JP2927309B2 - Building vibration control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping device for attenuating vibration between buildings in a building caused by an earthquake, wind, or the like.

[0002]

2. Description of the Related Art In a building or the like, a wall is installed between a floor surface and a ceiling for a partition or the like. Also, especially in high-rise buildings, in order to suppress the vibration of the building due to earthquake, wind, etc.,
A damping device using a damping material made of a rubber-like elastic material or the like is mounted between the wall and the ceiling (upper part of the story) or the floor (lower part of the story). As an example of the vibration damping device, a vibration damping material such as a rubber-like elastic material is fixed between rigid bodies such as a plurality of steel plates, and the vibration damping material is sheared by a relative displacement between an upper layer and a lower layer of a building. Those that absorb vibration energy are used. In this case, displacement between stories of the building due to vibration, wind, or the like may occur in the vertical direction, the horizontal direction, or the front-back direction depending on the structural conditions of the building, the type of vibration source, and the like. Therefore, in the conventional vibration damping device utilizing the shear deformation of the vibration damping material, the vibration damping material is mounted in such a posture that the direction of the shear deformation of the vibration damping material and the main direction of the relative displacement generated between the upper layer and the lower layer substantially coincide with each other. Have been.

FIG. 14 is a front view showing an example of a conventional inter-story vibration damping device of the above type, and FIG. 15 is a line 1 shown in FIG.
It is a longitudinal cross-sectional view along 5-15. 14 and 15
In FIG. 7, a partition wall 83 is provided between an upper layer (ceiling) 81 and a lower layer (floor) 82 forming a building hierarchy. The upper side of the wall 83 has two right and left vibration dampers 9
The lower side of the wall 83 is also connected via two right and left vibration dampers 90, 90. In the illustrated example, the vibration damping device is provided on the upper side and the lower side of the wall 83. However, it can be provided on only one of the upper side and the lower side. It is also possible to provide on the side. The number and arrangement of the vibration damping devices can be appropriately selected.

Each of the vibration damping devices 90 includes two steel plates 85,
It has a structure in which a rubber-like elastic damping material (damping material) 84 is integrally fixed by baking or the like between 86, and one steel plate 85 is fixed to the upper layer 81 (or the lower layer 82) by bolts 87. The other steel plate 86 is fixed to the upper side (or lower side) of the wall 83 by bolts 88. In the illustrated example, the respective damping members 84 and the steel plates 85 and 86 fixed to both side surfaces thereof are arranged substantially vertically so that the upper and lower damping members 84 are located in the same plane as the wall 83. . Each vibration damping material 84 absorbs vibration energy mainly by its shear deformation, and is subjected to shear deformation when the steel plates 85, 86 on both sides are relatively displaced in the vertical direction Y or the horizontal direction X (perpendicular to the drawing). It is configured to absorb vibration energy.

[0005]

However, in the above-mentioned conventional inter-story damping device, the direction of the vibration displacement generated between the stories of the building due to the earthquake or wind is not fixed, but includes displacements in a plurality of directions. And the direction of displacement generally changes, the displacement in the direction different from the shear direction of the damping material between the upper layer 81 and the lower layer 82, that is,
When a displacement having a component in the direction perpendicular to the wall 83 (Z direction) occurs, the displacement cannot be absorbed only by the vibration damping material 84, and the wall 83 itself and the mounting portion of the vibration damping device 90 (the steel plate 85) , 86 itself) must be absorbed. As a result, excessive force is applied to the damping material 84,
There is a problem to be solved that not only the vibration damping effect becomes insufficient, but also the durability of the vibration damping device decreases.

[0006] The present invention has been made in view of such technical problems, and an object of the present invention is to provide a vibration damping material that is vibrated in a direction different from a direction in which elastic deformation (mainly, shear deformation) is possible. Another object of the present invention is to provide a building vibration damping device capable of preventing an excessive force from being applied to the vibration damping material, ensuring a sufficient vibration damping effect, and improving the durability of the device.

[0007]

SUMMARY OF THE INVENTION The present invention relates to an inter-story vibration damping device which is deformed by a displacement between a wall and a ceiling or a wall and a floor installed between stories of a building and attenuates vibration transmitted between stories. In this configuration, the in-plane displacement of the wall is damped by elastic deformation of the damping material, and the out-of-plane displacement of the wall is damped by displacement of the rotating part and elastic deformation of the damping material. Thereby, the above object is achieved. Preferably, high damping rubber is used as the vibration damping material, and a joint utilizing deformation of rubber can be used as the rotating part.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a front view showing the inside of a story of a building having an inter-story vibration damping device according to an embodiment of the present invention, FIG. 2 is a single perspective view of the vibration damping device shown in FIG. 1, and FIG. FIG. 3 is a longitudinal sectional view taken along line 3-3 shown in FIG. 1 and 3, an upper layer (ceiling) 11 forming a building level
Between the lower layer (floor) 12 and a partition 13
Is installed. The lower side of the wall 13 is fixed to the lower layer 12 by a plurality of fasteners 14 from the front and back.
On the other hand, the upper side of the wall 13 is connected to the upper layer 11 via the vibration damper 15. In the example shown in the figure, the upper side of the wall 13 is connected to the center at two places by the vibration damping device 15, but the number and arrangement of the vibration damping devices 15 can be appropriately selected.

In FIG. 2 and FIG.
A shear deformation portion 19 formed by fixing rubber-like elastic materials (vibration damping materials) 18, 18 between both surfaces of the middle plate 16 and the inner surfaces of the outer plates 17, 17 by baking or the like; It comprises rotating parts (hinge parts) 20 and 21 provided above and below the deforming part 19. In the illustrated example, the two outer plates 17, 1
7 is formed of one molded member 24 having a forked (U-shaped) portion 22 and a single flat plate portion 23. The rotating portions 20 and 21 are formed of a cylindrical rubber-like elastic material having an axis parallel to the shear deformation portion 19. The upper rotating part 20 is for connecting a connecting plate 25 fixed to the upper layer 11 by bolting or embedding to the middle plate 16 so as to be rotatable. Further, the lower rotating portion 21 connects the connecting plate 26 fixed to the wall 13 by bolting or embedding to the outer plates 17, 17.
This is for connecting to a forming member 24 having a rotational displacement. The connecting parts of the rotating parts 20 and 21 are also fixed to the mating member by baking or bonding.

FIG. 3A is a longitudinal sectional view showing an attached state of the vibration damping device 15, and FIG. 3B is a view showing the displacement of the wall 13 in the out-of-plane direction (the Z direction perpendicular to the wall 13). It is a longitudinal cross-sectional view showing the state in which it occurred. As shown in FIG. 3A, each of the vibration damping devices 15 is attached such that the shear deformation portion 19 and the rotating portions 20 and 21 are located in the same plane as the wall 13. As shown in the figure, the vibration damping device 15 is integrated as a whole by baking or bonding a rubber-like elastic material, so that the vibration damping device 15 is mounted by connecting the upper connection plate 25 to the upper layer (ceiling) 11 and the lower connection plate 25 to the lower layer. It can be performed simply by fixing the connection plate 26 to the wall 13 by bolting or embedding.

Therefore, from the state of attachment shown in FIG.
The building vibrates due to an earthquake, wind, etc., and upper 11 and lower 12
When a relative displacement is generated between the vibration damping material (rubber-like elastic material), the displacement in the in-plane direction of the wall 13, that is, the displacement in the vertical direction indicated by the arrow Y and the displacement in the horizontal direction indicated by the arrow X ) Vibration energy is absorbed by the vertical and horizontal shearing deformation of 18,18. In addition, the displacement of the wall 13 in the out-of-plane direction, that is, the displacement in the front-rear direction (the direction perpendicular to the wall 13) indicated by the arrow Z, as shown in FIG. Rotational displacement and the damping material 1
Vibration energy is absorbed by the shearing deformation of 8,18. The rubber-like elastic damping members 18 may be natural rubber or general synthetic rubber.
If high-damping rubber is used, great vibration damping performance can be obtained.

According to the inter-story damping device described above, the displacement of the wall 13 in the in-plane direction (X, Y directions) is controlled by the damping members 18, 1,
8 and the displacement of the wall 13 in the out-of-plane direction (Z direction) is suppressed by the displacement of the rotating parts 20 and 21 and the deformation of the damping members 18, 18. When displacement occurs between layers due to wind or wind, the energy of vibration is applied to the displacement in any direction without exerting an excessive force on the mounting portions of the damping members 18 and 18 and the damping device 15. It became possible to absorb effectively. In addition, the durability of the vibration damping device 15 including the vibration damping members 18 and 18 could be significantly improved. Furthermore, damping material 1
8, 8 and the rotating parts 20, 21 are made of rubber-like elastic material, so that there is no sliding part, so that a maintenance-free vibration damping device can be configured, and the vibration damping device can be unitized and compact. Became.

FIG. 4 is a perspective view showing another example of the structure of the rotating parts 20 and 21, and FIG. 5 is an axial sectional view of FIG. In the configuration shown in FIGS. 1 to 3, the rotating parts 20 and 21 are formed only of the rubber-like elastic material. However, as shown in FIGS. 4 and 5, the rotating parts 20 and 21 have a shaft 28 and a hollow cylindrical shape. A rubber-like elastic material 30 fixed to the outer jacket member 29 by baking or the like can be used. In the example shown in the figure, a superplastic rubber 30A is used as the rubber-like elastic material 30, and both sides of the rubber-like elastic material 30 are covered with rubber 30B, 30B.
The structure of holding by B is used. FIG.
When the rotary hinge of FIG. 5 is used for the vibration damping device 15 of FIGS. 1 to 3, the connecting plate 25 and the intermediate plate 16, or the forming member 24 and the connecting plate 26 Can be rotationally displaceable via the rubber-like elastic material 30 by fixing by welding, bonding or screwing. Therefore, even when the rotating hinge of FIGS. 4 and 5 is used, the aforementioned FIGS.
The same operation and effect as those of the embodiment can be obtained.

FIG. 6 is a perspective view showing still another example of the structure of the rotating parts 20, 21. As shown in FIG. As shown in FIG. 6, as the rotating parts 20 and 21, a shaft member 32 having a rectangular cross section is fixed through the center part of a columnar rubber-like elastic material 31. The first hinge plate 33 is fixed to the first hinge plate 33 with screws or the like.
A rotating hinge having a structure in which a second hinge plate 34 is fixed at a position facing the hinge plate 33 by baking or bonding or the like can be used. The first and second hinge plates 3
3, 34 are the middle plate 16 and the connecting plate 2 shown in FIGS.
5, or it can be used as it is as the molded member 24 and the connecting plate 26, or these members can be connected by screws or the like. Therefore, the rotary hinge of FIG. 6 can also be connected via the rubber-like elastic member 31 so as to be rotatable, so that the same operation and effect as those of the above-described embodiment of FIGS. .

FIG. 7 is a partial perspective view showing a modified example of the rotary hinge of FIG. 7 uses a rubber-like elastic material 37 fixed between an inner jacket 35 and an outer jacket 36, and passes through the inside of the inner jacket 35 to form a belt-shaped shaft member 38.
Is fixed. In the illustrated example, the shaft member 38
Is fixed to the inside of the inner jacket 35 by welding or the like in a state where the reinforcing member 39 is connected. Then, the projecting portions at both ends of the shaft member 38 are fixed to the first hinge plate 33 (FIG. 6) by screws or the like, and the jacket 36 is fixed to the second hinge plate 34 (FIG. 6).
6 can be used in the same manner as in the case of the rotating hinge of FIG. Therefore, the rotary hinge of FIG. 7 can also be connected so as to be rotatable via the rubber-like elastic member 37, and the same operation and effect as those of the above-described embodiment of FIGS.

FIG. 8 is a front view showing the inside of a story of a building having an inter-story vibration damping device according to another embodiment of the present invention, and FIG. 9 is a single perspective view of the vibration damping device shown in FIG. 10 is an axial sectional view in a state where the vibration damping device of FIG. 9 is attached,
FIG. 11 is a longitudinal sectional view taken along line 11-11 shown in FIG. 8 and 11, a partition wall 13 is provided between an upper layer (ceiling) 11 and a lower layer (floor) 12 forming a building level. The lower side of the wall 13
From the front and back, it is fixed to the lower layer 12 by a plurality of fasteners 14. On the other hand, the upper side of the wall 13 is connected to the upper layer 11 via the vibration damping device 40. In the example shown in the figure, the upper side of the wall 13 is connected by the vibration damping device 40 at two places in the center, but the number and arrangement of the vibration damping devices 40 can be appropriately selected.

In FIG. 9 and FIG.
0, vibration damping members 61 and 62 made of rubber-like elastic material are fixed to both sides of the inner diameter surface of the outer jacket 45 of the hollow cylindrical member by baking or the like,
The first shaft member 42 is fixed to the center of one damping member 61 by baking or the like, and the second shaft member 43 is fixed to the center of the other damping member 62 by baking or the like. The protruding distal end 66 of the shaft member 42 is rotatably connected around a vertical shaft 63 provided on the upper layer (ceiling) 11, and the second shaft member 43
Are connected rotatably about a vertical axis 44 provided on the wall 13. In the illustrated example, the damping members 61 and 62 are fixed to the inner diameter surface of the hollow cylindrical member 45 with a predetermined distance L therebetween.

The columnar damping material 41 is mounted substantially horizontally (laterally) as shown in the figure. Therefore, a bracket 46 having a shaft portion 64 is fixed to the upper layer 11 with a bolt 49 or the like.
Of the shaft portion 64 is rotatably fitted to the lower end portion of the shaft portion 64 and is prevented from falling off by a ring member 65 or the like. On the other hand, the projecting distal end portion 48 of the second shaft member 43 is
It is rotatably fitted to a shaft 51 formed at the upper end of a collar 50 fixed to the wall 13 with bolts 49 or the like.
That is, the vibration damping device 40 is connected to the upper layer 11 and the wall 13 via rotatable rotating portions formed on both sides of the vibration damping materials 61 and 62. Thus, the upper layer (ceiling) 11
And the wall 13 are rotatable about vertical axes (rotating portions) 44 and 64, and elastically deformable in three-dimensional directions at rubber damping members 61 and 62 made of rubber-like elastic material. Are linked by

FIG. 11A is a longitudinal sectional view showing a state in which the vibration damping device 40 is attached, and FIG. 11B is a diagram showing displacement of the wall 13 in an out-of-plane direction (Z direction perpendicular to the wall 13). It is a longitudinal cross-sectional view showing a state where the occurrence of the phenomenon occurs. When the building vibrates due to an earthquake, wind, or the like from the mounting state of FIG. 11A and a relative displacement occurs between the upper layer 11 and the lower layer 12, displacement in the in-plane direction of the wall 13, that is, arrow Y Vibration energy is absorbed by the vertical displacement shown by the arrow and the horizontal displacement shown by the arrow X by the vertical and horizontal elastic deformation of the vibration damping materials (rubber-like elastic materials) 61 and 62. Also, wall 1
3, that is, the displacement in the front-rear direction (direction perpendicular to the wall 13) indicated by the arrow Z, as shown in FIG. 11B, the rotational displacement (vertical axis 44) of the vibration damping device 40. And rotation (rotation about the vertical axis) and elongation (elastic deformation of the damping members 61 and 62) absorb vibration energy. In addition,
The rubber-like elastic damping members 61 and 62 may be natural rubber or general synthetic rubber. However, if a high-damping rubber is used, a large damping performance can be obtained.

FIG. 12 shows the second shaft member 4 in FIG.
It is a fragmentary longitudinal cross-sectional view which shows the other example of a structure of the rotating part of the 3 projecting front-end | tip part 48. In FIG. 12, a rubber bush 55 in which a rubber-like elastic material 54 is fixed by baking or the like between a concentric hollow cylindrical inner jacket 52 and an outer jacket 53 is used as a rotating unit. The rubber bush 55 is fixed to the second shaft member 43 by fixing the outer jacket 53 to the projecting distal end portion 48 of the second shaft member 43 by welding or the like. Then, by fixing the inner jacket 52 of the rubber bush 55 with a bolt 56 or the like, the vibration damping device 40 is rotatably connected to the wall 13 via the rubber-like elastic material 54. Further, the rubber bush 55 as shown in FIG.
The shaft 53 can be used as a rotating part of the protruding tip 66 of the shaft member 42.
6 and the inner jacket 52 is fixed to the shaft portion 64.
As described above, when the rotating joint made of a rubber-like elastic material such as the rubber bush 55 is used for each rotating portion, vibration can be suppressed when displacement occurs between the upper layer 11 and the wall 13 due to an earthquake, wind, or the like. Each of the rotating parts 44 and 63 of the device 40 can also obtain a certain level of vibration energy absorption effect (damping effect).

The displacement in the in-plane direction (X and Y directions) of the wall 13 is also suppressed by the elastic deformation of the damping members 61 and 62 by the inter-story damping device described with reference to FIGS. The displacement of the wall 13 in the out-of-plane direction (Z direction) is
The vibration can be damped by the displacement around 63 and the elastic deformation of the damping members 61 and 62.
Similarly to the case of the embodiment, when a displacement occurs between floors of the building due to an earthquake, wind, or the like, it is impossible to attach the damping members 61 and 62 and the mounting portion of the damping device 40 to displacement in any direction. It has become possible to effectively absorb the energy of vibration without acting on the force. In addition, vibration damping materials 61 and 62
The durability of the vibration damping device 40 including the above was significantly improved. Further, since the vibration damping members 61 and 62 are formed of rubber-like elastic material, a maintenance-free vibration damping device having no sliding portion can be formed, and the vibration damping device can be unitized and made compact. became.

FIG. 13 is a longitudinal sectional view of an essential part showing another example of the structure of the vibration damping device 40 of FIG. In FIG. 13, a rubber-like elastic damping material 69 is fixed to the inner diameter surface of a hollow cylindrical outer jacket 68 by baking or the like, and a second shaft member 70 (FIG. (Corresponding to the second shaft member 43 in the middle) is fixed by baking or the like. The protruding distal end portion 48 of the second shaft member 70 is connected to the wall 13 by a rotating portion having substantially the same structure as the rotating portion 44 in FIG. On the other hand, a stay 71 corresponding to the first shaft member 42 in FIG. 10 is formed integrally with the outer jacket 68 at the other end of the outer jacket 68. The tip portion 72 of the stay portion 71 can be rotated by a rotating portion having substantially the same structure as the rotating portion 63 in FIG. 10 to a shaft portion fixed to the upper layer 11 (see a shaft portion 64 in FIG. 10). Connected. With the vibration damping device shown in FIG. 13, the same operation as in the embodiment of FIGS.
The effect can be achieved. In the vibration damping device of FIG. 13 as well, a rotating portion made of a rubber-like elastic material as shown in FIG. 12 can be used as each of the rotating portions 44 and 63, and the same operation and effect as described above can be obtained.

In each of the above embodiments, the case where the vibration damping devices 15 and 40 are installed between the upper side of the wall 13 and the upper layer (ceiling) has been described as an example. The present invention can be similarly applied to a case where a vibration damping device is mounted between the lower side and the floor 12 or a case where the vibration damping device is mounted to both the upper side and the lower side of the wall 13, and the same operation and effect can be achieved. Further, the number and arrangement of the vibration damping devices can be appropriately selected.

[0024]

As is apparent from the above description, according to the present invention, the deformation caused by the displacement between the wall and the ceiling or the displacement between the wall and the floor installed between the floors of the building and the vibration transmitted between the floors are attenuated. In the inter-layer vibration damping device, the displacement in the in-plane direction of the wall is damped by elastic deformation of the damping material,
Since the displacement of the wall in the out-of-plane direction is controlled by the displacement of the rotating portion and the elastic deformation of the vibration damping material, the vibration in the direction different from the direction in which the vibration damping material can be elastically deformed (mainly shear deformation) is reduced. On the other hand, there is provided a hierarchical vibration damping device for a building which can prevent an excessive force from being applied to the damping material, can secure a sufficient damping effect, and can improve the durability of the device. In the above configuration, if the high damping rubber is used as the vibration damping material, and the joint using the deformation of the rubber is used as the rotating portion, the above-mentioned effect can be more efficiently achieved.

[Brief description of the drawings]

FIG. 1 is a front view showing the inside of a building to which an embodiment of an inter-level vibration damping device to which the present invention is applied is attached.

FIG. 2 is a perspective view of the vibration damping device shown in FIG.

FIG. 3 is a longitudinal sectional view of a wall portion inside the building of FIG. 1;

FIG. 4 is a perspective view showing another example of the structure of the rotating unit of the vibration damping device of FIG. 2;

FIG. 5 is an axial sectional view of a rotating unit of FIG. 4;

FIG. 6 is a perspective view showing still another example of the structure of the rotating unit of the vibration damping device of FIG. 2;

FIG. 7 is a partial perspective view showing a structural example in which a part of the rotating unit in FIG. 6 is changed.

FIG. 8 is a front view showing the inside of a building to which another embodiment of the inter-story vibration damping device to which the present invention is applied is attached.

9 is a perspective view of the vibration damping device shown in FIG.

FIG. 10 is a longitudinal sectional view showing an attached state of the vibration damping device of FIG. 9;

FIG. 11 is a longitudinal sectional view of a wall portion inside the building of FIG. 8;

12 is a partial longitudinal sectional view showing another example of the structure of the rotating unit of the vibration damping device shown in FIG.

13 is a longitudinal sectional view showing a structural example of a part of the vibration damping device shown in FIG.

FIG. 14 is a front view showing the inside of a building to which a conventional inter-level vibration damping device is attached.

FIG. 15 is a longitudinal sectional view of a wall portion inside a building taken along a line 15-15 shown in FIG. 14;

[Explanation of symbols]

 Reference Signs List 11 upper layer (ceiling) 12 lower layer (floor) 13 wall 15 damping device 16 middle plate 17 outer plate 18 damping material (rubber-like elastic material) 19 shear deformation portion 20 rotating portion 21 rotating portion 28 shaft (rotating portion) 29 outer jacket Member (rotating portion) 30 Rubber-like elastic material (rotating portion) 31 Rubber-like elastic material (rotating portion) 32 Shaft member (rotating portion) 35 Inner jacket (rotating portion) 36 Outer jacket (rotating portion) 37 Rubber-like elastic material (rotating) Part) 38 Shaft member (rotating part) 40 Vibration suppression device 42 First shaft member 43 Second shaft member 44 Vertical shaft (Rotating part) 45 Outer jacket 51 Shaft part (Rotating part) 55 Rubber bush (Rotating part) 61 Damping Vibration material 62 Damping material 63 Vertical axis (rotating part) 68 Outer jacket 69 Damping material 70 Second shaft member 71 Stay part X In-plane direction of wall Y In-plane direction of wall Z Out-of-plane direction of wall (perpendicular to wall) Direction)

Claims (3)

(57) [Claims] An inter-level vibration damping device which is deformed by displacement between a wall and a ceiling or a wall and a floor installed between levels of a building to attenuate vibration transmitted between levels,
The displacement in the in-plane direction of the wall is damped by elastic deformation of the damping material, and the displacement in the out-of-plane direction of the wall is damped by displacement of a rotating part and elastic deformation of the damping material. Level control device between buildings. 2. The inter-story vibration damping device of a building according to claim 1, wherein said damping material is high-damping rubber. 3. The vibration damping device between buildings in a building according to claim 1, wherein said rotating portion utilizes deformation of rubber.