JP2000027937A - Vibration control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration control device to use a direct acting damper even in a narrow installation spot. SOLUTION: A damper 16 is mounted on a building 14, a rod 26 is reciprocated along the wall surface of the building 14, and a sufficient stroke id ensured. One end of an arm 30 is rotatably coupled to the rod 26, and the other end of the arm 30 is rotatably coupled to the building 12. The two arms 30 draw a triangle and amplifies a relative movement amount between the buildings 14 and 12. When the buildings 14 and 12 are relatively moved by the relative movement amount, the amount is amplified by the arm 30, a moving direction is converted in a 90 deg. arc and the amount is transmitted to the rod 26 of the damper 16. This constitution causes reciprocation of the rod 26 to provide a damping force and controls the vibrations of the buildings 14 and 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vibration control device for suppressing vibration of a structure.

[0002]

2. Description of the Related Art As shown in FIG. 17, when a commonly used direct acting hydraulic damper 90 is disposed between a building 92 and a building 94, the stroke of a piston 96 is determined by the length of a cylinder 98. You. For example, when the distance between the building 92 and the building 94 is 3 L, the stroke of the hydraulic damper 90 can be ignored irrespective of the thickness of the cylinder 98, the thickness of the piston 96, and the size of the connection bearing 100 of the hydraulic damper 90. , Only L can be gained in one direction.

[0003] For this reason, the distance between buildings is 50 cm or less.
In a narrow installation area of only about 100 cm, a vibration control device cannot be configured using a highly reliable direct acting hydraulic damper, and a new damper needs to be developed.

[0004]

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a vibration control device that can use a linear motion damper even in a narrow installation place.

[0005]

According to the first aspect of the present invention, vibration is suppressed between a first structure and a second structure which are relatively deformed by an external force.

[0006] The damper is attached to the first structure, and the rod reciprocates along the wall surface of the first structure. Thus, by arranging the damper, a sufficient stroke of the rod can be secured.

[0007] One end of the arm is rotatably connected to the rod, and the other end of the arm is rotatably connected to the second structure. At this time, the arm draws an angle with respect to the wall surface of the second structure to amplify the relative movement amount between the first structure and the second structure.

For this reason, when the first structure and the second structure move relative to each other in the direction in which they come into contact with and separate from each other, the relative movement is amplified by the arm, the moving direction is changed by 90 °, and the rod of the damper is changed. Conveyed to. As a result, the rod reciprocates and exerts a damping force to control the vibrations of the first structure and the second structure.

Further, when the first structure and the second structure move relative to each other in parallel while facing each other, the movement amount is transmitted to the rod of the damper through the arm without being amplified, and the vibration is attenuated. Is done.

The second aspect of the present invention has the same basic configuration as that of the first aspect, but a pair of dampers is provided to increase the damping force. An arm is rotatably connected to the rod of the damper, and the other end of the arm is rotatably connected to a connecting portion attached to the second structure to form a triangle.

When the connecting portion approaches the first structure side, the triangle formed by the arms is crushed, the relative movement amount is amplified, the rods of the dampers on both sides are contracted, and simultaneously the damping force is exerted. Further, when the connecting portion moves away from the first structure side, the triangle formed by the arms rises, amplifies the relative movement amount, extends the rods of the dampers on both sides, and simultaneously exerts a damping force.

Further, when the connecting portion relatively moves in parallel with the first structure, the arm keeps the first shape while maintaining the triangular shape.
It moves parallel to the structure and contracts the rod of one damper and extends the rod of the other damper to exert a damping force.

According to the third aspect of the present invention, the viscoelastic body is accommodated in the accommodating portion provided in the first structure, and the viscoelastic body is provided so as to be movable in the vertical and horizontal directions. Is inserted.

Further, one end of an arm is connected to the resistor, and the other end of the arm is rotatably connected to the second structure. At this time, the arm is
The angle which amplifies the relative movement amount between the structure and the storage unit is drawn.

In this configuration, the damping force in the vertical and horizontal directions is applied to the resistor by using a viscoelastic body without using a direct-acting damper, thereby designing the vibration control device. The degree of freedom is increased.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a vibration control device 10 according to a first embodiment is arranged between a building 12 and a building 14 (usually, there is only an interval of 20 cm to 50 cm).

On a wall surface 14A of the building 14, a direct acting hydraulic damper 16 is disposed so as to face the wall surface 14A. The end of the cylinder 18 of the hydraulic damper 16 is rotatably attached to a bracket 22 projecting from the wall surface 14A via a rotation hinge 24.

The rod 26 of the damper 16 is installed so as to reciprocate on a plane parallel to the wall surface 14A. An arm 30 is rotatably connected to a distal end of the rod 26 via a rotating hinge 28.

Further, the tip of the arm 30 is
The arm 30 is rotatably connected to a rotation support 32 attached to the wall surface 12A, and the two arms 30 form an isosceles triangle having the rotation support 32 as a vertex.

Next, the operation of the vibration control device according to the first embodiment will be described.

As shown in FIG. 2, assuming that the buildings 12, 14 are relatively displaced in the direction of arrow A (horizontal direction) due to an earthquake or the like, as shown in FIG.
And the distance becomes larger.

For this reason, the isosceles triangle formed by the arm 30 rises as an acute triangle having the rotation bearing 32 at the apex, and the moving direction is changed by 90 °, and the damper 1 is turned.
6 are both extended equally. At this time, as shown in FIG. 5, the moving distance of the rotating hinge 28 (the distance L2 from the point a to the point b) is amplified with respect to the moving distance of the rotary bearing 32 (the distance L1 from the point A to the point B). Being bigger.

Therefore, a relationship of small deformation × large force = large deformation × small force is established, and the damper 16 suppresses the vibration of the buildings 12 and 14 by the small force.

On the other hand, as shown in FIG.
Is relatively displaced in the direction of arrow B (horizontal direction), the distance between the rotary bearing 32 of the vibration control device 10 and the wall surface 14A is reduced.

For this reason, the isosceles triangle constituted by the arm 30 falls down as an obtuse triangle having the rotation support 32 at the apex, and the moving direction is changed by 90 °, and the damper 16 is turned.
Both rods 26 are contracted equally. At this time, as shown in FIG. 5, the amplification factor of the moving distance of the rotating hinge 28 (the distance L4 from the point c to the point d) with respect to the moving distance of the rotary bearing 32 (the distance L3 from the point C to the point D) is , Building 1
Compared with the case where 2, 14 are relatively displaced in the direction of arrow A (horizontal direction), they are not so large.

This is achieved by rotating the bearing 32 around 90 °.
Depends on the angle drawn by the arm 30 whose vertex is
For example, this problem can be solved by separately providing a vibration control device in which the apex angle of the isosceles triangle formed by the arm 30 is acute. Note that one of the objects of the present invention is to convert the moving direction by 90 °, whereby the linear motion damper can be set in a narrow place.

As shown in FIG. 4, if the buildings 12, 14 are displaced relative to each other in the direction of arrow C (vertical direction) due to a direct earthquake or the like, the arm 30 of the vibration control device 10 keeps a triangular shape. While moving in parallel, the rod 26 of the lower damper 16 is contracted, and the rod 26 of the upper damper 16 is extended to exert a damping force.

It is also conceivable that the buildings 12, 14 are relatively displaced in a direction perpendicular to the plane of the paper, but this is done so that the direction of expansion and contraction of the rod 26 of the vibration control device 10 is perpendicular to the plane of the paper. It is a problem that can be solved by setting the damper.

At this time, the vibration control device 10 set as shown in FIG. 1 cannot exert a sufficient damping force. However, since the connecting portions are rotatable, the vibration control device 10 is locked, and the device is locked. It will not be damaged.

Further, in the present embodiment, the pair of dampers 16
The vibration control device 10 was configured as shown in FIG.
Independent vibration control devices 34, 36 with one damper 16
May be configured. Thus, the size of the device can be reduced. In this case, the arm 38 and the rod 2
Preferably, the intersection angle of 6 differs from the intersection angle of the arm 40 and the rod 26 by 90 °. Accordingly, when the upper rod 26 extends, the lower rod 26 contracts, so that they do not interfere with each other, and the stroke of the rod can be secured even in a narrow space.

In the vibration control device 42 shown in FIG.
Unlike the vibration control device 10 shown in FIG. 1, the tip of the arm 30 is connected to the wall surface 12A of the building 12 by the rotary bearing 44. Thereby, even with the torsional vibration of the building 12, the damping effect can be exhibited without breaking the device.

Next, a vibration control device according to a second embodiment will be described.

In the second embodiment, as shown in FIGS. 8 and 9, a pillar 48 is erected around a building 46.
, A beam member 50 of an H-shaped steel material is stretched over two layers. On the upper surface of the beam member 50, a casing 52 filled with a viscoelastic body (for example, silicone-based, acrylic-based, asphalt-based, and rubber-based) is disposed at predetermined intervals.

An elongated guide groove 54 is formed in the upper wall of the casing 52. In this guide groove 54,
A resistance shaft 56 is inserted movably upward and along the guide groove 54. By using a part of an adjacent building instead of the pillar 48, vibration between buildings can be suppressed.

The arm 60 is rotatably connected to the upper end of the resistance shaft 56 via a rotating hinge 58. The other end of the arm 60 is connected to the building 4 via a rotation bearing 62.
6. At this time, the adjacent arm 60
It draws an isosceles triangle with the rotation bearing 62 at the top,
The angle of the vertex is set to an angle that amplifies the relative movement amount between the building 46 and the resistance shaft 50, converts the movement direction by 90 °, and transmits the converted direction to the resistance shaft 56. The resistance shaft 56 is located at the center of the guide groove 54, that is, at the neutral position.

Next, the operation of the vibration control device according to the second embodiment will be described.

As shown in FIG. 10, if the building 46 and the beam member 50 are relatively displaced in the direction of arrow D due to an earthquake or the like, the distance between the rotary bearing 62 and the resistance shaft 56 located on the upper side of the drawing increases. .

For this reason, the isosceles triangle formed by the arm 60 rises as an acute triangle having the rotation bearing 62 as the apex, the moving direction is changed by 90 °, and the resistance shaft 56 moves along the guide groove 54. It moves greatly and exerts a large damping force.

At this time, the arm 60 of the vibration control device 64 located on the upper side of the drawing draws an obtuse triangle, the resistance shaft 56 does not move so much, and the amplification factor is small. Further, in the left and right vibration control devices 64, the arm 60 moves in parallel while maintaining the triangular shape, and the resistance shaft 56 moves along the guide groove 54 without amplifying the movement amount, and exerts a damping force. . Further, there is a case where the building 56 is relatively displaced in the vertical direction with respect to the beam member 50. At this time, the resistance shaft 56 moves up and down to exert a damping force. Further, as shown in FIG. 11, when the building 46 and the beam member 50 are relatively displaced in the direction of arrow E, the above-described 90
° Move in different directions.

As described above, as in the first embodiment, the resistance shaft 56 is provided with a three-dimensional damping function in the vertical and horizontal directions by using a viscoelastic body without using a linear motion damper. This increases the degree of freedom in designing the vibration control device.

In the vibration control device 66 shown in FIGS. 12 and 13, housings 70 and 72 filled with a viscoelastic material are arranged in a staggered manner in a housing 68 fixed to the upper surface of the beam member 50. I have. Resistance shafts 74 and 76 are inserted into the elongated storage portions 70 and 72, respectively, and can be moved vertically (horizontally) along the storage portions 70 and 72.

An arm 80 is rotatably connected to the upper end of the resistance shaft 74 via a rotating hinge 78. The other end of the arm 80 is connected to the building 46 via a rotation bearing 82. An arm 86 longer than the arm 80 is rotatably connected to the upper end of the resistance shaft 76 via a rotation hinge 84, and the other end is connected to the rotation bearing 8.
The building 46 is connected to the building 46 via a second connection 2.

The basic function of the vibration control device 66 is as follows.
Same as the vibration control device 64, except that the arm 8
By increasing the length of 6, the stroke of the resistance shaft 76 is increased, and the amplification factor of the movement amount is further increased.

As described above, in the present invention, by adjusting the angle and length drawn by the arm, it is possible to provide a mechanism corresponding to the vibration control request.

As shown in FIG. 14 to FIG.
The waist wall 124 of the frame 134 composed of the beam 20 and the beam 122
A rocker 130 supports a casing 128 of a damper 126 in a swingable manner, and a rod 130 capable of reciprocating up and down.
May be connected to the arm 132 rotatably connected to the arm 132.

As a result, the horizontal displacement of the frame 134 at the time of the earthquake can be converted into the vertical displacement to absorb the vibration.

[0047]

According to the present invention, the building can be provided with a vibration control function using a linear motion damper even in a narrow installation location.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state in which a vibration control device according to a first embodiment is mounted on a wall surface of a building in an upright position.

FIG. 2 is an explanatory diagram showing an operation state of the vibration control device according to the first embodiment.

FIG. 3 is an explanatory diagram showing an operation state of the vibration control device according to the first embodiment.

FIG. 4 is an explanatory diagram showing an operation state of the vibration control device according to the first embodiment.

FIG. 5 is a graph showing a movement amount amplification factor of the vibration control device according to the first embodiment.

FIG. 6 is an explanatory diagram showing a state in which a vibration control device according to a modification is mounted on a wall surface of a building.

FIG. 7 is an explanatory diagram showing a state in which a vibration control device according to another modification is attached to a wall surface of a building.

FIG. 8 is an explanatory diagram illustrating a state in which the vibration control device according to the second embodiment is attached to a building from an elevation.

FIG. 9 is a plan view illustrating a state in which the vibration control device according to the second embodiment is attached to a building.

FIG. 10 is an explanatory diagram showing an operation state of the vibration control device according to the second embodiment.

FIG. 11 is an explanatory diagram showing an operation state of the vibration control device according to the second embodiment.

FIG. 12 is an explanatory view illustrating a state in which a vibration control device according to a modified example is attached to a building from an elevation.

FIG. 13 is an explanatory diagram illustrating a state in which a vibration control device according to a modification is attached to a building in a plane.

FIG. 14 is an explanatory diagram illustrating a state in which a vibration control device according to a modification is mounted on a frame of a building.

FIG. 15 is an explanatory diagram illustrating a state in which a vibration control device according to a modification is mounted on a frame of a building.

FIG. 16 is an explanatory diagram illustrating a state in which a vibration control device according to a modification is mounted on a frame of a building.

FIG. 17 is an explanatory view showing an attached state of a conventional vibration control damper device.

[Explanation of symbols]

 12 Building (1st structure) 14 Building (2nd structure) 16 Damper 26 Rod 30 Arm 32 Rotation bearing 46 Building (2nd structure) 50 Building (1st structure) 52 Casing (storage part) 56 Resistance shaft (Resistance body) 60 Arm M Viscoelastic body

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Tatsuharu Ishimaru 4-11-17 Hanaguri, Soka City, Saitama Prefecture 72) Inventor Masaharu Kubota 2F, Sanbancho, Chiyoda-ku, Tokyo Tobishima Construction Co., Ltd. F-term (reference) 3J048 AA05 AB01 AC01 BD08 BE03 DA04 EA38

Claims (3)

[Claims] 1. A vibration control device which is disposed between a first structure and a second structure which are relatively deformed by an external force and suppresses vibration, wherein a rod reciprocates along a wall surface of the first structure. And a damper attached to the first structure, one end of which is rotatably connected to the rod, and the other end of which has an angle that amplifies a relative movement amount between the first structure and the second structure. An arm rotatably connected to the two structures. 2. A vibration control device disposed between a first structure and a second structure, which are relatively deformed by an external force and suppresses vibration, wherein the rod reciprocates along a wall surface of the first structure. A pair of dampers attached to the first structure facing each other, and one end of each of the dampers rotatably connected to the rod and the other end attached to the second structure so as to form a triangle. A pair of arms rotatably connected,
A vibration control device comprising: 3. A vibration control device disposed between a first structure and a second structure, which are relatively deformed by an external force and suppresses vibration, wherein: a storage unit provided in the first structure; And a resistor inserted into the viscoelastic body and movable in the vertical and horizontal directions, one end connected to the resistor, and the other end connected to the first structure and the second structure. A vibration control device comprising: an arm rotatably connected to the second structure at an angle that amplifies a relative movement amount with respect to the structure.