JPH0584754U - Damping damper - Google Patents

Abstract

(57) [Summary] [Structure] A pair of second plates 12 are arranged to face each other on both sides of the first plate 11, and the tip end of the steel rod 13 fixed to the first plate is set to the second plate. It is loosely inserted into the hole 14 formed in the plate. [Effect] When the first plate and the second plate are displaced relative to each other, the steel rod plastically deforms to absorb the vibration energy and damp the vibration. In addition, the overall thickness can be made as thin as the wall thickness, the installation space can be saved, and it can be easily incorporated into a building, and can be easily manufactured and replaced, which is inexpensive.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vibration damper used for damping the vibration of a building, and more particularly to a vibration damper called a steel damper that absorbs vibration energy by utilizing plastic deformation of steel.

[0002]

[Prior Art]

 Various types of vibration dampers have been put to practical use in buildings to absorb the vibration energy during an earthquake and damp the vibrations. A typical example is the plastic deformation of steel materials. There is a so-called steel damper. This is because, for example, as shown in FIGS. 6 and 7, a plurality of steel rods 1 are arranged at intervals between the outer peripheral portions of the base plate 2 and the top plate 3 and their both ends are welded or the like. The base plate 2 and the top plate 3 are fixed to each other and are fixed to the two members of the building which are capable of relative displacement.

In the conventional steel damper as described above, when a horizontal relative displacement occurs between two members of a building during an earthquake, the base plate 2 and the top plate 3 become horizontal as shown by the chain line in the figure. When the steel rods 1 are displaced in the direction and subjected to bending deformation, the ends of the steel rods 1 are plasticized, whereby the vibration energy is absorbed and the vibration damping effect is obtained.

[0004]

[Problems to be solved by the device]

 By the way, since the above-mentioned conventional steel damper has a configuration in which a plurality of steel rods 1 are arranged at intervals between the outer peripheral portions of the base plate 2 and the top plate 3 which are circular, respectively, they must be miniaturized. However, in the case of high rigidity and high yield strength, the number of steel rods 1 is large and the steel rods are thick, so the plates 2 and 3 also have large diameters. When installing, it was necessary to secure sufficient space, and there were cases where it could not be installed at the desired position due to space restrictions.

The present invention has been made in view of the above circumstances, and provides an effective steel material damper which can be sufficiently miniaturized and can be easily incorporated in any position of a building and can be replaced. The purpose is to

[0006]

[Means for Solving the Problems]

 The present invention is a vibration damping damper that is used between two parts of a building that can be displaced relative to each other in order to damp the vibration of the building. Fixed to the other member, and to a pair of second plates which are fixed to both sides of the first plate and are opposed to each other on both sides of the first plate, and fixed to the first plate. It is characterized in that a tip end portion which projects toward the second plate side and is a free end has a steel rod which is loosely inserted into a hole formed in the second plate.

[0007]

[Action]

 The damping damper of the present invention is a kind of so-called steel damper that utilizes plastic deformation of steel, and the first plate and the second plate are used by being fixed to two members that are relatively displaced in a building. Be done. When a relative displacement occurs between the two members and a relative displacement occurs between the plates, the steel rod provided between the plates is plastically deformed by bending, which absorbs the vibration energy. Vibration damping effect is obtained.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are views showing a schematic configuration of a steel damper 10 which is an embodiment of the present invention. As shown in FIG. 1, the steel damper 10 includes a first plate 11, a pair of second plates 12 arranged on both sides of the first plate 11 and facing each other with a space therebetween, and the steel plate damper 10 is provided between the plates 11. The obtained steel rod 13 is a main constituent element.

Each of the plates 11 and 12 is made of a steel plate, and the first plate 11 has a plurality of steel bars 13 (four in the illustrated example, eight in upper and lower two rows in total). Penetrates. The steel rods 13 are welded and fixed in a state of protruding to both surface sides of the first plate 11, both ends of the steel rods 13 are free ends, and the tips of the steel rods 13 are respectively It is loosely inserted in the hole 14 formed in the second plate 12.

A mounting plate 15 is welded to the upper portion of the first plate 11, and a connecting member 16 is fastened to the mounting plate 15. Further, a mounting plate 18 is sandwiched below the second plate 12 via a spacer 17, and a connecting member 19 is welded to the mounting plate 18. Both the connecting members 16 and 19 are made of H-shaped steel, and the steel damper 10 fixes the connecting members 16 and 19 to two members which can be displaced relative to each other in the building, that is, in FIG. As shown in the figure, the lower side connecting member 19 is fixed to the beam 20, and the upper side connecting member 16 is fixed to the upper portion of the pillar 22 through the brace 21 so that the connecting member 19 is incorporated into the building. It is being used. The connecting members 16 and 19 may be omitted to fix the mounting plates 15 and 18 directly to the brace 21 and the beam 20, or the mounting plates 15 and 18 and the spacer 17 may be omitted. The plates 11 and 12 may be directly fixed to the brace 21 or the beam 20 by welding or the like.

In the steel damper 10 that is used by being incorporated in a building as described above, the first plate 11 is displaced along with the upper portion of the column 22 when interlayer displacement occurs during an earthquake or the like, Since the second plate 12 is displaced together with the beam 20, a relative displacement is generated between the second plate 12 and the first and second plates 11 and 12. Then, each steel rod 13 fixed to the first plate 11 and having only the tip end engaged with the second plate 12 undergoes bending deformation and is plastically deformed, whereby vibration energy is absorbed. Vibration damping effect is exhibited. At this time, since the tip end of the steel rod 13 is loosely inserted into the hole 14 of the second plate 12, the axial displacement due to the bending deformation of the steel rod 13 is not restricted, and an unreasonable force is applied to each part. Is not added.

The above-mentioned steel damper 10 has a configuration in which the steel rod 13 is provided between the first plate 11 and the pair of second plates 12 arranged on both sides thereof so as to face each other. Can be thin enough to be as thick as a normal wall, which allows it to be freely installed in the desired location of the building without any restrictions on installation location. Further, since the plates 11 and 12 and the steel rod 13 are the main components, the structure is simple, so that the manufacturing is easy and the cost is low.

The rigidity and the yield strength of the above-mentioned steel damper 10 are obtained by increasing or decreasing the diameter and the number of the steel rods 13, the interval between the plates 11 and 12 (hence the length of the steel rod 13) and the like. Since it can be set freely, it goes without saying that they can be set appropriately in consideration of the assumed strength of earthquake motion, response characteristics of the building, allowable deformation amount, and the like.

In the above embodiment, the steel rod 13 is fixed to the first plate 11 by welding, but as shown in FIG. Alternatively, the nut 25 may be screwed from both sides of the first plate 11 so as to be tightened and fixed. Further, in the above-mentioned embodiment, the steel rod 13 penetrating the first plate 11 is used to fix the intermediate portion thereof so that both ends of the steel rod 13 are projected to the second plate 12 side. Of course, the base ends of different steel rods may be fixed to both sides of the first plate 11, respectively. Further, the assembling form of the steel damper in the building can be appropriately changed by, for example, installing it on the lower surface of the beam 20 as shown in FIG. The steel material damper 30 in FIG. 5 uses a total of 12 steel rods 13. Further, reference numeral 35 in FIG. 5 is a precast concrete slab as a wall, and a brace 36 is incorporated in the precast concrete slab 35.

[0015]

As described in detail above, the vibration damper of the present invention has the second plate facing each other on both sides of the first plate, and is made up of a steel rod fixed to the first plate. Since the tip is loosely inserted into the hole formed in the second plate, the vibration energy is absorbed by the plastic deformation of the steel rod and the overall thickness is reduced to about the wall thickness. As a result, it is possible to achieve a sufficient size reduction compared with conventional steel dampers, save the installation space, and make it easy to incorporate into buildings, and at the same time, it is easy to manufacture and replace, and it is also inexpensive. , Has the advantage.

[Brief description of drawings]

FIG. 1 is a sectional view of a steel damper according to an embodiment of the present invention.

FIG. 2 is a side view of the damper.

FIG. 3 is a diagram showing an installation example of the damper.

FIG. 4 is a sectional view of a steel damper according to another embodiment of the present invention.

FIG. 5 is a view showing another installation example of the steel damper of the present invention.

FIG. 6 is a side view of a conventional steel damper.

FIG. 7 is a horizontal sectional view of the damper.

[Explanation of symbols]

 10 Steel Damper (Vibration Damper) 11 First Plate 12 Second Plate 13 Steel Rod 14 Hole 30 Steel Damper (Vibration Damper).

Claims (1)

[Scope of utility model registration request] 1. A vibration damper for use in a structure, which is interposed between two members capable of relative displacement of a building, for damping the vibration of the building, the first damper being fixed to one of the members. No. 2 plate, a second plate fixed to the other member and facing each other on both sides of the first plate, and a second plate fixed to the first plate. And a steel rod loosely inserted into a hole formed in the second plate, the tip end projecting toward the plate side and being a free end.