JPH0742809B2 - Out-of-plane deformation reduction device for flat damper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention reduces the deformation in the out-of-plane direction of a flat damper that deforms in the in-plane direction and absorbs the vibration energy input to the structure, and The present invention relates to a device for reducing the out-of-plane deformation of a flat damper for maintaining the same.

(Problems to be solved by the invention) In recent years, an elasto-plastic damper that is installed between structures insulated from each other and absorbs vibration energy stored in a structure during an earthquake by utilizing relative displacement between the two has been actively developed. In particular, as shown in FIG. 4, there is a tendency that a flat damper, which is easy to fit in a face material such as a wall and does not occupy a flat space, is often used.

Due to its shape, this flat damper functions only for relative displacement in the in-plane direction and has little plastic deformation capacity in the out-of-plane direction, so if both ends are fixedly connected to the structure, When an external force is applied in the outward direction, it is subjected to a forced deformation, which is inconvenient in terms of performance, as shown in FIG. Since this out-of-plane deformation may reduce the energy absorption capacity of the damper, it is necessary to devise a method for avoiding this forced deformation at the connection part.

The present invention has been made in view of the problem faced when mounting such a flat damper, and proposes a new device for suppressing the deformation due to the out-of-plane force.

(Means for Solving the Problems) In the present invention, when an external force is applied to the planar damper in the out-of-plane direction, the cross section is folded in a Z-shape and expands and contracts in a spring direction in a direction orthogonal to the deformation direction according to the displacement between both ends thereof. By forming a deformation absorbing plate having a shape, and following the relative displacement between the insulated structures connected to the planar damper to absorb this, the amount of out-of-plane deformation of the planar damper is reduced.

The deformation absorbing plate absorbs a large amount of the displacement by expanding and deforming at the time of relative displacement, and the out-of-plane deformation of the plane damper is suppressed to a slight elastic deformation.

Mounting flanges are continuously projected from both sides of the deformation absorbing plate and are joined to the flat damper and the structure at the mounting flanges.

(Example) The present invention will be described below with reference to the drawings illustrating an example.

As shown in FIG. 1, the out-of-plane deformation reducing device A of the present invention is
Planar damper D installed between the separated structures S and S
And the structural body S, and the relative displacement between the structural bodies S and S when the external force of the planar damper D acts on the planar damper D.
It absorbs instead of.

As shown in the figure, the out-of-plane deformation reducing device A has a cross-sectional shape that is normally folded in a Z shape, and when the out-of-plane direction force acts on the planar damper D, it is elastically deformed by elastically deforming the structure S. , A deformation absorbing plate 1 for absorbing relative displacement between S and S,
The deformation absorbing plate 1 is formed of a flat damper D and mounting flanges 2, 2 joined to the structure S, which are continuous with each other on both sides.

The embodiment shown in FIG. 1 is a case in which the out-of-plane deformation reducing device A is integrally formed. In this embodiment, as shown in FIG. 2, a shaped steel such as an angle is combined with a plate, and the end portion is formed by a bolt or the like. It is also formed by fixing by means.

The deformation absorbing plate 1 easily elastically deforms following the external force,
As shown in the figure, at the time of relative displacement, the relative displacement is absorbed by extending in the projecting direction of the mounting flanges 2, 2 as the distance between the end of the structure S and the planar damper D increases. The cross-sectional shape is not limited to the shape shown in the figure, and may be any structure having a spring that elastically deforms and expands and contracts in the direction of the mounting flanges 2, 2.

As shown in FIG. 1, this out-of-plane deformation reducing device A is rigid or close to the flat damper D and the structure S at the mounting flanges 2 and 2 in order to concentrate the deformation on the deformation absorbing plate 1. It is joined by the bolt 3 or the like.

In the illustrated embodiment, one mounting flange 2 is sandwiched on both sides by flat dampers D, D, and the other mounting flange 2 is welded to the structure S by a metal 4 embedded in the end face of the structure S by welding. The case is shown.

Further, in the drawing, by connecting the out-of-plane deformation reducing device A to a plane damper D arranged in the middle of the structure S of a vertical member such as a wall, that is, by arranging the shaft horizontally, the upper and lower structures S are arranged. Although an embodiment is shown in which it functions for relative displacement between S and S, and relative displacement in elevation, the out-of-plane deformation reduction device A is also used for absorbing relative displacement in a plane by orienting the axis vertically. To be done.

(Advantages of the Invention) The present invention is as described above, and is capable of easily deforming elastically by an external force in the out-of-plane direction of the flat damper to expand and contract to absorb the relative displacement in that direction. It is possible to reduce the load of the flat damper and maintain it without lowering the energy absorption capacity of the flat damper.

[Brief description of drawings]

FIGS. 1-I and II are vertical sectional views and elevation views showing examples of application of the present invention, FIG. 2 is a side view showing another production example of the present invention, and FIG. 3 is a modification of the present apparatus. Fourth vertical cross-sectional view showing the state
FIG. 5 is an elevational view showing an installation example of a flat damper, and FIG. 5 is a vertical cross-sectional view showing a deformed state thereof. A ... Out-of-plane deformation reducing device, 1 ... Deformation absorbing plate, 2 ... Mounting flange, D ... Planar damper, S ... Structure, 3 ...
… Bolts, 4… Hardware.

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Eiji Fukuzawa 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Shozo Maeda 1-2-7 Moto-Akasaka, Minato-ku, Tokyo No. Kashima Construction Co., Ltd.

Claims (1)

[Claims] 1. A device that is connected to a plane damper that absorbs the vibration energy of a structure by elastically plastically deforming in the in-plane direction and that reduces the deformation in the out-of-plane direction. A deformation absorbing plate having a Z-shaped cross-sectional shape, which expands in a spring type in a direction orthogonal to the deformation direction according to the amount of displacement when a directional force is applied, and a flat damper that is continuous on both sides of the deformation absorbing plate. An out-of-plane deformation reduction device for a flat damper consisting of a mounting flange joined to a structure.