Column joint structure

Abstract

To provide a column joint structure having a slender solid column installed in a rahmen frame structure.SOLUTION: A column joint structure 24 comprises: a steel solid column 22 on a lower end surface of which a convex spherical part 46 is formed so as to project outward in an axial direction; and a joint member 26 in an upper part of which a concave spherical part 48 is formed so as to recess inward in the axial direction and on which the convex spherical part 46 slidably and spherically contacts, and also to which legs 28 of the solid column 22 are jointed as well as on a side part of which beams 16, 20 are solidly jointed.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a column joint structure. [Background technology]

[0002] Some buildings are constructed with rigid frame structures in which beams are rigidly connected to columns (see, for example, Patent Document 1). On the other hand, thin, solid steel columns (for example, solid wood columns) are sometimes installed in the frames that make up the building, taking design into consideration. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-196698 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when such solid columns are installed in a rigid frame, excessive bending moments are generated at the legs and heads of the solid columns that are rigidly connected to the rigid frame, making it difficult to make the solid columns thin.

[0005] In consideration of the above, the present invention aims to install thin solid columns in a rigid frame structure. [Means for solving the problem]

[0006] The column joint structure of the first embodiment comprises a solid steel column having a convex spherical portion formed on its lower end surface or upper end surface that is convex axially outward, and a joint member having a concave spherical portion formed on its upper or lower surface that is concave axially inward and with which the convex spherical portion makes slidable spherical contact, to which the leg or head of the solid column is connected and to which a beam is rigidly joined on the side.

[0007] According to the column connection structure of the first aspect, the convex spherical portion is in slidable spherical contact with the concave spherical portion, so that only the axial force acts on the leg or head of the solid column, suppressing the occurrence of bending moment and allowing the solid column to be made thinner. This improves the design of the solid column. Therefore, by connecting the leg or head of the solid column to the upper or lower part of the joint member whose side is rigidly joined to the beam, a slender solid column can be installed in a rigid frame structure.

[0008] The column connection structure of the second aspect is the column connection structure of the first aspect, in which the head or foot of a steel pipe column is rigidly connected to the lower or upper part of the joint member located axially opposite the upper or lower part of the joint member to which the solid column is connected, and the solid column is formed in a cylindrical shape with an outer diameter smaller than that of the steel pipe column.

[0009] According to the column connection structure of the second aspect, the design of the solid column can be improved by forming the solid column into a cylindrical shape. In addition, the joint member can connect a steel pipe column with a large outer diameter to a solid column with a small outer diameter.

[0010] The column connection structure of the third aspect is the column connection structure of the second aspect, in which the main body of the joint member has an outer diameter that increases from the side where the solid column is connected to the side where the steel pipe column is rigidly connected.

[0011] According to the column connection structure of the third aspect, the outer dimensions of the main body of the joint member are made larger as they move from the side where the solid column is connected to the side where the steel pipe column is rigidly connected, thereby allowing axial force to be smoothly transferred from the solid column to the steel pipe column, or from the steel pipe column to the solid column. [Effects of the Invention]

[0012] Since the present invention has the above-mentioned configuration, it is possible to install thin solid columns in a rigid frame structure. [Brief explanation of the drawings]

[0013] [Figure 1]FIG. 1 is an elevation view of a building according to an embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. [Figure 3] FIG. 1 is an elevation view showing a column joint structure according to one embodiment. [Figure 4] FIG. 2 is an enlarged view showing a column joint structure according to an embodiment. [Figure 5] 5 is a cross-sectional view taken along line 5-5 in FIG. 4. [Figure 6] 6 is a cross-sectional view taken along line 6-6 in FIG. 4. [Figure 7] 7 is a cross-sectional view taken along line 7-7 in FIG. 4. [Figure 8] FIG. 1 is an elevation view showing a column joint structure according to one embodiment. [Figure 9] FIG. 1 is an elevation view showing a column joint structure according to one embodiment. [Figure 10] FIG. 2 is an enlarged view showing a column joint structure according to an embodiment. [Figure 11] FIG. 2 is an enlarged view showing a column joint structure according to an embodiment. [Figure 12] FIG. 1 is an elevation view showing a column joint structure according to one embodiment. [Figure 13] FIG. 2 is an enlarged view showing a column joint structure according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, a column joint structure according to one embodiment will be described with reference to the drawings. Note that arrow X shown in each drawing indicates the span direction of the building 10 (hereinafter referred to as "span direction X"), arrow Y indicates the row direction of the building 10 (hereinafter referred to as "row direction Y") perpendicular to arrow X in a plan view, and arrow Z indicates the height direction of the building 10 (hereinafter referred to as "height direction Z").

[0015] (building) As shown in the elevation view of Figure 1, building 10 is constructed with a rigid frame structure 12. Rigid frame structure 12 is constructed with precast concrete column members 14 and steel-framed beam members 16, 18, and 20 formed from H-shaped steel, and the ends of beam members 16, 18, and 20 are rigidly joined to column member 14 to form a rigid frame structure.

[0016] As shown in FIG. 1 and FIG. 2, which is a cross-sectional view taken along line 2-2 of FIG. 1, four column members 22 as solid columns are installed as center columns in the same planar arrangement inside the building 10 on the fourth to sixth floors of the building 10.

[0017] The column member 22 is a solid column that is a solid steel member and is formed in a cylindrical shape. In this example, the column member 22 is a solid column with an outer diameter of 250 mm. As shown in FIG. 4, a convex spherical portion 46 that is convex outward in the axial direction (height direction Z) of the column member 22 is formed on the lower end surface of the column member 22. As shown in FIG. 10, a convex spherical portion 80 that is convex outward in the axial direction (height direction Z) of the column member 22 is formed on the upper end surface of the column member 22.

[0018] As shown in Figure 1, the leg 28 of the column member 22 arranged on the fourth floor of the building 10 is connected to the upper part of the joint member 26 that constitutes the rigid frame structure 12 by a column joint structure 24 (see Figure 3). The head 74 of the column member 22 arranged on the fourth floor of the building 10 is connected to the lower part of the joint member 76 that constitutes the rigid frame structure 12 by a column joint structure 72 (see Figure 9).

[0019] As shown in Figure 1, the leg 28 of the column member 22 arranged on the fifth floor of the building 10 is connected to the upper part of the joint member 76 that constitutes the rigid frame 12 by a column joint structure 102 (see Figure 9). The head 74 of the column member 22 arranged on the fifth floor of the building 10 is connected to the lower part of the joint member 76 that constitutes the rigid frame 12 by a column joint structure 110 (see Figure 9).

[0020] As shown in Figure 1, the leg 28 of the column member 22 arranged on the sixth floor of the building 10 is connected to the upper part of the joint member 76 constituting the rigid frame 12 by a column joint structure 112 (see Figure 9). The head 74 of the column member 22 arranged on the sixth floor of the building 10 is connected to the lower part of the joint member 116 constituting the rigid frame 12 by a column joint structure 114 (see Figure 12).

[0021] (Column joint structure) As shown in the elevation view of Figure 3, the column joint structure 24 is composed of a column member 22 and a joint member 26. The joint member 26 rigidly joins the ends of the beam members 16 and 20, which act as beams, to the side thereof via bracket members 34, thereby forming the rigid frame 12.

[0022] A head 32 of a column member 30 serving as a steel pipe column is rigidly joined to the lower part of the connection member 26, which is located on the axially opposite side (in the height direction Z) from the upper part of the connection member 26 to which the leg part 28 of the column member 22 is connected. The column member 30 is made of a square steel pipe. In this example, the column member 30 is a square steel pipe with a rectangular cross section of 450 mm x 450 mm and a thickness of 45 mm. In other words, the column member 22 serving as a solid column has a smaller outer diameter than the column member 30 serving as a steel pipe column.

[0023] As shown in the elevation view of Figure 4, the joint member 26 has a main body 36 as the main body, an upper plate 38, a lower plate 40, and a side plate 42, which are integrally formed. The joint member 26 is made of cast steel.

[0024] As shown in Figure 4, Figure 5, which is a cross-sectional view taken along line 5-5 of Figure 4, and Figure 6, which is a cross-sectional view taken along line 6-6 of Figure 4, the main body 36 is a solid member having a square pyramid shape. The outer shape of the main body 36 increases from the upper side where the leg 28 of the pillar member 22 is connected to the lower side where the head 32 of the pillar member 30 is rigidly joined. A square pyramid-shaped cavity 44 is formed in the center of the plane of the lower part of the main body 36. This cavity 44 reduces the weight and material required of the joint member 26.

[0025] The upper plate 38 is made of a plate-like member with a stepped, substantially square planar shape and is provided on the upper surface of the main body 36. The side plate 42 is made of a plate-like member with a substantially triangular side shape and is provided on each side of the main body 36 so as to protrude from the main body 36 in all four directions. The lower plate 40 is made of a plate-like member with a stepped, substantially square planar shape and is provided on the lower surface of the main body 36.

[0026] As shown in Figures 4 and 5, a concave spherical portion 48, which is concave inward in the axial direction (height direction Z) of the joint member 26, is formed on the upper surface of the upper plate portion 38 serving as the upper portion of the joint member 26. A convex spherical portion 46 formed on the lower end surface of the leg portion 28 of the pillar member 22 is placed in slidable spherical contact with the upper surface of this concave spherical portion 48, thereby connecting the leg portion 28 of the pillar member 22 to the joint member 26. In this example, to improve the sliding properties of the convex spherical portion 46 relative to the upper surface of the concave spherical portion 48, the upper surface of the concave spherical portion 48 and the lower surface of the convex spherical portion 46 are smoothly finished so that the surface roughness falls within a control value. In addition, the spherical radii of the concave spherical portion 48 and the convex spherical portion 46 are the same.

[0027] As shown in Figure 4 and Figure 7, which is a cross-sectional view taken along line 7-7 of Figure 4, a plurality of stopper members 50 (eight in this example) are provided on the upper surface of the upper plate portion 38 of the joint member 26 so as to surround the pillar member 22. The stopper members 50 are made of steel plates with trapezoidal side shapes, and there is a gap between the inner end face 52 and the outer peripheral surface 54 of the pillar member 22. These stopper members 50 can prevent the convex spherical portion 46 of the pillar member 22 from coming off the concave spherical portion 48 of the joint member 26 in the event of an earthquake or the like.

[0028] As shown in Fig. 4, the end of a bracket member 34 made of an H-shaped steel is rigidly joined to the side of the joint member 26. Specifically, the end face of the upper flange 34A of the bracket member 34 is joined to the end face of the upper plate portion 38 by butt welding. The end face of the web 34B of the bracket member 34 is joined to the end face of the side plate portion 42 by butt welding. The end face of the lower flange 34C of the bracket member 34 is joined to the end face of the lower plate portion 40 by butt welding. As a result, the end of the bracket member 34 is rigidly joined to the side of the joint member 26.

[0029] As shown in Fig. 3, the ends of the webs 16B, 20B of the beam members 16, 20 are bolted to the end of the web 34B of the bracket member 34 using a splice plate 62 with bolts 64 and nuts (not shown). The end faces of the upper flanges 16A, 20A of the beam members 16, 20 are joined to the end face of the upper flange 34A of the bracket member 34 by on-site butt welding. The end faces of the lower flanges 16C, 20C of the beam members 16, 20 are joined to the end face of the lower flange 34C of the bracket member 34 by on-site butt welding. As a result, the ends of the beam members 16, 20 are rigidly joined to the joint member 26 via the bracket member 34.

[0030] As shown in Fig. 4, the upper end face of the head 32 of the column member 30 is rigidly joined by butt welding to the lower plate portion 40 serving as the lower portion of the joint member 26. As shown in the elevation view of Fig. 8, the column member 30 is joined to and supported by a column member 14 installed on the second floor of the building 10, with the foot 70 of the column member 30 being embedded in the head 68 of the column member 14.

[0031] As shown in the elevation view of Figure 9, the column joint structure 72 is composed of a column member 22 and a joint member 76. The ends of the beam members 16 and 20 are rigidly joined to the side of the joint member 76 via bracket members 78, thereby forming the rigid frame 12.

[0032] The joint member 76 has a main body 82 as the main body, an outer diaphragm 84, and an outer diaphragm 86, which are integrally formed. The main body 82 is a solid member made of steel and formed in a cylindrical shape. In this example, the main body 82 is a cylindrical solid member with an outer diameter of 250 mm.

[0033] The outer diaphragm 84 is provided above the main body portion 82 to surround the main body portion 82, with the upper end of the main body portion 82 protruding upward from the upper surface of the outer diaphragm 84. The outer diaphragm 86 is provided below the main body portion 82 to surround the main body portion 82, with the lower end of the main body portion 82 protruding downward from the lower surface of the outer diaphragm 86.

[0034] As shown in the enlarged view of Figure 10, the lower end of the main body 82, which forms the lower part of the joint member 76, is formed with a spherical concave spherical portion 88 that is concave inward in the axial direction (height direction Z) of the joint member 76. This concave spherical portion 88 is placed in slidable spherical contact with the upper surface of a convex spherical portion 80 formed on the upper end surface of the head 74 of the pillar member 22, thereby connecting the head 74 of the pillar member 22 to the joint member 76. In this example, to improve the sliding properties of the concave spherical portion 88 relative to the upper surface of the convex spherical portion 80, the upper surface of the convex spherical portion 80 and the lower surface of the concave spherical portion 88 are smoothly finished so that the surface roughness falls within a control value. In addition, the spherical radii of the convex spherical portion 80 and the concave spherical portion 88 are the same.

[0035] 9 and 10, a plurality of stopper members 90 (eight in this example) are provided on the underside of the outer diaphragm 86 of the joint member 76 so as to surround the pillar member 22. The stopper members 90 are made of steel plates with trapezoidal side faces, and there is a gap between the inner end face 92 and the outer peripheral surface 54 of the pillar member 22. These stopper members 90 can prevent the convex spherical portion 80 of the pillar member 22 from coming off the concave spherical portion 88 of the joint member 76 in the event of an earthquake or the like.

[0036] As shown in Figure 9, an end of a bracket member 78 made of H-shaped steel is rigidly joined to the side of the joint member 76. Specifically, the end face of the upper flange 78A of the bracket member 78 is joined to the end face of the outer diaphragm 84 by butt welding. The end face of the web 78B of the bracket member 78 is joined to the outer peripheral surface 142 of the main body 82 by butt welding. The end face of the lower flange 78C of the bracket member 78 is joined to the end face of the outer diaphragm 86 by butt welding. As a result, the end of the bracket member 78 is rigidly joined to the side of the joint member 76.

[0037] As shown in Fig. 9, the ends of the beam members 16 and 20 are bolted to the ends of the web 78B of the bracket member 78 using a splice plate 100 with bolts 64 and nuts (not shown). Furthermore, the end faces of the upper flanges 16A and 20A of the beam members 16 and 20 are butt-welded to the end faces of the upper flange 78A of the bracket member 78. Furthermore, the end faces of the lower flanges 16C and 20C of the beam members 16 and 20 are butt-welded to the end faces of the lower flange 78C of the bracket member 78. As a result, the ends of the beam members 16 and 20 are rigidly joined to the joint member 76 via the bracket member 78. As shown in Fig. 9, a column-to-column joint structure 102 is comprised of a column member 22 and a joint member 76.

[0038] As shown in the enlarged view of Figure 11, the upper part of the main body 82, which serves as the upper part of the joint member 76, is formed with a spherical concave spherical portion 104 that is concave inward in the axial direction (height direction Z) of the joint member 76. The convex spherical portion 46 formed on the lower end surface of the leg portion 28 of the pillar member 22 is placed in slidable spherical contact with the upper surface of this concave spherical portion 104, thereby connecting the leg portion 28 of the pillar member 22 to the joint member 76. In this example, to improve the sliding properties of the convex spherical portion 46 relative to the upper surface of the concave spherical portion 104, the upper surface of the concave spherical portion 104 and the lower surface of the convex spherical portion 46 are smoothly finished so that the surface roughness falls within a control value. Furthermore, the spherical radii of the concave spherical portion 104 and the convex spherical portion 46 are the same.

[0039] 9 and 11, a plurality of stopper members 106 (eight in this example) are provided on the upper surface of the outer diaphragm 84 of the joint member 76 so as to surround the pillar member 22. The stopper members 106 are made of steel plates with trapezoidal side faces, and there is a gap between the inner end face 108 and the outer peripheral surface 54 of the pillar member 22. These stopper members 106 can prevent the convex spherical portion 46 of the pillar member 22 from coming off the concave spherical portion 104 of the joint member 76 in the event of an earthquake or the like.

[0040] The column joint structure 110 has the same configuration as the column joint structure 72, and therefore a description thereof will be omitted. The column joint structure 112 has the same configuration as the column joint structure 102, and therefore a description thereof will be omitted.

[0041] As shown in the elevation view of Figure 12, the column joint structure 114 is composed of a column member 22 and a joint member 116. The joint member 116 rigidly joins the ends of beam members 66, 18 as beams to the side thereof via bracket members 118 to form the rigid frame 12. The joint member 116 has a main body 120 as the main body, outer diaphragms 122, 124, and a base 126, which are integrally formed.

[0042] The main body 120 is made of a square steel pipe. In this example, the main body 120 is a square steel pipe with a rectangular cross section of 300 mm x 300 mm and a thickness of 12 mm. This square steel pipe is provided so as to protrude upward from the upper surface of the outer diaphragm 122, and this protruding part forms a column member 146 installed on the seventh floor of the building 10. As shown in FIG. 1, the end of a beam member 20 serving as a beam is rigidly joined to the head of the column member 146.

[0043] As shown in Fig. 12, the outer diaphragm 122 is provided on the upper part of the main body 120 so as to surround the main body 120. The outer diaphragm 124 is provided on the lower part of the main body 120 so as to surround the main body 120. The base 126 is a solid member made of steel and is formed in a cylindrical shape. In this example, the base 126 is a cylindrical solid member with an outer diameter of 250 mm.

[0044] As shown in the enlarged view of Figure 13, a spherical concave spherical portion 128 that is concave inward in the axial direction (height direction Z) of the joint member 116 is formed on the lower end surface of the base portion 126, which serves as the lower part of the joint member 116. This concave spherical portion 128 is placed in slidable spherical contact with the upper surface of the convex spherical portion 80 formed on the upper end surface of the head portion 74 of the pillar member 22, thereby connecting the head portion 74 of the pillar member 22 to the joint member 116. In this example, to improve the sliding properties of the concave spherical portion 128 relative to the upper surface of the convex spherical portion 80, the upper surface of the convex spherical portion 80 and the lower surface of the concave spherical portion 128 are smoothly finished so that the surface roughness falls within a control value. In addition, the spherical radii of the convex spherical portion 80 and the concave spherical portion 128 are the same.

[0045] 12 and 13, a plurality of stopper members 130 (eight in this example) are provided on the underside of the outer diaphragm 124 of the joint member 116 so as to surround the pillar member 22. The stopper members 130 are made of steel plates with trapezoidal side faces, and there is a gap between the inner end face 132 and the outer peripheral surface 54 of the pillar member 22. These stopper members 130 can prevent the convex spherical portion 80 of the pillar member 22 from coming off the concave spherical portion 128 of the joint member 116 in the event of an earthquake or the like.

[0046] As shown in Figure 12, an end of a bracket member 118 made of H-shaped steel is rigidly joined to the side of the joint member 116. Specifically, the end face of an upper flange 118A of the bracket member 118 is joined to the end face of the outer diaphragm 122 by butt welding. The end face of a web 118B of the bracket member 118 is joined to the outer peripheral surface 140 of the main body 120 by butt welding. The end face of a lower flange 118C of the bracket member 118 is joined to the end face of the outer diaphragm 124 by butt welding. As a result, the end of the bracket member 118 is rigidly joined to the side of the joint member 116.

[0047] The ends of the beam members 66, 18 are bolted to the end of the bracket member 118 with bolts 64 and nuts (not shown) using a splice plate 144. Furthermore, the end faces of the upper flanges 66A, 18A of the beam members 66, 18 are butt-welded to the end face of the upper flange 118A of the bracket member 118. Furthermore, the end faces of the lower flanges 66C, 18C of the beam members 66, 18 are butt-welded to the end face of the lower flange 118C of the bracket member 118. As a result, the ends of the beam members 66, 18 are rigidly joined to the joint member 116 via the bracket member 118.

[0048] (effect) Next, the effects of this embodiment will be described.

[0049] According to the column connection structure 24 of this embodiment, as shown in Figures 3 and 4, the convex spherical portion 46 of the column member 22 is in slidable spherical contact with the upper surface of the concave spherical portion 48 of the joint member 26. This allows only axial force to act on the leg portion 28 of the column member 22, thereby suppressing the occurrence of bending moment in the leg portion 28 of the column member 22. As a result, the column member 22 as a solid column can be made thinner, improving the design.

[0050] Therefore, by connecting the leg 28 of the column member 22, which serves as a solid column, to the top of the joint member 26, to which the beam members 16 and 20 are rigidly joined at the sides, a thin solid column (column member 22) can be installed within the rigid frame structure 12.

[0051] Furthermore, according to the column connection structure 24 of this embodiment, the column member 22 as a solid column is formed into a cylindrical shape as shown in Fig. 3, thereby improving the design of the column member 22 as a solid column. Furthermore, the joint member 26 can connect the column member 30 as a steel pipe column with a large outer diameter to the column member 22 as a solid column with a small outer diameter.

[0052] Furthermore, according to the column joint structure 24 of this embodiment, by using the column member 22 as a solid column as a solid wood column, it is possible to configure the column member 22 with a large cross section relative to the external size, as shown in Figure 3. Therefore, the column member 22 as a solid column can be made into a column member with high axial strength relative to the external size.

[0053] 4, according to the column connection structure 24 of this embodiment, the outer diameter of the main body 36 of the joint member 26 increases from the upper side where the leg 28 of the column member 22 as a solid column is connected to the lower side where the head 32 of the column member 30 as a steel pipe column is rigidly connected. This allows the axial force to be smoothly transferred from the column member 22 to the column member 30.

[0054] Furthermore, according to the column connection structures 72, 110 of this embodiment, as shown in Fig. 10, the concave spherical portion 88 of the joint member 76 is in slidable spherical contact with the upper surface of the convex spherical portion 80 of the column member 22. This allows only axial force to act on the head portion 74 of the column member 22, thereby suppressing the occurrence of bending moment in the head portion 74 of the column member 22. As a result, the column member 22 as a solid column can be made thinner, improving the design.

[0055] Furthermore, according to the column connection structures 102, 112 of the present embodiment, as shown in Fig. 11, the convex spherical portion 46 of the column member 22 comes into slidable spherical contact with the upper surface of the concave spherical portion 104 of the joint member 76. This allows only axial force to act on the leg portion 28 of the column member 22, thereby suppressing the occurrence of bending moment in the leg portion 28 of the column member 22. As a result, the column member 22 as a solid column can be made thinner, improving the design.

[0056] Furthermore, according to the column joint structures 72, 102, 110, 112, and 114 of this embodiment, the column member 22 as a solid column can be formed into a cylindrical shape, as shown in Figures 3, 9, and 12, thereby improving the design of the column member 22 as a solid column.

[0057] Furthermore, according to the column joint structures 72, 102, 110, 112, 114 of the present embodiment, by using the column member 22 as a solid column as a solid wood column, it is possible to configure the column member 22 with a large cross section relative to the external size, as shown in Figures 3, 9 and 12. Therefore, the column member 22 as a solid column can be made into a column member with high axial strength relative to the external size.

[0058] (Variation) Next, a modification of the above embodiment will be described.

[0059] In the above embodiment, as shown in Fig. 3, an example has been shown in which the column member 22 as a solid column is a solid column made of steel, but the column member 22 may be any solid member. For example, the column member 22 may be a column member of CFT construction (Concrete Filled Steel Tube structure). Furthermore, although an example has been shown in which the column member 22 as a solid column is cylindrical, the column member 22 may be a column member of another shape. For example, the column member 22 may be a column member of a square pillar shape.

[0060] In the above embodiment, as shown in Figures 3 and 12, an example was shown in which the column members 30 and 146 as steel pipe columns were made of square steel pipes, but the column members 30 and 146 may be made of steel pipes of other shapes. For example, the column members 30 and 146 may be made of circular steel pipes.

[0061] Furthermore, in the above embodiment, as shown in Figure 3, an example was shown in which the leg 28 of the column member 22 as a solid column is connected to the upper part of the joint member 26, and the head 32 of the column member 30 as a steel pipe column is rigidly joined to the lower part of the joint member 26, but this configuration is not limited to this.

[0062] For example, the head 74 of the column member 22 as a solid column may be connected to the lower part of the joint member 26, and the leg 70 of the column member 30 as a steel pipe column may be rigidly joined to the upper part of the joint member 26. In this case, a concave spherical portion that is concave toward the inside of the axial direction of the joint member 26 and rests in slidable spherical contact on the upper surface of the convex spherical portion 80 of the column member 22 is formed in the lower part of the joint member 26. Then, the leg 70 of the column member 30 is rigidly joined to the upper part of the joint member 26. In addition, the shape of the main body 36 of the joint member 26 is such that the outer diameter increases from the lower side where the column member 22 is connected to the upper side where the column member 30 is rigidly joined.

[0063] In the above embodiment, as shown in Fig. 1, an example was shown in which the rigid frame structure 12 constituting the building 10 was configured with precast concrete column members 14 and steel-framed beam members 16, 18, 20 formed from H-shaped steel, but this configuration is not limitative. For example, the rigid frame structure 12 may be configured with column members and beam members of other structures such as reinforced concrete, steel-reinforced concrete, or CFT (Concrete Filled Steel Tube) construction.

[0064] Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modified examples may be used in appropriate combination, and it goes without saying that the present invention can be implemented in various forms as long as it does not deviate from the gist of the present invention. [Explanation of symbols]

[0065] 16, 18, 20, 66 Beam member (beam) 22 Column member (solid column) 24, 72, 102, 110, 112, 114 Column joint structure 26, 76, 116 Joint members 28 Legs 30 Column member (steel pipe column) 32, 74 head 36 Main body (main body) 46, 80 Convex spherical part 48, 88, 104, 128 Concave spherical part

Claims

1. a steel solid column having a convex spherical portion formed on a lower end surface or an upper end surface thereof, the convex portion being convex outward in the axial direction; a joint member having a concave spherical portion formed at its upper or lower part, the concave spherical portion being concave inward in the axial direction and with which the convex spherical portion is in slidable spherical contact, the leg or head of the solid column being connected, and the beam being rigidly joined to its side; a plurality of stopper members provided on the joint member, arranged at intervals in the circumferential direction of the solid column around the leg portion or the head portion of the solid column, and arranged with a gap between them and the outer peripheral surface of the solid column; A column-jointed structure.

2. A steel solid column having a convex spherical portion formed on the lower end surface or the upper end surface that is convex outward in the axial direction; a joint member having a concave spherical portion formed at its upper or lower part, the concave spherical portion being concave inward in the axial direction and with which the convex spherical portion is in slidable spherical contact, the leg or head of the solid column being connected, and the beam being rigidly joined to its side; and A column connection structure in which the head or foot of a steel pipe column is rigidly connected to the lower or upper part of the joint member, which is located axially opposite to the upper or lower part of the joint member to which the solid column is connected, and the solid column is formed in a cylindrical shape with an outer diameter smaller than that of the steel pipe column.

3. 3. A column connection structure according to claim 2, wherein the body of the joint member has an outer diameter that increases from the side where the solid column is connected to the side where the steel pipe column is rigidly connected.

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