JPH0686773B2 - Damper - Google Patents

Description

TECHNICAL FIELD The present invention relates to a damper that absorbs vibration energy received by a building due to an earthquake or the like.

(Prior Art) Conventionally, as an example of use of a damper for a structure, its use for a seismic isolation structure has been increased, and various dampers have been developed.

Most of these are viscous dampers using a viscous body, cylinder type oil dampers, elasto-plastic dampers using mild steel, and the like.

(Problems to be Solved by the Invention) However, since viscous dampers and oil dampers require maintenance and are difficult to design, it is difficult to expect a large energy absorption capacity.

In addition, the oil damper has limited directionality and its energy absorption capacity is not so large. Further, the conventional elasto-plastic damper using a mild steel rod or the like has not only a large energy absorption capacity, but also has a design problem such as a complicated shape and a large size.

The present invention has been proposed in order to solve the above-mentioned conventional problems, and an object thereof is to provide a damper that has an extremely large energy absorption capacity and can be easily handled and designed.

(Means for Solving the Problems) A damper according to the present invention has one end connected to one of structural members oppositely installed, and the other end together with a displacement of the structural member via a plurality of guide bolts. , A plurality of splice plates connected so as to slide in mutually opposite directions, and a plastic deformable body or a viscoelastic body which is interposed between the splice plates and plastically deforms with the displacement of the structural member. It is configured with.

(Embodiment) Hereinafter, the present invention will be described with reference to an illustrated embodiment. Figs. 1 and 2 show a damper A according to the present invention. In the drawings, reference numerals 1 and 2 are splice plates, and reference numeral 3 is shown. Is a plastically deformable body or a viscoelastic body.

Reference numerals 4 and 5 are structural members that are installed opposite to each other and to which the damper A is attached, and are, for example, steel beams, steel columns, or walls of a building.

The splice plates 1,1 are attached to both sides of the structural member 4 by bolting them with a plurality of mounting bolts 6, ..., The splice plates 2,2 are attached to both sides of the structural member 5 with a plurality of mounting bolts 6 ,. It is attached by bolting with.

Horizontally elongated guide holes 7, ... Are formed in the upper and lower ends of the splice plates 2, 2 at regular intervals in the horizontal direction.

Further, a plurality of guide bolts 8, which can penetrate the guide holes 7, ...
... are projected in the horizontal direction at regular intervals. The guide bolts 8, ... Penetrate through the guide holes 7, ..., And fixing nuts 9 ,.

Further, between the splice plate 1 and the splice plate 2, plastic deformable bodies such as lead or viscoelastic bodies 3, 3 are interposed.

In such a structure, when a horizontal shearing force Q acts between the structural members 4 and 5 in the direction shown in the figure during an earthquake or the like, the structural members 4 and 5 together with the splice plates 1 and 2 guide holes 7, ...
Displacement in opposite directions within the range of the inner diameter of the left and right plastic deformable bodies or viscoelastic bodies 3, 3 is accompanied by plastic deformation. As a result, the horizontal shearing force Q is absorbed, and brittle fracture of the building due to large earthquake energy can be avoided.

In the figure, reference numerals 10 and 10 are liners installed for the purpose of securing a space necessary for interposing a plastically deformable body or a viscoelastic body 3, 3 between the splice plates 1 and 2, and 11, 11 Is a filler plate interposed so that the bonded body 5 and the splice plates 1, 1 do not come into close contact with each other.

3 to 5 show examples of use of the damper according to the present invention. FIG. 3 shows a case where it is used between columns 12 as structural members, and FIG. 4 shows structural members. Beams of the 13,1
3 shows a case where it is used between 3 and FIG. 5 shows a case where it is used for the wall 14 as a structural member.

(Effects of the Invention) Since the present invention is configured as described above, it has the following effects.

Although it has an extremely simple structure, it has a large seismic energy absorption capacity and extremely high performance as a damper. Further, since the structure is simple, it can be easily manufactured and mass-produced.

By appropriately changing the size and thickness of the plastically deformable body or the viscoelastic body, the rigidity and energy absorption amount of the damper can be freely adjusted.

[Brief description of drawings]

1 and 2 show a damper according to the present invention,
1 is a longitudinal sectional view thereof, FIG. 2 is a side view thereof, FIG.
FIG. 4 and FIG. 5 are partial side views of the pillar / beam frame showing the usage state of the damper. A …… Damper, 1,2 …… Splice plate, 3 ……
Plastic deformable body or viscoelastic body, 4,5 ... Structural member, 6 ... Mounting bolt, 7 ... Guide hole, 8 ... Guide bolt, 9 ...
… Fixing nuts, 10 …… liners, 11 …… filler plates, 12 …… pillars, 13 …… beams, 14 …… walls.

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Shozo Maeda 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Shinichi Takahashi 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd.

Claims (2)

[Claims] 1. One of the structural members installed opposite to each other has one end connected to the other structural member, and the other end connected to a plurality of guide bolts so as to slide in mutually opposite directions when the structural member is displaced. A damper, comprising: a plurality of spliced plates that are formed; and a plastic deformable body that is interposed between the splice plate and the splice plate and that plastically deforms as the structural member is displaced. 2. One of the structural members installed opposite to each other has one end connected to the other structural member, and the other end is connected via a plurality of guide bolts so as to slide in mutually opposite directions when the structural member is displaced. A damper comprising: a plurality of spliced plates that are formed; and a viscoelastic body that is interposed between the splice plate and the splice plate and plastically deforms as the structural member is displaced.