KR101117297B1 - Apparatus for seismic isolation having self-restoration ability - Google Patents

Abstract

The seismic isolator having the self-recovery capacity disclosed is an upper plate that is coupled to an upper structure, positioned below the upper plate, and below the middle plate, which is capable of shear deformation of the upper plate when lateral pressure is applied. An elastic disk, a lower plate located below the elastic disk, and a first elastic member providing restoring force against shear deformation of the upper plate and the intermediate plate. Thus, restoring force can be effectively provided against shear deformation.

Description

Seismic isolator with self-resilience ability {APPARATUS FOR SEISMIC ISOLATION HAVING SELF-RESTORATION ABILITY}

The present invention relates to an earthquake isolation device, and more particularly, to an earthquake isolation device having a self-resilience capacity.

In general, construction of construction structures requires a seismic design to prevent damage such as earthquakes and increase the life of the structure. In particular, in the case of bridges, concerns about earthquake damage are structurally high, and design and seismic reinforcement work are required to secure seismic stability. For bridges without seismic design, seismic force acting in the horizontal direction is concentrated on the bridge support, which may cause the bridge support to be destroyed, or the top plate may break off or collapse.

The disc support is a device that transmits the load acting on the superstructure of the bridge to the substructure, and is an important device related to the durability and stability of the bridge. The disc supports not only provide horizontal displacement and rotational freedom, but also have good upper load carrying capacity, allowing the disc supports to be used as friction dampers in seismic isolation of bridges.

However, in the case of using the disk support capable of providing the displacement in the horizontal direction, it is necessary to install a separate restoring force providing device in order to provide a restoring force for the horizontal displacement of the bridge, which is necessary for the inconvenience of construction and increase of cost. Cause.

Accordingly, an object of the present invention is to solve such a conventional problem, and to provide an earthquake isolation device having self-resilience capable of providing a restoring force against horizontal displacement.

Seismic isolating device having a self-resilience capacity according to an embodiment for achieving the above object of the present invention is the upper plate coupled to the upper structure, located below the upper plate and when the lateral pressure is applied, for the upper plate An intermediate plate capable of shear deformation, an elastic disk positioned below the intermediate plate, a lower plate positioned below the elastic disk, and a first elastic member providing restoring force against shear deformation of the upper plate and the intermediate plate.

According to an embodiment of the present invention, the first elastic member is fixed to the upper plate and the lower plate, and the first elastic member extends in a direction parallel to the shear deformation of the upper plate and the lower plate. It has a shape.

For example, a plurality of first elastic members may be disposed to surround the intermediate plate, and the first elastic members may expose side surfaces of the elastic disks to the outside. In addition, the first elastic member may have an arc shape with respect to a central axis passing through the elastic disk.

According to an embodiment of the present invention, the first elastic member includes an elastic resin and at least one reinforcing plate embedded in the elastic resin.

According to one embodiment of the invention, the intermediate plate and the elastic disk each have a through hole for receiving the first elastic member, the first elastic member is fixed to the upper plate and the lower plate.

For example, the shear key includes a body portion positioned in the through hole of the elastic disk and a protrusion portion located in the through hole of the lower plate and having a larger width than the body portion, and the body portion of the shear key includes a first fastening portion. It is screwed to the intermediate plate by, the protrusion is screwed to the body portion by a second fastening portion, the threads of the first fastening portion and the second fastening portion may be inclined in opposite directions to each other.

The body portion and the protrusion may be coupled to the fixing member to be separated from each other. In addition, the through hole of the protrusion and the lower plate may have a shape that increases in width toward the bottom.

For example, the first elastic member may be fixed to the upper plate and the lower plate, and the first elastic member may have an arc shape in which the width of the central portion is smaller than the width of the upper and lower portions.

For example, the seismic isolator may further include a second elastic member fixed to the upper plate and the intermediate plate, the second elastic member has a self restoring force in response to deformation within a predetermined range, the range It can be broken by the deformation exceeding the hysteresis behavior. The second elastic member may be fixed to a lower surface of the upper plate and a side surface of the intermediate plate, and a plurality of second elastic members may be disposed along the side surface of the intermediate plate.

The seismic isolator may support the lower plate and further include a lower plate support having a guide groove, and the lower plate may further include a protrusion corresponding to the guide groove.

The seismic isolator further includes a sus (SUS) plate and a first fluorine resin plate positioned between the intermediate plate and the upper plate to generate shear deformation in response to a lateral pressure, wherein the lower plate and the lower plate support unit It may further include a second fluorine resin plate disposed between, and having a friction coefficient smaller than the first fluorine resin plate.

In addition, the seismic isolator is a damping member including a fluid, a fluid cover, a pressing portion accommodated in the fluid cover and a connecting portion inserted into the fluid cover; And a damping member fixing part fixing the connecting part. The damping member is fixed to the lower plate, the damping member fixing part may be fixed to the lower plate support part. Alternatively, the damping member is fixed to the lower plate support part, and the damping member fixing part is fixed to the lower plate. It can be fixed to.

In addition, the seismic isolator may further include a guide bar connected to the upper end of the first elastic member. At this time, the upper plate may have a guide groove for receiving the guide bar, the guide groove is preferably longer than the length of the guide bar so that the guide bar is movable in a predetermined direction.

Seismic isolator having the self-resilience of the present invention described above can provide a restoring force effectively against shear deformation, in particular by employing a resilient member having a reinforcement cord or reinforcing plate in the shape of a net to increase the restoring force of the elastic body, Damage to the elastic body can be prevented to minimize irreversible deformation.

1 is a plan view of an earthquake isolation device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the seismic isolator of FIG. 1 taken along line II ′. FIG.
3 is a cross-sectional view of the seismic isolator of FIG. 1 taken along the line II-II '.
4 is a cross-sectional view illustrating the seismic isolator of FIG. 2 in which shear deformation occurs.
5 is a partial cross-sectional view showing a shear key of the seismic isolation device according to another embodiment of the present invention.
6 is a plan view of an earthquake isolation device according to another embodiment of the present invention.
7 is a plan view of an earthquake isolation device according to another embodiment of the present invention.
FIG. 8 is a cross-sectional view of the seismic isolator of FIG. 7 taken along line II ′. FIG.
9 is a perspective view showing a damping member of the seismic isolator according to another embodiment of the present invention.
FIG. 10 is a cross-sectional view of the damping member of FIG. 9 taken along line II ′. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. In the accompanying drawings, the dimensions of the structures are shown in an enlarged scale than actual for clarity of the invention.

Seismic isolator

1 is a plan view of a seismic isolator according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the seismic isolator of Figure 1 taken along line II ', Figure 3 is a seismic isolator of FIG. It is sectional drawing cut along the line II-II ', and FIG. 4 is sectional drawing which shows the seismic isolation device of FIG. 5 is a partial cross-sectional view showing a shear key of the seismic isolation device according to another embodiment of the present invention. 6 is a plan view of an earthquake isolation device according to another embodiment of the present invention.

1 to 4, an earthquake isolation device according to an embodiment of the present invention includes an upper plate 210, a suspan 214, a fluororesin plate 220, an intermediate plate 230, and an elastic disk 240. ), A lower plate 250, a shear key 280, a first elastic member 290, and a second elastic member 201.

The upper plate 210 is coupled to the upper structure by the upper plate coupling member 260. The upper plate coupling member 260 may include a set anchor 262 and a stud bolt 266. For example, when the top plate 210 has a square shape, the set anchor 262 may be coupled to four corners of the top plate 210. A plurality of stud bolts 266 may be coupled to the upper plate 210, for example, 4 to 8. The stud bolts 266 may be symmetrically disposed with respect to the center of the upper plate 210.

The sustain plate 214 and the fluorine resin plate 220 may be located between the upper plate 210 and the intermediate plate 220 to prevent friction between the upper plate 210 and the intermediate plate 220. And, when a lateral pressure is applied from the outside, as shown in Figure 4, the slip between the suspan 214 and the fluorine resin plate 220 occurs to shear deformation of the seismic isolation device. In detail, the suspan 214 may contact the upper plate 210, and the fluororesin plate 220 may be positioned below the suspan 214 to contact the intermediate plate 230. For example, the suspan plate 214 may be formed of stainless steel, and the fluororesin plate 220 may be formed of a fluorine resin such as polytetrafluoroethylene (PTFE). The suspan plate 214 and the fluorocarbon resin plate 220 may have a circular shape, for example.

The intermediate plate 230 is located between the fluororesin plate 220 and the elastic disk 240. The intermediate plate 230 may have, for example, a square or circular shape.

An upper guide groove may be formed on the upper surface of the intermediate plate 230 so as to guide the position of the fluororesin plate 220, and the lower surface of the intermediate plate 230 may position the elastic disk 240. The lower guide groove may be formed to guide. The upper guide groove may have a shape corresponding to the shape of the fluororesin plate 220, and the lower guide groove may have a shape corresponding to the shape of the elastic disk 240.

The elastic disk 240 is located between the intermediate plate 230 and the lower plate 250. The elastic disk 240 may include one or more reinforcing plates 142. The reinforcing plate 142 is embedded in the elastic disk 240 to reinforce the strength and elasticity of the elastic disk 240. As the reinforcement plate 142, a metal material such as steel may be used. Alternatively, the elastic disk 240 may not include a reinforcing plate. The elastic disk 240 may have a thickness of about 10 mm to about 200 mm, and may vary according to desired strength and elasticity.

The elastic disk 240 may have a circular shape, and the side surface of the elastic disk 240 is formed with a side groove 246 extending along the side of the elastic disk 240 in a direction parallel to the horizontal line. Can be. The side groove 246 may have a V shape. Alternatively, the side groove 246 may have an arc shape of 15 to 60 degrees.

The elastic disk 240 may be made of rubber, polyurethane, or the like. For example, the elastic disk 240 is filed by Unison Hi-Tech Co., Ltd. with Gangnam Hwaseong Co., Ltd., dated August 24, 2007, and registered under "No. 0817817 registered on March 24, 2008." And a polyurethane composition for producing an elastomer having a high strength and a method for manufacturing a polyurethane support member for a civil structural structure using the same '' may be manufactured using the polyurethane composition for producing an elastomer having a high durability and high strength.

Specifically, the polyurethane composition includes about 5 to about 50 parts by weight of the curing agent based on about 100 parts by weight of the prepolymer having an isocyanate group. The prepolymer may be obtained by reacting about 50 to about 70 parts by weight of a polyol, about 2 to about 15 parts by weight of a crosslinker or chain extender and about 20 to about 40 parts by weight of an isocyanate mixture. The isocyanate mixture includes a first isocyanate compound having a methyl group and a second isocyanate compound having a high rigidity. The curing agent includes 4,4-methylene-bis-2-chloroaniline.

One end of the first elastic member 290 is fixed to the lower plate 250 by a fixing member 293. A plurality of first elastic members 290 may be disposed to surround the intermediate plate 230. As shown in FIG. 4, when a pressure is applied to the seismic isolator so that shear deformation occurs between the upper plate 210 and the lower plate 250, the first elastic member 290 absorbs energy. And provide resilience.

The other end of the first elastic member 290 is connected to the guide bar 215 accommodated in the guide groove 217 of the upper plate 210. The length of the guide groove 217 is longer than the length of the guide bar 215 so that the guide bar 215 is movable in the longitudinal direction. For example, the length of the guide bar 215 may be substantially the same as the length of the first elastic member 290, and one end of the guide groove 217 is L1 longer than one end of the guide bar 215. Can be. Therefore, when shear deformation of the upper plate 210 and the lower plate 250 occurs, the guide bar 215 may move until it contacts the end of the guide groove 217, the movement When a shear deformation exceeding a range occurs, deformation of the first elastic member 290 occurs. Accordingly, the range of allowable shear deformation of the upper plate 210 and the lower plate 250 can be increased. For example, as shown in FIG. 4, when the shear deformation occurs in the second direction D2, the elastic member extending in the first direction D1 perpendicular to the second direction is deformed according to the shear deformation. The elastic member extending in the second direction may first deform in the excess range after the guide bar moves.

The first elastic member 290 has a shape extending in a direction parallel to the direction capable of shear deformation of the upper plate 210 and the lower plate 250. Accordingly, the first elastic member 290 may provide a large restoring force against shear deformation of the upper plate 210 and the lower plate 250. The first elastic member 290 is preferably maintained in a non-contracted state in the vertical direction so as not to be pressured by the upper plate 210. This is because when the first elastic member 290 is contracted by the pressure in the vertical direction, the restoring force against shear deformation may be lowered.

In one embodiment, the first elastic member 290 has an arc shape of which the width of the central portion is smaller than that of the upper and lower portions. This is advantageous for securing a moving distance during horizontal deformation and torsion, and has an effect of dispersing and reducing stress during the behavior of the elastic member. For example, the arc shape may be 0 to 400 R. Alternatively, the first elastic member 290 may have a side cross section of a rectangular shape having a width at the center portion substantially the same as the upper and lower portions.

The first elastic member 290 may include an elastic resin 291 and one or more reinforcing plates 292. The reinforcing plate 292 is embedded in the elastic resin 291 to reinforce the strength and elasticity of the first elastic member 290. As the reinforcement plate 292, a metal material such as steel or a reinforced plastics-based material may be used. Alternatively, the first elastic member 290 may not include a reinforcing plate. The elastic resin 291 may be made of rubber, polyurethane, or the like, and, for example, similar to the elastic disk described above, the polyurethane composition for producing an elastomer having a high durability and high strength disclosed in No. 0817817 It can be prepared using.

The first elastic member 290 may be fixed to the upper plate 210 and the lower plate 250 in various ways that can be easily applied to those skilled in the art.

The second elastic member 201 is fixed to the upper plate 210 and the intermediate plate 230, when the shear deformation occurs between the upper plate 210 and the intermediate plate 230, the second The elastic member 201 absorbs energy and provides restoring force. For example, the second elastic member 201 may be fixed to the upper plate 210 by the first fixing member 203 and may be fixed to the intermediate plate 230 by the second fixing member 205. . The second elastic member has a self restoring force corresponding to a deformation within a predetermined range, and is broken by a deformation exceeding the above range to perform a hysteretic behavior.

For example, a plurality of second elastic members 201 may be spaced apart from each other along the side shape of the intermediate plate 230. Alternatively, the second elastic member 201 may extend to surround the side surface of the intermediate plate 230. It may have a shape.

The second elastic member 201 may be made of rubber, polyurethane, or the like. For example, similar to the elastic disk described above, the polyurethane for manufacturing elastic bodies having high durability and high strength disclosed in the registration number 0817817 It can be prepared using the composition.

The lower plate 250 is connected to the lower structure by the lower plate coupling member 270. The lower plate coupling member 270 may include a set anchor 272 and a stud bolt 276. For example, when the lower plate coupling member 270 has a square shape, the set anchor 272 may be coupled to four corners of the lower plate 250, and the stud bolts 276 may be provided in plural. For example, 4 to 8 may be coupled to the lower plate 250. The stud bolts 276 may be symmetrical with respect to the center of the lower plate 250. The set anchor 272 penetrates the lower plate 250 and may be fixed to the lower plate 250 by a lower plate anchor bolt 274. Preferably, the height of the upper end of the lower plate anchor bolt 274 may be a nude bolt to be substantially the same as the height of the upper end of the lower plate 250, that is, do not protrude from the upper surface of the lower plate 250. . When the lower plate anchor bolt 274 protrudes from the upper surface of the lower plate 250, the lower plate anchor bolt 274 contacts the middle plate 230 to prevent rotation of the middle plate 230. There is a risk of interference.

In one embodiment of the present invention, the shear key 280 is located between the intermediate plate 230 and the lower plate 250, and passes through the through-hole formed in the elastic disk 240. The shear key 280 may be secured to the intermediate plate 230. For example, the shear key 280 has a first fastening portion 282 coupled to the intermediate plate 230. The first fastening part 282 may be coupled to the intermediate plate 230 by screwing. Preferably, the side surface of the shear key 280 and the through hole of the elastic disk 240 is spaced to form an empty space. This is to give an allowable rotation angle of the shear key 280 when the rotation of the elastic disk 240 occurs. For example, by the rotation or deformation of the elastic disk 240, the vertical axis of the shear key 280 may be inclined to about 0.02 R with respect to the upper surface of the lower plate 250.

The shear key 280 may include a body portion located in the through hole of the elastic disk 240 and a protrusion 284 located in the through hole 252 of the lower plate 250, and the protrusion 284. Is wider than the body. The protrusion 284 is not integrally formed with the body portion, and may be coupled to the body portion through a fixing member 286 or an extrusion screw shape of the body portion and the protrusion. This is because the wear and stress is concentrated on the protrusion 284 in the shear key 280, so that the damage is likely to occur, the repair and replacement of the protrusion 284 through the through hole 252 of the lower plate 250 is performed. It is for easy execution.

Referring to FIG. 5, the protrusion 284 of the shear key 280 according to an embodiment of the present invention may have a shape in which the width thereof becomes larger toward the bottom thereof, and similarly, the lower plate 250 also has the width thereof toward the bottom thereof. This enlargement may have a through hole 250. This can not only give an allowable rotation angle of the shear key 280 when the elastic disk 240 is rotated, but can also prevent side reaction force. In addition, as described above, the first fastening portion 282 is coupled to the intermediate plate 230 by screwing, the protrusion 284 is coupled to the body portion by screwing of the second fastening portion 284 Can be. At this time, it is preferable that the threads of the first fastening part 282 and the second fastening part 284 are inclined in opposite directions to each other. This is to prevent the shear key 280 from being detached together when detaching the protrusion 284.

Referring to FIG. 6, the first elastic member 290 of the seismic isolator is a set anchor 262 disposed at the edge of the upper plate 210 so that the side surfaces of the intermediate plate 230 and the elastic disk 240 are exposed. And a shear intermediate plate 230. In this case, since the elastic disk 240 is exposed to the outside can easily know whether the damage, the seismic isolator is easy to manage and repair. In addition, the first elastic member 290 extends to have an arc shape with respect to the central axis passing through the elastic disk 240. In this case, the restoring force for radian deformation can be increased. As in the above-described embodiment, the first elastic member 290 may have an arc shape in which the width of the center portion is smaller than the upper and lower portions in the cross-sectional view. This is advantageous for securing a moving distance during horizontal deformation and torsion, and has an effect of dispersing and reducing stress during the behavior of the elastic member.

7 is a plan view of the seismic isolator according to an embodiment of the present invention, Figure 8 is a cross-sectional view taken along the line II 'of the seismic isolator of FIG. 9 is a perspective view illustrating a damping member of an earthquake isolation device according to an embodiment of the present invention, and FIG. 10 is a cross-sectional view of the damping member of FIG. 9 taken along line II ′.

7 and 8, the seismic isolator according to another embodiment of the present invention includes an upper plate 210, a suspan 214, a first fluorocarbon resin plate 220, an intermediate plate 230, and an elastic disk. 240, lower plate 350, shear key, first elastic member 290, and second elastic member 201. The seismic isolator further includes a damping member 410, a damping member fixing part 420, a lower plate supporting part 510, and a second fluorine resin plate 360. Components having the same reference numerals are the same as or similar to the seismic isolator according to an embodiment of the present invention described above, a detailed description thereof will be omitted.

The lower plate 350 does not have a through hole corresponding to the shear key, and has a protrusion 355 protruding from the lower surface. The protrusion 355 may extend in one direction, for example, a throttle direction. The lower plate support 510 is disposed below the lower plate 350 to support the lower plate 350 and has a guide groove corresponding to the protrusion 355 of the lower plate 350.

The second fluorine resin plate 360 is disposed between the lower plate 350 and the lower plate support part 510, and a contact portion between the second fluorine resin plate 360 and the lower plate support part 510 is provided. 520 is disposed. The contact part 520 covers a guide groove corresponding to the guide protrusion 355. Therefore, shear displacement of the lower plate 350 and the lower plate support part 510 may occur along the direction in which the protrusion 355 and the guide groove extend.

In order to facilitate the operation and restoration of the seismic isolator, the first fluorine resin plate 220 preferably has a higher coefficient of friction than the second fluorine resin plate 360.

A damping member 410 is disposed on the side of the lower plate 350, and the damping member 410 is fixed to the damping member fixing part 420. The damping member fixing part 420 may be fixed to the lower plate 350 or the lower plate support part 510.

9 and 10, the damping member 410 has a first connecting portion 415 and a second connecting portion 417 respectively connected to the damping member fixing part 420, and the first connecting portion 415 and The second connection portion 417 is connected to the pressing portion 416. The pressurization portion 416 is surrounded by a fluid 414, and the fluid 414 is surrounded by a fluid cover 412. That is, the first connector 415 and the second connector 416 are inserted into the fluid cover 412.

The fluid cover 412 may have a cylindrical shape and may be fixed to the lower plate 350 or the lower plate support 510. Specifically, when the damping member fixing part 420 is fixed to the lower plate 350, the fluid cover 412 is fixed to the lower plate supporting part 510, and the damping member fixing part 420 is When the lower plate support 510 is fixed, the fluid cover 412 is fixed to the lower plate 350. The fluid 412 may be used those used in the existing hydraulic piston.

Therefore, when the shear displacement of the lower plate 350 and the lower plate support part 510 occurs along the direction in which the protrusion 355 and the guide groove extend, the connection part of the damping member 410 and the fluid. Between the covers 412, shear displacements occur along the axial direction of the connection. At this time, by the friction and reaction between the pressing portion 416 and the fluid 412, the displacement and the applied pressure may be attenuated. Therefore, it is possible to prevent damage of the seismic isolator due to the sudden displacement of the lower plate 350 and the lower plate support 510.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

The present invention relates to an earthquake isolation device, and has industrial applicability in fields such as civil engineering and construction.

Claims (18)

An upper plate coupled with the superstructure;
An intermediate plate positioned below the upper plate and capable of shear deformation of the upper plate when a lateral pressure is applied;
A sus (SUS) plate and a first fluorocarbon resin plate positioned between the intermediate plate and the upper plate to generate a slip which causes the shear deformation;
An elastic disk positioned below the intermediate plate and having a through hole;
A bottom plate positioned below said elastic disk;
A shear key located between the intermediate plate and the lower plate and penetrating the through hole of the elastic disk;
A first elastic member fixed to the upper plate and the lower plate to provide a restoring force against shear deformation of the upper plate and the intermediate plate; And
A second elastic member fixed to the upper plate and the intermediate plate, the second elastic member comprising rubber or polyurethane, having a self restoring force corresponding to a deformation within a predetermined range, and a deformation exceeding the range. History behavior by
The shear key includes a body portion located in the through hole of the elastic disk and a protrusion portion located in the through hole of the lower plate and having a width greater than that of the body portion, wherein the body portion of the shear key is formed by the first fastening portion. It is screwed to the intermediate plate, the protrusion is screwed to the body by a second fastening portion, the thread of the first fastening portion and the second fastening portion is self-resilient, characterized in that inclined in opposite directions to each other Having seismic isolator. The seismic isolating device according to claim 1, wherein the first elastic member has a shape extending in a direction parallel to the shear deformation of the upper plate and the lower plate. The seismic isolating device according to claim 2, wherein a plurality of the first elastic members are disposed to surround the intermediate plate. The seismic isolator of claim 3, wherein the first elastic member exposes a side surface of the elastic disk to the outside. The seismic isolating device according to claim 2, wherein the first elastic member has an arc shape with respect to a central axis passing through the elastic disk. The seismic isolating device according to claim 2, wherein the first elastic member includes an elastic resin and at least one reinforcing plate embedded in the elastic resin. delete The seismic isolator of claim 1, wherein the body part and the protrusion part are coupled to each other by a fixing member and are separated from each other. The seismic isolator of claim 1, wherein the through hole of the protrusion and the lower plate has a shape in which the width of the protrusion and the lower plate increases toward the lower side. The self-healing of claim 1, wherein the first elastic member is fixed to the upper plate and the lower plate, and the first elastic member has an arc shape in which a width of a central portion is smaller than a width of an upper portion and a lower portion. Seismic isolator with capability. The seismic isolator of claim 1, wherein the second elastic member is broken by deformation exceeding the range. 12. The seismic isolating device according to claim 11, wherein the second elastic member is fixed to the lower surface of the upper plate and the side of the middle plate, and a plurality of the second elastic members are disposed along the side of the middle plate. . The earthquake having self-resilience according to claim 1, further comprising a lower plate support portion supporting the lower plate and having a guide groove, wherein the lower plate further includes a protrusion corresponding to the guide groove. Isolation device. 15. The earthquake with self-resilience of claim 13, further comprising a second fluorine resin plate disposed between the lower plate and the lower plate support and having a friction coefficient smaller than that of the first fluorine resin plate. Isolation device. The method of claim 13,
A damping member including a fluid, a fluid cover, a press part accommodated in the fluid cover, and a connection part inserted into the fluid cover; And
Seismic isolating device having a self-resilience, characterized in that it further comprises a damping member fixing portion for fixing the connection. The seismic isolator of claim 15, wherein the damping member is fixed to the lower plate, and the damping member fixing part is fixed to the lower plate support part. 16. The seismic isolating device according to claim 15, wherein the damping member is fixed to the lower plate supporting part, and the damping member fixing part is fixed to the lower plate. The method of claim 1, further comprising a guide bar connected to the upper end of the first elastic member, the upper plate has a guide groove for receiving the guide bar, the guide groove so that the guide bar is movable in a predetermined direction, Earthquake isolation device having a self-recovery capacity, characterized in that longer than the length of the guide bar.

Images