JPH0579220A - Frame incorporated damping device - Google Patents

Abstract

PURPOSE:To prevent vibration of walls to optimize the damping action of a damping device by fixing one side of a wall to a beam within a space enclosed by poles and beams, and attaching the other side to the beam with a space therebetween, and interposing a viscoelastic damper and a resilient plastic damper between each side and a pole and between a bottom side and the beam, respectively. CONSTITUTION:When a structure 1 is vibrated in the directions of the arrows A, B by earthquakes or wind, etc., vibrations are generated between a beam 3 and a wall 5 and in the directions of the arrows A, B relative to each other, and as long as the vibrations are small, a viscoelastic member 12 located between the attaching members 10, 11 of a viscoelastic damper 6 provided between a pole 2 and a wall 5 on each side is deformed to absorb the energy of the vibrations. As the vibrations in the directions of the arrows A, B are increased to such a degree as cannot be absorbed by the viscoelastic member 12 of the viscoelastic damper 6 alone, the energy absorber 16b of the vibration energy absorption grid 16 of a resilient plastic damper 7 provided between a lower beam 3 and a lower wall 5 is plastically deformed in the directions of the arrows A, B to absorb the energy of the vibrations. Absorption of the vibration energy by the viscoelastic damper 6 is continued also in the latter case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame-incorporated type vibration damping device which can be incorporated into a column or beam portion of a structure to exert a vibration damping effect.

2. Description of the Related Art Recently, various types of vibration damping devices have been proposed in order to suppress the shaking generated in a structure due to an earthquake, wind, or the like, but many of them have been incorporated in the foundation of the structure. However, in addition to such a method, if there is a vibration damping device capable of absorbing vibration in each layer of the structure, even if the vibration damping performance of each individual device is relatively small, it can effectively work. Development was desired.

Therefore, the walls of each floor are formed on the columns with a gap, and the walls are connected to the beams via viscoelastic members and elasto-plastic members. A frame-incorporated type vibration damping device has been proposed in which a viscoelastic damper absorbs the vibration while the vibration is small, and an elastic-plastic damper absorbs the vibration when the vibration increases. However, if the wall is not fixed to the pillar in this way, there is a risk that the wall will swing in an out-of-plane direction perpendicular to the wall surface of the wall during an earthquake, so some sort of steady rest is necessary. However, if the wall is firmly fixed to the column, the horizontal movement of the wall with respect to the beam in the event of an earthquake will be hindered, and there will be an inconvenience that proper vibration damping performance cannot be exhibited. SUMMARY OF THE INVENTION It is an object of the present invention to provide a frame built-in type vibration damping device capable of exhibiting appropriate vibration damping performance while preventing the wall from swinging in the out-of-plane direction in order to solve the above-mentioned drawbacks. It is a thing.

[0002]

That is, the present invention has a plurality of columns (2) and beams (3), and among these columns and beams, a wall (5) is provided between adjacent columns and beams. , A predetermined gap (9) is formed between the adjacent columns, one of the walls is connected to one beam, and the other is connected to the other beam via an elasto-plastic damper (7). A viscoelastic damper (6) is provided between the side portion on the free end side of the wall and the column to provide a steady rest (18) for preventing the runout of the wall in the out-of-plane direction.

According to the present invention, the wall (5) has the steady rest (1) by the viscoelastic damper (6) in the event of an earthquake.
By 8), the beam (3) is supported so as to be movable in the horizontal direction while being prevented from vibrating in the out-of-plane direction such as the directions of arrows C and D.

[0003]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a diagram showing an embodiment of a frame-incorporated type vibration damping device according to the present invention, FIG. 2 is a plan view showing an example of a viscoelastic damper, FIG. 3 is a front view showing an example of an elasto-plastic damper, and FIG. FIG. 4 is a side view of FIG. 3.

As shown in FIG. 1, the structure 1 has pillars 2 standing upright at a predetermined interval, and a beam 3 is formed between the pillars 2 so as to connect the pillars 2 to each other. It is installed horizontally. In the space surrounded by the pillars 2 and 2 adjacent to each other in the horizontal direction and the beams 3 and 3 adjacent to each other in the vertical direction, a concrete wall 5
Are provided so as to hang down from the upper beam 3 to the lower beam 3 in the figure, and the wall 5, the surrounding columns 2 and the lower beam 3 are provided.
A gap 9 is formed between the lower edge 5 and the lower edge 5 of the wall 5e.
An elastic-plastic damper 7 is provided between the wall 5 and the beam 3 so as to connect the wall 5 and the beam 3. ..

The elasto-plastic damper 7 has base plates 15, 15 as shown in FIGS. 3 and 4.
The upper side of each base plate 15 in the figure is attached to the wall 5 side, and the lower side in the figure is attached to the beam 3 side. Each base plate 15,
As shown in FIG. 4, the vibration energy absorption gratings 16 and 16 are provided between the two 15 in the wall thickness direction, the base plate 15,
The vibration energy absorbing grid 16 is fixed in a form of connecting 15 and has a plurality of slits 16a formed in the vertical direction in the figure, and a plurality of energy absorbers 16b are formed in the vertical direction by the slits 16a. By the way, in order to prevent the wall 5 from vibrating in an out-of-plane direction at right angles to the paper surface in the figure at the free end side of the wall 5, that is, both side edge portions 5c and 5c on the lower end side in FIG. 1
8 and 18 are provided, and the steady rest 18 is composed of a viscoelastic damper 6, as shown in FIG. As shown in FIG. 2, the viscoelastic damper 6 has a base plate 8 on the wall 5 side.
Mounting members 10 and 10 having an L-shaped cross section, which are fixed via
Are provided in such a manner that the member mounting surfaces 10a and 10a are opposed to each other and extend in a direction perpendicular to the paper surface in the drawing, and the mounting member 11 having a T-shaped cross section is provided between the member mounting surfaces 10a and 10a.
Are provided so that the member mounting surfaces 11a, 11a face the member mounting surface 10a of each mounting member 10 and extend in the direction perpendicular to the plane of the drawing. The right side of the mounting member 11 in the drawing is fixed to the column 2 via the base plate 13, and the viscoelastic member 12 made of a viscoelastic material is interposed between the member mounting surfaces 10a and 11a in the direction perpendicular to the paper surface of the drawing. In FIG. 1, the mounting surfaces 10a and 11a are vertically connected to each other.

Since the structure 1 and the like have the above-described structure, when the structure 1 is vibrated in the directions of arrows A and B in FIG. 1 due to an earthquake or wind, the beam 3 and the wall 5 are separated. Arrow A between
Although relative vibration is generated in the B direction, as long as the vibration is small, it is provided between the column 2 and the wall 5 on both sides of FIG.
The viscoelastic member 12 between the mounting members 10 and 11 of the viscoelastic damper 6 shown in FIG. Further, when the vibration in the directions of arrows A and B becomes large and the viscoelastic member 12 of the viscoelastic damper 6 cannot absorb the vibration, the beam 3 and the wall 5 in the lower part of FIG. The energy absorber 16b of the vibration energy absorbing grid 16 of the elasto-plastic damper 7 provided between the two is plastically deformed in the directions of arrows A and B in FIG. 3 to absorb the energy. Even in this case, the operation of absorbing the vibration energy by the viscoelastic damper 6 is continued. At this time, due to the vibration caused by the earthquake, a force acts on the wall 5 in an out-of-plane direction perpendicular to the plane of FIG. 1 about the upper beam 3 in the figure. However, as shown in FIG. 2, the lower end of the wall 5 on the free end side in the drawing is allowed to move in the horizontal directions A and B by the viscoelastic member 12, as shown in FIG. However, since the movements in the directions C and D, which are the out-of-plane direction and are orthogonal to the wall surface 5f, are restricted by the mounting members 10 and 11, the wall 5 is allowed to move in the horizontal direction while the wall 5 is allowed to move. The vibration of 5 in the out-of-plane direction, that is, in the directions of arrows C and D, is prevented in advance.

[0007]

As described above, according to the present invention,
A plurality of columns 2 and beams 3 are provided, and among these columns and beams, a wall 5 is provided between adjacent columns and beams so as to form a predetermined gap 9 between the adjacent columns, and One of the walls is connected to one of the beams, and the other is connected to the other of the beams via an elasto-plastic damper 7, and between the side portion on the free end side of the wall and the pillar, the out-of-plane direction of the wall. Steady rest 1 to prevent runout
8 is configured by using the viscoelastic damper 6, the wall 5 is prevented from vibrating in the out-of-plane direction such as the arrow C and D directions by the steady rest 18 by the viscoelastic damper 6 in the event of an earthquake. 3 is supported so as to be movable in the horizontal direction, and an appropriate vibration damping operation can be performed by the viscoelastic damper 6 and the elasto-plastic damper 7.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of a frame-incorporated vibration damping device according to the present invention,

FIG. 2 is a plan view showing an example of a viscoelastic damper,

FIG. 3 is a front view showing an example of an elasto-plastic damper,

FIG. 4 is a side view of FIG.

[Explanation of symbols]

 1 …… Structure 2 …… Column 3 …… Beam 5 …… Wall 6 …… Viscoelastic damper 7 …… Elastic-plastic damper 9 …… Gap 18 …… Stabilizer

Claims (1)

[Claims] 1. A plurality of pillars and beams, wherein among these pillars and beams, a wall is provided between adjacent pillars and beams so as to form a predetermined gap between the adjacent pillars and beams, One of the walls is connected to one beam, and the other is connected to the other beam via an elasto-plastic damper, and between the side portion on the free end side of the wall and the column, an out-of-plane direction of the wall. A frame built-in type vibration damping device configured by providing a steady rest for preventing the steady runout using a viscoelastic damper.