JP2015007461A - Seismic base isolation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seismic base isolation device in which the load of a superstructure is moved to the seismic base isolation device at the time of an earthquake by separating the weight support mechanism and seismic base isolation mechanism of the superstructure, and which has high reliability, is manufactured at low cost and is easily managed with natural restoration.SOLUTION: In a seismic base isolation device in which a seismic base isolation mechanism and a weight support mechanism are separated, to an arc-shaped curve surface existing in a contact surface part between a substructure and a construction superstructure in which a separable vertical load support part is provided, a rolling body consisting of a ball or roller is held; load movement to the curve surface is performed by rolling of the rolling body with horizontal load; and thereby the structure parts of the rolling body and the curve surface are a vertical load support body.

Description

The present invention relates to a vibration isolation device that separates a vertical load support mechanism and a vibration isolation mechanism of a structure such as a building or a bridge and moves a vertical load of an upper structure to the vibration isolation mechanism during an earthquake.

A vibration isolator of a construction method using laminated rubber, a ball, a bolt or the like is known from Patent Document 1, Patent Document 2, Patent Document 3, and the like.

In these vibration isolators, laminated rubber, balls, bolts, and the like are interposed between the substructure and the superstructure, and the vibration isolator is a weight support for a vertical load.

In these vibration isolators, the load is always concentrated on the laminated rubber, sphere, bolt, etc. of the constituent members, and the load is concentrated on a limited range of members of the vibration isolator and the upper and lower structures, There is a problem that the fatigue of the member has advanced and the repair time has to be advanced, and there is a problem that the wind sways.

JP 2012-52665 A (Representative drawing) JP 2010-270581 A (Representative drawing) JP 2006-112164 A (Representative drawing)

Yoshiaki Akiba and 86 other authors Mechanical Engineering Handbook Basics α3 Material Society of Mechanical Engineers Japan Society of Mechanical Engineers President Shinobu Saito Published November 25, 2007 21-29

In the proposed vibration isolator, a vertical load is always applied to the vibration isolator such as laminated rubber, balls, bolts, etc., so the material fatigue of the limited range of the vibration isolator and the upper and lower parts working on it has progressed, and the members It has become clear that there is a problem of swaying in the wind, as well as unavoidable time for replacement.

Accordingly, the problem to be solved by the present invention is to provide a vibration isolator that can be naturally restored with a highly reliable structure that does not require a restoration device and that is inexpensive and easy to manage.

The above-mentioned problem has an arcuate curved surface on the parallel planes of the upper and lower part works on the contact part that supports the gravity of the upper structure that allows separation between the building upper structure and the lower structure, A rolling element consisting of a ball or a roller is clamped in an unloaded state, and the rolling element becomes a heavy support by the rolling of the rolling element by the relative movement of the upper and lower parts, causing the upper and lower parts to separate, and the vibration isolation mechanism Is solved by a vibration isolator which becomes a weight support.

In the vibration isolator of the present invention, normally, no load is applied to the vibration isolation mechanism, and the load is moved to the vibration isolation mechanism via the rolling element during an earthquake, so that the weight support is highly reliable and maintained. It is possible to provide a vibration isolator that is easy to manage, inexpensive, and naturally recovers.

In this method, the upper load is applied to the contact surface of the upper and lower work, there is no material fatigue of the vibration-isolating member and the member concentrated on the limited area of the upper and lower work, the replacement time and repair time of the member Can be extended, and there is no shaking caused by the wind.

The rolling element has a small rolling frictional resistance, and the rolling exhibits a vibration isolation effect against horizontal vibration.

Regardless of the position of the rolling element that has been rolled by the horizontal load, a force that always rolls toward the apex of the curved surface works, and a restoring device is unnecessary.

Therefore, it can be used not only in the city but also in mountainous areas and remote areas that are difficult to manage.

Further, by increasing or decreasing the number and area of the curved surface that holds the rolling elements, the shared load of the rolling elements can be adjusted, and it can be widely used as a vibration isolator from light buildings to heavy buildings.

This vibration isolation device can be used alone as a building vibration isolation device, and can also be used in conjunction with existing vibration isolation devices. Since the normal load is not applied to the vibration isolation device, material fatigue of the vibration isolation member can be reduced. .

The horizontal vibration in all directions can be attenuated by using a sphere as the rolling element of this device.

A roller is used as the rolling element of this device, and the frictional resistance force in the roller long axis direction can be used.

The roller referred to here is a rolling element having a coaxial axis in the long axis direction, and even if the wheel shape or the rolling part of different radii has a distorted shape, the rotation angle of the rolling element and the axis of the rolling element produced by the rolling are different. A general term for objects that roll without causing a difference in rotation angle.

A-1 is a cross-sectional view showing a rolling element and an upper and lower part work held between the rolling elements with no load. A-2 is a cross-sectional view showing the rolling element and the upper and lower part work held in a state where a load is applied to the rolling element. B-1 is a cross section showing a state in which the rolling element is held in an unloaded state and the rolling induction member is in the rolling element. B-2 is a cross-sectional view showing a state in which a rolling induction member is present in the rolling element and is held in a state where a load is applied. C-1 is a cross-sectional view showing a state in which a rolling induction member is present in the upper and lower part work and no load is applied. C-2 is a cross-sectional view showing a state in which a rolling induction member is present in the upper and lower part work and a load is applied. It is a cross-sectional view showing the relative movement of the upper and lower works where the A curved surface is provided on the lower work side and the upper and lower structures are separated by rolling of the rolling elements and the rolling elements become the weight support. B is a cross-sectional view showing that the curved surface is provided on the lower work side, the rolling element is held with no load, the upper structure load is placed on the lower structure, and the contact surface of the upper and lower work works as a weight support. . A curved surface is provided on the lower work side, and rolling of the rolling element with the rolling induction material applied to the rolling element causes the upper and lower structures to separate and the rolling element to become a weight support. It is a cross-sectional view shown. Cross-sectional view showing that the contact surface on the protrusion is a weight support for the rolling element in an unloaded state in which the rolling element provided with a B-curved surface on the lower work side is applied to the rolling element and the upper structure load It is. It is a cross-sectional view showing separation and relative movement of the upper and lower work by rolling the rolling element, with the A curved surface provided on the upper and lower work side and the rolling induction material provided on the upper and lower work curved surface. B is a cross-sectional view showing that the curved surface is provided in the upper and lower part work, the rolling induction material is provided in the upper and lower part work, the rolling element is held in a no-load state, and the protrusion of the upper work is supporting the weight. is there. It is sectional drawing which used this vibration isolator for the building. It is a cross-sectional view using a plurality of rolling elements of the vibration isolator in the lower part of the existing vibration isolator of the rubber steel plate laminate. It is a top view of this vibration isolator which uses a plurality of balls for the existing vibration isolator lower part of A rubber steel plate laminate. It is a top view of this vibration isolator which uses a some roller for the existing vibration isolator lower part of B rubber steel plate laminated body. It is a cross-sectional view using one rolling element of this vibration isolator at the lower part of the existing vibration isolator of the rubber steel plate laminate. It is a top view of this vibration isolator which uses one ball | bowl for the existing vibration isolator lower part of A rubber steel plate laminated body. It is a top view of this vibration isolator which uses one roller for the existing vibration isolator lower part of B rubber steel plate laminated body. It is a top view of this vibration isolator which uses the roller orthogonal to the existing vibration isolator lower part of C rubber steel plate laminated body. It is sectional drawing of the vibration isolator which equipped the jack for height adjustment to the vibration isolation unit which uses a some rolling element for A vibration isolator. It is sectional drawing of the vibration isolator which equipped the jack for height adjustment to the vibration isolation unit which uses one rolling element for B vibration isolation device. It is sectional drawing of the vibration isolator of the vertical vibration attenuation | damping which utilizes a bending phenomenon for a vibration isolator. It is a figure of patent document 1. FIG. It is a figure of patent document 2. FIG. It is a figure of patent document 3. FIG.

Hereinafter, the implementation method of this invention is demonstrated in detail using drawing.

1A, B-1, and C-1 show the rolling element 6 and the upper and lower constructions 1 and 2 in which the rolling element 6 of the vibration isolator of the present invention is held in a state of no load P = 0. B-1 and C-1 are cross-sectional views showing the rolling induction materials 7-1, 7-2, and 7-3.

1A-2, B-2, and C-2 show the rolling element 6 and the upper and lower constructions 1 and 2 that are held in a state where a load P is applied to the rolling element 6 of the vibration isolator of the present invention. , B-2, and C-2 are cross-sectional views showing deformation of the rolling induction members 7-1, 7-2, and 7-3 due to the load P.

In FIG. 1B-1 and B-2, the rolling element rolls with the radius R + residual thickness H1 of the rolling element 6 with the effective radius of the rolling element with rolling ability.

FIG. 2B shows the present invention in which there is a separable contact surface 3 that supports the load of the superstructure 1, a curved surface 4 is provided on the lower surface, and a rolling element 6 is sandwiched between the upper and lower structures 1, 2. In the vibration isolator, when the rolling element 6 is on the curved surface vertex and the load P = 0, the rolling element 6 shown in FIG. 2A rolls M1 from the curved surface vertex to the edge, and the load P is applied. FIGS. 1 and 2 are cross-sectional views showing a state in which a load moves to the vibration isolator when M2 is separated.

The rolling element 6 rolls on the dome curved surface 4 due to the horizontal load, and the load of the upper structure 1 is moved and applied to the vibration isolator while changing the distance between the upper and lower structures 1, 2. Since 2 moves relatively, the horizontal vibration is attenuated and transmitted to the facing flat body.

FIG. 3 shows that the weight support portion of the upper structure 1 is provided with a protruding contact surface 3-1, and the rolling element 6 is provided with a rolling guide 7-1 so that the initial relative movement and rolling can be performed quickly. FIG. 3A shows a vibration isolation device in which P = 0 and FIG. 3-B shows a state where a load of P is applied to the rolling elements.

FIG. 4 shows a vibration isolator in which the weight support portion of the upper structure 1 is provided with a protruding contact surface 3-1, and the upper and lower structures are curved. It is a vibration isolator that works in the same way as a vibration isolator.

(Application 1)
FIG. 5 shows the use of the vibration isolator between the upper and lower works 1 and 2 of the building.

FIG. 11 shows a vibration isolating method in which a vertical beam is damped by using a bending phenomenon, and a simple beam 13 is provided on the upper structure 1 to build a column 14.

The space H3 under the beam secures a space that can cope with the maximum deflection amount according to Non-Patent Document 1.

(Application example 2)
FIG. 6 shows a structure in which a plurality of rolling elements of the vibration isolator is used in the lower part of the rubber steel plate laminate vibration isolator 8.

FIG. 7A is a plan view using a plurality of spherical rolling elements in the vibration isolator.

FIG. 7B is a plan view of the vibration isolator using a plurality of roller rolling elements.

(Application 3)
FIG. 8 shows a case where a single rolling element is used for the vibration isolator at the bottom of the rubber steel plate laminate vibration isolator 8, and the force to cause the upper structure to tilt by each vibration isolator is shown. It is a cross section of a vibration isolator used to work, but to keep the structure level by a number of vibration isolator.

FIG. 9A is a plan view in which one sphere is used for the vibration isolator.

FIG. 9B is a plan view using one roller for the vibration isolator.

FIG. C is a plan view showing the arrangement of rollers using a roller orthogonal to the vibration isolator and utilizing the damping of horizontal vibration due to the rolling of the roller and the frictional resistance force in the roller long axis direction.

(Application 4)
FIG. 10 shows a unitization of the vibration isolator, which includes a jack for height adjustment. FIG. 10A shows a plurality of rolling elements, and FIG. 10B shows a single rolling element. Device.

By installing the jack, the vibration isolator can be easily installed, and management at a later date is easy.

The present invention relates to a vibration isolator that separates a weight support mechanism and a vibration isolation mechanism of an upper structure, and can attenuate the vibration of a structure against a vibration such as an earthquake.

DESCRIPTION OF SYMBOLS 1 Superstructure 2 Substructure 3 Upper / lower construction contact surface 3-1 Protruding upper / lower construction contact surface 3-2 Columnar upper / lower construction contact surface 4 Curved surface 5 Cavity 6 Rolling body 7-1 Rolling derivative 7-2 of rolling element Rolling derivative of superstructure curved surface 7-3 Rolling derivative of substructure curved surface 8 Rubber steel plate laminated body vibration isolator 9 Rolling derivative 10 Rolling rolling element 11 Isolation unit 12 Height adjusting jack 13 Simple beam 14 Column R Rolling body radius H1 Rolling derivative residual thickness H2 Rolling derivative no-load thickness H3 Space under beam P at maximum deflection Load on rolling element M1 Rolling width of sphere Relative moving width M2 of upper and lower work Vertical relative movement width

The present invention relates to a vibration isolation device that separates a vertical load support mechanism and a vibration isolation mechanism of a structure such as a building or a bridge and moves a vertical load of an upper structure to the vibration isolation mechanism during an earthquake.

A vibration isolator of a construction method using laminated rubber, a ball, a bolt or the like is known from Patent Document 1, Patent Document 2, Patent Document 3, and the like.

In these vibration isolators, laminated rubber, balls, bolts, and the like are interposed between the substructure and the superstructure, and the vibration isolator is a weight support for a vertical load.

In these vibration isolators, the load is always concentrated on the laminated rubber, sphere, bolt, etc. of the constituent members, and the load is concentrated on a limited range of members of the vibration isolator and the upper and lower structures, There is a problem that the fatigue of the member has advanced and the repair time has to be advanced, and there is a problem that the wind sways.

JP 2012-52665 A (Representative drawing) JP 2010-270581 A (Representative drawing) JP 2006-112164 A (Representative drawing)

Yoshiaki Akiba and 86 other authors Mechanical Engineering Handbook Basics α3 Material Society of Mechanical Engineers Japan Society of Mechanical Engineers President Chairman Shinobu Saito Published November 25, 2007 21-29

In the proposed vibration isolator, a vertical load is always applied to the vibration isolator such as laminated rubber, balls, bolts, etc., so the material fatigue of the limited range of the vibration isolator and the upper and lower parts working on it has progressed, and the members It has become clear that there is a problem of swaying in the wind, as well as unavoidable time for replacement.

Accordingly, the problem to be solved by the present invention is to provide a vibration isolator that can be naturally restored with a highly reliable structure that does not require a restoration device and that is inexpensive and easy to manage.

The above-mentioned problem has an arcuate curved surface on the parallel planes of the upper and lower part works on the contact part that supports the gravity of the upper structure that allows separation between the building upper structure and the lower structure, A rolling element consisting of a sphere or a roller is held in an unloaded state, and the rolling element becomes a weight support by the rolling of the rolling element by the relative movement of the upper and lower works, causing the upper and lower works to separate, and the weight support Is solved by a vibration isolator which is a vibration isolation mechanism .

In the vibration isolator of the present invention, the load is not applied to the vibration isolation mechanism at normal times, and the reliability of the load moving to the vibration isolation mechanism via the rolling element during an earthquake is high, maintenance is easy, and the cost is low. Thus, it is possible to provide a vibration isolator that restores nature.

In this method, the upper load is applied to the contact surface of the upper and lower work, there is no material fatigue of the vibration-isolating member and the member concentrated on the limited area of the upper and lower work, the replacement time and repair time of the member Can be extended, and there is no shaking caused by the wind.

The rolling element has a small rolling frictional resistance, and the rolling exhibits a vibration isolation effect against horizontal vibration.

Regardless of the position of the rolling element that has been rolled by the horizontal load, a force that always rolls toward the apex of the curved surface works, and a restoring device is unnecessary.

Therefore, it can be used not only in the city but also in mountainous areas and remote areas that are difficult to manage.

Further, by increasing or decreasing the number and area of the curved surface that holds the rolling elements, the shared load of the rolling elements can be adjusted, and it can be widely used as a vibration isolator from light buildings to heavy buildings.

This vibration isolation device can be used alone as a building vibration isolation device, and can also be used in conjunction with existing vibration isolation devices. Since the normal load is not applied to the vibration isolation device, material fatigue of the vibration isolation member can be reduced. .

The horizontal vibration in all directions can be attenuated by using a sphere as the rolling element of this device.

A roller is used as the rolling element of this device, and the frictional resistance force in the roller long axis direction can be used.

The roller referred to here is a rolling element having a coaxial axis in the long axis direction, and even if the wheel shape or the rolling part of different radii has a distorted shape, the rotation angle of the rolling element and the axis of the rolling element produced by the rolling are different. A general term for objects that roll without causing a difference in rotation angle.

A-1 is a cross-sectional view showing a rolling element and an upper and lower part work held between the rolling elements with no load. A-2 is a cross-sectional view showing the rolling element and the upper and lower part work held in a state where a load is applied to the rolling element. B-1 is a cross-sectional view showing a state in which the rolling element is held in an unloaded state and the rolling guide member is in the rolling element. B-2 is a cross-sectional view showing a state in which a rolling induction member is present in the rolling element and is held in a state where a load is applied. C-1 is a cross-sectional view showing a state in which a rolling induction member is present in the upper and lower part work and no load is applied. C-2 is a cross-sectional view showing a state in which a rolling induction member is present in the upper and lower part work and a load is applied. A is a cross-sectional view showing the relative movement of the upper and lower works in which a curved surface is provided on the lower work side, and the upper and lower structures are separated by rolling of the rolling elements and the rolling elements become the weight support. B is a cross-sectional view showing that the curved surface is provided on the lower work side, the rolling element is held with no load, the upper structure load is applied to the lower structure, and the contact surface of the upper and lower work works as a weight support. is there. A is a relative movement of the upper and lower works, where the curved body is provided on the lower work side, and the rolling structure is separated from the upper and lower structures by the rolling action of the rolling elements provided with the rolling induction material. FIG. Cross section B is shown that the rolling element and superstructure projecting contact surface a load of no load subjected to the rolling element rolling induction material having a curved surface on the lower engineering side is a weight bearing member FIG. A is a cross-sectional view showing the separation and relative movement of the upper and lower work by rolling the rolling element, with the curved surface provided on the upper and lower work side and the rolling induction material provided on the curved surface of the upper and lower work. B is a cross-sectional view showing that the curved surface is provided in the upper and lower work, the rolling induction material is provided in the upper and lower work, holding the rolling element in a no-load state, and the protrusion of the upper work is supporting the weight. It is. It is sectional drawing which used this vibration isolator for the building. It is a cross-sectional view using a plurality of rolling elements of the vibration isolator in the lower part of the existing vibration isolator of the rubber steel plate laminate. A is a top view of this vibration isolator using a plurality of balls in the lower part of the existing vibration isolator of the rubber steel plate laminate. B is a plan view of the present vibration isolator using a plurality of rollers at the bottom of the existing vibration isolator of the rubber steel sheet laminate. It is a cross-sectional view using one rolling element of this vibration isolator at the lower part of the existing vibration isolator of the rubber steel plate laminate. A is a top view of this vibration isolator using one ball at the bottom of the existing vibration isolator of the rubber steel sheet laminate. B is a plan view of the vibration isolator using one roller at the bottom of the existing vibration isolator of the rubber steel sheet laminate. C is a plan view of the vibration isolator using a roller orthogonal to the lower part of the existing vibration isolator of the rubber steel sheet laminate. A is a cross-sectional view of a jack unit for height adjustment that uses a plurality of rolling elements in the vibration isolator. B is a cross-sectional view of a height adjusting jack unit that uses one rolling element in the vibration isolator. It is sectional drawing of the vibration isolator of the vertical vibration attenuation | damping which utilizes a bending phenomenon for a vibration isolator. It is a figure of patent document 1. FIG. It is a figure of patent document 2. FIG. It is a figure of patent document 3. FIG.

Hereinafter, the implementation method of this invention is demonstrated in detail using drawing.

1A, B-1, and C-1 show the rolling element 6 and the upper and lower constructions 1 and 2 in which the rolling element 6 of the vibration isolator of the present invention is held in a state of no load P = 0. B-1 and C-1 are cross-sectional views showing the rolling induction materials 7-1, 7-2, and 7-3.

1A-2, B-2, and C-2 show the rolling element 6 and the upper and lower constructions 1 and 2 that are held in a state where a load P is applied to the rolling element 6 of the vibration isolator of the present invention. , B-2, and C-2 are cross-sectional views showing deformation of the rolling induction members 7-1, 7-2, and 7-3 due to the load P.

In FIG. 1B-1 and B-2, the rolling element rolls with the radius R + residual thickness H1 of the rolling element 6 with the effective radius of the rolling element with rolling ability.

FIG. 2B shows the present invention in which there is a separable contact surface 3 that supports the load of the superstructure 1, a curved surface 4 is provided on the lower surface, and a rolling element 6 is sandwiched between the upper and lower structures 1, 2. In the vibration isolator, when the rolling element 6 is on the curved surface vertex and the load P = 0, the rolling element 6 shown in FIG. 2A rolls M1 from the curved surface vertex to the edge, and the load P is applied. It is a cross-sectional view showing a state in which 1 and 2 are separated from M2 and a load moves to the vibration isolator.

The rolling element 6 rolls on the curved surface 4 due to the horizontal load, and the load of the upper structure 1 is moved and applied to the vibration isolator while changing the interval between the upper and lower structures 1 and 2. Since they move relative to each other, the horizontal vibration is attenuated and transmitted to the facing flat body.

FIG. 3 shows that the weight support portion of the upper structure 1 is provided with a protruding contact surface 3-1, and the rolling element 6 is provided with a rolling guide 7-1 so that the initial relative movement and rolling can be performed quickly. FIG. 3B shows a vibration isolator which shows P = 0, and FIG. 3-A shows a state where a load of P is applied to the rolling elements.

FIG. 4 shows a vibration isolator in which the weight support portion of the upper structure 1 is provided with a protruding contact surface 3-1, and the upper and lower structures are curved. It is a vibration isolator that works in the same way as a vibration isolator.

(Application 1)
FIG. 5 shows the use of the vibration isolator between the upper and lower works 1 and 2 of the building.

FIG. 11 shows a vibration isolating method in which a vertical beam is damped by using a bending phenomenon, and a simple beam 13 is provided on the upper structure 1 to build a column 14.

The space H3 under the beam secures a space that can cope with the maximum deflection amount according to Non-Patent Document 1.

(Application example 2)
FIG. 6 shows a structure in which a plurality of rolling elements of the vibration isolator is used in the lower part of the rubber steel plate laminate vibration isolator 8.

FIG. 7A is a plan view using a plurality of spherical rolling elements in the vibration isolator.

FIG. 7B is a plan view of the vibration isolator using a plurality of roller rolling elements.

(Application 3)
FIG. 8 shows a case where a single rolling element is used for the vibration isolator at the bottom of the rubber steel plate laminated vibration isolator 8, and each of the vibration isolator has a force to cause the upper structure to tilt. It is a cross-sectional view of a vibration isolator that works but keeps the structure horizontal by a plurality of vibration isolator.

FIG. 9A is a plan view in which one sphere is used for the vibration isolator.

FIG. 9B is a plan view using one roller for the vibration isolator.

FIG. C is a plan view showing the arrangement of rollers using a roller orthogonal to the vibration isolator and utilizing the damping of horizontal vibration due to the rolling of the roller and the frictional resistance force in the roller long axis direction.

(Application 4)
FIG. 10 is a cross-sectional view of the height adjusting jack unit of the vibration isolator, FIG. 10A is for a plurality of rolling elements , and FIG. 10B is an apparatus for one rolling element .

By installing the jack, the vibration isolator can be easily installed, and management at a later date is easy.

The present invention relates to a vibration isolator that separates a weight support mechanism and a vibration isolation mechanism of an upper structure, and can attenuate the vibration of a structure against a vibration such as an earthquake.

DESCRIPTION OF SYMBOLS 1 Superstructure 2 Substructure 3 Upper / lower construction contact surface 3-1 Protruding upper / lower construction contact surface 3-2 Columnar upper / lower construction contact surface 4 Curved surface 5 Cavity 6 Rolling body 7-1 Rolling derivative 7-2 of rolling element Rolling derivative of superstructure curved surface 7-3 Rolling derivative of substructure curved surface 8 Rubber steel plate laminate vibration isolator 9 Rolling derivative 10 Rolling rolling element 11 Jack unit 12 Jack for height adjustment 13 Simple beam 14 Column R Rolling Rolling body radius H1 Rolling derivative residual thickness H2 Rolling derivative no-load thickness H3 Space under beam P at maximum deflection Load applied to rolling element M1 Rolling width Relative movement of upper and lower work M2 Vertical relative movement of upper and lower work amount

Claims (3)

A seismic isolation device having separable vertical load support portions on the contact surfaces of the upper structure of the structure and the lower structure, and holding a rolling element composed of a ball or a roller on the arcuate curved surface of the contact surface of the upper and lower structures. The rolling element is a vibration isolation device in which the vertical load is moved to the curved surface by the relative movement of the upper and lower structures, and the vibration isolation mechanism and the weight support mechanism are separated. 2. The vibration isolator according to claim 1, wherein there is a support contact surface in which a vertical load support surface between the upper structure and the lower structure has a protruding column shape. The rolling element according to claim 1 that rolls by the relative movement of the upper and lower structures rolls on the surface of the rolling element or on the curved surface of the upper and lower structures so as to roll via the rolling guide member. The vibration isolator according to claim 1 and 2 which is a dynamic derivative.

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