JP6990979B2 - Framing structure of a building - Google Patents

Description

The present invention relates to a frame structure of steel columns and beams in a building.

In buildings such as high-rise buildings, in order to increase the horizontal rigidity of the entire building, measures are taken by using square steel pipe columns with a large cross-sectional size. However, when a square steel pipe column having a large cross-sectional size is used, the overhang of the column from the wall surface becomes large, and the degree of freedom in using the indoor space is restricted accordingly.

Further, conventionally, two vertical support members made of H-shaped steel and a connecting member made of H-shaped steel arranged vertically between the vertical support members are provided, and the upper and lower ends of the vertical support members are H-shaped. It is fixed to a beam made of steel by bolting, and the flange of the vertical support material and the flange of the connecting material are joined to each other by bolting, and the upper and lower ends of the connecting material are separated from each other and are not fixed. Connecting columns are known (see Patent Document 1).

That is, according to this connecting column, it is possible to suppress the overhang of the column from the wall surface, and it is possible to secure the required vertical bearing capacity.

Japanese Unexamined Patent Publication No. 2016-69839

However, the above-mentioned conventional technique adopts a connecting material having a required number of openings or a low yielding material for the purpose of absorbing horizontal force due to an earthquake or the like by deformation. , Does not increase the rigidity against horizontal force.

The present invention has been made in view of the above points, and a technical problem thereof is to provide a frame structure having improved horizontal bending strength while suppressing the protrusion of columns from a wall surface. It is in.

The frame structure of the building includes a pair of beams , a web vertically arranged and extending in a direction connecting the pair of beams, and a pair of flanges extending horizontally from both upper and lower ends of the web, and the pair of beams. A beam-shaped connecting member provided between the beams and joined to the ends of the pair of beams, a lower column structure provided below the beam-shaped connecting member, and above the beam-shaped connecting member. The upper pillar structure provided is provided, and the lower pillar structure includes a plurality of pillar bodies made of H-shaped steel whose upper ends are joined to the lower surface of the beam-shaped connecting member and are parallel in the horizontal direction. , A connecting material made of shaped steel having a web and a flange, the flanges are arranged horizontally, and the web and the flange are joined to the flange of the beam body from an orthogonal direction to connect the plurality of beam bodies. The upper column structure includes a plurality of column bodies made of H-shaped steel whose lower ends are joined to the upper surface of the beam-shaped connecting member and are parallel in the horizontal direction, and has a web and a flange. It is made of steel and includes a connecting material in which the flanges are arranged horizontally and the web and the flange are joined to the flange of the beam body from an orthogonal direction to connect the plurality of beam bodies.

According to the present invention, it is possible to suppress or prevent the overhang of the column from the wall surface, and it is possible to improve the rigidity against the bending moment in the horizontal direction.

It is a front view which shows the preferable 1st Embodiment of the frame structure of a building. It is the perspective view. Each of (a) to (e) is a front view showing another embodiment of the connecting material connecting the column main body at a position different from that of the beam. Each of (a) and (b) is a front view showing another embodiment of a connecting material (inter-column beam) connecting the column bodies at the same height as the beam. It is a perspective view which shows the preferable 2nd Embodiment of the frame structure of a building. It is a front view which shows the preferable third embodiment of the frame structure of a building. It is a partially omitted perspective view which shows the preferable third embodiment of the frame structure of a building. It is a perspective view which shows the preferable 4th Embodiment of the frame structure of a building.

A preferred embodiment of the frame structure of a building will be described with reference to the drawings.

[First Embodiment]
First, FIGS. 1 and 2 show the first embodiment. In the figure, reference numeral 1 is a column built vertically (Z direction), reference numeral 2 is horizontally arranged and the reference numeral 2 is on the pillar 1. It is a joined beam. The pillar 1 is composed of two pillar main bodies 11 and a required number of connecting members 12 arranged and joined between the pillar main bodies 11 and 11.

Specifically, the column body 11 in the column 1 is made of H-shaped steel, that is, the web 111 and the pair of flanges 112 and 113 protruding in the orthogonal direction (Y direction) from both ends in the width direction (X direction) thereof. It is the main body that has the bearing capacity for the vertical load of the building.

The connecting member 12 in the column 1 is made of I or H-shaped steel extending in the X direction, that is, the web 121 and a pair of flanges 122 protruding in the horizontal direction (Y direction) from both ends in the width direction (Z direction) thereof. , 123, and the X-direction both ends 12a of the web 121 and the flanges 122, 123 are joined by welding so as to be orthogonal to the flanges 112, 112 facing each other in the column bodies 11, 11. 11 are connected to each other.

The beam 2 has the same cross-sectional shape as the connecting member 12 and is made of I-shaped steel or H-shaped steel extending in the X direction, that is, from the web 21 and both ends in the width direction (Z direction) to the horizontal direction (Y direction). It has a pair of overhanging flanges 22 and 23 so that the web 21 and the X-direction end 2a of the flanges 22 and 23 are orthogonal to the flanges 113 and 113 on the opposite side of the connecting member 12 in the column bodies 11 and 11. , Joined by welding.

The connecting member 12 includes one in which the column bodies 11 and 11 are connected at a position different from that of the beam 2 and one in which the column bodies 11 and 11 are connected at a position at the same height as the beam 2. , Each connecting member 12 is arranged vertically at a predetermined interval. The connecting member 12 connecting the column bodies 11 and 11 at the same height as the beam 2 is called an inter-column beam 12A.

A plurality of horizontal ribs 114 made of steel are joined to the column body 11 by welding in a state orthogonal to the web 111 and the flanges 112 and 113 in the column body 11. These ribs 114 are arranged at positions corresponding to the upper and lower flanges 122 and 123 in the connecting member 12. That is, the flanges 122 and 123 of the connecting member 12 are aligned with the rib 114 of the pillar body 11 in a straight line in the horizontal direction (X direction). Further, at the position of the column beam 12A which is the connecting member 12, the flanges 22 and 23 of the beam 2 are directed in the horizontal direction (X direction) together with the rib 114 of the column body 11 and the flanges 122 and 123 of the column beam 12A. They are lined up in a straight line.

The web 121 of the column beam 12A and the web 21 of the beam 2 are also in a state of being linearly aligned with the web 111 of the column main body 11 in the horizontal direction (X direction).

According to the first embodiment having the above-described configuration, the column 1 is a cross section of a pair of column bodies 11 made of H-shaped steel connected by a connecting member 12 (including an intercolumn beam 12A). Unlike the case of using a large square steel pipe column to secure vertical bearing capacity and horizontal rigidity, the column does not protrude from the wall surface, which increases the indoor span and frees the use of indoor space. The degree can be greatly improved.

Further, the column body 11 in the column 1 is horizontal because the strength of the H-shaped steel is further enhanced by the ribs 114 and the column 1 is a continuous through column without being divided vertically (Z direction) by the beam 2. Rigidity with respect to bending moment in the direction (X direction) increases. Therefore, the seismic resistance is improved, it is possible to prevent the column from being destroyed when a large horizontal force is applied due to a large earthquake, and the relative horizontal displacement (interlayer deformation) between the upper beam and the lower beam is suppressed to a small level. be able to.

Moreover, when a horizontal force in the X direction due to an earthquake or the like is applied to the flanges 112 and 113 of the column main body 11 via the beam 2 and the connecting member 12, the flanges 22 and 23 of the beam 2 and the flange 122 of the inter-column beam 12A, Since the 123 and the ribs 114 linearly arranged in the X direction suppress the deformation of the flanges 112 and 113 of the column body 11, the bending rigidity of the column 1 with respect to the X direction in which the column bodies 11 and 11 are arranged is further increased. It becomes a thing. Further, the fact that the web 121 of the column beam 12A and the web 21 of the beam 2 are provided side by side with the web 111 of the column main body 11 in the X direction also contributes to the improvement of the bending rigidity of the column 1 in the X direction. Since the column main body 11 and the connecting member 12 (inter-column beam 12A) and the beam 2 are joined by welding, the joining strength is high.

Based on FIGS. 3A to 3E, another embodiment of the connecting member 12 connecting the column bodies 11 and 11 at a position different from that of the beam 2 will be described. In each aspect, the rib 114 of the pillar body 11 and the flanges 122 and 123 of the connecting member 12 are arranged at different heights.

FIG. 3A is an example in which the distance between the pair of flanges 122 and 123 provided on the connecting member 12 is larger than the distance between the pair of ribs 114 of the column body 11. In this example, each part is arranged so that the horizontal projection plane between the pair of ribs 114 is included in the horizontal projection plane between the pair of flanges 122 and 123.

The one shown in FIG. 3B is also an example in which the distance between the pair of flanges 122 and 123 provided on the connecting member 12 is larger than the distance between the pair of ribs 114 of the column body 11. However, in this example, the pair of ribs 114 are offset downward so that the horizontal projection plane between them is positioned at an offset position while overlapping with the horizontal projection plane between the pair of flanges 122 and 123. Each part is arranged in.

The one shown in FIG. 3C is also an example in which the distance between the pair of flanges 122 and 123 provided on the connecting member 12 is larger than the distance between the pair of ribs 114 of the column body 11. In this example, the pair of ribs 114 are offset upward so that the horizontal projection plane between them is positioned off the horizontal projection plane between the pair of flanges 122 and 123 while overlapping. Each part is arranged.

FIG. 3D is an example in which the distance between the pair of flanges 122 and 123 provided on the connecting member 12 is smaller than the distance between the pair of ribs 114 of the column body 11. In this example, the pair of ribs 114 are offset upward so that the horizontal projection plane between them is positioned completely off the horizontal projection plane between the pair of flanges 122 and 123. Is placed.

The one shown in FIG. 3 (e) is also an example in which the distance between the pair of flanges 122 and 123 provided on the connecting member 12 is smaller than the distance between the pair of ribs 114 of the column body 11. However, in this example, each part is arranged so that the horizontal projection plane between the pair of flanges 122 and 123 is positioned in the horizontal projection plane between the pair of ribs 114.

Based on FIGS. 4 (a) and 4 (b), another embodiment of the connecting member 12 connecting the column bodies 11 and 11 at the same height as the beam 2, that is, the inter-column beam 12A will be described. Each of these embodiments can further increase the rigidity and strength of the frame structure.

FIG. 4A is an example in which the distance between the pair of flanges 122 and 123 provided on the column beam 12A is larger than the distance between the pair of ribs 114 of the column body 11. In this example, each part is arranged so that the horizontal projection plane between the pair of ribs 114 is included in the horizontal projection plane between the pair of flanges 122 and 123.

In the one shown in FIG. 4B, the inter-column beam 12A is divided into two and arranged at a position corresponding to the upper end and a position corresponding to the lower end of the beam 2, respectively.

[Second embodiment]
FIG. 5 shows, as a preferred second embodiment of the frame structure of a building, a beam 3 made of I-shaped steel or H-shaped steel is attached to a connecting member 12 in a column 1 in a direction (Y direction) orthogonal to the beam 2. It shows an example of joining. That is, the beam 3 can be joined to the connecting member 12 connecting the column bodies 11 and 11 by welding via an appropriate joining plate 124. In the illustrated example, the end of the web 31 of the beam 3 is welded to the web 121 of the inter-column beam 12A which is the connecting member 12 via the joining plate 124, and the end of the flange 32 of the beam 3 is between the columns. It is welded to the flange 122 of the beam 12A.

[Third embodiment]
6 and 7 show a preferred third embodiment of the frame structure of a building. In this embodiment, the difference from the first and second embodiments described above is that the three pillar bodies 11 are connected to each other via the connecting member 12. The pillar main body 11 and the connecting member 12 are the same as those in the first and second embodiments.

That is, also in this embodiment, the connecting member 12 connects the column bodies 11 and 11 at the same height as the beam 2 (inter-column beam 12A) and the column body at a height different from that of the beam 2. Some 11 and 11 are connected. The connecting members 12 are arranged vertically at predetermined intervals, and both ends of the web 121 and the flanges 122, 123 are orthogonal to the flanges 112, 112 (or flanges 113, 113) facing each other in the adjacent column bodies 11, 11. As described above, they are joined by welding, whereby the pillar bodies 11 and 11 are connected to each other.

Further, a plurality of horizontal ribs 114 made of steel materials joined to the web 111 and the flanges 112 and 113 in an orthogonal state are joined to each pillar body 11 by welding. These ribs 114 are located at positions corresponding to the upper and lower flanges 122 and 123 in the inter-column beam 12A which is the connecting member 12 and the upper and lower flanges 22 and 23 in the beam 2.

According to the third embodiment, since the number of the pillar main bodies 11 is increased as compared with the first and second embodiments, the rigidity against the vertical bearing capacity and the horizontal force can be further improved.

If the yield point of the connecting material 12 is set to be low and the elongation is good by appropriately setting the material and the wall thickness, the connecting material 12 is plastically deformed by the input of the horizontal shearing force from the column body 11, which is effective. It can also function as a panel damper that consumes vibration energy and attenuates vibration.

[Fourth Embodiment]
FIG. 8 shows a preferred fourth embodiment of the frame structure of a building.

In this fourth embodiment, the difference from the first to third embodiments described above is that the upper end and the lower end of the column body 11 are welded to the beam-shaped connecting member 13, and the end portion of the beam 2 is formed. , It is said that it is joined to the beam-shaped connecting member 13 by welding.

Specifically, the beam-shaped connecting member 13 is welded to the web 131 extending in the XZ direction, a pair of flanges 132 and 133 extending horizontally (Y direction) from both upper and lower ends thereof, and the web 131 and the flanges 132 and 133 in an orthogonal state. It is composed of a plurality of ribs 134. The widths of the flanges 132 and 133 are equal to or slightly wider than the widths of the flanges 112 and 113 of the column body 11, and the plurality of ribs 134 are vertically (Z direction) with the flanges 112 and 113 of the column body 11, respectively. They are lined up in a straight line.

Further, the beam 2 is joined by welding to the rib 134 at the X-direction end of the beam-shaped connecting member 13 with the end of the web 21 aligned linearly with the web 131 of the beam-shaped connecting member 13 in the X-direction. The ends of the flanges 22 and 23 are joined to the flanges 132 and 133 of the beam-shaped connecting member 13 by welding in a state of being linearly aligned in the X direction.

Further, the end of the web 31 of the beam 3 extending in the direction orthogonal to the beam 2 (Y direction) is joined to the web 131 of the beam-shaped connecting member 13 by welding via the joining plate 135, and the flange 32 of the beam 3 is joined. Is joined to the flange 132 of the beam-shaped connecting member 13 by welding.

The web 131 of the beam-shaped connecting member 13 is also located side by side with the web 111 of the column body 11 and the web 21 of the beam 2.

Also in the fourth embodiment having the above configuration, since the column 1 is formed by connecting a pair of column bodies 11 made of H-shaped steel with a connecting member 12, it is vertically supported by using a square steel pipe column having a large cross-sectional size. The pillars do not protrude from the wall surface as in the case of ensuring the force and the rigidity in the horizontal direction, so that the span of the room becomes large and the degree of freedom in using the room space can be greatly improved.

Moreover, the bending rigidity with respect to the horizontal force in the X direction due to an earthquake or the like can be increased by the ribs 114 linearly arranged in the X direction with the flanges 122 and 123 of the connecting member 12, and the column body 11 and the beam are increased by the horizontal force in the X direction. As for the rigidity against the deformation force applied between the shaped connecting members 13, the web 131 and the rib 134 of the beam-shaped connecting member 13 are linearly aligned with the web 111 and the flanges 112 and 113 of the column body 11 in the vertical direction (Z direction). It can be enhanced by doing so. Further, the fact that the web 131 of the beam-shaped connecting member 13 is provided side by side with the web 111 of the column body 11 and the web 21 of the beam 2 also contributes to the improvement of the bending rigidity of the column 1 in the X direction.

Therefore, even in this embodiment, unlike the case of using a square steel pipe column having a large cross-sectional size, it is possible to suppress or prevent the column from overhanging from the wall surface. The degree of freedom of use can be greatly improved. In addition, since the rigidity against the bending moment in the horizontal direction is improved, the earthquake resistance is improved, and it is possible to prevent the column from being destroyed when a large horizontal force is applied due to a large earthquake, and the upper beam and the lower beam can be prevented. The relative horizontal displacement (interlayer deformation) with and can be suppressed to a small value.

1 Pillar 2 Beam 3 Beam 11 Pillar body 13 Beam-shaped connecting material 12 Connecting material 12A Inter-column beam 21 Web 22 Flange 23 Flange 111 Web 112 Flange 113 Flange 114 Rib 121 Web 122 Flange 123 Flange

Claims (5)

With a pair of beams,
A web vertically arranged and extending in a direction connecting the pair of beams and a pair of flanges extending horizontally from both upper and lower ends of the web are provided, and the pair of beams is provided between the pair of beams. Beam-shaped connecting material joined to the end and
The lower column structure provided below the beam-shaped connecting material and
An upper column structure provided above the beam-shaped connecting member and
Equipped with
The lower column structure is
A plurality of column bodies made of H-shaped steel whose upper ends are joined to the lower surface of the beam-shaped connecting member and are parallel in the horizontal direction.
It is made of shaped steel having a web and a flange, and the flange is arranged horizontally, and the web and the flange are joined to the flange of the pillar body from an orthogonal direction to connect the plurality of pillar bodies. ,
Including
The upper column structure is
A plurality of column bodies made of H-shaped steel whose lower ends are joined to the upper surface of the beam-shaped connecting member and are parallel in the horizontal direction.
It is made of shaped steel having a web and a flange, and the flange is arranged horizontally, and the web and the flange are joined to the flange of the pillar body from an orthogonal direction to connect the plurality of pillar bodies. ,
The frame structure of the building including. The pair of beams are made of H-shaped steel with a pair of flanges protruding horizontally from the upper and lower ends of the web.
The beam-like connecting material comprises a plurality of ribs welded orthogonally to the web and the flange.
The frame structure of a building according to claim 1, wherein the pair of flanges of the beam-shaped connecting member are constructed so as to be aligned with the pair of flanges of the pair of beams. The column body comprises ribs spanning between a pair of flanges of the column body, parallel to the flanges of the connecting material.
The frame structure of the building according to claim 1 or 2, characterized in that. The frame structure of the building according to any one of claims 1 to 3, wherein each of the pair of beams is constructed longer than the beam-shaped connecting member. It is provided with another beam connected to the beam-shaped connecting member so as to extend from the beam-shaped connecting member at right angles to the beam.
The frame structure of the building according to claim 4, characterized in that.

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