A first flange 106a corresponds to the surface 11, and a second flange 108 corresponds to the second surface 12. a, a first flange 106b corresponding to the third surface 13, a second flange 106c corresponding to the fourth surface 14, As shown in FIG. 2(B), the second diaphragm 114 is provided with a The third flange 116a corresponds to the first surface 21 of the second steel pipe column 112, and the second surface 22 corresponds to the The fourth flange 118a corresponds to the third surface 23, the third flange 116b corresponds to the third surface 23, and the fourth flange 116c corresponds to the fourth surface 24. A fourth flange 118b is provided corresponding to the surface 24.

[0032] In this embodiment, the diameter of the second steel pipe pole 112 is smaller than the diameter of the first steel pipe pole 102. Because of their thinness, the first flanges 106a, 106b and the second flanges 108a, 108b The arrangement of the third flanges 116a, 116b and the fourth flanges 118a, 118b That is, the third flanges 116a, 116b and the fourth flanges 116a, 116b are constrained by the arrangement of the The flanges 118a, 118b are disposed along the side edges of the second diaphragm 114. On the other hand, the first flanges 106a, 106b and the second flanges 108a, 108b is disposed in an area inward from the end of the first diaphragm 104.

[0033] The first bolt joint 100a is made up of a first flange 106a and a third flange 106b arranged vertically. The flange 116a is bolted to the first splice plate 130a and the third splice plate 140a. The second bolt joint 100b is a portion where the second flange 1 is arranged above and below the second flange 1. The second flange 132a and the fourth flange 118a are connected to the second splice plate 132a and the fourth splice plate 142a. The third bolt joint 100c is a portion where the bolts are joined together through the bolt joint. The first flange 106b and the third flange 116b are connected to the first splice plate 130b and the third splice plate 130c. The fourth bolt joint portion 100d is a portion that is bolted via a splice plate 140b. The second flange 108b and the fourth flange 118b arranged above and below form the second splice plate 1 32b and the fourth splice plate 142b.

[0034] As shown in Figures 2(A) and 2(B), the joint structure of a steel pipe pole according to this embodiment is as follows: A first opening 12 is formed between the first bolt joint 100a and the second bolt joint 100b. 0a, and a second bolt joint 100b is provided between the second bolt joint 100b and the third bolt joint 100c. and a third bolt joint 100c and a fourth bolt joint 100d. A third opening 120c is provided between the fourth bolt joint 100d and the first bolt joint 100e. Between the flanges 100a and 100b there is a fourth opening 120d. They are formed by being spaced apart and provided to correspond to each corner of the steel pipe column.

[0035] As shown in FIG. 1(B) and FIGS. 2(A) and 2(B), the first steel pipe column 102 and the second steel pipe column 103 are When the first and second steel pipe columns 112 are arranged vertically in the material axis direction and joined together, the first opening 120a and the second opening 120b are formed. A second opening 120b, a third opening 120c, and a fourth opening 120d are formed. These openings connect the space outside the square steel pipe column with the space inside surrounded by the flange. With this configuration, the worker can easily check the connection between the first steel pipe pole 102 and the second steel pipe pole 103. At the work site where the pillar 112 is joined, the opening portion is used as a hand hole. This allows tools to be applied from the inside of the flange, making bolt joining easier. It can be installed in the following areas.

[0036] First flanges 106a, 106b and second flanges 108a, 108b, and The widths of the third flanges 116a, 116b and the fourth flanges 118a, 118b are The opening to be formed should be set appropriately within a range that allows it to be used as a hand hole. In addition, these flanges can be made thicker than the wall thickness of the steel pipe pole, which In other words, the strength of the bolt joint can be increased by increasing the flange plate thickness. This makes it possible to form an opening while preventing a decrease in the strength of the bolt joint.

[0037] In addition, FIG. 2 shows that the first steel pipe pole 102 and the second steel pipe pole 112 are Although the embodiment shows an arrangement in which the central axes are aligned, the present invention is not limited to such an arrangement of steel pipe columns. For example, as shown in the schematic plan view of FIG. 3(A), one of the first steel pipe columns 102 It is also possible to arrange the second steel pipe column 112 so that the position of the corner coincides with the position of one corner of the second steel pipe column 112. As shown in the schematic plan view of FIG. 3(B), one side of the first steel pipe column 102 and the second It can also be arranged so that it coincides with one side of the steel pipe column 112. According to the embodiment, two steel pipe columns of different thicknesses are connected by bolt joints, and the column base side The thickness of the column can be changed at the capital side and the column center can be shifted.

[0038] The first steel pipe pole 102 and the second steel pipe pole 112 are made of a steel material. The ram 104, the second diaphragm 114, the first flanges 106a and 106b, the second flange flanges 108a, 108b, third flanges 116a, 116b, fourth flange 118 a, 118b, first splices 130a, 130b, second splices 132a, 132b, The third splice plates 140a, 140b and the fourth splice plates 142a, 142b are also made of steel. For example, structural rolled steel is used as the steel material. First splices 130a, 130b and second splices 132a, 132b are disposed on the outside. b, and third splices 140a, 140b and fourth splice 142a disposed on the inner side; However, if the strength of the bolt joint is sufficient, it may be abutted on the inside or outside. The support plate can be omitted.

[0039] According to this embodiment, the first steel pipe column 102 and the second steel pipe column 112 are connected by bolts. When joining, the frame is designed to form an opening that can be used as a hand hole. The flange arrangement makes it easy to work on the construction site and ensures high-quality bolts. A bond can be formed.

[0040] FIG. 4 shows an outline of the column and beam structure of the first floor of a building. A column 202 stands on a foundation beam 200. The base side of the column 202 is fixed to the foundation beam 200 with anchor bolts or the like, and the head side is 4 shows the structure in which the column 202 is the first steel pipe column 102 shown in this embodiment. The figure shows a structure in which a second steel pipe column 112 is joined with a bolt joint 100.

[0041] In general, the stress on the column varies greatly between the base and the head. For example, in the column on the first floor, In this case, the column base is connected to a highly rigid foundation beam, so the end of the material is fixed to a high degree, and the column is not easily damaged by earthquakes, etc. When the column is deformed, the stress on the base side is greater than that on the head side. The column base is fixed to a highly rigid foundation, so the column base is fixed to a higher degree than the column head. The height increases and the bending moment increases accordingly.

[0042] In the conventional column-beam structure, the columns are constructed up to the column head with the same thickness as the column base, and the upper floors The structure has a structure where the columns above the beam are replaced with thin columns. In this case, depending on the construction circumstances (such as fine adjustment of the position of the pillar), ), the columns are divided into the part below the middle of the first floor (zero section) and the part above that (1 section) and delivered to the construction site. The structure is transported to the construction site and assembled by welding the upper and lower pillars together (on-site joining). For welding, the positions of the upper and lower columns (steel pipes) must be the same, so the columns placed above and below The position of the steel pipes must also be the same. The thickness of the steel pipes used as columns is based on the base column side. Therefore, the design on the capital side is excessive.

[0043] In contrast, according to the joint structure of the steel pipe column according to this embodiment, as shown in FIG. It is possible to change the thickness of the columns in the middle of the first floor. By providing the section 100 to connect the first steel pipe column 102 and the second steel pipe column 112, The diameter of the first steel pipe column 102 is made thicker, and the diameter of the second steel pipe column 112 is made thinner. This allows for the creation of a structure suitable for column capitals with small bending moments. By providing the joint 100 below the center of the pillar, workability is improved. By providing the second steel pipe column 112 above the center, it is possible to make the thickness of the second steel pipe column 112 smaller. This allows for cost reduction and a reduction in the required floor space.

[0044] In this embodiment, four openings that can be used as hand holes are provided. However, the present invention is not limited to such an embodiment, and any embodiment that does not affect workability is also possible. (where openings of sufficient diameter are available) Such a change in the number of openings can be achieved by adjusting the arrangement of the flanges that are joined to the diaphragm. This can be done appropriately depending on the location.

[0045] [Second embodiment] In this embodiment, a reinforcing plate ("U") is further added to the joint structure of the steel pipe pole shown in the first embodiment. In the following description, the first embodiment is The following explanation will focus on the differences from the previous version.

[0046] FIG. 5(A) shows a development of the joint of a square steel pipe column according to this embodiment, and FIG. 5(B) shows the joint of a square steel pipe column. As shown in FIG. 5(A), a first steel pipe column 102 is connected to a second steel pipe column 103. A first reinforcing plate 160 is provided on the side of the second steel pipe column 112, and a second reinforcing plate 162 is provided on the side of the second steel pipe column 112. The first reinforcing plate 160 is made of the first flanges 106a and 106b and the second flange 106c. The second reinforcing plate 162 is disposed in the inner region surrounded by the third frame 108a and 108b. The inner area surrounded by the flanges 116a, 116b and the fourth flanges 118a, 118b. will be placed in.

[0047] The first reinforcing plate 160 is disposed perpendicularly to the first diaphragm 104. The flanges 106a, 106b and the inner flange surfaces of the second flanges 108a, 108b The second reinforcing plate 162 is disposed perpendicular to the second diaphragm 114. The third flanges 116a, 116b and the fourth flanges 118a, 118b are disposed The first reinforcing plate 160 and the second reinforcing plate 162 are provided in contact with the inner flange surface. That is, the height of the second reinforcing plate 162 disposed on the upper side may be different from the height of the second reinforcing plate 162 disposed on the lower side. The first reinforcing plate 160 disposed on the first reinforcing plate 160 may be thick.

[0048] First splices 130a, 130b and second splices 130c are attached to the outside of the flanges to form the bolted joints. The first and second splices 132a and 132b are disposed on the inner side, and the third and fourth splices 140a and 140b and The splices 142a and 142b are arranged on the inside or the outside as in the first embodiment. One of the outer reinforcing plates 160 and 162 may be omitted. The third support plates 140a, 140b and the third support plates 140c, 140d are in contact with the flanges at positions that do not overlap with the hole. The fourth support plates 142a and 142b are connected to the first reinforcing plate 160 and the second reinforcing plate 162. It has a structure divided into two parts, left and right, to prevent interference.

[0049] As shown in FIG. 5(B), the first steel pipe pole 102 and the second steel pipe pole 112 are joined together. In this embodiment, the first opening 120a is formed, and the first reinforcing plate 160 and the second reinforcing plate 162 are is hidden inside the bolt joint and is not exposed to the outside.

[0050] In FIG. 5(B), the structure when the portion indicated by the arrows A3 and A4 is viewed in cross section is shown in FIG. 6(A). 6(A) shows the cross-sectional structure of the joint on the first steel pipe column 102 side, FIG. 6(B) shows the cross-sectional structure of the joint on the second steel pipe column 112 side.

[0051] As in the first embodiment, a bolt joint 100 (first bolt joint 1 00a, second bolted joint 100b, third bolted joint 100c, fourth bolted joint The first reinforcing plate 160 has first flanges 106a, 106b. , the second flanges 108a and 108b are brought into contact with the substantially central portions of the inner flange surfaces thereof, and the second auxiliary The stiffener 162 is connected to the third flanges 116a and 116c and the fourth flanges 118a and 118b. The first reinforcing plate 160 and the second reinforcing plate 162 are provided so as to abut against the approximate center. Since the cross-shaped opening is formed in a plan view, the first opening 120a and the second opening 120b , the third opening 120c, and the fourth opening 120d can be arranged so as not to block them. Therefore, even if the first reinforcing plate 160 and the second reinforcing plate 162 are provided, these openings The opening can be used as a hand hole to perform bolt joining work at the construction site. do.

[0052] In this embodiment, the reinforcing plate has a cross shape in plan view, but the present invention is not limited to this. Alternatively, an I-shaped reinforcing plate may be used, i.e., it abuts only the two opposing flanges. A reinforcing plate may be provided.

[0053] In this way, by providing the first reinforcing plate 160 and the second reinforcing plate 162, the bolt joint For example, the mechanical strength of the bolt joint 100 can be increased. The joint structure of the steel pipe pole according to this embodiment can improve the resistance to the shear force generated by the first The structure is the same as that of the first embodiment except that a first reinforcing plate 160 and a second reinforcing plate 162 are provided. The structure is similar to that of the conventional method, and the same effects can be achieved.

[0054] In the joint structure of the steel pipe column shown in Figure 5(A) and Figure 5(B), the reinforcing plates placed above and below The joints may be bolted together. Fig. 7(A) shows the expansion of the joint of a square steel pipe column according to this embodiment. Fig. 7(A) shows an open view, and Fig. 7(B) shows a perspective view of the joint of a square steel pipe column. , a fifth support plate 144a, a third support plate 144b, and a fourth support plate 144c are provided in contact with the first reinforcing plate 160 and the second reinforcing plate 162. The sixth bolt joint 101a and the sixth bolt joint 101b shown in FIG. The bolt joint 101b is formed at a position visible from the first opening 120a.

[0055] In FIG. 7(B), the structure when the portions indicated by arrows A5 and A6 are viewed in cross section is shown in FIG. 8(A). and Fig. 8(B). Fig. 8(A) shows the cross-sectional structure of the joint on the first steel pipe column 102 side. FIG. 8(B) shows the cross-sectional structure of the joint on the second steel pipe column 112 side. ), the bolt joint 10 joining the first reinforcing plate 160 and the second reinforcing plate 162 1 (fifth bolt joint 101a, sixth bolt joint 101b, seventh bolt joint 1 The fifth bolt joint 101a is provided with a bolt hole 101c and an eighth bolt joint 101d. The first reinforcing plate 160 and the second reinforcing plate 162 are connected to the fifth splice plate 144a and the sixth splice plate 144b. Similarly, the sixth bolt joint 101b is sandwiched between the fifth splice plate 146a. 44b and the sixth splice plate 146b, and the seventh bolt joint 101c is formed using the fifth The eighth bolt joint 10 is formed using the sixth splice 144c and the sixth splice 146c. 1d is formed using a fifth splice plate 144d and a sixth splice plate 146d.

[0056] The fifth bolt joint 101a is sandwiched between the first opening 120a and the second opening 120d. At the construction site, bolt connection work should be carried out using both of these openings. Another bolt joint for bolting the first reinforcing plate 160 and the second reinforcing plate 162 together Similarly, the slats are sandwiched between two openings, so bolt connection work can be easily performed at the construction site. It can be done easily.

[0057] In this way, by joining the first reinforcing plate 160 and the second reinforcing plate 162 with bolts, The strength of the joint connecting the first steel pipe pole 102 and the second steel pipe pole 112 can be increased. The bolt joint 101 between the first reinforcing plate 160 and the second reinforcing plate 162 is surrounded by a flange. However, since it is surrounded by the opening 120, it is possible to This allows for easy bolt tightening work.

[0058] In this embodiment, as in the first embodiment, the thickness of the steel pipe column is changed in the middle of the first floor. That is, a bolt joint 100 is provided in the middle of the first floor, and the first steel By connecting the pipe column 102 and the second steel pipe column 112, the column diameter of the column base side (first steel pipe column 102) The diameter of the column head side (second steel pipe column 112) can be made thinner, and the bending moment It is possible to create a structure suitable for small stigmata.

[0059] [Third embodiment] A joint structure of a steel pipe pole according to one embodiment of the present invention will be described with reference to Figs. 9(A) and 9(B). Figure 9(A) shows the development of the joint of a steel pipe column, and Figure 9(B) shows the joint of a square steel pipe column. 9(A) shows a perspective view of the joint. Note that fasteners such as bolts and nuts are omitted in FIG. are.

[0060] As shown in FIG. 9(A), a first diaphragm 104 is provided at one end of a first steel pipe column 102. The second steel pipe column 112 is provided with a second diaphragm 114 at one end thereof. The diaphragm 104 and the second diaphragm 114 are respectively connected to the first steel pipe column 102 and 2 and is joined to the steel pipe column 112 by welding.

[0061] As in the first embodiment, in this embodiment, the column diameter (thickness) of the first steel pipe column 102 The diameter of the first steel pipe column 112 is larger than the diameter of the second steel pipe column 112. The thickness of the diaphragm 104 is greater than that of the second diaphragm 114. .

[0062] The first diaphragm 104 includes first flanges 106a and 106b, a second flange 106c, and a The first flanges 106a and 106b have substantially the same shape. The flange surfaces are arranged parallel to the material axis direction of the first steel pipe column 102 and are opposed to each other at a predetermined interval. The second flanges 108a and 108b are provided so that the flange surfaces are in contact with the first steel pipe. The first flanges 106a and 106b are arranged in a direction parallel to the material axis direction of the column 102. The two sensors are oriented in a direction intersecting the direction of the sensor, and are provided facing each other at a predetermined distance. ) is a first flange 106a is connected to the 11th surface of the first steel pipe column 102, 6b is on the 13th surface, the second flange 108a is on the 12th surface, and the second flange 108b is on the As shown, each flange is positioned on the adjacent edge. By arranging the flanges in this way, the first diaphragm 1 On the casing 104, first flanges 106a, 106b and second flanges 108a, 108b are provided. An area surrounded by b is formed.

[0063] The first flange 106a is flat and has a first through hole 122 in addition to a plurality of bolt holes 122. When the first flange 106a is viewed in the vertical direction, the first through-hole 124a is The first through-hole 124a is disposed on the side closer to the first diaphragm 104. That is, the first through-hole 124a is The first flange 106a has one side where it is in contact with the first diaphragm 104 and a plurality of bolt holes 1 The first flange 106b is disposed between the first flange 106a and the area where the first flange 106b is provided. It has the same configuration as 106a, and has a third through-hole 124c in addition to multiple bolt holes. The second flanges 108a and 108b are provided with only a plurality of bolt holes 122, and the first flanges 108a and 108b are provided with only a plurality of bolt holes 122. The second through-hole 124a does not have any through-holes corresponding to the first through-hole 124a and the third through-hole 124c.

[0064] The second diaphragm 114 has third flanges 116a and 116b, a fourth flange The third flanges 116a and 116b have substantially the same shape. The flange surfaces are arranged in a direction parallel to the material axis direction of the second steel pipe column 112, and are spaced apart at a predetermined interval. The fourth flanges 118a and 118b are provided so that the flange surfaces are opposite to each other. The third flanges 116a, 116b are arranged in a direction parallel to the material axis direction of the steel pipe column 112. are oriented in a direction intersecting the opposing direction and are provided facing each other at a predetermined interval. 9(A) shows that the third flange 116a is connected to the 22nd surface of the second steel pipe column 112. The fourth flange 116b is on the 24th surface, the fourth flange 118a is on the 21st surface, and the fourth flange 118 As shown in the figure, each flange is located adjacent to the 23rd surface. The flanges are arranged so that the ends of the second diaphragm abut each other. On the ram 114 are a third flange 116a, a third flange 116b, a fourth flange An area surrounded by a first flange 118a and a fourth flange 118b is formed.

[0065] The third flange 116a is flat and has a second through hole 124b and a plurality of bolt holes 124b. When the third flange 116a is viewed in the vertical direction, the second through-hole 124b is The second through-hole 124b is disposed on the side closer to the second diaphragm 114. The flange 116a of the third diaphragm 113 is in contact with the second diaphragm 114, and the bolt holes 12 are The third flange 116b is disposed between the area where the third flange 116a is provided. 16a, and has a fourth through hole 124d (not shown) in addition to a plurality of bolt holes. On the other hand, the fourth flanges 118a and 118b are provided with only a plurality of bolt holes 122. The through holes corresponding to the second through hole 124b and the fourth through hole 124d are not provided. do not have.

[0066] The first through-hole 124a, the second through-hole 124b, the third through-hole 124c, and the There is no limitation on the size of the fourth through-hole 124d. Therefore, the hole diameter is large enough for workers to insert tools and perform bolt joint construction. The shape of these through holes is not limited, and may be a circular shape as shown in FIG. It may be an ellipse, a rectangle, or any polygon. The plurality of bolt holes 122 provided in the flange have a diameter large enough to allow bolts, which are fasteners, to be inserted therethrough. and are arranged appropriately.

[0067] The first splices 130a and 130b are connected to the first flanges 106a and 106b and the fourth flanges 106a and 106b. The second splices 132a and 132b are disposed on the outer sides of the flanges 118a and 118b. The second flange 108a, 108b and the third flange 116a, 116b are disposed on the outside of the The third splices 140a and 140b are connected to the first flanges 106a and 106b, and The fourth flanges 118a and 118b are disposed on the inner side of the fourth flanges 118a and 118b, and the fourth splices 142a and 142b are disposed on the inner side of the fourth flanges 118a and 118b. are located inside the second flanges 108a, 108b and the third flanges 116a, 116b. Each splice plate has a bolt hole 122.

[0068] As shown in FIG. 9(A), the first flange 106a and the third flange 116a are The flange surfaces are arranged facing the same direction (first direction). The flange surfaces of the first flange 108a and the fourth flange 118a are in the same direction (the second direction). The second direction is a direction that intersects with the first direction. For example, The second direction is rotated 90 degrees relative to the first direction.

[0069] The flange surface of the first flange 106a and the flange surface of the fourth flange 118a are The flange surfaces of the second flange 108a and the third flange 116a are flush with each other. the first flange 106b and the fourth flange 118b, the second flange 108b and the third flange Similarly, the flanges 116b are also arranged so that their flange surfaces are flush with each other.

[0070] The first flanges 106a, 106b and the third flanges 116a, 116b are The flanges 108a, 108b and the fourth flanges 118a, 118b are In other words, the first flange 106a is formed to have a long length. The through-holes 124a are provided to form a region in which the plurality of bolt holes 122 are provided. The flange 108a is disposed at a position higher than the area where the plurality of bolt holes 122 are provided. The third flange 116a is provided with a second through-hole 124b. Therefore, the area where the plurality of bolt holes 122 are provided is divided into a plurality of areas on the fourth flange 118a. The bolt holes 122 are disposed at a lower position than the area where the bolt holes 122 are provided. The positional relationship between the first flange 106b and the second flange 108b, the third flange The same applies to the positional relationship between 116b and the fourth flange 118b.

[0071] FIG. 9(B) shows a structure in which a first steel pipe column 102 and a second steel pipe column 112 are arranged in the vertical direction. 10 shows a state in which the first bolted joint 100a and the second bolted joint 100b are formed (not shown). However, a third bolt joint 100c and a fourth bolt joint 100d are formed on the rear side. The first bolted joint 100a is made up of a first flange 106a and a fourth flange 106b. 18a is sandwiched between the first splice plate 130a and the third splice plate 140a to hold the bolt and nut. Similarly, the second bolt joint 100b is formed by fastening the second bolt joint 100b. The first flange 108a and the third flange 116a are connected to the second splice plate 132a and the fourth splice plate 132b. The plate 142a is sandwiched between the plate 142a and the plate 142b and fastened with bolts and nuts. In this embodiment, if the strength of the bolt joint is sufficient, the bolt may be attached to the inside or outside. The splice plate that supports the shaft can be omitted.

[0072] FIG. 10 shows a front view of the joint structure of a steel pipe pole according to this embodiment. In FIG. 10A, the first splice plate 130a and the third splice plate 140a (not shown) are abutting both the first flange 106a and the fourth flange 118a, and the first through-hole 124a Such a configuration is suitable for the second bolt joint 100b, the third bolt joint 100c, and the The same applies to the bolt joint 100c (not shown) and the fourth bolt joint 100d. do.

[0073] As described with reference to FIGS. 9(A) and 9(B), the bolt of the first flange 106a The area where the bolt holes 122 are formed and the bolt holes 122 of the second flanges 108a and 108b are formed are The heights of the formed areas are different. Also, the bolt holes 122 of the third flange 116a and the bolt holes 122 of the fourth flanges 118a and 118b are formed. The heights of the first bolted joint 100a and the second bolted joint 100b are different. The heights of the first bolt joint 100b and the fourth bolt joint 100d are different. The through hole 124a is located below the first bolt joint 100a (not shown). The same is true for the third through hole 124c), and the second through hole 124b is located above the second bolt joint. The fourth through hole 124d is located above the fourth bolt joint portion 100d.

[0074] In this way, the heights of the bolt joints and through holes formed on adjacent surfaces are made different, and the By arranging the holes in a straight line, all the through holes on each side of the steel pipe column are arranged at the same height. This increases the strength of the steel pipe column against axial force, shear force, and bending stress. can.

[0075] As shown in FIG. 10, a first through hole 124a is provided in the first bolt joint 100a. On the surface disposed on the lower side and adjacent to the second through-hole 124b and the fourth through-hole 124d In this way, multiple penetrations of different heights are placed on the upper side of one bolt joint. The arrangement of the holes makes work at the construction site easier. Tools can be inserted through multiple through holes of different heights and directions to facilitate bolt joining work. It is possible.

[0076] FIG. 11(A) shows a cross-sectional structure of the portion indicated by the arrow A5 in FIG. 10. FIG. 11(B) shows the structure when the portion indicated by the arrow A6 in FIG. 10 is viewed in cross section.

[0077] As shown in FIG. 11(A), a first flange 106 is provided on the first diaphragm 104. a and the first flange 106b are arranged to face each other, and the second flange 108a and the second flange The flanges 108a and 108b are arranged so as to face each other. The first through-hole 124a is disposed on the first surface 11 side of the first steel pipe column 102, and the second through-hole 124b is disposed on the third surface 13 side. The third through-hole 124c is arranged on the second surface 12 side of the first steel pipe column 102. A fourth bolt joint portion 100b is formed on the fourth surface 14 side, and a fourth bolt joint portion 100d is formed on the fourth surface 15 side. As shown in FIG. 11(B), the third flange 11 is disposed on the second diaphragm 114. 6a and the third flange 116b are arranged to face each other, and the fourth flange 118a and The fourth flange 118b is disposed so as to face the fourth flange 118b. The second through-hole 124b is disposed on the second surface 22 side of the second steel pipe column 112, and the fourth surface 24 The fourth through hole 124d is disposed on the first surface 21 side of the second steel pipe column 112. A first bolted joint 100a is formed on the first surface 21, and a third bolted joint 100c is formed on the third surface 23. will be done.

[0078] As shown in FIG. 11(A), the second bolt joint 100b includes a first splice plate 130b, The second flange 108a is sandwiched between the third splice plate 140b and the bolt 15 is inserted into the bolt hole 122. The second flange 108a is formed by inserting a bolt 150 into the flange 108a and fastening it with a nut 152. By forming the bolt holes 122, the cross-sectional area of ​​the bolt holes 122 is larger than that of the other portions. However, by providing the first splice plate 130b and the third splice plate 140b, This compensates for the reduction in cross-sectional area and suppresses the reduction in shear strength. The thickness of the first and third support plates 140a can be set appropriately. The first bolted joint 100a, the third bolted joint 100c, and the fourth bolted joint 100d The same applies to

[0079] As is clear from FIG. 11(A) and FIG. 11(B), the first steel pipe column 102 and the second At the joint with the steel pipe column 112 of 2, through holes are arranged in four directions so as to be sandwiched between the bolt joint. In such a joint structure, the through hole is provided in the flange. The length of the flange that is not provided is made different in the material axis direction, and these two types of flanges are bolted together. As a result, as shown in Figures 9(B) and 10, the positions of the through holes and bolt joints can be determined obliquely. The flange provided at the joint portion has such a configuration. By doing so, the bolt joint for connecting the first steel pipe column 102 and the second steel pipe column 112 can be constructed. It can improve sexuality.

[0080] According to this embodiment, the first through-hole 124a, the second through-hole 124b, the third through-hole 124c, 24c and the fourth through-hole 124d are used as hand holes, and the joint where the flange is to be placed is The bolts are set from the inside of the hand part and tightened to secure the two steel pipe columns at the construction site. Bolt joints are technically easier than welding joints, and by following the procedures, quality can be improved. The quality can also be stabilized. By arranging the through holes diagonally (with different opening directions), the amount of welding at the construction site can be reduced. This minimizes the risk of bolt damage, improves workability of bolt joints, and ensures that the strength of the joints is equal to or greater than that of other parts. A joint structure having a strength equal to or greater than that can be obtained.

[0081] In this embodiment, as in the first embodiment, the thickness of the steel pipe column is changed in the middle of the first floor. That is, a bolt joint 100 is provided in the middle of the first floor, and the first steel By connecting the pipe column 102 and the second steel pipe column 112, the column diameter of the column base side (first steel pipe column 102) The diameter of the column head side (second steel pipe column 112) can be made thinner, and the bending moment It is possible to create a structure suitable for small stigmata.

[0082] [Fourth embodiment] In this embodiment, a frame having a through hole is provided in the joint structure of the steel pipe pole shown in the fourth embodiment. This shows an embodiment in which the lunge arrangement is different. In the following, the differences from the fourth embodiment will be mainly explained. Explain to your heart.

[0083] FIG. 12(A) shows a development of the joint of the steel pipe pole according to this embodiment, and FIG. 12(B) shows the joint of the steel pipe pole. 12(A) shows a perspective view of the joint of the pipe column. In addition, in FIG. 12(A), fasteners such as bolts and nuts are is omitted.

[0084] As shown in FIG. 12(A), a second surface 11 is formed on the first diaphragm 104. A first flange 106a having a through hole 124a is provided, and the first flange 106a is provided corresponding to the second surface 12. A first flange 106b having a second through hole 124b is provided. A second flange 108a (not shown) is provided corresponding to the fourth surface 14. The second diaphragm 114 is provided with a second flange 108b. A fourth flange 118a is provided corresponding to the second surface 22, and a fourth flange 118b is provided corresponding to the second surface 22. Also, a third through hole 124c (not shown) is provided corresponding to the third surface 23. A third flange 116a is provided, and a fourth through-hole 124d (see FIG. A third flange 116b having a flange 116c (not shown) is provided.

[0085] That is, in this embodiment, the first diaphragm 104 side, the second diaphragm On both sides of 114, flanges having through holes are arranged adjacent to each other. In other words, the joint structure of the steel pipe pole according to this embodiment has a first flange 106a and a first The flange 106b, the third flange 116a, and the third flange 116b are respectively The electrodes are arranged to form an L-shape.

[0086] As shown in FIG. 12(B), when the first steel pipe column 102 and the second steel pipe column 112 are joined together, The two L-shaped structures are then positioned so that they interlock. As a result, the first bolt joint The first bolt joint portion 100a and the second bolt joint portion 100b are formed at the same height, and the first through hole 124 a and the second through-hole 124b are disposed at the same height.

[0087] FIG. 13 shows a front view of the joint structure of the steel pipe pole according to this embodiment. The first bolt joint portion 100a is formed on the side of the first surface 21 and the second surface 12. A second bolt joint portion 100b is formed on the side of the fourth surface 14 and a fourth bolt joint portion 100c is formed on the side of the fourth surface 14 and the fourth surface 24. A bolt joint portion 100d is formed (not shown, but on the third surface 13 and the third surface 23 side). A third bolt joint 100c is formed.

[0088] As shown in FIG. 13, the first through-hole 124a and the second through-hole 124b are adjacent two through-holes. In other words, the first bolt joint 100a is disposed below the first bolt joint 100b. The second through hole 124a is disposed below the second bolt joint 100b. The fourth through-hole 124d is connected to the third through-hole 124c (not shown). The fourth through hole 124d is located at the same height as the fourth bolt joint 100d. is placed above the

[0089] FIG. 14(A) shows a cross-sectional structure of the portion indicated by the arrow A7 in FIG. 13. FIG. 14(B) shows the cross-sectional structure of the portion indicated by the arrow A8 in FIG.

[0090] As shown in FIG. 14(A), a first flange 106 is provided on the first diaphragm 104. a and the first flange 106b are arranged in an L-shape, and the second flange 108a and the second flange The flange 108b is arranged in an L-shape. By arranging the flanges in this way, the first steel pipe column The first through-hole 124a is disposed on the first surface 11 side of the 102, and the second through-hole 124b is disposed on the second surface 12 side. 124b are arranged at the same height. Also, the third bolt 124b is arranged on the third surface 13 side of the first steel pipe column 102. A fourth bolt joint 100c is formed on the fourth surface 14 side, and a fourth bolt joint 100d is formed at the same height. 14(B), the second diaphragm 114 is formed on the first diaphragm 114. The third flange 116a and the third flange 116b are arranged in an L-shape, and the fourth flange The flanges 118a and 118b are arranged in an L-shape. As a result, the third through-hole 124c is disposed on the third surface 23 side of the second steel pipe column 112, and the fourth surface The fourth through hole 124d is disposed at the same height on the second steel pipe column 112 side. A first bolt joint 100a is formed on the first surface 21 side, and a second bolt joint 100b is formed on the second surface 22 side. 100b is formed to the same height.

[0091] The joint structure of the steel pipe column according to this embodiment has through holes of the same height on two adjacent faces, Through holes of the same height are provided on two other adjacent surfaces opposite to the two adjacent surfaces, and the adjacent The height of the through holes is different between the two adjacent faces and the other two adjacent faces. Such an arrangement of through holes makes it easier to work when using both arms to install bolt connections, for example. The workability can be improved. By arranging them in an oblique pattern, workability is improved when forming bolt joints on each surface. This reduces the amount of welding required at the construction site, improves the workability of bolt joints, and A joint structure can be obtained in which the strength of the part is equal to or greater than that of the other parts. In addition, since the through holes on each side of the steel pipe column are not all positioned at the same height, This can prevent the strength of the part from decreasing.

[0092] The arrangement of the flange with the through holes is different from that shown in Figure 12(A). Fig. 15(A) shows a development view of a joint portion of a steel pipe pole according to another embodiment of the present invention, Figure 15(B) shows a perspective view of the joint of the steel pipe pole. The cross-sectional structure of the area indicated by the arrow A10 is shown in FIG. 16(A). The resulting structure is shown in FIG.

[0093] As shown in FIG. 15(A), the first steel pipe column 102 has a first surface 11 corresponding to the first surface 11. The flange 106a is provided, and the second flange is provided corresponding to the 12th, 13th, and 14th surfaces. The first flange 108a, the second flange 108b, and the third flange 108c are arranged to form a U-shape. The flange 106a is provided with a first through hole 124a. Only bolt holes 122 are provided in 8b and 108c, and no through holes for forming hand holes are provided. On the second steel pipe column 112 side, a fourth flange 118 is provided corresponding to the 21st surface. a, and third flanges 116a, 116b, 116c, 116d, 116e, 116f, 116g, 116h, 116m ... The third flange 116a is provided with the first flange 116b and the second flange 116c so as to form a U-shape. In addition, although not shown in FIG. 15(A), a third through-hole 124b is provided. The flange 116b is provided with a third through-hole 124c, and the third flange 116c is provided with a third through-hole 124c. The fourth flange 118a has only the bolt holes 122. There is no through hole for forming a hand hole.

[0094] FIG. 15(B) shows a first steel pipe pole 102 and a second steel pipe pole 112 having such an arrangement. As shown in FIG. 15(B), the first through-hole 12 4a is arranged on the side closer to the first steel pipe column 102, while the second through-hole 124b (and The third through hole 124c and the fourth through hole 124d are arranged on the side closer to the second steel pipe column 112. As described above, the structure of the joint portion of the steel pipe pole according to another embodiment of the present invention is The second through-hole 124b (and the third through-hole 124c and the fourth through-hole 124a) In other words, the second through-hole 124d is disposed at a different height from the first through-hole 124a. The through-holes 124b (and the third and fourth through-holes 124c and 124d) are arranged in an oblique shape. It will be placed.

[0095] As shown in FIG. 16(A), the first through-hole 124a is disposed on the first surface 11 side, and the second surface The second bolt joint 100b is on the 12 side, and the third bolt joint 100c is on the 3rd surface 13 side. 16(B), the fourth bolt joint portion 100d is disposed on the fourth surface 14 side. In this way, the second through-hole 124b is formed on the second surface 22 side, and the third through-hole 124c is formed on the third surface 23 side. However, the fourth through-hole 124d is disposed on the fourth surface 24 side, and the first bolt joint is disposed on the first surface 21 side. In this way, by changing the arrangement of the flanges, the The through holes provided on one surface are set to the same height, and the through holes provided on the other surface are set to different heights. And by placing three through holes at the height, it is possible to install the structure by multiple people. In this case, two workers can work simultaneously without interfering with each other. By varying the height of each through hole, tools can be inserted from different angles. This improves the workability of bolt joining. The through-hole 124b, the third through-hole 124c, and the fourth through-hole 124d are each obliquely This arrangement improves workability when forming bolt joints on each surface. This minimizes the amount of welding at the construction site, improves the workability of bolt joints, and It is possible to obtain a joint structure in which the strength of the joint is equal to or greater than that of the other parts. The through holes on each side of the steel pipe column are not all at the same height, The decrease in strength can be suppressed.

[0096] Furthermore, in this embodiment, as in the first embodiment, the thickness of the steel pipe column is In other words, by providing a bolt joint 100 in the middle of the first floor, By connecting the first steel pipe column 102 and the second steel pipe column 112, the column base side (first steel pipe column 102) The column diameter on the column head side (second steel pipe column 112) can be made thicker and the column diameter on the column head side (second steel pipe column 112) can be made thinner, It is possible to create a structure suitable for a column capital with a small ment.

[0097] [Fifth embodiment] In the joint structure of the steel pipe pole shown in the fourth embodiment, a reinforcing plate is provided as in the second embodiment. This embodiment is directed to a steel structure when a reinforcing plate is provided on a flange having a through hole. The joint structure of the pipe column is shown.

[0098] FIG. 17(A) shows a development view of a joint portion in a joint structure of a steel pipe pole according to this embodiment, Fig. 17(B) shows a perspective view of the joint structure of the steel pipe pole according to this embodiment. In this figure, fastening members such as bolts and nuts are omitted.

[0099] As shown in FIGS. 17A and 17B, the first reinforcing plate 160 is 106a, 106b are provided in the area surrounded by the second flanges 108a, 108b. The first reinforcing plate 160 is erected in a direction parallel to the material axis direction of the first steel pipe column 102, and Both of them are provided so as to contact the inner flange surfaces of the first flanges 106a and 106b. The first reinforcing plate 160 is formed on the inner flange surfaces of the second flanges 108a and 108b. The second steel pipe column 112 may have a cross-shaped configuration in plan view so as to be in contact with the On the other side, a second reinforcing plate 162 having a similar structure is provided.

[0100] FIG. 18 shows a front view of the joint structure of a steel pipe pole according to this embodiment. A first through-hole 124a (and a third through-hole 124c, not shown) is provided on the side. The first reinforcing plate 160 is provided at the same height as the part. The second through-hole 124b and the fourth through-hole 124d are provided at the same height as the second through-hole 124b. A stiffening plate 162 is provided.

[0101] The first reinforcing plate 160 has one end fitted into the first through-hole 124a of the first flange 106a. (The first flange 106b is not shown in the figure.) The same applies to the first reinforcing plate 160. In addition, when the first reinforcing plate 160 has a cross shape, the second The second reinforcing plate 162 is provided so as to abut against the flanges 108a and 108b. One end of the third flange 116a abuts against the second through-hole 124b at the position where the second through-hole 124b is provided. The other end abuts against the position of the third flange 116b where the fourth through-hole 124d is provided. In addition, when the second reinforcing plate 162 has a cross shape, The first reinforcing plate 160 and the second reinforcing plate 161 are provided so as to abut against the flanges 118a and 118b of the first reinforcing plate 160. The second reinforcing plate 162 is fixed to the respective flanges that it abuts by welding.

[0102] In this way, the first flanges 106a and 106b are provided at positions where the through holes are to be formed. By providing the reinforcing plate 160, the strength of that portion can be increased. The flanges 106a and 106b are provided with a first through-hole 124a and a third through-hole 124c. Similarly, the strength of the third flanges 116a and 116b can be increased. By providing a second reinforcing plate 162 at the position where the through hole is provided, the strength of that portion is increased. It is possible.

[0103] The first reinforcing plate 160 has the first through-hole 124a (and the third through-hole 124b (not shown)). A first cutout portion 164a may be provided at a position overlapping with the second reinforcing plate 16 2, the second cutout portion 124b is provided at a position overlapping with the second through-hole 124b and the fourth through-hole 124d. The shapes of the first notch portion 164a and the second notch portion 164b may be The shape may be any, but for example, it may have a semicircular shape having approximately the same diameter as each of the through holes. The first reinforcing plate 160 and the second reinforcing plate 162 may have a first notch 164a. By providing the second cutout portion 164b, the reinforcing plate does not block a part of the through hole. This allows for easy insertion of tools through the respective through holes. Even if the reinforcing plate is used, it is possible to prevent the reinforcing plate from getting in the way and the workability from being reduced.

[0104] FIG. 19(A) shows the cross-sectional structure of the portion indicated by the arrow A11 in FIG. 19(B) shows the cross-sectional structure of the portion indicated by the arrow A12 in FIG. .

[0105] As shown in FIG. 19(A), the first flange 106a and the first flange 106b A first reinforcing plate 160 is provided so as to contact the flange surface on the side. In the case where the first reinforcing plate 160 has a cross shape in a plan view, the second flange 108 a and the inner flange surface of the second flange 108b. The strong plate 160 is provided at a position overlapping the first through-hole 124a and the third through-hole 124c. The first reinforcing plate 160 has a first notch at the end thereof so as not to block a part of these through holes. The second reinforcing plate 162 shown in FIG. 19(B) also has a similar structure. , a second notch 164 is formed at the end that overlaps with the second through-hole 124b and the fourth through-hole 124d. b is provided.

[0106] As shown in Figures 19(A) and 19(B), a reinforcing plate is provided at the location where the flange is provided. By doing so, the strength of that part can be increased. In this case, by providing a reinforcing plate, the decrease in strength (rigidity) caused by providing a through hole can be compensated for. It is possible to do so.

[0107] Furthermore, the first reinforcing plate 160 and the second reinforcing plate 162 are joined by bolts. For example, as shown in FIG. 20, a first reinforcing plate 160 and a second reinforcing plate 162 may be connected to each other. A fifth splice plate 144 and a sixth splice plate 146 are provided in contact with each other, and the same as the example shown in the second embodiment, The fifth splice plate 144 and the sixth splice plate 146 are , a first notch 164a formed in the first reinforcing plate 160, a second notch 164b formed in the second reinforcing plate 162, It is preferable that the width of the second cutout portion 164b is such that it does not overlap with the second cutout portion 164b.

[0108] The other configurations of the steel pipe pole according to this embodiment are the same as those according to the fourth embodiment. That is, in this embodiment, the same effects as in the first embodiment can be obtained. Similarly, it is possible to change the thickness of the steel pipe column in the middle of the first floor section, and the base side (first steel pipe column 102) and the column diameter on the column head side (second steel pipe column 112) can be made thinner, It is possible to create a structure suitable for column capitals with small bending moments.

[0109] [Sixth embodiment] In this embodiment, the flange configuration is different from that of the joint structure of the steel pipe pole shown in the third embodiment. The following description will focus on the differences from the third embodiment.

[0110] FIG. 21(A) shows a development of the joint of the steel pipe pole according to this embodiment, and FIG. 21(B) shows the joint of the steel pipe pole. 22(A) shows a perspective view of the joint portion of the pipe column. Also, FIG. 22(A) shows the arrow A13 in FIG. 21(B). 22(B) shows the cross-sectional structure of the portion indicated by the arrow in FIG. 21(B). The structure shown in Fig. 21(A) is a cross-sectional view of the portion indicated by A14. In the following description, fasteners such as nuts are omitted. (B), and FIGS. 22(A) and 22(B).

[0111] In this embodiment, the first flange 106a in which the first through-hole 124a is provided is The second steel pipe column 102 has a thickness greater than that of the first steel pipe column 102 and is provided with a second through hole 124b. The third flange 116a has a thickness greater than the wall thickness of the second steel pipe column 112. In addition to the first diaphragm 104, the plate thickness of the flange in which the through hole is provided is set to the thickness of the steel pipe column. By making it larger than the thickness, through holes are provided and shear stress due to bolt holes is reduced. It can compensate for the decrease in strength (rigidity) against force, bending stress, and axial stress.

[0112] The thickness of the second flange 108a is relatively large compared to the thickness of the third flange 116a. The second flange 132a and the fourth flange 142a may be thin. When the third flange 116a and the third flange 116b are sandwiched between them, a gap is not formed due to the difference in plate thickness. A spacer 148b is provided on the back surface of the second flange 108a. The thickness is approximately the same as the difference in plate thickness between the second flange 108a and the third flange 116a. The bolt holes are provided, and the bolt holes are sandwiched between the second flange 108a and the fourth splice plate 142a. The bolt joint can be formed so that no gaps are formed due to the cracks. As shown in FIG. 2(B), a spacer is provided at each bolt joint (first bolt joint 1 A spacer 148a is provided at the first bolt joint 100a, a spacer 148b is provided at the second bolt joint 100b, and a spacer 148c is provided at the third bolt joint 100c. A spacer 148c is attached to the fourth bolt joint 100c, and a spacer 148 d is provided).

[0113] Regarding the second flange 108 and the fourth flange 118 in which no through-holes are provided, Similarly, by increasing the plate thickness, the shear force and bending force due to the bolt holes are reduced. It can compensate for the decrease in strength (rigidity) against stress and axial stress.

[0114] The joint structure of the steel pipe pole according to this embodiment is the same as that of the third embodiment except that the flange thickness is increased. Therefore, in addition to the above-mentioned effects, the same advantageous effects as those of the third embodiment are obtained. This embodiment can be appropriately combined with the fourth and fifth embodiments. This can be implemented in the same way.

[0115] [Seventh embodiment] The joint structure of a steel pipe pole according to one embodiment of this embodiment is shown in Figs. 23(A) and 23(B). The explanation will be given with reference to Fig. 23(A) which shows the development of the joint of the steel pipe column, and Fig. 22(B) which shows the joint of the corner The following is a perspective view of the joint of a steel pipe column. In Figure 23(A), the fastening of bolts, nuts, etc. The fittings are omitted.

[0116] In FIG. 23(A), a first steel pipe column 102, a first diaphragm 104, and a The configuration of the second steel pipe column 112 and the second diaphragm 114 is the same as that of the first embodiment. .

[0117] On the first diaphragm 104, first L-shaped flanges 107a, 107b and second L-shaped flanges 107b are provided. The first L-shaped flanges 109a and 109b are joined together. b, and the second L-shaped flanges 109a, 109b are two flat flanges as shown in the figure. It may have a shape in which flanges are connected in an L-shape, or may be made of angle iron or metal (not shown). The first L-shaped flanges 107a, 107b, and Each of the second L-shaped flanges 109a and 109b is formed by arranging two flat flanges in an L-shape. and those with two flat flanges arranged in an L-shape. Each L-shaped flange may have a A plurality of bolt holes 122 are provided.

[0118] FIG. 23(A) shows the first L-shaped flanges 107a and 107b and the second L-shaped flange 109. 109a and 109b are disposed in correspondence with the corners of the first diaphragm 104. The first L-shaped flange 107a is connected to the corners of the first surface 11 and the fourth surface 14, and the second L-shaped flange 1 109a is attached to the corner of the first surface 11 and the second surface 12, and the first L-shaped flange 107b is attached to the corner of the second surface 12. and a second L-shaped flange 109b is provided at the corner of the third surface 13 and the fourth surface 14. This shows an embodiment in which the L-shaped flange is disposed corresponding to the first die. On the aphragm 104, first L-shaped flanges 107a and 107b and a second L-shaped flange 107b are provided. An area surrounded by 09a and 109b is formed.

[0119] The widths L1 and L2 of the first L-shaped flange 107a are equal to the width LD1 of the first diaphragm 104. The first L-shaped flange 107b and the second L-shaped flange 107c are smaller than half of the The width of the first L-shaped flange 107a is also the same as that of the first L-shaped flange 107b. Therefore, a first gap is formed between the first L-shaped flange 107a and the second L-shaped flange 109a. 110a is formed between the second L-shaped flange 109a and the first L-shaped flange 107b. A second gap 110b is formed between the first L-shaped flange 107b and the second L-shaped flange 110c. A third gap 110c is formed between the second L-shaped flange 109b and the first L-shaped flange 110c. A fourth gap 110d is formed between the flange 107a and the flange 107b.

[0120] The second diaphragm 114 has third L-shaped flanges 117a, 117b and a fourth The L-shaped flanges 119a and 119b are joined together. The third L-shaped flanges 117a and 117b , and the fourth L-shaped flanges 119a, 119b are substantially the same as the first L-shaped flange 107a. The third L-shaped flanges 117a, 117b and the fourth L-shaped flange 11 19a, 119b are first L-shaped flanges 107a, 107b and second L-shaped flanges 107a, 107b. Like 109a and 109b, they are arranged to correspond to the corners of the second diaphragm 114. As a result, the second diaphragm 114 is provided with third L-shaped flanges 117a and 117b. , an area surrounded by the fourth L-shaped flanges 119a and 119b is formed. A fifth gap 111a is formed between the L-shaped flange 117a and the fourth L-shaped flange 119a. A sixth gap 119a is formed between the fourth L-shaped flange 119a and the third L-shaped flange 117b. 11b is formed between the third L-shaped flange 117b and the fourth L-shaped flange 119b. A seventh gap (111c) (not shown) is formed, and a fourth L-shaped flange 119b (not shown) is formed. An eighth gap (111d) (not shown) is formed between the third L-shaped flange 117a and the third L-shaped flange 117b. It is done.

[0121] When the first steel pipe column 102 and the second steel pipe column 112 are arranged vertically, the first L-shaped flange The flange 107a and the third L-shaped flange 117a are arranged vertically, and the flange surfaces are flush with each other. The second L-shaped flange 109a and the fourth L-shaped flange 119a are also arranged so that Similarly, they are lined up vertically and arranged so that the flange surfaces are flush with each other. The arrangement of the flange 107b and the third L-shaped flange 117b, and the second L-shaped flange 109 The same applies to the arrangement of the fourth L-shaped flange 119b and the fourth L-shaped flange 119b.

[0122] The outer flange surfaces of the first L-shaped flange 107a and the third L-shaped flange 117a are The first support plates 130a and 130b are abutted against the second L-shaped flange 109a and the fourth Second support plates 132a and 132b are in contact with the outer flange surface of the L-shaped flange 119a. In addition, the inner flanges of the first L-shaped flange 107a and the third L-shaped flange 117a are The third support plates 140a and 140b are in contact with the flange surface, and the second L-shaped flange 109b The fourth L-shaped flange 119a has a fourth support plate 142a, 142b on the inner flange surface thereof. The first support plates 130a and 130b are plate-shaped members having a plurality of bolt holes. 122 is provided. The other splices have a similar configuration.

[0123] FIG. 23(B) shows that the first L-shaped flange 107a and the third L-shaped flange 117a are The first bolt is sandwiched between the first and second splices 130a and 130b and the third splice plates 140a and 140b. The structure shown is formed with a second bolt joint 100a. Similarly, the joint 100c (and the fourth bolt joint 100d, not shown) are arranged vertically. The structure is bolted together with an L-shaped flange and a splice plate.

[0124] In FIG. 23(B), the first steel pipe column 102 and the second steel pipe column 112 are arranged in the vertical direction, First bolted joint 100a, second bolted joint 100b, third bolted joint 100 10C shows the structure joined by bolt joint 100c (and a fourth bolt joint 100d not shown).

[0125] As shown in FIG. 23(B), the first bolted joint 100a and the second bolted joint 100 Between the first opening 120 and the fifth gap 110a and the fifth gap 111a, In addition, a portion a between the second bolt joint 100b and the third bolt joint 100c is formed. A second opening 120b is formed between the second gap 110b and the sixth gap 111b. The first opening 120a is formed between the first surface 11 of the first steel pipe column 102 and the second steel pipe column The first opening 120a faces the first surface 21 of the first steel pipe column 102, and the first opening 120b faces the second surface 12 of the first steel pipe column 102. and faces the second surface 22 of the second steel pipe column 112.

[0126] Fig. 24 shows a front view of the joint structure of the steel pipe pole according to this embodiment. The corner where the first surface 11 and the fourth surface 14 of the column 102 are adjacent, and the first surface 11 of the second steel pipe column 112 The first bolt joint portion 100a is formed at the corner where the surface 21 and the fourth surface 24 are adjacent to each other. The corner where the first surface 11 and the second surface 12 of the steel pipe column 102 are adjacent, and the corner where the second steel pipe column 112 is adjacent A second bolt joint 100b is formed at the corner where the first surface 21 and the second surface 22 are adjacent to each other.

[0127] The first opening 120a is formed by the first L-shaped flange 107a and the third L-shaped flange 117a. a, a second L-shaped flange 109a, a fourth L-shaped flange 119a, and a first diaphragm The first opening 120 is an area surrounded by the ram 104 and the second diaphragm 114. a is the height and width of the first L-shaped flange 107a and the third L-shaped flange 117a The size can be set by the length (L2 shown in FIG. 23(A)).

[0128] FIG. 25(A) shows the cross-sectional structure of the portion indicated by the arrow A15 in FIG. 24. 25(B) shows the cross-sectional structure of the portion indicated by the arrow A16 in FIG. 24. .

[0129] As shown in FIG. 25(A), a first L-shaped flange 104 is provided on the first diaphragm 104. 07a, 107b, and the second L-shaped flanges 109a, 109b are at the corners of the first steel pipe column 102. The flanges are spaced apart from each other, and a first gap 11 is formed in the first surface 11. 0a, a second gap 110b on the second surface 12, a third gap 110c on the third surface 13, and a fourth gap 110d on the fourth surface 14. As shown in FIG. 25(B), a fourth gap 110d is formed between the second diaphragm 1 14, third L-shaped flanges 117a, 117b, fourth L-shaped flanges 119a, 1 19b are arranged corresponding to each corner of the second steel pipe column 112. Each flange is arranged at a distance. A fifth gap 111a is formed on the first surface 21, a sixth gap 111b is formed on the second surface 22, and a sixth gap 111c is formed on the third surface 23. A seventh gap 111c is formed in the fourth surface 24, and an eighth gap 111d is formed in the fourth surface 24.

[0130] As shown in FIGS. 25(A) and 25(B), the first L-shaped flange 107a and the third L-shaped flange 107b are First support plates 130a and 130b are abutted against the L-shaped flange 117a from the outside, The third support plates 140a and 140b are abutted from the inside, and the bolts inserted into the bolt holes 122 are The bolt 150 and the nut 152 form a first bolt joint 100a. A second splice plate is attached to the L-shaped flange 109a and the fourth L-shaped flange 119a from the outside. The fourth support plates 132a and 132b are abutted against each other from the inside, and the fourth support plates 142a and 142b are abutted against each other from the inside. The first L-shaped flange 107b and the third L-shaped flange 107c are formed. Regarding the flange 117b, the second L-shaped flange 109b, and the fourth L-shaped flange 119b, Similarly, a third bolted joint 100c and a fourth bolted joint 100d are formed. .

[0131] The first gap 110a and the fifth gap 111a are arranged at overlapping positions to form the first opening 1. 20a is formed, and the second gap 110b and the sixth gap 111b are arranged at an overlapping position. The second opening 120b is formed by the gap 110c, and the third gap 110c and the seventh gap 111c overlap each other. The third opening 120c is formed at a position corresponding to the fourth gap 110d, and the eighth gap 110e is formed at a position corresponding to the fourth gap 110d. A fourth opening 120d is formed at a position overlapping with 111d.

[0132] As shown in Figures 25(A) and 25(B), the first L-shaped flanges 107a and 107b , the second L-shaped flanges 109a, 109b are attached to the first diaphragm 104 Therefore, the wall thickness of the third L-shaped flange 102 can be made thicker than that of the first steel pipe column 102. The flanges 117a and 117b and the fourth L-shaped flanges 119a and 119b are connected to the second diaphragm 1. 14, the wall thickness of the second steel pipe column 112 can be made thicker than that of the second steel pipe column 112. This increases the strength of the bolt joint. Therefore, the weight of the joint can be prevented from increasing. However, if the strength of the bolt joint can be secured sufficiently, the splice plate and Of the splice plates arranged on the inside and the outside, the splice plate on one side may be omitted.

[0133] The joint structure of the steel pipe column according to this embodiment is a hand hose joint structure using an L-shaped flange. The structure shown in Figures 23(A) and 23(B) is The figure shows a configuration in which L-shaped flanges are arranged on both sides of the first steel pipe column 102 and the second steel pipe column 112. However, the present invention is not limited to this embodiment. For example, as shown in Figures 26(A) and 26(B), As shown, an L-shaped flange and a flat flange may be combined.

[0134] As shown in the development view of FIG. 26(A), the first steel pipe column 102 is provided with a first diaphragm. 104, first L-shaped flanges 107a, 107b, second L-shaped flanges 109a, 1 09b is joined, and a fourth frame is attached to the second steel pipe column 112 on the second diaphragm 114. Lunges 118a, 118b, 118c (not shown), and 118d are joined. The first L-shaped flanges 107a and 107b and the second L-shaped flanges 109a and 109b are The flanges 118a, 118b, 118c (not shown), and 118d are flush with each other. The first L-shaped flange 107a and the fourth flange 118a are arranged so as to The first support plates 130a and 130b and the third support plates 140a and 140b are in contact with the first support plate 18d. and bolted together, and the second L-shaped flange 109a and the fourth flanges 118a, 119 8b, second support plates 132a and 132b and fourth support plates 142a and 142b are in contact with the and bolted together.

[0135] As shown in FIG. 26(B), the first bolted joint 100a and the second bolted joint 100 a first opening 120a is formed between the second bolt joint 100b and the third bolt joint 100c. A second opening 120b is formed between the first opening 120a and the second opening 120b. The height of the first L-shaped flange 107a and the second L-shaped flange 120b is The height of the third surface 13 is approximately equal to the height of the first surface 109a (length in the material axis direction). Similarly, a third opening is formed on the side of the first surface 12 and a fourth opening is formed on the side of the fourth surface 14 .

[0136] In addition, in Figures 26(A) and 26(B), an L-shaped flange is provided on the side of the first steel pipe column 102. The second steel pipe column 112 is provided with a flat flange. is an example, in which a flat flange is provided on the side of the first steel pipe pole 102, and a second steel pipe pole 112 An L-shaped flange may be provided on the side.

[0137] Also, the L-shaped flange may be provided with a rib. The first L-shaped flanges 107a, 107b and the second L-shaped flanges 109a, 109b 27(B) shows a perspective view thereof, and FIG. 27(B) shows a plan view thereof. The rib 166a is a first L-shaped flange. The first L-shaped flange 107b and the second L-shaped flange 109 are provided inside the first L-shaped flange 107a. Similarly, ribs 166b, 166c, and 166d are provided on the sides 109a and 109b, respectively. By providing ribs like this, the out-of-plane rigidity of the L-shaped flange can be increased. This increases the local buckling resistance against the compressive axial force acting on the bolt joint, making it strong. A joint structure can be provided.

[0138] According to this embodiment, the handle is inserted between the four bolt joints formed by the L-shaped flange. The openings that can be used as drain holes make bolting easier. In other words, the joint between the first steel pipe pole 102 and the second steel pipe pole 112 By providing four openings facing in different directions, bolt connection work can be easily performed. In this type of joint structure, by placing L-shaped flanges in four places, the steel pipe column Thus, the strength against shear stress and bending stress acting on the wall can be increased. According to the report, the amount of welding at construction sites will be minimized, bolt joint workability will be improved, and joint A joint structure can be obtained in which the strength of the joint portion is equal to or greater than that of the other portions.

[0139] In addition, to form a bolt joint, one of the flanges arranged above and below in the material axis direction is made into an L-shape. By using one flange as a support and the other as a flat flange, the shear force and bending stress acting on the steel pipe column can be reduced. This embodiment also reduces the amount of welding at construction sites. To minimize this, improve the workability of bolt joints, and ensure that the strength of the joints is equal to or greater than that of other parts. A joint structure having the above strength can be obtained.

[0140] In this embodiment, as in the first embodiment, the thickness of the steel pipe column is changed in the middle of the first floor. It is possible to make the diameter of the column base side (first steel pipe column 102) thicker and the diameter of the column head side (second steel The diameter of the pipe column 112 can be made thinner, making it suitable for column heads with small bending moments. can be created.

[0141] [Eighth embodiment] In this embodiment, a groove-shaped flange is provided instead of the L-shaped flange shown in the seventh embodiment. The following explanation will focus on the differences from the seventh embodiment. .

[0142] FIG. 28(A) shows a development of the joint structure of a steel pipe pole according to this embodiment, and FIG. 28(B) shows the same. 28(A) shows a perspective view of the same. In FIG. 28(A), fastening members such as bolts and nuts are omitted. It is being done.

[0143] As shown in FIG. 28(A), the first diaphragm 104 is provided with a first grooved flange 170. The first groove flange 170 and the second groove flange 172 are joined together. The flange 172 has a groove shape in which both ends of a flat flange are bent in the same direction. The first groove flange 170 and the second groove flange 172 are bent in a grooved shape so that their sides face each other. In other words, the first groove flange 170 and the second groove flange 172 is a groove-shaped surface disposed on the first diaphragm 104 facing inward. In addition, the first groove flange 170 and the second groove flange 172 have flange surfaces that are The first groove flange 170 is oriented in a direction parallel to the material axis direction of the first steel pipe column 102. The second grooved flange 172 has a flat portion along one side of the first diaphragm 104, The groove-shaped bent portion has a flange surface, and a plurality of bolt holes 122 are provided in each flange surface. do.

[0144] The length L3 of the bent portion of the first groove flange 170 and the length L4 of the bent portion of the second groove flange 170 are The total length L4 of the groove-shaped bent portion of the first diaphragm 104 is Therefore, the first groove flange 170 and the second groove flange 171 have a width smaller than 1 / 2 of the width LD1. When the grooved flange 172 is placed opposite to the grooved flange 172, the grooved bent ends come into contact with each other. Instead, the gaps 110a and 110b may be arranged to have a first gap 110a and a second gap 110b.

[0145] The second diaphragm 114 has a third groove flange 180 and a fourth groove flange 181. 2 are joined. The third groove flange 180 and the fourth groove flange 182 are joined to the first groove. The second grooved flange 170 and the second grooved flange 172 have the same configuration, and the second diaphragm However, the first gap 110a is on the first surface 11 side, and the second gap The gap 110b is formed on the third surface 13 side, while the third groove flange 180 and the fourth groove flange 180 are formed on the third surface 13 side. The fifth gap 111a formed by the grooved flange 182 is located on the second surface 22 side. The gap 111b is located on the fourth surface 24 side.

[0146] When the first steel pipe column 102 and the second steel pipe column 112 are arranged vertically, the first channel flange The flange 170 and the third groove flange 180 are arranged so that their flange surfaces are flush with each other. Similarly, the second groove flange 172 and the fourth groove flange 182 are also positioned The flange faces are arranged flush.

[0147] The first groove flange 170 and the third groove flange 180 have outer flange surfaces with first grooves 170 and 180a. The first and second splices 130a and 130b are in contact with the inner flange surface, and the third splice 140a and The first splice plates 130a, 130b and 140b are abutted against each other to form a bolt joint. The second splices 132a, 132b are connected to the first groove flange 170 and the third groove flange The second grooved flange 172 and the second grooved flange 180 have a length that can abut against each other. The outer flange surfaces of the fourth grooved flange 182 are provided with second splice plates 132a, 132b. The inner flange surface is abutted against the fourth splice plates 142a and 142b, and the bolts are A joint is formed.

[0148] FIG. 28(B) shows a structure in which a first steel pipe pole 102 and a second steel pipe pole 112 are arranged in the vertical direction and connected. By joining together, a first bolt joint 100a, a second bolt joint 100b, 1 shows a state in which the third bolt joint 100c is formed (although not shown, the fourth bolt joint 100c is formed on the rear side). The first bolted joint 100a is formed by a first grooved flange. The flange 170 and the third groove flange 180 are connected to the first splice plate 130a and the third splice plate 130b. 40a, and the first splice plate 130b and the third splice plate 140b (not shown). The second bolt connection is also used. The joint 100b is formed by the second groove flange 172 and the fourth groove flange 182 being joined together by the second joining member. The second splice plate 132a and the fourth splice plate 142a (not shown), and the second splice plate 132b and the fourth splice plate 142b (not shown) and a splice plate 142b (not shown) and fastened with bolts and nuts. The third bolt joint 100c is formed by the second groove flange 172 and The fourth groove flange 182 and the fourth bolt joint 100d are connected to the first groove flange 170 and a fourth groove flange 182 are similarly formed through the splice plate.

[0149] As shown in FIG. 28(B), the first surface 11 of the first steel pipe column 102 and the second steel pipe column 112 A first opening 120a is formed on the first surface 21 side of the first steel pipe column 102. A second opening 120b is formed on the second surface 22 side of the first steel pipe column 12 and the second steel pipe column. The opening 120a includes a first grooved flange 170, a second grooved flange 172, and a third grooved flange 173. The second diaphragm 104 is formed in an area surrounded by the groove flange 180 and the first diaphragm 104. The opening 120b is formed by a second groove flange 172, a third groove flange 180, and a fourth groove flange 190. It is formed in an area surrounded by the grooved flange 182 and the second diaphragm 114 .

[0150] The cross-sectional structure of the portion indicated by the arrow A17 in FIG. 28(B) is shown in FIG. 29(A), and the other mark A1 The cross-sectional structure of the portion indicated by 8 is shown in FIG. 29(B). As shown in FIG. 29(A), the first groove shape The flange 170 and the second grooved flange 172 are spaced apart to form a first surface. A first gap 110a is formed on the 11 side, and a second gap 110b is formed on the third surface 13 side. The first gap 110a forms a first opening 120a, and the second gap 110b forms a third opening 120b. As shown in FIG. 29(B), the third grooved flange 180 and the second grooved flange 181 form an opening 120c. The fourth groove flange 182 is spaced apart from the fourth groove flange 182, so that a fifth gap is formed on the second surface 22 side. A fifth gap 111a is formed on the fourth surface 24 side, and a sixth gap 111b is formed on the fourth surface 24 side. The sixth gap 111b forms the fourth opening 120d. Complete.

[0151] As shown in FIGS. 29(A) and 29(B), the first opening 120a and the third opening 120c is formed by a first groove flange 170 and a second groove flange 172; The second opening 120b and the fourth opening 120d are connected to the third groove flange 180 and the fourth groove flange 181. The grooved flange 182 defines the first opening 120a and the third opening 120b. The mouth 120c, the second opening 120b and the fourth opening 120d are formed at different heights. That is, as shown in FIG. 28(B), the second opening 120a is formed on the first opening 120a. The opening 120b is formed at a high position.

[0152] In this way, the joint structure of the steel pipe column according to this embodiment has two adjacent faces with different heights. Such an opening arrangement allows the user to use both arms, for example. This improves workability when installing bolt connections. By arranging the openings at different heights in an oblique pattern, bolt connections are formed on each side. This improves workability during construction, minimizing the amount of welding required at the construction site and reducing the number of bolts. A joint that improves workability of joining and has the same or higher strength at the joint as the other parts. In addition, all of the openings on each side of the steel pipe column are at the same height. By not placing the joint, it is possible to prevent a decrease in strength of the joint portion.

[0153] In this embodiment, as in the first embodiment, the thickness of the steel pipe column is changed in the middle of the first floor. It is possible to make the diameter of the column base side (first steel pipe column 102) thicker and the diameter of the column head side (second steel The diameter of the pipe column 112 can be made thinner, making it suitable for column heads with small bending moments. can be created.

[0154] [Ninth embodiment] This embodiment shows a different configuration of the diaphragm from the first embodiment. The following description will focus on the differences from the first embodiment.

[0155] As shown in FIG. 30, the first diaphragm 104 may have a through-hole 126. Although not shown, the second diaphragm 114 may have a through hole. FIG. 30 shows an embodiment in which a through-hole 126 is provided in the approximate center of the first diaphragm 104. The number of through-holes 126 is not limited, and a plurality of through-holes 126 may be provided in the first diaphragm 104. By providing the through-holes 126 in the first diaphragm 104, the weight of the joint can be reduced. This allows the weight of the column to be reduced. Similarly, through holes may be provided in the insulating film.

[0156] In addition, the column 202 shown in this embodiment is a concrete-filled steel pipe structure (Concrete It can be applied to Filled Steel Tube (also called CFT). The first diaphragm 104 and the second diaphragm 114 are connected via through holes. The inside of the first steel pipe column 102 and the second steel pipe column 112 that are joined together is filled with concrete. As a result, even if the cross-sectional areas of the first steel pipe pole 102 and the second steel pipe pole 112 are reduced, they remain strong. Such a structure can be formed.

[0157] The configuration according to this embodiment can be implemented in appropriate combination with the second to eighth embodiments. can.

[0158] [Note] The entire or part of the exemplary embodiments disclosed above are described as follows: The present invention may include, but is not limited to, the following embodiments.

[0159] [Appendix 1] A first diaphragm provided at one end of a first steel pipe column, and a material axis direction of the first steel pipe column a first L-shaped flange joined to the first diaphragm, the flange surface of which is arranged parallel to the a second L-shaped flange, a second diaphragm provided at one end of the second steel pipe column, The flange surface is arranged parallel to the material axis direction of the second steel pipe column, and the second diaphragm The third L-shaped flange and the fourth L-shaped flange joined together, the first splice plate and the second splice plate a plate, and the first diaphragm and the second diaphragm are disposed opposite each other. The second steel pipe pole is disposed on the first steel pipe pole, and the first steel pipe pole is The first L-shaped flange and the second L-shaped flange are spaced apart from each other. The third L-shaped flange and the fourth L-shaped flange are spaced apart from each other, and the first The L-shaped flange and the third L-shaped flange are arranged so that their flange surfaces are flush with each other, The second L-shaped flange and the fourth L-shaped flange are flush with each other. The first L-shaped flange and the third L-shaped flange are arranged such that the first splice plate is The second L-shaped flange and the fourth L-shaped flange are connected to each other by bolts. A joint structure of a steel pipe column characterized by being bolted together via a splice plate (2).

[0160] [Appendix 2] The first L-shaped flange and the third L-shaped flange, and the second L-shaped flange and the fourth L-shaped flange, the first diaphragm, and the second diaphragm; A joint structure for a steel pipe column as described in Appendix 1 having an enclosed opening.

[0161] [Appendix 3] The first steel pipe pole and the second steel pipe pole are square steel pipe poles, and the first L-shaped flange and the second L-shaped flange is provided corresponding to a corner of the first steel pipe column, and the third The L-shaped flange and the fourth L-shaped flange are provided corresponding to the corners of the second steel pipe column. The joint structure of a steel pipe pole described in Appendix 1 or 2.

[0162] [Appendix 4] a third splice plate facing the first splice plate; and a fourth splice plate facing the second splice plate. a plate, and the first L-shaped flange and the third L-shaped flange are connected to the first flange. and the third splice plate and bolted together, and the second L-shaped flange and the fourth The L-shaped flange is sandwiched between the second splice plate and the fourth splice plate and bolted together. 4. A joint structure for a steel pipe pole according to any one of appendixes 1 to 3.

[0163] [Appendix 5] A first diaphragm provided at one end of a first steel pipe column, and a material axis direction of the first steel pipe column a first L-shaped flange joined to the first diaphragm, the flange surface of which is arranged parallel to the a second L-shaped flange, a second diaphragm provided at one end of the second steel pipe column, The flange surface is arranged parallel to the material axis direction of the second steel pipe column, and the second diaphragm a third flange joined to the surface, a first splice plate and a second splice plate, and the second diaphragm are placed on the first steel pipe column so that the first diaphragm faces the second diaphragm. The second steel pipe pole is arranged, the first steel pipe pole is thicker than the second steel pipe pole, and the first The L-shaped flange and the second L-shaped flange are disposed apart from each other, and the first L-shaped flange The flange surfaces of the second L-shaped flange and the third flange are flush with each other. The first L-shaped flange and the third flange are disposed on the first support plate. The second L-shaped flange and the third flange are joined by bolts. A steel pipe column joint structure characterized by being bolted together via a support plate.

[0164] [Appendix 6] the first L-shaped flange, the second L-shaped flange, the third flange, and A steel pipe column joint structure as described in Appendix 5, having a first diaphragm and an opening surrounded by

[0165] [Appendix 7] The first steel pipe pole and the second steel pipe pole are square steel pipe poles, and the first L-shaped flange and the second L-shaped flange is provided corresponding to a corner of the first steel pipe column, and the third The flange is provided corresponding to one surface of the second steel pipe pole. The joint structure of the steel pipe column shown above.

[0166] [Appendix 8] a third splice plate facing the first splice plate; and a fourth splice plate facing the second splice plate. a plate, and the first L-shaped flange and the third flange are connected to the first splice plate and The second L-shaped flange and the third flange are sandwiched between the first flange and the third flange and bolted together. The flange is sandwiched between the second splice plate and the fourth splice plate and bolted together. 8. A joint structure for a steel pipe pole according to any one of claims 5 to 7.

[0167] [Appendix 9] A first diaphragm provided at one end of a first steel pipe column, and a material axis direction of the first steel pipe column The flange surface is arranged parallel to the first diaphragm, and both ends are in the same direction. A first groove flange and a second groove flange bent into a groove shape at one end of a second steel pipe column. The flange surface is arranged parallel to the material axis direction of the second steel pipe column. a third groove, which is positioned on the second diaphragm and is joined to the second diaphragm, and which has both ends bent in the same direction in a groove shape; a grooved flange and a fourth grooved flange, a first splice plate and a second splice plate, The first steel pipe column is provided with a first diaphragm and a second diaphragm facing each other. The second steel pipe pole is placed on top of the first steel pipe pole, the first steel pipe pole is thicker than the second steel pipe pole, The first grooved flange and the second grooved flange are arranged so that their bent ends are spaced apart and face each other. The third groove flange and the fourth groove flange are bent at their ends spaced apart from each other. The first grooved flange and the second grooved flange are disposed opposite each other, and the direction in which the first grooved flange and the second grooved flange face each other is The third groove flange and the fourth groove flange are different, and the first groove flange The flange surfaces of the second groove flange and the third groove flange are flush with each other. the grooved flange and the fourth grooved flange are arranged so that their flange surfaces are flush with each other; The first groove flange and the third groove flange are bolted together via the first splice plate. The second groove flange and the fourth groove flange are joined to each other by the second splice plate. A joint structure for a steel pipe column, characterized in that the joint is bolted via a

[0168] [Appendix 10] The first groove flange, the second groove flange, the third groove flange, and the front a first opening surrounded by the first diaphragm, the third groove flange, the fourth a second groove flange, the first groove flange, and the second diaphragm. A joint structure for a steel pipe column having an opening as described in Appendix 9.

[0169] [Appendix 11] The steel according to claim 10, wherein the first opening and the second opening are arranged in an oblique shape. Pipe column joint structure.

[0170] [Appendix 12] a third splice plate facing the first splice plate; and a fourth splice plate facing the second splice plate. a plate, and the first groove flange and the third groove flange are connected to the first flange. and the third splice plate, and the second groove flange and the third splice plate are sandwiched and bolted together. The grooved flange is sandwiched between the second splice plate and the fourth splice plate and bolted together. Attachment 9 to 11, wherein the joint structure of the steel pipe pole is

[0171] [Appendix 13] The first steel pipe column and the second steel pipe column are square steel pipe columns, and the first channel flange and the second groove flange, the bent end of which corresponds to the corner of the first steel pipe column. The third groove flange and the fourth groove flange are provided at the bent end. Any one of Supplementary Notes 9 to 12, wherein the portion is provided corresponding to the corner portion of the second steel pipe column. The joint structure of the steel pipe column described above. [Explanation of symbols]

[0172] 100....bolt joint, 101....bolt joint, 102...first steel pipe column, 1 04... First diaphragm, 106... First flange, 107... First L-shape Flange, 108... Second flange, 109... Second L-shaped flange, 110... Gap, 111, gap, 112, second steel pipe column, 114, second diaphragm 116···Third flange, 117···Third L-shaped flange, 118···Fourth flange, 119...fourth L-shaped flange, 120...opening, 122...bolt through hole, 124, through hole, 126, through hole, 130, first splice plate, 132, Second splice 140 Third splice 142 Fourth splice 144 Fifth splice, 146, sixth splice, 148, spacer, 150, bolt nut, 152 nut, 160 first reinforcing plate, 162 second reinforcing plate, 16 4... notch portion, 166... ​​rib, 170... first groove flange, 172... Second groove flange, 180.... Third groove flange, 182.... Fourth groove flange 200 Foundation beam, 202 Column, 204 Beam

Claims

1. A first diaphragm provided at one end of the first square steel pipe column; A pair of flanges, each flange having a flange surface arranged substantially parallel to the material axis direction of the first square steel pipe column and joined to the first diaphragm; a second diaphragm provided at one end of the second square steel pipe column; A pair of flanges, each flange having a flange surface arranged substantially parallel to the material axis direction of the second square steel pipe column and joined to the second diaphragm; a first splice and a second splice, A pair of flanges joined to the first diaphragm are arranged to face each other at a distance from each other across the central axis of the first square steel pipe column, A pair of flanges joined to the second diaphragm are arranged to face each other at a distance from each other across the central axis of the second square steel pipe column, The column diameter of the first square steel pipe column is larger than the column diameter of the second square steel pipe column, The second square steel pipe column is arranged on the first square steel pipe column so that the flange surfaces of the pair of flanges joined to the first diaphragm and the flange surfaces of the pair of flanges joined to the second diaphragm are flush with each other, and the positions of the first corners of the first square steel pipe column and the first corners of the second square steel pipe column coincide in the material axis direction, A joint structure for a square steel pipe column, characterized in that one of a pair of flanges joined to the first diaphragm and one of a pair of flanges joined to the second diaphragm are bolted together via the first support plate, and the other of the pair of flanges joined to the first diaphragm and the other of the pair of flanges joined to the second diaphragm are bolted together via the second support plate.

2. A first diaphragm provided at one end of the first square steel pipe column; A pair of flanges, each flange having a flange surface arranged substantially parallel to the material axis direction of the first square steel pipe column and joined to the first diaphragm; a second diaphragm provided at one end of the second square steel pipe column; A pair of flanges, each flange having a flange surface arranged substantially parallel to the material axis direction of the second square steel pipe column and joined to the second diaphragm; a first splice and a second splice, A pair of flanges joined to the first diaphragm are arranged to face each other at a distance from each other across the central axis of the first square steel pipe column, A pair of flanges joined to the second diaphragm are arranged to face each other at a distance from each other across the central axis of the second square steel pipe column, The column diameter of the first square steel pipe column is larger than the column diameter of the second square steel pipe column, The second square steel pipe column is placed on the first square steel pipe column so that the flange surfaces of the pair of flanges joined to the first diaphragm and the flange surfaces of the pair of flanges joined to the second diaphragm are flush with each other, and one side of the first square steel pipe column and one side of the second square steel pipe column coincide with each other in the material axis direction, A joint structure for a square steel pipe column, characterized in that one of a pair of flanges joined to the first diaphragm and one of a pair of flanges joined to the second diaphragm are bolted together via the first support plate, and the other of the pair of flanges joined to the first diaphragm and the other of the pair of flanges joined to the second diaphragm are bolted together via the second support plate.

3. A first diaphragm provided at one end of the first square steel pipe column; A first flange and a second flange, whose flange surfaces are arranged substantially parallel to the material axis direction of the first square steel pipe column and joined to the first diaphragm; a second diaphragm provided at one end of the second square steel pipe column; A third flange and a fourth flange, whose flange surfaces are arranged substantially parallel to the material axis direction of the second square steel pipe column and joined to the second diaphragm; a first splice and a second splice, The column diameter of the first square steel pipe column is larger than the column diameter of the second square steel pipe column, the second square steel pipe column is placed on the first square steel pipe column so that the first diaphragm and the second diaphragm face each other, the flange surface of the first flange and the flange surface of the fourth flange are flush with each other, the flange surface of the second flange and the flange surface of the third flange are flush with each other, and the positions of the first corner of the first square steel pipe column and the first corner of the second square steel pipe column coincide in the material axis direction; the first flange is longer than the fourth flange in the material axis direction, and the third flange is longer than the second flange in the material axis direction; A joint structure for a square steel pipe column, characterized in that the first flange and the fourth flange are bolted together via the first support plate, and the second flange and the third flange are bolted together via the second support plate.

4. A first diaphragm provided at one end of the first square steel pipe column; A first flange and a second flange, whose flange surfaces are arranged substantially parallel to the material axis direction of the first square steel pipe column and joined to the first diaphragm; a second diaphragm provided at one end of the second square steel pipe column; A third flange and a fourth flange, whose flange surfaces are arranged substantially parallel to the material axis direction of the second square steel pipe column and joined to the second diaphragm; a first splice and a second splice, The column diameter of the first square steel pipe column is larger than the column diameter of the second square steel pipe column, the second square steel pipe column is placed on the first square steel pipe column so that the first diaphragm and the second diaphragm face each other, a flange surface of the first flange and a flange surface of the fourth flange are flush with each other, a flange surface of the second flange and a flange surface of the third flange are flush with each other, and one side of the first square steel pipe column and one side of the second square steel pipe column coincide with each other in the material axis direction; the first flange is longer than the fourth flange in the material axis direction, and the third flange is longer than the second flange in the material axis direction; A joint structure for a square steel pipe column, characterized in that the first flange and the fourth flange are bolted together via the first support plate, and the second flange and the third flange are bolted together via the second support plate.

5. 5. The joint structure for a square steel pipe column according to claim 3, wherein the first splice plate is located higher than the second splice plate in the material axis direction.

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