JP7373382B2 - Vibration damping structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vibration damping structure in a structure in which a column-beam frame section consisting of columns and beams is continuous in the vertical direction.

As the vibration damping structure, each of the plurality of column and beam frame sections is provided with a brace and a vibration damping device. The brace is provided in a posture extending downward from the beam constituting the column-beam frame on the upper side, and a vibration damping device such as a vibration damper is connected to the lower end of the brace and provided in a posture extending in the horizontal direction. There is.

In this damping structure, if the damping device installed in the upper column-beam frame is placed above the beams that make up the lower column-beam frame, the damping device will be placed above the slab. It will be placed in a protruding manner. Therefore, the vibration damping device becomes a hindrance, making it impossible to form an opening, such as an entrance to the indoor space, in the column-beam frame.

Therefore, conventionally, the vibration damping devices of the column-beam frame on the upper side are arranged at the same level in the vertical direction with respect to the beams of the column-beam frame on the lower side (for example, Patent Documents 1 and 2 reference.).

In the damping structure described in Patent Document 1, by omitting the beams constituting the lower column-beam frame, the space originally for arranging the beams of the lower column-beam frame is replaced by the space for the upper columns. This space is used as the installation space for the vibration damping device in the beam frame section, and the damping device in the column and beam frame section on the upper side is installed at the same level in the vertical direction as the beam in the column and beam frame section on the lower side. ing.

In the vibration damping structure described in Patent Document 2, the beams constituting the lower column-beam frame are made into beams with a built-in damping device that incorporates a damping device, so that the beams of the lower column-beam frame are On the other hand, the vibration damping devices for the upper column-beam frame are arranged at the same level in the vertical direction.

Patent No. 5682035 Patent No. 3690453

However, in the vibration damping structure described in Patent Document 1, the beams constituting the lower column-beam frame are omitted, so a structure in which small beams are newly provided to support the slab on both sides of the vibration damping device is required. This will complicate the structure and reduce workability.

In addition, in the vibration damping structure described in Patent Document 2, a structure for incorporating a vibration damping device is added, such as securing installation space for the vibration damping device within the beam that constitutes the lower column-beam frame. This results in a complicated structure and reduced workability.

In view of this situation, the main problem of the present invention is to be able to arrange the vibration damping device of the column-beam frame on the other side at the same level in the vertical direction with respect to the beam of the column-beam frame on the other side. However, it is an object of the present invention to provide a vibration damping structure that can simplify the structure and improve workability.

A first feature of the present invention is that in a structure in which a column-beam frame consisting of columns and beams is continuous in the vertical direction, each column-beam frame is equipped with a brace and a vibration damping device. It has a swing structure,
The brace is provided in a posture extending from the joint part side of the column-beam frame part on the upper side to the lower side,
The vibration damping device is connected to a lower end of the brace and is provided in a horizontally extending position,
In the vertically adjacent upper and lower column-beam frame sections, the beams constituting the lower column-beam frame section and the vibration damping device provided in the upper column -beam frame section are lined up in the outward direction of the structure. arranged ,
The damping device provided in the upper column-beam frame is disposed at the same level as the beam forming the lower column-beam frame.

According to this configuration, in the upper and lower column-beam frame sections that are adjacent in the vertical direction, the beam of the column-beam frame section on one side of the upper and lower sides and the vibration damping device of the column-beam frame section on the other side of the upper and lower sides are moved in the direction out of the structure plane. By arranging them side by side, the vibration damping devices of the column-beam frame on the other side can be arranged at the same level in the vertical direction with respect to the beams of the column-beam frame on the other side. As a result, the damping device can be hidden below the slab, so that, for example, an opening, such as an entrance to the indoor space, can be formed in the column-beam frame. Moreover, by hiding the vibration damping device, the range of design can be expanded, and the light is not blocked by the vibration damping device, making it possible to improve daylighting.

Moreover, in order to realize such a placement relationship between the beam and the vibration damping device, the installation positions of the beam in the column-beam frame on one side above and below and the damping device on the column-beam frame on the other side must be adjusted. It is only necessary to make adjustments, and there is no need to add a new structure or the like. Therefore, it is possible to arrange the vibration damping devices of the column-beam frame section on the upper and lower sides at the same level in the vertical direction with respect to the beams of the column-beam frame section on the upper and lower sides, while simplifying the structure and improving workability. You can improve your performance.

A second characteristic configuration of the present invention is that in the upper and lower column-beam frame portions that are adjacent to each other in the vertical direction, the beams constituting the upper column-beam frame portion are displaced to one side in the outward direction of the structure, and , the beams constituting the column-beam frame on the lower side are displaced to the other side in the direction outside the structural plane,
The braces and vibration damping devices provided in the upper column-beam frame are arranged vertically with the beams forming the upper column-beam frame, and are displaced to one side in the outward direction of the structure. The point is that

According to this configuration, the beams, braces, and damping devices of the upper column-beam frame are efficiently arranged together using the space on one side in the outward direction of the structure with the columns as a reference. be able to. Moreover, by using the space on the other side of the structure outside the structure where beams of the upper column-beam frame and vibration damping devices are not installed, the beams of the column-beam frame on the lower side are moved to the other side of the structure outside the structure. Since the vibration damping device can be displaced to the side, the vibration damping device of the upper column-beam frame and the beam of the lower column-beam frame can be easily and appropriately arranged in line with each other in the direction outward from the structure. can be set. Therefore, the beam, the brace, and the damping device can be easily arranged in an appropriate arrangement relationship while effectively utilizing the space in the direction outside the structural plane with the pillar as a reference.

A third characteristic configuration of the present invention is that in a plurality of vertically adjacent column-beam frame sections, the beam, the brace, and the vibration damping device are arranged alternately on one side and the other side in the out-of-plane direction. The point is that it is arranged in a continuous layered state.

According to this configuration, in the plurality of column-beam frame sections, the beams, braces, and vibration damping devices are arranged in a continuous layer state that alternately exists on one side and the other side in the direction outside the structure surface. The beams, braces, and vibration damping devices can be arranged in a well-balanced manner in the direction outside the structural plane with respect to the columns, making it easier to maintain an appropriate structural balance of the structure.

Front view of the column-beam frame in the first embodiment Side view of the column-beam frame in the first embodiment Side view of the column-beam frame in the second embodiment Side view of the column-beam frame in the third embodiment

Embodiments of a vibration damping structure according to the present invention will be described based on the drawings.
[First embodiment]
This vibration damping structure is applied, for example, to multi-story buildings such as office buildings and condominiums, and is intended to absorb and attenuate seismic energy and vibration energy that act on the building during earthquakes and strong winds. .

As shown in FIG. 1, the multi-layered building is a structure (building) 4 in which a column-beam frame 3 made up of columns 1 and beams 2 is continuous in the vertical direction. In each of the plurality of column-beam frame sections 3, an upper beam (girder) 2 is provided to connect a pair of left and right columns 1 arranged at a predetermined interval, and the beam 2 connects each floor. Slab 5 is supported.

Each of the plurality of column-beam frame sections 3 is provided with a brace 6 and a damping device 7, as shown in FIG. The brace 6 has a V-shape in which the upper end portion 6a side widens in the left-right direction and the lower end portion 6b side approaches and intersects in the left-right direction. The left and right upper end portions 6a of the brace 6 are each connected to a joint portion (a joint portion between the column 1 and the beam 2) of the column-beam frame portion 3. A lower end portion 6b where the left and right braces 6 intersect is connected to a central attachment portion 8. A center attachment part 8 is provided at the center of the column-beam frame 3 in the left-right direction, and end attachment portions 9 are provided at both ends of the column-beam frame 3 in the left-right direction. A pair of vibration damping devices 7 (for example, oil dampers) are provided on the left and right, respectively, and are located between the center attachment portion 8 and the end attachment portions 9, respectively.

The relationship between the arrangement positions of each member in the upper and lower column-beam frame sections 3 will be explained.
In each of the plurality of column-beam frame sections 3, as shown in FIG. 2, the beams 2, braces 6, and vibration damping devices 7 are arranged in a straight line in the vertical direction. Incidentally, in FIGS. 1 and 2, among the plurality of column and beam frame sections 3 that are continuous in the vertical direction, the column and beam frame sections 3 for three stories are shown, and the columns and beams arranged above and below are shown. The illustrations omit each member.

When looking at the entire plurality of vertically adjacent column and beam frame sections 3, as shown in FIGS. 1 and 2, the beams 2, braces 6, and vibration damping devices 7 They are arranged in a continuous layered state that alternately exists on one side and the other side in the depth direction with respect to the paper surface (the left-right direction in FIG. 2).

As shown in FIG. 2, the beam 2, the brace 6, and the damping device 7 in the first column-beam frame section 3 from the lower side are disposed to be displaced to the right within the width of the column 1. The beam 2, the brace 6, and the vibration damping device 7 in the second column-beam frame section 3 from the lower side are disposed to be displaced to the left within the width of the column 1. The beam 2, the brace 6, and the vibration damping device 7 in the third column-beam frame section 3 from the lower side are disposed to be displaced to the right within the width of the column 1. In this way, the beams 2, braces 6, and vibration damping devices 7 can be arranged in a well-balanced manner in the outward direction of the structure with respect to the columns 1, and it is easy to ensure the structural balance of the structure 4 at an appropriate balance. Become something.

By arranging the beams 2, braces 6, and vibration damping devices 7 in a continuous layer that alternately exists on one side and the other side in the out-of-plane direction, the beams 2, braces 6, and vibration damping devices 7 are arranged in a layered state that alternately exists on one side and the other side in the out-of-plane direction. Looking at each of the sections 3, the beams 2 constituting the column-beam frame section 3 on the upper side are displaced to one side in the direction outside the structural plane (the depth direction with respect to the plane of the paper in Fig. 1, the left-right direction in Fig. 2). Moreover, the beams 2 constituting the column-beam frame 3 on the lower side are displaced to the other side in the out-of-structure direction (the depth direction with respect to the plane of the paper in FIG. 1, the left-right direction in FIG. 2). Become.

In the example shown in FIG. 2, for example, the beam 2a in the first column-beam frame section 3 from the lower side is disposed displaced to the right within the width of the column 1, whereas the beam 2a is disposed on the lower side. The beam 2b in the second column-beam frame section 3 is disposed to be displaced to the left within the width of the column 1. In this manner, in the vertically adjacent upper and lower column-beam frame sections 3, the beams 2 are disposed on opposite left and right sides within the width of the column 1.

In addition, since the beam 2, the brace 6, and the vibration damping device 7 are arranged in a straight line in the vertical direction, for example, as shown in FIG. The beam 2a in 3 is disposed displaced to the right within the width of the column 1, while the brace 6c and the damping device 7a in the second column-beam frame 3 from the bottom are It is disposed to be displaced to the left within the width of the column 1 while being vertically aligned with the beam 2b in the second column-beam frame section 3 from the bottom.

As shown in FIGS. 1 and 2, in the upper and lower column-beam frame sections 3 that are adjacent in the vertical direction, the beams 2 and the vibration damping device 7 are arranged such that the beams constituting the column-beam frame section 3 on one side of the upper and lower sides are 2 and a vibration damping device 7 provided in the column and beam frame section 3 on the other side of the upper and lower sides are arranged side by side in the outward direction of the structure (the depth direction with respect to the plane of the paper in FIG. 1, and the left-right direction in FIG. 2). . In FIG. 1, regarding the vibration damping devices 7, those located in front of the beam 2 in the paper are shown by solid lines, and those located in the rear of the paper from the beam 2 are shown in dotted lines.

As shown in FIG. 2, for example, the beam 2a in the first column-beam frame section 3 from the bottom is displaced to the right within the width of the column 1, and the beam 2a in the second column from the bottom is disposed so as to be displaced to the right. A damping device 7a in the beam frame portion 3 is disposed displaced to the left within the width of the column 1, and the beam 2a and the damping device 7a are arranged outside the structure plane within the width of the column 1. They are arranged adjacent to each other in the direction (left-right direction in FIG. 2).

By adopting the above-mentioned arrangement of the beams 2, braces 6, and vibration damping devices 7 in the column-beam frame 3, the vibration damping devices 7 can be hidden on the lower side of the slab 5, as shown in FIG. It can be placed in Thereby, the damping device 7 does not protrude above the slab 5, and an opening 10 such as an entrance to the indoor space can be formed in the column-beam frame 3. Furthermore, by hiding the damping device 7 below the slab 5, the range of designs can be expanded, and light is not blocked by the damping device 7, making it possible to improve daylighting. .

In order to hide the damping device 7 on the lower side of the slab 5, as shown in FIG. 11 is provided, and the brace 6 is provided so as to pass through the through opening 11 in the vertical direction. The lower end portion 6b of the brace 6 passes through the through opening 11 in the vertical direction and is connected to the central attachment portion 8 disposed below the slab 5. As shown in FIG. 2, the width of the through opening 11 is formed to be larger than the width of the brace 6 by a predetermined width in the outward direction of the column-beam frame 3 (in the left-right direction in FIG. 2). Thereby, the through opening 11 comes into contact with the brace 6, and buckling of the brace 6 in the direction outside the structural plane can be prevented.

[Second embodiment]
This second embodiment is another embodiment regarding the structure of the pillar 1 in the first embodiment. Hereinafter, based on FIG. 3, the structure of the pillar 1 will be mainly explained, while omitting the explanation of the structure similar to that of the first embodiment.

In the first embodiment, as shown in FIG. 2, the width of the column 1 is such that the beam 2 and the damping device 7 are lined up in the direction outside the structural plane of the column-beam frame 3 (in the left-right direction in FIG. 2). It is set to have a width sufficient to accommodate both the beam 2 and the vibration damping device 7, and the beam 2 and the vibration damping device 7 are arranged so as to be lined up within the width of the column 1.

On the other hand, in the second embodiment, as shown in FIG. It is set to have a width sufficient to accommodate only one side. As a result, in the second embodiment, the joint section 12 that connects the column 1 and the beam 2 in the column-beam frame section 3 connects the beam 2 and the vibration damping device 7 in a state where the beam 2 and the vibration damping device 7 are lined up. It is set to have a width sufficient to accommodate both, and the beam 2 and the vibration damping device 7 are arranged so as to be lined up within the width of the joint section 12.

An arrangement configuration in which, in vertically adjacent upper and lower column-beam frame sections 3, the beams 2 are displaced to one side and the other side in the direction outside the structural plane (left-right direction in FIG. 3), and the beams 2 and the damping device 7 are arranged side by side in the out-of-plane direction (left-right direction in FIG. 3), and other arrangements are the same as in the first embodiment.

[Third embodiment]
The third embodiment is another embodiment of the arrangement of the beams 2, braces 6, and vibration damping devices 7 in the column-beam frame sections 3 that are adjacent in the vertical direction in the first embodiment. Hereinafter, based on FIG. 4, the arrangement of the beams 2, braces 6, and vibration damping devices 7 in vertically adjacent column-beam frame sections 3 will be explained, while omitting explanations of the same configurations as in the first embodiment. .

In the first embodiment, as shown in FIG. 2, in the upper and lower column-beam frame sections 3 that are adjacent in the vertical direction, the beams 2 constituting the upper column-beam frame section 3 are directed outward from the structural plane (left and right in FIG. 2). In addition, the beams 2 constituting the column-beam frame section 3 on the lower side are displaced to the other side in the out-of-structure direction (left-right direction in FIG. 2). ing.

On the other hand, in the third embodiment, as shown in FIG. The beams 2 that constitute the column-beam frame section 3 on the lower side are also displaced to one side in the out-of-plane direction (left-right direction in FIG. 4). It is arranged as follows. In the upper and lower column-beam frame sections 3 that are adjacent in the vertical direction, each of the beams 2 is disposed so as to be displaced to the same side (to the right in FIG. 4) in the out-of-structure direction (left-right direction in FIG. 4). .

As a result, in the out-of-plane direction (the left-right direction in FIG. 4), the damping device 7 that is aligned with the beam 2 is disposed so as to be displaced to the other side in the out-of-plane direction. In the upper and lower column-beam frame sections 3 that are adjacent to each other in the vertical direction, the vibration damping devices 7 are disposed so as to be displaced to the same side (left side in FIG. 4) in the out-of-structure direction (left-right direction in FIG. 4). ing.

Since the brace 6 connects the upper beam 2 and the central attachment part 8 (the member to which the lower vibration damping device 7 is attached), the brace 6 is displaced to one side in the out-of-plane direction, as shown in FIG. The beam 2 is provided in an inclined position connecting the disposed beam 2 and the central mounting portion 8 disposed displaced toward the other side in the direction outside the structural plane. In the one shown in FIG. 4, the beam 2 is disposed to be displaced to the right, and the central mounting portion 8 is disposed to be displaced to the left, so that the lower part of the brace 6 is tilted to the left. Prepared by posture.

Incidentally, although FIG. 4 shows an example in which the beams 2 constituting the column-beam frame section 3 are displaced to the left and the vibration damping device 7 is displaced to the right, conversely, It is also possible to displace the beams 2 constituting the column-beam frame 3 to the right and dispose the damping device 7 to the left.

Other arrangements, such as an arrangement in which the beams 2 and the damping devices 7 are arranged side by side in the direction outside the structural plane (in the left-right direction in FIG. 3) in the upper and lower column-beam frame sections 3 that are adjacent in the vertical direction. The configuration is similar to the first embodiment.

1 Column 2 Beam 3 Column beam frame part 4 Structure (building)
6 Brace 7 Vibration damping device

Claims (3)

In a structure in which a column-beam frame section consisting of columns and beams is continuous in the vertical direction, a vibration-damping structure in which each of the column-beam frame sections is provided with a brace and a vibration damping device,
The brace is provided in a posture extending from the joint part side of the column-beam frame part on the upper side to the lower side,
The vibration damping device is connected to a lower end of the brace and is provided in a horizontally extending position,
In the vertically adjacent upper and lower column-beam frame sections, the beams constituting the lower column-beam frame section and the vibration damping device provided in the upper column-beam frame section are lined up in the outward direction of the structure. arranged ,
A vibration damping structure in which the vibration damping devices provided in the upper column-beam frame are placed at the same level as the beams that make up the lower column-beam frame. In the upper and lower column-beam frame sections that are adjacent in the vertical direction, the beams constituting the upper column-beam frame section are displaced to one side in the direction outside the structural plane, and the beams constituting the column-beam frame section on the lower side The constituent beams are displaced to the other side of the structure,
The braces and vibration damping devices provided in the upper column-beam frame are arranged vertically with the beams forming the upper column-beam frame, and are displaced to one side in the outward direction of the structure. The vibration damping structure according to claim 1. In a plurality of vertically adjacent column-beam frame sections, the beam, the brace, and the vibration damping device are arranged in a continuous layer state that alternately exists on one side and the other side in an out-of-plane direction. The vibration damping structure according to claim 1 or 2.

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