JP2018162574A - Joint structure of column and beam, and building equipped with joint structure of column and beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint structure of a column and a beam which can be easily constructed, and a building equipped with the joint structure of the column and the beam.SOLUTION: A joint structure 50 of a column and a beam includes a column 51 having a concrete part at least in part, an embedded part 53 buried in the concrete part of the column 51, a beam receiving member 52 having a projecting part 54 projecting from the side surface of the column 51, a beam joined to the projecting part 54 of the beam receiving member 52, and a concrete beam 55 joined to a part other than a part where the projecting part 54 of the beam receiving member 52 of the column 51 is positioned.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a building structure including a column and beam joint structure and a column and beam joint structure.

Conventionally, as a joint structure between a reinforced concrete column and a steel beam, the technique described in Patent Document 1 is known. The technique described in Patent Document 1 is a structure in which a beam member is fastened to a steel frame of a steel reinforced concrete column with bolts and nuts, and then concrete is placed to embed the beam.
Moreover, the technique described in Patent Document 2 has a structure in which a steel beam is passed through a side surface of a reinforced concrete column.

JP 2003-268878 A JP 2008-291567 A

However, since the connection structure of these columns and beams considers the earthquake resistance of the building in the event of a quake, it is necessary to ensure a completely rigid connection structure, and the structure is complicated and laborious. There is a problem that it takes.
In areas where earthquakes are extremely rare, there is a demand for a column and beam joint structure with better workability.

  The objective of this invention is providing the building provided with the joining structure of the pillar and beam which can be constructed easily, and the joining structure of a pillar and a beam.

  The joint structure of a column and a beam according to the present invention is a joint structure of a column and a beam, a column having a concrete part at least in part, a buried part embedded in the concrete part of the pillar, and a side surface of the pillar A beam receiving member having a protruding portion protruding from the beam, a beam bonded to the protruding portion of the beam receiving member, and a portion bonded to a portion of the column other than the portion where the protruding portion of the beam receiving member is located It is provided with a concrete beam.

  According to the present invention, by using a concrete beam, the rigidity of the joint portion between the column and the beam can be secured, while the beam can be joined using the protruding portion of the beam receiving member protruding from the side surface of the column. . For this reason, it is possible to easily construct the joining structure of the columns and beams while ensuring the necessary rigidity. In particular, it is extremely useful when applied in areas where there is little earthquake, which does not require such a large earthquake resistance.

In the present invention, it is preferable that at least one of the column and the concrete beam is provided with a reinforcing bar, and the reinforcing bar is connected to the embedded portion of the beam receiving member.
According to this invention, since the reinforcing bars of the columns and / or concrete beams are connected to the embedded portions of the beam receiving members, the reinforcing bars are stably restrained. Thereby, when the reinforcing bar of the column is connected to the embedded portion of the beam receiving member, the beam receiving member can be more firmly and stably fixed to the column. On the other hand, when the reinforcing bars of a concrete beam are connected, the concrete beam can be firmly and stably fixed to the column through the beam receiving member, so that it is possible to form a strong joint structure between the column and the beam. It becomes.

In the present invention, the beam receiving member is formed with a hole penetrating the embedded portion in the horizontal direction in the embedded portion, and the reinforcing bar is inserted into the hole so that the embedded portion of the beam receiving member is inserted into the embedded portion. It can be connected.
Further, in this case, the concrete beam includes a beam main bar extending in the length direction of the concrete beam as the reinforcing bar, and the beam main bar is inserted into the hole to thereby bury the embedded portion of the beam receiving member. It can be connected to.
According to this invention, the reinforcing bars of the columns and the concrete beams are inserted into the holes provided in the embedded portion of the beam receiving member, so that these reinforcing bars and the embedded portion of the beam receiving member can be connected to each other. Therefore, it is possible to relatively easily connect the reinforcing bar and the embedded portion of the beam receiving member, and it is possible to easily form a strong joint structure by connecting the reinforcing bar and the beam receiving member.
When the reinforcing bar of the concrete beam is a beam main bar extending in the length direction of the concrete beam, the beam main bar need only be inserted into the hole of the beam receiving member. Therefore, it is possible to easily connect to the embedded portion of the beam receiving member without adding special processing to the beam main bar and without inhibiting the function of the beam main bar. In addition, since the strength of the beam main bar can be utilized to stably hold the beam receiving member at a predetermined position, a strong joint structure can be easily and reliably formed.

Further, in the present invention, the column includes a column reinforcing bar that extends along a side surface of the column as the reinforcing bar, and the column reinforcing bar is connected by being welded to the embedded portion of the beam receiving member. Can be.
According to this invention, although the structure is relatively simple, the connection between the column reinforcing bars and the beam receiving member is strong, and the original function of the auxiliary bars is not impaired. Therefore, the beam receiving member can be stably held at a predetermined position, and a strong joint structure can be easily and reliably formed.

In the present invention, the beam receiving member has a plurality of the protruding portions protruding in different directions from the side surface of the column, and the concrete beam includes the protruding portion of the beam receiving member on the side surface of the column. It can be joined at different positions.
According to the present invention, it is very easy to join a plurality of beams to a column while securing a strong joining structure, and the construction is facilitated.

A building having a column / beam junction structure according to the present invention is characterized by having the aforementioned column / beam junction structure.
According to the present invention, the building can be easily constructed as described above.

The perspective view showing the junction structure of the pillar and beam concerning one embodiment of the present invention. The side view showing the structure of the beam receiving member in the said embodiment. Sectional drawing showing the joining structure of the beam receiving member and beam in the said embodiment. Sectional drawing in the position different from FIG. 3A showing the joining structure of the beam receiving member and beam in the said embodiment. Sectional drawing showing the joining structure of the beam receiving member and beam in the said embodiment. Sectional drawing showing the junction structure of a pillar and a beam from which the connection structure of a beam receiving member and the reinforcement of a pillar differs from the said embodiment. Sectional drawing in the position different from FIG. 5 showing the connection structure of the pillar and beam from which the connection structure of a beam receiving member and the reinforcement of a pillar differs from the said embodiment. The top view showing the column reinforcement for welding. The perspective view showing the junction structure of the pillar and beam different from the said embodiment. The perspective view showing the junction structure of the pillar and beam further different from the said embodiment. The perspective view showing the structural framework of a column and a beam further with the above-mentioned embodiment. The top view which represents typically the building using the junction structure of the pillar and beam of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a column / beam junction structure (hereinafter, also referred to as “joint structure”) 50 according to an embodiment of the present invention.
This joining structure 50 includes a column 51 extending in the vertical direction, a beam receiving member 52 joined to the column 51, a steel beam 10 (see FIG. 2) joined to the beam receiving member 52, and the steel beam 10 Separately, a concrete beam 55 joined to the column 51 is provided. In addition, the joining structure 50 shown in FIG. 1 has a configuration suitable as a joining structure in which four beams extending in the horizontal direction orthogonal to the height direction of the pillar are joined to the side surface of the pillar, such as a middle pillar of a building. It has become.

In this embodiment, the column 51 has a reinforced concrete structure (so-called RC structure) extending in the vertical direction and having a substantially rectangular (more specifically, substantially square) cross section in the horizontal direction.
Specifically, as shown in FIG. 3A, FIG. 3B, and FIG. 4, the column 51 includes a plurality of column main reinforcing bars 51D that are reinforcing bars extending in the height direction (vertical direction) of the column 51 provided therein, A plurality of column reinforcing bars 51C, which are rebars wound around these column main bars 51D in a substantially horizontal direction and are arranged to extend along the four side surfaces (peripheral surfaces) of the columns inside the columns 51. I have. Further, a concrete portion 51E is provided in which concrete is placed so that the column main reinforcing bars 51D and the column reinforcing bars 51C are embedded therein.

The column main bars 51D are respectively provided at the four corners of the column 51 inside the column 51 (therefore, the column 51 has a total of four column main bars 51D). On the other hand, a plurality of column reinforcing bars 51C are arranged at regular intervals in the height direction of the columns 51 so as to be wound around these column main bars 51D.
The concrete portion 51E is made of concrete having a predetermined strength, and a certain cover thickness is formed between the column main reinforcement 51D or the column reinforcement 51C and the side surfaces 51A and 51B closest to the column 51. Has been.

  In this embodiment, the column 51 has a reinforced concrete structure, but the column of the present invention includes a steel reinforced concrete structure (so-called SRC structure) using various shapes of H-shaped steel as a steel frame, Any structure having a concrete portion that can form a buried portion of a beam receiving member, which will be described later, can be used.

The beam receiving member 52 includes an embedded portion 53 embedded in the concrete portion of the column 51 and a protruding portion 54 protruding from the side surface of the column 51.
In the present embodiment, as the beam receiving member 52, a grooved steel (channel material) having a substantially U-shaped cross section formed long in one direction in the horizontal direction is used, and the web 52A extending in the vertical direction and the web The configuration includes a pair of flanges 52B provided at both upper and lower ends of 52A. In the case of the present embodiment, as shown in FIG. 1, the beam receiving members 52 are respectively arranged at two locations on the upper side and the lower side with respect to one column 51.

Further, the beam receiving member 52 is joined to the column 51 in a state of penetrating the column 51 in the horizontal direction, and the central portion of the beam receiving member 52 in the length direction is in the concrete portion 51E of the column 51. It is a buried portion 53 that is buried. On the other hand, both end portions of the beam receiving member 52 in the length direction are protruding portions 54 protruding in different directions from the side surface of the column 51. In this embodiment, these protruding portions 54 are: Each of the pillars 51 protrudes from the side surface 51A located in the opposite direction. At this time, as shown in FIG. 2, the beam receiving member 52 is arranged on the column 51 so that the beam center of the steel beam 10 matches the column center of the column 51 when the steel beam 10 is joined. In the present invention, the beam center indicates the center line of the web 10A of the steel beam 10, and the column center indicates the center line of the side surface 51A of the column.
Further, the web 52 </ b> A in the protruding portion 54 is provided with a bolt insertion hole 5 that penetrates the web 52 </ b> A and is used for joining with the steel beam 10.

  As shown in FIG. 2, in the present embodiment, the steel beam 10 is a steel frame using an H-shaped steel having a web 10A extending in the vertical direction and a pair of flanges 10B provided at both upper and lower ends of the web 10A. It is a beam. The web 10A has a bolt insertion hole 11 that penetrates the web 10A and serves to join the beam receiving member 52. The bolt insertion hole 5 of the projecting portion 54 is joined to the beam receiving member 42. And are provided at corresponding positions.

The steel beam 10 is joined to the beam receiving member 52 by bringing the upper surface of the upper flange 52B of the projecting portion 54 of the beam receiving member 52 into contact with the lower surface of the upper flange 10B of the steel beam 10. This is performed after supporting the load of the steel beam 10 on the protrusions 54 of 52. Further, the web surface of the web 10 </ b> A of the steel beam 10 is brought into contact with the web surface of the web 52 </ b> A in the protruding portion 54 of the beam receiving member 52. The bolt 12 is inserted into the hole 5 of the protrusion 54 and the hole 11 of the steel beam 10 and tightened with the nut 13, so that the steel beam 10 is joined to the column 51 via the beam receiving member 52. ing.
As described above, the beam receiving member 52 and the steel beam 10 are brought into surface contact with each other and then fastened with the bolts 12 and the nuts 13 to be joined together, whereby the column 51 and the steel beam 10 are firmly joined. Therefore, even if a bending load is applied to the steel beam 10 from the vertical direction, a certain degree of rigidity can be ensured.

The concrete beam 55 is directly joined to a portion of the column 51 other than the portion where the steel beam 10 is located without using other members such as the beam receiving member 52.
As shown in FIG. 1, in the present embodiment, the concrete beam 55 is a pair of side surfaces located in opposite directions, in which the protruding portion 54 of the beam receiving member 52 is not located, among the four side surfaces of the column 51. Each of them is joined to 51B. In the present embodiment, the two concrete beams 55 are arranged at the same height at the height corresponding to one beam receiving member 52, and therefore, one column 51 There are four concrete beams 55 provided.

  Note that the concrete beam 55 has a peripheral surface, which will be described later, located on the upper side, the same height as the upper surface of the upper flange 10B of the steel beam 10 joined to the beam receiving member 52 at a height position corresponding to the concrete beam 55. It joins with the pillar 51 so that it may become. Further, the concrete beam 55 is joined to the column 51 in a state where the beam center coincides with the column center of the column 51. In this embodiment, the concrete beam 55 has a lower peripheral surface, which will be described later, on the lower side of the steel beam 10 joined to a beam receiving member 52 at a height corresponding to the concrete beam 55. The size in the height direction is set so as to be the same height as the lower surface of the flange 10B.

  Here, the “concrete beam” in the present invention includes not only a reinforced concrete structure (so-called RC structure) but also a steel-frame reinforced concrete structure (so-called SRC structure) using various shapes of H-shaped steel as a steel frame. It is a concept that includes the whole of which some or all of concrete is used as a beam. The structure of the concrete beam is not particularly limited, but it is important that the concrete beam has a desired rigidity and strength required for the concrete beam.

The concrete beam 55 in this embodiment employs a reinforced concrete structure composed of reinforcing bars and concrete.
Specifically, the concrete beam 55 of the present embodiment has a vertically long, substantially rectangular cross section that is long in the height direction and narrower than the width of the side surface of the column 51 to be joined. It has a configuration extending in the direction.
Furthermore, the concrete beam 55 is wound around a plurality of beam reinforcing bars 55A, which are reinforcing bars extending in the length direction (horizontal direction) of the concrete beam 55, and a direction perpendicular to the length direction of the beam reinforcing bars. And a plurality of beam reinforcing bars 55 </ b> B arranged to extend along the four peripheral surfaces of the concrete beam 55 inside the concrete beam 55. Furthermore, it has the beam concrete part 55C by which concrete was laid so that these beam main reinforcement 55A and beam reinforcement 55B might be embed | buried inside.

The main beam bars 55A are provided at four corner portions of the concrete beam 55 inside the concrete beam 55 so as to extend in directions parallel to each other. Accordingly, in one concrete beam 55, there are four beam main bars 55A, two at the same height on the upper side and two at the same height on the lower side.
On the other hand, the beam reinforcing bars 55B are wound around these four beam main bars 55A, and a plurality of beam reinforcing bars 55B are arranged at regular intervals in the length direction of the concrete beam 55.
The beam concrete portion 55C is made of concrete having a predetermined strength, and a certain cover thickness is formed between the beam main reinforcing bar 55A and the beam reinforcing bar 55B and the nearest peripheral surface of the concrete beam 55. Yes. In the present embodiment, the beam concrete portion 55C of the concrete beam 55 and the concrete portion 51E of the column 51 are formed substantially continuously and integrally with each other.

In addition, as described above, the concrete beams 55 are respectively joined to the pair of side surfaces 51B positioned in the opposite direction in the column 51, and the pair of concrete beams 55 are equal to each other with respect to one beam receiving member 52. It is arranged. Therefore, as shown in FIG. 3A, FIG. 3B, and FIG. 4, the beam main reinforcement 55A of the present embodiment penetrates the column 51 in the horizontal direction and continues from one concrete beam 55 to the other concrete beam 55, The concrete beam 55 is configured to share the four main beam bars 55A. As a result, the pair of concrete beams 55 are firmly joined to the column 51, and the state is stably maintained.
In this embodiment, each beam main bar 55A penetrates the column 51 through the space between a pair of column main bars 51D adjacent in the direction along the side wall of the column 51 without interfering with the column reinforcing bar 51C. It has become a state.

Here, some reinforcing bars of the concrete beam 55 are connected to the embedded portion 53 of the beam receiving member 52.
Thus, by connecting the reinforcing bar of the concrete beam 55 and the embedded portion of the beam receiving member 52, the reinforcing bar of the concrete beam 55 is stably restrained by the beam receiving member 52, and the concrete beam 55 is replaced with the beam receiving member. It can be firmly and stably fixed to the column 51 through 52. Further, the position of the beam receiving member 52 is also firmly fixed by the reinforcing bar of the concrete beam 55, and the steel beam 10 bonded to the beam receiving member 52 is secured to the column 51 firmly and stably. Therefore, as a whole, it is possible to form a strong column and beam joint structure 50.

In this embodiment, the main beam bar 55 </ b> A of the concrete beam 55 is connected to the embedded portion 53 of the beam receiving member 52.
Specifically, as shown in FIGS. 3B and 4, by inserting a beam main reinforcing bar 55 </ b> A of a concrete beam through a hole 53 </ b> A that penetrates in the horizontal direction formed in the embedded portion 53 of the beam receiving member 52, the beam The main reinforcement 55 </ b> A is connected to the embedded portion 53 of the beam receiving member 52.

The configuration relating to the connection between the beam main reinforcement 55A of the concrete beam 55 and the embedded portion 53 of the beam receiving member 52 will be described more specifically.
As described above, a pair of concrete beams 55 is arranged at a position corresponding to the height of the one beam receiving member 52 with respect to one beam receiving member 52, and the beam main bars of the pair of concrete beams 55 are arranged. Passes through the column 51 in the horizontal direction and continues from one concrete beam 55 to the other concrete beam 55. At this time, if no measures are taken, positional interference may occur between the beam main reinforcement 55A and the web 52A of the embedded portion 53 of the beam receiving member 52. In the present embodiment, the embedded portion of the beam receiving member 52 is provided. In the web 52A of 53, a beam main bar insertion hole 53A penetrating the web 52A in the horizontal direction is provided at a position intersecting the length direction of the beam main reinforcing bar 55A, and the beam main bar 55A is inserted into the beam main bar insertion hole 53A. Is inserted through. Thereby, the beam main reinforcement 55A of the concrete beam 55 and the embedded portion 53 of the beam receiving member 52 can be stably connected to each other.

  As a result, the concrete beam 55 can be firmly and stably fixed to the column 51 through the beam receiving member 52 without reducing the strength of the concrete beam 55. On the other hand, since the position of the beam receiving member 52 on the column 51 is firmly fixed by the beam main reinforcement 55A of the concrete beam 55, the steel beam 10 joined to the beam receiving member 52 is strong and stable to the column 51. Can be secured. Therefore, it is possible to form a strong joint structure 50 as a whole joint portion between the beam including the concrete beam 55 and the column 51.

In the present embodiment, as shown in FIG. 4, the beam receiving member 52 includes two beam main bars positioned on the upper side of the four beam main bars 55 </ b> A of the pair of concrete beams 55. There are two holes 53A for inserting the main beam of the beam. As described above, when the beam main reinforcing bar 55A is passed through the beam main reinforcing bar insertion hole 53A of the beam receiving member 52, the integrity of the concrete beam 55 and the beam receiving member 52 after the concrete is hardened can be improved.
Further, these two beam main bar insertion holes 53A are arranged in a direction along the side wall of the column 51 in the web 52A of the embedded portion 53 of the beam receiving member 52 so as to match the position of the beam main bar 55A to be inserted. It is provided between the adjacent pair of column main bars 51D at the same height.

  It should be noted that the beam main reinforcing bar insertion hole 53A is provided with an inner peripheral diameter sufficient to form a sufficient clearance between the inner periphery of the beam main reinforcing bar 55A and the outer periphery of the beam main reinforcing bar 55A. It is good also as an aspect. On the contrary, the beam main reinforcing bar insertion hole 53A can be inserted so that the beam main reinforcing bar 55A is pushed into the hole 53A with the inner peripheral diameter in a state where there is almost no clearance between the inner periphery and the outer periphery of the beam main reinforcing bar 55A. Thus, the relative position between the beam main reinforcing bar 55A and the beam receiving member 52 is firmly held, and the position of the beam receiving member 52 with respect to the column 51 and the concrete beam 55 can be held more stably. May be.

On the other hand, in this embodiment, the column reinforcing bars 51 </ b> C of the column 51 are also connected to the embedded portion 53 of the beam receiving member 52.
Thus, by connecting the reinforcing bar of the column 51 and the embedded portion 53 of the beam receiving member 52, the reinforcing bar of the column 51 is stably restrained by the beam receiving member 52 at the joint between the column and the beam. Since the position of the beam receiving member 52 is also firmly fixed by the reinforcing bar of the column 51, the column 51 and the beam receiving member 52 are firmly and stably joined. Therefore, as a whole, it is possible to form a strong column / beam joint structure 50.

  Furthermore, in the case of this embodiment, in addition to the fact that the column reinforcement 51C of the column 51 and the embedded portion 53 of the beam receiving member 52 are connected, the reinforcing bars of the concrete beam 55 are also connected to the beam receiving member 52 as described above. It is connected to the buried portion 53. For this reason, it becomes a structure which can perform the joint of the beam receiving member 52 with respect to the column 51, and the position holding | maintenance of the beam receiving member 52 with respect to the column 51 or the concrete beam 55 still more firmly and stably.

As shown in FIGS. 3A and 4, in the present embodiment, among the reinforcing bars of the column 51, the column reinforcing bars 51 </ b> C are connected to the embedded portion 53 of the beam receiving member 52.
Specifically, the beam receiving member 52 is provided with a column reinforcing bar insertion hole 53B for inserting the column reinforcing bar 51C in the embedded portion 53 separately from the beam main bar insertion hole 53A. The column reinforcing bar 51C is connected to the embedded portion 53 of the beam receiving member 52 by inserting a part of the column reinforcing bar 51C disposed at the joint between the column and the beam into the hole 53B for inserting the column reinforcing bar. Has been. The column reinforcing bar insertion hole 53B passes through the web 52A in a substantially horizontal direction at a portion of the embedded portion 53 of the beam receiving member 52 that intersects the column reinforcing bar 51C that interferes with the position of the web 52A. Is provided.

  In the case of the present embodiment, as shown in FIGS. 3A and 4, in order to connect the two column reinforcing bars 51 </ b> C positioned on the upper side and the lower side at the joint portion between the column and the beam to the beam receiving member 52, There are a total of four holes 53B for insertion of the bars at positions corresponding to the side walls of the column main bars 51D in the web 52A of the embedded portion 53 of the beam receiving member 52 (the positions of the covering concrete portions). Is provided. The two beam reinforcing bar insertion holes 53B through which the single column reinforcing bar 51C is inserted are provided at the same height.

  In addition, about the hole 53B for column reinforcement reinforcement penetration, it is good also as an aspect which is easy to insert the column reinforcement reinforcement 51C as an inner peripheral diameter of the grade which sufficient clearance is formed between the outer periphery of the column reinforcement reinforcement 51C. Alternatively, the column reinforcing bar 51C and the beam receiving member 52 can be inserted so that the column reinforcing bar 51C can be inserted into the hole as an inner peripheral diameter with almost no clearance between the column reinforcing bar 51C and the outer periphery. These positions may be held so that the position of the beam receiving member 52 with respect to the column 51 and the concrete beam 55 can be held more stably.

In the present embodiment, a plurality of stud anchors 56 are welded to the upper surface of the upper flange 52B and the lower surface of the lower flange 52B in the embedded portion 53 of the beam receiving member 52, respectively, and the upper flange 52B. In this case, the stud anchors 56 protrude upward, and in the case of the lower flange 52B, the stud anchors 56 protrude downward.
Since the stud anchor 56 is thus provided, an anchor effect can be expected, so that the embedded portion 53 of the beam receiving member 52 is more stable in the column 51 (more specifically, in the concrete portion 51E). Therefore, the joint between the beam receiving member 52 and the column 51 can be made a stronger structure. In addition, about a stud anchor, what is necessary is just to attach suitably according to the intensity | strength of the required joining structure, and the number to attach can also be selected suitably as needed.

  The column / beam joint structure 50 having the above-described structure uses the concrete beam 55 to secure the rigidity of the joint portion between the column 51 and the beam, while also supporting the beam receiving member 52 protruding from the side surface 51A of the column 51. The steel beam 10 formed of shape steel or the like can be joined using the protruding portion 54. Therefore, it is possible to easily construct the joining structure 50 while ensuring the necessary rigidity. In particular, it is extremely useful when applied in an area where there is little earthquake, which does not require such a large earthquake resistance, and it is possible to shorten the construction period and reduce costs.

In the above embodiment, the reinforcing bars of the column 51 (specifically, the column reinforcing bars 51C) are connected to the embedded portion 53 of the beam receiving member 52, and the reinforcing bars of the column 51 are connected to the embedded portion 53 of the beam receiving member 52. As a structure to be formed, the reinforcing bar of the column 51 is inserted into a hole (specifically, a column reinforcing bar insertion hole 53B) formed in the embedded part 53 of the beam receiving member 52 and penetrating the embedded part 53 in the horizontal direction. It was set as the structure connected by this.
However, when connecting the reinforcing bar of the column to the embedded portion of the beam receiving member, means other than the structure for inserting the reinforcing bar of the column into the hole of the embedded portion of the beam receiving member can be used.

For example, as shown in FIG. 5 to FIG. 7, a part of the column reinforcing bars of the column 51 is joined to the embedded portion 53 of the beam receiving member 52 by welding to thereby reinforce the column reinforcing bars. You may make it connect with the embedding part of a receiving member. In the following description, the same parts as those already described are denoted by the same reference numerals and description thereof is omitted.
Specifically, as a column reinforcing bar, apart from the normal column reinforcing bar 51C, a substantially U-shaped column reinforcing bar 57 for welding as shown in FIG. 7 is used, and both ends of this column reinforcing bar 57 for welding are used. The portion is welded to the embedded portion 53 ′ of the beam receiving member 52 ′.
The embedded portion 53 ′ of the beam receiving member 52 ′ is not provided with any holes for inserting the column reinforcing bars 57 as in the above embodiment.

  As shown in FIG. 5 to FIG. 7, the column reinforcing bar 57 for welding is a bridge formed between a pair of column main bars 51 </ b> D positioned in a direction along the side wall of the column 51 and formed in a bar shape long in one direction. The connecting portion 57A has a pair of straight rod-like bent portions 57B which are provided at both ends in the length direction of the extending portion 57A and are bent at substantially right angles in the same direction. Further, each bending portion 57B is provided with a protruding portion 57C provided at an end portion on the opposite side to the extending portion 57A and bent outwardly along the length direction of the extending portion 57A.

  As shown in FIGS. 5 and 6, the column reinforcing bars 57 for welding bridge the span 57A between the pair of column main bars 51D substantially horizontally, and the pair of bent portions 57B. By setting the column main reinforcing bars 51D to be sandwiched, the protruding portions 57C at the ends of the bent portions 57B are brought into contact with the embedded portions 53 ′ of the beam receiving members 52 ′. At this time, since each protrusion 57C is in contact with the surface of the web 52A in the embedded portion 53 ′ of the beam receiving member 52 ′, the protrusion 54 is in contact with the web 52A of the embedded portion 53 ′. The portions are joined by the welded portion 58 by fillet welding or the like, and the entire column reinforcing bar 57 for welding is thereby connected to the buried portion 53 ′ of the beam receiving member 52 ′.

Note that, since the column reinforcing bars 57 for welding are welded to only one surface of the web 52A in the embedded portion 53 ′ of the beam receiving member 52 ′, as shown in FIG. In order to ensure the original function of the reinforcing bars, the column reinforcing bars 57 for welding need to be provided on both surfaces of the web of the beam receiving member 52 ′. Therefore, two column reinforcing bars 57 for welding are provided at the same height of the web 52A in the embedded portion 53 ′ of the beam receiving member 52 ′ so as to wind up the four column main bars 51D.
Also, as shown in FIGS. 5 and 6, the beam receiving member 52 ′ is disposed between the upper and lower beam main bars 55A of the concrete beam 55, and no positional interference occurs with any of the beam main bars 55A. It is an aspect. For this reason, the beam receiving member 52 ′ is not provided with any hole for inserting the beam main reinforcing bar 55A as in the above embodiment. The beam receiving member 52 'basically has the same configuration as the beam receiving member of the above embodiment except that the hole for inserting the column reinforcing bar and the hole for inserting the beam main bar of the concrete beam are not formed in the embedded portion. The same configuration as 52 and the same effects are provided, and the same reference numerals are given and the description thereof is omitted.

  As described above, even when the column reinforcing bar 57 for welding is used, the same operation and effect as in the above embodiment can be achieved, but there is no need to provide a hole through which the column reinforcing bar 51C is inserted. The member 52 ′ can be easily formed, and a decrease in strength of the beam receiving member 52 ′ itself can be suppressed. Moreover, since the influence of the design error of the column 51 and the beam receiving member 52 'can be suppressed, the construction at the site is easy.

  Moreover, since the beam receiving member 52 ′ is disposed between the upper and lower beam main bars 55A of the concrete beam 55 as shown in FIGS. 5 and 6, a hole through which the beam main bar 55A is inserted becomes unnecessary. In this respect as well, it is possible to suppress a decrease in strength of the beam receiving member 52 ′ itself and to suppress the influence of construction errors of the concrete beam 55 and the beam receiving member 52 ′. Furthermore, even if any vertical vertical load is applied to the beam receiving member 52 ′, either the upper beam main bar 55A or the lower beam main bar 55A is applied to the beam receiving member 52 ′. Since a resistance can be applied to the beam receiving member 52 ′ against the force in the direction, the strength of the joint structure between the column and the beam can be ensured.

  As for the column reinforcing bars, the beam reinforcing member insertion hole 53A is provided as in the above embodiment, or the column reinforcing bars 57 for welding are welded to the beam receiving member 52 'as described above. It is not always necessary to connect to the embedded portions 53 and 53 ′ of the beam receiving members 52 and 52 ′. If the strength required for the joint structure of the column and beam, the stability of the position holding of the beam receiving member, etc. are secured, or the mutual position depends on the position and spacing of the column reinforcement bars, the position and size of the beam receiving member, etc. When the connection is difficult, the connection between the column reinforcement and the embedded portion of the beam receiving member may be omitted. In addition, when connecting a reinforcing bar of a concrete beam to a beam receiving member, the strength of the joint structure can be secured only by connecting the concrete beam to the beam receiving member, or the position holding stability of the beam receiving member can be ensured. In this case, the connection between the column reinforcement and the embedded portion of the beam receiving member may be omitted.

Moreover, in the said embodiment, it was formed in the embedding part 53 of the beam receiving member 52 as a structure which connects the reinforcement (specifically beam main reinforcement 55A) of the concrete beam 55 to the embedding part 53 of the beam receiving member 52. A reinforcing bar was inserted through a hole penetrating the embedded portion 53 in the horizontal direction (specifically, a hole 53A for inserting a beam main bar).
However, it is not always necessary for the reinforcing bars of the concrete beam to be connected to the buried part of the beam receiving member, and it is possible to ensure the strength necessary for the connection structure between the column and the beam and the stability of the position holding of the beam receiving member. If it is difficult to connect to each other due to the size of the concrete beam in the height direction, the position of the main beam of the beam, or the size and position of the beam receiving member, the connection between the beam reinforcement and the embedded portion of the beam receiving member Connection may be omitted. In addition, when connecting the column reinforcement to the beam receiving member, it is possible to ensure the strength of the joint structure only by connecting the column reinforcement to the beam receiving member, or to ensure the stability of the position retention of the beam member. In this case, the connection between the reinforcing bar of the concrete beam and the buried portion of the beam receiving member may be omitted.
Further, even when the reinforcing bar of the beam is connected to the embedded part of the beam receiving member, the reinforcing bar is inserted into the hole formed in the embedded part 53 of the beam receiving member 52 as in the above embodiment. The reinforcing bar of the beam and the embedded portion of the beam receiving member may be connected by any means such as welding.

By the way, in the said embodiment, four beams extended in the horizontal direction orthogonal to the height direction of a pillar are provided in the side surface of pillars, such as a middle pillar of a building like the joint structure 50 of a pillar and beams shown in FIG. A preferred configuration has been described as a joined structure.
However, in the present invention, in addition to the column and beam connection structure 50 suitable for such a middle column, the present invention is suitable for a side column used on the outer peripheral side of a building as shown in FIGS. The present invention can also be applied to a structure or a joining structure suitable for a prism as shown in FIG.

Specifically, the column-to-beam joint structure 60 shown in FIG. 8 is a mode in which three beams extending in the horizontal direction perpendicular to the height direction of the column 61 are joined to the side surface of the column 61, Of these three beams, two are joined to the side surfaces 61A and 61A of the column 61 via the protrusion 54 of the beam receiving member 52 (not shown in FIG. 8), and the remaining one. Is a concrete beam 65 joined directly to the side surface 61B of the column 61.
Here, with respect to the concrete beam 65, the end portion side of the beam main bar on the column 61 side is embedded in the column 61 without being connected to other concrete beams, and the beam receiving member 52 is embedded in the column 61. It is in a state of being connected to the buried portion 53.

The basic structure of the column 61 is almost the same as the column 51 of the joint structure 50 described above, and the concrete beam 65 has a basic structure other than the configuration on the end side of the beam main bar on the column 61 side. Since it is substantially the same as the concrete beam 55 of the joining structure 50 and both have the same effect, detailed description is abbreviate | omitted. Further, the structure and the like of the beam receiving member 52 are basically the same as the above-described joint structure 50, and the same operational effects are obtained.
Further, in the structure shown in FIG. 8, the concrete beam 65 is joined to the side surface 61B of the column 61 located in the direction of the free end of the flange of the beam receiving member 52. You may join to the side surface located in the base end side (web side direction) of the flange of the beam receiving member 52. FIG.

  On the other hand, the column and beam joint structure 70 shown in FIG. 9 is an aspect in which three beams extending in the horizontal direction perpendicular to the column height direction are joined to the side surface of the column 71 in the same manner as the joint structure 60 described above. It has become. However, among these three beams, one beam is joined to the side surface 71A of the column 71 via the protrusion 74 of the beam receiving member 72 (not shown in FIG. 9), and the remaining two beams. Is different from the joint structure 60 in that the concrete beam 55 is joined to the side surface 71 </ b> B of the column 71.

Here, in the beam receiving member 72, one end side in the length direction is an embedded portion 73 embedded in the column 71, and the other end side is a protruding portion 74 protruding from the side surface 71 </ b> A of the column 71. Therefore, the beam receiving member 72 is provided with only one protrusion 74, and has a structure in which only one beam can be attached.
Moreover, about the burying part 73, the edge part on the opposite side to the protrusion part 74 does not protrude from the side surface 71A of the pillar 71 (the side surface in the position facing the side surface 71A from which the protrusion part 74 protrudes), It is located in the pillar 71. Further, the embedded portion 73 is embedded in the column 71 to a position where it can be sufficiently connected to the beam reinforcement of the concrete beam and the column reinforcement of the column 71. The beam main bars and the column reinforcement bars of the columns 71 are connected to each other. At this time, for example, it is preferable that at least half or more of the beam receiving member 72 is embedded in the column 71 to form the embedded portion 73, which is longer than the protruding dimension of the protruding portion 74 of the beam receiving member 72.

The basic structure of the pillar 71 is substantially the same as the pillar 51 of the joint structure 50 described above, and the basic structure of the beam receiving member 72 other than that having only one protrusion is a joint structure. 50, which is substantially the same as the beam receiving member 52, and the same effects are obtained, and detailed description thereof is omitted. Further, the structure and the like of the concrete beam are basically the same as the above-described joint structure 50, and the same operational effects are obtained.
9 shows that the beam receiving member 72 is installed on the column 71 with the protruding portion 74 positioned on the side surface 71A on the right side of the column 71 in FIG. It may be installed on the pillar 71 in a state where the protrusion 74 is located on the side surface (that is, the left side in FIG. 9).

Further, the column-to-beam joint structure 80 shown in FIG. 10 has a mode in which two beams extending in the horizontal direction orthogonal to the height direction of the column are joined to the side surface of the column 81. One of the beams is formed on the side surface 81A of the column 81 via a beam receiving member 72 having an embedded portion 73 embedded in the column 81 and a protruding portion 74 protruding from one side surface 81A of the column 81. The joined beam (omitted in FIG. 10) and the other one are the concrete beams 65 joined directly to the side surface 81B of the column 81.
This joining structure is a construction that is used particularly as a prism because the beams joined to the pillar 81 extend in the horizontal direction perpendicular to each other.

Note that the basic structure of the column 81 is substantially the same as that of the column 51 of the joint structure 50 described above, and provides the same operational effects, and thus detailed description thereof is omitted. Further, the concrete beam has basically the same configuration as the concrete beam 65 of the joint structure 60 described above, and the structure of the beam receiving member is basically the same as the beam receiver member 72 of the joint structure 70 described above. Since both have the same effects, detailed description is omitted using the same reference numerals.
Further, in the structure shown in FIG. 10, the beam receiving member 72 is installed on the column 81 with the protrusion 74 positioned on the side surface 81A on the right side of the column 81 in FIG. You may install in the pillar 71 in the state in which the protrusion part 74 was located in the side surface of a direction (namely, left side in FIG. 10). On the other hand, the concrete beam 65 is joined to the side surface 81B of the column 81 located in the direction of the free end of the flange of the beam receiving member 72, but the direction opposite to this side surface (that is, the beam receiving member 72). You may join to the side surface located in the base end side (web side direction) of a flange.

  The joint structures 60, 70, and 80 having the above configuration basically have substantially the same effect as the joint structure 50 described above, but the number of beams, and further, the number of beams joined to the concrete beam and the beam receiving member, Depending on the mutual positional relationship, the joint structures 60 and 70 can be selectively used as side pillars, and the joint structure 80 can be selectively used as a prism or the like.

And FIG. 11 has shown one Embodiment of the building using the junction structure of the pillar and beam of this invention.
Specifically, the building 100 in FIG. 11 has a structure in which the above-described joint structures 50, 60, 70, and 80 are combined, and two joint structures 50 related to the middle pillar are arranged in the center. Bonding structures 60 relating to the side pillars are disposed at both ends in the longitudinal direction (X direction in FIG. 11) at the center in the short direction (Y direction in FIG. 11). In addition, four joint structures 70 related to the side pillars are respectively arranged at the center of both ends of the building 100 in the Y direction, and joint structures 80 related to the prisms are respectively arranged at the four corners of the building 100.

The building 100 having such a structure can be constructed by, for example, placing concrete on-site. Specifically, at the construction site, the columns 51, 61, 71, 81 of the joint structures 50, 60, 70, 80 and the formwork of the concrete beams 55, 65 are built, and the reinforcing bars are arranged inside. Next, in a state where the portions corresponding to the embedded portions 53 and 73 of the beam receiving members 52 and 72 are disposed in the mold, the protruding portions 54 and 74 are protruded from the outer surface of the mold frame, whereby the respective beam receiving members. After 52 and 72 are installed and the projections 54 and 74 of the beam receiving members 52 and 72 are cured, concrete is placed.
When the curing of the concrete is finished, the steel beam 10 made of H-shaped steel is passed between the beam receiving members 52 and 72, and the beam receiving members 52 and 72 and the steel beam 10 are fastened by the bolts 12 and nuts 13. Then, a floor slab or the like (not shown) is installed on the concrete beams 55 and 65 and the steel beam 10. As a result, the building 100 having the column and beam joint structures 50, 60, 70, 80 is constructed.

  As a result, in the building 100 having the above-described structure, the rigidity of the joint portion between the columns 51, 61, 71, 81 and the beams is secured by the concrete beams 55, 65 of the joint structures 50, 60, 70, 80. Since the pillars 51, 61, 71, 81 and the steel beam 10 can be joined using the protruding portions 54, 74 of the beam receiving members 52, 72 protruding from the side surfaces of the 51, 61, 71, 81. Easy to install. Therefore, it is suitable for construction in areas where severe seismic performance is not required, and the construction period can be shortened and costs can be reduced.

  Further, since the building 100 can have a structure in which the steel beam 10 made of H-shaped steel and the concrete beams 55 and 65 are combined, even if the steel beam 10 falls off due to a fire or the like, the concrete beam 55, The floor slab can be supported by 65, and the building can be made independent. Therefore, since the fireproof coating of the steel beam 10 that is normally required can be omitted or simplified, it is possible to contribute to a reduction in the construction cost of the fireproof coating.

  In addition, although the building 100 of FIG. 11 uses the joining structure of this invention for the connection part of all the pillars and beams, it may be made to construct a building only using the joining structure of this invention for a part. Good.

The present invention is not limited to the above-described embodiments, and further includes modifications as described below.
In the above embodiment, the grooved steel is used as the beam receiving members 52 and 52 ′. However, the beam receiving member does not need to be a grooved steel as long as the beam can be attached, and has various shapes. Any one can be used. Further, the beam to be joined to the beam receiving member does not need to be H-shaped steel as in the above embodiment, and any shape can be used as long as it can be joined to the protruding portion of the beam receiving member. it can.
In the embodiment, the pillars 51, 61, 71, 81 have a substantially rectangular cross section. However, the pillars have a substantially circular cross section, an elliptical shape, a polygonal shape other than a rectangular shape, and the like. Any one can be used.
Furthermore, with regard to the concrete beam, in the embodiment, the cross section has a vertically long and substantially rectangular shape, but the shape of the concrete beam has a horizontally long cross section, a substantially circular cross section, an elliptical shape, other than a rectangular shape. Any shape such as a polygonal shape can be used.
In addition, as the specific structure, shape, and the like in carrying out the present invention, other structures may be adopted as long as the object of the present invention can be achieved.

  5 ... hole, 10 ... steel beam, 10A ... web, 10B ... flange, 11 ... hole, 12 ... bolt, 13 ... nut, 42 ... beam receiving member, 50 ... joint structure, 51 ... column, 51A ... side, 51B ... Side surface, 51C ... Column reinforcing bar, 51D ... Column main bar, 51E ... Concrete part, 52 ... Beam receiving member, 52 '... Beam receiving member, 52A ... Web, 52B ... Flange, 53 ... Buried part, 53' ... Buried part, 53A ... hole, 53B ... hole, 54 ... projection, 55 ... concrete beam, 55A ... beam reinforcement, 55B ... beam reinforcement, 55C ... beam concrete part, 56 ... stud anchor, 57 ... column reinforcement, 57A ... Part, 57B ... bent part, 57C ... projecting part, 58 ... welded part, 60 ... joined structure, 61 ... pillar, 61A ... side face, 61B ... side face, 65 ... concrete beam, 70 ... joined structure, 71 ... pillar, 71A ... Side, 71B ... Surface, 72 ... beam receiving member, 73 ... buried section, 74 ... protruding portion, 80 ... joint structure, 81 ... pillar, 81A ... aspect, 81B ... side surface, 100 ... building.

Claims (7)

It is a joint structure of columns and beams,
A pillar having a concrete part at least in part;
A beam receiving member having an embedded portion embedded in the concrete portion of the column and a protruding portion protruding from a side surface of the column;
A beam joined to the protruding portion of the beam receiving member;
A pillar-to-beam joint structure comprising: a concrete beam joined to a part of the pillar other than the part where the protruding portion of the beam receiving member is located. The column and beam joint structure according to claim 1,
Reinforcing bars are provided on at least one of the pillar and the concrete beam,
The rebar is connected to the buried portion of the beam receiving member. In the column and beam joint structure according to claim 2,
In the beam receiving member, a hole penetrating the buried portion in the horizontal direction is formed in the buried portion.
The rebar is connected to the embedded portion of the beam receiving member by being inserted through the hole, and is a column / beam joint structure. In the junction structure of the pillar and beam of Claim 3,
The concrete beam includes a beam main bar extending in the length direction of the concrete beam as the reinforcing bar,
The beam main bar is connected to the buried portion of the beam receiving member by being inserted through the hole, and is a column / beam joint structure. In the junction structure of the pillar and beam as described in any one of Claims 2-4,
The column includes a column reinforcing bar extending along a side surface of the column as the reinforcing bar,
The column reinforcing bar is connected by welding to the embedded portion of the beam receiving member. In the junction structure of the pillar and beam as described in any one of Claims 1-5,
The beam receiving member has a plurality of the protruding portions protruding in different directions from the side surfaces of the column,
The joint structure of a column and a beam, wherein the concrete beam is joined to a position different from the protruding portion of the beam receiving member on a side surface of the column.   A building provided with a column and beam joint structure according to any one of claims 1 to 6.

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