JP2022077688A - Vibration control structure of building - Google Patents

Abstract

To provide a technology which can reduce a cost and a size of a vibration control mechanism part while sufficiently absorbing the vibration energy of a building at the occurrence of an earthquake, and can use the vibration control mechanism part as a partition of a living room, in a vibration control structure of the building which is installed in a structure plane between upper/lower beams of the building.SOLUTION: In a vibration control structure 1 of a building being a cable-type vibration control mechanism part 10, the vibration control mechanism part 10 for absorbing the vibration energy of the building is installed in a structure plane 3 between upper/lower beams 4, 5 of the building, and the vibration control mechanism part 10 has a cable winding part 15 fixed to one side of the upper/lower beams 4, 5, and imparting resistance to the sending movement of a wound cable 11, and the cable 11 in which both end parts 11a of the cable 11 are fixed to the other side of the upper/lower beams 4, 5, and which is wound to the cable winding part 15 in a tensed state. In the structure plane 3, a plurality of the cable-type vibration control mechanism parts 10 are aligned in parallel in a state that the cables 11 are superimposed on one another in a front view.SELECTED DRAWING: Figure 1

Description

The present invention relates to a building vibration damping structure in which a vibration damping mechanism unit that absorbs the vibration energy of the building is installed in the structure between the upper and lower beams of the building.

A building vibration damping structure (see, for example, Patent Document 1) is known in which a vibration damping mechanism unit that absorbs the vibration energy of the building is installed in the structure between the upper and lower beams of the building. In the vibration damping structure of the building described in Patent Document 1 (particularly, paragraph 0064, see FIG. 15), the cable (cable 14) fixed and wound on one side of the upper and lower beams as the vibration damping mechanism portion. A cord wrapping portion (support member 122) that applies a resistance force (friction force) to the feed movement of the beam, and both ends are fixed to the other side of the upper and lower beams, and the cord wrapping portion (support member 122) is fixed. A cord-type vibration damping mechanism unit configured with a cord (14) wound around in a tense state is used. Further, in the vibration damping structure of the building described in Patent Document 1, a configuration in which one rope type vibration damping mechanism unit is installed in each of the predetermined structural surfaces of the building is adopted.
According to the vibration damping structure of the building using such a cord type vibration damping mechanism, it can be easily installed in a small installation space with a simple structure, and it is deformed into a column-beam structure due to an earthquake or the like. It is said that the vibration energy generated in the building can be absorbed by the frictional force generated between the cord and the support member when the above occurs.

JP-A-2009-236249 (paragraph 0064, FIG. 15)

However, in the conventional vibration damping structure of a building using the above-mentioned rope type vibration damping mechanism, a configuration in which one rope type vibration damping mechanism is installed in each of the predetermined structures in the building is adopted. Since the structure on which the cord-type vibration damping mechanism can be installed is limited, in order to sufficiently absorb the vibration energy of the building during an earthquake, the cords in each cord-type damping mechanism can be installed. And it is necessary to make the strength of the cord winding part very high. Therefore, there are problems such as high cost and large size of the cord type vibration damping mechanism.
In addition, when partitioning a living room in the structure where the cord-type vibration damping mechanism is installed, only one V-shaped or inverted V-shaped cord wound around the cord-wrapping portion is required. Since the gap is large, it is insufficient as a partition, so it was necessary to add another partition member.
In view of this situation, the main subject of the present invention is a building at the time of an earthquake in a building vibration damping structure in which a cord-type vibration damping mechanism unit that absorbs the vibration energy of the building is installed in the structure between the upper and lower beams of the building. While making it possible to sufficiently absorb the vibration energy of the above, we aim to reduce the cost and size of the cord type vibration damping mechanism, and provide the technology that can use the cord type vibration damping mechanism as a partition of the living room. At the point.

In the first characteristic configuration of the present invention, a vibration damping mechanism unit that absorbs the vibration energy of the building is installed in the structure between the upper and lower beams in the building.
The vibration damping mechanism portion is fixed to one side of the upper and lower beams, and the cord winding portion that adds resistance to the feed movement of the wound cord and both ends on the other side of the upper and lower beams. It is a vibration damping structure of a building which is a vibration damping mechanism unit of a cord type, which is fixed and has a beam wound around the beam winding portion in a tense state.
In the structure, a plurality of the cord-type vibration damping mechanism portions are arranged side by side in a state where the cords are overlapped with each other in a front view.

According to this configuration, as many cord-type vibration damping mechanisms as possible are densely packed in a state in which the cords stretched in a V-shape or an inverted V-shape are superposed on each other in the structure. Can be placed. As a result, when the column-beam frame is deformed due to an earthquake or the like, seismic energy can be absorbed by many cord-type vibration damping mechanisms, so that the cost of each cord-type vibration damping mechanism is low. It is possible to realize miniaturization and miniaturization.
Further, in the structure, many cords wound around the cord winding portions of each cord type vibration damping mechanism are present in a mesh shape, so a separate partition member should be provided. Instead, this mesh-like cord group can also be used as a partition of the living room.
Therefore, according to the present invention, in the vibration damping structure of a building in which a cable type vibration damping mechanism unit that absorbs the vibration energy of the building is installed in the structure between the upper and lower beams of the building, the vibration energy of the building at the time of an earthquake is sufficiently suppressed. While making it absorbable, it is possible to reduce the cost and size of the cord-type vibration damping mechanism, and to provide a technique in which the cord-type vibration damping mechanism can be used as a partition of a living room.

The second characteristic configuration of the present invention is that the cord winding portion is composed of a brake-equipped pulley device having a brake mechanism portion that applies rotational resistance to the pulley portion around which the cord is wound. It is in.

According to this configuration, by using a pulley device with a brake having a brake mechanism portion that applies a rotational resistance force to the pulley portion around which the cord is wound, the pulley can be fed and moved. On the other hand, since it is not necessary to prepare a configuration for adding resistance separately from the cord winding portion, it is possible to further reduce the cost and size of the cord winding portion.

The third characteristic configuration of the present invention is a plurality of the cords of one of the cord-type vibration damping mechanisms, as opposed to the cords of one of the cord-type vibration damping mechanisms, in the structure. The point is that the cords of are superimposed.

According to this configuration, the group of cords stretched between the upper beam and the lower beam in the structure has a finer gap in the state where each cord intersects with a plurality of other cords. It becomes a very small fine mesh. Therefore, by using such a fine mesh-like cord group as a partition of the living room, it is possible to realize a partition that can suitably block the field of view.

The fourth characteristic configuration of the present invention is a plurality of the ropes in a state in which the tensioning directions of the ropes in each of the plurality of rope-type vibration damping mechanism portions are parallel to each other in a plan view. The point is that the vibration damping mechanism is inclined with respect to the parallel installation direction.

According to this configuration, when a plurality of cord-type vibration damping mechanisms are arranged side by side in a state where the cords are overlapped with each other in a front view, many cords are arranged without buffering the cords. The type vibration damping mechanism can be arranged more densely. As a result, while realizing a high degree of design, it is possible to absorb the vibration energy of the building more sufficiently at the time of an earthquake, and at the same time, the cost and size of the cord-type vibration damping mechanism are further reduced, and the cord is concerned. The vibration damping mechanism can be used more effectively as a partition of the living room.

Front view of vibration damping structure in this embodiment Right side view of the vibration damping structure in this embodiment Plan view of vibration damping structure in this embodiment Enlarged view of the cord winding portion of the vibration damping structure in this embodiment

An embodiment of the vibration damping structure of the building according to the present invention will be described with reference to the drawings.
The vibration damping structure (hereinafter referred to as “main vibration damping structure”) 1 of the building shown in FIGS. It is configured by installing a cord-type vibration damping mechanism unit 10 as a vibration mechanism unit. Each of the cord-type vibration damping mechanism portions 10 includes a pulley device 15 with a brake (an example of a cord winding portion) and a cord 11 which is a flexible linear member such as a cable, a wire, or a rope. Has.

As shown in FIGS. 1 and 2, the pulley device 15 with a brake is fixed to the upper beam 4 and is configured to add a resistance force to the feed movement of the wound cord 11. Specifically, as shown in FIG. 4, it has a pulley portion 15A around which the cord 11 is wound, and a brake mechanism portion 15B that applies a rotational resistance force to the pulley portion 15A by frictional force or the like. It is configured as. As the pulley device 15 with a brake, a small one can be adopted at low cost.
In the present embodiment, the pulley device 15 with a brake is provided in the space above the ceiling panel 7, and the ceiling panel 7 has a cord 11 wound around the pulley device 15 with a brake. An opening (not shown) for insertion is provided.

On the other hand, as shown in FIGS. 1, 2 and 3, both ends 11a of the cord 11 are fixed to the lower beam 5 via a predetermined cord fixing bracket 12 or the like, and the upper beam 4 It is wound in a tense state around the pulley device 15 with a brake fixed to. Therefore, in the front view shown in FIG. 1, the cord 11 is stretched in an inverted V shape with the winding portion around the brake-equipped pulley device 15 as the apex. Here, in the front view shown in FIG. 1, in the inverted V-shaped cord 11 wound around the brake-equipped pulley device 15, the straight portion on the left side of the brake-equipped pulley device 15 is referred to as the first cord portion 11A. The straight portion on the right side of the brake-equipped pulley device 15 is referred to as a second cord portion 11B.
In the present embodiment, both end portions 11a of the cord 11 penetrate the floor slab 6 and are directly connected to the lower beam 5, but for example, the lower beam 5 and the floor slab 6 are connected to each other. In some cases, both ends 11a of the cord 11 may be fixed to the lower beam 5 via the floor slab 6 in a form of connecting to the floor slab 6.

In the vibration damping structure 1 as described above, when the column-beam frame is deformed due to an earthquake or the like, the lengths of the first pulley portion 11A and the second rope portion 11B are changed. The pulley 11 is fed and moved by the pulley device 15 with a brake, and the pulley portion 15A rotates. Then, the seismic energy is absorbed by the rotation resistance force added by the brake mechanism portion 15B to the rotation of the pulley portion 15A.

Further, in the vibration damping structure 1, a plurality of cord-type vibration damping mechanism units 10 are arranged at predetermined intervals in the structure 3 in a state where the cords 11 are overlapped with each other in the front view shown in FIG. It is set up. With this configuration, as many cord-type vibration damping mechanism units 10 as possible are densely arranged in the structure 3 in a state where the cords 11 stretched in an inverted V shape are overlapped with each other in the front view. be able to. Therefore, when the column-beam frame is deformed due to an earthquake or the like, the seismic energy is absorbed by many of the cord-type vibration damping mechanism units 10, so that each of the cord-type vibration damping mechanism units 10 Cost reduction and miniaturization are realized.

In the vibration damping structure 1, many ropes 11 wound around the brake-equipped pulley devices 15 of each of the many rope type vibration damping mechanism units 10 exist in a mesh pattern in the structure 3. Specifically, in the structure 3, in the front view shown in FIG. 1, the other cord-type vibration damping mechanism unit 10 has the other cord-type vibration damping mechanism unit 10 with respect to the cord 11 possessed by one cord-type vibration damping mechanism unit 10. The four cords 11 to have are superimposed. That is, with respect to the first cord portion 11A of one cord-type vibration damping mechanism unit 10, the second cord portion 11B of each of the four cord-type vibration damping mechanism units 10 adjacent to the left side is predetermined. It is superimposed side by side at intervals, and with respect to the second cord portion 11B of one cord-type vibration damping mechanism unit 10, the first of each of the four cord-type vibration damping mechanism units 10 adjacent to the right side. The cord portions 11A are superimposed side by side at predetermined intervals.
With this configuration, as shown in FIG. 1, many cords 11 wound around the brake-equipped pulley devices 15 of each of the many cord-type vibration damping mechanism units 10 are present in a mesh pattern in the structure 3. Will be done. Further, the group of cords 11 stretched between the upper beam 4 and the lower beam 5 in the structure surface 3 is further finely divided in a state where each cord 11 intersects with a plurality of other cords 11. It becomes a fine mesh with extremely small gaps. Therefore, in the inside of the structure 3, a partition capable of appropriately blocking the field of view is realized in a form in which the fine mesh-shaped cords 11 groups are used as a partition of the living room without separately providing a partition member.
Further, in such a vibration damping structure 1, since the cords 11 are arranged in a mesh pattern, a slight field of view can be secured. Therefore, if it is arranged in the structure surface 3 in front of the window on the outer peripheral portion of the building, the field of view to the outside through the window is secured through the cords 11 arranged in the mesh shape of the vibration damping structure 1. be able to.

In the vibration damping structure 1, in the plan view 3, in the plan view shown in FIG. 3, the tensioning directions A of the cords 11 in each of the plurality of cord type vibration damping mechanism units 10 are in a state of being parallel to each other. The direction is such that the cord-type vibration damping mechanism portion 10 is inclined with respect to the parallel direction X.
With this configuration, when a plurality of cord-type vibration damping mechanism units 10 are arranged side by side in a state where the cords 11 are overlapped with each other in the front view shown in FIG. 1, the cords 11 are buffered with each other in the structure 3. Many cord-type vibration damping mechanism units 10 can be arranged more densely without causing them. As a result, high designability is realized, and the vibration energy of the building at the time of an earthquake can be absorbed more sufficiently. Further, the cost and size of the cord-type vibration damping mechanism 10 can be further reduced, and the cord-type vibration damping mechanism 10 can be used more effectively as a partition of the living room.

[Another Embodiment]
Other embodiments of the present invention will be described. It should be noted that the configurations of the respective embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, the pulley device 15 with a brake is provided as the cord winding portion, but the cord winding portion adds resistance to the feed movement of the wound cord 11. Anything may be used, and for example, a hook-shaped member that generates a frictional force as a resistance force against the feed movement of the wound cord 11 may be provided as the cord winding portion.

(2) In the above embodiment, in the structure 3, in the front view shown in FIG. 1, the other four cord-type vibration damping mechanisms with respect to the cord 11 possessed by one cord-type vibration damping mechanism unit 10. The respective cords 11 of the unit 10 are superimposed, but for example, the number of superimposed locations of the other cords 11 with respect to one cord 11 can be appropriately changed, and may be one.

(3) In the above embodiment, in the plan view 3, in the plan view shown in FIG. 3, the tensioning directions A of the cords 11 in each of the plurality of cord-type vibration damping mechanism units 10 are parallel to each other. The direction is set to be inclined with respect to the parallel direction X of the plurality of cord-type vibration damping mechanism units 10, but for example, the tensioning directions A of the cords 11 of the respective cord-type vibration damping mechanism units 10 are made different from each other. It doesn't matter.

(4) In the above embodiment, the cord 11 is configured to be stretched in an inverted V shape in front view, but the lower beam is in a state where both ends 11a of the cord 11 are fixed to the upper beam 4. The cord 11 may be configured to be stretched in a V shape by winding the pulley device 15 with a brake fixed to the fifth in a tense state.

1 Building vibration damping structure 3 Inside the structure 4 Upper beam 5 Lower beam 10 Cord-type vibration damping mechanism (vibration damping mechanism)
11 Wire 11a End 15 Brake-equipped pulley device (wire winding)
15A Pulley part 15B Brake mechanism part A Stretching direction X Parallel installation direction

Claims (4)

A vibration damping mechanism that absorbs the vibration energy of the building is installed in the structure between the upper and lower beams in the building.
The vibration damping mechanism portion is fixed to one side of the upper and lower beams, and the cord winding portion that adds resistance to the feed movement of the wound cord and both ends on the other side of the upper and lower beams. It is a vibration damping structure of a building which is a vibration damping mechanism unit of a cord type, which is fixed and has a beam wound around the beam winding portion in a tense state.
A vibration damping structure of a building in which a plurality of the rope type vibration damping mechanism units are arranged side by side in a state where the ropes are overlapped with each other in a front view. The vibration damping of the building according to claim 1, wherein the cord winding portion is composed of a pulley device with a brake having a brake mechanism portion that applies a rotational resistance force to the pulley portion around which the cord is wound. Construction. A claim in which a plurality of cords possessed by the other cord-type vibration damping mechanism unit are superimposed on the cord possessed by one of the cord-type vibration damping mechanism units in the front view. The vibration damping structure of the building according to item 1 or 2. In the structure, in a plan view, the plurality of the cord-type vibration damping mechanism portions are arranged side by side in a state in which the stretching directions of the cords in each of the plurality of the cord-type vibration damping mechanism portions are parallel to each other. The vibration damping structure of a building according to any one of claims 1 to 3, which is considered to be a direction inclined with respect to a direction.

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