JP2002364205A - Damping apparatus of structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a damping apparatus of structure capable of securing a damping function to the structure and securing large space section between a column and a beam. SOLUTION: One end of the damping apparatus of structure is fixed to an upper structure 11, and the other is fixed to a lower structure 16. The damping apparatus comprises a rope 17 that is longer than the column 10, a main arm 13 whose one end is mounted to the column rotatably, and a sub arm 14 whose one end is connected to the other rotary end section of the main arm rotatably, and the other is fixed to the middle section of the rope. A buffer member 15 is included between the connection section of the main and sub arms, and the upper structure or the lower structure, and an urging member 30 for applying tension to the rope is included between the main arm or sub arm, and the upper structure or the lower structure.

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 a structure, and more particularly to a vibration damping device suitable for use in a structure such as a wooden building or a steel frame building.

[0002]

2. Description of the Related Art In recent years, various measures have been taken for structures such as wooden buildings and steel frames in order to suppress damage caused by vibrations such as earthquakes. As shown, a cushioning member (for example, an oil damper) 3 is provided between a pillar 1 and a supporting structure (for example, a beam, a ceiling, a floor, a foundation, etc.) 2 which is mounted above and below the pillar 1.
A technique has been proposed in which the vibration applied to the structure is attenuated early by the buffering action of the buffering member 3.

[0003]

However, such a conventional technique has the following problems to be improved.

That is, as described above, the cushioning member 3 is
If the pillars 1 and the support structure 2 are installed in a staggered manner, the space between the column 1 and the support structure 2 is occupied by the buffer member 3.

[0005] Such a problem is that the cushioning member 3 is
When installed on the wall portion of the structure, the effect is small, but when it is necessary to provide a window on the wall,
Alternatively, when the pillar 1 is provided at the center of the floor and the area around the pillar 1 is a floor, the installation space of the window is limited by the cushioning member 3, or the cushioning member 3 Is located above the floor, which causes a problem that the floor cannot be used effectively. In addition, in the case of wooden buildings, etc., the joints of the beam columns are also weak, and it is difficult to install dampers. It was also difficult to expect strength.

The present invention has been made in view of such a conventional problem, and has a large space between a pillar and a support structure to which the pillar is attached while ensuring a vibration damping function for a structure. It is an object of the present invention to provide a vibration damping device for a structure that can ensure the vibration.

[0007]

According to a first aspect of the present invention, there is provided a vibration damping device for a structure, comprising: a column of a structure; and an upper structure to which the column is attached. A vibration damping device provided between the lower structure and one end fixed to the upper structure, the other end fixed to the lower structure, and a rope longer than the length of the pillar. A main arm having one end rotatably attached to the pillar, and a sub arm having one end rotatably connected to another rotation end of the main arm and the other end fixed to an intermediate portion of the rope. A connection member between the main arm and the sub arm, and a buffer member interposed between the upper structure or the lower structure, and the main arm or the sub arm and the upper structure or the lower structure. During, before Characterized by comprising by interposing a biasing member that gives a tension to the rope. According to a second aspect of the present invention, there is provided a vibration damping device for a structure, wherein the main arm, the sub arm, and the cushioning member according to the first aspect are attached to an upper end of the pillar and an upper structure to which the upper end is attached. It is characterized by being provided between the body. Claim 3 of the present invention
2. The vibration damping device for a structure according to claim 1, wherein the main arm, the sub arm, and the cushioning member according to claim 1 are provided between a lower end of the pillar and a lower structure to which the lower end is attached. It is characterized by having been done. In the vibration damping device for a structure according to a fourth aspect of the present invention, the main arm, the sub arm, and the cushioning member according to the first aspect are attached to both ends of the pillar and each end thereof. It is provided between the upper structure and the lower structure. According to a fifth aspect of the present invention, in the structure vibration damping device, the buffer member according to any one of the first to fourth aspects is an oil damper. A vibration damping device for a structure according to a sixth aspect of the present invention is characterized in that the cushioning member according to any one of the first to fourth aspects is a viscoelastic body or an elastoplastic body. A structure vibration damping device according to a seventh aspect of the present invention is characterized in that the biasing member according to any one of the first to fourth aspects is an elastic body or an elastoplastic body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The structure vibration damping device 12 according to the present embodiment includes a structure column 10, an upper structure (beam) 11 to which the column 10 is attached, and a lower structure (lower beam or foundation) 16. A rope 17 having one end fixed to the upper structure 11 and the other end fixed to the lower structure 16, and having a length longer than the length of the pillar 10. A main arm 13 having one end rotatably attached to the pillar 10, one end rotatably connected to another rotating end of the main arm 13, and the other end fixed to an intermediate portion of the rope 17. A buffer member 15 interposed between the upper structure 11 and a connection portion between the main arm 13 and the sub arm 14 and the upper arm 11 and the main arm 13 or the sub arm 14 and the upper structure. 1 It has a basic structure which is interposed a biasing member 30 which gives tension to, the rope between.

Next, the main arm 13 will be described in detail.
0 on the bracket 18 provided on the side of the upper end
9 so as to be rotatable.

The sub-arm 14 has one end rotatably connected to the rotating end of the main arm 13 via a pin 20.

In the present embodiment, an oil damper is used for the buffer member 15, and one end of the oil
The other end is rotatably connected to a bracket 21 provided on the lower end surface of the beam 11 via a pin 22. And, this buffer member 15
May be made of an elasto-plastic member such as a coil spring instead of the oil damper, or may be made of a viscoelastic body such as a high damping rubber.

Further, the rope 17 is connected to the beam 11
Between a fixing member 23 mounted between the column 10 and a bracket 21 to which the cushioning member 15 is connected, and an anchor bolt 24 fixed to the base 16 near the lower end of the column 10. It is stretched over. One end of the sub-arm 14 is fixed in the middle of the rope 17, and one end of the sub-arm 14 is positioned below the main arm 13. And the beam 1
1, the urging member 30 is interposed. The urging member 30 is a compression spring, and urges the connecting portion of the sub-arm 14 and the main arm 13 downward to hold the rope 17 in a tight state without loosening.

With such a configuration, one end of the main arm 13 is supported on the pillar 10 via the pin 19, and one end of the sub arm 14 is
7 and the other end of the main arm 13 and the other end of the sub arm 14 are connected by pins 20. Therefore, the main arm 13 and the sub arm 14 maintain their pinching angles. It is kept in the state where it was done.

Here, when vibration is applied to the structure, for example, when the column 10 is tilted in the direction shown by the arrow (a) in FIG. 2, on the right side of the column 10 in FIG.
The pillar 10 and the beam 11 are relatively moved so that the included angle is narrowed, and on the left side of the pillar 10, the relatively moved such that the included angle is widened.

Here, since the main arm 13 and the sub arm 14 are maintained so that the angle between them is constant as described above, one end is fixed to a connecting portion of the main arm 13 and the sub arm 14. On the right side of the pillar 10, an external force in the pulling direction is applied to the cushioning member 15 on the right side of the pillar 10 as shown by an arrow (b) in FIG.
2, an external force in the compression direction is applied as shown by an arrow (c) in FIG. This is because the rope 17 forms a string-type toggle, and the movement amount of the support point 25 of the sub arm 14 is larger than the movement amount of the pin 19 in the direction of the arrow (a) on the right side of the pillar 10. This is because, on the left side of the pillar 10, the amount of movement of the support point 25 of the sub arm 14 is larger than the amount of movement of the pin 19 in the direction of the arrow (a). By such an action, the sub arm 14
The moving distance of the connecting portion (pin 20) with the main arm 13 is controlled by a toggle mechanism formed at a narrow angle by these sub-arms 14 and the main arm 13.
The moving amount in the horizontal direction indicated by the arrow (a) is amplified, and the amount of the amplified moving amount becomes the operation amount of the buffer member 15.

As described above, when the above-described external force is applied to each of the cushioning members 15, the cushioning members 15 are caused to expand and contract to generate a cushioning function. Vibration energy of the structure is absorbed. In addition, since the operation amount of the buffer member 15 is amplified with respect to the movement amount of the column 10, the energy absorbing action is amplified. As a result,
Vibration of the structure is suppressed.

The main arm 13 and the sub arm 14 constituting the vibration damping device 12 and the cushioning member 15
Is accommodated in a corner formed between the beam 10 and the upper part of the column 10, and a rope 17 supporting one end of the sub arm 14 is arranged along the column 10. Therefore, the space A formed between the pillar 10 and the beam 11 is largely opened. Therefore, even when the pillar 10 is arranged in the middle of the floor, the space around it can be largely opened, and the floor can be effectively used. In addition, since the rope 17 is configured to apply tension, the column 10 is applied with a compressive force accordingly. This has the same effect as increasing the weight of the structure, and when this system is applied to a traditional wooden building, the tilt restoring force is increased and the vibration energy absorption effect can be given. Becomes Furthermore, since the movement amount of the pillar 10 is amplified and applied to the buffer member 15, even if the main arm 13, the sub arm 14, or the mounting portion of the buffer member 15 is loose, This backlash is absorbed, and the operation of the buffer member 15 is reliably performed.

The various shapes, dimensions, and the like of the components shown in the above embodiment are merely examples, and can be variously changed based on design requirements and the like.

For example, as shown in FIG. 3, a main arm 13, a sub arm 14,
Further, it is also possible to install the cushioning member 15 between the lower end of the pillar 10 and a foundation (or a floor or a lower floor beam) 16 which is a lower structure. And although the said embodiment is also the same, in this vibration damping device 12, the said pillar 1
Since a large space around 0 can be secured,
As shown in FIG. 3, even when installed on the wall,
A large space can be secured between the columns 10, and as a result, the window 26 can be installed, or a large window can be installed.

Further, as shown in FIG. 4, the main arm 13, the sub-arm 14, and the cushioning member 15 constituting the vibration damping device 12 are connected to the lower end of the pillar 10 and a foundation (or a lower structure). It is also possible to install it between the floor 10 and the upper end of the pillar 10 and the beam (or ceiling) 11 as an upper structure.

Further, as shown in FIG. 5, one end of the sub arm 14 can be positioned above the main arm 13. In such a configuration, the urging member 30 needs to be a tension spring in order to tension the rope 17. That is, the type and installation position of the urging member 30 can be changed according to the installation state of the main arm 13, the sub arm 14, the cushioning member 15, and the rope 17. It may be installed so as to generate

Further, as shown in FIG. 6, the cushioning member 15 can be provided between a connecting portion between the main arm 13 and the sub arm 14 and a foundation 16 as the lower structure. The urging member 30 can be provided inside the buffer member 15.

As shown in FIGS. 8 and 10, in addition to the urging member 30, a support point 25 of the sub-arm 14 is provided.
In addition, it is possible to provide a second biasing member 31 for generating a tension on the rope 17, and FIGS.
As shown in FIG. 1, it is also possible to provide a second urging member 31 and omit the urging member 30. in this way,
By providing the second biasing member 31 at the support point 25 of the sub-arm 14, careless movement of the sub-arm 14 can be restrained, and wobbling of the apparatus can be suppressed.

[0024]

As described above, according to the vibration damping device for a structure according to the present invention, the main components of the vibration damping device are as follows.
It can be housed in a corner formed by a pillar and a support structure to which each end of the pillar is attached, or can be arranged along the pillar or the support structure, thereby providing A large space can be secured.
Therefore, even when the pillar is arranged in the middle of the floor, the space around it can be largely opened, and the floor can be effectively used. In addition, when vibration occurs in the structure, the buffer member of the vibration damping device can be reliably operated to reliably absorb the energy associated with the vibration, thereby ensuring the vibration damping function for the structure.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a main part showing an embodiment of the present invention.

FIG. 2 is a schematic front view of a main part for describing an operation of one embodiment of the present invention.

FIG. 3 is a schematic front view showing another embodiment of the present invention.

FIG. 4 is a schematic front view showing another embodiment of the present invention.

FIG. 5 is a schematic front view showing another embodiment of the present invention.

FIG. 6 is a schematic front view showing another embodiment of the present invention.

FIG. 7 is a front view of a main part showing one conventional example.

FIG. 8 is a schematic front view showing a modification of FIG.

FIG. 9 is a schematic front view showing still another modified example of FIG.

FIG. 10 is a schematic front view showing a modification of FIG.

FIG. 11 is a schematic front view showing still another modification of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pillar 2 Beam 3 Buffer member 10 Column 11 Upper structure (beam) 12 Damper 13 Main arm 14 Subarm 15 Buffer member 16 Lower structure (beam or foundation on lower floor) 17 Rope 18 Bracket 19 Pin 20 Pin 21 Bracket 22 Pin 23 Fixing Member 24 Anchor Bolt 25 Sub-Arm Support Point 26 Window 30 Biasing Member 31 Second Biasing Member A Space

Continuing from the front page (72) Inventor Hidenori Ishigaki 4-8-24 Kudanminami, Chiyoda-ku, Tokyo Academic corporation Nihon University (72) Inventor Ippei Hata 4-824, Kudanminami 4-chome, Chiyoda-ku, Tokyo School Within Nihon University (72) Inventor Genji Uozu 2-12-20 Nishihioki 2-chome, Nakagawa-ku, Nagoya-shi, Aichi F-term (in reference) 2U001, DG01 EA05 EA08 FA01 FA02 FA21 GA01 GA02 GA77 HB01 LA01 LA03 LA11 LA13 3J048 AA02 AC04 AD12 BC01 BC02 BE03 CB01 CB21 DA03 EA38

Claims (7)

[Claims] 1. A vibration damping device provided between a pillar of a structure and an upper structure and a lower structure to which the pillar is attached, wherein one end is fixed to the upper structure, and the other end is Is fixed to the lower structure, and a rope longer than the length of the pillar, a main arm having one end rotatably attached to the pillar, and one end at the other rotating end of the main arm. A sub-arm that is rotatably connected and the other end of which is fixed to an intermediate portion of the rope, and a cushioning member is provided between a connection portion between the main arm and the sub-arm and the upper structure or the lower structure. A vibration damping device for a structure, wherein a biasing member for applying tension to the rope is interposed between the main arm or the sub arm and the upper structure or the lower structure. . 2. The apparatus according to claim 1, wherein the main arm, the sub arm, and the cushioning member are provided between an upper end of the pillar and an upper structure to which the upper end is attached. A vibration damping device for a structure as described in the above. 3. The apparatus according to claim 1, wherein the main arm, the sub arm, and the cushioning member are provided between a lower end of the pillar and a lower structure to which the lower end is attached. A vibration damping device for a structure as described in the above. 4. The apparatus according to claim 1, wherein the main arm, the sub arm, and the cushioning member are provided between both ends of the pillar and an upper structure and a lower structure to which the respective ends are attached. The structure vibration damping device according to claim 1, wherein 5. The vibration damping device for a structure according to claim 1, wherein the buffer member is an oil damper. 6. The vibration damping device for a structure according to claim 1, wherein said buffer member is a viscoelastic body or an elasto-plastic body. 7. The structure vibration damping device according to claim 1, wherein said biasing member is an elastic body or an elasto-plastic body.