KR101051059B1 - Disk bearing for seismic isolation - Google Patents

Abstract

PURPOSE: A disk bearing for seismic isolation is provided to prevent concrete from flowing into an elastic disk by forming a second middle plate between a first middle plate and a lower plate. CONSTITUTION: A disk bearing for seismic isolation comprises an upper plate(110), a first middle plate(120), a second middle plate, an elastic disk(140), a first shearing member(180), a lower plate(160), and a second shearing member(162). The first is located under the upper plate and is sheared when horizontal pressure is applied. The second middle plate is located under the first middle plate. The elastic disk is arranged between the first and second middle plates. The first shearing member transfers a horizontal load to the first and second middle plates and the elastic disk. The lower plate is located under the second middle plate. The second shearing member is formed in a disk shape to transfer a horizontal load to the second middle plate and the lower middle plate. plate].

Description

Isolation Disk Support {DISK BEARING FOR SEISMIC ISOLATION}

The present invention relates to a base plate for base isolation, and more particularly, to a base plate for base isolation that can facilitate maintenance.

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 break down or break off or collapse the top plate when an earthquake occurs.

The base plate for base isolation is a device that transmits the load acting on the upper structure of the bridge to the lower structure, and is an important device related to the durability and stability of the bridge. The base plate for base isolation can provide displacement and rotational degree of freedom according to design, and it has excellent upper load bearing capacity, so it can be used as a friction damper in seismic isolation of bridges.

Since the load and stress applied to the seismic isol base is concentrated on the bridge, proper maintenance such as replacement of parts is required. However, the conventional base isolation disk support consists of an upper plate, an intermediate plate, a disk, a lower plate, and a shear member penetrating the disk, and for replacing parts, the intermediate plate must be raised above the height of the shear member. In addition, the bottom plate and the bed concrete should be removed to reinforce the seismic disk support. therefore. There is a disadvantage that the maintenance and repair of the base support disk is not easy.

Accordingly, an object of the present invention is to solve such a conventional problem, and to provide a base support disk for seismic isolation that can be easily maintained and repaired.

In accordance with an embodiment for achieving the above object of the present invention, the base plate for base isolation is a top plate, a first intermediate plate which is located below the top plate and is capable of shear deformation of the top plate when lateral pressure is applied, A second intermediate plate positioned below the first intermediate plate, an elastic disk disposed between the first intermediate plate and the second intermediate plate, disposed through the elastic disk, the first intermediate plate and the second intermediate plate A first shear member for transmitting a horizontal load to the plate and the elastic disk, a lower plate positioned below the second intermediate plate, and disposed between the second intermediate plate and the lower plate, such that the horizontal load is applied to the second intermediate plate and the lower plate. It includes a second shear member for transmitting.

According to one embodiment, the first shear member may be coupled to the first intermediate plate, specifically, the body portion located in the through hole of the elastic disk and the through hole of the second intermediate plate and the It includes a protrusion having a larger width than the body portion, the body portion and the protrusion may be formed integrally.

According to one embodiment, the first shear member may be coupled to the first intermediate plate, specifically, the body portion located in the through hole of the elastic disk and the through hole of the second intermediate plate and the A protrusion having a width greater than that of the body, wherein the body portion of the first shear member is screwed to the first intermediate plate by a first fastening portion, and the protrusion is screwed to the body portion by a second fastening portion. The threads of the first fastening part and the second fastening part may be inclined in opposite directions.

According to one embodiment, the vertical thickness of the second shear member may be smaller than the first shear member, specifically, the first shear member has a pin shape, the second shear member has a disk shape Can be.

According to one embodiment, the upper plate includes a side support member extending downward, the base disk support is disposed between the side support member and the first intermediate plate, the upper plate and the first intermediate plate It may further comprise a restoring member for restoring the shear deformation of the plate.

According to an embodiment, the restoring member may include a head in contact with the side support member, an elastic body disposed between the head and the first intermediate plate to provide a restoring force, and a guide bar connected to the head through the elastic body. It may include an auxiliary elastic body to compensate for the irreversible deformation of the elastic body. For example, the elastic body may have a circular or rectangular cross section, and a plurality of guide bars may be connected to the head.

According to an embodiment, the side support member and the first intermediate plate may have an octagonal shape on a plane, and eight restoration members may be disposed.

According to one embodiment, the base isolation disk support may further include an upper slip portion disposed on the upper plate and capable of shear deformation with the upper plate and a locking device for limiting the rapid movement of the upper slip portion. Specifically, the upper slip portion protrudes from a lower surface and includes a sliding guide extending in one direction, and the guide groove corresponding to the shape of the slip guide may be formed on the upper surface of the upper plate to accommodate the slip guide. have.

According to one embodiment, the locking device, a pair of locking device fixing portion fixed to the upper plate, a fluid cover disposed between the locking device fixing portion, through the fluid cover, the locking device fixing portion It may include a connecting portion to be connected, a fluid accommodated in the fluid cover and a pressurization portion accommodated in the fluid cover and connected to the connection portion.

According to one embodiment, the pressing portion is spaced apart from the fluid cover at a predetermined interval, to form an orifice through which the fluid can move, the fluid cover has a guide protrusion protruding upward, the upper slip portion It may have a guide groove for receiving the guide protrusion.

The above-described isolating disk support of the present invention further includes a second intermediate plate disposed between the first intermediate plate and the lower plate, thereby preventing the concrete from entering the elastic disk when the lower plate and the lower structure are coupled. In addition, by connecting the second intermediate plate and the lower plate using a second shear member having a small thickness, the second intermediate plate can be easily lifted during repair or replacement of the base plate for maintenance of the base isolation disk. It is advantageous to In addition, it is possible to install the same or more seismic disk support of the same type or above without removing the lower plate, and reduce the maintenance cost because it does not need to break the bed concrete.

1 is a cutaway perspective view showing a disk support for base isolation according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a disk support for base isolation according to an embodiment of the present invention.
Figure 3 is an enlarged cross-sectional view showing a shear member of the base plate for base isolation according to an embodiment of the present invention.
Figure 4 is an enlarged cross-sectional view showing a shear member of the base plate for the base isolation according to another embodiment of the present invention.
5 is an enlarged cross-sectional view illustrating a shear member of a base isolation disk support according to another embodiment of the present invention.
Figure 6 is a cutaway perspective view showing a disk support for base isolation according to an embodiment of the present invention.
Figure 7 is an exploded perspective view showing a disk support for base isolation according to an embodiment of the present invention.
Figure 8 is a cutaway perspective view showing a disk support for base isolation according to an embodiment of the present invention.
Figure 9 is an exploded perspective view showing a disk support for base isolation according to an embodiment of the present invention.
10 is an enlarged cross-sectional view showing a locking device for a base isolation disk support according to an embodiment of the present invention.
11 is a cutaway perspective view showing a base support disk for seismic isolation according to an embodiment of the present invention.
12 is an exploded perspective view showing a disk support for base isolation according to an embodiment of the present invention.

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 cutaway perspective view showing a base support disk for isolation according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a base support disk for isolation according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention It is an expanded sectional view which shows the front-end member of the base stand for base isolation according to an example. Figure 4 is an enlarged cross-sectional view showing a shear member of the base plate for the base isolation according to another embodiment of the present invention. 5 is an enlarged cross-sectional view illustrating a shear member of a base isolation disk support according to another embodiment of the present invention.

1 to 3, the base support disk for isolation according to an embodiment of the present invention is the upper plate 110, the first intermediate plate 120, the elastic disk 140, the second intermediate plate 150 and And a lower plate 160.

An upper structure is placed on the upper plate 110, and the upper plate 110 may be fixed to the upper structure by using a coupling member such as a set anchor and a stud bolt. A shear deformation part is disposed between the upper plate 110 and the first intermediate plate 120. The shear deformation part includes a sus (SUS) plate 132 and a fluororesin plate 134.

The sustain plate 132 and the fluororesin plate 134 are fixed to the upper plate 110 and the first intermediate plate 120, respectively. For example, the sustain plate 132 may be coupled to a lower surface of the upper plate 110, and the fluororesin plate 134 may be seated and fixed in a groove formed in an upper portion of the first intermediate plate 120. Can be. The sustain plate 132 may be formed of stainless steel, and the fluororesin plate 134 may be formed of a fluorine resin such as polytetrafluoroethylene (PTFE). The sustain plate 132 and the fluororesin plate 134 may have a planar shape such as a circle or a polygon.

The shear deformation part prevents friction between the upper plate 110 and the first intermediate plate 120, and when a lateral pressure is applied from the outside, between the upper plate 110 and the first intermediate plate 120. Sliding occurs and shear deformation of the seismic disk support occurs.

The upper plate 110 is coupled to the side support member 112 extending downward, and the restoring member 170 is disposed between the side support member 112 and the first intermediate plate 120.

A plurality of restoration members 170 may be disposed corresponding to four sides of the first intermediate plate 120. Depending on the use and function of the base disk support for the base isolation, the restoring member may be disposed on only two sides instead of four sides. For example, the pair of restoration members may be disposed in correspondence with two parallel sides of the first intermediate plate 120. The restoration member 170 includes a head 174, a guide bar 179, and an elastic body 172. When the shear deformation of the shear deformation occurs, that is, when the upper plate 110 is moved horizontally with respect to the first intermediate plate 120, the restoring force is applied to the restoring member 170, the restoring correspondingly When the member 170 contracts and the pressure applied is reduced, it is possible to restore the shear deformation of the base support disk by the elastic restoring force.

The head 174 is in contact with the side support member 112. According to the shear deformation of the base isolation disk support, shear deformation may occur between the side support member 112 and the restoration member 170. In order to facilitate such shear deformation (sliding), the side support member 112 includes a sliding plate 114 made of stainless steel, etc., the head 174 is caused by friction with the sliding plate 114 In order to prevent damage, the head 174 may be coated with a fluorine resin such as polytetrafluoroethylene (PTFE), or may include a sliding member 178 made of fluorine resin.

The guide bar 179 is fixed to the head 174 to pass through the through hole of the elastic body 172. A portion of the guide bar 178 is inserted into the guide groove 122 of the first intermediate plate 120, and when the elastic body 172 contracts, the first intermediate plate 120 along the side guide groove 122. Move inside of).

Preferably, the elastic body 172 may have a circular or rectangular shape, and may be made of a high elastic material such as polyurethane, and one head 174 may be connected to a single or a plurality of guide bars 179.

In addition, the restoration member 170 may further include an auxiliary elastic body 176. The elastic body 174 contracted by the pressure is mostly restored by the restoring force, but is not actually completely restored by the irreversible deformation. The auxiliary elastic body 176 is connected to the guide bar 179 and inserted into the guide groove 122. The auxiliary elastic body 176 may be a spring of a metal material.

The elastic disk 140 is disposed between the first intermediate plate 120 and the second intermediate plate 150. Grooves corresponding to the shape of the elastic disk 140 are formed on the lower surface of the first intermediate plate 120 and the upper surface of the second intermediate plate 150 so as to guide the position of the elastic disk 140. Can be.

The elastic disk 140 may have a polygonal shape such as a circle or a square, and the side groove of the elastic disk 140 extends along the side of the elastic disk 140 in a direction parallel to the horizontal line. Can be formed. The side groove may have a V shape. Alternatively, the lateral grooves may have an arc shape of 15 to 60 degrees.

The elastic disk 140 may be made of rubber, polyurethane, or the like. For example, the elastic disk 140 was filed on August 24, 2007 by Unison E & C Co., Ltd. and Gangnam Hwasung Co., Ltd., 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.

The elastic disk 140 may include one or more reinforcing plates. The reinforcing plate is embedded in the elastic disk 140 to reinforce the strength and elasticity of the elastic disk 140. As the reinforcing plate, a metal material such as steel may be used. Alternatively, the elastic disk 140 may not include a reinforcing plate. The elastic disk 140 may have a thickness of about 10 mm to about 200 mm, and may vary according to desired strength and elasticity.

A first shear member 180 penetrating the elastic disk 140 is disposed between the first intermediate plate 120 and the second intermediate plate 150. The first shear member 180 may have a pin shape extending in the vertical direction. The first shear member 180 transmits a horizontal load to the first intermediate plate 120, the elastic disk 140, and the second intermediate plate 150.

The first shear member 180 may be fixed to the first intermediate plate 120. For example, the first shear member 180 has a first fastening portion 182 coupled to the first intermediate plate 120. The first fastening part 182 may be coupled to the first intermediate plate 120 by screwing. Preferably, side surfaces of the first shear member 180 and the through hole of the elastic disk 140 are spaced apart to form an empty space. This is to give an allowable rotation angle of the first shear member 180 when the rotation of the elastic disk 140 occurs. For example, by the rotation or deformation of the elastic disk 140, the vertical axis of the first shear member 180 may be inclined to about 0.02 R with respect to the upper surface of the second intermediate plate 150.

The first shear member 180 may include a body portion 184 located in the through hole of the elastic disk 140 and a protrusion 186 located in the through hole of the second intermediate plate 150. The protrusion 186 is wider than the body portion. The protrusion 186 may be integrally formed with the body portion, and may be coupled to the body portion through a fixing member or an extrusion screw shape of the body portion and the protrusion. Combination of the protrusion and the body part in consideration of the high possibility of damage because the wear and stress is concentrated on the protrusion 186 in the first shear member 180, the protrusion 186 through the through hole of the second intermediate plate 150 This is to facilitate the maintenance of).

Referring to FIG. 4, the protrusion of the first shear member 80 according to the exemplary embodiment of the present invention may have a shape in which the width of the first shear member 80 increases downward, and similarly, the second intermediate plate 150 also goes downward. It may have a through hole that becomes wider. This may not only impart an allowable rotation angle of the first shear member 80 when the rotation of the elastic disk 140 occurs, and may prevent side reaction force. In addition, as described above, the first fastening portion may be coupled to the first intermediate plate by screwing, the protrusion may be integrally formed with the body portion, and may be coupled to the body portion by screwing of the second fastening portion. .

A second shear member 162 is disposed between the second intermediate plate 150 and the lower plate 160. In order to guide the position of the second shear member 162, grooves corresponding to the shape of the second shear member 162 are formed on the bottom surface of the second intermediate plate 150 and the top surface of the lower plate 160, respectively. This may be formed and the installation position and the quantity of the second shear member 162 may be variously adjusted. Accordingly, the second shear member 162 may transmit a horizontal load to the second intermediate plate 150 and the lower plate 160.

Preferably, the second shear member 162 may be made of a metal material having high rigidity. In addition, it may have a disk shape and has a thickness smaller than that of the first shear member 180 in the vertical direction.

Referring to FIG. 5, a plurality of second shear members 163 may be disposed. As shown in FIG. 4, when the second shear member 162 is one, it is preferable to be disposed at the same planar position as the first shear member 182, that is, at the center of the elastic disk 140. When two second shear members 163 are disposed, they may be disposed around the first shear member 182.

The first intermediate plate 120 may have a circular or polygonal shape, and may have a polygonal shape with corners cut in consideration of ease of work and design.

The lower plate 160 is connected to the lower structure by the lower plate coupling member 164. The lower plate coupling member 164 may include a set anchor, a stud bolt, and the like, and each coupling member 164 may be used interchangeably.

According to the isolating disk support, further comprising a second intermediate plate disposed between the first intermediate plate and the lower plate, so that the concrete through the first shear member 180 when the lower plate and the lower structure is coupled In addition to preventing penetration into the elastic disk through the through groove of the plate 160, by connecting the second intermediate plate and the lower plate by using a small thickness of the second shear member, repairing the disk support for the base isolation, The second intermediate plate can be easily lifted at the time of parts replacement, which is advantageous for maintenance. In addition, it is possible to install a disk support for the same or more seismic or higher without removing the lower plate 160, and can reduce the maintenance cost because it does not have to break the bed concrete.

FIG. 6 is a cutaway perspective view illustrating a base support for base isolation according to an embodiment of the present invention, and FIG. 7 is an exploded perspective view illustrating a base support for base isolation according to an embodiment of the present invention.

6 and 7, the disk support for the base isolation according to an embodiment of the present invention is the upper plate 210, the first intermediate plate 220, the elastic disk 240, the second intermediate plate 230 and A first shear member 280 passing through the elastic disk and a second shear member 262 disposed between the second intermediate plate 230 and the bottom plate 260. It includes more.

A shear deformation portion is disposed between the upper plate 210 and the first intermediate plate 220. The shear deformation part includes a sus (SUS) plate 232 and a fluororesin plate 234.

The upper plate 210 is coupled to the side support member 212 extending downward, and a restoring member 270 is disposed between the side support member 212 and the first intermediate plate 220.

Unlike the above-described embodiment, the first intermediate plate 220 may have an octagonal shape instead of a rectangular shape, and the side support member 212 may also have an octagonal shape so as to correspond thereto. Eight 270 may be disposed corresponding to the shear deformation of the first intermediate plate 120.

This is to improve the disadvantage that when the rotational force is applied after the bridge top plate behaves in the four directions, the behavior of the expansion and contraction of the restoring member 270 is difficult, and the risk of breakage is large. Such a structure can accommodate displacement in all directions.

Since the description of the remaining components is substantially the same as the above-described base isolation disk support, duplicate description will be omitted.

8 is a cutaway perspective view showing a base support disk for isolation according to an embodiment of the present invention, Figure 9 is an exploded perspective view showing a base support disk for isolation according to an embodiment of the present invention. 10 is an enlarged cross-sectional view illustrating a locking device for a base isolation disk support according to an embodiment of the present invention.

8 to 10, the base support disk for isolation according to an embodiment of the present invention is the upper plate 310, the first intermediate plate 320, the elastic disk 340, the second intermediate plate 350 and A first shear member 380 penetrating the elastic disk and a second shear member 362 disposed between the second intermediate plate 350 and the lower plate 360. It includes more. In addition, the seismic isolating disk support is fixed to the upper slip portion 390 and the upper plate 310 seated on the upper plate 310 is locked to prevent the sudden movement of the upper slip portion (390) ( 30) further includes.

The upper plate 310 has a side support member 312 extending downward, and a first shear deformation portion is disposed between the upper plate 310 and the first intermediate plate 320. The first shear deformation part includes a sus (SUS) plate 332 and a fluororesin plate 334.

A second shear deformation part is disposed between the upper plate 310 and the upper slip part 390. The second shear deformation part includes a sus (SUS) plate 316 and a fluororesin plate 318.

The sustain plate 316 and the fluororesin plate 318 are fixed to the upper plate 310 and the upper slip part 390, respectively. For example, the sustain plate 316 may be coupled to a lower surface of the upper slip part 390, and the fluororesin plate 318 may be seated and fixed in a groove formed on the upper part of the upper plate 310. have. The sustain plate 316 may be formed of stainless steel, and the fluororesin plate 318 may be formed of a fluorine resin such as polytetrafluoroethylene (PTFE).

The sustain plate 316 and the fluororesin plate 318 may each be formed in a pair spaced apart from each other. A slip guide 392 is formed on a lower surface of the upper slip part 390 to protrude between the spaced apart sus plates 316. The slip guide 392 has a shape extending in one direction, and thus, the pair of fluororesin plates 318 are also spaced apart from each other with the slip guide 392 interposed therebetween. A guide groove 319 is formed on an upper surface of the upper plate 310 to correspond to the slip guide 392. In order to reduce friction between the upper slip part 390 and the upper plate 310, shear deformation parts such as a fluororesin and a susplate may be disposed between the slip guide 392 and the guide groove 319. .

The second shear deformation part prevents friction between the upper plate 310 and the upper slip part 390, and when the lateral pressure is applied in a direction parallel to the extending direction of the slip guide 392, the upper plate 310 Slip between the upper slip portion 390 and a shear displacement between the base support disk and the upper structure.

Slip in the first shear deformation portion may occur in various directions parallel to the ground, but slipping of the second shear deformation portion occurs only in one direction by the guide and the guide groove. For example, the moving direction of the second shear bottle-shaped portion may be a direction parallel to the throttle.

In order to facilitate the movement and restoration of the base support disk support, the friction coefficients of the fluororesin plates of the first shear deformation portion and the second shear deformation portion may be different from each other.

The seismic isolating disk support further includes a locking device 30 to limit movement of the upper slip portion 390 and to prevent sudden movement.

The locking device 30 is fixed to the upper plate 310 by the locking device fixing part 32, respectively. Alternatively, the locking device 30 may be fixed to the side support member 312. As a result, in both cases the locking device fixing part 32 will follow the movement of the upper plate 310. The locking device fixing part 32 is disposed in a pair, and is connected to the locking device fixing part through the fluid cover 34 and the fluid cover 34 between the locking device fixing parts 32. 38 is disposed.

The connecting portion 38 is also made in a pair corresponding to the locking device fixing portion 32, the pair of connecting portion 38 is connected by the pressing portion (35). The pressurization portion 35 is disposed inside the fluid cover 34 and surrounded by the fluid 37, and the fluid 37 is surrounded by the fluid cover 34. That is, the connection portion 38 is inserted into the fluid cover 34. The fluid 37 may be those used for existing hydraulic pistons, and preferably the fluid 37 comprises a silicone putty. The pressing part 35 is spaced apart from the fluid cover 34 by a predetermined distance to form an orifice 39 through which the fluid 37 can move.

The fluid cover 34 may have a cylindrical shape and has a guide protrusion 36 that is aligned with the front end groove 394 of the upper slip portion 390. A horizontal load generated by the movement of the upper slip part 390 may be transmitted to the locking device 30 by the shear coupling of the shear groove 394 and the guide protrusion 36.

 The horizontal load generated by the movement of the upper slip part 390 is transmitted to the fluid 37 through the locking device fixing part 32, the connecting part 38, and the pressing part 35. Accordingly, the fluid 37 moves through the orifice 39 formed between the press section 35 and the fluid cover 34 to accommodate the normal movement of the upper slip 390. However, when the upper slip portion 390 is moved rapidly, the reaction is reacted by the locking device 30 and the movement of the locking device 30 is locked, the sudden movement of the upper slip portion 390 Limited. In addition, when the rapid movement of the upper slip portion 390 is limited, the first shear deformation portion moves forward to absorb energy of the bridge upper structure due to the earthquake, thereby preventing damage to the bridge structure and the base support disk for seismic isolation. After the end, the locking force of the damping member 30 is alleviated so that the upper slip part 390 moves to accommodate the amount of expansion and contraction due to the temperature of the bridge structure.

Since the description of the remaining components is substantially the same as the above-described base isolation disk support, duplicate description will be omitted.

According to the conventional isolating disk support, the second shear deformation portion is formed under the lower plate. In a general bridge design, both a base isolation disk support having a second shear deformation portion and a base isolation disk support having no second shear deformation portion are employed, and when the second shear deformation portion is formed under the lower plate, in order to accommodate shear deformation, 2 The size of the lower plate is larger than that of the base plate for base isolation without shear deformation.

When the lower plate becomes larger, contaminants such as rainwater, dust, and bird droppings may cause a decrease in the performance of the base isolation disk support and an increase in maintenance costs. As the construction cost increases, it poses a difficulty in design and construction efficiency. On the other hand, according to the present invention, the second shear deformation portion is formed on the upper plate, the same size of the lower plate can overcome the difficulties of the existing technology.

The base support disk support employing the upper slip plate and the locking device may also employ an octagonal side support member similar to the base support disk support shown in FIGS. 7 and 8. In this case, the locking device fixing member is preferably coupled to the side support member.

FIG. 11 is a cutaway perspective view illustrating a base support for base isolation according to an embodiment of the present invention, and FIG. 12 is an exploded perspective view illustrating a base support for base isolation according to an embodiment of the present invention.

 The base support disk for isolation according to an embodiment of the present invention includes an upper plate 410, a first intermediate plate 420, an elastic disk 440, a second intermediate plate 450, and a lower plate 460. It further comprises a first shear member 480 penetrating the elastic disk and a second shear member 462 disposed between the second intermediate plate 450 and the lower plate 460.

A shear deformation portion is disposed between the upper plate 410 and the first intermediate plate 420. The shear deformation part includes a sus (SUS) plate 432 and a fluororesin plate 434.

The upper plate 410 is coupled to the side support member 412 extending downward, and the restoring member 470 is disposed on the outer surface of the side support member 412.

A plurality of restoration members 470 may be disposed corresponding to four sides of the side support member 412. Alternatively, depending on the use and function of the base isolation disk support, the restoring member may be disposed only on two sides instead of four sides. The restoration member 470 includes a guide bar 479 and an elastic body 472, and a first cover 471 and a second cover 473 are attached to both surfaces of the elastic body. The first cover 471 and the second cover 473 are connected by a coupling pin 475 passing through the elastic body 472. When the shear deformation of the shear deformation occurs, that is, when the upper plate 410 is horizontally moved relative to the first intermediate plate 420, the restoring member 470 is applied with a contractive force, and correspondingly the restoration The member 470 contracts, and when the applied pressure is reduced, the shear deformation of the base plate for base isolation can be restored by the elastic restoring force.

The guide bar 479 is connected to the contact plate 425 via the side support member 412. The contact plate 425 contacts the side of the first intermediate plate 420. According to the shear deformation of the base isolation disk support, shear deformation may occur between the first intermediate plate 420 and the restoration member 470. In order to smooth such a shear deformation (slip), the side suspension plate 423 may be attached to the side of the first intermediate plate in contact with the contact plate 425, in order to prevent the damage caused by friction, The contact surface of the contact plate 425 may be coated with a fluorine resin such as polytetrafluoroethylene (PTFE), or may include a sliding member made of fluorine resin.

 The restoration member 470 is functionally similar to the restoration member 170 illustrated in FIGS. 1 to 3. However, unlike the embodiment shown in FIGS. 1 to 3, since the restoring member 470 has the side support member 412 positioned on the outer surface, the size of the upper plate 410 is reduced, resulting in design and installation. It may have an advantage.

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 a disk support for base isolation, and has industrial applicability in the fields of civil engineering, construction, and the like.

Claims (19)

Upper plate;
A first intermediate plate positioned below the upper plate and capable of shear deformation of the upper plate when a lateral pressure is applied;
A second intermediate plate positioned below the first intermediate plate;
An elastic disk disposed between the first intermediate plate and the second intermediate plate;
A first shear member disposed through the elastic disk and transmitting a horizontal load to the first intermediate plate, the second intermediate plate and the elastic disk;
A lower plate positioned below the second intermediate plate; And
A second shear member disposed between the second intermediate plate and the lower plate, the second shear member having a disc shape to transmit a horizontal load to the second intermediate plate and the lower plate,
In order to guide the position of the second shear member, grooves corresponding to the shape of the second shear member are formed on the bottom surface of the second intermediate plate and the top surface of the lower plate, respectively, and have a vertical thickness of the second shear member. The disk base for base isolation, characterized in that smaller than the first shear member. The base plate of claim 1, wherein the first intermediate plate has a polygonal shape with a cut edge. The base plate of claim 1, wherein the first shear member is coupled to the first intermediate plate. The method of claim 3, wherein the first shear member is integral with a body portion located in the through hole of the elastic disk and a projection having a larger width than the body portion located in the through hole of the second intermediate plate. Isolation Disk Stand 4. The method of claim 3, wherein the first shear member comprises a body portion located in the through hole of the elastic disk and a protrusion located in the through hole of the second intermediate plate and having a width greater than that of the body portion. The body portion of the first shear member is screwed to the first intermediate plate by a first fastening portion, and the protrusion is screwed to the body portion by a second fastening portion, and the thread of the first fastening portion and the second fastening portion Isolating base plate, characterized in that inclined in opposite directions to each other. delete The disk support for base isolation according to claim 1, wherein the first shear member has a pin shape. The top plate of claim 1, wherein the top plate includes a side support member extending downward and is disposed between the side support member and the first intermediate plate to restore shear deformation of the top plate and the first intermediate plate. A base isolating disk support, characterized in that it further comprises a restoring member. The method of claim 8, wherein the restoring member,
A head in contact with the side support member;
An elastic body disposed between the head and the first intermediate plate to provide a restoring force;
A guide bar penetrating the elastic body and connected to the head;
And an auxiliary elastic body for compensating for the irreversible deformation of the elastic body. 10. The disk support according to claim 9, wherein the restoring member has a circular or rectangular cross section, and the head has a single or a plurality of guide bars connected thereto. 10. The disk support according to claim 9, wherein the restoring member is disposed in pairs corresponding to two parallel sides of the first intermediate plate. 9. The disk support for base isolation according to claim 8, wherein the side support member and the first intermediate plate have an octagonal shape on a plane, and eight restoration members are disposed. The base support of claim 1, further comprising: an upper slip portion disposed on the upper plate and capable of shear deformation with the upper plate, and a locking device for limiting sudden movement of the upper slip portion. 15. The method of claim 13, wherein the upper slip portion protrudes from the lower surface, and includes a sliding guide extending in one direction, the upper surface of the upper plate accommodates the sliding guide, the guide groove corresponding to the shape of the sliding guide is Base isolation disk support, characterized in that formed. The method of claim 14, wherein the locking device,
A pair of locking device fixing parts fixed to the upper plate;
A fluid cover disposed between the locking device fixing portion;
A connection part penetrating through the fluid cover and connected to the locking device fixing part;
A fluid received inside the fluid cover; And
It is accommodated in the fluid cover, the disk support for base isolation, characterized in that it comprises a pressing portion connected to the connection. The disk support for base isolation according to claim 15, wherein the pressing portion is spaced apart from the fluid cover at predetermined intervals to form an orifice through which the fluid can move. 16. The disk support according to claim 15, wherein the fluid cover has a guide protrusion protruding upward, and the upper slip portion has a guide groove for receiving the guide protrusion. The restoring member of claim 1, wherein the upper plate includes a side support member extending downward, and disposed on an outer surface of the side support member to restore shear deformation of the upper plate and the first intermediate plate. Isolation disk stand for further comprising a. The disk support according to claim 1, wherein the lower plate coupling member includes a set anchor, a stud bolt, or a combination of the set anchor and the stud bolt.

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