Joint structure of rectangular steel pipe columns

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

Background Art

[0002] At a building construction site, welding and bolt joining are used as methods for joining steel members. Welding can, in principle, ensure sufficient strength, but it requires a high level of skill and working time, and the joining strength is affected by the skill of the worker. In contrast, bolt joining has the advantages of shortening the construction period, being less affected by the skill of the worker, and being easy to perform quality control. There are various bolt joining methods, for example, methods for joining a steel pipe column and an H-shaped steel, and methods for joining steel pipe columns to each other are disclosed (see Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] If you want to change the diameter of the steel pipe column at the base and top of the column, you can make the change at the same height as the beam. However, in such a structure, the column heads become unnecessarily thick, and due to earthquakes, etc., the horizontal When a force is applied in a direction, the bending stress generated at the top and base of the column may differ. Often, the necessary thickness is kept constant from the side to the capital, resulting in a column that is unnecessarily thick at the capital. This results in an irrational situation.

[0006] Therefore, the present invention changes the diameter of the column base and column top at a reasonable point in the steel pipe column, while maintaining strength One of the objectives is to provide a joint structure that does not reduce performance. [Means for solving the problem]

[0007] A joint structure for a steel pipe column according to one embodiment of the present invention is provided at one end of the first steel pipe column The diaphragm and the flange surface are positioned approximately parallel to the material axis direction of the first steel pipe column, and the first diaphragm A first flange and a second flange joined to the ear flaps, and a second steel pipe column attached to one end of the second steel pipe column. The second diaphragm is positioned, and the flange surface is arranged approximately parallel to the material axis direction of the second steel pipe column. The third flange and fourth flange are joined to the second diaphragm, and the first accessory It includes a plate and a second support plate. The first diaphragm and the second diaphragm face each other. As shown, the second steel pipe column is positioned on top of the first steel pipe column, and the first steel pipe column is positioned above the second steel pipe column. Thick, and the flange surfaces of the first and third flanges are oriented in the first direction. The flange surfaces of the second flange and the fourth flange intersect the first direction in the second direction. It is directed such that one side of the first flange and one side of the second flange are adjacent to each other and separated by a certain distance. They are positioned such that one side of the third flange and one side of the fourth flange are adjacent to each other and spaced apart. The flanges are positioned such that the flange surface of the first flange and the flange surface of the third flange are flush with each other. , bolted together via the first splice plate, the flange surface of the second flange and the fourth flange The flange surface is positioned flush with the other surface and is bolted together via a second splice plate.

[0008] A joint structure for a steel pipe column according to one embodiment of the present invention is provided at one end of the first steel pipe column The diaphragm and the flange surface are positioned approximately parallel to the material axis direction of the first steel pipe column, and the first diaphragm A first flange having bolt holes and a first through hole joined to an ear phram, and bolt holes A second flange having a through hole and a second die provided at one end of the second steel pipe column The aphram and the flange surface are positioned approximately parallel to the material axis direction of the second steel pipe column, and the second diaphragm A third flange having bolt holes and a second through hole joined to the ram, and having bolt holes It includes a fourth flange without through holes, a first splice plate, and a second splice plate. The second steel pipe is placed on top of the first steel pipe column so that the diaphragm and the second diaphragm face each other. The columns are arranged, with the first steel pipe column being thicker than the second steel pipe column, and the first flange and the third flange Each flange surface of the flange is oriented in the first direction, and the second flange and the fourth flange The flange surface is oriented in a second direction intersecting the first direction, and the first flange and the second flange The lunge is adjacent to the third flange and the fourth flange are positioned adjacent to each other, and the first flange The flange surface of the flange of the flange and the flange surface of the fourth flange are arranged flush, and they are bolted together through the first packing plate. The flange surface of the second flange and the flange surface of the third flange are arranged flush, and they are bolted together through the second packing plate. The joint structure of the steel pipe column according to an embodiment of the present invention includes a first diaphragm provided at one end of the first steel pipe column, a first L-shaped flange and a second L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the first steel pipe column and are joined to the first diaphragm, a second diaphragm provided at one end of the second steel pipe column, a third L-shaped flange and a fourth L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the second steel pipe column and are joined to the second diaphragm, a first packing plate and a second packing plate. The second steel pipe column is arranged on the first steel pipe column so that the first diaphragm and the second diaphragm face each other. The first steel pipe column is thicker than the second steel pipe column. The first L-shaped flange and the second L-shaped flange are arranged at a distance from each other, and the third L-shaped flange and the fourth L-shaped flange are arranged at a distance from each other. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate.

[0009] The joint structure of the steel pipe column according to an embodiment of the present invention includes a first diaphragm provided at one end of the first steel pipe column, a first L-shaped flange and a second L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the first steel pipe column and are joined to the first diaphragm, a second diaphragm provided at one end of the second steel pipe column, a third L-shaped flange and a fourth L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the second steel pipe column and are joined to the second diaphragm, a first packing plate and a second packing plate. The first diaphragm and the second diaphragm face each other, and the second steel pipe column is arranged on the first steel pipe column. The first steel pipe column is thicker than the second steel pipe column. The first L-shaped flange and the second L-shaped flange are arranged at a distance from each other, and the third L-shaped flange and the fourth L-shaped flange are arranged at a distance from each other. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. The joint structure of the steel pipe column according to an embodiment of the present invention includes a first diaphragm provided at one end of the first steel pipe column, a first L-shaped flange and a second L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the first steel pipe column and are joined to the first diaphragm, a second diaphragm provided at one end of the second steel pipe column, a third L-shaped flange and a fourth L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the second steel pipe column and are joined to the second diaphragm, a first packing plate and a second packing plate. The first diaphragm and the second diaphragm face each other, and the second steel pipe column is arranged on the first steel pipe column. The first steel pipe column is thicker than the second steel pipe column. The first L-shaped flange and the second L-shaped flange are arranged at a distance from each other, and the third L-shaped flange and the fourth L-shaped flange are arranged at a distance from each other. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. The joint structure of the steel pipe column according to an embodiment of the present invention includes a first diaphragm provided at one end of the first steel pipe column, a first L-shaped flange and a second L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the first steel pipe column and are joined to the first diaphragm, a second diaphragm provided at one end of the second steel pipe column, a third L-shaped flange and a fourth L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the second steel pipe column and are joined to the second diaphragm, a first packing plate and a second packing plate. The first diaphragm and the second diaphragm face each other, and the second steel pipe column is arranged on the first steel pipe column. The first steel pipe column is thicker than the second steel pipe column. The first L-shaped flange and the second L-shaped flange are arranged at a distance from each other, and the third L-shaped flange and the fourth L-shaped flange are arranged at a distance from each other. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. The second steel pipe column is arranged on the first steel pipe column so that the first diaphragm and the second diaphragm face each other. The first steel pipe column is thicker than the second steel pipe column. The first L-shaped flange and the second L-shaped flange are arranged at a distance from each other, and the third L-shaped flange and the fourth L-shaped flange are arranged at a distance from each other. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. The first L-shaped flange and the second L-shaped flange are arranged at a distance from each other, and the third L-shaped flange and the fourth L-shaped flange are arranged at a distance from each other. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. The first L-shaped flange and the second L-shaped flange are arranged at a distance from each other, and the third L-shaped flange and the fourth L-shaped flange are arranged at a distance from each other. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate.

[0010] The joint structure of the steel pipe column according to an embodiment of the present invention includes a first diaphragm provided at one end of the first steel pipe column, a first L-shaped flange and a second L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the first steel pipe column and are joined to the first diaphragm, a second diaphragm provided at one end of the second steel pipe column, a third L-shaped flange and a fourth L-shaped flange whose flange surfaces are arranged parallel to the material axis direction of the second steel pipe column and are joined to the second diaphragm, a first packing plate and a second packing plate. The first diaphragm and the second diaphragm face each other, and the second steel pipe column is arranged on the first steel pipe column. The first steel pipe column is thicker than the second steel pipe column. The first L-shaped flange and the second L-shaped flange are arranged at a distance from each other, and the third L-shaped flange and the fourth L-shaped flange are arranged at a distance from each other. The flange surfaces of the first L-shaped flange and the third L-shaped flange are arranged flush with each other, and the flange surfaces of the second L-shaped flange and the fourth L-shaped flange are arranged flush with each other. The first L-shaped flange and the third L-shaped flange are bolted together through the first packing plate, and the second L-shaped flange and the fourth L-shaped flange are bolted together through the second packing plate. 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 grooved flange, a second diaphragm provided at one end of the second steel pipe column, and the second steel pipe column The flange surface is positioned parallel to the material axis and is joined to the second diaphragm, with both ends being the same A third grooved flange and a fourth grooved flange that are bent in a groove shape in the direction, and a first reinforcing plate and Including a second splice plate, the first diaphragm and the second diaphragm 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 positioned opposite each other with their bent ends spaced apart. The third groove flange and the fourth groove flange are positioned opposite each other with their bent ends spaced apart. And the direction in which the first groove flange and the second groove flange face each other, and the third groove flange The first and fourth grooved flanges are different, and the first and third grooved flanges are different. Each flange surface is positioned flush with the other, and the second grooved flange and the fourth grooved flange are... Each flange surface is positioned flush with the others, and the first grooved flange and the third grooved flange are, The second grooved flange and the fourth grooved flange are bolted together via the first splice plate. It is bolted together via a second splice plate.

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

[0012] According to one embodiment of the present invention, steel pipe columns of different diameters can be connected in the middle of a floor. This allows for a thicker, stronger structure at the base of the column and a thinner structure at the top, resulting in reduced weight, reduced material consumption, and space savings. This allows for the creation of a structure suitable for column heads with small bending moments, while also enabling the creation of a more flexible structure. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 2] Figure 1 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 3] The diagram shows a schematic plan view of a steel pipe column according to one embodiment of the present invention, where (A) and (B) show the structure of the second steel pipe column as seen from the column head side. [Figure 4] This diagram shows a schematic of the 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] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 6] Figure 5 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 7] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 8] Figure 7 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 9] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 10] This 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]Figure 10 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 12] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 13] This 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] Figure 13 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 15] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 16] Figure 15 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 17] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 18] This 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] Figure 18 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 20] This shows an unfolded view of a joint structure for a steel pipe column according to one embodiment of the present invention. [Figure 21] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 22]Figure 21 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 23] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 24] This 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] Figure 24 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 26] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 27] The joint structure of a steel pipe column according to one embodiment of the present invention is shown, where (A) is a perspective view of the L-shaped flange portion and (B) is a plan view of the L-shaped flange portion. [Figure 28] This is a perspective view of a joint structure for steel pipe columns according to one embodiment of the present invention, where (A) shows an unfolded view and (B) shows a bolted joint in the joint structure of two steel pipe columns. [Figure 29] Figure 28 shows the cross-sectional structure of the bolted joint in the joint structure of the steel pipe column, where (A) shows the cross-sectional structure of the first steel pipe column and (B) shows the cross-sectional structure of the second steel pipe column. [Figure 30] This shows the cross-sectional structure of a bolted joint in a joint structure of a steel pipe column according to one embodiment of the present invention. [Modes for carrying out the invention]

[0014] The embodiments of the present invention will be described below with reference to the drawings, etc. However, the present invention is multifaceted. This includes many different embodiments and is not meant to be interpreted as being limited to the embodiments exemplified below. No. The drawings are intended to make the explanation clearer, and therefore the width, thickness, shape, etc. of each part may differ from the actual appearance. While it may be represented schematically in some cases, this is merely an example and does not limit the scope of the present invention. This does not define it. Furthermore, in this specification, certain elements shown in certain drawings and other elements When an element shown in a drawing is identical or corresponds to another element, the same symbol (or code) is used. The numbers listed as item numbers are followed by symbols such as a, b, etc., and repeated explanations are provided as appropriate. It may be omitted. Furthermore, the characters "1st", "2nd", etc. attached to each element are each These are convenient labels used to distinguish elements, and unless otherwise specified, they do not imply anything further. It has no meaning.

[0015] The following description illustrates the case where the steel pipe column is a square steel pipe column, but the present invention is not limited thereto. It can be appropriately applied to round steel pipe columns, irregularly shaped steel pipe columns, etc.

[0016] [First Embodiment] A joint structure for a steel pipe column according to one embodiment of the present invention is shown with reference to Figures 1(A) and 1(B). Let me explain. Figure 1(A) shows an unfolded view of the joint of a steel pipe column, and Figure 1(B) shows the joint of a square steel pipe column. A perspective view of the joint is shown. Note that in Figure 1(A), fasteners such as bolts and nuts are omitted. It is.

[0017] Figures 1(A) and 1(B) show the first steel pipe column 102 and the second steel pipe column 112 and their joints. The structure of the part is shown. As shown in Figures 1(A) and 1(B), there are four first steel pipe columns 102. It has the following faces, and for convenience, each face is called the first face 11, the second face 12, the third face 13, and the fourth face in a clockwise direction. It is indicated with the symbol 14, and similarly for the second steel pipe column 112, each face is shown clockwise as the first face 21, The two faces are denoted as 22, 23, and 24, respectively. Unless otherwise specified, When the steel pipe column is erected, the first steel pipe column 102 is positioned on the lower side in the direction of its material axis. The second steel pipe column 112 shall be positioned on the upper side.

[0018] In this embodiment, the first steel pipe column 102 and the second steel pipe column 112 are defined as having a column diameter (thickness of the column) ) are different. The first steel pipe column 102 is located on the lower side, while the second is located on the upper side. The steel pipe column 112 used has a small diameter. The joint structure of the steel pipe column according to this embodiment is It has a structure in which steel pipe columns of different diameters (thicknesses) are joined together.

[0019] As shown in Figure 1(A), the first diaphragm 104 is provided on the first steel pipe column 102. A second diaphragm 114 is provided on the second steel pipe column 112. 04 is attached by welding to one end of the first steel pipe column 102, and the second diaphragm Ram 114 is attached by welding so as to block one end of the second steel pipe column 112. The diaphragm 104 and the second diaphragm 114 are flat plate-shaped members, and in a plan view The shape is arbitrary. For example, the first diaphragm 104 and the second diaphragm 114 The shape in plan view is a square, as shown in Figure 1(A). Also, although not shown, Even if the first diaphragm 104 and the second diaphragm 114 are circular in plan view good.

[0020] Since the first steel pipe column 102 and the second steel pipe column 112 have different column diameters (thickness), The area of ​​the first diaphragm 104 and the second diaphragm 114 in a plan view is different. It may also be the case that the diaphragm is large enough to close the end face of the steel pipe column. It is sufficient if the second diaphragm 114 is viewed in plan view relative to the first diaphragm 104. The area to be removed may be small. On the other hand, the first diaphragm 104 located on the lower side has rigidity. Furthermore, to increase the load-bearing capacity, it is preferable that the plate thickness is greater than that of the second diaphragm 114.

[0021] On the upper surface of the first diaphragm 104, the first flanges 106a, 106b, and the second Flanges 108a and 108b are provided. First flanges 106a and 106b, and The flanges 108a and 108b are plate-shaped members, and there are multiple bolt holes 12 on the flange surface. 2 is provided. First flanges 106a, 106b, and second flange 108a , 108b is arranged such that each flange surface is 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... It is erected on the surface of diaphragm 104 and joined by welding.

[0022] The first flange 106a is positioned on the first surface 11 side, and the first flange 106b is positioned on the third surface It is positioned on the 13 side. The first flange 106a and the first flange 106b are the first da The inner flange surfaces are spaced apart on the ear phram 104 so that they face each other. Similarly, The second flange 108a is positioned on the second surface 12 side, and the second flange 108b is positioned on the fourth surface 1 It is positioned on side 4, and spaced apart so that the inner flange surfaces face each other on the first diaphragm 104. They are arranged in this manner. Thus, the first flanges 106a, 106b and the second flange 1 08a and 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 that they do not come into contact with each other. In other words, the first flange 106a and the second flange 108a are adjacent to each other on one side. They are arranged at a distance from each other, and the distanced area is located at a position corresponding to the corner of the first steel pipe column 102. The adjacent flanges have this positional relationship, therefore the first diaphragm Areas corresponding to and separated from each corner of the first steel pipe column 102 are provided on the M104. .

[0024] Although not shown in detail in this embodiment, the first diaphragm 104 is provided with The number of lunges can be selected as needed. For example, three flanges can be arranged to form three surfaces. They may be arranged in a manner that forms six surfaces with six flanges. Even in the case of misalignment, the flanges are positioned so that adjacent flanges do not come into contact with each other. It is sufficient if the arrangement is such that no unobstructed areas are formed.

[0025] The second diaphragm 114 is connected to the third flanges 116a, 116b, and the fourth flange flanges 118a and 118b are provided. Third flanges 116a and 116b, and fourth flanges The lunges 118a and 118b are plate-shaped members, and multiple bolt holes 122 are provided on the flange surface. The third flanges 116a, 116b and the fourth flanges 118a, 11 In 8b, each flange surface is positioned 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 the second It is erected on the surface of ear phram 114 and joined by welding.

[0026] As shown in Figure 1(A), the first flange 106a and the third flange 116a are The flange surfaces are arranged facing the same direction (first direction). Flange 108a and the fourth flange 118a have their respective flange surfaces facing the same direction (the second side). It is positioned facing the (direction). The second direction is the direction that intersects 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 Flange 4 118a is positioned so that its flange surface is flush with the flange. First flange 106b and the third flange 116b, and the second flange 108b and the fourth flange The same arrangement applies to the 118b. With this arrangement, the third flange 11 The outer flange surfaces of 6a, 116b, and the fourth flanges 118a, 118b are the second When positioned so as to be roughly in line with the outer surface of the steel pipe column 112, the first flanges 106a and 106b The second flanges 108a and 108b are positioned inward from the outer surface of the first steel pipe column 102. It will be placed in that way. In other words, the first steel pipe column 102 is thicker than the second steel pipe column 112. Then, when the flange surfaces of the upper and lower flanges are aligned flush, the first flange 106a, 10 6b, and the second flanges 108a, 108b are in the plane of the first diaphragm 104. It will be positioned further inside.

[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 together. Even in such cases, it allows for flexibility in the placement of the flanges. In addition, steel pipe The material and thickness of the flange can be changed relative to the column. For example, the flange material and thickness can be changed relative to the thickness of the steel pipe column. The thickness of the blade can be increased, which can improve the strength of the bolted joint. When the pipe column is formed from steel, the flange material is chromium (Cr) and molybdenum (Mo ), a material with a higher nickel (Ni) content can be used in bolted joints. This allows for increased tensile strength and toughness. Furthermore, by adding a diaphragm... By joining a flange there, buckling of the flange can be suppressed. Also, multiple This allows stress to be distributed across the flanges, preventing stress from concentrating on a specific flange. Yes.

[0029] Figure 1(B) shows the first diaphragm 104 and the second diaphragm 114 facing each other. This shows a configuration in which a second steel pipe column 112 is placed on top of a first steel pipe column 102 and joined together. The first flange 106a and the third flange 116a have a first attachment on the outer flange surface. Plate 130a is in contact with the inner flange surface, and the third reinforcing plate 140a is in contact with the inner flange surface, respectively The first bolted joint 10 is fastened by a bolt and nut inserted through the bolt hole 122. 0a is formed. Similarly, the second flange 108a and the fourth flange 118a are also formed on the outside. The second reinforcing plate 132a is in contact with the flange surface, and the fourth reinforcing plate 14 is in contact with the inner flange surface. 2a is brought into contact with the second bolted joint 100b. Adjacent flanges are spaced apart. As they are arranged in this manner, as shown in Figure 1(B), the first steel pipe column 102 and the second steel pipe column 1 When 12 is joined, a first opening 120a is formed. The first opening 120a is It is formed corresponding to the corners of the first steel pipe column 102 and the second steel pipe column 112. In other words, the first The opening 120a is between the first bolt joint 100a and the second bolt joint 100b It is formed in this way.

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

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

[0032] In this embodiment, the diameter of the second steel pipe column 112 is such that the diameter of the first steel pipe column 102 is equal to the diameter of the second steel pipe column 112. Because they are thin, the first flanges 106a, 106b and the second flanges 108a, 108b The arrangement is as follows: third flanges 116a, 116b and fourth flanges 118a, 118b The arrangement is constrained by the third flanges 116a, 116b, and the fourth flanges. The flanges 118a and 118b are positioned along the side ends of the second diaphragm 114. In contrast, the first flanges 106a, 106b and the second flanges 108a, 108b It is located in the inner region from the end of the first diaphragm 104.

[0033] The first bolted joint 100a consists of a first flange 106a and a third flange, which are positioned above and below each other. The lunge 116a is bolted to the first splice plate 130a and the third splice plate 140a. This is the part that is constructed, and the second bolt joint 100b is the second flange 1 which is positioned above and below. 08a and the fourth flange 118a connect to the second splice plate 132a and the fourth splice plate 142a These are parts that are bolted together via a third bolted joint 100c, which is arranged vertically. The first flange 106b and the third flange 116b are connected to the first splice plate 130b and the third This is a part that is bolted together via a reinforcing plate 140b, and the fourth bolted joint 100d is The second flange 108b and the fourth flange 118b, positioned above and below, form the second splice plate 1 This is the part that is bolted together via 32b and the fourth reinforcing plate 142b.

[0034] As shown in Figures 2(A) and 2(B), the joint structure of the steel pipe column according to this embodiment is Between the first bolted joint 100a and the second bolted joint 100b is the first opening 12 It has 0a, and between the second bolt joint 100b and the third bolt joint 100c there is the second It has an opening 120b, a third bolt joint 100c and a fourth bolt joint 100d Between them is a third opening 120c, and a fourth bolt joint 100d and a first bolt joint There is a fourth opening 120d between part 100a and the other part. These openings are provided by each flange They are formed by being spaced apart and are provided corresponding to each corner of the steel pipe column.

[0035] As shown in Figure 1(B), and Figures 2(A) and 2(B), the first steel pipe column 102 and the When the two steel pipe columns 112 are positioned vertically in the direction of the material axis and joined, the first opening 120a, the second The second opening 120b, the third opening 120c, and the fourth opening 120d are formed. These openings connect the outer space of the rectangular steel pipe column with the inner space enclosed by the flange. This is the part that comes into contact. With this configuration, the worker can connect the first steel pipe column 102 and the second steel pipe At the work site where column 112 is joined, the opening is used as a handhole. This allows tools to be applied from the inside of the flange, making bolt connection work easier. It can be installed.

[0036] The first flanges 106a, 106b and the second flanges 108a, 108b, and The widths of the third flanges 116a and 116b, and the fourth flanges 118a and 118b are, The opening to be formed is set appropriately within a range that allows it to be used as a handhole. This is possible. Also, these flanges can be made thicker than the wall thickness of the steel pipe column, This increases the strength of the bolted joint. In other words, the flange plate thickness can be increased. This allows for the formation of an opening while preventing a decrease in the strength of the bolted joint.

[0037] Figure 2 shows that the first steel pipe column 102 and the second steel pipe column 112 are located inside each steel pipe column. The diagram shows an arrangement where the central axes are aligned, but the present invention is not limited to such arrangements of steel pipe columns. It is not done. For example, as shown in the schematic plan view of Figure 3(A), one of the first steel pipe columns 102 It is also possible to position them so that the position of the corner of the second steel pipe column 112 coincides with the position of one corner of the second steel pipe column 112. It can be done. Also, as shown in the schematic plan view of Figure 3(B), one side of the first steel pipe column 102 and the second It can also be positioned so that it coincides with one side of the steel pipe column 112. According to the embodiment, two steel pipe columns of different diameters are connected by bolt joints, the column base side This allows for varying the thickness of the column at the top and offsetting the column's center.

[0038] The first steel pipe column 102 and the second steel pipe column 112 are made of steel material. Ram 104, second diaphragm 114, first flanges 106a, 106b, second flange Lunges 108a, 108b, third flanges 116a, 116b, fourth flange 118 a, 118b, first support plate 130a, 130b, second support plate 132a, 132b, The third reinforcing plate 140a, 140b and the fourth reinforcing plate 142a, 142b are similarly shaped from steel material. This is achieved. For example, structural rolled steel is used as the steel material. Note that Figure 1(A) is First reinforcing plates 130a, 130b and second reinforcing plates 132a, 132 are positioned on the outside. b, and the third reinforcing plate 140a, 140b and the fourth reinforcing plate 142a, which are positioned on the inside. This indicates 142b, but if the strength of the bolted joint can be sufficiently maintained, it will abut against the inside or outside. The backing plate can also be omitted.

[0039] According to this embodiment, the first steel pipe column 102 and the second steel pipe column 112 are joined by bolts. When joining them together, an opening is formed that can be used as a handhole. By positioning the lunge, work at the construction site can be made easier, and high-quality bolts can be used. A joint can be formed.

[0040] Figure 4 shows a schematic of the column-beam structure of the first floor of the building. Columns 202 stand on foundation beams 200. The base of column 202 is fixed to the foundation beam 200 with anchor bolts, etc., and the top of column 202 is fixed to the foundation beam 200 with anchor bolts, etc. A beam 204 is provided. Figure 4 shows that the column 202 is the first steel pipe column 102 shown in this embodiment. This shows a case where the second steel pipe column 112 is joined by a bolted joint 100.

[0041] Generally, the stress on a column differs significantly between the base and the top of the column. For example, the stress on a column on the first floor differs significantly between the base and the top of the column. Therefore, since the base of the column is joined to a highly rigid foundation beam, the degree of fixation of the end of the material is increased, and the column will not be damaged by earthquakes, etc. When it deforms, the stress is greater at the base of the column than at the top. In other words, when installed on the first floor. Because the column is fixed to a highly rigid foundation at the base, the degree of fixation at the base is greater than at the top. The height increases, and the bending moment increases accordingly.

[0042] In conventional column-beam structures, the columns are constructed with the same thickness at the base as required at the top, and the upper floors It has a structure in which the columns above the beams are replaced with thinner columns. Also, especially in high-rise buildings, it is embedded. A column-supported system may be used. In this case, due to construction considerations (such as fine-tuning the column positions), ), divide the column into a section below the middle of the first floor (section zero) and a section above that (section 1) and bring it to the construction site. The components are transported to the construction site, where the upper and lower columns are joined by welding to form the final assembly (on-site joining). Welding requires that the upper and lower columns (steel pipes) be in the same position, so the columns that are positioned vertically... The positions of the (steel pipes) must also be the same. The diameter of the steel pipes used as columns is based on the base column side. Because it is determined by this, the design becomes excessive on the capital side of the column.

[0043] In contrast, according to the joint structure of the steel pipe column of this embodiment, as shown in Figure 4, the first floor It becomes possible to change the thickness of the column midway through the construction. In other words, bolt connections can be made midway through the first floor. By providing section 100 to connect the first steel pipe column 102 and the second steel pipe column 112, the column base side (first The diameter of the steel pipe column 102 is increased, and the diameter of the column head side (second steel pipe column 112) is decreased. This allows for the creation of a structure suitable for column heads with small bending moments. By placing 100 below the center of the column, work efficiency is improved. Also, the joint 100 is located inside the column. By placing it above the center, it is possible to make the diameter 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 are provided that can be used as handholes. The present invention is shown in part, but is not limited to such embodiments, and does not affect workability. (If a sufficiently large opening can be obtained) fewer than four openings will be provided. This is possible. Changing the number of such openings is related to the arrangement of the flanges joined to the diaphragm. This can be done as appropriate depending on the location.

[0045] [Second Embodiment] This embodiment further includes a reinforcing plate ("U") in the joint structure of the steel pipe column shown in the first embodiment. This shows a structure that can also be described as "Eb". In the following explanation, the first implementation form I will explain the differences, focusing on the aspects that differ from the original.

[0046] Figure 5(A) shows an unfolded view of the joint of a rectangular steel pipe column according to this embodiment, and Figure 5(B) shows a rectangular A perspective view of the joint of the steel pipe column is shown. As shown in Figure 5(A), the first steel pipe column 102 is on the same side as the second A reinforcing plate 160 is provided, and a second reinforcing plate 162 is provided on the side of the second steel pipe column 112. The first reinforcing plate 160 is connected to the first flanges 106a, 106b, and the second flange 1 Located in the inner region enclosed by 08a and 108b, the second reinforcing plate 162 is positioned in the third flat The inner region enclosed by flanges 116a, 116b and the fourth flanges 118a, 118b It will be placed there.

[0047] The first reinforcing plate 160 is positioned perpendicular to the first diaphragm 104, and the first On the inner flange surfaces of flanges 106a, 106b and the second flanges 108a, 108b The second reinforcing plate 162 is positioned perpendicular to the second diaphragm 114. The third flanges 116a, 116b and the fourth flanges 118a, 118b are positioned as follows: It is provided in contact with the inner flange surface. The first reinforcing plate 160 and the second reinforcing plate 162 have a thickness The dimensions may be different. That is, the lower side may be different from the second reinforcing plate 162 which is positioned on the upper side. The first reinforcing plate 160, which is positioned there, may be thick.

[0048] First splice plates 130a, 130b and second splice plates 130a, 130b are attached to the outside of the flange to form a bolted joint. The reinforcing plates 132a and 132b are positioned on the inside, with the third reinforcing plates 140a and 140b, and the fourth reinforcing plate 140a and 140b on the inside. The reinforcing plates 142a and 142b are positioned. The reinforcing plates are positioned on the inside or as in the first embodiment. One of the outer plates can also be omitted. The first reinforcing plate 160 and the second reinforcing plate 162 are bolts. The third splice plates 140a, 140b, and The fourth reinforcing plates 142a and 142b are connected to the first reinforcing plate 160 and the second reinforcing plate 162. It has a structure that is divided into two parts, left and right, to prevent interference.

[0049] As shown in Figure 5(B), the first steel pipe column 102 and the second steel pipe column 112 are joined together. In this configuration, a first opening 120a is formed, and a first reinforcing plate 160 and a second reinforcing plate 162 It has a structure that is hidden inside the bolted joint and not exposed to the outside.

[0050] Figure 6(A) shows the structure of the area indicated by arrows A3 and A4 in cross-section in Figure 5(B). And as shown in Figure 6(B). Figure 6(A) shows the cross-sectional structure of the joint on the first steel pipe column 102 side. Figure 6(B) shows the cross-sectional structure of the joint on the second steel pipe column 112 side.

[0051] Similar to the first embodiment, bolt joints 100 (first bolt joint 1) are provided on each surface of the steel pipe column. 00a, second bolt joint 100b, third bolt joint 100c, fourth bolt joint Part 100d) is formed. The first reinforcing plate 160 has first flanges 106a, 106b , contacts approximately the center of the inner flange surface of the second flange 108a, 108b, and the second auxiliary The reinforced plate 162 has third flanges 116a, 116c and fourth flanges 118a, 118b It is provided so as to abut against the approximate center. The first reinforcing plate 160 and the second reinforcing plate 162 are Because it has a cross shape in plan view, the first opening 120a and the second opening 120b It can be positioned so as not to block the third opening 120c and the fourth opening 120d. Therefore, even if the first reinforcing plate 160 and the second reinforcing plate 162 are provided, The opening can be used as a handhole, allowing bolt connection work to be performed at the construction site. ru.

[0052] In this embodiment, a cross-shaped reinforcing plate is shown in plan view, but the present invention is not limited thereto. An I-shaped reinforcing plate may be used. That is, it contacts only the two opposing flanges. Reinforcement plates may be provided.

[0053] In this way, the first reinforcing plate 160 and the second reinforcing plate 162 are provided, The mechanical strength of the joint 100 can be increased. For example, when acting on the bolted joint 100 This can increase resistance to shear force. The joint structure of the steel pipe column according to this embodiment is Apart from the presence of the first reinforcing plate 160 and the second reinforcing plate 162, the structure according to the first embodiment is as described above. It is similar to the original form and can produce similar effects.

[0054] In the joint structure of the steel pipe column shown in Figures 5(A) and 5(B), reinforcing plates are arranged above and below. The members may be bolted together. Figure 7(A) shows the joint of the square steel pipe column according to this embodiment. The diagram is shown, and Figure 7(B) shows a perspective view of the joint of the square steel pipe column. As shown in Figure 7(A) , a fifth reinforcing plate 144a, so as to be in contact with the first reinforcing plate 160 and the second reinforcing plate 162, A reinforcing plate 146a is provided for the 6th bolt joint 101a and the 6th bolt joint shown in Figure 7(B). The bolted joint 101b is formed in a position visible from the first opening 120a.

[0055] Figure 8(A) shows the structure of the area indicated by arrows A5 and A6 in cross-section, as seen in Figure 7(B). And as shown in Figure 8(B). Figure 8(A) shows the cross-sectional structure of the joint on the first steel pipe column 102 side. Figure 8(B) shows the cross-sectional structure of the joint on the second steel pipe column 112 side. Figures 8(A) and 8(B) As shown in the diagram, the bolted joint 10 joins the first reinforcing plate 160 and the second reinforcing plate 162. 1 (Fifth bolt joint 101a, sixth bolt joint 101b, seventh bolt joint 1 01c, an eighth bolted joint 101d) is provided. The fifth bolted joint 101a is, The first reinforcing plate 160 and the second reinforcing plate 162 are the fifth splice plate 144a and the sixth splice plate 1 It has a structure sandwiched between 46a. Similarly, the sixth bolted joint 101b is connected to the fifth splice plate 1 It is formed using 44b and the sixth reinforcing plate 146b, and the seventh bolted joint 101c is the fifth The eighth bolted joint 10 is formed using the reinforcing plate 144c and the sixth reinforcing plate 146c. 1d is formed using a fifth reinforcing plate 144d and a sixth reinforcing plate 146d.

[0056] The fifth bolted joint 101a is sandwiched between the first opening 120a and the second opening 120d. It is necessary to use both of these openings at the construction site to perform bolt connection work. This can be done. Other bolted joints that bolt together the first reinforcing plate 160 and the second reinforcing plate 162. Similarly, since it is positioned between the two openings, bolt connection work at the construction site is It can be done easily.

[0057] In this way, the first reinforcing plate 160 and the second reinforcing plate 162 are bolted together, The strength of the joint connecting the first steel pipe column 102 and the second steel pipe column 112 can be increased. The bolted joint 101 of the first reinforcing plate 160 and the second reinforcing plate 162 is surrounded by the flange. It is formed in the inner area, but is surrounded by the opening 120, so the construction site The bolt tightening work can be performed very easily.

[0058] In this embodiment as well, similar to the first embodiment, the diameter of the steel pipe columns is changed midway through the first floor. This becomes possible. In other words, a bolted joint 100 is provided in the middle of the first floor section, and the first steel By connecting the pipe column 102 and the second steel pipe column 112, the diameter of the column on the base side (first steel pipe column 102) is By making it thicker, the diameter of the column at the top (second steel pipe column 112) can be made thinner, and the bending moment It is possible to create a structure suitable for small column capitals.

[0059] [Third Embodiment] A joint structure for a steel pipe column according to one embodiment of the present invention is shown with reference to Figures 9(A) and 9(B). Let me explain. Figure 9(A) shows an unfolded view of the joint of a steel pipe column, and Figure 9(B) shows the joint of a square steel pipe column. A perspective view of the joint is shown. Note that in Figure 9(A), fasteners such as bolts and nuts are omitted. It is.

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

[0061] Similar to the first embodiment, in this embodiment as well, the column diameter (thickness) of the first steel pipe column 102 The first da The thickness of earphram 104 is greater than the thickness of the second diaphragm 114. .

[0062] The first diaphragm 104 has first flanges 106a, 106b and a second flange 108a and 108b are joined together. 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 opposite each other at a predetermined interval. The second flanges 108a and 108b are provided so that the flange surface of the first steel pipe The first flanges 106a and 106b are positioned parallel to the axis direction of the column 102 and face each other. They are oriented in a direction intersecting the direction and are installed facing each other at predetermined intervals. Figure 9(A ) The first flange 106a is on the 11th surface of the first steel pipe column 102, and the first flange 10 6b is on the 13th surface, the second flange 108a is on the 12th surface, and the second flange 108b is on the The diagram shows the arrangement corresponding to 14 surfaces. As shown in the diagram, each flange is adjacent to the end The parts are arranged so that they are in contact. With this flange arrangement, the first diaphragm 1 On 04 are the first flanges 106a, 106b and the second flanges 108a, 108 A region enclosed by b is formed.

[0063] The first flange 106a is flat and has a first through hole 1 in addition to the multiple bolt holes 122 It has 24a. When the first flange 106a is viewed in the longitudinal direction, the first through hole 124a is It is located on the side closer to the first diaphragm 104. That is, the first through hole 124a is The first flange 106a has one side that contacts the first diaphragm 104, and a plurality of bolt holes 1 It is positioned between the region where 22 is provided. The first flange 106b is positioned between the first flange It has the same form as 106a, and in addition to multiple bolt holes, it has a third through hole 124c. The second flanges 108a and 108b are provided with only a number of bolt holes 122, and the first It does not have through holes corresponding to the first through hole 124a and the third through hole 124c.

[0064] The second diaphragm 114 has third flanges 116a, 116b, and a fourth flange. 118a and 118b are joined together. The third flanges 116a and 116b have substantially the same shape. The flange surface is positioned parallel to the material axis direction of the second steel pipe column 112, and at a predetermined interval. They are provided so as to face each other. The fourth flanges 118a and 118b have flange surfaces that face the second The third flanges 116a and 116b are arranged in a direction parallel to the material axis direction of the steel pipe column 112. They are oriented in opposing directions and intersecting directions, and are arranged to face each other at predetermined intervals. 9(A) The third flange 116a is on the 22nd surface of the second steel pipe column 112, and the third flange Flange 116b is on the 24th surface, the fourth flange 118a is on the 21st surface, and the fourth flange 118 This shows a configuration in which b is arranged in relation to the 23rd surface. As shown in the figure, each flange is adjacent to The ends are arranged to be in contact. With this flange arrangement, the second diaphragm On the ram 114 are the third flange 116a, the third flange 116b, and the fourth flange A region is formed, enclosed by 118a and the fourth flange 118b.

[0065] The third flange 116a is flat and has a second through hole 124b and a plurality of bolt holes 1 It has 22. When the third flange 116a is viewed in the longitudinal direction, the second through hole 124b is It is located on the side closer to the diaphragm 114. That is, the second through hole 124b is located on the side closer to the diaphragm 114. The flange 116a of part 3 has one side that contacts the second diaphragm 114, and there are multiple bolt holes 12 It is positioned between the region where 2 is provided. The third flange 116b is positioned between the third flange 1 It has the same configuration as 16a, and in addition to multiple bolt holes, it has a fourth through hole 124d (not shown). On the other hand, the fourth flanges 118a and 118b are provided with only a number of bolt holes 122. Furthermore, through holes corresponding to the second through hole 124b and the fourth through hole 124d are provided. do not have.

[0066] The first through hole 124a, the second through hole 124b, the third through hole 124c, and shown There is no limitation on the size of the fourth through-hole 124d. These through-holes can be used as handholes. Therefore, it has a hole diameter that allows workers to insert tools and perform bolt joint construction. It is preferable to do so. There are no limitations on the shape of these through holes, and they are circular as shown in Figure 9(A). It may be an ellipse, a rectangle, or any polygon. Multiple bolt holes 122 provided in the flange have a diameter that allows bolts, which are fasteners, to be inserted. They are available and will be placed as appropriate.

[0067] The first splice plates 130a, 130b are attached to the first flanges 106a, 106b and the fourth The second splice plates 132a and 132b are positioned on the outside of flanges 118a and 118b. Located on the outside of flanges 108a and 108b of the second flange and flanges 116a and 116b of the third flange. The third splice plates 140a and 140b are attached to the first flanges 106a and 106b, and The fourth flanges 118a and 118b are located inside the fourth splice plates 142a and 142b This is inside the second flanges 108a, 108b and the third flanges 116a, 116b They are positioned as follows. Each reinforcing plate is provided with bolt holes 122.

[0068] As shown in Figure 9(A), the first flange 106a and the third flange 116a are The flange surfaces are arranged facing the same direction (first direction). Flange 108a and the fourth flange 118a have their respective flange surfaces facing the same direction (the second side). It is positioned facing the (direction). The second direction is the direction that intersects 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 lunge surfaces are positioned flush with each other. The second flange 108a and the third flange 116a, the first flange 106b and fourth flange 118b, second flange 108b and third flange Similarly, the 116b is positioned so that each flange surface is flush with the surface.

[0070] The first flanges 106a, 106b and the third flanges 116a, 116b are the second For flanges 108a, 108b and the fourth flanges 118a, 118b, in the axial direction of the material It is formed to be long. In other words, the first flange 106a is the first The area in which multiple bolt holes 122 are provided by the through hole 124a is the second In the flange 108a, it is positioned higher than the area where multiple bolt holes 122 are provided. It is placed there. Also, the third flange 116a is provided with the second through hole 124b. The region in which multiple bolt holes 122 are provided is a region in the fourth flange 118a It is positioned lower than the area where the bolt hole 122 is provided. This positional relationship is Positional relationship between the first flange 106b and the second flange 108b, third flange The same applies to the positional relationship between 116b and the fourth flange 118b.

[0071] Figure 9(B) shows that the first steel pipe column 102 and the second steel pipe column 112 are arranged vertically, and the first This shows an embodiment in which the bolt joint 100a and the second bolt joint 100b are formed (Figures) However, a third bolt joint 100c and a fourth bolt joint 100d are formed on the rear side. (to be done). The first bolted joint 100a is connected to the first flange 106a and the fourth flange 1 18a is sandwiched between the first reinforcing plate 130a and the third reinforcing plate 140a, and the bolt and nut It is formed by fastening with a bolt. Similarly, the second bolt joint 100b is formed by the second The flange 108a and the third flange 116a are connected to the second splice plate 132a and the fourth splice plate It is formed by being sandwiched between plate 142a and fastened with bolts and nuts. In this embodiment as well, if sufficient strength can be maintained at the bolted joint, the bolt will abut against the inside or outside. The supporting plate can be omitted.

[0072] Figure 10 shows a front view of the joint structure of a steel pipe column according to this embodiment. First bolted joint 1 In 00a, the first reinforcing plate 130a and the third reinforcing plate 140a (not shown) are the first It abuts against both flange 106a and the fourth flange 118a, and the first through hole 124a It has a size that does not block the opening. This configuration has a second bolt joint 100b and a third bolt The same applies to the bolt joint 100c (not shown) and the fourth bolt joint 100d. ru.

[0073] As explained with reference to Figures 9(A) and 9(B), the bolt of the first flange 106a The region in which the bolt holes 122 are formed and the bolt holes 122 of the second flanges 108a and 108b The height of the formed area is different. Also, the bolt hole 122 of the third flange 116a The region where the above is formed and the bolt holes 122 of the fourth flanges 118a and 118b are formed The heights of the regions are different. Therefore, the height of the first bolt joint 100a and the height of the second bolt The heights of the 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). However, the same applies to the third through hole 124c), and the second through hole 124b is on the upper side of the second bolt joint. The fourth through-hole 124d is located above the fourth bolt joint 100d.

[0074] In this way, the heights of the bolt joints and through holes formed on adjacent surfaces are made different, and at an angle By arranging them in an I-shape, all the through-holes on each side of the steel pipe column are positioned at the same height. By eliminating this, the resistance to axial force, shear force, and bending stress acting on the steel pipe column can be increased. can.

[0075] As shown in Figure 10, the first through hole 124a is in the first bolt joint 100a Located on the lower side, the second through hole 124b and the fourth through hole 124d are adjacent to each other on the surface. It is positioned on the upper side. In this way, multiple through-holes of different heights are connected to a single bolt joint. The placement of holes makes work at the construction site easier. In other words, workers can Multiple through-holes of different heights and directions allow tools to be inserted to facilitate bolt joint work. It is possible.

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

[0077] As shown in Figure 11(A), the first flange 106 is placed on the first diaphragm 104. a and the first flange 106b are positioned opposite each other, and the second flange 108a and the second The flange 108b is positioned to face the other. With this flange arrangement, The first through-hole 124a is located on the first surface 11 side of the first steel pipe column 102, and the third surface 13 side Three through holes 124c are positioned. Also, a second bore is provided on the second surface 12 side of the first steel pipe column 102. A bolt joint 100b is formed, and a fourth bolt joint 100d is formed on the fourth surface 14 side. As shown in Figure 11(B), the third flange 11 is placed on top of the second diaphragm 114. 6a and the third flange 116b are positioned opposite each other, and the fourth flange 118a and The fourth flange 118b is positioned to face it. Furthermore, a second through-hole 124b is located on the second surface 22 side of the second steel pipe column 112, and the fourth surface 24 A fourth through-hole 124d is located on the side. Also, on the first surface 21 side of the second steel pipe column 112 A bolted joint 100a is formed on the first surface 23, and a third bolted joint 100c is formed on the third surface 23. It will be done.

[0078] As shown in Figure 11(A), the second bolted joint 100b is connected to the first splice plate 130b, The third reinforcing plate 140b sandwiches the second flange 108a, and bolts 15 are inserted into the bolt holes 122. The second flange 108a is formed by inserting 0 through and fastening with nut 152. By forming the bolt hole 122, the cross-sectional area of ​​that part is compared with the cross-sectional area of ​​other parts. Although it becomes smaller, the first reinforcing plate 130b and the third reinforcing plate 140b are provided. This compensates for the reduction in cross-sectional area and suppresses the decrease in shear strength. First splice plate 130a The thickness of the third reinforcing plate 140a can be set as appropriate. Such a configuration is the first The bolt joint 100a, the third bolt joint 100c, and the fourth bolt joint 100d The same applies to this matter.

[0079] As is clear from Figures 11(A) and 11(B), the first steel pipe column 102 and the At the joint portion between the 2 steel pipe column 112, through holes are arranged in four directions so as to be sandwiched between the bolted joints. It is placed. In such a joint structure, the through hole is provided in the flange. The flanges that are not provided have different lengths in the axial direction of the material, and these two types of flanges are bolted together. As a result, as shown in Figures 9(B) and 10, the position of the through-hole and the position of the bolt joint are oblique. They can be arranged in a hull shape. The flange provided at the joint portion has such a configuration. This allows for the construction of bolt connections to link the first steel pipe column 102 and the second steel pipe column 112. It can enhance sexual performance.

[0080] According to this embodiment, the first through hole 124a, the second through hole 124b, and the third through hole 1 24c and the fourth through hole 124d are used as handholes, and the joint where the flange is placed By setting the bolts from the inside of the handle section and tightening them, the two steel pipe columns are secured at the construction site. It can be joined. Bolt joining is technically easier than welding, and by following the procedure, the quality can be improved. The quality can also be stabilized. And multiple piers can be used as handholes. By arranging the through-holes at an angle (with different opening directions), the amount of welding at the construction site can be reduced. To minimize the amount of material used, improve the workability of bolted joints, and ensure that the strength of the joint is equal to or greater than that of other parts. A joint structure with greater strength than this can be obtained.

[0081] In this embodiment as well, similar to the first embodiment, the diameter of the steel pipe columns is changed midway through the first floor. This becomes possible. In other words, a bolted joint 100 is provided in the middle of the first floor section, and the first steel By connecting the pipe column 102 and the second steel pipe column 112, the diameter of the column on the base side (first steel pipe column 102) is By making it thicker, the diameter of the column at the top (second steel pipe column 112) can be made thinner, and the bending moment It is possible to create a structure suitable for small column capitals.

[0082] [Fourth Embodiment] This embodiment is a joint structure for a steel pipe column shown in the fourth embodiment, with a through hole provided. The following describes different configurations of the lunge arrangement. In the following, the parts that differ from the fourth embodiment are described below. I explain it to my mind.

[0083] Figure 12(A) shows an unfolded view of the joint portion of the steel pipe column according to this embodiment, and Figure 12(B) shows the steel Figure 12(A) shows a perspective view of the joint section of the pipe column. Note that fasteners such as bolts and nuts are shown in Figure 12(A). It has been omitted.

[0084] As shown in Figure 12(A), on the first diaphragm 104, corresponding to the first surface 11, A first flange 106a having a through hole 124a is provided, corresponding to the second surface 12 A first flange 106b having a second through hole 124b is provided. Also, the third surface 13 Corresponding to this, a second flange 108a (not shown) is provided, and corresponding to the fourth surface 14, Two flanges 108b are provided. The second diaphragm 114 corresponds to the first surface 21. A fourth flange 118a is provided, and a fourth flange 118b is provided corresponding to the second surface 22. 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 (Figure) is provided corresponding to the fourth surface 24. A third flange 116b is provided, having (not shown).

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

[0086] As shown in Figure 12(B), when the first steel pipe column 102 and the second steel pipe column 112 are joined together... These two L-shaped structures are positioned to interlock. As a result, the first bolted joint Section 100a and the second bolt joint section 100b are formed at the same height, and the first through hole 124 a and the second through-hole 124b are positioned at the same height.

[0087] Figure 13 shows a front view of the joint structure of a steel pipe column according to this embodiment. The first surface 11 of the steel pipe column and A first bolt joint 100a is formed on the side of the first surface 21, and the second surface 12 and the second surface 22 A second bolt joint 100b is formed on the side of the fourth surface 14 and the fourth surface 24 A bolted joint 100d is formed (not shown, but on the sides of the third surface 13 and the third surface 23) (The third bolted joint 100c is formed).

[0088] As shown in Figure 13, the first through hole 124a and the second through hole 124b are adjacent to each other. They are positioned at the same height on both surfaces. In other words, the first bolted joint 100a is positioned below the first bolted joint 100a. A through hole 124a is positioned below the second bolt joint 100b. b is positioned. Also, the fourth through hole 124d is connected to the third through hole 124c (not shown). They are positioned at the same height. The fourth through hole 124d is connected to the fourth bolt joint 100d It is positioned on the upper side.

[0089] Figure 14(A) shows the structure when the area indicated by arrow A7 in Figure 13 is viewed in cross-section. Figure 14(B) shows the structure when the area indicated by arrow A8 in Figure 13 is viewed in cross-section.

[0090] As shown in Figure 14(A), the first flange 106 is placed 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 flanges 108b and the first steel pipe column are arranged in an L-shape. With this arrangement of flanges, the first steel pipe column A first through hole 124a is located on the first surface 11 side of 102, and a second through hole is located on the second surface 12 side. 124b is positioned at the same height. Also, the third bo is placed on the third surface 13 side of the first steel pipe column 102. A bolt joint 100c is formed, and a fourth bolt joint 100d is formed on the fourth surface 14 side at the same height. It is formed by the following. Also, as shown in Figure 14(B), the second diaphragm 114 is placed on top of the second diaphragm 114. The third flange 116a and the third flange 116b are arranged in an L-shape, and the fourth flange 118a and the fourth flange 118b are arranged in an L-shape. This flange arrangement As a result, the third through hole 124c is positioned on the third surface 23 side of the second steel pipe column 112, and the fourth surface The fourth through hole 124d is located at the same height on the 24 side. A first bolted joint 100a is formed on the first surface 21, and a second bolted joint is formed on the second surface 22. 100b is formed at the same height.

[0091] The joint structure of the steel pipe column according to this embodiment is provided with through holes of the same height on two adjacent surfaces, Two other adjacent surfaces facing these two adjacent surfaces have through holes of the same height, and adjacent The structure has two faces with different heights for the through-holes and two other adjacent faces. With this arrangement of through holes, for example, when performing bolt joints using both arms... This can improve work efficiency. And, by making such a set of through holes at different heights... By arranging them at an angle, the workability when forming bolted connections on each surface is improved. This allows for minimizing the amount of welding at the construction site, improving the workability of bolted joints, and enabling connection. A joint structure can be obtained in which the strength of one part is equal to or greater than that of the other parts. Furthermore, because the through holes located on each face of the steel pipe column are not all at the same height, the joint This can suppress the decrease in strength of that part.

[0092] Note that the arrangement of the flanges with through holes is different from that shown in Figure 12(A). This is also acceptable. Figure 15(A) shows an unfolded view of a joint section of a steel pipe column according to another embodiment of this model. Figure 15(B) shows a perspective view of the joint section of the steel pipe column. Also, as indicated by arrow A9 in Figure 15(B) Figure 16(A) shows the structure of the part when viewed in cross-section, and the part indicated by arrow A10 is viewed in cross-section. The structure at that time is shown in Figure 16(B).

[0093] As shown in Figure 15(A), on the side of the first steel pipe column 102, corresponding to the first surface 11, A flange 106a is provided, and a second flange is provided corresponding to the 12th, 13th, and 14th surfaces. Sections 108a, 108b, and 108c are arranged to form a U-shape. The first flange The first through hole 124a is provided in the 106a. The second flange 108a, 10 Only bolt holes 122 are provided in 8b and 108c, and through holes for forming handholes are not provided. It is not kicked. On the second steel pipe column 112 side, there is a fourth flange 118 corresponding to the 21st surface. a is provided, and a third flange 116a is provided corresponding to the 22nd, 23rd, and 24th surfaces. 116b and 116c are provided so as to form a U shape. On the third flange 116a is provided with a second through hole 124b. Also, although not shown in FIG. 15(A), the third flange 116b is provided with a third through hole 124c, and the third flange 116c is provided with a fourth through hole 124d. The fourth flange 118a is provided with only bolt holes 122 and no through holes forming a hand hole.

[0094] FIG. 15(B) shows a structure in which the first steel pipe column 102 and the second steel pipe column 112 having such an arrangement are bolted together. As shown in FIG. 15(B), the first through hole 124a 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. Thus, the structure of the joint portion of the steel pipe column according to another form of the present embodiment is such that the second through hole 124b (and the third through hole 124c and the fourth through hole 124d) are arranged at different heights

[0095] with respect to the first through hole 124a. In other words, the second through hole 124b (and the third through hole 124c and the fourth through hole 124d) are arranged obliquely with respect to the first through hole 124a. As shown in FIG. 16(A), the first through hole 124a is arranged on the side However, a fourth through hole 124d is located on the fourth surface 24 side, and a first bolt connection is made on the first surface 21 side. Part 100a is positioned. In this way, by changing the arrangement of the flange, it can be provided on three surfaces. The through holes provided on one surface are at the same height, while the through holes provided on the other surface are at different heights. This is possible. And by placing three through holes at the same height, when multiple people are working on the construction... Furthermore, they can perform tasks simultaneously without interfering with each other. In this case, at least By making the height of each through-hole different, it becomes possible to insert tools from different angles. This improves the workability of bolted connections. The second through hole is connected to the first through hole 124a. The through hole 124b, the third through hole 124c, and the fourth through hole 124d are each angled. By arranging them in this way, workability can be improved when forming bolted joints on each surface. Furthermore, the amount of welding at the construction site is minimized, the workability of bolted joints is improved, and the joints A joint structure can be obtained in which the strength of one part is equal to or greater than that of the other parts. Because not all of the through-holes on each side of the steel pipe column are at the same height, the joint section This can suppress the decrease in intensity.

[0096] Furthermore, in this embodiment as well, similar to the first embodiment, the thickness of the steel pipe column is reduced midway through the first floor. It becomes possible to change the height. That is, by providing a bolted 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 diameter of the first column can be increased, and the diameter of the column at the top (second steel pipe column 112) can be decreased, and the bending moment It is possible to create a structure suitable for column heads with small ments.

[0097] [Fifth Embodiment] In the joint structure of the steel pipe column shown in the fourth embodiment, a reinforcing plate is provided, similar to the second embodiment. It may be kicked. This embodiment shows the steel when a reinforcing plate is provided on a flange having a through hole. This shows the joint structure of the pipe column.

[0098] Figure 17(A) shows an unfolded view of the joint portion in the joint structure of the steel pipe column according to this embodiment. Figure 17(B) shows a perspective view of the joint structure of the steel pipe column according to this embodiment. Note that Figure 17(A) In this example, fastening components such as bolts and nuts are omitted.

[0099] As shown in Figures 17(A) and 17(B), the first reinforcing plate 160 is the first flange It is provided in the region enclosed by 106a, 106b and the second flanges 108a and 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 are provided so as to be in contact with the inner flange surfaces of the first flanges 106a and 106b. Furthermore, the first reinforcing plate 160 is located on the inner flange surface of the second flanges 108a and 108b. The second steel pipe column 112 may have a cross shape in plan view so as to be in contact with it. A second reinforcing plate 162 having a similar structure is also provided on the side.

[0100] Figure 18 shows a front view of the joint structure of the steel pipe column according to this embodiment. A first through-hole 124a (and a third through-hole 124c, not shown) is provided on the side. A first reinforcing plate 160 is provided at the same height as the part. Also, on the side of the second steel pipe column 112 At the same height as the area where the second through hole 124b and the fourth through hole 124d are provided, the second A reinforcing plate 162 is provided.

[0101] The first reinforcing plate 160 is arranged such that one end abuts against the position where the first through hole 124a of the first flange 106a is provided (the same applies to the first flange 106b not shown in the figure). Also, when the first reinforcing plate 160 has a cross shape, it is provided so as to abut against both the second flanges 108a and 108b. The second reinforcing plate 162 is provided such that one end abuts at the position where the second through hole 124b of the third flange 116a is provided, and the other end abuts against the position where the fourth through hole 124d of the third flange 116b is provided. Also, when the second reinforcing plate 162 has a cross shape, it is provided so as to abut against both the fourth flanges 118a and 118b. The first reinforcing plate 160 and the second reinforcing plate 162 are fixed to the respective flanges they abut against by welding. In this way, by providing the first reinforcing plate 160 at the position where the through holes of the first flanges 106a and 106b are provided, the strength of that part can be increased. That is, in the first flanges 106a and 106b, the strength of the part where the first through hole 124a and the third through hole 124c are provided can be supplemented. Similarly, by providing the second reinforcing plate 162 at the position where the through holes of the third flanges 116a and 116b are provided, the strength of that part can be increased. The first reinforcing plate 160 may have a first notch 164a provided at a position overlapping the first through hole 124a (and the third through hole 124c not shown in the figure), and the second reinforcing plate 162 has a second notch 1 provided at a position overlapping the second through hole 124b and the fourth through hole 124d. The first reinforcing plate 160 may have a first notch 164a provided at a position overlapping the first through hole 124a (and the third through hole 124c not shown in the figure), and the second reinforcing plate 162 has a second notch 1 provided at a position overlapping the second through hole 124b and the fourth through hole 124d. The first reinforcing plate 160 may have a first notch 164a provided at a position overlapping the first through hole 124a (and the third through hole 124c not shown in the figure), and the second reinforcing plate 162 has a second notch 1 provided at a position overlapping the second through hole 124b and the fourth through hole 124d. The first reinforcing plate 160 may have a first notch 164a provided at a position overlapping the first through hole 124a (and the third through hole 124c not shown in the figure), and the second reinforcing plate 162 has a second notch 1 provided at a position overlapping the second through hole 124b and the fourth through hole 124d. The first reinforcing plate 160 may have a first notch 164a provided at a position overlapping the first through hole 124a (and the third through hole 124c not shown in the figure), and the second reinforcing plate 162 has a second notch 1 provided at a position overlapping the second through hole 124b and the fourth through hole 124d. The first reinforcing plate 160 may have a first notch 164a provided at a position overlapping the first through hole 124a (and the third through hole 124c not shown in the figure), and the second reinforcing plate 162 has a second notch 1 provided at a position overlapping the second through hole 124b and the fourth through hole 124d. The first reinforcing plate 160 may have a first notch 164a provided at a position overlapping the first through hole 124a (and the third through hole 124c not shown in the figure), and the second reinforcing plate 162 has a second notch 1 provided at a position overlapping the second through hole 124b and the fourth through hole 124d.

[0102] In this way, by providing the first reinforcing plate 160 at the position where the through holes of the first flanges 106a and 106b are provided, the strength of that part can be increased. That is, in the first flanges 106a and 106b, the strength of the part where the first through hole 124a and the third through hole 124c are provided can be supplemented. Similarly, by providing the second reinforcing plate 162 at the position where the through holes of the third flanges 116a and 116b are provided, the strength of that part can be increased. In this way, by providing the first reinforcing plate 160 at the position where the through holes of the first flanges 106a and 106b are provided, the strength of that part can be increased. That is, in the first flanges 106a and 106b, the strength of the part where the first through hole 124a and the third through hole 124c are provided can be supplemented. Similarly, by providing the second reinforcing plate 162 at the position where the through holes of the third flanges 116a and 116b are provided, the strength of that part can be increased. In this way, by providing the first reinforcing plate 160 at the position where the through holes of the first flanges 106a and 106b are provided, the strength of that part can be increased. That is, in the first flanges 106a and 106b, the strength of the part where the first through hole 124a and the third through hole 124c are provided can be supplemented. Similarly, by providing the second reinforcing plate 162 at the position where the through holes of the third flanges 116a and 116b are provided, the strength of that part can be increased. In this way, by providing the first reinforcing plate 160 at the position where the through holes of the first flanges 106a and 106b are provided, the strength of that part can be increased. That is, in the first flanges 106a and 106b, the strength of the part where the first through hole 124a and the third through hole 124c are provided can be supplemented. Similarly, by providing the second reinforcing plate 162 at the position where the through holes of the third flanges 116a and 116b are provided, the strength of that part can be increased. In this way, by providing the first reinforcing plate 160 at the position where the through holes of the first flanges 106a and 106b are provided, the strength of that part can be increased. That is, in the first flanges 106a and 106b, the strength of the part where the first through hole 124a and the third through hole 124c are provided can be supplemented. Similarly, by providing the second reinforcing plate 162 at the position where the through holes of the third flanges 116a and 116b are provided, the strength of that part can be increased. In this way, by providing the first reinforcing plate 160 at the position where the through holes of the first flanges 106a and 106b are provided, the strength of that part can be increased. That is, in the first flanges 106a and 106b, the strength of the part where the first through hole 124a and the third through hole 124c are provided can be supplemented. Similarly, by providing the second reinforcing plate 162 at the position where the through holes of the third flanges 116a and 116b are provided, the strength of that part can be increased.

[0103] The first reinforcing plate 160 may have a first notch 164a provided at a position overlapping the first through hole 124a (and the third through hole 124c not shown in the figure), and the second reinforcing plate 162 has a second notch 1 provided at a position overlapping the second through hole 124b and the fourth through hole 124d.<00​​​​64b may be provided. Shape of the first notch 164a and the second notch 164b The shape is arbitrary, but for example, it may have a semicircular shape with approximately the same diameter as each through hole. It is also acceptable to have a first notch 164a in the first reinforcing plate 160 and the second reinforcing plate 162. By providing a second notch 164b, the reinforcing plate does not block part of the through hole. This allows for the insertion of tools, etc., through each through-hole for work. Furthermore, the reinforcing plate does not get in the way, and work efficiency is not reduced.

[0104] Figure 19(A) shows the structure of the area indicated by arrow A11 in Figure 18 when viewed in cross-section. Figure 19(B) shows the structure when the area indicated by arrow A12 in Figure 18 is viewed in cross-section. .

[0105] As shown in Figure 19(A), of the first flange 106a and the first flange 106b A first reinforcing plate 160 is provided so as to be in contact with the side flange surface. Also, as shown in the figure If the first reinforcing plate 160 has a cross shape in plan view, then the second flange 108 It is provided so as to be in contact with the inner flange surface of a and the second flange 108b. The reinforcement plate 160 is provided in a position that overlaps with the first through hole 124a and the third through hole 124c. The end of the first reinforcing plate 160 has a first notch so as not to block some of these through holes. A section 164a is provided. The second reinforcing plate 162 shown in Figure 19(B) has a similar configuration. , a second notch 164 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), reinforcing plates are provided in the areas where flanges are installed. By doing so, the strength of that part can be increased. In particular, when a through hole is made in the flange In this case, by providing a reinforcing plate, the reduction in strength (rigidity) caused by the creation of through holes is compensated for. It is possible.

[0107] Furthermore, the first reinforcing plate 160 and the second reinforcing plate 162 are joined by bolt connections. This is also fine. For example, as shown in Figure 20, the first reinforcing plate 160 and the second reinforcing plate 162 are connected A fifth reinforcing plate 144 and a sixth reinforcing plate 146 are provided in the same manner as in the example shown in the second embodiment. A bolted joint can be formed. The fifth splice plate 144 and the sixth splice plate 146 are , a first notch 164a formed in the first reinforcing plate 160, and a second reinforcing plate 162 It is preferable that the width does not overlap with the second notch 164b.

[0108] Other configurations of the steel pipe column according to this embodiment are the same as those of the fourth embodiment, and similar The effects of the first embodiment can be achieved. That is, in this embodiment as well, the first embodiment and Similarly, it is possible to change the thickness of the steel pipe column midway through the first floor, and the column base side (first steel pipe column) The diameter of column 102) can be increased, and the diameter of column 112 (the second steel pipe column) can be decreased. This allows for the creation of a structure suitable for column heads with small bending moments.

[0109] [Sixth Embodiment] This embodiment is a joint structure for a steel pipe column shown in the third embodiment, in which the flange configuration is different. This embodiment will be shown. The following description will focus on the differences from the third embodiment.

[0110] Figure 21(A) shows an unfolded view of the joint portion of the steel pipe column according to this embodiment, and Figure 21(B) shows the steel Figure 22(A) shows a perspective view of the joint section of the pipe column. Also, in Figure 21(B), arrow A13 The structure of the area indicated by the arrow is shown in cross-section, and Figure 22(B) is shown in Figure 21(B) with the arrow The structure of the part indicated by A14 is shown in cross-section. Note that in Figure 21(A), the bolt Nuts and other fasteners are omitted. In the following explanation, Figures 21(A) and 21 (B), and the explanation will be given with reference to Figures 22(A) and 22(B).

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

[0112] Furthermore, the thickness of the second flange 108a is relative to the thickness of the third flange 116a. It may be thin. The second splice plate 132a and the fourth splice plate 142a, the second flange 1 When sandwiching 08a and the third flange 116a, ensure that no gap is created due to the difference in plate thickness. A spacer 148b is provided on the back surface of the second flange 108a. The spacer 148b is It has a thickness approximately equal to the difference in plate thickness between the second flange 108a and the third flange 116a. A bolt hole is provided, and it is sandwiched between the second flange 108a and the fourth splice plate 142a. A bolted joint can be formed so that no gaps are created. (Figures 22(A) and 2) As shown in 2(B), spacers are provided at each bolt joint (first bolt joint 1 Spacer 148a at 00a, spacer 148b at the second bolt joint 100b, third bolt Spacer 148c is placed at the bolt joint 100c, and spacer 148 is placed at the fourth bolt joint 100d. (d is provided).

[0113] Furthermore, regarding the second flange 108 and the fourth flange 118, which do not have through holes: Similarly, by increasing the plate thickness, the shear force and bending force due to the bolt holes are reduced. This can compensate for the decrease in strength (rigidity) against stress and axial stress.

[0114] The joint structure of the steel pipe column according to this embodiment is a third type, except that the flange thickness has been increased. This is the same as in the embodiment. Therefore, in addition to the above effects, the same advantages as in the third embodiment are The effect can be obtained. Furthermore, this embodiment can be appropriately combined with the fourth and fifth embodiments. It can be implemented by doing so.

[0115] [Seventh Embodiment] A joint structure for a steel pipe column according to one embodiment of this present is shown in Figures 23(A) and 23(B). Refer to the diagrams for explanation. Figure 23(A) shows an unfolded view of the joint of a steel pipe column, and Figure 22(B) shows a corner Figure 23(A) shows a perspective view of the joint of a structural steel pipe column. Note that the fastening of bolts, nuts, etc. The fastening tools have been omitted.

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

[0117] On the first diaphragm 104 are the first L-shaped flanges 107a, 107b, and the second The L-shaped flanges 109a and 109b are joined. The first L-shaped flanges 107a and 107 b, and the second L-shaped flanges 109a, 109b are two flat plates as shown in the figure. The lunge may have an L-shaped configuration, or it may be made of angle steel or metal, although not shown in the illustration. It may also be formed from solid wood. Also, the first L-shaped flanges 107a, 107b, and Each of the second L-shaped flanges 109a and 109b consists of two flat flanges arranged in an L-shape. These are arranged in a way that they are not integrated, and two flat flanges are arranged in an L-shape. They may be positioned so that they do not come into contact with each other. Each L-shaped flange Multiple bolt holes 122 are provided.

[0118] Figure 23(A) shows the first L-shaped flanges 107a and 107b, and the second L-shaped flange 109 This shows an arrangement in which a and 109b are positioned corresponding to the corners of the first diaphragm 104. L-shaped flange 107a is located at the corners of the first surface 11 and the fourth surface 14, and L-shaped flange 1 09a is at the corners of the first surface 11 and the second surface 12, and the first L-shaped flange 107b is at the second surface 12 And at the corner of the third surface 13, the second L-shaped flange 109b is at the corner of the third surface 13 and the fourth surface 14 This shows an arrangement corresponding to the part. With this arrangement of L-shaped flanges, the first die On the aphram 104 are the first L-shaped flanges 107a, 107b and the second L-shaped flange 1 A region is formed by the area enclosed by 09a and 109b.

[0119] The widths L1 and L2 of the first L-shaped flange 107a are equal to the width LD1 of the first diaphragm 104. It is made smaller than 1 / 2 of the first L-shaped flange 107b and the second L-shaped flange The width of the first L-shaped flange 107a is the same for parts 109a and 109b. Therefore, a first gap exists 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 1 A third gap 110c is formed between 09b and the second L-shaped flange 109b and the first L A fourth gap 110d is formed between the flange 107a and the flange.

[0120] The second diaphragm 114 has a third L-shaped flange 117a, 117b, and a fourth L-shaped flanges 119a and 119b are joined. Third L-shaped flanges 117a and 117b The first and fourth L-shaped flanges 119a and 119b are substantially identical to the first L-shaped flange 107a. It has the following configuration: a third L-shaped flange 117a, 117b, and a fourth L-shaped flange 11 9a, 119b are the first L-shaped flanges 107a, 107b and the second L-shaped flange 1 Similar to 09a and 109b, it is positioned corresponding to the corner of the second diaphragm 114. As a result, the second diaphragm 114 has third L-shaped flanges 117a and 117b. Then, a region enclosed by the fourth L-shaped flanges 119a and 119b is formed. And the third A fifth gap 111a is formed between the L-shaped flange 117a and the fourth L-shaped flange 119a. A sixth gap 1 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 117a. It will be accomplished.

[0121] When the first steel pipe column 102 and the second steel pipe column 112 are arranged vertically, the first L-shaped flank The flange 107a and the third L-shaped flange 117a are aligned vertically, and their respective flange surfaces are flush. They are arranged in such a way. The second L-shaped flange 109a and the fourth L-shaped flange 119a are also Similarly, they are arranged vertically, with each flange surface being flush with the surface. Arrangement of the lunge 107b and the third L-shaped flange 117b, and the second L-shaped flange 109 The same applies to the arrangement of b and the fourth L-shaped flange 119b.

[0122] On the outer flange surfaces of the first L-shaped flange 107a and the third L-shaped flange 117a The first splice plates 130a and 130b are in contact. The second L-shaped flange 109a and the fourth The second reinforcing plates 132a and 132b are in contact with the outer flange surface of the L-shaped flange 119a. Also, the inner flanges of the first L-shaped flange 107a and the third L-shaped flange 117a The third reinforcing plates 140a and 140b are in contact with the flange surface, and the second L-shaped flange 109b And on the inner flange surface of the fourth L-shaped flange 119a, the fourth reinforcing plate 142a, 142 b is in contact with it. The first splice plates 130a and 130b are plate-shaped members and have multiple bolt holes 122 is provided. Other reinforcing plates have a similar configuration.

[0123] Figure 23(B) shows the first L-shaped flange 107a and the third L-shaped flange 117a, The first bolt is sandwiched between the first support plates 130a, 130b and the third support plates 140a, 140b. The structure in which the bolt joint 100a is formed is shown. Second bolt joint 100b, third bolt The joint 100c (and a fourth bolted joint 100d, not shown) are similarly arranged vertically. It has a structure that is bolted together by an L-shaped flange and a reinforcing plate.

[0124] Figure 23(B) shows the first steel pipe column 102 and the second steel pipe column 112 arranged vertically. First bolted joint 100a, second bolted joint 100b, third bolted joint 100 The structure is shown joined by c (and a fourth bolted joint 100d, not shown).

[0125] As shown in Figure 23(B), the first bolted joint 100a and the second bolted joint 100 Between b and b, the first opening 120 is formed by the first gap 110a and the fifth gap 111a. a is formed. Also, between the second bolt joint 100b and the third bolt joint 100c Between them, the second gap 110b and the sixth gap 111b form the second opening 120b. 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 112, and the second surface 12 of the first steel pipe column 102 It faces the second surface 22 of the second steel pipe column 112.

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

[0127] The first opening 120a is connected to the first L-shaped flange 107a and the third L-shaped flange 117 a, the second L-shaped flange 109a and the fourth L-shaped flange 119a, and the first diaphragm This is the region enclosed by the ram 104 and the second diaphragm 114. First opening 120 a is the height and width direction of the first L-shaped flange 107a and the third L-shaped flange 117a. Its size can be set by the length (L2 shown in Figure 23(A)).

[0128] Figure 25(A) shows the structure of the area indicated by arrow A15 in Figure 24 when viewed in cross-section. Figure 25(B) shows the structure when the area indicated by arrow A16 in Figure 24 is viewed in cross-section. .

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

[0130] As shown in Figures 25(A) and 25(B), the first L-shaped flange 107a and the third The first reinforcing plates 130a and 130b are in contact with the L-shaped flange 117a from the outside. The third reinforcing plates 140a and 140b are in contact with the inside, and the bolts are inserted into the bolt holes 122. The first bolt joint 100a is formed by the bolt 150 and the nut 152. Also, the second The second splice plate is attached to the L-shaped flange 109a and the fourth L-shaped flange 119a from the outside. 132a and 132b are in contact, and the fourth splice plates 142a and 142b are in contact from the inside. Two bolted joints 100b are formed. The first L-shaped flange 107b and the third L-shaped flange Regarding the lunge 117b, and the second L-shaped flange 109b and the fourth L-shaped flange 119b Even if this is the case, a third bolt joint 100c and a fourth bolt joint 100d are similarly formed. .

[0131] The first gap 110a and the fifth gap 111a are positioned to overlap, forming the first opening 1 20a is formed, and the second gap 110b and the sixth gap 111b are positioned to overlap. Then the second opening 120b is formed, and the third gap 110c and the seventh gap 111c overlap. The third opening 120c is formed by positioning the fourth gap 110d and the eighth gap The fourth opening 120d is formed by being positioned in a position that overlaps 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 and 109b are attached to the first diaphragm 104. Therefore, it can be made thicker than the wall thickness of the first steel pipe column 102. Similarly, the third L-shaped flang The 117a, 117b and the 4th L-shaped flanges 119a and 119b are the 2nd diaphragm 1 Since it is attached to 14, it can be made thicker than the wall thickness of the second steel pipe column 112. This increases the strength of the bolted joint. On the other hand, each L-shaped flange has a gap Because they are arranged in this way, the increase in weight of the joint can be suppressed. Even in cases where sufficient strength can be ensured at the bolted joint, the reinforcing plate and the outer plate are placed on the outside. Of the reinforcing plates placed on the inside, one of the reinforcing plates can be omitted.

[0133] The joint structure of the steel pipe column according to this embodiment uses an L-shaped flange to enable hand hose An opening is formed which is used as a window. The structure shown in Figures 23(A) and 23(B) is This diagram shows a configuration in which L-shaped flanges are placed 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) Alternatively, an L-shaped flange and a flat flange may be combined.

[0134] As shown in the unfolded view in Figure 26(A), the first diaphragm is located on the side of the first steel pipe column 102. On top of 104 are the first L-shaped flanges 107a, 107b, the second L-shaped flange 109a, 1 09b is joined, and on the side of the second steel pipe column 112, the fourth diaphragm is on the second diaphragm 114 Lunges 118a, 118b, 118c (not shown), and 118d are joined. The L-shaped flanges 107a, 107b, the second L-shaped flanges 109a, 109b, and the fourth The flange surfaces of 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 in such a manner. The first reinforcing plates 130a and 130b and the third reinforcing plates 140a and 140b are in contact with 18d. The second L-shaped flange 109a and the fourth flanges 118a and 119 are bolted together. The second reinforcing plates 132a, 132b and the fourth reinforcing plates 142a, 142b are in contact with 8b. It is bolted together.

[0135] As shown in Figure 26(B), the first bolted joint 100a and the second bolted joint 100 A first opening 120a is formed between b and the second bolt joint 100b and the third bolt A second opening 120b is formed between the first opening 120a and the joint 100c. The height of the second opening 120b is determined by the first L-shaped flange 107a and the second L-shaped flange The height (length in the axial direction of the material) of 109a is approximately equal. Also, although not shown in the diagram, the third surface 13 side A third opening is similarly formed on the front, and a fourth opening is similarly formed on the fourth surface 14 side.

[0136] Note that Figures 26(A) and 26(B) show that an L-shaped flange is provided on the side of the first steel pipe column 102. The second steel pipe column 112 is shown to have a flat flange on its side, This is just one example, where a flat flange is provided on the side of the first steel pipe column 102, and the second steel pipe column 112 An L-shaped flange may be provided on the side.

[0137] Furthermore, ribs may be provided on the L-shaped flange. Figure 27(A) shows a flange with ribs. The first L-shaped flanges 107a, 107b and the second L-shaped flanges 109a, 109b Figure 27(B) shows a perspective view, and Figure 27(B) shows a plan view thereof. Rib 166a is the first L-shaped flange It is provided on the inside of 107a. First L-shaped flange 107b, second L-shaped flange 109 Similarly, ribs 166b, 166c, and 166d are provided on a and 109b, respectively. By adding ribs as shown, the out-of-plane rigidity of the L-shaped flange can be increased. This increases the local buckling resistance against compressive axial force acting on the bolted joint, resulting in a stronger structure. A joint structure can be provided.

[0138] According to this embodiment, between the four bolted joints formed by the L-shaped flange, The provision of an opening that can be used as a bolt hole facilitates bolt connection work. This can be done. In other words, the joint between the first steel pipe column 102 and the second steel pipe column 112 In this section, four openings facing different directions are provided, making bolt connection work easier. Yes. In this type of joint structure, by placing L-shaped flanges in four locations, the steel pipe column This makes it possible to increase the resistance to shear forces and bending stresses acting on the material. Thus, this embodiment According to this, the amount of welding at construction sites will be minimized, the workability of bolted joints will be improved, and A joint structure can be obtained in which the strength of the joint portion is equal to or greater than that of the other parts.

[0139] Furthermore, one of the flanges, which are positioned vertically in the axial direction of the material to form a bolted joint, is L-shaped. By using a flange on one side and a flat flange on the other, the shear force and bending stress acting on the steel pipe column can be reduced. This can increase the resistance to welding at construction sites. The goal is to minimize the number of bolts used, improve the workability of bolted joints, and ensure that the strength of the joint is equal to or greater than that of the surrounding areas. A joint structure with the above strength can be obtained.

[0140] In this embodiment as well, similar to the first embodiment, the diameter of the steel pipe columns is changed midway through the first floor. It is possible to increase the diameter of the column at the base (first steel pipe column 102) and the column at the top (second steel The diameter of the column 112) can be reduced, making it a suitable structure for column heads with small bending moments. It is possible to create it.

[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 description will show the modified embodiment. The following description will focus on the differences from the seventh embodiment. .

[0142] Figure 28(A) shows an unfolded view of the joint structure of the steel pipe column according to this embodiment, and Figure 28(B) shows the same A perspective view is shown. Note that in Figure 28(A), fastening members such as bolts and nuts are omitted. It is being done.

[0143] As shown in Figure 28(A), the first diaphragm 104 has a first grooved flange 170 The first groove flange 170 and the second groove flange 172 are joined together. The lunge 172 has a groove-shaped form in which both ends of a flat flange are curved in the same direction. The grooved flange 170 and the second grooved flange 172 have their grooved sides facing each other. They are arranged to face in that direction. In other words, the first grooved flange 170 and the second grooved flange 172 is a groove-shaped curved surface arranged inward on the first diaphragm 104. Furthermore, the first grooved flange 170 and the second grooved flange 172 have flange surfaces that are the The first channel flange 170 is oriented parallel to the material axis direction of the steel pipe column 102. The second grooved flange 172 has a flat portion along one side of the first diaphragm 104, The groove-shaped curved portion has a flange surface, and each portion is provided with multiple bolt holes 122. ru.

[0144] The length L3 of the bent portion of the first grooved flange 170, and the length of the second grooved flange The total length L4 of the groove-shaped bent portion of the 172 is equal to the length of the first diaphragm 104. The width LD1 has a value smaller than half. Therefore, the first groove flange 170 and the second When the grooved flange 172 is positioned opposite each other, the grooved ends come into contact with each other. Alternatively, they can be arranged to have a first gap 110a and a second gap 110b.

[0145] The second diaphragm 114 has a third grooved flange 180 and a fourth grooved flange 18 2 is joined. The third groove flange 180 and the fourth groove flange 182 are joined to the first groove The second diaphragm has a similar configuration to the first flange 170 and the second grooved flange 172. It is similarly joined to M114. However, the first gap 110a is on the side of the first surface 11, and the second gap While the gap 110b is formed on the side of the third surface 13, the third groove flange 180 and the fourth The fifth gap 111a formed by the grooved flange 182 is on the side of the second surface 22, and the sixth gap 111a is on the side of the second surface 22. The gap 111b is located on the side of the fourth surface 24.

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

[0147] The outer flange surfaces of the first grooved flange 170 and the third grooved flange 180 are The reinforcing plates 130a and 130b are in contact with each other, and a third reinforcing plate 140a is on the inner flange surface. 140b is brought into contact with the bolted joint. The first splice plates 130a, 130b and The second reinforcing plates 132a and 132b are the first grooved flange 170 and the third grooved flange It has a length that can contact both sides of 180. Also, the second groove flange 172 and The outer flange surface of the fourth groove-shaped flange 182 has second reinforcing plates 132a and 132b The bolts are in contact with the inner flange surface, and the fourth reinforcing plates 142a and 142b are in contact with the inner flange surface. A joint is formed.

[0148] Figure 28(B) shows the first steel pipe column 102 and the second steel pipe column 112 arranged vertically and connected. By joining them together, the first bolted joint 100a, the second bolted joint 100b, This shows an embodiment in which the third bolt joint 100c is formed (although not shown, the fourth bolt joint is formed on the back side). The bolt joint 100d is formed. The first bolt joint 100a is the first groove-shaped The lunge 170 and the third grooved flange 180 are connected to the first reinforcing plate 130a and the third reinforcing plate 1 40a, and by the first reinforcing plate 130b and the third reinforcing plate 140b (not shown) It is formed by being sandwiched and fastened with bolts and nuts. Also, the second bolt connection The joint 100b is formed by the second groove flange 172 and the fourth groove flange 182, and the second attachment The support plate 132a and the fourth support plate 142a (not shown), and the second support plate 132b and the fourth support plate It is sandwiched between the reinforcing plate 142b (not shown) and fastened with bolts and nuts. It is formed by the following. The third bolt joint 100c is formed by the second groove flange 172 and The fourth grooved flange 182, and the fourth bolted joint 100d, are connected to the first grooved flange The 170 and the fourth grooved flange 182 are similarly formed via a splice plate.

[0149] As shown in Figure 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 12 and the second steel pipe column. The opening 120a has a first grooved flange 170 and a second grooved flange 172 and a third Formed in the region surrounded by the grooved flange 180 and the first diaphragm 104, the second The opening 120b is connected to the second grooved flange 172, the third grooved flange 180 and the fourth It is formed in the region surrounded by the grooved flange 182 and the second diaphragm 114.

[0150] Figure 29(A) shows the cross-sectional structure of the area indicated by arrow A17 in Figure 28(B), and other marks A1 The cross-sectional structure of the part indicated by 8 is shown in Figure 29(B). As shown in Figure 29(A), the first groove shape By positioning flange 170 and the second groove-shaped flange 172 at a distance from each other, the 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 the first opening 120a, and the second gap 110b forms the third An opening 120c is formed. As shown in Figure 29(B), the third groove flange 180 and the The groove-shaped flange 182 of the 4 is positioned at a distance from the 5th gap on the 2nd surface 22 side. 111a is formed, and a sixth gap 111b is formed on the fourth surface 24 side. Fifth gap 11 1a forms the second opening 120b, and the sixth gap 111b forms the fourth opening 120d. To accomplish.

[0151] As shown in Figures 29(A) and 29(B), the first opening 120a and the third opening 120c is formed by the first grooved flange 170 and the second grooved flange 172. The second opening 120b and the fourth opening 120d are connected to the third groove flange 180 and the fourth It is formed by the grooved flange 182. Therefore, the first opening 120a and the third opening The mouth portion 120c, the second opening 120b, and the fourth opening 120d are shaped at different heights. This is accomplished. That is, as shown in Figure 28(B), the second is made relative to the first opening 120a The opening 120b is formed at a high position.

[0152] Thus, the joint structure of the steel pipe column according to this embodiment has two adjacent surfaces of different heights An opening can be provided. With such an arrangement of openings, for example, using both arms This can improve work efficiency when installing bolted joints. By arranging the openings at different heights and in an oblique manner, bolt connections are formed on each surface. This improves work efficiency and minimizes the amount of welding required at construction sites, and reduces the amount of bolts. To improve the workability of joining and to ensure that the strength of the joined part is equal to or greater than that of the other parts. A hand structure can be obtained. Also, all the openings placed on each face of the steel pipe column are at the same height. By not arranging them, the reduction in strength of the joint can be suppressed.

[0153] In this embodiment as well, similar to the first embodiment, the diameter of the steel pipe columns is changed midway through the first floor. It is possible to increase the diameter of the column at the base (first steel pipe column 102) and the column at the top (second steel The diameter of the column 112) can be reduced, making it a suitable structure for column heads with small bending moments. It is possible to create it.

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

[0155] As shown in Figure 30, even if the first diaphragm 104 is provided with a through hole 126 Good. Also, although not shown in the diagram, the second diaphragm 114 may have through holes. Figure 30 shows an embodiment in which a through hole 126 is provided approximately in the center of the first diaphragm 104. The number of through holes 126 is not limited, and multiple holes are provided within the first diaphragm 104. This is also good. By providing a through hole 126 in the first diaphragm 104, the weight of the joint can be reduced. This can be achieved, and the weight of the column can be reduced. Similarly, through holes may also be provided.

[0156] Furthermore, the column 202 shown in this embodiment is a concrete-filled steel pipe structure (Concrete It can be applied to Filled Steel Tubes (also called CFTs). The diaphragm 104 and the second diaphragm 114 are connected through through holes provided in them. Concrete is filled inside the joined first steel pipe column 102 and second steel pipe column 112. As a result, even if the cross-sectional area of ​​the first steel pipe column 102 and the second steel pipe column 112 is reduced, the strength remains high. It is possible to form such a structure.

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

[0158] [Note] The exemplary embodiments disclosed above, in whole or in part, are described as follows: Embodiments may include, but are not limited to, certain configurations.

[0159] [Note 1] A first diaphragm provided at one end of the first steel pipe column, and the axial direction of the first steel pipe column The flange surface is positioned parallel to the first L-shaped flange, which is joined to the first diaphragm. A second L-shaped flange and a second diaphragm provided at one end of the second steel pipe column, The flange surface is positioned parallel to the material axis direction of the second steel pipe column, and the second diaphragm The joined third L-shaped flange and fourth L-shaped flange, the first splice plate and the second splice A plate and a plate, wherein the first diaphragm and the second diaphragm face each other, The second steel pipe column is placed on top of the first steel pipe column, and the first steel pipe column is the second steel It is thicker than the pipe column, and the first L-shaped flange and the second L-shaped flange are spaced apart. The third L-shaped flange and the fourth L-shaped flange are arranged at a distance from each other, and the first The L-shaped flange and the third L-shaped flange are positioned with their respective flange surfaces flush with each other. The second L-shaped flange and the fourth L-shaped flange have their respective flange surfaces flush. The first L-shaped flange and the third L-shaped flange are positioned such that the first splice plate The second L-shaped flange and the fourth L-shaped flange are bolted together via the A joint structure for steel pipe columns, characterized by being bolted together via two reinforcing plates.

[0160] [Note 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] [Note 3] The first steel pipe column and the second steel pipe column are rectangular steel pipe columns, and the first L-shaped flange The second L-shaped flange is provided corresponding to the 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 corner of the second steel pipe column. The joint structure of the steel pipe column as described in Appendix 1 or 2.

[0162] [Note 4] A third reinforcing plate facing the first reinforcing plate, and a fourth reinforcing plate facing the second reinforcing plate It has a plate and the first L-shaped flange and the third L-shaped flange, the first auxiliary The plate and the third reinforcing plate are sandwiched and bolted together, and the second L-shaped flange and the fourth The L-shaped flange is bolted together, sandwiched between the second and fourth reinforcing plates. A joint structure for steel pipe columns as described in any one of the appendices 1 to 3.

[0163] [Note 5] A first diaphragm provided at one end of the first steel pipe column, and the axial direction of the first steel pipe column The flange surface is positioned parallel to the first L-shaped flange, which is joined to the first diaphragm. A second L-shaped flange and a second diaphragm provided at one end of the second steel pipe column, The flange surface is positioned parallel to the material axis direction of the second steel pipe column, and the second diaphragm It includes a third flange joined to the surface, a first splice plate and a second splice plate, the first The first diaphragm and the second diaphragm are positioned on the first steel pipe column so that they face each other. The second steel pipe column is positioned, and the first steel pipe column is thicker than the second steel pipe column, The L-shaped flange and the second L-shaped flange are arranged at a distance from each other, and the first L-shaped flange The flange and the second L-shaped flange and the third flange have their respective flange surfaces flush. The first L-shaped flange and the third flange are arranged, and the first splice plate is connected between them. The second L-shaped flange and the third flange are bolted together, and the second flange is bolted to the second flange. A joint structure for steel pipe columns, characterized by being bolted together via a plate.

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

[0165] [Note 7] The first steel pipe column and the second steel pipe column are rectangular steel pipe columns, and the first L-shaped flange The second L-shaped flange is provided corresponding to the corner of the first steel pipe column, and the third The flange is provided corresponding to one face of the second steel pipe column as described in Appendix 5 or 6. Joint structure for mounted steel pipe columns.

[0166] [Note 8] A third reinforcing plate facing the first reinforcing plate, and a fourth reinforcing plate facing the second reinforcing plate It has a plate and the first L-shaped flange and the third flange, and the first reinforcing plate and The third splice plate is sandwiched between the second L-shaped flange and the third flange and bolted together. The lunge is bolted together with the second and fourth reinforcing plates sandwiched between them. A joint structure for steel pipe columns as described in any one of items 5 to 7.

[0167] [Note 9] A first diaphragm provided at one end of the first steel pipe column, and the axial direction of the first steel pipe column The flange surface is positioned parallel to the first diaphragm and joined to the first diaphragm, with both ends facing the same direction. A first grooved flange and a second grooved flange are bent into a groove shape, and at one end of the second steel pipe column A second diaphragm is provided, and the flange surface is arranged parallel to the material axis direction of the second steel pipe column. A third groove is positioned and joined to the second diaphragm, with both ends curved in the same direction in a groove shape. It includes a shaped flange and a fourth grooved flange, a first reinforcing plate and a second reinforcing plate, and the The first steel pipe column is positioned such that the first diaphragm and the second diaphragm face each other. The second steel pipe column is positioned above, and the first steel pipe column is thicker than the second steel pipe column, The first grooved flange and the second grooved flange are positioned opposite each other with their bent ends spaced apart. Furthermore, the third grooved flange and the fourth grooved flange are separated by their bent ends. They are arranged opposite each other, and the first groove flange and the second groove flange face each other in the direction of opposition. The third groove flange and the fourth groove flange are different, and the first groove flange The flange and the third groove-shaped flange are arranged with their respective flange surfaces flush, and the second The grooved flange and the fourth grooved flange are arranged with their respective flange surfaces flush. The first grooved flange and the third grooved flange are bolted together via the first splice plate. The second grooved flange and the fourth grooved flange are joined together, and the second splice plate A joint structure for steel pipe columns, characterized by being bolted together via a [partition / connector].

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

[0169] [Note 11] The steel described in Appendix 10, wherein the first opening and the second opening are arranged at an angle. Joint structure of pipe columns.

[0170] [Note 12] A third reinforcing plate facing the first reinforcing plate, and a fourth reinforcing plate facing the second reinforcing plate It has a plate and the first grooved flange and the third grooved flange, the first auxiliary The plate and the third reinforcing plate are sandwiched and bolted together, and the second grooved flange and the third The grooved flange is bolted together, sandwiched between the second and fourth reinforcing plates. A joint structure for steel pipe columns as described in any one of the appendices 9 to 11.

[0171] [Note 13] The first steel pipe column and the second steel pipe column are rectangular steel pipe columns, and the first groove-shaped flange and the second grooved flange has a bent end that corresponds to the corner of the first steel pipe column. The third groove flange and the fourth groove flange are provided, and the bent end The part is provided in any one of the appendices 9 to 12, corresponding to the corner of the second steel pipe column. The joint structure of the steel pipe column described. [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 M, 116...3rd flange, 117...3rd L-shaped flange, 118...4th Flange, 119...4th L-shaped flange, 120...opening, 122...bolt Hole, 124... Through hole, 126... Through hole, 130... First reinforcing plate, 132... ...Second support plate, 140...Third support plate, 142...Fourth support plate, 144... • Fifth reinforcing plate, 146... Sixth reinforcing plate, 148... Spacer, 150... Bolt T, 152...nut, 160...first reinforcing plate, 162...second reinforcing plate, 16 4... Notch section, 166... ​​Rib, 170... First grooved flange, 172... Second groove flange, 180... Third groove flange, 182... Fourth groove flange J, 200... Foundation beam, 202... Column, 204... Beam

Claims

1. A first diaphragm is provided at one end of the first rectangular steel pipe column, The flange surfaces are arranged substantially parallel to the material axis direction of the first rectangular steel pipe column, and a pair of flanges are joined to the first diaphragm, A second diaphragm is provided at one end of the second rectangular steel pipe column, The flange surfaces are arranged substantially parallel to the material axis direction of the second rectangular steel pipe column, and a pair of flanges are joined to the second diaphragm, Including a first support plate and a second support plate, The pair of flanges joined to the first diaphragm are arranged to be separated from and facing each other across the central axis of the first rectangular steel pipe column. The pair of flanges joined to the second diaphragm are arranged to be separated from and facing each other across the central axis of the second rectangular steel pipe column. The diameter of the first rectangular steel pipe column is larger than the diameter of the second rectangular steel pipe column. 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, and the second rectangular steel pipe column is positioned on top of the first rectangular steel pipe column such that the positions of the first corner of the first rectangular steel pipe column and the first corner of the second rectangular steel pipe column coincide in the direction of the material axis. A joint structure for a rectangular 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 splice plate, and the other of a pair of flanges joined to the first diaphragm and the other of a pair of flanges joined to the second diaphragm are bolted together via the second splice plate.

2. A first diaphragm is provided at one end of the first rectangular steel pipe column, The flange surface is arranged substantially parallel to the material axis direction of the first rectangular steel pipe column, and a pair of flanges are joined to the first diaphragm, A second diaphragm is provided at one end of the second rectangular steel pipe column, The flange surface of the second rectangular steel pipe column is arranged substantially parallel to the material axis direction, and a pair of flanges are joined to the second diaphragm, Including a first support plate and a second support plate, The pair of flanges joined to the first diaphragm are arranged to be separated from and facing each other across the central axis of the first rectangular steel pipe column. The pair of flanges joined to the second diaphragm are arranged to be separated from and facing each other across the central axis of the second rectangular steel pipe column. The diameter of the first rectangular steel pipe column is larger than the diameter of the second rectangular steel pipe column. 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, and the second rectangular steel pipe column is positioned on top of the first rectangular steel pipe column such that one side of the first rectangular steel pipe column and one side of the second rectangular steel pipe column coincide in the direction of the material axis. A joint structure for a rectangular 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 splice plate, and the other of a pair of flanges joined to the first diaphragm and the other of a pair of flanges joined to the second diaphragm are bolted together via the second splice plate.

3. A first diaphragm is provided at one end of the first rectangular steel pipe column, The flange surfaces of the first rectangular steel pipe column are arranged substantially parallel to the material axis direction, and the first flange and the second flange are joined to the first diaphragm, A second diaphragm is provided at one end of the second rectangular steel pipe column, The flange surfaces of the second rectangular steel pipe column are arranged substantially parallel to the material axis direction, and the third flange and fourth flange are joined to the second diaphragm, Including a first support plate and a second support plate, The diameter of the first rectangular steel pipe column is larger than the diameter of the second rectangular steel pipe column. 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, the flange surface of the second flange and the flange surface of the third flange are flush, and the second rectangular steel pipe column is positioned on top of the first rectangular steel pipe column such that the positions of the first corner of the first rectangular steel pipe column and the first corner of the second rectangular steel pipe column coincide in the direction of the material axis. The first flange is longer in the material axis direction than the fourth flange, and the third flange is longer in the material axis direction than the second flange. A joint structure for a rectangular steel pipe column, characterized in that the first flange and the fourth flange are bolted together via the first splice plate, and the second flange and the third flange are bolted together via the second splice plate.

4. A first diaphragm is provided at one end of the first rectangular steel pipe column, The flange surfaces of the first rectangular steel pipe column are arranged substantially parallel to the material axis direction, and the first flange and the second flange are joined to the first diaphragm, A second diaphragm is provided at one end of the second rectangular steel pipe column, The flange surfaces of the second rectangular steel pipe column are arranged substantially parallel to the material axis direction, and the third flange and fourth flange are joined to the second diaphragm, Including a first support plate and a second support plate, The diameter of the first rectangular steel pipe column is larger than the diameter of the second rectangular steel pipe column. 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, the flange surface of the second flange and the flange surface of the third flange are flush, and the second rectangular steel pipe column is positioned on top of the first rectangular steel pipe column such that one side of the first rectangular steel pipe column and one side of the second rectangular steel pipe column coincide in the direction of the material axis. The first flange is longer in the material axis direction than the fourth flange, and the third flange is longer in the material axis direction than the second flange. A joint structure for a rectangular steel pipe column, characterized in that the first flange and the fourth flange are bolted together via the first splice plate, and the second flange and the third flange are bolted together via the second splice plate.

5. The joint structure for a rectangular steel pipe column according to claim 3 or 4, wherein the first splice plate is located higher than the second splice plate in the axial direction of the material.

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