JP2018193676A - Junction structure of steel frame - Google Patents

Abstract

To provide a junction structure of a steel frame which increases an allowable load at a joint part between a column and a beam.SOLUTION: A junction structure 1 of a steel frame includes a column 2, a beam 3, and a vertical haunch 4. The column 2 extends along the column direction. The column 2 has a plurality of column portions 21 and a diaphragm 22. The beam 3 extends in the beam direction. The beam end 3a of the beam 3 is fixed to the column 2. The vertical haunch 4 is provided on the lower side of the beam 3 in the column direction. The vertical haunch 4 has a vertical haunch web 41 and a vertical haunch flange 43. The vertical haunch web 41 extends along a plane including a column direction and a beam direction and is arranged along a lateral direction that intersects the column direction and the beam direction. The vertical haunch flange 43 extends along a plane intersecting the column direction. The vertical haunch web 41 is fixed to the beam, and the vertical haunch flange 43 is fixed to the vertical haunch web 41 and fixed to the diaphragm 22.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a steel structure joint structure.

  Patent Documents 1 to 5 disclose a steel structure joint structure in which a beam is fixed to a column. In such a steel-framed joint structure, a single web that extends along a plane including the direction in which the column extends and the direction in which the beam extends is provided at the joint between the column and the beam.

JP 2004-257005 A JP 2004-169298 A JP 2002-356910 A JP 2002-201719 A JP-A-11-81460

  However, as a structure (for example, a building) in which such a steel-framed joint structure is used becomes large, it is desired to improve the allowable load at the joint between the column and the beam. In addition, it is desired that the joint portion can withstand various loads such as a periodic repetitive load (particularly a long cycle).

  Therefore, an object of the present invention is to provide a steel structure joint structure capable of improving the load resistance of a joint portion between a column and a beam.

  The steel structure joint structure according to an aspect of the present invention has a plurality of pillars and diaphragms, extends along a first direction, and extends along a second direction intersecting the first direction. A beam whose one end is fixed to the column, and a reinforcing portion which is provided on at least one side of the beam in the first direction and is fixed to the column and the beam. The reinforcing portion includes the first direction and the second direction. A plurality of first webs arranged along a third direction intersecting the first direction and the second direction, and extending along a plane intersecting the first direction. The first web includes a first end on the beam side of the first web in the first direction and a second end opposite to the first end in the first direction. The first end of each first web is fixed to the beam and the flange is connected to each first web. Is secured to the diaphragm is fixed to the second end of the probe.

  In this steel structure joint structure, a column and a reinforcing portion fixed to the beam are provided on at least one side of the beam in the first direction. For this reason, when the beam tries to bend by a load along the first direction, for example, the beam is supported by the column via the reinforcing portion. That is, the load applied to the reinforcing portion is transmitted to the pillar through the reinforcing portion. In this steel structure joint structure, since the reinforcing portion has a plurality of first webs, the load is transmitted to the pillar via each web. That is, the load is transmitted to the pillar while being distributed by the plurality of webs. Therefore, since the load transmitted from the beam to the column is not concentrated at one place, the maximum stress at the junction between the column and the beam is reduced. Thereby, as for the steel structure joining structure, the load resistance of a junction part improves.

  In the steel structure joint structure according to one aspect of the present invention, the beam has a reinforcing web extending in the first direction, and the reinforcing portion is a tip portion on the opposite side to the column of the reinforcing portion in the second direction. The reinforcing web may be provided at a position corresponding to the tip portion. When the beam is supported by the reinforcement, the beam receives a reaction force from the reinforcement. This reaction force can be greatest at a location where the beam is fixed to the tip of the reinforcing portion. According to this structure, since the reinforcing web is provided at a position corresponding to the tip portion, the beam can sufficiently counter the reaction force received from the reinforcing portion. Thereby, the load resistance of the joint portion is further improved.

  In the steel structure joint structure according to one aspect of the present invention, the first web further includes a third end portion opposite to the first web pillar in the second direction, and the reinforcing portion intersects the second direction. And a second web that extends along the surface of the first web and is secured to the third end of each first web. According to the 2nd web, the rigidity in the edge of a reinforcement part increases. Therefore, the load resistance of the joint is further improved.

  In the steel structure joint structure according to one aspect of the present invention, the flange may be formed integrally with a diaphragm corresponding to the flange. According to this configuration, the load resistance of the joint can be improved with a simpler configuration.

  The steel structure joint structure according to an aspect of the present invention further includes a reinforcing member extending along a plane including the first direction and the second direction, and the pillar is filled with a filler, The beam extends along a plane including the first direction and the second direction, and has a web whose one end is fixed to the column, and the reinforcing member has the web fixed inside the column. A plurality of through holes are formed in the reinforcing member so as to face the web, and the reinforcing member may be filled with a filler. According to this configuration, the reinforcing member is fixed to the inner surface of the column to which the web of the beam is fixed so as to face the web. For this reason, when the beam bends due to, for example, a load along the first direction, the reinforcing member also moves along with the deflection of the beam via the column. Therefore, the reinforcing member is buried in the filler, and the filler is also filled in the through hole of the reinforcing member. For this reason, the movement of the reinforcing member is restricted by the resistance of the filler. Thereby, the beam is supported by the reinforcing member. Therefore, according to the steel structure joint structure, the strength of the joint portion between the column and the beam is further improved.

  ADVANTAGE OF THE INVENTION According to this invention, the steel structure joining structure which can improve an allowable load in the junction part of a column and a beam can be provided.

It is a perspective view of the steel structure joining structure concerning one embodiment. FIG. 2 is a plan view of the steel structure joint structure of FIG. 1. FIG. 2 is a front view of the steel structure joint structure of FIG. 1. It is the elements on larger scale of FIG. FIG. 2 is a side view of the steel structure joint structure of FIG. 1. It is a figure explaining the effect of the steel structure joining structure of FIG. It is a figure which shows the modification of the steel structure joining structure of FIG. It is a figure which shows the modification of the steel structure joining structure of FIG. It is a figure which shows the modification of the steel structure joining structure of FIG. It is a figure which shows the modification of the steel structure joining structure of FIG. It is a figure which shows the modification of the steel structure joining structure of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 1, the steel-framed joint structure 1 includes a column 2, a beam 3, and a vertical hunch (reinforcing portion) 4. The pillar 2 extends, for example, along the vertical direction (first direction, Z-axis direction). Hereinafter, a direction in which the pillar 2 extends is referred to as a pillar direction. The beam 3 extends along a direction (second direction, X-axis direction) intersecting (here, orthogonal) to the column direction. Hereinafter, the direction in which the beam 3 extends is referred to as a beam direction. The beam 3 is fixed to the column 2. The vertical haunch 4 is provided at the joint between the column 2 and the beam 3. Hereinafter, each of the pillar 2, the beam 3, and the vertical haunch 4 will be described in detail.

  The column 2 includes a plurality of column parts 21, a diaphragm 22, and a gusset plate 23. The column portion 21 extends along the column direction. The column portion 21 has a quadrangular cylindrical shape with both ends opened in the column direction. The plurality of column portions 21 are arranged along the column direction.

  The diaphragm 22 is disposed between the column portions 21 adjacent to each other in the column direction. That is, the diaphragm 22 is sandwiched between the column portions 21 adjacent to each other in the column direction. The diaphragm 22 is fixed to the column portions 21 adjacent to each other. The diaphragm 22 has a plate shape. The diaphragm 22 extends along a plane (XY plane) that intersects (in this case, is orthogonal) in the column direction. The distance between the diaphragms 22 adjacent to each other in the column direction is about 700 mm.

  As shown in FIG. 2, the outer edge of the diaphragm 22 has a quadrangular shape when viewed from the column direction. The outer edge of the diaphragm 22 includes the outer edge of the column portion 21 when viewed from the column direction. When viewed from the column direction, the outer edge of the diaphragm 22 and the outer edge of the column portion 21 are parallel. A through hole 22 a is formed in the diaphragm 22. The through hole 22a of the diaphragm 22 is located inside the column portion 21 when viewed from the column direction. The through hole 22a has, for example, a circular shape when viewed from the column direction. The column 2 configured as described above has a hollow shape. The pillar 2 is filled with a filler 25 therein. The filler 25 is, for example, concrete.

  As shown in FIG. 3, the gusset plate 23 is fixed to the outer surface of the pillar 2. Specifically, the gusset plate 23 has a plate shape. The gusset plate 23 extends along a plane (XZ plane) including the column direction and the beam direction. The base end portion of the gusset plate 23 in the beam direction is fixed to the outer surface of the column 2. The gusset plate 23 is fixed to the diaphragm 22. Specifically, the upper end portion and the lower end portion of the gusset plate 23 in the column direction are fixed to the diaphragms 22 adjacent to each other. The width of the gusset plate 23 in the column direction is shorter at the tip than the base end of the gusset plate 23 in the beam direction. A plurality of through holes 23 a are formed in the gusset plate 23.

  The steel structure joint structure 1 further includes a steel plate gibber 24 (reinforcing member). The steel plate dowel 24 is fixed to the inner surface 21 a of the column 2 inside the column 2. The steel plate dowel 24 is fixed to the inner surface 21a of the column 2 to which the gusset plate 23 (and a beam web 31 described later) is fixed. Specifically, the steel plate dowel 24 has a plate shape. The steel plate dowel 24 extends along a plane including the column direction and the beam direction. The steel plate dowel 24 extends along the column direction. The steel plate dowel 24 has a proximal end in the beam direction fixed to the inner surface 21 a of the column 2. The steel plate dowel 24 is fixed so as to face the gusset plate 23 (and a beam web 31 described later) in the beam direction. A plurality of through holes 24 a are formed in the steel plate diver 24. The plurality of through holes 24a are arranged along the column direction. The steel plate dowel 24 is buried in the filler 25. The through hole 24 a is also filled with the filler 25.

  As shown in FIG. 4, the beam 3 includes a beam web 31 (web), an upper beam flange 32, a lower beam flange 33, and a reinforcing web 34. The beam web 31 has a plate shape. The beam web 31 extends along a plane including the column direction and the beam direction. The beam web 31 extends along the beam direction. The width of the beam web 31 in the column direction is shorter than the distance between the diaphragms 22 adjacent to each other. The width of the beam web 31 in the column direction is about 600 mm. The thickness of the beam web 31 is about 12 mm.

  The upper beam flange 32 is fixed to the upper end portion of the beam web 31 in the column direction. The lower beam flange 33 is fixed to the lower end portion of the beam web 31 in the column direction. The upper beam flange 32 and the lower beam flange 33 face each other in the column direction. The upper beam flange 32 and the lower beam flange 33 have a plate shape. The upper beam flange 32 and the lower beam flange 33 extend along a plane that intersects the column direction. The upper beam flange 32 and the lower beam flange 33 extend along the beam direction. The width of the upper beam flange 32 and the lower beam flange 33 in the horizontal direction (the third direction and the Y-axis direction) intersecting (here, orthogonal) to the column direction and the beam direction is about 250 mm. The thickness of the upper beam flange 32 and the lower beam flange 33 is about 25 mm. Thus, the beam 3 is configured to have an H-shaped cross section.

  The reinforcing web 34 is provided at a position corresponding to the front end 4 a (described later) of the vertical haunch 4. That is, the reinforcing web 34 is provided at a position away from the column 2 by a predetermined distance in the beam direction. As shown in FIG. 5, the reinforcing webs 34 are provided on both sides of the beam web 31 in the lateral direction when viewed from the beam direction. The reinforcing web 34 has a plate shape. The reinforcing web 34 spreads along a plane (YZ plane) that intersects (here, orthogonal) in the beam direction. The reinforcing web 34 extends along the column direction. Each reinforcing web 34 is fixed to the beam web 31 at the end on the beam web 31 side in the lateral direction. The upper end portion of the reinforcing web 34 in the column direction is fixed to the upper beam flange 32, and the lower end portion is fixed to the lower beam flange 33. The reinforcing web 34 is fixed to the beam web 31, the upper beam flange 32, and the lower beam flange 33 by welding, for example.

  As shown in FIG. 4 again, the beam end 3 a (one end) of the beam 3 in the beam direction is fixed to the column 2. Specifically, the beam 3 is arranged such that the upper beam flange 32 faces the diaphragm 22 of the column 2. The base end 31a of the beam web 31 in the beam direction is disposed so as to overlap the gusset plate 23 when viewed from the lateral direction. And the base end (one end) 31a of the beam web 31 in the beam direction is being fixed to the gusset plate 23 with the volt | bolt through the through-hole 23a of the gusset plate 23, for example. That is, the base end 31 a of the beam web 31 is fixed to the outer surface of the column 2 via the gusset plate 23. The base end of the upper beam flange 32 on the column 2 side is fixed to the diaphragm 22 of the column 2. The upper beam flange 32 is fixed to the diaphragm 22 by welding, for example.

  The vertical haunch 4 is provided below the beam 3 in the column direction. The vertical haunch 4 has a pair of vertical haunch webs 41 (a plurality of first webs) and a vertical haunch flange 43 (flange).

  The vertical haunch webs 41 are arranged along the lateral direction. The vertical haunch webs 41 face each other in the lateral direction. The vertical haunch web 41 has a plate shape. The vertical haunch web 41 extends along a plane including the column direction and the beam direction. When viewed from the beam direction, the vertical haunch web 41 is disposed on both sides of the beam web 31 in the lateral direction. When viewed from the beam direction, the vertical haunch web 41 is spaced from the beam web 31 by the same distance in the lateral direction.

  The vertical haunch web 41 has a quadrangular shape when viewed from the lateral direction. The vertical haunch web 41 includes an upper end portion 41a (first end portion), a lower end portion 41b (second end portion), a distal end portion 41c (third end portion), and a base end portion 41d (fourth end portion). , Including. The upper end 41a is the upper side of the vertical haunch web 41 on the beam 3 side in the column direction. The lower end 41b is a lower side opposite to the upper end 41a in the column direction. The front end portion 41c is an end portion on the opposite side to the column 2 of the vertical haunch web 41 in the beam direction. The base end portion 41d is an end portion on the column 2 side of the vertical haunch web 41 in the beam direction.

  The vertical haunch flange 43 is disposed on the side opposite to the beam 3 of the vertical haunch web 41 in the column direction. The vertical haunch flange 43 has a plate shape. The vertical haunch flange 43 extends along a plane that intersects the column direction. The vertical haunch flange 43 is fixed to the lower end portion 41 b of the vertical haunch web 41. The vertical haunch flange 43 is fixed to the lower end 41b of the vertical haunch web 41 by welding, for example. In the vertical haunch flange 43, the base end portion on the column 2 side in the beam direction is opposed to the diaphragm 22 adjacent to the diaphragm 22 to which the above-described upper beam flange 32 is fixed.

  Here, the vertical haunch 4 includes a tip portion 4a. The tip portion 4 a includes a tip portion 41 c of the vertical haunch web 41 and a tip portion 43 c of the vertical haunch flange 43. The front end 4a is the end opposite to the column 2 of the vertical haunch 4 in the beam direction. The front end 4a of the vertical haunch 4 is separated from the column 2 by a predetermined distance in the beam direction. The front end 4 a of the vertical haunch 4 corresponds to the position of the reinforcing web 34. The width of the vertical haunch 4 in the column direction is about 100 mm. The width of the vertical haunch 4 in the beam direction is about 300 mm.

  The vertical haunch 4 is fixed to the column 2 and the beam 3. Specifically, the vertical haunch flange 43 has a base end portion on the column 2 side in the beam direction fixed to the diaphragm 22. The vertical haunch flange 43 is fixed to the diaphragm 22 by welding, for example. A plate 49 is provided on the beam-side surface of the vertical haunch flange 43 in the column direction to prevent molten metal from entering the beam side that may occur during welding. The distance between the upper beam flange 32 and the vertical hunch flange 43 in the column direction is the same as the distance between the diaphragms 22 adjacent to each other in the column direction.

  The vertical haunch 4 is fixed to the beam 3. More specifically, the upper end portion 41 a of the vertical haunch web 41 is fixed to the beam 3. More specifically, the upper end portion 41 a of the vertical haunch web 41 is fixed to the lower beam flange 33 of the beam 3. The vertical haunch web 41 is fixed to the lower beam flange 33 by welding, for example.

  As described above, in the steel structure joint structure 1, the column 2 and the vertical haunch 4 fixed to the beam 3 are provided below the beam 3 in the column direction. For this reason, the beam 3 is supported by the column 2 via the vertical haunch 4 when the beam 3 is to be bent by a load along the column direction, for example. At this time, the load applied to the vertical haunch 4 is transmitted to each member of the vertical haunch 4 and dispersed. In the steel structure joint structure 1, since the vertical haunch 4 has a pair of vertical haunch webs 41, the vertical haunch 4 is hooked on the vertical haunch 4 compared to the case where the vertical haunch 4 has one vertical haunch web. The load is better distributed. That is, the maximum stress at the joint between the column 2 and the beam 3 is reduced. Thereby, the load resistance of a junction part can be improved.

  Moreover, since the vertical haunch 4 is provided on the lower side of the beam 3 in the column direction, interference with the vertical pipe can be suppressed. This eliminates the need to change the position of the vertical pipe.

  Further, since the vertical haunch 4 is provided on the lower side of the beam 3 in the column direction, for example, another beam is fixed on the side opposite to the beam 3 of the column 2 in the beam direction. Even if the difference in height between the beam 3 and the other beam is smaller than a predetermined value (for example, about 150 mm), it is not necessary to provide a new diaphragm 22. Thereby, the height difference can be processed only by the vertical haunch 4. In addition, the cost can be reduced and the degree of design freedom can be increased. In addition, the total amount of material can be reduced.

  Hereinafter, the effect of distributing the load applied to the vertical haunch 4 will be described in detail. As shown in FIG. 6A, the steel structure joint structure 100 according to the comparative example includes a vertical hunch 101. The vertical haunch 101 has one vertical haunch web 102. In the steel structure joint structure 100, when a load N along the column direction is applied to the beam 103, the load N is transmitted to the vertical haunch 101. The load N transmitted to the vertical haunch 101 is distributed to the vertical haunch flange 105 via the vertical haunch web 102. A graph G <b> 1 in FIG. 6A schematically shows a load distribution along the horizontal direction. At this time, the load distribution F <b> 1 (see graph G <b> 1) applied to the vertical haunch web 102 in the lateral direction reaches a peak in the vicinity of the vertical haunch web 102, and decreases with distance from the vertical haunch web 102.

  On the other hand, in the steel structure joining structure 1 of the present embodiment, the vertical haunch 4 has a pair of vertical haunch webs 41 as shown in FIG. Similarly, in the steel structure 1, when a load N along the column direction is applied to the beam 3, the load N is transmitted to the vertical haunch 4. The load N transmitted to the vertical haunch 4 is distributed to the vertical haunch flange 43 via the pair of vertical haunch webs 41. A graph G2 in FIG. 6B schematically shows the load distribution along the lateral direction. At this time, the load distribution F <b> 2 (see graph G <b> 2) applied to the vertical haunch web 41 in the lateral direction reaches a peak in the vicinity of the vertical haunch web 41 and decreases as the distance from the vertical haunch web 41 increases. That is, if the magnitude of the load N is the same as that in the comparative example (FIG. 6A), in this embodiment, the peak of the load distribution F2 is expected to be half of the peak of the load distribution F1. Is done. Therefore, the peak value of the load distribution F2 is smaller than the peak value of the load distribution F1. Thus, in the steel structure joint structure 1 of the present embodiment, the maximum load generated at the joint portion between the column 2 and the beam 3 is reduced.

  Moreover, in the steel structure joint structure 1, the beam 3 has the reinforcing web 34 extended along the column direction, and the vertical haunch 4 is the tip part 4a on the opposite side to the column 2 of the vertical haunch 4 in the beam direction. The reinforcing web 34 is provided at a position corresponding to the tip portion 4a. According to this structure, since the reinforcing web 34 is provided at a position corresponding to the tip portion 41 c, the beam 3 can sufficiently counter the reaction force received from the vertical haunch 4. Thereby, the load resistance of the joint portion is further improved.

  In addition, the steel-framed joint structure 1 further includes a steel plate dowel 24 extending along a plane including the column direction and the beam direction, the column 2 is filled with a filler 25, and the beam 3 is The beam end 31a has a beam web 31 that extends along a plane including the column direction and the beam direction, and has a base end 31a fixed to the column 2. 31 is fixed to the inner surface 21a of the column 2 on which the beam 31 is fixed, so as to face the beam web 31, and a plurality of through holes 24a are formed in the steel plate dowel 24, and a filler 25 is provided in the through holes 24a. Filled. According to this configuration, the steel plate dowel 24 is fixed so as to face the beam web 31 on the inner surface 21a of the column 2 to which the beam web 31 of the beam 3 is fixed. For this reason, when the beam 3 bends due to, for example, a load along the column direction, the steel plate dowel 24 also tends to move along with the deflection of the beam 3 via the column 2. Therefore, the steel plate diver 24 is buried in the filler 25, and the filler 25 is also filled in the through holes 24 a of the steel plate diver 24. For this reason, the movement of the steel plate dowel 24 is restricted by the resistance of the filler 25. Thereby, the beam 3 is supported by the steel plate dowel 24. Therefore, according to the steel structure joint structure 1, the strength of the joint portion between the column 2 and the beam 3 is improved. Moreover, according to this structure, the base end 31a of the beam web 31 also contributes to bending strength.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment.

  For example, as illustrated in FIG. 7, the joining structure 1 </ b> A according to the first modification includes a vertical hunch 4 </ b> A. The vertical haunch 4A may be provided on the upper side of the beam 3 in the column direction. Moreover, the joining structure 1B according to the modification 2 includes vertical hunches 4 and 4A. As shown in FIG. 8, the vertical hunches 4, 4A may be provided on both sides of the beam 3 in the column direction. That is, the vertical haunch is provided on at least one side of the beam 3 in the column direction.

  Moreover, as FIG. 9 shows, 1 C of joining structures which concern on the modification 3 are equipped with the vertical haunch 4C. The vertical haunch 4C may further include a vertical haunch web 44 (second web). Specifically, the vertical haunch web 44 has a plate shape. The vertical haunch web 44 extends along a plane that intersects the beam direction. The vertical haunch web 44 is fixed to the tip 41c of the vertical haunch web 41. The vertical haunch web 44 is fixed to the tip 41c of the vertical haunch web 41 by, for example, welding. The vertical haunch web 44 is fixed to the beam 3. Specifically, the upper end portion of the vertical haunch web 44 in the column direction is fixed to the lower beam flange 33 by welding, for example. The vertical haunch web 44 is fixed to the vertical haunch flange 43. Specifically, the vertical haunch web 44 is fixed to the tip of the vertical haunch flange 43 opposite to the column 2 in the beam direction, for example, by welding. According to the vertical haunch web 44, the rigidity of the small edge of the vertical haunch 4C is increased. Therefore, the load resistance of the joint is further improved. Note that the vertical haunch web 44 may not be fixed to the beam 3 and the vertical haunch flange 43.

  Moreover, as FIG. 10 shows, the junction structure 1D which concerns on the modification 4 is equipped with the vertical haunch 4D. The vertical haunch 4D may further include a vertical web (third web) 45. Specifically, the vertical web 45 has a plate shape. The vertical web 45 extends along a plane that intersects the beam direction. The vertical web 45 is fixed to the base end portion 41 d of the vertical haunch web 41. The vertical web 45 is fixed to the base end portion 41d of the vertical haunch web 41 by welding, for example. The vertical web 45 is fixed to the base end portion 41 d of the vertical haunch web 41. The vertical web 45 is fixed to the base end portion 41d of the vertical haunch web 441 by welding, for example. The vertical web 45 is fixed to the beam 3. Specifically, the upper end portion of the vertical web 45 in the column direction is fixed to the lower beam flange 33. The vertical web 45 is fixed to the lower beam flange 33 by welding, for example. The vertical web 45 is fixed to the vertical haunch flange 43. Specifically, the vertical web 45 is fixed to the base end portion on the column 2 side of the vertical hunch flange 43 in the beam direction. The vertical web 45 is fixed to the vertical haunch flange 43 by welding, for example. According to this configuration, the rigidity of the small edge of the vertical haunch 4D is further increased. Therefore, the load resistance of the joint is further improved. Note that the vertical web 45 may not be fixed to the beam 3 and the vertical hunch flange 43.

  As shown in FIG. 11, the joint structure 1 </ b> E according to the modification 5 includes a diaphragm 22 </ b> A. The diaphragm 22A is formed by integrating the vertical hunch flange 43 and the diaphragm 22 and includes a vertical hunch flange portion 22b and a diaphragm portion 22c. According to this configuration, the load resistance of the joint can be improved with a simpler configuration.

  Moreover, the shape of the column part 21 is not limited. The column portion 21 may have a cylindrical shape, for example. Further, the shape of the diaphragm 22 is not limited. The outer edge of the diaphragm 22 may have, for example, a circular shape when viewed from the column direction. Moreover, the shape of the through hole 22a is not limited. The through hole 22a may have, for example, a rectangular shape when viewed from the column direction. Further, when viewed from the column direction, the outer edge of the diaphragm 22 may not include the outer edge of the column 2. When viewed from the column direction, the outer edge of the diaphragm 22 may coincide with the outer edge of the column 2. Further, when viewed from the column direction, the outer edge of the diaphragm 22 and the outer edge of the column portion 21 do not have to be parallel. In addition, as the material of the filler 25, various materials other than concrete may be employed.

  Moreover, the pillar 2 does not need to extend along the vertical direction. The pillar 2 may extend along a direction inclined with respect to the vertical direction.

  Moreover, the beam 3 does not need to extend along the direction orthogonal to the column direction. The beam 3 may extend along a direction inclined with respect to the column direction.

  Moreover, the pillar 2 does not need to be filled with the filler 25 inside. The column 2 may be hollow inside.

  DESCRIPTION OF SYMBOLS 1 ... Steel-framed connection structure, 2 ... Column, 21 ... Column part, 21a ... Inner surface, 22 ... Diaphragm, 24 ... Steel plate jib (reinforcing member), 24a ... Through-hole, 25 ... Filler, 3 ... Beam, 3a ... Beam end, 31 ... Beam web, 31a ... Base end, 34 ... Reinforcement web, 4 ... Vertical haunch (reinforcement part), 4a ... Tip part, 41 ... Vertical haunch web (first web), 41a ... Upper end part (first End), 41b ... lower end (second end), 41c ... distal end (third end), 41d ... base end (fourth end), 43 ... vertical hunch flange (flange), 44 ... vertical Haunch web (second web), 45 ... vertical web (third web).

Claims (5)

A pillar having a plurality of pillars and a diaphragm and extending along the first direction;
A beam extending along a second direction intersecting the first direction, one end of which is fixed to the column;
A reinforcing portion that is provided on at least one side of the beam in the first direction and is fixed to the column and the beam;
The reinforcing part is
A plurality of first webs extending along a plane including the first direction and the second direction and arranged along a third direction intersecting the first direction and the second direction;
A flange extending along a plane intersecting the first direction,
The first web includes a first end on the beam side in the first direction, and a second end on the opposite side of the first end in the first direction,
The first end of each first web is secured to the beam;
The flange is fixed to the second end of each of the first webs and is fixed to the diaphragm. The beam has a reinforcing web extending along the first direction;
The reinforcing portion includes a tip portion on the opposite side of the column of the reinforcing portion in the second direction,
The steel reinforcing joint structure according to claim 1, wherein the reinforcing web is provided at a position corresponding to the tip portion. The first web further includes a third end of the first web opposite to the pillar in the second direction;
The reinforcing part is
The steel structure according to claim 1, further comprising a second web that extends along a plane intersecting the second direction and is fixed to the third end of each first web. Bonding structure.   The steel-framed joint structure according to any one of claims 1 to 3, wherein the flange is formed integrally with the diaphragm corresponding to the flange. A reinforcing member extending along a plane including the first direction and the second direction;
The pillar is filled with a filler,
The beam has a web that extends along a plane including the first direction and the second direction, one end of which is fixed to the column,
The reinforcing member is fixed inside the pillar so as to face the web on the inner surface of the pillar to which the web is fixed.
The steel structure joint structure according to any one of claims 1 to 4, wherein the reinforcing member has a plurality of through holes, and the through holes are filled with the filler.

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