KR101631040B1

KR101631040B1 - Displacement amplification damper

Info

Publication number: KR101631040B1
Application number: KR1020150171742A
Authority: KR
Inventors: 김영주; 정인용; 이주호; 장성훈; 전현수; 심학보; 박종욱; 박기홍; 박영미
Original assignee: 주식회사 디알비동일; 롯데건설 주식회사; 두산건설 주식회사
Priority date: 2015-12-03
Filing date: 2015-12-03
Publication date: 2016-06-15

Abstract

The present invention provides a displacement amplification type damper which is capable of dissipating earthquake energy even at a small displacement by applying a displacement amplifier and can be constructed simply and is inexpensive to manufacture.
According to a preferred embodiment of the present invention, A damper provided at at least one portion of the lower plate; A plate-shaped upper plate disposed on the same plane with a predetermined space above the lower plate; One end of which is located on the upper end of the lower plate and the other end is connected to the lower plate by a lower hinge and the other end is connected to the upper plate by a lower hinge, And the damper is constituted by a plurality of slits arranged at regular intervals in the thickness direction of the lower hinge side region of the lower plate with a predetermined width.

Description

Displacement amplification damper < RTI ID = 0.0 >

The present invention relates to a damper to be used for dissipating lateral energy, and more particularly, to a displacement amplification type damper which can dissipate earthquake energy even at a small displacement by applying a displacement amplifier,

Generally, vibration control refers to absorption of vibrational energy acting on a building by using an artificial device, and such a device or structure for vibration damping is referred to as a vibration damping structure. At this time, the vibration energy in the design of the earthquake controlled by the above-mentioned damping structure is mainly an external force due to an earthquake or a wind load of a high-rise building. The concept of earthquake resistance as compared with the above-mentioned vibration suppression means that the structure is designed to have sufficient strength to resist horizontal force. Meanwhile, the vibration damping method described above can be classified into a passive type damping structure that does not require external power and an active type damping structure that uses external power, and a passive type damping structure is widely used in a building. In addition, the passive type vibration damping structure can be classified into mass vibration type and energy dissipation type, and the energy dissipating type vibration damping structure uses energy dissipation due to frictional force of the material or plastic deformation of the metal. Dissipated by heat or firing energy

Generally, the damper performs damping by causing plastic deformation, viscoelastic deformation or friction deformation to dissipate energy. At this time, the damper causing the deformation absorbs the amount of lateral strain generated at the time of demolishing, thereby performing the demolition. In this case, the minimum amount of demolition is required. At a displacement below the minimum required amount, the energy dissipation is impossible and the efficiency of the damper drops. In a building with a high stiffness and a low lateral displacement (such as a concrete shear wall type apartment), the effectiveness of the damper is insufficient and additional seismic reinforcement is required.

As a background of the present invention, Korean Patent Registration No. 10-1134911 discloses a rotary damper device for reciprocating displacement-amplifying type for reducing earthquake energy. A first fixing part having a first central groove formed at a center thereof and having a plurality of first fixing grooves formed outside the first center groove, a connecting part connected to the first fixing part, A rotation connecting plate formed to be opposite to the first fixing part and formed of a second fixing part formed with a second center groove and a second fixing groove corresponding to the first center groove and the first fixing groove, A reciprocating friction pad which is positioned above and below the first plate of the reciprocating plate and in which a friction groove corresponding to the slot is formed; And is fixed to the first plate and has a plurality of bolt grooves formed on one side. When external vibrations such as earthquakes are transmitted to a structure or the like, the vibrations are divided into rotational connection plates formed in various shapes, Oscillation So that damage to the structure can be prevented.

However, the above background art has a disadvantage in that the structure is complicated, a large number of component parts are included, manufacturing costs are increased, the capacity of the damper is increased, and the installation area is increased.

Korean Patent Registration No. 10-1134911

An object of the present invention is to provide a displacement amplification type damper which can dissipate earthquake energy even at a small displacement by applying a displacement amplifier, can be easily configured, and is low in manufacturing cost.

According to a preferred embodiment of the present invention, A damper provided at at least one portion of the lower plate; A plate-shaped upper plate disposed on the same plane with a predetermined space above the lower plate; One end of which is located on the upper end of the lower plate and the other end is connected to the lower plate by a lower hinge and the other end is connected to the upper plate by a lower hinge, And the damper is constituted by a plurality of slits arranged at regular intervals in the thickness direction of the lower hinge side region of the lower plate with a predetermined width.

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Also, the displacement amplifier is a plate-like type in which the center of rotation has a wide width and a width becomes relatively narrower toward a shorter radius and a longer radius, and is symmetrically disposed with the lower plate and the upper plate at the center. In this case, the displacement amplifier may further include a reinforcing rib projecting at a predetermined height along the circumference.

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The displacement amplifier may further include a reinforcing rib projecting at a predetermined height along a circumference of the rectangular plate-shaped body having a predetermined width and length.

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According to the displacement-amplifying damper of the present invention, by applying the displacement amplifier applying the principle of the leverage, the damper is operated at a rate amplified even at a small displacement, so that seismic energy dissipation is possible. In addition, it can be easily constructed, is low in manufacturing cost, can be configured in a slim shape, and has an advantage of occupying a small installation space.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a perspective view of an embodiment of a displacement-amplifying damper according to the present invention;
Fig. 2 is an exploded perspective view of Fig. 1; Fig.
Figure 3 is a front view of Figure 1;
4 is a perspective view of another embodiment of a displacement-amplifying damper according to the present invention.
Fig. 5 is a front view of Fig. 4; Fig.
6 is a sectional view taken along the line AA in Fig. 5;
7 is a perspective view of still another embodiment of a displacement-amplifying damper according to the present invention.
8 is a front view of Fig.
9 is an exploded perspective view of Fig.
10 is a graph showing a hysteresis curve of a damper having a double amplification ratio and a conventional damper according to the present invention.
11 is a perspective view of a displacement amplifying type damper in which a displacement amplifier applied to the present invention is modified.
FIG. 12 is a perspective view of a displacement amplifying type damper, which is a modification of the displacement amplifier applied to the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

1 to 3, the displacement-amplifying damper 10 includes a plate-shaped lower plate 12 having reinforcing ribs 121 at both ends thereof, a damper (not shown) provided at at least one position of the lower plate 12 An upper plate 16 which is disposed on the same plane with a predetermined gap G above the lower plate 12 and has reinforcing ribs 161 at both ends thereof, And a pair of displacement amplifiers 18 and 18 for amplifying the displacement of the damper 14 and transmitting the amplified displacement to the damper 14.

The lower plate 12 and the upper plate 16 have the same cross-section, but are not limited to this cross-sectional shape. The damper 14 may be applied in the form of plastic deformation, viscoelastic deformation, or friction deformation.

The displacement amplifier 18 has the rotation center O of the upper pivot hole 122 of the lower plate 12 at the upper end of the lower plate 12 and one end of the displacement amplifier 18 has the lower radius R 1 at the upper plate 16, And the other end is connected to the lower plate 12 with a longer radius R2 and a lower hinge h2. Preferably, the displacement amplifiers 18 and 18 have a plate-like shape in which the center of rotation O has a wide width and a width is relatively narrowed toward the short radius R1 and the long radius R2, and the lower plate 12 and the upper plate 16 ) Are disposed symmetrically with respect to the center. Here, the upper hinge h1 and the lower hinge h2 are formed of bolts, but they may be formed as hinge pins.

As shown in FIG. 2, the damper 14 is a structure that dissipates earthquake energy by plastic deformation. The damper 14 has a constant width in a predetermined region on the lower hinge h2 side of the lower plate 12, And a plurality of slits 15 arranged in a row.

3, when the lateral load P is applied due to a wind load or an earthquake, the displacement of the upper plate 16 is amplified by the displacement amplifier 18 a number of times, And acts on the damper 14 having the plastic deformed shape of the plate 12.

Accordingly, the region of the slit 15 formed in the damper 14 is plastically deformed to dissipate the earthquake energy and perform vibration damping. In this way, by applying the displacement amplifier 18 to which the principle of the lever is applied, the minute displacement can be amplified to effectively perform vibration suppression. In addition, the damper 14 is damped by the amount of displacement amplified by the displacement amplifier 18 to increase the dissipation of the lateral load energy.

Also, the damper 14 can be formed in a slim shape without changing the thickness of the lower plate 12, thereby reducing manufacturing costs.

Meanwhile, the damper 14 may be modified into a different shape to form a highly attenuated vibration damper as shown in FIGS. As shown in FIGS. 4 to 6, the high-attenuating vibration damper has a damper opening 14a opened in a thickness direction at a portion of the lower plate 12 where the lower hinge h2 is located, A hinge movable plate 141 which is connected to the lower hinge h2 of the damper opening 14a and is positioned at the damper opening portion 14a and a pair of hinge movable plates 141 which are opposed to the hinge movable plate 141 and fixed to the damper opening portion 14a Damping rubbers 143 and 143 positioned between the pair of pressure plates 142 and the hinge movable plate 141 and the pair of pressure plates 142 and 142 are fastened to each other by high damping And a pressure plate tightening bolt 144 which closely contacts the rubber 143 between the pair of pressure plates 142 and the hinge movable plate 141.

When the high damping damper 14 is applied in this way, the displacement amplifier 18 causes the displacement of the top plate 16 to act on the high damping rubber 143 on the high damping damper 14 side. As a result, the high-damping rubber 143 absorbs earthquake energy by viscoelastic deformation and performs vibration damping.

Further, the damper 14 may be deformed into another shape, so that the damper 14 may be configured as a friction-type vibration damper as shown in FIGS. 7 to 9, the frictional damper 14 includes a damper opening 14a which is opened in a thickness direction at a portion of the lower plate 12 where the lower hinge h2 is located, A hinge movable plate 141 connected to the lower hinge h2 of the damper opening 14a and positioned in the damper opening 14a and a hinge movable plate 141 fixed to the hinge movable plate 141 and fixed to the damper opening 14a Friction pads 145 and 145 positioned between the pair of pressure plates 142 and the hinge movable plate 141 and the pair of pressure plates 142 and 142 are fastened to each other by friction between the pair of pressure plates 142 and 142, And a friction pad tightening bolt 144 that closely contacts the pads 145 and 145 between the pair of pressure plates 142 and the hinge movable plate 141.

At this time, the friction pad tightening bolt 144 is inserted through the elongated hole 141a of the hinge movable plate 141.

When the frictional damper 14 is applied in this manner, the displacement amplifier 18 causes the displacement of the upper plate 16 to act on the friction pad 145 on the frictional damper 14 side. Accordingly, the frictional damper 14 causes a friction movement to absorb the earthquake energy, thereby performing vibration damping.

As described above, the displacement-amplifying damper 10 of the present invention applies the displacement amplifier 18 to operate the damper at a rate that is amplified even at a small displacement as shown in FIG. 10, so that seismic energy can be dissipated. In addition, it can be easily constructed, is low in manufacturing cost, can be configured in a slim shape, and has an advantage of occupying a small installation space.

11, the displacement amplifiers 18 and 18 are formed in a plate-like shape in which the portion of the center of rotation O has a wide width and the width becomes relatively narrower toward the short radius R1 and the long radius R2, A reinforcing rib 181 protruding at a predetermined height may be further provided.

12 and the displacement amplifiers 18 and 18 are formed in a rectangular plate-like shape having a constant width and length, it is possible to further comprise a reinforcing rib 181 protruding at a predetermined height along the perimeter thereof.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

12: Lower plate
14: Damper
141: Hinge movable plate
141a: Long hole
142: Platen
143: Highly damped rubber
144: Platen tightening bolt
145: Friction pad
16: upper plate
18: Displacement amplifier
181: reinforcing rib

Claims

A plate-shaped lower plate 12;
A damper (14) provided at at least one portion of the lower plate (12);
A plate-shaped upper plate 16 disposed on the same plane at a predetermined interval above the lower plate 12;
One end of which is connected to the upper plate 16 by a top hinge h1 with a minor radius R1 and the other end is connected to the bottom plate 12 by a large radius R2 on the bottom plate 12, And a pair of displacement amplifiers (18, 18) connected by a hinge (h2) for amplifying the displacement of the upper plate and transmitting the amplified displacement to the damper (14)
The damper 14 is formed of a plurality of slits 15 having a predetermined width in the region of the lower hinge h2 side of the lower plate 12, A displacement amplifying type damper.

The method according to claim 1,
The displacement amplifiers (18, 18)
The rotation center O is a plate-like shape having a wide width and relatively narrower in width toward the short radius R1 and the longer radius R2 and is symmetrically disposed with the lower plate 12 and the upper plate 16 at the center And the damper is a displacement amplifying type damper.

3. The method of claim 2,
Wherein the displacement amplifiers (18, 18) are further provided with a reinforcing rib (181) protruding at a predetermined height along the perimeter thereof.

The method according to claim 1,
Wherein the displacement amplifiers (18, 18) are further provided with a reinforcing rib (181) having a predetermined width and length and protruding at a predetermined height along a circumference thereof.

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