KR101835811B1 - Apparatus for testing performance of seismic isolation bearing - Google Patents

Apparatus for testing performance of seismic isolation bearing Download PDF

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Publication number
KR101835811B1
KR101835811B1 KR1020160008635A KR20160008635A KR101835811B1 KR 101835811 B1 KR101835811 B1 KR 101835811B1 KR 1020160008635 A KR1020160008635 A KR 1020160008635A KR 20160008635 A KR20160008635 A KR 20160008635A KR 101835811 B1 KR101835811 B1 KR 101835811B1
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South Korea
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horizontal
seismic isolation
connecting portion
elastic body
disposed
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KR1020160008635A
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Korean (ko)
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KR20170088581A (en
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이상석
유승규
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포인텍이앤씨(주)
(주)광원아이앤디
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Priority to KR1020160008635A priority Critical patent/KR101835811B1/en
Publication of KR20170088581A publication Critical patent/KR20170088581A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/14—Determining imbalance
    • G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
    • G01M1/22—Determining imbalance by oscillating or rotating the body to be tested and converting vibrations due to imbalance into electric variables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/14—Determining imbalance
    • G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
    • G01M1/24—Performing balancing on elastic shafts, e.g. for crankshafts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The apparatus for testing the performance of a seismic isolation base includes a vertical actuator disposed below the seismic isolation base for applying a vertical load to the seismic isolation base, a horizontal actuator for applying a horizontal force to the bottom plate of the seismic isolation base, An upper support disposed at an upper portion of the isolation pedestal, and a vertical displacement accommodating portion disposed between the upper support and the seismic isolation pedestal to receive a vertical displacement of the seismic isolation pedestal. The vertical displacement receiving portion includes a first horizontal connecting portion, a second horizontal connecting portion that is vertically spaced from the first horizontal connecting portion, and at least two elastic guide pieces disposed between the first horizontal connecting portion and the second horizontal connecting portion . Wherein the elastic guide includes an elastic body disposed between the first horizontal connecting portion and the second horizontal connecting portion and capable of being compressed by a vertical load applied to the elastic connecting member and the elastic body and having one end fixed to the first horizontal connecting portion, And a guide rod inserted into the second horizontal connection portion.

Description

TECHNICAL FIELD [0001] The present invention relates to a seismic isolator,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test apparatus, and more particularly, to an apparatus capable of testing the performance of an earthquake-isolator.

Large structures such as bridges are installed with bridge supports to smoothly receive relative movement between the upper and lower structures. In order to evaluate the performance of such bridge supports, a performance test is performed using a performance tester that applies a horizontal load or a horizontal displacement under a vertical load.

1 is a cross-sectional view of an apparatus for testing the performance of a seismic isolation support according to the prior art. 2 is a cross-sectional view showing a seismic isolation basin and a vertical displacement receiving unit in which a vertical displacement occurs due to the action of a horizontal force in an apparatus for testing the performance of a seismic isolation baser according to the prior art. Referring to Figure 1, a prior art performance testing apparatus includes a frame including a vertical support 42 and an upper support 44, a vertical actuator 30 for applying a vertical load to the seismic isolation pedestal 10, And a vertical displacement receiving portion 20 disposed between the support 10 and the upper support portion 44. For example, the seismic isolation pedestal 10 may be a pendulum type seismic isolation pedestal (friction pendulum pedestal). The pendulous seismic isolation pedestal 10 includes a lower plate 11, an upper plate 13 and a slip block 12 disposed between the lower plate 11 and the upper plate 13. The slip block 12 generates slippage with respect to the lower plate 11 and the upper plate 13 when a shear force is applied to the pendulum type seismic isolation pedestal 10, Thereby permitting horizontal displacement of the top plate 13.

A horizontal force is applied to the lower plate 11 or the upper plate 13 by a horizontal actuator in order to generate a shear force in the pendulum-type seismic isolation pedestal 10. As the distance between the lower plate 11 and the upper plate 13 is changed when the horizontal displacement is generated in the test body because the contact surface for performing the relative motion is spherical so that the pendulum- And the vertical displacement accommodating portion 20 receives the vertical displacement generated from the seismic isolation pedestal 10 by being contracted / compressed in the vertical direction. The vertical displacement receiving portion 20 includes an elastic body such as a spring, rubber, polyurethane or the like which can be shrunk or compressed.

However, in the process of generating the vertical displacement, as shown in FIG. 2, due to the action of the horizontal force, the seismic isolation pedestal 10, which is in contact with the horizontal displacement accommodation portion 20 and the horizontal displacement accommodation portion 20, The tilting of the upper plate 13 of the plate can occur.

When tilting of the seismic isolation pedestal 10 occurs as described above, there is a difference from the behavior of the seismic isolation pedestal 10 in actual use, and it is difficult to accurately evaluate the performance.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a performance testing apparatus capable of preventing the tilting of an earthquake-isolating support during a performance test of an earthquake-isolating support.

An apparatus for testing the performance of an earthquake-resistant separator according to an embodiment of the present invention includes a lower plate, an upper plate spaced apart from the lower plate in the vertical direction, and a shear deformation permitting member disposed between the lower plate and the upper plate. This is to test the performance of the pedestal. The performance testing apparatus includes a vertical actuator disposed below the seismic isolation pedestal for applying a vertical load to the seismic isolation pedestal, a horizontal actuator for applying a horizontal force to the bottom plate of the seismic isolation pedestal, And a vertical displacement accommodating portion disposed between the upper support portion and the seismic isolation pedestal for receiving a vertical displacement of the seismic isolation pedestal. The vertical displacement receiving portion includes a first horizontal connecting portion, a second horizontal connecting portion that is vertically spaced from the first horizontal connecting portion, and at least two elastic guide pieces disposed between the first horizontal connecting portion and the second horizontal connecting portion . Wherein the elastic guide includes an elastic body disposed between the first horizontal connecting portion and the second horizontal connecting portion and capable of being compressed by a vertical load applied to the elastic connecting member and the elastic body and having one end fixed to the first horizontal connecting portion, And a guide rod inserted into the second horizontal connection portion.

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According to one embodiment, the slip member comprises a fluorine-based resin, high-density polyethylene or brass.

According to one embodiment, the elastic body includes polyurethane or rubber, and has a cylindrical or polygonal columnar shape.

According to one embodiment, the elastic body includes a coil-shaped spring.

According to one embodiment, the elastic body includes a dish-shaped spring.

According to one embodiment, the second horizontal connection portion includes a second side guide portion extending from the edge toward the first horizontal connection portion. The first horizontal connection portion includes a first side guide portion extending from an edge toward the second horizontal connection portion and facing the side surface of the second side guide portion, and a second side guide portion coupled to the first side guide portion, As shown in Fig.

According to one embodiment, the slip guide includes a ball bearing, a fluororesin plate or a high density polyethylene plate.

According to the present invention, it is possible not only to accommodate the vertical displacement occurring in the performance test of the seismic isolation bases, but also to improve the stability and reliability of the test by preventing the tilting of the seismic isolation bases.

1 is a cross-sectional view of an apparatus for testing the performance of a seismic isolation support according to the prior art.
FIG. 2 is a sectional view showing a seismic isolation basin and a vertical displacement accommodating unit in which a vertical displacement occurs due to the action of a horizontal force in an apparatus for testing the performance of a seismic isolation baser according to the prior art.
FIG. 3A is a side view showing an apparatus for testing the performance of an earthquake-resistant separator according to an embodiment of the present invention.
3B is a plan view showing an apparatus for testing the performance of an earthquake-resistant separator according to an embodiment of the present invention.
3C is a side view showing a frame and a vertical actuator of an apparatus for testing the performance of an earthquake-proof separator according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view illustrating a seismic isolation pedestal in which shear deformation has occurred using an apparatus for testing the performance of an earthquake-isolating support according to an embodiment of the present invention.
FIGS. 5A, 5B, 5C, 5D, 5E and 5F are enlarged sectional views of a vertical displacement receiving portion of an apparatus for testing the performance of an earthquake-resistant separator according to embodiments of the present invention.

Hereinafter, an apparatus for testing the performance of an earthquake-resistant separator according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

FIG. 3A is a side view showing an apparatus for testing the performance of an earthquake-resistant separator according to an embodiment of the present invention. 3B is a plan view showing an apparatus for testing the performance of an earthquake-resistant separator according to an embodiment of the present invention. 3C is a side view showing a frame and a vertical actuator of an apparatus for testing the performance of an earthquake-proof separator according to an embodiment of the present invention.

3A to 3C, an earthquake-isolating bearing tester 200 according to the present invention includes a support frame 210, a vertical actuator 230, a transfer jig 240, a horizontal force application unit 250, and a horizontal actuator 260. [ .

The support frame 210 includes a pair of side support portions 211 having a lower end fixed to the floor A and an upper support portion 212 connected to an upper end of the side support portions 211. A vertical actuator 230 is disposed below the upper support 212.

The transfer jig 240 may be located outside or inside the support frame 210. For example, when the transfer jig 240 is located outside the support frame 210, the transfer jig 240 is mounted on the support jig 240 after the seismic isolation support to be tested is seated on the transfer jig 240, The seismic isolation pedestal can be positioned inside the support frame 210 by being transported into the frame 210 and disposed above the vertical actuator 230. [

The transfer jig 240 may have a bogie shape installed on the rail so as to move into the support frame 210.

In one embodiment, the transfer jig 24 may rest on the horizontal force applicator 250. For example, the horizontal force applying unit 250 may be disposed on the upper surface of the vertical actuator 230, and the transfer jig 240 may be moved over the horizontal force applying unit 250 to be disposed on the horizontal force applying unit 250. The transfer jig 240 is fixed to the horizontal force application platform 250 and the seismic isolation platform is shearly fixed to the transfer jig 240 so that the horizontal force due to the horizontal displacement of the horizontal force application platform 250 is transmitted to the transfer jig 240, Can be applied to earthquake segregation bearings.

A vertical load is applied to the horizontal force applying unit 250 by the vertical actuator 230 so that horizontal movement of the horizontal force applying unit 250 or horizontal movement of the horizontal force applying unit 250, The shear deformation of the sheath can be restrained. Therefore, a slip member such as PTFE or a shear deformable member such as an elastic body is disposed between the horizontal force application unit 250 and the vertical actuator 230 so as to permit horizontal displacement of the horizontal force application unit 250 desirable.

A vertical load is applied to the seismic isolation pedestal arranged above the vertical actuator 230 by the vertical actuator 230. Since the position of the upper support portion 212 is fixed to the floor, it functions as a reaction force band.

A vertical displacement receiving portion 270 is disposed between the upper support portion 212 and the seismic isolation pedestal. The vertical displacement receiver 270 receives the vertical displacement generated during the test of the seismic isolation pedestal. This will be described in more detail with reference to FIG.

FIG. 4 is a cross-sectional view illustrating a seismic isolation pedestal in which shear deformation has occurred using an apparatus for testing the performance of an earthquake-isolating support according to an embodiment of the present invention.

Referring to FIG. 4, a horizontal force applying unit 250 is disposed on the vertical actuator 230 of the performance testing apparatus, and an earthquake isolator 300 is disposed on the horizontal force applying unit 250. A vertical load is applied to the seismic isolation pedestal 300 by the vertical actuator 230.

A transfer jig 240 for transferring the seismic isolation base 300 may be disposed under the seismic isolation base 300. In another embodiment, the transfer jig 240 may transfer the seismic isolation base 300 to the horizontal force application unit 250, and then move the support frame out of the support frame.

The horizontal force applying unit 250 moves in the horizontal direction by a horizontal force applied by the horizontal actuator 260. [ The horizontal force applying unit 250 may include a slip member 252 contacting the vertical actuator 230 so that horizontal movement of the horizontal force applying unit 250 is not restricted. The slip member 252 may include a material having a low friction coefficient, for example, a fluororesin such as PTFE, HDPE (high density polyethylene), brass or the like.

In the present invention, the seismic isolation bases to be tested are not limited to the conventional seismic isolation bases. For example, the seismic isolation base may include a lower plate, an upper plate disposed on the lower plate, spaced apart from the lower plate, and a shear deformation allowing member disposed between the lower plate and the upper plate. The shear deformation allowing member may include a rubber elastic body, a rubber elastic body including a reinforcing plate, a rubber elastic body including lead (or tin), and a slip block.

In one embodiment, the seismic isolation pedestal 300 may be a pendulum type seismic isolation pedestal. For example, the seismic isolation pedestal 300 includes a lower plate 310, an upper plate 330, and a slip block 320 disposed between the lower plate 310 and the upper plate 330.

A horizontal force is exerted on the lower plate 310 or the upper plate 330 and a force is applied between the slip block 320 and the lower plate 310 or between the slip block 320 and the upper plate 330 Slip occurs, and shear deformation of the seismic isolation base 300 occurs. The slip block 320 may have a first contact surface in contact with the lower plate 310 and a second contact surface in contact with the upper plate 330 and the first contact surface and the second contact surface may be curved . For example, the first contact surface may be a spherical surface protruding toward the lower plate 310, and the second contact surface may be a spherical surface protruding toward the upper plate 330. The contact surface between the lower plate 310 and the upper plate 330 may have a shape corresponding to the first contact surface and the second contact surface of the slip block 320.

Between the slip block 320 and the lower plate 310 and between the slip block 320 and the lower plate 310 to facilitate sliding between the slip block 320, ) And the upper plate 330, a slip member including a material having a low coefficient of friction may be disposed.

The horizontal force applying unit 250 moves in the horizontal direction by a horizontal force applied by the horizontal actuator 260. [ Accordingly, the lower plate 310 of the seismic isolation pedestal 300 disposed on the horizontal force applying unit 250 also moves in the horizontal direction.

When the lower plate 310 is moved in the horizontal direction, the slip block 320 rotates and generates a slip with respect to the lower plate 310 and the upper plate 330, The horizontal position is maintained, so that the shear deformation of the seismic isolation base 300 occurs.

Vertical displacement of the seismic isolation pedestal 300 may occur as the slip block 320 rotates and the relative horizontal position relative to the lower plate 310 and the upper plate 330 varies The height of the seismic isolation pedestal 300 may vary).

The vertical displacement receiver 270 receives the vertical displacement of the seismic isolation pedestal 300. Specifically, the vertical displacement receiver 270 includes a resilient member that can be contracted and restored in the vertical direction, thereby accommodating the vertical displacement of the seismic isolation pedestal 300. In addition, the vertical displacement storage unit 270 can prevent the tilting of the seismic isolation pedestal 300, thereby enhancing the reliability of the performance test of the seismic isolation pedestal 300. The specific configuration of the vertical displacement receiving portion 270 will be described in detail below.

FIG. 5A is an enlarged cross-sectional view of a vertical displacement receiving portion of an apparatus for testing the performance of an earthquake-resistant separator according to an embodiment of the present invention.

5A, the vertical displacement receiving portion 270 includes a first horizontal connecting portion 271, a second horizontal connecting portion 272, and a second horizontal connecting portion 272 between the first horizontal connecting portion 271 and the second horizontal connecting portion 272 And a plurality of elastomer guides arranged. Wherein the elastic guide includes an elastic body disposed between the first horizontal connecting portion and the second horizontal connecting portion and capable of being compressed by a vertical load applied to the elastic connecting member and the elastic body and having one end fixed to the first horizontal connecting portion, And a guide rod inserted into the second horizontal connection portion. For example, the vertical displacement receiving portion 270 includes a first elastic body 273, a first guide rod 274, a second elastic body 277, and a second guide rod 278. 5A to 5F, the present invention is not limited thereto and may include at least two elastic guide members. For example, the elastic guide may be disposed at four corners. In addition, the number of the elastic guide may vary depending on the vertical load applied to the vertical displacement receiving portion 270.

The first horizontal connection portion 271 and the second horizontal connection portion 272 are vertically spaced. The first elastic body 273 and the second elastic body 277 are disposed between the first horizontal connection part 271 and the second horizontal connection part 272. The first elastic body 273 and the second elastic body 277 can be compressed / restored in the vertical direction corresponding to the vertical load. For example, the first elastic body 273 and the second elastic body 277 may include a material having excellent elasticity and restoring force such as rubber, polyurethane, etc., and may have a cylindrical or polygonal columnar shape.

The first guide rod 274 passes through the first elastic body 273 and has one end fixed to the first horizontal connection portion 271 and the other end inserted into the second horizontal connection portion 272. The second guide rod 278 passes through the second elastic body 277 and has one end fixed to the first horizontal connection portion 271 and the other end inserted into the second horizontal connection portion 272.

The second horizontal connection portion 272 includes guide holes into which the ends of the first guide rod 274 and the second guide rod 278 are inserted and the first guide rod 274 and the second guide rod 278 The side surface of the end portion of the guide rod 278 is in close contact with the inner wall surrounding the guide hole.

A pressing member 276 for transmitting a vertical load to the first elastic body 273 may be disposed between the first elastic body 273 and the second horizontal connecting portion 272. The second horizontal connecting part 272 is inserted into the end of the first guide rod 274 and the slidable member 275 for reducing frictional force when the first guide rod 274 moves in the vertical direction, . The slip member 275 may include a material having a low friction coefficient, for example, a fluororesin such as PTFE (polytetrafluoroethylene), HDPE (high density polyethylene), or the like. The pressing member 276 and the slip member 275 may be applied to the second elastic body 277 and the second guide rod 278 in the same manner.

According to this embodiment, the first guide rod 274 and the second guide rod 278 passing through the elastic body are fixed to the first horizontal connection portion 271 at one end and the other end is fixed to the second horizontal connection portion 272 . When the elastic bodies contract due to the vertical load, the interval between the first horizontal connection portion 271 and the second horizontal connection portion 272 decreases, allowing vertical displacement. When the distance between the first horizontal connecting portion 271 and the second horizontal connecting portion 272 decreases, the second horizontal connecting portion 272 is moved along the first guide rod 274 and the second guide rod 278 The first guide rod 274 and the second guide rod 278 are brought into close contact with the guide holes of the second horizontal connection portion 272 so that the first horizontal connection portion 271, It is possible to prevent the tilting of the two horizontal connection parts 272 and thus the tilting of the upper plate 330 of the seismic isolation support 300 contacting the vertical displacement receiving part 270 can be prevented .

5B, 5C, 5D, 5E and 5F are enlarged sectional views of a vertical displacement accommodating portion of an apparatus for testing the performance of an earthquake-resistant separator according to another embodiment of the present invention.

5B, the vertical displacement receiving portion includes a first horizontal connecting portion 371, a second horizontal connecting portion 372, a first elastic body 373, a first guide rod 374, a second elastic body 377, 2 guide rod 378.

A pressing member 376 for transmitting a vertical load to the first elastic body 373 may be disposed between the first elastic body 373 and the second horizontal connecting portion 372. The second horizontal connecting portion 372 is inserted into the end of the first guide rod 374 and slides on the sliding member 375 to reduce frictional force when the first guide rod 374 moves in the vertical direction. .

The first elastic body 373 may further include a reinforcing member 379 surrounding the first guide rod 374. [ The reinforcing member 379 may increase the reaction force of the first elastic body 373 with respect to the vertical load. For example, the reinforcing member 379 may be made of a steel material such as steel.

5C, the vertical displacement receiving portion includes a first horizontal connecting portion 471, a second horizontal connecting portion 472, a first elastic body 473, a first guide rod 474, a second elastic body 477, 2 guide rod 478. [

 The second horizontal connection part 472 is inserted with the end of the first guide rod 474 and a slip member 475 for reducing frictional force when the first guide rod 474 moves in the vertical direction .

In the present embodiment, the first elastic body 473 and the second elastic body 477 have a coil spring shape.

5D, the vertical displacement receiving portion includes a first horizontal connecting portion 571, a second horizontal connecting portion 572, a first elastic body 573, a first guide rod 574, a second elastic body 577, 2 guide rod 578.

 The second horizontal connection part 572 is inserted with an end of the first guide rod 574 and a slip member 575 for reducing frictional force when the first guide rod 574 moves in the vertical direction .

In this embodiment, the first elastic body 573 and the second elastic body 577 have the shape of a disc spring (washer).

 5e, the vertical displacement accommodating portion includes a first horizontal connecting portion 671, a second horizontal connecting portion 672, a first elastic body 673, a first guide rod 674, a second elastic body 677, A guide rod 678, a third elastic body 676, and a fourth elastic body 679.

In the present embodiment, the first elastic body 673 and the second elastic body 677 are cylindrical or polygonal columnar elastic bodies (rubber, polyurethane, etc.), and the third elastic body 676 and the fourth elastic body 677 679 have a dish spring (washer) configuration.

The first elastic body 673 and the third elastic body 676 are continuously arranged in the vertical direction and the first guide rod 674 passes through the first elastic body 673 and the third elastic body 676, do.

The second elastic body 677 and the fourth elastic body 679 are continuously arranged in the vertical direction and the second guide rod 678 passes through the second elastic body 677 and the fourth elastic body 679 do.

The first elastic member 673 and the second elastic member 673 are provided between the first elastic member 673 and the second horizontal connection portion 672 and between the first elastic member 673 and the third elastic member 676, A pressing member can be disposed. The second horizontal connection part 672 is inserted into the end of the first guide rod 674 and slides on the sliding member 675 to reduce the frictional force when the first guide rod 674 moves in the vertical direction. .

5f, the vertical displacement receiving portion includes a first horizontal connecting portion 771, a second horizontal connecting portion 772, a first elastic body 773, a first guide rod 774, a second elastic body 777, 2 guide rod 778 and a slip guide portion 779. [

The second horizontal connection portion 772 includes a second side guide portion 776b extending from the edge toward the first horizontal connection portion 771. [ The first horizontal connecting portion 771 includes a first side guiding portion 776a extending from the edge toward the second horizontal connecting portion 772. The slip guide part 779 is coupled to the first side surface guide part 776a and is arranged to face the side surface of the second side surface guide part 776b. When the vertical displacement of the second horizontal connection part 772 occurs, the second side guide part 776b also moves in the vertical direction. The slidable guide portion 779 contacts the second side surface guide portion 776b to prevent the tilting of the second horizontal connection portion 772 and also prevents the vertical movement of the second side surface guide portion 776b It is possible to prevent the movement from being constrained.

The slip guide part 779 may be coupled to the first side guide part 776a through bolts or the like. For example, the slip guide portion 779 may include a ball bearing, a fluororesin plate, a high-density polyethylene plate, etc. In this embodiment, the slip guide portion 779 includes a ball bearing.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

The present invention can be used for a performance test of an earthquake isolator.

Claims (8)

An apparatus for testing the performance of an earthquake isolator comprising a lower plate, an upper plate spaced vertically from the lower plate, and a shear deformation permitting member disposed between the lower plate and the upper plate,
A vertical actuator disposed under the seismic isolation pedestal for applying a vertical load to the seismic isolation pedestal;
A horizontal actuator for applying a horizontal force to the lower plate of the seismic isolation pedestal;
An upper support disposed above the seismic isolation support; And
A vertical displacement receiver disposed between the upper support and the seismic isolation pedestal for receiving a vertical displacement of the seismic isolation pedestal,
The vertical displacement accommodating portion includes:
A first horizontal connecting portion;
A second horizontal connection part vertically spaced from the first horizontal connection part; And
And at least two elastic guides disposed between the first horizontal connection portion and the second horizontal connection portion,
Wherein the elastic guide includes an elastic body disposed between the first horizontal connecting portion and the second horizontal connecting portion and capable of being compressed by a vertical load applied to the elastic connecting member and the elastic body and having one end fixed to the first horizontal connecting portion, And a guide rod inserted into the second horizontal connection portion,
Wherein the second horizontal connection portion includes a slip member inserted into the other end of the guide rod and in close contact with a side surface of the other end of the guide rod. delete The apparatus according to claim 1, wherein the slip member comprises a fluororesin, high-density polyethylene, or brass. The apparatus according to claim 1, wherein the elastic body comprises polyurethane or rubber, and has a cylindrical or polygonal columnar shape. The apparatus according to claim 1, wherein the elastic body includes a coil-shaped spring. 2. The apparatus according to claim 1, wherein the elastic body comprises a dish-shaped spring. An apparatus for testing the performance of an earthquake isolator comprising a lower plate, an upper plate spaced vertically from the lower plate, and a shear deformation permitting member disposed between the lower plate and the upper plate,
A vertical actuator disposed under the seismic isolation pedestal for applying a vertical load to the seismic isolation pedestal;
A horizontal actuator for applying a horizontal force to the lower plate of the seismic isolation pedestal;
An upper support disposed above the seismic isolation support; And
A vertical displacement receiver disposed between the upper support and the seismic isolation pedestal for receiving a vertical displacement of the seismic isolation pedestal,
The vertical displacement accommodating portion includes:
A first horizontal connecting portion;
A second horizontal connection part vertically spaced from the first horizontal connection part; And
And at least two elastic guides disposed between the first horizontal connection portion and the second horizontal connection portion,
Wherein the elastic guide includes an elastic body disposed between the first horizontal connecting portion and the second horizontal connecting portion and capable of being compressed by a vertical load applied to the elastic connecting member and the elastic body and having one end fixed to the first horizontal connecting portion, And a guide rod inserted into the second horizontal connection portion,
The second horizontal connection portion includes a second side guide portion extending from the edge toward the first horizontal connection portion,
The first horizontal connection portion includes a first side guide portion extending from an edge toward the second horizontal connection portion and facing the side surface of the second side guide portion, and a second side guide portion coupled to the first side guide portion, And a slip guide portion contacting the slip guide portion. The apparatus of claim 7, wherein the slip guide comprises a ball bearing, a fluororesin plate, or a high-density polyethylene plate.
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KR20210025975A (en) 2019-08-28 2021-03-10 (주)제이.케이.에스 Apparatus for testing seismic isolation devices
KR20210025976A (en) 2019-08-28 2021-03-10 (주)제이.케이.에스 Apparatus for testing seismic isolation devices with specimen protection function

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