JP6298271B2 - Column-beam connection structure and reinforcing member - Google Patents

Description

  The present invention relates to a column-to-beam joint structure for joining beams having different heights to a steel pipe column.

  Conventionally, in a structure using a steel pipe column, a beam made of H-shaped steel may be joined. When joining a column and a beam, a through diaphragm corresponding to the height of the flange portion of the beam is provided in order to efficiently transmit stress from the beam to the column at the junction. The through diaphragm is a plate-like member joined between the pillars by welding or the like. Usually, the flange portion of the beam is welded against the side of the through diaphragm.

  However, the size (height) of the beam joined to the column may not be the same in all directions. For example, a beam having a low height may be joined only in one direction. In such a case, at least one of the upper and lower flange portions of the beam cannot be joined to the through diaphragm to which the other beam is joined.

  Therefore, in order to join such beams having different heights, it is necessary to join an inner diaphragm inside the column.

  Also, as a column beam connection structure for joining beams having different heights, one flange portion of the beam is joined to one diaphragm, and the beam is interposed between the other flange portion of the beam and the other diaphragm. There is a beam bonding structure in which a bonding member is bonded and stress transmission is performed between the beam and the diaphragm via the beam bonding member (Patent Document 1).

JP 2012-207515 A

  However, the work of providing the inner diaphragm inside the column has a problem that the welding amount is large and workability is poor. Further, in the structure described in Patent Document 1, when a sufficient space cannot be secured between the beam and the diaphragm, the beam joining member cannot be joined.

  The present invention has been made in view of such a problem. When joining beams having different heights to a column, a member such as a diaphragm is not joined to the inside of the column, and a gap between the beam and the diaphragm is obtained. An object of the present invention is to provide a column-to-beam joint structure that can be applied even when the width of the column is narrow.

  In order to achieve the above-described object, a first aspect of the present invention is a junction structure of a column and a beam, the column having a substantially rectangular cross-sectional outer shape, a pair of diaphragms formed on the column, A first beam to which each flange portion is bonded to the diaphragm, a second beam having a height different from that of the first beam and bonded to the column in a direction different from the first beam, and an outer surface of the column A reinforcing member to be joined, wherein the reinforcing member is perpendicular to a first joining portion joined to a surface of the column to which the second beam is joined, and a surface to which the second beam is joined. A second joint portion joined to a flat surface is formed in a substantially L shape perpendicularly, and one flange portion of the second beam is joined to one of the diaphragms, and the other flange of the second beam The portion is joined to the outer surface of the column and a pair of the reinforcements on both sides of the column so as to sandwich the second beam It is a joining structure of a column and a beam characterized in that members are joined. It is preferable that the corner portion of the column is formed by a curved surface portion, and an inner surface side between the first joint portion and the second joint portion is a concave curved surface portion.

  The reinforcing member has a convex portion formed in a direction perpendicular to both the forming direction of the first joint portion and the forming direction of the second joint portion, and the concave curved surface portion is continuous on the inner surface of the convex portion. And at least one end in the width direction of the second beam protrudes from the curved surface portion of the column, and at the height of the other flange portion of the second beam, the convex portion The reinforcing member may be joined to the column and the second beam while being inserted into a gap between the curved surface portion and the other flange portion.

  The width of the second beam may be narrower than the width of the column, and the second beam may be joined eccentrically to the column in the width direction.

  The radius of curvature of the concave curved surface portion is preferably smaller than the radius of curvature of the curved surface portion.

  According to the first invention, since the reinforcing member is joined to the column 5 in the vicinity of the joint portion of the beam, the column can be efficiently reinforced against stress from the beam. In addition, since the reinforcing member is joined to the outside of the column, the work can be performed only outside the column. Therefore, the workability of joining the beam to the column is excellent. Further, since the reinforcing member is joined to both sides of the column to which the beam is joined, it can be easily applied even when the distance between the flange portion of the beam and the diaphragm is short.

  In addition, the convex portion of the reinforcing member is inserted into the gap between the side end of the flange of the beam and the corner (curved surface) of the column, so that stress from the beam can be reliably transmitted to the column. . Such a structure is particularly effective when the beam is joined eccentrically to the column.

  Further, by making the curvature radius of the concave curved surface portion of the inner surface of the convex portion smaller than the curvature radius of the curved surface portion of the corner portion of the column, no gap is formed between the tip portion of the convex portion and the column. .

A second invention is a reinforcing member used in a joint structure between a column and a beam, and includes a first joint portion joined to one surface of the pillar, and a first joint joined to a surface perpendicular to the one surface. and 2 joint, are vertically formed in a substantially L shape, wherein the inner surface is the concave surface portion der is, formation direction of the second joined section and the between the first joined section and the second joined section in a direction perpendicular to both the formation direction of the first joint portion, a convex portion is formed on the inner surface of the convex portion, the concave surface portion are continuously formed is a reinforcing member, characterized in Rukoto.

  The convex portions may be provided in directions opposite to each other with respect to the second joint portion.

  According to the second invention, it is possible to efficiently reinforce the vicinity of the joint between the column and the beam, and it is possible to perform the work only outside the column. Therefore, the workability of joining the beam to the column is excellent.

  In addition, since the convex part of the reinforcing member can be inserted into the gap between the side end of the flange part of the beam and the corner part (curved surface part) of the column, the stress from the beam can be reliably transmitted to the column. it can. Moreover, it can be used for any direction by forming such a convex part on both sides.

  According to the present invention, when joining beams having different heights to a column, the column and the beam can be applied without joining a member such as a diaphragm inside the column and even when the gap between the beam and the diaphragm is narrow. And the like can be provided.

The perspective view which shows the junction structure 1 of a column and a beam. 1 is an elevation view showing a column-to-beam joint structure 1. FIG. The perspective view which shows the reinforcement member 13. FIG. It is a figure which shows the junction structure 1 of a column and a beam, and is the sectional view on the AA line of FIG. FIG. 5 is an enlarged view in the vicinity of a curved surface portion 7 of a column 5, and is an enlarged view of a B portion in FIG. 4. The perspective view which shows the reinforcement member 13a. The elevation view which shows the junction structure 1a of a column and a beam. It is a figure which shows the junction structure 1a of a pillar and a beam, and is CC sectional view taken on the line of FIG. FIG. 9 is an enlarged view of the vicinity of the curved surface portion 7 of the column 5, and is an enlarged view of a D portion in FIG. 8.

  Hereinafter, a column-to-beam joint structure 1 according to an embodiment of the present invention will be described. FIG. 1 is a perspective view showing a joint structure 1 between a column and a beam, and FIG. 2 is a diagram seen from the beam 9b side. The pillar-to-beam joint structure 1 is a structure in which a plurality of beams 9 a and 9 b are joined to a pillar 5.

  The column 5 is a hollow rectangular steel pipe column having a substantially rectangular cross-sectional outer shape, and the beams 9a and 9b are H-shaped steel. The beam 9a and the beam 9b have different beam heights. 1 shows an example in which the beam 9a is formed in one direction of the column 5 and the beam 9b is formed in a direction facing the column 9; however, the present invention is not limited to this, and the beam 9a or the beam 9b is not limited thereto. May be provided in a plurality of directions.

  A pair of diaphragms 3 a and 3 b are joined to the column 5. The diaphragms 3 a and 3 b are through-diaphragms that protrude outward from the column 5. The diaphragms 3a and 3b are provided above and below the pillar 5 with a predetermined interval.

  The ends of the upper and lower flange portions of the beam 9a as the first beam are joined to the diaphragms 3a and 3b by welding, respectively. That is, the installation interval of the diaphragms 3a and 3b coincides with the flange portion interval of the beam 9a. Therefore, the stress from the beam 9a can be reliably transmitted to the column.

  The end of the upper flange portion 11a of the beam 9b, which is the second beam, is joined to the upper diaphragm 3a by welding. Since the beam 9b is lower than the beam 9a, a gap is generated between the flange portion 11b below the beam 9b and the diaphragm 3b. For this reason, the flange portion 11 b is joined to the outer surface of the column 5.

  The reinforcing member 13 is joined to the outer surface of the column 5 on both sides of the beam 9b at a position where it does not interfere with the flange portion 11b of the beam 9b. For example, the reinforcing member 13 is joined to a slightly upper portion of the flange portion 11b of the beam 9b. The reinforcing member 13 is a substantially L-shaped member and is joined to the outer surface of the column 5. That is, the reinforcing member 13 is joined so as to straddle the surface of the column 5 to which the beam 9b is joined and the surface perpendicular thereto.

  FIG. 3 is a perspective view showing the reinforcing member 13. As described above, the reinforcing member 13 is a substantially L-shaped member. The reinforcing member 13 includes a joint portion 15a that is a first joint portion joined to the joint surface of the beam 9b, and a joint portion 15b that is a second joint portion joined to a plane perpendicular to the surface to which the beam 9b is joined. It consists of. That is, the junction 15a and the junction 15b are configured to be perpendicular to each other. A concave curved surface portion 17 is provided on the inner surface side of the intersecting portion of the joint portions 15a and 15b.

  The reinforcing member 13 is a steel material having excellent weldability, for example. In the joint portions 15a and 15b, a groove portion 19 is formed at a portion corresponding to a welded portion with the column 5 (welded portion 21 in FIG. 2).

  FIG. 4 is a cross-sectional view taken along line AA in FIG. As shown in FIG. 4, in the reinforcing member 13, the joint portions 15 a and 15 b are joined to the surface of the column 5. At this time, the joint portions 15a and 15b are joined to both sides of the beam 9b so as to sandwich the beam 9b. At this time, the joint portion 15a is joined to a surface to which the beam 9b of the column 5 is joined, and the joint portion 15b is joined to a surface perpendicular to the surface to which the beam 9b of the column 5 is joined.

  Note that the thickness of the reinforcing member 13 substantially matches the protruding margin of the diaphragm 3 b with respect to the column 5. Therefore, as shown in FIG. 4, the reinforcing member 13 is disposed so as to be within the projected area of the diaphragm 3 b in plan view. In addition, in each weld part, you may use the backing metal which abbreviate | omitted illustration as needed.

  FIG. 5 is an enlarged view of a portion B in FIG. The concave curved surface portion 17 on the inner surface of the reinforcing member 13 is disposed so as to face the curved surface portion 7. Here, the concave curved surface portion 17 on the inner surface side of the reinforcing member 13 has a shape corresponding to the curved surface portion 7 of the column 5, and the curvature radius R <b> 1 is slightly smaller than the curvature radius R <b> 2 of the curved surface portion 7 of the column 5. Is set. This is because the reinforcing member 13 does not come into contact with the pillar 5 when R1 is larger than R2. Therefore, a slight gap may be formed between the concave curved surface portion 17 and the curved surface portion 7.

  In this way, by providing the reinforcing member 13 on the outer surface of the column 5 and in the vicinity of the joint portion of the flange portion 11b of the beam 9b, the tensile or compressive stress from the beam 9b applied to the column 5 or the diaphragm 3a The column 5 can be reliably reinforced against a moment or the like starting from the joint portion. Further, even when the distance between the beam 9b (flange portion 11b) and the diaphragm 3b is narrow, the column 5 can be reliably reinforced.

  In the present embodiment, the beam 9b has a lower height than the beam 9a. However, the present invention can be applied even when the beam 9b is higher than the beam 9a. In this case, the reinforcing member 13 may be joined to the pillar 5 and the lower surface of the diaphragm 3b by cutting out the web of the beam 9b in a predetermined range.

  Further, the beam 9b and the reinforcing member 13 may be joined in a state where the top and bottom in FIG. In this case, the reinforcing member 13 may be provided in the lower part instead of the upper part of the flange part 11b.

  Next, a modification of the reinforcing member 13 is shown. In addition, in the following description, about the structure which show | plays the function similar to the reinforcement member 13 and the column-beam joining structure 1 using this, the code | symbol same as FIGS. .

  FIG. 6 is a perspective view showing the reinforcing member 13a. The reinforcing member 13a has substantially the same configuration as the reinforcing member 13, but differs in that the convex portion 23 is formed in the reinforcing member 13a (both directions substantially perpendicular to both the joining portions 15a and 15b). That is, the reinforcing member 13 is substantially L-shaped, whereas the reinforcing member 13a has a convex portion 23 protruding in both the upper and lower directions. The width and thickness of the joint portions 15a and 15b, the radius of curvature of the concave curved surface portion 17, and the like are the same as those of the reinforcing member 13.

  On the inner surface of the convex portion 23, a concave curved surface portion 17 provided on the inner surfaces of the joint portions 15a and 15b is continuously formed. That is, in the reinforcing member 13a, the concave curved surface portion 17 having a certain curvature is extended vertically. Therefore, the concave curved surface end portion 25 which is the distal end portion of the concave curved surface portion 17 in the portion protruding from the joint portions 15a and 15b has a cross-sectional shape that tapers toward the distal end. The convex portions 23 are provided on the upper and lower surfaces of the joint portion 15b in opposite directions, and are formed so that the concave curved surface end portion 25 faces the joint portion 15a side.

  FIG. 7 is a view (corresponding to FIG. 2) showing a column-beam joint structure 1a using a reinforcing member 13a in place of the reinforcing member 13, and FIG. 8 is a cross-sectional view taken along the line CC in FIG. is there. The reinforcing member 13a is joined to the outer surface of the column 5 in substantially the same manner as the reinforcing member 13, but the joining position of the beam 9b is different from the joining structure 1 of the column and the beam.

  In the column-beam joint structure 1 a, the beam 9 b is arranged eccentrically in the width direction of the column 5. That is, the beam 9b is in an eccentric position with respect to the column 5 so that one side surface (right side in the drawing) of the column 5 and one side surface (right side in the drawing) of the beam 9b (flange portion 11b) are aligned. Be placed.

  The convex portion 23 formed on the reinforcing member 13 a is arranged toward the longitudinal direction of the column 5. That is, the convex portion 23 is disposed along the corner portion (curved surface portion 7) of the column 5.

  FIG. 9 is an enlarged view of a portion D in FIG. As described above, the curved surface portion 7 is provided at the corner portion of the column 5. For this reason, when the side surface of the column 5 is aligned with the position of the side end of the beam 9 b, a gap is formed between the end of the beam 9 b (flange portion 11 b) and the curved surface portion 7 of the column 5. That is, one end in the width direction of the flange portion 11 b protrudes from the curved surface portion 7 of the column 5. The concave curved surface end portion 25 of the convex portion 23 is inserted into this gap.

  At this time, since the radius of curvature of the concave curved surface portion 17 is smaller than the radius of curvature of the curved surface portion 7, no gap is formed between the reinforcing member 13 a and the column 5. In this state, the convex portion 23 is welded and joined to the column 5 and the flange portion 11b.

  The height of the protrusion 23 (protrusion allowance from the joint 15b) is set in consideration of the distance from the position where the joints 15a and 15b are joined and the thickness of the flange 11b. That is, when the reinforcing member 13a is joined to the column 5, the height of the convex portion 23 is set so that the convex portion 23 can fill the entire thickness of the flange portion 11b.

  According to the second embodiment, an effect similar to that of the first embodiment can be obtained. Even when the beam 9b is decentered and joined, the gap between the curved surface portion 7 and the flange portion 11b at the corner of the column 5 is filled with the convex portion 23 (concave surface end portion 25). In addition, stress transmission between the beam 9b and the column 5 can be performed.

  In addition, although the convex part 23 was each provided in the both sides of the reinforcement member 13a, only any one may be sufficient. However, by forming the convex portions 23 on both sides, the reinforcing member 13a can be inverted and used, so that the same member can be used regardless of the eccentric direction of the beam 9b. For this reason, it is not necessary to manufacture and manage two types of reinforcing members.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

  For example, in the above-described embodiment, the curved surface portion 7 is formed in the corner portion of the column 5 and the concave curved surface portion 17 is formed in the reinforcing members 13 and 13a. However, the present invention is not limited to this. The planes of the joint portions 15a and 15b may be formed so as to be orthogonal to each other. In this case, the curved surfaces 7 are not formed at the corners of the pillar 5 so that the planes are orthogonal to each other. May be.

DESCRIPTION OF SYMBOLS 1, 1a ..... Column-to-beam joining structure 3a, 3b ......... Diaphragm 5 ......... Column 7 ......... Curved surface portion 9a, 9b ......... Beam 11a, 11b ......... Flange portion 13, 13a ... ... Reinforcing members 15a, 15b ......... Joint portion 17 ......... concave surface portion 19 ......... groove portion 21 ......... weld portion 23 ......... convex portion 25 ......... concave surface end

Claims (7)

It is a joint structure between a column and a beam,
A pillar having a substantially rectangular cross-section,
A pair of diaphragms formed on the pillars;
A first beam in which each flange portion is joined to the upper and lower diaphragms;
A second beam having a height different from that of the first beam and joined to the column in a direction different from the first beam;
A reinforcing member joined to the outer surface of the column;
Comprising
The reinforcing member is
A first joint portion joined to a surface of the column to which the second beam is joined and a second joint portion joined to a surface perpendicular to the surface to which the second beam is joined are substantially L-shaped. Formed vertically
One flange portion of the second beam is joined to one of the diaphragms,
The other flange portion of the second beam is joined to the outer surface of the column,
A joint structure of a pillar and a beam, wherein a pair of the reinforcing members are joined to both sides of the pillar so as to sandwich the second beam. The corner of the pillar is composed of a curved surface,
The column-to-beam junction structure according to claim 1, wherein an inner surface side between the first joint portion and the second joint portion is a concave curved surface portion. The reinforcing member has a convex portion formed in a direction perpendicular to both the formation direction of the second joint portion and the formation direction of the first joint portion,
The concave curved surface portion is continuously formed on the inner surface of the convex portion, and at least one end in the width direction of the second beam protrudes from the curved surface portion of the column,
In the state where the convex portion is inserted into the gap between the curved surface portion and the other flange portion at the height of the other flange portion of the second beam, the reinforcing member is connected to the column and the second beam. The column-to-beam junction structure according to claim 2, wherein the column and beam are joined to each other.   The column-beam connection structure according to any one of claims 2 and 3, wherein a radius of curvature of the concave curved surface portion is smaller than a radius of curvature of the curved surface portion. The width of the second beam is narrower than the width of the column,
The column-beam connection structure according to any one of claims 1 to 4, wherein the second beam is bonded to the column in an eccentric manner in a width direction. It is a reinforcing member used for the joint structure between a column and a beam,
A first joint portion joined to one surface of the column and a second joint portion joined to a surface perpendicular to the one surface are formed vertically in a substantially L shape,
Ri inner surface side concave surface portion der between the second joined section and the first joint portion,
A convex portion is formed in a direction perpendicular to both the forming direction of the second bonding portion and the forming direction of the first bonding portion,
Wherein the inner surface of the convex portion, the reinforcing member, wherein Rukoto the concave portions are continuously formed. The reinforcing member according to claim 6 , wherein the convex portions are provided in directions opposite to each other with respect to the second joint portion.

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