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WO2018016402A1 - Dispositif de support parasismique - Google Patents

Dispositif de support parasismique Download PDF

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Publication number
WO2018016402A1
WO2018016402A1 PCT/JP2017/025433 JP2017025433W WO2018016402A1 WO 2018016402 A1 WO2018016402 A1 WO 2018016402A1 JP 2017025433 W JP2017025433 W JP 2017025433W WO 2018016402 A1 WO2018016402 A1 WO 2018016402A1
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WO
WIPO (PCT)
Prior art keywords
plate
vibration damping
stacking direction
load
hollow portion
Prior art date
Application number
PCT/JP2017/025433
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English (en)
Japanese (ja)
Inventor
健太 長弘
河内山　修
Original Assignee
オイレス工業株式会社
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Filing date
Publication date
Application filed by オイレス工業株式会社 filed Critical オイレス工業株式会社
Publication of WO2018016402A1 publication Critical patent/WO2018016402A1/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
    • 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

Definitions

  • the present invention is an apparatus for reducing the vibration acceleration to a structure, particularly for a seismic energy attenuation, which is arranged between two structures to absorb the energy of relative horizontal vibration between the two structures.
  • the present invention relates to a seismic isolation support device that reduces input acceleration and prevents damage to structures such as buildings and bridges.
  • Seismic support devices are known.
  • Such a seismic isolation support device supports the vertical load of the structure with the laminated body and the lead plug and also causes the horizontal vibration of the structure against one end in the laminating direction of the laminated body due to the earthquake to generate plasticity of the lead plug. While it is damped by deformation (shear deformation), the transmission of horizontal vibration at one end of the stack in the stacking direction due to an earthquake to the structure is suppressed by elastic deformation (shear deformation) of the stack. Yes.
  • lead is press-fitted and filled into the hollow portion of the laminated body to obtain a lead plug, but is press-fitted and filled to be surrounded by the inner peripheral surface of the rigid layer and the elastic layer of the laminated body.
  • the lead plug thus pressed is partially pushed back by the elasticity of the elastic layer, and this pushback generates an internal pressure in the lead plug.
  • the generated internal pressure of the lead plug is not sufficient in relation to the rigidity of the elastic layer, in the seismic isolation operation of the seismic isolation support device, there is a gap between the outer peripheral surface of the lead plug and the inner peripheral surface of the rigid layer and the elastic layer. May occur, and vibration may not be effectively damped by the lead plug.
  • Such a problem occurs remarkably in a lead plug, but is not limited to such a lead plug, and is a vibration damping body made of a damping material such as lead, tin, or a non-lead low melting point alloy that absorbs vibration energy by plastic deformation. But it can happen.
  • the present invention was made in view of the above points, and as a result of being able to constrain the vibration damping body arranged in the hollow portion of the laminated body without a predetermined gap, stable seismic isolation characteristics can be obtained,
  • a seismic isolation support device includes a laminated body having alternately laminated elastic layers and rigid layers, an upper plate and a lower plate attached to an upper end surface and a lower end surface of the laminated body, an elastic layer and a rigid layer, and A load in the laminating direction applied to the upper plate and having a vibration damping body surrounded by an upper plate and a lower plate and extending in a hollow portion extending in the laminating direction from the lower surface of the upper plate to the upper surface of the lower plate Is supported by the laminated body and the vibration damping body, and the surface pressure Pr from the vibration damping body to the upper plate based on the load in the lamination direction to be supported and the pressure receiving surface against the load of the laminated body based on the load.
  • the vibration damping body is arranged in the hollow portion so that the ratio Pr / P0 with the surface pressure P0 is 1.00 or more (ratio Pr / P0 ⁇ 1.00).
  • the seismic isolation support device also includes a laminate having elastic layers and rigid layers alternately laminated, an upper plate and a lower plate attached to the upper end surface and the lower end surface of the laminate, an elastic layer, and rigidity.
  • the hollow part that is surrounded by the layer and the upper and lower plates and extends in the stacking direction from the lower surface of the upper plate to the upper surface of the lower plate is arranged without any gap with respect to the elastic layer, the rigid layer, and the upper and lower plates.
  • the load in the stacking direction applied to the upper plate is supported by the stack and the vibration damping body, and the vibration damping body is supported by the load in the stacking direction.
  • the seismic isolation support device further includes a laminate having elastic layers and rigid layers alternately laminated, an upper plate and a lower plate attached to the upper end surface and the lower end surface of the laminate, an elastic layer, and A laminate that includes a rigid layer and a vibration damping body that is surrounded by a top plate and a bottom plate and that extends in a laminating direction from the bottom surface of the top plate to the top surface of the bottom plate and is applied to the top plate
  • the load in the direction is supported by the laminated body and vibration damping body, and the vibration in the direction perpendicular to the lamination direction of the upper plate relative to the lower plate is attenuated by plastic deformation of the vibration damping body, while orthogonal to the lamination direction of the lower plate Transmission to the upper plate in the direction of vibration is suppressed by shear elastic deformation of the laminated body, and the surface pressure Pr from the vibration damping body to the upper plate based on the load in the laminated direction to be supported and the load With the pressure P0 at the pressure-re
  • the seismic isolation support device includes a laminate having elastic layers and rigid layers alternately laminated, an upper plate and a lower plate attached to the upper end surface and the lower end surface of the laminate, an elastic layer, and
  • the hollow portion surrounded by the rigid layer and the upper and lower plates and extending in the stacking direction from the lower surface of the upper plate to the upper surface of the lower plate has no gap with respect to the elastic layer, the rigid layer, and the upper and lower plates.
  • a vibration attenuating body disposed on the upper plate and supporting the load in the laminating direction applied to the upper plate by the laminated body and the vibration attenuating body, and generating vibration in a direction perpendicular to the laminating direction of the upper plate relative to the lower plate.
  • the vibration damping body While the vibration damping body is damped by plastic deformation, the transmission to the upper plate in the direction orthogonal to the lamination direction of the lower plate is suppressed by the shear elastic deformation of the laminate, and the load in the supporting lamination direction
  • the surface pressure Pr from the vibration damping body to the upper plate based on The vibration damping body is arranged in the hollow portion so that the ratio Pr / P0 to the pressure P0 at the pressure-receiving surface with respect to the load of the laminate based on the weight is 1.00 or more (ratio Pr / P0 ⁇ 1.00). It becomes.
  • the vibration attenuator presses the inner peripheral surface of the elastic layer and partially protrudes in the direction perpendicular to the laminating direction (horizontal direction, that is, the shearing direction) on the elastic layer.
  • the vibration damping body disposed in the hollow portion is set to a predetermined value.
  • the ratio Pr / P0 between the surface pressure Pr and the surface pressure P0 is 1.00 or more (ratio Pr / P0 ⁇ 1.00), preferably 1.00. More preferably, it exceeds 1.09 (ratio Pr / P0 ⁇ 1.09), and even more preferably, 2.02 or more (ratio Pr / P0 ⁇ 2.
  • the vibration attenuator is preferably densely arranged in the hollow portion so as to be 2.50 or more (ratio Pr / P0 ⁇ 2.50), the direction perpendicular to the stacking direction
  • the vibration damping body arranged in the hollow portion can be restrained by the elastic layer, the rigid layer, the upper plate, and the lower plate without a predetermined gap, so that stable seismic isolation characteristics can be obtained.
  • fatigue and damage to the elastic layer and vibration damping body can be avoided, and durability And it is possible to provide a particularly good seismic isolation support device to a seismic isolation effect, as well as manufacturability.
  • the surface pressure Pr from the vibration damping body to the upper plate depends on the magnitude of the load from the structure, the degree of filling of the vibration damping body into the hollow portion, and the elasticity or rigidity of the elastic layer.
  • the inner circumferential surface of the laminated body that defines the hollow portion has the vibration damping body appropriately bite into the elastic layer, and the position of the elastic layer Becomes an annular concave surface, and becomes an annular convex surface at the position of the rigid layer.
  • the elastic layer and the rigid layer which define the hollow portion, the upper plate and the lower plate, and the outer peripheral surface of the vibration damping body in contact therewith are provided.
  • Unstable seismic isolation characteristics because gaps are easily generated, and therefore gaps are easily generated between the elastic and rigid layers, the upper and lower plates, and the outer peripheral surface of the vibration damping body during operation of the seismic isolation support device. Will be shown. This is presumably because the vibration attenuating body is not constrained to the laminate without any gap in at least the shearing direction (horizontal direction), and the vibration attenuating body undergoes deformation other than shear deformation.
  • the vibration damping body greatly bites into the elastic layer, and the elastic layer
  • the inner peripheral surface of the material becomes excessively concave, and the shear stress between the elastic layer and the rigid layer in the vicinity of this part becomes too large, which accelerates the deterioration of the elastic layer and deteriorates the durability of the elastic layer.
  • the vibration damping body arranged in the hollow part can be restrained by the elastic layer and the rigid layer and the upper plate and the lower plate without a predetermined gap, and stable seismic isolation characteristics can be obtained.
  • the ratio Pr / P0 that can avoid the fatigue and damage of the vibration attenuating body and can obtain a seismic isolation support device that is particularly excellent in durability, seismic isolation effect and manufacturability is the seismic isolation support device of the present invention.
  • a small vibration input can provide a high rigidity
  • a large vibration input can provide a function exhibiting a low rigidity, that is, a so-called trigger function, and can cope with a large-amplitude earthquake motion particularly favorably. Is extremely excellent.
  • the vibration damping body is preferably made of a damping material that absorbs vibration energy by plastic deformation, and the damping material is made of lead, tin, or a lead-free low melting point alloy (for example, a tin-zinc based alloy).
  • a tin-containing alloy selected from a tin-bismuth alloy and a tin-indium alloy, such as a tin-bismuth alloy containing 42-43 wt% tin and 57-58 wt% bismuth. It may be.
  • the upper plate includes an upper flange plate having an upper through hole, and an upper blocking member fixed to the upper flange plate in the upper through hole.
  • the upper end surface of the vibration damping body in the stacking direction is in contact with the lower end surface of the upper closing plate in the stacking direction without a gap, and the outer peripheral surface of the upper end portion of the vibration damping body in the stacking direction is
  • the upper flange plate defining the upper through hole is in contact with the inner peripheral surface without a gap.
  • the uppermost rigid layer in the stacking direction is open on the upper surface and in the stacking direction.
  • the first recess has a diameter larger than the diameter of the upper portion of the hollow portion and communicates with the upper portion of the hollow portion, and the upper plate has an opening at the lower surface and a diameter of the first recess.
  • An upper flange plate having a second recess facing one recess, and being fitted to the upper flange plate in the second recess, while the uppermost rigid layer in the first recess.
  • the upper outer peripheral surface of the vibration damping body in the stacking direction is in contact with the inner peripheral surface of the uppermost rigid layer that defines the upper portion of the hollow portion without any gap. is doing.
  • the lower plate includes a lower flange plate having a lower through hole, and a lower blocking member fixed to the lower flange plate in the lower through hole.
  • the lower end surface of the vibration damping body in the stacking direction is in contact with the upper end surface of the lower closing plate in the stacking direction without a gap, and the outer peripheral surface of the lower end portion of the vibration damping body in the stacking direction is ,
  • the lowermost rigid layer in the stacking direction is open on the lower surface and in the stacking direction.
  • the upper flange plate and the lower flange plate may have a circular or elliptical outer edge, or alternatively, a rectangular or rectangular outer edge.
  • examples of the material for the elastic layer include natural rubber, silicon rubber, high damping rubber, urethane rubber, chloroprene rubber, and the like, preferably natural rubber, and each layer of the elastic layer is preferably It has a thickness of about 1 mm to 30 mm in an unloaded state (a state in which the load in the supporting lamination direction is not applied to the upper plate), but is not limited to this, and the material of the rigid layer is a steel plate , A fiber reinforced synthetic resin plate such as carbon fiber, glass fiber or aramid fiber, or a fiber reinforced hard rubber plate, etc., and each layer of the rigid layer may have a thickness of about 1 mm to 6 mm, The uppermost layer and the lowermost rigid layer may have a thickness of about 10 mm to 50 mm, but are not limited thereto, and in addition, the elastic layer and the rigid layer are also particularly in their number.
  • Stable seismic isolation characteristics are obtained from the viewpoint of the load of the supporting structure, the amount of shear deformation (horizontal strain), the elastic modulus of the elastic layer, and the predicted magnitude of vibration acceleration to the structure. Accordingly, the number of elastic layers and rigid layers may be determined.
  • the elastic body and the vibration damping body are preferably an annular body and a cylindrical body, but may have other shapes, for example, an ellipse or a rectangular body and an ellipse or a rectangular body.
  • the seismic isolation support device may have a plurality of hollow portions, and a vibration damping body is arranged in each of the plurality of hollow portions, and the seismic isolation support device. May be configured.
  • the ratio Pr / P0 does not have to be the same for each of the plurality of hollow portions, and the ratio Pr / P0 may be different, and the ratio Pr / P0 for each of the plurality of hollow portions is different. As described above, it is preferably 1.00 or more, but the ratio Pr / P0 may be 1.00 or more only for a part of the plurality of hollow portions.
  • the vibration damping body arranged in the hollow portion of the laminate can be constrained without a predetermined gap, so that stable seismic isolation characteristics can be obtained, and in addition, the elastic layer and vibration damping of the laminate can be obtained. It is possible to provide a seismic isolation support device that can avoid fatigue and damage of the body and that is particularly excellent in durability, seismic isolation effect, and manufacturability.
  • FIG. 1 is a cross-sectional explanatory view taken along the line II in FIG. 2 of an example of a preferred embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional plan view of the example shown in FIG.
  • FIG. 3 is a partially enlarged cross-sectional explanatory view of the example shown in FIG.
  • FIG. 4 is an explanatory diagram of test results of hysteresis characteristics of horizontal displacement and horizontal stress in the preferred embodiment 1 of the present invention.
  • FIG. 5 is an explanatory diagram of test results of hysteresis characteristics of horizontal displacement and horizontal stress in the preferred embodiment 2 of the present invention.
  • FIG. 6 is an explanatory diagram of test results of hysteresis characteristics of horizontal displacement and horizontal stress in the preferred embodiment 3 of the present invention.
  • FIG. 7 is an explanatory diagram of test results of hysteresis characteristics of horizontal displacement and horizontal stress in the comparative example.
  • the seismic isolation support device 1 of this example shown in FIGS. 1 to 3 includes a cylindrical outer peripheral surface 4 of the elastic layer 2 and the rigid layer 3 in addition to the plurality of elastic layers 2 and the rigid layer 3 that are alternately stacked.
  • a cylindrical laminated body 7 having a cylindrical covering layer 6 covered with 5 and an annular upper end face 8 and lower end face 9 of the laminated body 7 in the laminating direction (which is also the vertical direction in this example)
  • the upper plate 10 and the lower plate 11, the elastic layer 2 and the rigid layer 3, and the upper plate 10 and the lower plate 11 are surrounded by the upper plate 10 and the lower plate 12 to the upper surface 13 of the lower plate 11 in the stacking direction V.
  • the extended hollow portion 14 is arranged without a gap with respect to the inner peripheral surface 15 of the elastic layer 2, the cylindrical inner peripheral surface 16 of the rigid layer 3, the lower surface 12 of the upper plate 10, and the upper surface 13 of the lower plate 11. And a lead plug 17 as a vibration damping body.
  • the lowermost rigid layer 3 communicates with the upper portion 25 of the hollow portion 14 and is defined by a cylindrical inner peripheral surface 27 having an opening at the lower surface 26 and having the same diameter as the inner peripheral surface 22. Open in the recess 28 and also in the lower surface 26 and in the circumferential direction R A plurality of screw holes 29 arranged at equal angular intervals, and a diameter larger than the diameter of the inner peripheral surface 16 of the lowermost rigid layer 3 that defines the lower portion 30 of the hollow portion 14 in the stacking direction V.
  • the recess 28 defined by the inner peripheral surface 27 having a communication with the lower portion 30 of the hollow portion 14 is arranged between the uppermost rigid layer 3 and the lowermost rigid layer 3 in the stacking direction V.
  • the covering layer 6 having a thickness of about 5 mm and made of the same natural rubber as the elastic layer 2 and having a cylindrical outer peripheral surface 31 and an annular upper end surface 32 and lower end surface 33 has a cylindrical inner peripheral surface. 34 is vulcanized and bonded to the outer peripheral surfaces 4 and 5.
  • the upper plate 10 has a disk-shaped upper flange plate 43 having a recess 41 on the lower surface 42 that has the same diameter as the recess 23 and faces the recess 23 in the stacking direction V, and an upper flange in the recess 41.
  • An upper shear key 45 fitted to the uppermost rigid layer 3 in the recess 23 and having a circular lower surface 44, and fitted to the plate 43.
  • the upper flange plate 43 having 46 includes a plurality of through-holes 47 arranged at equal angular intervals in the circumferential direction R corresponding to the plurality of screw holes 24 in the stacking direction V.
  • a plurality of through holes 48 arranged at equal angular intervals in the circumferential direction R in the vicinity of the outer peripheral surface 46, and inserted into each of the through holes 47 to be the highest in each of the screw holes 24.
  • the lower surface 12 of the upper plate 10 having the upper flange plate 43 and the upper shear key 45 is composed of the lower surface 42 and the lower surface 44
  • the upper end surface 8 composed of the upper surface 21 and the upper end surface 32 is the lower surface 12.
  • the lead plug 17 is in contact with the lower surface 44 of the lower surface 12 without a gap at the circular upper end surface 51, and the lead plug 17 disposed in the upper portion 25 is laminated in the stacking direction.
  • the outer peripheral surface 53 of the V upper end 52 is in contact with the inner peripheral surface 16 of the uppermost rigid layer 3 without a gap.
  • the lower plate 11 has a disc-like lower flange plate 63 having a recess 61 on the upper surface 62 having the same diameter as the recess 28 and facing the recess 28 in the stacking direction V, and a lower flange in the recess 61.
  • a lower shearing key 65 fitted to the lowermost rigid layer 3 in the recess 28 and having a circular upper surface 64, and fitted to the plate 63.
  • the lower flange plate 63 having 66 has a plurality of through-holes 67 arranged at equal angular intervals in the circumferential direction R corresponding to the plurality of screw holes 29 in the stacking direction V.
  • a plurality of through-holes 68 arranged at equal angular intervals in the circumferential direction R in the vicinity of the outer peripheral surface 66, and are inserted into the through-holes 67 to be the lowest in each of the screw holes 29.
  • Bottom through bolt 69 screwed into rigid layer 3 While it is fixed to the rigid layer 3, and is fixed via the anchor bolt inserted into the through hole 68 in the lower part of the structure to be placed.
  • the upper surface 13 of the lower plate 11 having the lower flange plate 63 and the lower shear key 65 is
  • the lower end surface 8 composed of the upper surface 62 and the upper surface 64 and the lower surface 26 composed of the lower surface 26 and the lower end surface 33 is in contact with the upper surface 62 of the upper surface 13 without a gap, and the lead plug 17
  • the outer peripheral surface 73 of the lower end portion 72 of the lead plug 17 disposed in the lower portion 30 in the stacking direction V has no clearance on the inner peripheral surface 16 of the lowermost rigid layer 3. Touching.
  • the lead plug 17 is filled with the lower surface 44, the outer peripheral surfaces 4 and 5 and the upper surface even when the load W in the stacking direction V from the upper structure to be supported is not applied to the upper plate 10 (under no load).
  • 64 with no gaps, and against the elastic force of the elastic layer 2 protrudes in the horizontal direction (shear direction) H toward the elastic layer 2 and slightly bites into the elastic layer 2.
  • the inner peripheral surface 82 of the laminate 7 composed of the inner peripheral surfaces 15 and 16 is a concave surface 81 at the position of the inner peripheral surface 15 of the elastic layer 2.
  • 3 is a convex surface 83 and supports
  • the elastic layer 2 is compressed in the stacking direction V, and the thickness t1 of the elastic layer 2 is less than 2.5 mm.
  • the lead plug 17 that is press-fitted and filled in the hollow portion 14 is moved in the horizontal direction H by the elastic layer 2 against the elastic force of the elastic layer 2.
  • the elastic layer 2 protrudes and bites into the elastic layer 2, and the inner peripheral surface 15 of the elastic layer 2 is made a concave surface 81 that is larger and recessed in the horizontal direction (shear direction) H.
  • the lead plug 17 has an upper shearing of the upper plate 10 from the lead plug 17 in a state where a load W in the stacking direction V (downward force in the stacking direction V) W from the upper structure to be supported is applied to the upper plate 10.
  • Reaction force on the key 45 upward force in the stacking direction V
  • Fr surface pressure Pr Fr / (area of the upper end surface 51 of the lead plug 17) N / m 2 , where N is Newton, the same applies hereinafter)
  • the above-described seismic isolation support device 1 is configured such that the lower flange plate 63 is connected to the lower structure via the anchor bolt inserted into the through hole 68 and the upper flange plate 43 is connected to the upper portion via the anchor bolt inserted into the through hole 48.
  • Each of the structures is fixed between the lower structure and the upper structure, receives the load W of the upper structure, and applies the load W in the stacking direction V applied to the upper plate 10 by the stacked body 7 and the lead plug 17. While supporting, the vibration of the upper plate 10 in the horizontal direction H with respect to the lower plate 11 is damped by the plastic deformation of the lead plug 17, while the transmission of the vibration of the lower plate 11 in the horizontal direction H to the upper plate 10 is laminated. 7 is suppressed by shear elastic deformation in the horizontal direction H.
  • the rigid layer 3 between the plurality of rubber plates having an annular thickness t 1 2.5 mm to be the elastic layer 2 and the uppermost and lowermost rigid layers 3.
  • a laminated body 7 is formed by disposing steel plates and fixing them together by vulcanization adhesion under pressure in a mold, etc., and then comprises a lower shear key 65 and a lower flange plate 63 via bolts 69.
  • the lower plate 11 is fixed to the lowermost rigid layer 3, and then lead is pressed into the hollow portion 14 in order to form the lead plug 17 in the hollow portion 14.
  • the lead is pressed into the hollow portion 14 with a hydraulic ram or the like so that the lead plug 17 is constrained by the laminate 7 without a gap in the hollow portion 14.
  • the upper plate 10 composed of the upper flange plate 43 and the upper shear key 45 is fixed to the uppermost rigid layer 3.
  • the rubber sheet that covers the outer peripheral surfaces 4 and 5 of the elastic layer 2 and the rigid layer 3 and becomes the covering layer 6 is formed on the outer peripheral surfaces 4 and 5.
  • the covering layer 6 bonded by vulcanization may be formed on the outer peripheral surfaces 4 and 5 of the elastic layer 2 and the rigid layer 3 simultaneously with the brazing and the vulcanization bonding. Further, in such a formation, a part of the inner peripheral side of the rubber plate that becomes the elastic layer 2 flows to cover the inner peripheral surface 16 of the rigid layer 3, and the covering is sufficiently thinner than the thickness 2 mm of the covering layer 6. A layer may be formed.
  • the ratio Pr / P0 between the surface pressure Pr and the surface pressure P0 of the manufactured seismic isolation support device 1 is 1.00 or more, in other words, the ratio Pr between the surface pressure Pr and the surface pressure P0.
  • the seismic isolation support device 1 In order to manufacture the seismic isolation support device 1 with / P0 of 1.00 or more, it corresponds to the upper flange plate 43 and the upper shear key 45 and from the upper shear key 45 fitted in the recess 41 and the recess 23.
  • a load cell pressure sensor
  • a load cell pressure sensor
  • an electrical signal of the derived lead wire is measured in a state where a load W to be supported is applied, and a surface pressure Pr is detected from the measured electrical signal, and the detected surface pressure Pr and surface pressure P0 are detected. From this, the ratio Pr / P0 is obtained, and the ratio Pr / P0 is If it is 0.000 or more, the load W on the upper plate 10 is released, the upper flange plate 43 is removed, the temporary upper shear key is replaced with the upper shear key 45, and the upper flange plate 43 is moved to the uppermost position again. When it is fixed to the upper rigid layer 3 with bolts 49 and the ratio Pr / P0 is smaller than 1.00, the load W to be supported by the seismic isolation support device 1 on the upper plate 10 is loaded.
  • the upper flange plate 43 and the temporary upper shear key are removed, and additional lead is press-fitted into the hollow portion 14.
  • the press-fitting of the additional lead into the hollow portion 14 is performed by pushing the additional lead into the upper portion of the hollow portion 14 with a hydraulic ram or the like.
  • the upper flange plate 43 and the temporary upper shear key, and the load cell (pressure sensor) between the upper flange plate 43 and the temporary upper shear key are placed on the uppermost rigid layer 3.
  • the ratio Pr / P0 is obtained from the surface pressure Pr based on the electrical signal from the load cell and the surface pressure P0.
  • the ratio Pr / P0 is equal to or greater than 1.00.
  • the upper shear key 45 and the upper flange plate 43 are fixed to the uppermost rigid layer 3 with bolts 49, while the ratio Pr / P0 is smaller than 1.00. Until the ratio Pr / P0 becomes 1.00 or more, the press-fitting of the additional lead into the hollow portion 14 is repeated.
  • the lead plug 17 disposed in the hollow portion 14 is provided without a predetermined gap.
  • the elastic layer 2 and the rigid layer 3 and the upper plate 10 and the lower plate 11 stable seismic isolation characteristics can be obtained, and in addition, fatigue and damage of the elastic layer 2 and the lead plug 17 can be avoided. In particular, excellent durability, seismic isolation effect and manufacturability can be obtained.

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Abstract

La présente invention concerne un dispositif de support parasismique (1), lequel est pourvu : d'un stratifié (7) présentant des couches élastiques (2) et des couches rigides (3) alternativement stratifiées; d'une plaque supérieure (10) et d'une plaque inférieure (11), qui sont montées sur la surface d'extrémité supérieure annulaire (8) et sur la surface d'extrémité inférieure annulaire (9) du stratifié (7), les surfaces d'extrémité supérieure et inférieure (8, 9) étant orientées dans la direction de stratification (V) du stratifié (7); et un bouchon de plomb (17) placé dans une section creuse (14) qui est entourée par les couches élastiques (2), les couches rigides (3), la plaque supérieure (10) et la plaque inférieure (11), et qui s'étend dans la direction de stratification (V) de la surface inférieure (12) de la plaque supérieure (10) jusqu'à la surface supérieure (13) de la plaque inférieure (11).
PCT/JP2017/025433 2016-07-20 2017-07-12 Dispositif de support parasismique WO2018016402A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-142870 2016-07-20
JP2016142870A JP2018013172A (ja) 2016-07-20 2016-07-20 免震支持装置

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WO2018016402A1 true WO2018016402A1 (fr) 2018-01-25

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TW (1) TW201805508A (fr)
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CN110983959B (zh) * 2019-11-21 2021-08-10 洛阳双瑞特种装备有限公司 一种隔震橡胶支座

Citations (5)

* Cited by examiner, † Cited by third party
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JP2001074096A (ja) * 1999-09-07 2001-03-23 Fujita Corp 免震用積層ゴム装置の製造方法
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