JP6936722B2 - Vibration damping device - Google Patents

Description

The present invention relates to a vibration damping device.

Conventionally, in a multi-layered building such as an apartment or office building, the vibration damping damper installed in the building absorbs and attenuates the seismic energy (vibration energy) acted during the earthquake to reduce the response of the building. There is. In addition, such vibration damping dampers include history dampers that utilize the yield strength of steel materials and the frictional resistance of slip materials, viscous dampers such as oil dampers that utilize the viscous resistance of viscoelastic bodies, and shearing of viscoelastic bodies. Viscoelastic dampers that utilize resistance are often used.

Further, between the upper and lower vibration-damping studs such as H-shaped steel, an inner steel plate having an end fixed to one vibration-damping stud and an outer steel plate having an end fixed to the other vibration-damping stud are alternately laminated. A viscous elastic damper is provided between the adjacent inner and outer steel plates with a viscoelastic body sandwiched between them, and a diagonal cane is provided between the upper and lower vibration studs and the upper and lower beams. A vibration structure has been proposed and put into practical use (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3).

Japanese Unexamined Patent Publication No. 2005-314917 JP-A-2002-004634 Japanese Unexamined Patent Publication No. 10-140873

However, in general, the vibration damping damper is provided so as to attenuate the vibration energy in the horizontal direction, and the current situation is that there are very few vibration damping devices that act in the vertical direction. For example, in a frame having a large protrusion length, it is required to control the vibration in the vertical direction, and a vibration damping device capable of controlling the vibration in the vertical direction has been strongly desired.

In view of the above circumstances, it is an object of the present invention to provide a vibration damping device capable of suitably attenuating vibration energy in the vertical direction.

To achieve the above object, the present invention provides the following means.

The vibration damping device of the present invention has a cross-shaped plate arranged with one end connected to one of the upper member and the lower member with the axial direction directed in the vertical direction, and the upper member and the lower member. One end is connected to the other member of the member, and the cross-shaped plate is extended in the vertical direction so that the plate surfaces face each other, and a viscoelastic body is formed between the cross-shaped plate and the plate surface of the cross-shaped plate. It is characterized in that it is configured to include a plurality of outer plates arranged so as to be interposed.

In the vibration damping device of the present invention, an excellent damping effect of vertical vibration can be obtained.

It is a front view which shows the vibration damping device which concerns on one Embodiment of this invention. It is the X1-X1 line arrow view of FIG. 1, and is the cross-sectional view of the vibration damping device which concerns on one Embodiment of this invention. FIG. 1 is a view taken along the line X2-X2 of FIG. 1, which is a cross-sectional view of a vibration damping device according to an embodiment of the present invention. It is a figure which shows the superiority of the vibration damping device which concerns on one Embodiment of this invention.

Hereinafter, the vibration damping device according to the embodiment of the present invention will be described with reference to FIGS. 1 to 4.

The vibration damping device of the present embodiment is, for example, a vibration damping device installed between the upper member and the lower member of the frame of a building (structure) to suitably attenuate the vibration energy in the vertical direction.

Specifically, as shown in FIGS. 1 to 3, the vibration damping device A of the present embodiment has one of an upper member (not shown) and a lower member (not shown) with the axis O1 direction directed in the vertical direction. The cross-shaped plate 1 as a core material is arranged by connecting one end portion 1a to the member of the above member, and the one end portion 2a is connected to the other member of the upper member and the lower member, and the cross-shaped plate 1 and each other are connected to each other. It is configured to include a plurality of outer plates 2 extending in the vertical direction O1 so that the plate surfaces face each other, and arranged with a viscoelastic body 3 interposed therebetween with the plate surface of the cross-shaped plate 1. Has been done.

Further, the outer plate 2 has a viscoelastic body 3 interposed between both sides (one surface and the other surface) of the plate surfaces of the four plate portions extending in all directions around the axis O1 of the cross-shaped plate 1. It is arranged. That is, the vibration damping device A of the present embodiment is configured to include one cross-shaped plate 1 and eight flat plate-shaped outer plates 2.

The eight outer plates 2 are provided by connecting one end 2a side and integrally connecting to the other member. Further, as means for connecting the one end portions 1a and 2a of the cross-shaped plate 1 and the outer plate 2 to one member and the other member, for example, a mounting bracket 4, a splice plate 5, and a filler plate 6 are used as appropriate. You can select it.

In the vibration damping device A of the present embodiment having the above configuration, the viscoelastic body 3 is sandwiched between the cross-shaped plate 1 and the outer plate 2, so that vibration energy acts on the building due to an earthquake or the like. When a relative vertical displacement occurs between the upper member and the lower member, the cross-shaped plate 1 and the outer plate 2 are respectively displaced in the vertical direction, and the viscoelastic body 3 is deformed.

At this time, the viscoelastic body 3 can attenuate the vibration in the vertical direction by, for example, converting the vibration energy into heat and absorbing it due to its deformation.

Further, by forming the core material in a cross shape, it is possible to prevent the viscoelastic body 3 from being deformed with respect to the interlayer deformation in the horizontal direction.

Therefore, in the vibration damping device A of the present embodiment, as shown in FIG. 4, the vibration energy in the vertical direction can be suitably damped, and excellent vertical vibration damping performance is imparted to the building or the like in which the vibration damping device A is installed. It becomes possible to do.

Although one embodiment of the vibration damping device according to the present invention has been described above, the present invention is not limited to the above one embodiment and can be appropriately modified without departing from the spirit of the present invention.

1 Cross-shaped plate 1a One end 2 Outer plate 2a One end 3 Viscoelastic body 4 Mounting bracket 5 Splice plate 6 Filler plate A Vibration damping device O1 Axis

Claims (1)

A cross-shaped plate arranged with one end connected to one of the upper member and the lower member with the axial direction directed in the vertical direction.
One end is connected to the upper member and the other member of the lower member, and the cross-shaped plate is extended in the vertical direction so that the plate surfaces of the cross-shaped plate face each other and the plate surface of the cross-shaped plate and the plate surface of the cross-shaped plate. A vibration damping device characterized in that it is configured to include a plurality of outer plates arranged with a viscoelastic body interposed therebetween.

Images