WO2016103291A1 - 免震支持装置 - Google Patents
免震支持装置 Download PDFInfo
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- WO2016103291A1 WO2016103291A1 PCT/JP2014/006375 JP2014006375W WO2016103291A1 WO 2016103291 A1 WO2016103291 A1 WO 2016103291A1 JP 2014006375 W JP2014006375 W JP 2014006375W WO 2016103291 A1 WO2016103291 A1 WO 2016103291A1
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- rotating body
- seismic isolation
- arc
- curvature
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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
- 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
- F16F15/021—Decoupling of vibrations by means of point-of-contact supports, e.g. ball bearings
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- 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
- E04H9/027—Preventive constructional measures against earthquake damage in existing buildings
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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
- 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
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- 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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0235—Anti-seismic devices with hydraulic or pneumatic damping
Definitions
- the present invention relates to an eccentric rolling pendulum type seismic isolation support device.
- a seismic isolation support device using a sliding plate or a sliding surface or a rolling seismic isolation support device using a rolling member is used.
- the sliding seismic isolation support device and the rolling seismic isolation support device have no restoring force, and after the vibration, it is necessary to manually return the furniture and the bookshelf to the original position.
- the pendulum type seismic isolation device described in Patent Document 1 has been proposed. Is formed with a gentler curvature than the curved surface of the lower surface of the rotating body, and the period of the seismic isolation device is determined by the radius of curvature of the curved surface of the lower surface.
- the present invention has been made in view of the above-mentioned points, the purpose of which can be installed as it is, such as fixtures such as display stands, building floors on which seismic isolation support objects such as bookshelves are installed,
- An object of the present invention is to provide a seismic isolation support device that can easily increase the period.
- the seismic isolation support device is fixed to one of the ground or base and the base isolation support object so as to receive the load of the base isolation support object to be supported on the ground or base.
- a support body having a cross-section arc outer surface, a cross-section arc outer face having a shape complementary to the cross-section arc outer face of the support body, and a cross-section arc outer face having a shape complementary to the cross-section arc outer face of the support body. While being slidably in contact with the outer surface of the arc of the cross section of the support, it is configured to come into contact with the outer surface of the arc of the cross section so that it can freely roll to the flat surface on the other of the ground or base and the base isolation support object.
- the section of the rotating body The center of curvature of Kototsu outer surface is positioned eccentrically to one side of one of the ground or base and seismic isolation support object in the vertical direction relative to the center of curvature of arcuate cross-sectional outer surface of the rotating body.
- the rotating body comes into contact with the convex outer surface of the cross-section arc so that it can freely roll to the flat surface of the other of the ground or the base and the base isolation support object.
- the center of curvature of the convex outer surface of the circular arc of the rotating body is eccentric to one side of the ground or the base and the base isolation support object in the vertical direction with respect to the center of curvature of the outer circular arc surface of the rotating body.
- the vibration cycle is the center of curvature of the convex outer surface of the circular arc of the rotating body in a stationary state.
- the center of curvature of the outer surface of the circular arc of the rotating body can be determined by the amount of eccentricity in the vertical direction.
- the cross-sectional arc outer surface of the support body may be a cross-section arc convex surface
- the cross-section arc outer surface of the rotating body may be a cross-section arc concave surface. It is a concave surface
- the cross-sectional arc outer surface of the rotating body may be a cross-section arc convex surface.
- the rotating body only needs to be rotatable about the center of curvature of the outer surface of the cross-section arc of the support.
- the seismic isolation support device is stationary (the seismic isolation support object to be supported is the ground or the base.
- the center is preferably located on the same vertical line.
- the entire rotating body may be made of a rigid member.
- the rotating body includes a rigid body having a cross-section arc outer surface and an elastic body fixed to the rigid body and having a cross-section arc convex outer surface.
- an elastic body having a cross-section arc outer surface and a rigid body fixed to the elastic body and having a cross-section arc convex outer surface may be provided.
- the elastic body can absorb the vertical vibration of the ground or the base, and the elastic body in the stationary state of the seismic isolation support device
- the rotating body has an elastic body having a cross-sectional arc convex outer surface, an unintended flat surface on the cross-section arc convex outer surface that comes into contact with the flat surface can be obtained.
- it is possible to perform rolling, and such an elastic body may be applied to the support so that the elastic deformation of the elastic body of the support can absorb the vibration in the vertical direction of the ground or the base. .
- the support body may be fixed to the seismic isolation support object, and in this case, the rotating body is able to freely roll on the ground surface or the flat surface of the base at the convex outer surface of the cross-section arc.
- the support may be fixed to the ground or the base, and in this case, the rotating body can freely roll on the flat surface of the seismic isolation support object at its convex arc outer surface.
- the center of curvature of the convex outer surface of the circular arc of the rotating body only needs to be located eccentrically downward in the vertical direction with respect to the center of curvature of the outer surface of the circular arc of the rotating body.
- Another seismic isolation support device is fixed to one of the ground or base and the base isolation support object so as to receive the load of the base isolation support object to be supported on the ground or base.
- a support body having a convex outer surface with a first cross-section arc, and a ground or base having a cross-section arc concave outer surface slidably contacting the first cross-section arc convex outer surface of the support body
- a rotating body that receives the load of the seismic isolation support object together with the support body, and a flat surface on the other of the seismic isolation support objects so as to freely roll on the convex outer surface of the second cross section.
- the rotating body is rotatable about the center of curvature of the concave outer surface of the cross section of the rotating body relative to the support, and the second outer surface of the rotating arc of the rotating body is a cross section of the rotating body. It has a radius of curvature larger than the radius of curvature of the concave outer surface of the arc.
- the center of curvature of the convex outer surface of the second cross-section arc of the rotating body is perpendicular to the center of curvature of the concave outer surface of the cross-section arc of the rotating body in one of the ground or base and the seismic isolation support object. It is located eccentric to the side.
- the rotating body has a circular arc convex outer surface adapted to roll freely in contact with the flat surface of the other of the ground or the base and the seismic isolation support object. And the rotating body is rotatable with respect to the support body around the center of curvature of the outer surface of the circular arc concave section of the rotating body.
- the curvature center of the convex outer surface of the second cross-section arc of the rotating body is in the vertical direction with respect to the center of curvature of the concave outer surface of the cross-section arc of the rotating body in a stationary state.
- the vibration period of the rotating body in a stationary state To be determined by the eccentricity of the vertical direction between the center of curvature of the arcuate sectional ⁇ surface between the center of curvature of the surface arc convex outer surface rotating body, may work to readily long period of.
- the first cross-section arc convex outer surface of the support body has the same radius of curvature as that of the cross-section arc concave outer surface of the rotating body,
- the center of curvature of the first cross-section arc convex outer surface of the support and the cross-section arc concave outer surface of the rotating body may be located at the same position, and in another example, the first cross-section arc convex outer surface of the support Has a radius of curvature smaller than the radius of curvature of the concave outer surface of the circular arc of the rotating body.
- the center of curvature of the first cross-section arc convex outer surface of the support and the cross-section arc concave outer surface and the second cross-section arc convex outer surface of the rotating body are on the same vertical line in the stationary state. It is good to be located.
- the rotating body may consist entirely of a rigid member, but a rigid body having a cross-section arc concave outer surface and a second cross section fixed to the rigid body.
- An elastic body having an arc convex outer surface and conversely, an elastic body having a cross-section arc concave outer surface, and a second cross-section arc convex outer surface fixed to the elastic body If the elastic body is interposed between the support body and the flat surface in this way, the elastic body can also absorb the vertical vibration of the ground or the base.
- a trigger action can be obtained by some elastic deformation of the elastic body in a stationary state, and if the rotating body has an elastic body having a convex outer surface with a second cross-section, a flat surface Sliding against an unintended flat surface on the convex outer surface of the second cross-section arc in contact with
- the rotating body can be reliably rotated and rolled, and the elastic body is applied to at least one of the main body portion and the sliding portion of the supporting body, thereby supporting the supporting body.
- the elastic deformation of the elastic body may absorb vibrations in the vertical direction of the ground or base.
- the support may be fixed to the seismic isolation support object.
- the rotating body has a ground surface or a base with a second cross-section arc convex outer surface.
- the center of curvature of the convex outer surface of the second cross-sectional arc of the rotator is offset upward in the vertical direction with respect to the center of curvature of the concave outer surface of the cross-section arc of the rotator.
- the support body may be fixed to the ground or the base instead, as long as the support body is positioned at the center.
- the rotating body is a convex outer surface of the second cross-section arc.
- the center of curvature of the outer surface of the second circular arc of the rotating body is perpendicular to the center of curvature of the outer surface of the concave arc of the rotating body. What is necessary is just to be eccentrically located below.
- the seismic isolation support object to be supported includes furniture such as a display stand such as a store, a book shelf such as an office, a library or a general house, office equipment, a factory machine and a machine bed. , Hospital examinations, diagnostic equipment, small warehouses, etc., but the present invention is not limited to these, and the base is a foundation floor built in the ground, a store, an office, a library, etc. Or the floor of structures, such as a general house, a hospital, a warehouse, etc. can be mentioned, but this invention is not limited to these.
- the cross-section arc outer surface of the support and the cross-section arc outer surface of the rotating body, or the first cross-section arc convex outer surface of the rotating body and the cross-section arc concave outer surface of the rotating body, which become the sliding surface, are triggered by a trigger function (sliding occurs at vibration acceleration below a certain level. If the vibration acceleration of a certain level or more does not require a function that causes the sliding) and a vibration damping function (a function that dissipates vibration as heat and dissipates vibration energy that causes sliding), On the other hand, it is preferable to have a surface with an extremely small friction coefficient. When a trigger function and a vibration damping function are obtained, it is preferable to have a surface having a moderate friction coefficient.
- Having a trigger function can avoid unnecessary and sensitive relative vibrations of the base-isolated support object by applying a small vibration acceleration of the ground or base and applying a small vibration acceleration to the base-isolated support object. If it has a vibration damping function, the base-isolated support object that once vibrates relative to the ground or the base can be quickly returned to a stationary state.
- the convex outer surface of the circular arc of the rotating body that serves as the rolling surface is moderate in order not to slip easily against the ground or the base or the flat surface of the base-isolated support object in a horizontal earthquake vibration. It preferably has a magnitude coefficient of friction.
- the cross-sectional arc outer surface of the support body and the cross-section arc outer surface and cross-section arc convex outer surface of the rotating body or the first cross-section arc convex outer surface of the support body and the cross-section arc concave outer surface and the second cross-section arc convex outer surface of the rotating body are: It may consist of a part of a cylindrical surface or a part of a spherical surface. If it consists of a part of a cylindrical surface, the seismic isolation effect can be given directionality. If it consists of a part of, the seismic isolation effect can be exhibited against vibrations in all directions on the horizontal plane.
- Any elastic body may be made of natural rubber, synthetic rubber, or a synthetic resin material having elasticity.
- the elastic body is bonded to a rigid body by vulcanization adhesion. Although it may be fixed, it may be fixed to a rigid body using other adhesives.
- the seismic isolation support device rotates in the rotation of the rotating body around the center of curvature of the outer surface of the circular arc of the support or in the rotation of the center of curvature of the concave outer surface of the circular arc of the rotating body relative to the support. It may further comprise a detachment prevention mechanism that prevents the rotation of the rotating body from the support body by prohibiting rotation beyond a certain level due to a body collision, and the detachment prevention mechanism is attached to the support body. And an enclosure surrounding the rotating body. In this case, the surrounding body is rotated at a certain rotation of the rotating body around the center of curvature of the outer surface of the cross-section arc of the supporting body or with respect to the supporting body.
- the rotating body may have an inner surface with which the rotating body comes into contact in a rotation of a certain level or more around the center of curvature of the concave outer surface of the circular arc of the rotating body.
- the rotating body is prohibited from rotating beyond a certain level to prevent the rotating body from being detached from the support body. As a result, it is possible to prevent the seismic isolation support object from falling, and to minimize damage caused by the earthquake.
- a seismic isolation support device that can be used as it is by installing a floor such as a display stand, a building floor on which a seismic isolation support target such as a book shelf is installed, and can easily increase the period. Can be offered.
- FIG. 1 is a side view illustrating an example of a preferred embodiment according to the present invention.
- FIG. 2 is an operation explanatory diagram of the example shown in FIG.
- FIG. 3 is a side view of another example of a preferred embodiment according to the present invention.
- FIG. 4 is a side view of still another example of a preferred embodiment according to the present invention.
- FIG. 5 is an operation explanatory diagram of the example shown in FIG.
- FIG. 6 is a side view of another example of a preferred embodiment according to the present invention.
- FIG. 7 is an operation explanatory diagram of the example shown in FIG.
- FIG. 8 is a side view illustrating still another example of the preferred embodiment according to the present invention.
- FIG. 9 is a side view illustrating still another example of the preferred embodiment according to the present invention.
- FIG. 10 is a side view illustrating still another example of a preferred embodiment according to the present invention.
- FIG. 11 is an operation explanatory diagram of the example shown in FIG.
- the seismic isolation support device 1 of this example is a load in the vertical direction V of a fixture 3 such as a store display stand that is a base isolation support object to be supported on the floor 2 of the store which is the ground or base.
- a fixture 3 such as a store display stand that is a base isolation support object to be supported on the floor 2 of the store which is the ground or base.
- it has a cross-section arc convex outer surface 7 having a center O1 which is a center of curvature, and is fixed to the lower portion of the outer box 4 of the fixture 3 through a fixture 6 by a screw 5 or the like.
- the support 8 has a cross-sectional arc concave outer surface 9 which is complementary to the cross-sectional arc convex outer surface 7 of the support 8 and has a center of curvature at the same position as the center O1.
- a circular arc convex outer surface 11 having a center O2 which is a center of curvature and a flat surface 10 of the floor 2 is slidable in the R direction around the center O1 and rotatably contacted with the convex outer surface 7 of the circular arc.
- Centering on the center O2 is rotatable in the R direction, that is, the center O2 is And it comprises a rotating body 12 receives a load in the vertical direction V of furniture 3 through the support 8 together are adapted to freely rolling contact with the heart with the support 8.
- the support 8 has a cylindrical main body 23 having a screw portion 21 at the upper portion and a constricted portion 22 at the lower portion, and a partial circular sphere portion 24 provided integrally with the constricted portion 22 of the main body 23.
- the nut portion 25 screwed into the screw portion 21 is fixed to the fixture 6 at the screw portion 21 so that the position thereof can be adjusted in the vertical direction V, and the cross-section arc convex outer surface 7 is a partial circle as a part of a spherical surface. It consists of a partially spherical convex surface 26 of the sphere portion 24.
- the rotating body 12 includes a cross-section arc concave outer surface 9 formed of a partial spherical concave surface 31 as a part of a spherical surface, and a cross-section arc convex outer surface 11 formed of a partial spherical convex surface 32 as a part of a spherical surface.
- a frustoconical outer surface including a frustoconical outer surface or a frustoquad pyramid outer surface connected to the arcuate convex outer surface 11 on the cross section, and on the other hand, an outer surface of the truncated polygonal pyramid, etc.
- the center O2 that is freely rotatable in the R direction around a certain center O1 and that is the center of curvature of the cross-section arc convex outer surface 11 of the rotating body 12 is in a stationary state (state shown in FIG. 1) of the seismic isolation support device 1.
- the center O1 which is the center of curvature of the concave outer surface 9 of the circular arc of the rotating body 12
- the center O1 which is the center of curvature of the cross-section arc convex outer surface 7 of the support 8 and the cross section of the rotating body 12.
- the center O2 which is the center of curvature of the arc convex outer surface 11 is located on the same vertical line 35 in the stationary state of the seismic isolation support device 1, and the cross-section arc convex outer surface 11 of the rotating body 12 is seismically isolated.
- the cross-section arc convex outer surface 11 has a radius of curvature r2 that is larger than the distance d between the position P where the flat surface 10 of the floor 2 contacts the center O1, and thus the eccentricity.
- the core amount ⁇ is r2-d.
- Each of the above-mentioned seismic isolation support devices 1 arranged in the lower part of the outer box 4 of the fixture 3 has a stationary state shown in FIG. 1 when the horizontal vibration H caused by the earthquake is not applied to the floor 2.
- the load of the fixture 3 is shared on the floor 2 to support the fixture 3, and when the horizontal vibration H due to the earthquake is applied to the floor 2, the rotating body 12 of each seismic isolation support device 1.
- the seismic isolation support device 1 rotates in the R direction around the center O 1 with respect to the partial spherical portion 24.
- the period T of the pendulum motion of the rotator 12 is expressed by the equation (1).
- ⁇ is small, ⁇ / sin ⁇ 1.
- the period T is expressed by the equation (2) and is a cross-sectional arc.
- g is a gravitational acceleration
- the rotating body 12 is configured to come into contact with the flat surface 10 of the floor 2 so as to roll and rotate freely at the cross-section arc convex outer surface 11, and in the stationary state, the cross-section arc convex outer surface 11.
- the center O2 which is the center of curvature, is eccentric with respect to the center O1, which is the center of curvature of the concave arcuate outer surface 9 in the vertical direction V by the amount of eccentricity ⁇ .
- the flat surface 10 of the floor 2 is used as it is.
- the period T of the pendulum motion of the rotating body 12 can be determined by the eccentricity ⁇ which is the difference between the distance d and the radius of curvature r2 of the convex outer surface 11 of the cross-section arc.
- the cross-section arc convex outer surface 7 is composed of a partial spherical convex surface 26
- the cross-section arc convex outer surface 9 is composed of a partial spherical concave surface 31
- the cross-section arc convex outer surface 11 is formed from the partial spherical convex surface 32. That is, each is a spherical surface Therefore, the fixture 3 can be isolated from the vibrations in all directions with respect to the horizontal direction H.
- the mounting position of the support 8 on the fixture 6 by the screw portion 21 and the nut 25 is provided. Therefore, the fixture 3 can be seismically isolated at an arbitrary position in the vertical direction V.
- the rotating body 12 is formed as an integral body from a rigid body, but instead, for example, as shown in FIG. A rigid body 42 having an outer surface 9, a frustoconical outer surface 33 and a partial spherical convex surface 41, and a natural rubber which is fixed to the partial spherical convex surface 41 of the rigid body 42 by vulcanization and has a cross-sectional arc convex outer surface 11. If the rotating body 12 is provided with the elastic body 43 as a covering layer for the rigid body 42 as described above, it is possible to prevent earthquakes in all directions with respect to the horizontal direction H.
- the elastic body 43 can also support the isolation of the fixture 3 against the vibration caused by the earthquake in the vertical direction V applied to the floor 2 due to the elastic deformation of the elastic body 43. It can also protect the goods, and in addition, it can be So that it is possible to obtain a trigger action in flattening of the cross-sectional arc convex outer surface 11 due to the recess of the partial by partial elastic deformation of the portion of the elastic body 43 for receiving a load of direction V.
- the seismic isolation support device 1 shown in FIG. 1 and FIG. 3 there is a possibility that the rotating body 12 may be detached from the supporting body 8 in the earthquake vibration with the large rotation angle ⁇ of the rotating body 12, but as shown in FIG. 4. Furthermore, the seismic isolation support device 1 rotates more than a certain amount due to the collision of the rotating body 12 in the R direction rotation of the rotating body 12 around the center O1 that is the center of curvature of the convex outer surface 7 of the cross section of the support 8. And a detachment prevention mechanism 51 for preventing the rotator 12 from being detached from the support 8.
- the detachment prevention mechanism 51 is attached to the support 8 and surrounds the rotator 12.
- the surrounding body 52 is provided.
- the surrounding body 52 is sandwiched between the fixture 6 and the nut 25 and fixed to the screw portion 21 of the support body 8, and the rotating body 12 is integrated with the outer peripheral edge of the ceiling portion 55 at the upper end.
- a cylindrical portion 56 that surrounds the lower portion of the cylindrical portion 56, projecting outward in the horizontal direction H from the lower end of the cylindrical portion 56, and contacting the flat surface 10 of the floor 2 at the annular lower surface 57.
- the annular outer flange 58 and the annular outer flange 58 are integrally formed with the cylindrical portion 56 at the upper portion thereof, projecting inward in the horizontal direction H from the cylindrical inner surface 59 of the cylindrical portion 56, and the rotating body 12 can rotate.
- an annular inner flange 62 having a cylindrical inner peripheral surface 61 defining an opening 60.
- the above rotation is prohibited, and therefore, in the rotation of the rotating body 12 around the center O1 that is the center of curvature of the cross-section arc convex outer surface 7 of the support 8, the rotating body
- the surrounding body 52 having the lower surface 63 of the ceiling portion 55, which is the inner surface that the 12 contacts, prevents the rotator 12 from being detached from the partial spherical portion 24 of the support 8.
- the seismic isolation support device 1 provided with the separation preventing mechanism 51, even if the rotating body 12 is largely rotated by an unintended large horizontal H vibration, the rotating body 12 is prohibited from rotating beyond a certain level. As a result of preventing the detachment of the rotating body 12 from 8, the fall of the fixture 3 can be prevented, and damage caused by the earthquake can be minimized.
- the seismic isolation support device 1 includes the annular outer flange portion 58 that is in contact with the flat surface 10 at the annular lower surface 57 in the stationary state of the seismic isolation support device 1.
- the inside 65 of the enclosure 52 in a stationary state can be sealed with respect to the outside, dust can be prevented from entering the inside 65, and malfunction of the seismic isolation support device 1 due to dust can be avoided.
- an elastic plate similar to the elastic body 43 on the annular lower surface 57 by sticking or the like, or by providing a gap about the thickness of the elastic body 43 between the annular lower surface 57 and the flat surface 10.
- the support 8 is fixed to the outer box 4 of the fixture 3, and the rotating body 12 is brought into rolling contact with the flat surface 10 of the floor 2 with its circular arc convex outer surface 11.
- the support 8 may be fixed to the floor 2 with the screw portion 21, and the cross-section arc convex outer surface 11 of the rotating body 12 may be rotatably contacted with the flat surface 71 which is the lower surface of the outer box 4 of the fixture 3.
- the combination of the support body 8 and the rotating body 12 may be reversed upside down, and in such a seismic isolation support device that is upside down, the center of curvature of the cross-section arc convex outer surface 11 of the rotating body 12 is obtained.
- the center O2 is deviated from the center O1, which is the center of curvature of the cross-section arc concave outer surface 9 of the rotator 12, with a decentering amount ⁇ below the floor 2 in the vertical direction V when the seismic isolation support device is stationary. It is good to be positioned in the center.
- a fixture 5 is attached to the lower portion of the outer box 4 of the fixture 3 by a screw 5 or the like so as to receive a load in the vertical direction V of the fixture 3 to be supported on the floor 2.
- a support body 8a having a cross-section arc convex outer surface 7a having a center O1 which is the center of curvature, and a shape complementary to the cross-section arc convex outer face 7a of the support body 8a.
- the circular arc concave outer surface 9a having the center of curvature at the same position as the center O1, and the cross-sectional arc concave outer surface 9a is slidable in the R direction around the center O1 on the circular arc convex outer surface 7a and is rotatable.
- the flat surface 10 of the floor 2 is in contact with the flat arc surface 11a having the center of curvature O2 in a circular arc convex outer surface 11a so as to be rotatable in the R direction around the center O2, that is, freely rolling around the center O2.
- the support 8a is a circular arc having a cylindrical main body 23a having a screw portion 21a at the upper part and a partially spherical convex surface 26a formed integrally with the lower part of the main body 23a and part of a spherical surface.
- the main body 23a has a convex outer surface 7a and includes a sliding portion 27a disposed between the main body 23a and the rotating body 12a.
- the main body 23a is positioned with respect to the vertical direction V by a nut 25 screwed into the screw portion 21a.
- the screw portion 21a is adjustably fixed to the fixture 6 and is fixed to the lower portion of the outer casing 4 of the fixture 3 via the fixture 6.
- the sliding portion 27a is formed of the main body 23a.
- the disk part 22a formed integrally in the lower part of this part and the partial sphere part 24a which was formed integrally in the disk part 22a and had the partial sphere convex surface 26a were comprised.
- the rotating body 12a includes a cross-section arc concave outer surface 9a composed of a partial spherical concave surface 31a as a part of a spherical surface, and a cross-section arc convex outer surface 11a composed of a partial spherical convex surface 32a as a part of a spherical surface. And an annular end face 33 connected to the cross-sectional arc convex outer surface 11a at the inner peripheral edge and connected to the cross-sectional arc convex outer surface 11a at the outer peripheral edge, and a rotating body with respect to the cross-section arc convex outer surface 7a of the support 8a.
- the circular arc concave outer surface 9a of 12a is slidably rotatable in the R direction around the center O1 which is also the center of curvature of the circular arc concave outer surface 9a.
- the convex outer surface 11a of the circular arc is larger than the radius of curvature r1 of the concave outer surface 9a of the circular arc of the rotating body 12a.
- the center O2 which has a large radius of curvature r2 and is the center of curvature of the cross-section arc convex outer surface 11a of the rotator 12a is a cross section of the rotator 12a in the stationary state of the seismic isolation support device 1a (the state shown in FIG.
- the center O1 which is the center of curvature of the convex outer surface 7a and the cross-section arc concave outer surface 9a of the rotating body 12a and the center O2 which is the center of curvature of the cross-section arc convex outer surface 11a of the rotating body 12a are in the stationary state of the seismic isolation support device 1a.
- the cross-section arc convex outer surface 7a of the support 8a has the same radius of curvature r1 as that of the cross-section arc concave outer surface 9a of the rotating body 12a.
- the center O1 which is the center of curvature of the cross-section arc convex outer surface 7a of the support 8a and the cross-section arc concave outer surface 9a of the rotating body 12a, is located at the same position.
- Each of the above-described seismic isolation support devices 1a arranged at the bottom of the outer box 4 of the fixture 3 has a stationary state as shown in FIG. 6 when the horizontal vibration H is not applied to the floor 2 due to the earthquake.
- the load of the fixture 3 is shared on the floor 2 to support the fixture 3, and when a horizontal vibration H is applied to the floor 2 due to an earthquake, the rotating body 12a of each seismic isolation support device 1a 7 is centered with respect to the partial circular sphere portion 24a at the cross-section arc convex outer surface 11a on the flat surface 10 of the floor 2 with the sliding of the cross-section arc concave outer surface 9a with respect to the cross-section arc convex outer surface 7a as shown in FIG.
- the seismic isolation supporting device 1a prevents the horizontal H vibration applied to the floor 2 from being transmitted to the fixture 3, thus causing the fixture 3 to move.
- Cross section due to eccentricity ⁇ between center O1 and center O2 while supporting seismic isolation Due to the difference between the radius of curvature r2 of the arc convex outer surface 11a and the radius of curvature r1 of the cross-section arc concave outer surface 9a, the rotating body 12a is adapted to lift the fixture 3 in the vertical direction V along with the rotation in the R direction.
- the period T of the pendulum motion of the rotating body 12a is expressed by the equation (1).
- ⁇ is small, ⁇ / sin ⁇ 1
- the period T is expressed by the equation (2).
- the rotating body 12a has the cross-section arc convex outer surface 11a adapted to roll and rotate in contact with the flat surface 10 of the floor 2, and in the stationary state, the cross-section arc convex outer surface 11a.
- the center O2 which is the center of curvature, is eccentric with respect to the center O1, which is the center of curvature of the concave arcuate outer surface 9a, by the amount of eccentricity ⁇ above the vertical direction V.
- the flat surface 10 of the floor 2 is used as it is.
- the period T of the pendulum motion of the rotating body 12a can be determined by the eccentricity ⁇ , which is the difference between the radius of curvature r1 of the cross-section arc concave outer surface 9a and the radius of curvature r2 of the cross-section arc convex outer surface 11a.
- ⁇ is the difference between the radius of curvature r1 of the cross-section arc concave outer surface 9a and the radius of curvature r2 of the cross-section arc convex outer surface 11a.
- ⁇ is the difference between the radius of curvature r1 of the cross-section arc concave outer surface 9a and the radius of curvature r2 of the cross-section arc convex outer surface 11a.
- ⁇ is the difference between the radius of curvature r1 of the cross-section arc concave outer surface 9a and the radius of curvature r2 of the cross-section arc convex outer surface 11a.
- the fixture 3 can be isolated from the vibrations of the omnidirectional earthquake with respect to the horizontal direction H. Since the attachment position of the support 8a to the fixture 6 can be adjusted by the portion 21a and the nut 25, the fixture 3 can be seismically isolated at an arbitrary position in the vertical direction V.
- the rotating body 12a is formed as an integral body from a rigid body, but instead, for example, as shown in FIG. A rigid body 42a having a partial spherical concave surface 31a, an annular end surface 33a and a partial circular convex surface 41a formed of the outer surface 9a, and a cross-sectional arc convex fixed to the partial spherical convex surface 41a of the rigid body 42a by vulcanization adhesion
- the elastic body 43a made of natural rubber having a partially spherical convex surface 32a made of the outer surface 11a may be provided.
- the rotating body 12a includes the elastic body 43a as a covering layer for the rigid body 42a.
- the fixture 3 can be isolated and supported against earthquake vibrations in all directions with respect to the horizontal direction H, and also due to elastic deformation of the elastic body 43a against vibrations caused by an earthquake in the vertical direction V applied to the floor 2. ⁇ 3 is seismically isolated and can protect the fixture 3 itself and the articles in the fixture 3, and in addition, the portion of the elastic body 43 a that receives the load in the vertical direction V in a stationary state is partially recessed due to elastic deformation.
- the triggering action can be obtained by flattening the cross-section arc convex outer surface 11a caused by the above.
- the cross-sectional arc convex outer surface 7a of the support 8a has the center O1 at the same position as the center O1 of the cross-sectional arc concave outer surface 9a of the rotating body 12a, and although the radius of curvature r1 is the same as the radius of curvature r1 of the circular arc concave outer surface 9a of the rotating body 12a, instead of this, for example, as shown in FIG.
- the device 1a supports the rotation of the rotating body 12a in the R direction around the center O1, which is the center of curvature of the circular arc concave outer surface 9a with respect to the support 8a, by preventing the rotation of the rotating body 12a from exceeding a certain amount.
- the above-described detachment preventing mechanism 51 for preventing the rotator 12a from being detached from the body 8a may be further provided.
- the surrounding body 52 surrounds the rotating body 12a, and the cylindrical portion 56 is provided. Encloses the rotating body 12a from the periphery, and the rotating body 12a can be rotated by the opening 60.
- a large rotation angle of the rotating body 12a around the center O1 that is the center of curvature of the cross-section arc convex outer surface 7a of the support 8a In the rotation of the rotating body 12a in the R direction more than a certain level due to the vibration of the horizontal H earthquake with ⁇ , the rotating body 12a collides with and comes into contact with the lower surface 63 of the ceiling portion 55, and further rotation in the R direction occurs.
- the rotating body 12a comes into contact with the rotating body 12a when the rotating body 12a rotates about a center O1 that is the center of curvature of the cross-section arc convex outer surface 7a of the supporting body 8a.
- the surrounding body 52 having the lower surface 63 of the ceiling portion 55 which is the inner surface prevents the rotator 12a from being detached from the sliding portion 27a of the support 8a in the same manner as described above.
- the seismic isolation support device 1a provided with the separation preventing mechanism 51, as described above, even if the rotating body 12a is to be rotated greatly by an unintended large horizontal H vibration, the rotating body 12a is rotated more than a certain amount. As a result of prohibition and prevention of detachment of the rotating body 12a from the support body 8a, it is possible to prevent the fixture 3 from falling down and to minimize damage caused by an earthquake.
- the separation preventing mechanism 51 with respect to the seismic isolation support device 1a also includes the annular outer flange 58 that contacts the flat surface 10 with the annular lower surface 57 in the stationary state of the seismic isolation support device 1a.
- the inside 65 of the surrounding body 52 in the stationary state can be sealed from the outside, dust can be prevented from entering the inside 65, and malfunction of the seismic isolation support device 1a due to dust can be avoided.
- an elastic plate may be provided on the annular lower surface 57, or a gap may be provided between the annular lower surface 57 and the flat surface 10.
- the support 8a is fixed to the outer box 4 of the fixture 3, and the cross-section arc convex outer surface 11a of the rotating body 12a is brought into rolling contact with the flat surface 10 of the floor 2,
- the support body 8 a is fixed to the floor 2 with the screw portion 21 a, and the cross-section arc convex outer surface 11 a of the rotating body 12 a is placed on the flat surface 71 that is the lower surface of the outer box 4 of the fixture 3.
- the combination of the support body 8a and the rotating body 12a may be turned upside down.
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Abstract
Description
2 床
3 什器
4 外函
5 螺子
6 取付具
7、7a、11、11a 断面円弧凸外面
8、8a 支持体
9、9a 断面円弧凹外面
10 平坦面
12、12a 回転体
O1、O2 中心
d 距離
r1 曲率半径
r2 曲率半径
Claims (28)
- 地盤又は基台上で支持すべき免震支持対象物の荷重を受けるべく、当該地盤又は基台及び免震支持対象物のうちの一方に固定されるようになっていると共に断面円弧外面を有した支持体と、この支持体の断面円弧外面に相補的な形状の断面円弧外面を有すると共に当該支持体の断面円弧外面に相補的な形状の断面円弧外面で支持体の断面円弧外面に摺動自在に接触する一方、地盤又は基台及び免震支持対象物のうちの他方における平坦面に転がり自在に断面円弧凸外面で接触するようになっていると共に支持体と共に免震支持対象物の荷重を受ける回転体とを具備しており、回転体の断面円弧凸外面は、回転体の断面円弧外面の曲率半径よりも大きな曲率半径を有しており、静止状態において、回転体の断面円弧凸外面の曲率中心は、回転体の断面円弧外面の曲率中心に対して鉛直方向において地盤又は基台及び免震支持対象物のうちの一方の側に偏芯して位置している免震支持装置。
- 支持体の断面円弧外面は、断面円弧凸面であり、回転体の断面円弧外面は、断面円弧凹面である請求項1に記載の免震支持装置。
- 支持体の断面円弧外面は、断面円弧凹面であり、回転体の断面円弧外面は、断面円弧凸面である請求項1に記載の免震支持装置。
- 支持体の断面円弧外面並びに回転体の断面円弧外面及び断面円弧凸外面は、円筒面の一部からなる請求項1から3のいずれか一項に記載の免震支持装置。
- 支持体の断面円弧外面並びに回転体の断面円弧外面及び断面円弧凸外面は、円球面の一部からなる請求項1から3のいずれか一項に記載の免震支持装置。
- 回転体は、支持体に対して、支持体の断面円弧外面の曲率中心を中心として、回転自在である請求項1から5のいずれか一項に記載の免震支持装置。
- 静止状態において、支持体の断面円弧外面の曲率中心と回転体の断面円弧凸外面の曲率中心とは、同一の鉛直線上に位置している請求項6に記載の免震支持装置。
- 回転体は、断面円弧外面を有した剛体と、この剛体に固着されていると共に断面円弧凸外面を有した弾性体とを具備している請求項1から7のいずれか一項に記載の免震支持装置。
- 回転体は、断面円弧外面を有した弾性体と、この弾性体に固着されていると共に断面円弧凸外面を有した剛体とを具備している請求項1から7のいずれか一項に記載の免震支持装置。
- 支持体は、免震支持対象物に固定されるようになっており、回転体は、その断面円弧凸外面で地盤又は基台の平坦面に転がり自在に接触するようになっており、回転体の断面円弧凸外面の曲率中心は、回転体の断面円弧外面の曲率中心に対して鉛直方向の上方に偏芯して位置している請求項1から9のいずれか一項に記載の免震支持装置。
- 支持体は、地盤又は基台に固定されるようになっており、回転体は、その断面円弧凸外面で免震支持対象物の平坦面に転がり自在に接触するようになっており、回転体の断面円弧凸外面の曲率中心は、回転体の断面円弧外面の曲率中心に対して鉛直方向の下方に偏芯して位置している請求項1から9のいずれか一項に記載の免震支持装置。
- 支持体の断面円弧外面の曲率中心を中心とした回転体の回転において当該回転体の衝突でその一定以上の回転を禁止して支持体からの回転体の離脱を防止する離脱防止機構を更に具備している請求項1から11のいずれか一項に記載の免震支持装置。
- 離脱防止機構は、支持体に取付けられていると共に回転体を囲繞している囲繞体を具備しており、囲繞体は、支持体の断面円弧外面の曲率中心を中心とした回転体の一定以上の回転において、当該回転体が接触する内面を有している請求項12に記載の免震支持装置。
- 地盤又は基台上で支持すべき免震支持対象物の荷重を受けるべく、当該地盤又は基台及び免震支持対象物のうちの一方に固定されるようになっていると共に第一の断面円弧凸外面を有した支持体と、この支持体の第一の断面円弧凸外面に摺動自在に接触する断面円弧凹外面を有する一方、地盤又は基台及び免震支持対象物のうちの他方における平坦面に第二の断面円弧凸外面で転がり自在に接触するようになっていると共に、支持体と共に免震支持対象物の荷重を受ける回転体とを具備しており、回転体は、支持体に対して、回転体の断面円弧凹外面の曲率中心を中心として回転自在であり、回転体の第二の断面円弧凸外面は、当該回転体の断面円弧凹外面の曲率半径よりも大きな曲率半径を有しており、静止状態において、回転体の第二の断面円弧凸外面の曲率中心は、回転体の断面円弧凹外面の曲率中心に対して鉛直方向において地盤又は基台及び免震支持対象物のうちの一方の側に偏芯して位置している免震支持装置。
- 支持体の第一の断面円弧凸外面及び回転体の断面円弧凹外面は、円筒面の一部からなる請求項14に記載の免震支持装置。
- 支持体の第一の断面円弧凸外面及び回転体の断面円弧凹外面は、円球面の一部からなる請求項14に記載の免震支持装置。
- 支持体は、地盤又は基台及び免震支持対象物のうちの一方に固定されるようになっている本体部と、この本体部に一体的に形成されていると共に前記第一の断面円弧凸外面を有して、本体部及び回転体間に配された摺動部とを具備している請求項14から16のいずれか一項に記載の免震支持装置。
- 支持体の第一の断面円弧凸外面は、回転体の断面円弧凹外面の曲率半径と同一の曲率半径を有している請求項14から17のいずれか一項に記載の免震支持装置。
- 支持体の第一の断面円弧凸外面と回転体の断面円弧凹外面との曲率中心は、同一の位置に位置している請求項18に記載の免震支持装置。
- 支持体の第一の断面円弧凸外面は、回転体の断面円弧凹外面の曲率半径よりも小さな曲率半径を有している請求項14から17のいずれか一項に記載の免震支持装置。
- 静止状態において、回転体の断面円弧凹外面及び第二の断面円弧凸外面の曲率中心は、同一の鉛直線上に位置している請求項14から20のいずれか一項に記載の免震支持装置。
- 静止状態において、支持体の第一の断面円弧凸外面並びに回転体の断面円弧凹外面及び第二の断面円弧凸外面の曲率中心は、同一の鉛直線上に位置している請求項14から21のいずれか一項に記載の免震支持装置。
- 回転体は、断面円弧凹外面を有した剛体と、この剛体に固着されていると共に第二の断面円弧凸外面を有した弾性体とを具備している請求項14から22のいずれか一項に記載の免震支持装置。
- 回転体は、断面円弧凹外面を有した弾性体と、この弾性体に固着されていると共に第二の断面円弧凸外面を有した剛体とを具備している請求項14から23のいずれか一項に記載の免震支持装置。
- 支持体は、免震支持対象物に固定されるようになっており、回転体は、第二の断面円弧凸外面で地盤又は基台の平坦面に転がり自在に接触するようになっており、回転体の第二の断面円弧凸外面の曲率中心は、回転体の断面円弧凹外面の曲率中心に対して鉛直方向の上方に偏芯して位置している請求項14から24のいずれか一項に記載の免震支持装置。
- 支持体は、地盤又は基台に固定されるようになっており、回転体は、第二の断面円弧凸外面で免震支持対象物の平坦面に回転自在に接触するようになっており、回転体の第二の断面円弧凸外面の曲率中心は、回転体の断面円弧凹外面の曲率中心に対して鉛直方向の下方に偏芯して位置している請求項14から25のいずれか一項に記載の免震支持装置。
- 支持体に対する回転体の断面円弧凹外面の曲率中心を中心とした回転において当該回転体の衝突でその一定以上の回転を禁止して支持体からの回転体の離脱を防止する離脱防止機構を更に具備している請求項14から26のいずれか一項に記載の免震支持装置。
- 離脱防止機構は、支持体に取付けられていると共に回転体を囲繞している囲繞体を具備しており、囲繞体は、支持体に対する回転体の断面円弧凹外面の曲率中心を中心とした一定以上の回転において、当該回転体が接触する内面を有している請求項27に記載の免震支持装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/006375 WO2016103291A1 (ja) | 2014-12-22 | 2014-12-22 | 免震支持装置 |
EP14908902.1A EP3239557A4 (en) | 2014-12-22 | 2014-12-22 | Seismic isolation support device |
US15/538,093 US20170342734A1 (en) | 2014-12-22 | 2014-12-22 | Base isolation supporting device |
CN201480084275.6A CN107110280A (zh) | 2014-12-22 | 2014-12-22 | 免震支撑装置 |
JP2016565591A JPWO2016103291A1 (ja) | 2014-12-22 | 2014-12-22 | 免震支持装置 |
KR1020177016167A KR20170100504A (ko) | 2014-12-22 | 2014-12-22 | 면진 지지 장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2014/006375 WO2016103291A1 (ja) | 2014-12-22 | 2014-12-22 | 免震支持装置 |
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WO2016103291A1 true WO2016103291A1 (ja) | 2016-06-30 |
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PCT/JP2014/006375 WO2016103291A1 (ja) | 2014-12-22 | 2014-12-22 | 免震支持装置 |
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US (1) | US20170342734A1 (ja) |
EP (1) | EP3239557A4 (ja) |
JP (1) | JPWO2016103291A1 (ja) |
KR (1) | KR20170100504A (ja) |
CN (1) | CN107110280A (ja) |
WO (1) | WO2016103291A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107338882A (zh) * | 2017-07-28 | 2017-11-10 | 华侨大学 | 一种局部可侧滑的摇晃结构 |
Families Citing this family (3)
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CN108221874B (zh) * | 2017-12-25 | 2020-10-16 | 洛阳水利勘测设计有限责任公司 | 一种利用惯性补偿系统抗震的大型渡槽及施工方法 |
US11078890B2 (en) * | 2018-05-22 | 2021-08-03 | Engiso Aps | Oscillating damper for damping tower harmonics |
US11421435B2 (en) | 2018-12-12 | 2022-08-23 | Universidad Catolica De La Santisima Concepcion | Kinematic seismic isolation device |
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2014
- 2014-12-22 KR KR1020177016167A patent/KR20170100504A/ko not_active Application Discontinuation
- 2014-12-22 EP EP14908902.1A patent/EP3239557A4/en not_active Withdrawn
- 2014-12-22 WO PCT/JP2014/006375 patent/WO2016103291A1/ja active Application Filing
- 2014-12-22 US US15/538,093 patent/US20170342734A1/en not_active Abandoned
- 2014-12-22 JP JP2016565591A patent/JPWO2016103291A1/ja active Pending
- 2014-12-22 CN CN201480084275.6A patent/CN107110280A/zh active Pending
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Publication number | Priority date | Publication date | Assignee | Title |
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CN107338882A (zh) * | 2017-07-28 | 2017-11-10 | 华侨大学 | 一种局部可侧滑的摇晃结构 |
CN107338882B (zh) * | 2017-07-28 | 2023-05-26 | 华侨大学 | 一种局部可侧滑的摇晃结构 |
Also Published As
Publication number | Publication date |
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JPWO2016103291A1 (ja) | 2017-11-02 |
US20170342734A1 (en) | 2017-11-30 |
EP3239557A1 (en) | 2017-11-01 |
EP3239557A4 (en) | 2018-08-01 |
KR20170100504A (ko) | 2017-09-04 |
CN107110280A (zh) | 2017-08-29 |
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