WO2020075685A1 - Dispositif d'isolation sismique - Google Patents

Dispositif d'isolation sismique Download PDF

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Publication number
WO2020075685A1
WO2020075685A1 PCT/JP2019/039527 JP2019039527W WO2020075685A1 WO 2020075685 A1 WO2020075685 A1 WO 2020075685A1 JP 2019039527 W JP2019039527 W JP 2019039527W WO 2020075685 A1 WO2020075685 A1 WO 2020075685A1
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Prior art keywords
hard material
seismic isolation
terminal
region
central
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PCT/JP2019/039527
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English (en)
Japanese (ja)
Inventor
隆浩 森
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株式会社ブリヂストン
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Priority to CN201980066675.7A priority Critical patent/CN112823251B/zh
Priority to JP2020551150A priority patent/JP7333334B2/ja
Publication of WO2020075685A1 publication Critical patent/WO2020075685A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/40—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground

Definitions

  • the present invention relates to a seismic isolation device.
  • the conventional seismic isolation device is provided with a laminated structure in which hard materials and soft materials are alternately arranged in the vertical direction, and the terminal arranged in at least one of the upper and lower end regions of the laminated structure.
  • the outer edge in the width direction of the hard material is extended outward in the width direction with respect to the central hard material arranged in the central region of the laminated structure (for example, refer to Patent Document 1).
  • the terminal hard material supports the central hard material to cause buckling of the laminated structure. It is possible to suppress local stress concentration that occurs in the portion on the compression side (the end region).
  • the seismic isolation device protects the structure by lengthening the natural vibration cycle to improve seismic isolation performance.
  • the larger the width of the terminal hard material the greater the effect of improving buckling.
  • the width of the terminal hard material is too large, when the laminated structure is largely elastically deformed, the outer edge in the width direction of the terminal hard material easily separates from the soft material due to stress concentration, and the surface of durability There was room for improvement.
  • the buckling improvement effect largely depends on the width of the upper and lower end hard materials, but in the seismic isolation device described in Patent Document 1, the natural vibration period of the structure may be shortened.
  • the object of the present invention is to provide a seismic isolation device having excellent buckling resistance and durability without impairing the required seismic isolation performance.
  • the seismic isolation apparatus is a seismic isolation apparatus including a laminated structure in which hard materials and soft materials are alternately arranged in the vertical direction, and the laminated structure includes upper and lower sides, respectively. Located between the two end regions, a central region located between the two end regions, and located adjacent the central region and the end regions between the central region and the end regions.
  • the hard material disposed in the end region is divided into two intermediate regions, and the hard material disposed in the end region is at least one end hard material, and the hard material disposed in the central region is at least one center hard material.
  • the hard material disposed in the intermediate region is at least one intermediate hard material, and the widthwise outer edge of the terminal hard material is positioned more widthwise outer than the widthwise outer edge of the central hard material.
  • the widthwise outer edge of the quality material is located at the widthwise outer side than the widthwise outer edge of the central hard material and at the widthwise inner side than the widthwise outer edge of the terminal hard material, and further, the widthwise direction of the terminal hard material.
  • the ratio (W2 / W1) of the width W2 between the outer edges in the width direction of the central hard material with respect to the width W1 between the outer edges is 0.6 ⁇ (W2 / W1) ⁇ 0.97.
  • a plurality of the intermediate hard materials are arranged in the intermediate region, and the widths of the plurality of intermediate hard materials decrease from the end region side toward the central region side. It is preferable that In this case, it is possible to further suppress the local stress concentration that occurs in the terminal region and further improve the durability.
  • the seismic isolation apparatus it is preferable that a plurality of the central hard materials are arranged in the central region, and the plurality of central hard materials have the same width. In this case, even if the central hard material is plural, the required seismic isolation performance can be more reliably exhibited.
  • the seismic isolation apparatus it is preferable that a plurality of terminal hard materials are arranged in the terminal region, and the plurality of terminal hard materials have the same width. In this case, it is possible to further suppress the local stress concentration that occurs in the terminal region and further improve the buckling resistance and durability.
  • a plurality of terminal hard materials are arranged in the terminal region, and the widths of the plurality of terminal hard materials increase from the central region side toward the terminal region side.
  • the end hard material adjacent to the intermediate hard material, the intermediate hard material, and the central hard material adjacent to the intermediate hard material in a vertical cross-sectional view of the seismic isolation device, the end hard material adjacent to the intermediate hard material, the intermediate hard material, and the central hard material adjacent to the intermediate hard material.
  • the angle A on the acute angle side formed by the virtual ridge line connecting the outer edges in the width direction with respect to the vertical direction may be 45 ° to 80 °. In this case, buckling can be made difficult to occur.
  • the virtual ridgeline may be a straight line in a vertical sectional view of the seismic isolation device. In this case, it is possible to further prevent buckling.
  • the ratio (H3 / H0) of the vertical height H3 of the intermediate region to the vertical height H0 of the laminated structure is 0.01 to 0.1. can do.
  • the outer edge in the width direction of the terminal hard material is less likely to peel off from the soft material due to stress concentration, and the durability is improved.
  • the outer surface shape of the laminated structure may be a combination of linear shapes in a vertical sectional view of the seismic isolation device.
  • the proportion of the soft material occupied can be reduced as compared with the case where the outer surface has a curved shape, seismic isolation performance can be improved.
  • reference numeral 1A is a seismic isolation device according to the first embodiment of the present invention.
  • the seismic isolation device 1A includes a laminated structure 10.
  • the laminated structure 10 includes hard materials 11 and soft materials 12 alternately arranged in the vertical direction.
  • the seismic isolation device 1A has a central axis O that extends in the vertical direction, and the central axis O can be erected along the vertical axis.
  • a lower plate 20 is fixed to the lower end of the laminated structure 10.
  • the lower plate 20 can be fixed to a foundation (not shown) that supports a structure (not shown) such as a building, a bridge, or a house.
  • An upper plate 30 is fixed to the upper end of the laminated structure 10.
  • the upper plate 30 can be fixed to the structure, for example.
  • the lower plate 20 and the upper plate 30 are formed of circular steel plates.
  • the hard material 11 is a layer having rigidity.
  • the hard material 11 is a circular metal plate, specifically, a circular steel plate.
  • the soft material 12 is a circular elastic plate, specifically, a circular rubber plate.
  • the hard material 11 and the soft material 12 have the same thickness. However, the thicknesses of the hard material 11 and the soft material 12 can be changed appropriately.
  • the widthwise outer edge 11e of the hard material 11 is covered with the soft material 12 by the outer layer 13.
  • the outer layer 13 is a cylindrical rubber plate. However, the outer layer 13 can be omitted.
  • the laminated structure 10 includes two end regions R1 located on the upper side and the lower side, respectively, and a central region R2 located between the two end regions R1 and the center. It is partitioned between the region R2 and the terminal region R1 into two intermediate regions R3 located adjacent to the central region R2 and the terminal region R1.
  • the terminal region R1 is at least one of a virtual region continuous downward from the upper end of the laminated structure 10 or a virtual region continuous upward from the lower end of the laminated structure 10.
  • the central region R2 is a virtual region located at the center of the laminated structure 10 in the vertical direction.
  • the intermediate region R3 is at least one of a virtual region continuous downward from the lower end of the upper end region R1 or a virtual region continuous upward from the upper end of the lower end region R1. It is a virtual region that does not include the central region R2.
  • the terminal region R1, the central region R2, and the intermediate region R3 are respectively one vertical height H1 and the other vertical height H1 ′ of the terminal region R1, the vertical height H2 of the central region R2, and the intermediate region. It is defined by one vertical height H3 of R3 and the other vertical height H3 '.
  • H1 / H0 0.01 to 0.24
  • H1 ′ / H0 0.01 to 0.24
  • H2 / H0 0.5 to 0.96
  • H3 / H0 0.01 to 0.24
  • H3 ′ / H0 0.01 to 0.24.
  • the hard material arranged in the terminal region R1 is at least one terminal hard material 111.
  • the hard material arranged in the central region R2 is at least one central hard material 112.
  • the hard material arranged in the intermediate region R3 is at least one intermediate hard material 113.
  • the seismic isolation device 1A according to the present embodiment has one terminal hard material as the terminal hard material 111.
  • the seismic isolation device 1A has a plurality (10 in the present embodiment) of central hard materials as the central hard material 112.
  • the central hard material 112 is the same central hard material.
  • the seismic isolation device 1A has one intermediate hard material as the intermediate hard material 113.
  • the widthwise position of the widthwise outer edge 111e of the terminal hard material 111, the widthwise outer edge 113e of the intermediate hard material 113, and the widthwise outer edge 112e of the central hard material 112 is as follows. The relationship (1) is satisfied.
  • the terminal hard material 111 has a widthwise outer edge 111e located in the widthwise outer side than the widthwise outer edge 112e of the central hard material 112 in any case.
  • the width direction outer edge 111e of the end hard material 111 located on the innermost side in the width direction of the width direction outer edge 111e is located in the width direction outer side than the width direction outer edge 112e of the central hard material 112. Position it.
  • the widthwise outer edge 111e of the terminal hard material 111 located at the innermost side in the width direction of the widthwise outer edge 111e is wider than any widthwise outer edge 112e of the central hard material 112.
  • the intermediate hard material 113 has a widthwise outer edge 113e located in a widthwise outer side than the widthwise outer edge 112e of the central hard material 112 and a widthwise inner side than the widthwise outer edge 111e of the terminal hard material 111 in any case. ing.
  • the widthwise outer edge 113e of the intermediate hard material 113 whose widthwise outer edge 113e is located on the innermost side in the widthwise direction is more outward than the widthwise outer edge 112e of the central hard material 112 in the widthwise direction. Position it.
  • the widthwise outer edge 113e of the intermediate hard material 113 positioned on the innermost side in the width direction of the widthwise outer edge 113e is wider than any widthwise outer edge 112e of the central hard material 112. Position it outside in the direction.
  • the widthwise outer edge 113e of the intermediate hard material 113 located on the outermost side in the widthwise direction of the widthwise outer edge 113e is located more inward in the widthwise direction than the widthwise outer edge 111e of the terminal hard material 111. Position it.
  • the width direction outer edge 113e of the intermediate hard material 113 located on the outermost side in the width direction of the width direction outer edge 113e is wider than the width direction outer edge 111e of any of the terminal hard materials 111. Position inward.
  • width W1 of the terminal hard material 111 W1
  • W2 of the central hard material 112 W2
  • the hard material 11 is a circular plate. Further, in the present embodiment, the terminal hard material 111, the intermediate hard material 113, and the central hard material 112 are arranged coaxially on the central axis O. In the present embodiment, the width W1 of the terminal hard material 111, the width W2 of the central hard material 112, and the width W3 between the widthwise outer edges 113e of the intermediate hard material 113 (hereinafter, also referred to as “width W3 of the intermediate hard material 113”). Is the diameter of the hard material 11.
  • the ratio ⁇ of the width W2 of the central hard material 112 to the width W1 of the terminal hard material 111 is the ratio ( ⁇ 2 / ⁇ 1) of the diameter ⁇ 2 of the central hard material 112 to the diameter ⁇ 1 of the terminal hard material 111. ) Can be replaced.
  • the hard material 11 is not limited to a circular plate, and a deformed plate such as a polygon can be adopted.
  • the width W1 of the terminal hard material 111, the width W2 of the central hard material 112, and the width W3 of the intermediate hard material 113 can be the diameter of the circumscribed circle of the hard material 11.
  • W1 is the maximum width of the terminal hard material 111
  • W2 is the minimum width of the central hard material 112.
  • the terminal hard material 111 since the terminal hard material 111 has the width-direction outer edge 111e located outside the width-direction outer edge 112e of the central hard material 112, the laminated structure 10 Even when is elastically deformed abruptly, the terminal hard material 111 supports the central hard material 112, which causes the buckling of the laminated structure 10 and locally occurs in the compression side portion (terminal region R1). Stress concentration can be suppressed.
  • the inventor of the present application has confirmed that the buckling property is improved when only the width W1 of the terminal hard material 111 is simply increased.
  • simply increasing W1 shortens the natural vibration period of a structure such as a building, so that there is a problem that the original seismic isolation performance cannot be exhibited. Therefore, as a result of earnest and testing / research, the inventor of the present application, when a large width W1 of the terminal hard material 111 is secured, if the width W2 of the central hard material 112 is reduced, the natural vibration period of the structure is shortened. We have come to realize that the phenomenon can be suppressed.
  • the ratio ⁇ of the width W2 of the central hard material 112 to the width W1 of the terminal hard material 111 is 0.97 or less, the buckling characteristics are maintained while keeping the natural vibration period of the structure long. I confirmed to improve. Therefore, according to the seismic isolation apparatus 1A according to the present embodiment, the ratio ⁇ of the width W2 of the central hard material 112 to the width W1 of the terminal hard material 111 is 0.97 or less, which improves the buckling performance. However, the required seismic isolation performance is not impaired.
  • the ratio ⁇ of the width W2 of the central hard material 112 to the width W1 of the terminal hard material 111 is set to less than 0.6, the width of the central hard material 112 becomes small, and the buckling performance and the load supporting ability deteriorate.
  • the ratio ⁇ of the width W2 of the central hard material 112 to the width W1 of the terminal hard material 111 is set to 0.6 or more, the buckling performance improving effect is obtained and the load supporting ability is not lowered.
  • the intermediate hard material is provided in the two intermediate regions R3 located between the central region R2 and the terminal region R1 and adjacent to the central region R2 and the terminal region R1.
  • 113 is arranged, and the intermediate hard material 113 has a widthwise outer edge 113e located outside the widthwise outer edge 112e of the central hard material 112 in the widthwise direction and inside the widthwise outer edge 111e of the terminal hard material 111 in the widthwise direction. Therefore, even when the laminated structure 10 is largely elastically deformed, local peeling does not occur on the compression side of the widthwise outer edge 111e of the terminal hard material 111 adjacent to the intermediate hard material 113.
  • the seismic isolation device 1A according to this embodiment has improved buckling resistance. Further, when compared with the seismic isolation device in which the width W1 of the terminal hard material 111 is the same and ⁇ exceeds 0.97, the seismic isolation device 1A according to the present embodiment can have a longer natural vibration period. Further, when compared with a seismic isolation device in which the width W2 of the central hard material 112 is the same and ⁇ exceeds 0.97, the seismic isolation device 1A according to the present embodiment shows that the widthwise outer edge 111e of the terminal hard material 111 is compressed. Local peeling that occurs on the side can be suppressed.
  • the seismic isolation device 1A of the present embodiment is excellent in buckling resistance and durability while maintaining the load bearing ability without impairing the required seismic isolation performance.
  • the terminal region R1 includes one terminal hard material 111.
  • the central region R2 contains a plurality of central hard materials 112.
  • the widths W2 of the central hard material 112 are the same.
  • the intermediate region R3 includes one intermediate hard material 113.
  • the seismic isolation device 1 can have at least one terminal hard material as the terminal hard material 111 in the terminal region R1.
  • the widthwise outer edge 111e of each terminal hard material 111 is positioned outside the widthwise outer edge 112e of the central hard material 112 in the width direction.
  • the width W1 of each terminal hard material 111 becomes smaller toward the intermediate region R3 side.
  • the seismic isolation device 1 may have at least one central hard material as the central hard material 112 in the central region R2.
  • each central hard material 112 is preferably the same central hard material.
  • the seismic isolation device 1 may have at least one intermediate hard material as the intermediate hard material 113 in the intermediate region R3.
  • each intermediate hard material 113 is located outside the widthwise outer edge 112e of the central hard material 112 in the widthwise direction and inside the widthwise outer edge 111e of the terminal hard material 111 in the widthwise direction.
  • the width W3 of the intermediate hard material 113 becomes smaller from the end region R1 side toward the central region R2 side.
  • Specific examples of the number N1 of the terminal hard material 111, the number N2 of the central hard material 112, and the number N3 of the intermediate hard material 113 include 1 to 10 for N1 and 1 to 3 for N3.
  • the phantom demarcation line in each of the end region R1, the central region R2, and the intermediate region R3 in a vertical cross-sectional view (a state viewed in a cross-section including the central axis of the seismic isolation device).
  • the description will be given using L1A to L3A and virtual partition lines L1B to L3B.
  • the partition line L1A is a partition line that passes through the fixing surfaces of the lower plate 20 and the soft material 12 adjacent to the lower plate 20.
  • the partition line L3A is a partition line that passes through the soft material 12 between the lower end hard material 111 and the intermediate hard material 113 adjacent to the lower end hard material 111, and divides the soft material 12 into upper and lower parts.
  • the partition line L2A is a partition line that passes through the lower end surface of the lowermost central hard material 112.
  • the partition line L1B is a partition line that passes through the fixing surfaces of the upper plate 30 and the soft material 12 adjacent to the upper plate 30.
  • the partition line L3B is a partition line that passes through the soft material 12 between the upper terminal hard material 111 and the intermediate hard material 113 adjacent to the terminal hard material 111, and divides the soft material 12 into upper and lower parts.
  • the division line L2B is a division line that passes through the upper end surface of the uppermost central hard material 112.
  • the two end regions R1 are divided as follows.
  • the lower end region R1 is partitioned by the partition line L1A and the partition line L3A.
  • the upper end region R1 is partitioned by the partition line L1B and the partition line L3B.
  • the central region R2 is partitioned by the partition line L2A and the partition line L2B.
  • the two intermediate areas R3 are divided as follows.
  • the lower intermediate region R3 is partitioned by the partition line L3A and the partition line L2A.
  • the intermediate region R3 on the upper side is partitioned by the partition line L3B and the partition line L2B.
  • a plurality of central hard materials 112 are arranged in the central region R2, and it is preferable that the plurality of central hard materials 112 have the same width W2.
  • the widths W2 of the plurality of central hard materials 112 are the same. In this case, even if the central hard material 112 is plural, the required seismic isolation performance can be exhibited more reliably.
  • the terminal hard material 111, the central hard material 112, and the intermediate hard material 113 are arranged in each of these areas R1 to R3. Preferably.
  • a region of H2 of 0.5 to 0.96 ⁇ H0 is a central region R2, H3 (H3 ′), and a region of 0.01 to 0.1 ⁇ H0 is an intermediate region R3, H1 (H1 ′). ) Is a region of 0.01 to 0.24 ⁇ H0 as the end region R1.
  • reference numeral 1B is a seismic isolation device according to the second embodiment of the present invention.
  • the terminal region R1 includes a plurality of (two in the present embodiment) terminal hard materials 111.
  • the terminal hard material 111 is the same terminal hard material, and the width W1 of the terminal hard material 111 is the same, respectively.
  • the central region R2 includes a plurality (10 in this embodiment) of the central hard material 112.
  • the central hard material 112 is the same central hard material, and the width W2 of the central hard material 112 is the same, respectively.
  • the intermediate region R3 includes a plurality (two in the present embodiment) of intermediate hard material 113.
  • the width W3 of the intermediate hard material 113 decreases from the end region R1 side toward the central region R2 side.
  • the widthwise outer edge 113e of each intermediate hard material 113 is positioned outside the widthwise outer edge 112e of the central hard material 112 in the widthwise direction and inside the widthwise outer edge 111e of the terminal hard material 111 in the widthwise direction.
  • a plurality of intermediate hard materials 113 are arranged in the intermediate region R3, and the width W3 of the intermediate hard materials 113 is from the end region R1 side to the central region R2 side. It is preferable that it becomes smaller toward In the present embodiment, the width W3 of the plurality of intermediate hard materials 113 becomes smaller from the end region R1 side toward the central region R2 side. In this case, local stress concentration that occurs in the terminal region R1 can be further suppressed, and durability can be further improved.
  • a plurality of terminal hard materials 111 are arranged in the terminal region R1, and it is preferable that the plurality of terminal hard materials 111 have the same width W1.
  • the widths W1 of the plurality of terminal hard materials 111 are the same. In this case, since the plurality of terminal hard materials 111 are used, it is possible to further suppress local stress concentration occurring in the terminal region R1 and further improve the buckling resistance and durability.
  • the virtual ridge line L formed by connecting 111e, 113e, and 112e is assumed to have an acute angle A of 45 ° to 80 ° with respect to the vertical direction in the vertical sectional view of the seismic isolation device 1B. You can If the angle A is less than 45 °, the effect of suppressing buckling is small. When the angle A exceeds 80 °, the effect of suppressing buckling is small, and local peeling easily occurs on the compression side of the outer edge 111e in the width direction of the terminal hard material 111.
  • the virtual ridge line L has an acute angle A of 45 ° to 80 ° with respect to the vertical direction in the vertical sectional view of the seismic isolation device 1B.
  • the angle A is a numerical value in the range of 45 ° to 80 °. Therefore, according to the present embodiment, the effect of improving buckling is particularly high.
  • the virtual ridge line L is a straight line in the vertical cross-sectional view of the seismic isolation device 1B. In this case, it is possible to further prevent buckling.
  • the outer surface shape (contour shape) of the laminated structure 10 is a combination of linear shapes in the vertical sectional view of the seismic isolation device.
  • the contour shape of the laminated structure 10 has a large difference between the widthwise outer edge 111e of the terminal hard material 111 and the widthwise outer edge 112e of the central hard material 112, that is, shown in FIG.
  • the shape is scooped toward the central axis O. Therefore, according to the present embodiment, the ratio of the soft material to the outer surface can be reduced as compared with the curved surface, so that the seismic isolation performance can be improved.
  • the widthwise outer edge 111e of the terminal hard material 111 adjacent to the intermediate hard material 113, and the widthwise outer edge of the intermediate hard material 113 are adjacent.
  • a virtual ridge line that connects the widthwise outer edge 112e of the central hard material 112 adjacent to the intermediate hard material 113 and 113e has a curved shape that is convex toward the central axis O.
  • the outer surface shape of the laminated structure 10 is a curved shape that is convex toward the central axis O, such as an arcuate cross-section or an arc-like shape. Is also included.
  • the contour shape of the laminated structure 10 is a curved shape convex toward the central axis O, rather than the seismic isolation device.
  • the proportion occupied by the soft material 12 decreases. Therefore, the seismic isolation device according to the present invention can exert more seismic isolation performance than the seismic isolation device having the curved outer surface.
  • the seismic isolation device may include a plug (core material).
  • a plug extending along the central axis O can pass through the central portion of the laminated structure 10.
  • the plug is preferably made of a metal such as lead or tin.
  • the various configurations adopted in the above-described embodiments can be appropriately replaced with each other.
  • the widths W1 of the plurality of terminal hard materials 111 are the same, but the widths W1 of the plurality of terminal hard materials 111 are the same as those of the second embodiment.
  • the intermediate hard material 113 Similar to the intermediate hard material 113, it can be reduced from the end region R1 side toward the central region R2 side. That is, according to the present invention, when the plurality of terminal hard materials 111 are arranged in the terminal region R1, the width W1 of the plurality of terminal hard materials 111 is increased from the central region R2 side toward the terminal region R1 side. It can also be made larger.
  • FEM analysis based on W2 / W1 (hereinafter, also referred to as "FEM analysis based on width ratio”) and the angle A of the virtual ridge line L are performed.
  • FEM analysis also referred to as “angle-based FEM analysis”
  • two types of analysis were performed. In the FEM analysis, buckling strain, breaking strain and natural vibration period were verified.
  • Marc analysis software manufactured by MSC Software was used for the FEM analysis.
  • the hard material mesh is a tetrahedron with 50 to 120 mm on each side, and the number of meshes is 54.
  • the mesh of the soft material was a tetrahedron having 50 to 120 mm on each side and the number of meshes was 54. Further, the following [Table 1] shows the parameters of the analytical model.
  • the "buckling strain” is the strain (%) when the analytical model is buckled, and the strain mainly occurs in the terminal region.
  • the “break strain” is the strain (%) when the soft material breaks, and the strain mainly occurs in the terminal region. Therefore, in this evaluation, it is determined that the larger the value of the strain at break, the less likely it is to break and the better the break performance. “NA” is an unusable value. Further, the "100% equivalent period" T is obtained as follows. When a displacement (x) -load (y) graph of a laminated structure is drawn, it usually has a loop shape. Here, when the + (plus) displacement x position on the loop and the-(minus) displacement x position on the loop are connected by a straight line, the inclination of this straight line is k.
  • [Table 3] below shows the buckling performance evaluated based on the result of the FEM analysis based on the angle.
  • buckling strain and “improved buckling strain” are the same as in [Table 2].
  • the “end tensile strain” refers to the strain applied to the soft material in contact with the end portion of the outermost hard material (the side opposite to the central portion). The smaller this value, the better.
  • Table 3 the evaluations indicated by ⁇ , ⁇ and ⁇ are the same as those in [Table 2].
  • 1A seismic isolation device (first embodiment), 1B: seismic isolation device (second embodiment), 10: laminated structure, 11: hard material, 111: end hard material, 112: central hard material, 113 : Intermediate hard material, 111e: widthwise outer edge of terminal hard material, 112e: widthwise outer edge of central hard material, 113e: widthwise outer edge of intermediate hard material, 12: soft material, A: angle, H0: of laminated structure Vertical height, H3: Vertical height of the intermediate region, L: Virtual ridge line, ⁇ L1: Difference between the widthwise outer edge of the terminal hard material and the widthwise outer edge of the intermediate hard material, ⁇ L2: Intermediate hard material Difference between the widthwise outer edge and the widthwise outer edge of the central hard material, R1: end region, R2: central region, R3: intermediate region, W1: width between widthwise outer edges of the end hard material, W2: central hard Material Width between outer edges of the material

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  • Vehicle Body Suspensions (AREA)

Abstract

L'invention concerne un dispositif d'isolation sismique, lequel dispositif a d'excellentes performances de flambage et une excellente endurance sans perdre les performances d'isolation sismique requises. Le dispositif d'isolation sismique comporte une structure en couches (10) réalisée par l'agencement de matériaux durs (11) et de matériaux souples (12). La structure en couches (10) est divisée en des régions terminales (R1), une région centrale (R2) et des régions intermédiaires (R3). Les matériaux durs respectifs d'une région terminale (R1), de la région centrale (R2) et d'une région intermédiaire (R3) sont un matériau dur terminal (111), un matériau dur central (112) et un matériau dur intermédiaire (113). La relation de position axiale d'un bord externe dans le sens de la largeur (111e) du matériau dur terminal (111), d'un bord externe dans le sens de la largeur (113e) du matériau dur intermédiaire (113), et d'un bord externe dans le sens de la largeur (112e) du matériau dur central (112) est [bord externe dans le sens de la largeur (111e) > bord externe dans le sens de la largeur (113e) > bord externe dans le sens de la largeur (112e)], et le rapport (W1/W2) de la largeur W2 entre les bords externes dans le sens de la largeur du matériau dur central (112) à la largeur W1 entre les bords externes dans le sens de la largeur du matériau dur terminal (111) est de 0,6 ≤ (W2/W1) ≤ 0,97 ou moins.
PCT/JP2019/039527 2018-10-09 2019-10-07 Dispositif d'isolation sismique WO2020075685A1 (fr)

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CN201980066675.7A CN112823251B (zh) 2018-10-09 2019-10-07 隔震装置
JP2020551150A JP7333334B2 (ja) 2018-10-09 2019-10-07 免震装置

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JPS6429538A (en) * 1987-07-27 1989-01-31 Bridgestone Corp Earthquakeproof structure
JPS6429539A (en) * 1987-07-27 1989-01-31 Bridgestone Corp Earthquakeproof device
JPH09126272A (ja) * 1995-11-02 1997-05-13 Fujikura Ltd 免振積層ゴム
JPH11141180A (ja) * 1997-11-12 1999-05-25 Fujita Corp 積層ゴム型免震装置
JP2014047885A (ja) * 2012-09-03 2014-03-17 Oiles Ind Co Ltd 免震装置

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JP2002048190A (ja) * 2000-05-22 2002-02-15 Toyo Tire & Rubber Co Ltd 免震用積層ゴム
JP5984012B2 (ja) * 2012-12-05 2016-09-06 清水建設株式会社 積層ゴム支承
CN203384270U (zh) * 2013-07-22 2014-01-08 河南黎明重工科技股份有限公司 圆锥破碎机减振垫
CN105156530A (zh) * 2015-09-10 2015-12-16 青岛四方车辆研究所有限公司 中凹形叠层橡胶弹簧
CN108487049A (zh) * 2018-02-26 2018-09-04 北京建筑大学 一种隔震支座

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6429538A (en) * 1987-07-27 1989-01-31 Bridgestone Corp Earthquakeproof structure
JPS6429539A (en) * 1987-07-27 1989-01-31 Bridgestone Corp Earthquakeproof device
JPH09126272A (ja) * 1995-11-02 1997-05-13 Fujikura Ltd 免振積層ゴム
JPH11141180A (ja) * 1997-11-12 1999-05-25 Fujita Corp 積層ゴム型免震装置
JP2014047885A (ja) * 2012-09-03 2014-03-17 Oiles Ind Co Ltd 免震装置

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CN112823251B (zh) 2022-12-06
TWI781349B (zh) 2022-10-21
JPWO2020075685A1 (ja) 2021-09-02
JP7333334B2 (ja) 2023-08-24
TW202030426A (zh) 2020-08-16
CN112823251A (zh) 2021-05-18

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