JP7441593B2 - Seismic isolation device - Google Patents

Description

The present invention relates to a seismic isolation device that has a backup structure that assists the axial force retention function or horizontal deformation function in the event of damage, or a structure that allows damage to be estimated.

Seismic isolation devices are sometimes used to support buildings.
Seismic isolation devices are installed under the pillars of buildings and constantly support long-term loads.
A linear motion rolling seismic isolation device is a seismic isolation device that uses rolling balls.
A linear motion rolling seismic isolation device is a seismic isolation device that is used to adjust the seismic isolation period and does not have a restoring or damping function.
When an earthquake occurs, linear motion rolling seismic isolation devices use rolling balls to allow buildings to move horizontally, protecting the building or the property inside the building.

For example, a linear motion rolling seismic isolation device is provided with a pair of linear guides that intersect with each other and are composed of a linear rail having a linear groove and a linear block that can move along the linear groove via balls. When an earthquake occurs, the linear block moves along the linear axis, causing rolling friction.
For example, a pair of linear guides are provided so as to cross each other in one of a cross shape, a square shape, and a square shape when viewed from above.
Linear rolling seismic isolation devices can be combined with other types of seismic isolation and damping devices to provide the desired vibration suppression function for the building as a whole.

A linear motion rolling seismic isolation device that uses mechanical elements activated by rolling balls and has parts that move linearly, places a large load on the balls and the grooves that guide them when they move linearly.
The ball and the groove that guides the ball are designed on the premise that a vertical load within the rated load will be applied.

Since linear motion rolling seismic isolation devices do not have a restoring function, they are used in conjunction with seismic isolation devices that have restoring and damping functions, such as lead-filled laminated rubber seismic isolation devices.
Generally, the vertical rigidity of a linear motion rolling seismic isolation device is higher than that of a lead-filled laminated rubber seismic isolation device.
Therefore, due to the effects of creep on the lead-containing laminated rubber seismic isolation device, a vertical load that exceeds expectations may act on the linear motion rolling seismic isolation device.
In recent years, earthquakes that exceed expectations have occurred. For example, an unexpected acceleration may be applied to a building.
Furthermore, the foundations that support buildings may sink unexpectedly due to earthquakes.

If such a situation occurs, it is predicted that unexpected damage will occur to the linear motion rolling seismic isolation device.
In conventional emergency inspections, the health of the equipment is determined by visual inspection of the equipment's appearance and the relationship between the amount of vertical displacement and the load.
The measurement point for measuring vertical displacement is the height of the seismic isolation layer or the height of the equipment.
If the amount of shrinkage in vertical displacement is determined to be dangerous based on statistical data, the building may be jacked up, and the vertical load actually applied to the equipment due to the jack-up load may be estimated to ensure the soundness of the equipment. determine gender.
Additionally, in experiments and the like, the vertical and horizontal loads supported by the device are measured, and damage is determined if an abnormal increase in the load or an abnormal metallic sound occurs.
When damage is determined, the device is dismantled and the internal structure is checked to determine whether there is any damage.

If a seismic isolation device using a linear guide is subjected to a vertical load greater than expected, the end plate of the linear guide may become trapped and the balls inside may fly out. In addition, vertical shrinkage may occur in the device, causing deformation of surrounding beam members, which may cause damage to buildings.
In this way, the device temporarily maintains the holding force of the vertical axis force. However, if an earthquake occurs while there is vertical contraction, the device may try to move horizontally, potentially causing further damage to the building.

The amount of reduction in vertical displacement used in conventional inspections is on the order of several millimeters, and the amount of vertical displacement required for judgment is even smaller. However, it is difficult to properly determine the presence or absence of damage.
It takes a lot of effort and time to jack up a building and measure the actual vertical load.

Considering the above points, there is a method to reliably grasp the amount of contraction in vertical displacement without actually jacking up and measuring the vertical load, or measuring the height of the seismic isolation layer or the height of the equipment with a displacement meter. was required. There was also a demand to back up the vertical load retention function of the seismic isolation device even if the device were to shrink in the vertical direction due to some kind of damage. Furthermore, there was a need to assist in horizontal displacement without causing damage to buildings even when balls or the like were damaged.

Japanese Patent Application Publication No. 08-296642 JP2018-091447 JP2019-132728

In order to solve the above situation, the inventor devised a structure or damage that can back up the axial force retention function or horizontal deformation function in a seismic isolation device that has a linearly moving part using a mechanical element that is activated by the rolling of a ball. We will try to provide a structure that allows you to do so.

In order to achieve the above objective, a seismic isolation device that is installed between the upper and lower structures, which are a pair of upper and lower structures, and supports the building, is installed so that the virtual X-axis and the virtual Y-axis are in a horizontal plane. an upper flange plate that is perpendicular to each other and is a base plate structure that supports the upper structure; an upper linear rail that is a rail structure that supports the upper flange plate and extends in the axial direction of the X-axis; and a plurality of balls on the upper linear rail. and an upper linear block having a block structure that is fitted in such a manner that movement in the vertical direction and in the axial direction of the Y-axis is restricted from below through the block structure, and is guided so as to be relatively movable in the axial direction of the X-axis. an upper linear guide that is a structure, a lower flange plate that is a base plate structure that is supported by a lower foundation structure, a lower linear rail that is a rail structure that is supported by the lower flange plate and extends in the axial direction of the Y axis, and the lower part. The lower linear is a block structure that is fitted into the linear rail from above through a plurality of balls so that movement in the vertical direction and the axial direction of the X-axis is restricted, and is guided so as to be relatively movable in the axial direction of the Y-axis. a lower linear guide which is a linear motion structure having a block; a rubber shim which is an intermediate plate structure having a plate-like outline provided between the upper linear block and the lower linear block; the upper linear guide and the lower part; A linear block that is a block structure of the linear guide is installed along a linear rail that is a rail structure of at least one of the linear guides, and is provided corresponding to a linear guide that is a linear motion structure of at least one of the linear guides. an axial force retention function backup structure that is a structure supported by a flange plate that is a base plate structure that supports the linear rail, and in an installed state, the surface of the linear block facing the flange plate and the It is designed so that it can come into contact with the axial force retention function backup structure.

In the configuration of the present invention described above, the virtual X-axis and the virtual Y-axis are perpendicular to each other in the horizontal plane. , the upper flange plate is a base plate structure that supports the upper structure. The upper linear guide includes an upper linear rail having a rail structure that supports the upper flange plate and extends in the axial direction of the X-axis, and a plurality of balls on the upper linear rail from below in the up-down direction and in the axial direction of the Y-axis. It is a linear motion structure having an upper linear block which is a block structure that is fitted so that movement is restricted and is guided so as to be relatively movable in the axial direction of the X-axis. The lower flange plate is a base plate structure supported by the lower foundation structure. The lower linear guide includes a lower linear rail having a rail structure supported by the lower flange plate and extending in the axial direction of the Y-axis, and a plurality of balls connected to the lower linear rail from above in the vertical direction and in the axial direction of the X-axis. It is a linear motion structure having a lower linear block which is a block structure that is fitted so that movement is restricted and is guided so as to be relatively movable in the axial direction of the Y-axis. The rubber shim is an intermediate plate structure provided between the upper linear block and the lower linear block and having a plate-like outline.
The axial force retention function backup structure is provided corresponding to a linear guide that is a linear motion structure of at least one of the upper linear guide and the lower linear guide, and is provided along a linear rail that is a rail structure of the linear guide. This structure is supported by a flange plate, which is a base plate structure, that supports the linear rail at a certain position of a linear block, which is a block structure of the linear guide, at least in an installed state. In the installed state, the surface of the linear block facing the flange plate can come into contact with the axial force retention function backup structure.
As a result, even if an unexpected load is applied, the axial force retention function can be assisted.

In order to achieve the above objective, a seismic isolation device that is installed between the upper and lower structures, which are a pair of upper and lower structures, and supports the building, is installed so that the virtual X-axis and the virtual Y-axis are in a horizontal plane. an upper flange plate that is perpendicular to each other and is a base plate structure that supports the upper structure; an upper linear rail that is a rail structure that supports the upper flange plate and extends in the axial direction of the X-axis; and a plurality of balls on the upper linear rail. and an upper linear block having a block structure that is fitted in such a manner that movement in the vertical direction and in the axial direction of the Y-axis is restricted from below through the block structure, and is guided so as to be relatively movable in the axial direction of the X-axis. an upper linear guide that is a structure, a lower flange plate that is a base plate structure that is supported by a lower foundation structure, a lower linear rail that is a rail structure that is supported by the lower flange plate and extends in the axial direction of the Y axis, and the lower part. The lower linear is a block structure that is fitted into the linear rail from above through a plurality of balls so that movement in the vertical direction and the axial direction of the X-axis is restricted, and is guided so as to be relatively movable in the axial direction of the Y-axis. a lower linear guide which is a linear motion structure having a block; a rubber shim which is an intermediate plate structure having a plate-like outline provided between the upper linear block and the lower linear block; the upper linear guide and the lower part; It is supported by a flange plate that is a base plate structure that is provided corresponding to at least one of the linear guides that is a linear motion structure and that supports the linear rail along the linear rail that is the rail structure of the linear guide. and a horizontal deformation function backup structure having a structure in which the linear block, which is a block structure of the linear guide, comes into contact with the horizontal deformation function backup structure when the ball is damaged, and the linear block fits into the horizontal deformation function backup structure. It is assumed that the rail is guided along the axial direction in which the rail extends.

In the configuration of the present invention described above, the virtual X-axis and the virtual Y-axis are perpendicular to each other in the horizontal plane. The upper flange plate is a base plate structure that supports the upper structure. The upper linear guide includes an upper linear rail having a rail structure that supports the upper flange plate and extends in the axial direction of the X-axis, and a plurality of balls on the upper linear rail from below in the up-down direction and in the axial direction of the Y-axis. It is a linear motion structure having an upper linear block which is a block structure that is fitted so that movement is restricted and is guided so as to be relatively movable in the axial direction of the X-axis. The lower flange plate is a base plate structure supported by the lower foundation structure. The lower linear guide includes a lower linear rail having a rail structure supported by the lower flange plate and extending in the axial direction of the Y-axis, and a plurality of balls connected to the lower linear rail from above in the vertical direction and in the axial direction of the X-axis. It is a linear motion structure having a lower linear block which is a block structure that is fitted so that movement is restricted and is guided so as to be relatively movable in the axial direction of the Y-axis. The rubber shim is an intermediate plate structure provided between the upper linear block and the lower linear block and having a plate-like outline. A horizontal deformation function backup structure is provided corresponding to the linear guide that is a linear motion structure of at least one of the upper linear guide and the lower linear guide, and the horizontal deformation function backup structure This structure is supported by a flange plate, which is a base plate structure that supports the rail. When the ball is damaged, the linear block that is the block structure of the linear guide comes into contact with the horizontal deformation function backup structure and is guided along the axial direction of the linear rail into which the linear block is fitted.
As a result, even if the ball is damaged due to an unexpected load, the horizontal deformation function can be assisted.

Below, a seismic isolation device according to an embodiment of the present invention will be described. The present invention includes any of the embodiments described below or a combination of two or more of them.

Further, the seismic isolation device according to the embodiment of the present invention includes a contact axial force detection sensor that is a sensor that detects that the linear block and the axial force retention function backup structure are in contact with each other.
According to the configuration of the embodiment according to the present invention, the contact axial force detection sensor is a sensor that detects that the linear block and the axial force retention function backup structure are in contact with each other.
As a result, it can be estimated that an unexpected load is acting on the seismic isolation device.

Further, in the seismic isolation device according to the embodiment of the present invention, at least one abutting surface of the linear block and the axial force retention function backup structure is coated with a low-friction material.
According to the configuration of the embodiment according to the present invention, at least one abutting surface of the linear block and the axial force retention function backup structure is coated with a low-friction material.
As a result, even when an unexpected load acts on the seismic isolation device, it can move stably in the XY directions.

Further, the elastic modulus of the base material of the axial force retention function backup structure is smaller than the elastic modulus of the base material of the linear block.
According to the configuration of the embodiment according to the present invention, the elastic modulus of the base material of the axial force retention function backup structure is smaller than the elastic modulus of the base material of the linear block.
As a result, even when an unexpected load acts on the seismic isolation device, the axial force holding function backup structure can deflect and assist the axial force holding function of the linear guide.

The invention also includes a horizontal deformation function backup structure that is supported by a flange plate that is a base plate structure that supports the linear rail along the linear rail that is the rail structure of the linear guide. At this time, the linear block that is the block structure of the linear guide comes into contact with the horizontal deformation function backup structure and is guided along the axial direction of the linear rail into which the linear block is fitted.
According to the configuration of the embodiment of the present invention, the horizontal deformation function backup structure is supported by a flange plate that is a base plate structure that supports the linear rail along the linear rail that is the rail structure of the linear guide. . When the ball is damaged, the linear block that is the block structure of the linear guide comes into contact with the horizontal deformation function backup structure and is guided along the axial direction of the linear rail into which the linear block is fitted.
As a result, even if the ball is damaged due to an unexpected load, the horizontal deformation function can be assisted.

Further, the axial force retention function backup structure is a plate structure provided between a surface of the linear block facing the flange plate and the horizontal deformation function backup structure.
According to the configuration of the embodiment of the present invention, the plate structure of the axial force retention function backup structure is provided sandwiched between the surface of the linear block facing the flange plate and the horizontal deformation function backup structure.
As a result, even if an unexpected load is applied, the axial force retention function can be assisted, and even if the ball is damaged, it can be horizontally deformed.

Further, at least one abutting surface of the linear block and the horizontal deformation function backup structure is coated with a low-friction material.
With the configuration of the embodiment of the present invention described above, at least one abutting surface of the linear block and the horizontal deformation function backup structure is coated with a low-friction material.
As a result, even if the ball is damaged by an unexpected load, it can be stably horizontally deformed.

Furthermore, when the ball is damaged, the linear block comes into contact with the horizontal deformation function backup structure, and movement in a direction intersecting the axial direction of the linear rail to which the linear block is fitted is restrained, and the linear block is fitted. It is guided along the axial direction in which the matching linear rails extend.
According to the configuration of the embodiment of the present invention, when the ball is damaged, the linear block comes into contact with the horizontal deformation function backup structure, and the linear block moves in a direction intersecting the extending axis of the linear rail into which the linear block is fitted. is guided along the axial direction of the linear rail into which the linear block is fitted.
As a result, even if the ball is damaged due to an unexpected load, the horizontal deformation function in the X-axis or Y-axis direction can be assisted.

Further, it includes a dimensional change sensor that is a sensor that measures dimensional changes of the rubber shim, and can estimate changes in vertical load from a correlation between dimensional changes and vertical loads prepared in advance.
According to the configuration of the embodiment of the present invention, the dimensional change sensor is a sensor that measures a dimensional change of the rubber shim. Changes in vertical load can be estimated from the correlation between dimensional changes and vertical loads prepared in advance.
As a result, the load acting on the seismic isolation device can be estimated.

Further, a contact detection sensor is provided, which is a sensor that detects that the linear block and the horizontal deformation function backup structure are in contact with each other.
According to the configuration of the embodiment of the present invention, the contact detection sensor is a sensor that detects that the linear block and the horizontal deformation function backup structure are in contact with each other.
As a result, damage to the seismic isolation device can be estimated.

The apparatus further includes an approach detection sensor that detects when the linear block and the horizontal deformation function backup structure approach each other.
With the configuration of the embodiment of the present invention described above, the approach detection sensor detects that the linear block and the horizontal deformation function backup structure approach each other.
As a result, damage to the seismic isolation device can be estimated.

Further, the approach detection sensor includes a plurality of detection switches that are turned on and off in order as the vertical gap between the linear block and the horizontal deformation function backup structure becomes narrower.
According to the configuration of the embodiment of the present invention, the plurality of detection switches of the approach detection sensor are sequentially turned on and off as the vertical gap between the linear block and the horizontal deformation function backup structure becomes narrower.
As a result, damage to the seismic isolation device can be estimated.

As explained above, the linear motion rolling seismic isolation device according to the present invention has the following effects due to its configuration.
A linear rail that extends vertically in the X-axis direction or Y-axis direction overlaps with a rubber shim in between, and is fitted to the linear rail via a plurality of balls so that movement in the vertical and horizontal directions is restrained. In a linear guide made of a linear block that is guided so as to be relatively movable in the axial direction, an axial force retention function backup structure is supported by the flange plate at a position of the linear block when it is installed along the linear rail, and when it is installed Since the surface of the linear block facing the flange plate is allowed to come into contact with the axial force retention function backup structure, the axial force retention function can be assisted even when an unexpected load is applied.
A linear rail that extends vertically in the X-axis direction or Y-axis direction overlaps with a rubber shim in between, and is fitted to the linear rail via a plurality of balls so that movement in the vertical and horizontal directions is restrained. In a linear guide made up of a linear block guided so as to be relatively movable in the axial direction, a horizontal deformation function backup structure extending along the linear rail is supported by a flange plate, and when the ball is damaged, the linear block Since the ball is guided in the axial direction by contacting the deformation function backup structure, even if the ball is damaged due to an unexpected load, the horizontal deformation function can be assisted.
In addition, since the axial force detection sensor detects that the linear block and the axial force retention function backup structure are in contact with each other, it can be estimated that an unexpected load is acting on the seismic isolation device. .
In addition, since the abutting surface of at least one of the linear block and the axial force retention function backup structure is coated with a low-friction material, even when an unexpected load acts on the seismic isolation device, the XY Can move in the direction.
In addition, since the elastic modulus of the base material of the axial force retention function backup structure is made smaller than the elastic modulus of the base material of the linear block, the axial force retention function can be maintained even when an unexpected load acts on the seismic isolation device. The backup structure can assist in maintaining the axial force of the linear guide while being deflected.
Further, when the ball is damaged, the linear block that is the block structure of the linear guide comes into contact with the horizontal deformation function backup structure and is guided along the axial direction of the linear rail to which the linear block is fitted. Therefore, even if the ball is damaged due to an unexpected load, the horizontal deformation function can be assisted.
Further, since the plate structure of the axial force retention function backup structure is provided between the surface of the linear block facing the flange plate and the horizontal deformation function backup structure, unexpected loads may not be applied. The ball can also assist in maintaining the axial force, and can be horizontally deformed even if the ball is damaged.
Furthermore, since the abutting surface of at least one of the linear block and the horizontal deformation function backup structure is coated with a low-friction material, even if the ball is damaged by an unexpected load, it can be stably horizontally deformed. .
Furthermore, when the ball is damaged, the linear block comes into contact with the horizontal deformation function backup structure, and movement in a direction intersecting the axial direction of the linear rail to which the linear block is fitted is restrained, and the linear block is fitted. Since the ball is guided along the axial direction of the matching linear rail, even if the ball is damaged due to an unexpected load, the horizontal deformation function in the X-axis or Y-axis direction can be assisted.
In addition, since the change in vertical load can be estimated from the correlation between the change in the dimensions of the rubber shim prepared in advance and the vertical load, the load acting on the seismic isolation device can be estimated.
Moreover, since the contact detection sensor detects the contact between the linear block and the horizontal deformation function backup structure, damage to the seismic isolation device can be estimated.
Further, since the approach detection sensor detects the approach of the linear block and the horizontal deformation function backup structure, damage to the seismic isolation device can be estimated.
Further, since the plurality of detection switches of the approach detection sensor are turned on/off in sequence as the vertical gap between the linear block and the horizontal deformation function backup structure becomes narrower, the plurality of detection switches are turned on/off in sequence. Damage to the seismic isolation device can be estimated by turning it off.
As a result, it is possible to provide a structure that can back up the axial force retention function or the horizontal deformation function or a structure that can estimate damage in the seismic isolation device.

1 is a conceptual diagram of a building according to an embodiment of the present invention. FIG. 1 is a conceptual diagram of a seismic isolation layer including an embodiment of the present invention. FIG. 1 is a partial diagram of part 1 of the seismic isolation device according to the first embodiment of the present invention. FIG. 2 is a partial diagram of part 2 of the seismic isolation device according to the first embodiment of the present invention. FIG. 3 is a partial diagram of part 3 of the seismic isolation device according to the first embodiment of the present invention. It is a partial diagram of the seismic isolation device part 4 based on the first embodiment of the present invention. FIG. 5 is a partial diagram of part 5 of the seismic isolation device according to the first embodiment of the present invention. FIG. 3 is a partial diagram of a seismic isolation device according to a second embodiment of the present invention. FIG. 2 is a partial diagram of part 1 of a seismic isolation device according to a third embodiment of the present invention. It is a partial diagram of the seismic isolation device part 2 based on the third embodiment of this invention. It is a partial diagram of the seismic isolation device part 3 based on the third embodiment of this invention. It is a partial diagram of part 4 of the seismic isolation device based on the third embodiment of this invention. It is a partial diagram of the seismic isolation device part 5 based on the third embodiment of this invention. It is a correlation diagram of vertical displacement and vertical load concerning an embodiment of the present invention. It is a partial diagram of part 6 of the seismic isolation device based on the third embodiment of this invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the present invention will be described below with reference to the drawings.

The seismic isolation device 31 according to the embodiment of the present invention is a structure that supports the building 10 and is provided between an upper structure and a lower foundation structure, which are a pair of upper and lower structures.
In the following description, it will be assumed that the seismic isolation device supporting the building 10 is composed of a linear motion rolling seismic isolation device 31 and a laminated rubber seismic isolation device containing lead plugs 32, as shown in FIG.

FIG. 2 is a conceptual diagram of a seismic isolation layer including an embodiment of the present invention.
The linear motion rolling seismic isolation device 31 will be described assuming that a pair of linear guides are provided to intersect in a cross shape when viewed from above.
In the upper structure of the linear motion rolling seismic isolation device 31 and the building 10, the upper anchor plate 11 and the upper flange plate 100u are connected by the upper anchor bolt 12.
In the lower structure of the linear motion rolling seismic isolation device 31 and the foundation 20, the lower anchor plate 21 and the lower flange plate 100d are connected by lower anchor bolts 22.
The linear motion rolling seismic isolation device 31 supports the building 10 through the rolling motion of the balls 110.
The linear motion rolling seismic isolation device 31 has a characteristic of having high rigidity in the vertical direction and being able to move in the horizontal direction without resistance.
The lead plug-containing laminated rubber seismic isolation device 32 supports the building 10 via laminated rubber plates and steel plates. The lead plug-containing laminated rubber seismic isolation device 32 is filled with lead plugs having a damping function.
The lead plug-containing laminated rubber seismic isolation device 32 has a vertical rigidity smaller than that of the linear motion rolling seismic isolation device 31, and has a characteristic that it has a large elastic modulus in the horizontal direction.
By combining the linear motion rolling seismic isolation device 31 and the lead plug-containing laminated rubber seismic isolation device 32, a seismic isolation device with desired vibration characteristics can be obtained.

Below, the seismic isolation device 31 according to the first to third embodiments of the present invention will be explained in order.
The seismic isolation device 31 according to the first to third embodiments of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a lower linear guide 200d, and a rubber shim 300. and a lower backup structure 230d.
The seismic isolation device 31 according to the first to third embodiments of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a lower linear guide 200d, and a rubber shim 300. and an upper backup structure (not shown).
The seismic isolation device 31 according to the first to third embodiments of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a lower linear guide 200d, and a rubber shim 300. It may be configured with an upper backup structure (not shown) and a lower backup structure 230d.
Below, the seismic isolation devices 31 according to the first to third embodiments of the present invention will be explained based on the drawings of those having a lower backup structure.
The seismic isolation device 31 according to the first embodiment of the present invention has an axial force retention function backup structure as a lower backup structure.
The seismic isolation device 31 according to the second embodiment of the present invention has an axial force retention function backup structure and a horizontal deformation function backup structure as lower backup structures.
The seismic isolation device 31 according to the third embodiment of the present invention has a horizontal deformation function backup structure as a lower backup structure.
For ease of explanation, the description will be made assuming that the virtual X-axis and the virtual Y-axis are perpendicular to each other in the horizontal plane.

First, the seismic isolation device 31 parts 1 to 5 according to the first embodiment of the present invention will be explained based on the drawings.

The first seismic isolation device according to the first embodiment of the present invention will be explained based on the drawings.
FIG. 3 is a partial view of the lower structure of the seismic isolation device No. 1 according to the first embodiment of the present invention.

Seismic isolation device No. 1 according to the first embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a rubber shim 300, a lower linear guide 200d, and an upper backup. (not shown) and a lower backup structure 230d.

The top flange plate (not shown) is the base plate structure that supports the superstructure.
For example, the superstructure is a foundation beam provided at the lowest level of the building 10.

The lower flange plate 100d is a base plate structure supported by the lower foundation structure.
For example, the lower foundation structure is a slab structure supported by foundation piles driven into the foundation 20 on which the building is installed.
The linear motion rolling seismic isolation device 31 is supported by the lower flange plate 100d and supports an upper flange plate (not shown).

The upper linear guide (not shown) is composed of an upper linear rail (not shown) and an upper linear block (not shown).

The upper linear rail (not shown) is a rail structure that supports the upper flange plate (not shown) and extends in the axial direction of the X-axis.
The upper linear rail (not shown) is provided so that a groove in which a ball 110 (described later) rolls extends along the axial direction of the X-axis.

The upper linear block 220u is fitted into an upper linear rail (not shown) from below through a plurality of balls 110 so as to be restrained from moving in the vertical direction and in the axial direction of the Y-axis, and relative to the axial direction of the X-axis. It is a block structure that is guided in a movable manner.

The upper backup structure (not shown) is a structure fixed to the upper flange plate (not shown) supported by the upper linear rail (not shown).

The lower linear guide 200d includes a lower linear rail 210d and a lower linear block 220d.
The lower linear guide 200d may include a lower linear rail 210d, a lower linear block 220d, and a lower backup structure 230d.

The lower linear rail 210d has a rail structure that supports the lower flange plate 100d and extends in the axial direction of the Y-axis.
The lower linear rail 210d is provided so that a groove in which a ball 110 (described later) rolls extends along the Y-axis.

The lower linear block 220d is fitted into the lower linear rail 210d from below through a plurality of balls 110 so as to be restrained from moving in the vertical direction and in the axial direction of the X-axis, and is guided so as to be relatively movable in the axial direction of the Y-axis. The block structure is

The lower backup structure 230d is a structure fixed to the lower flange plate 100d that supports the lower linear rail 210d.

Hereinafter, the upper flange plate (not shown) and the lower flange plate 100d will be referred to as a pair of upper and lower flange plates 100, and the upper linear guide (not shown) and the lower linear guide 200d will be referred to as a pair of upper and lower linear guides 200. The upper linear rail (not shown) and the lower linear rail 210d are referred to as a pair of upper and lower linear rails 210, the upper linear block 220u and the lower linear block 220d are referred to as a pair of upper and lower linear blocks 220, and the upper The backup structure (not shown) and the lower backup structure 230d are referred to as a pair of upper and lower backup structures 230.

The upper backup structure (not shown) and the lower backup structure 230d are composed of an axial force retention function backup structure 231.

The axial force retention function backup structure 231 is provided (corresponding to) the linear guide 200, which is a linear motion structure of at least one of the upper linear guide (not shown) and the lower linear guide 200d.
The axial force retention function backup structure 231 is a structure supported by the flange plate 100 that supports the linear rail 210 at a position of the linear block 220 along the linear rail 210 at least in the installed state.
The axial force retention function backup structure 231 may be a structure supported by the flange plate 100 that supports the linear rail 210 along the linear rail 210.

In the installed state, the surface of the linear block 220 facing the flange plate 100 can come into contact with the axial force retention function backup structure 231.
For example, in the installed state, the surface of the linear block 220 facing the flange plate 100 and the axial force retention function backup structure 231 come into contact.
For example, in the installed state, the surface of the linear block 220 facing the flange plate 100 and the axial force retention function backup structure 231 face each other with an extremely small gap.

In FIG. 3, an axial force retention function backup structure 231, which is an integral plate structure that substantially matches the size of the linear block 220 when viewed from above, is fixed to the flange plate 100. A portion of the upper surface of the linear block 220 is shown in contact with the surface of the linear block 220 facing the flange plate 100.
In this way, when an unexpected large load acts on the seismic isolation device, the axial force retention function backup structure 231, which is an integral plate structure, supports a part of the axial force that the linear block 220 receives. As a result, the axial force retention function backup structure 231 can assist the axial force retention function of the linear guide 200.

The modulus of elasticity of the base material of the axial force retention function backup structure 231 and the modulus of elasticity of the base material of the linear block may be different.
The elastic modulus of the base material of the axial force retention function backup structure 231 may be smaller than the elastic modulus of the base material of the linear block.
In this way, if the elastic modulus of the base material of the axial force retention function backup structure 231 and the elastic modulus of the linear block base material are selected to have a constant relationship, an unexpected large load can be applied to the seismic isolation device. At this time, the ratio of the axial force received by the linear block 220 and the axial force received by the axial force retention function backup structure 231, which is a plate structure, can be adjusted to a desired relationship. As a result, the axial force retention function backup structure 231 can assist the axial force retention function of the linear guide 200.

Next, the second seismic isolation device according to the first embodiment of the present invention will be explained based on the drawings.
FIG. 4 is a partial view of the lower structure of the second seismic isolation device according to the first embodiment of the present invention.

The second seismic isolation device according to the first embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a rubber shim 300, a lower linear guide 200d, and an axial force. It is composed of a holding function backup structure 231.
The main structures of the upper flange plate (not shown), the lower flange plate 100d, the upper linear guide (not shown), the lower linear guide 200d, and the axial force retention function backup structure 231 are the same as those described above, so a description will be given below. This will be omitted and only the different points will be explained.

In FIG. 4, an axial force retention function backup structure 231 is fixed to the flange plate 100, and is a plate structure in which a plurality of (for example, two) overlapping plates approximately match the size of the linear block 220d when viewed from above. A part of the upper surface of the axial force retention function backup structure 231 is shown in contact with the surface of the linear block 220 facing the flange plate 100.
In this way, when an unexpected large load acts on the seismic isolation device, part of the axial force that the linear block 220 receives is absorbed by the axial force retention function backup structure 231, which is a structure made of a plurality of (for example, two) overlapping plates. is supported. As a result, the axial force retention function backup structure 231 can assist the axial force retention function of the linear guide 200.
For example, the two overlapping plate structures include an upper plate structure 231a and a lower plate structure 231b.

At the time of installation, the axial force retention function backup structure 231 can be created by combining a plurality of plate structures with different plate thicknesses, and the installation of the axial force retention function backup structure 231 becomes easy.
Furthermore, when an earthquake occurs and the seismic isolation device undergoes horizontal deformation, some of the plurality of overlapping plate structures peel off from the axial force retention function backup structure 231, and subsequent horizontal deformation becomes smooth.
For example, when an earthquake occurs and the seismic isolation device undergoes horizontal deformation, the upper plate structure 231a peels off from the axial force retention function backup structure 231, and the subsequent horizontal deformation becomes smooth.

Next, the third seismic isolation device according to the first embodiment of the present invention will be explained based on the drawings.
FIG. 5 is a partial view of the lower structure of the third seismic isolation device according to the first embodiment of the present invention.

The third seismic isolation device according to the first embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a rubber shim 300, a lower linear guide 200d, and an axial force. It is composed of a holding function backup structure 231.
The main structures of the upper flange plate (not shown), the lower flange plate 100d, the upper linear guide (not shown), the lower linear guide 200d, and the axial force retention function backup structure 231 are the same as those described above, so a description will be given below. This will be omitted and only the different points will be explained.

In FIG. 5, an axial force retention function backup structure 231, which has a plurality of (for example, two) plate structures that substantially match the size of the linear block 220d when viewed from above, is fixed to the flange plate 100. A portion of the upper surface of the retention function backup structure 231 is shown abutting the surface of the linear block 220 facing the flange plate 100.
In this way, when an unexpected large load acts on the seismic isolation device, part of the axial force that the linear block 220 receives is absorbed by the axial force retention function backup structure 231, which has a plurality of plate structures (for example, a two-layer structure). is supported. As a result, the axial force retention function backup structure 231 can assist the axial force retention function of the linear guide 200.
For example, the two overlapping plate structures include an upper plate structure 231a and a lower plate structure 231b.

The axial force retention function backup structure 231 is configured by a plurality of plate structures overlapping each other in a tapered shape.
For example, the surfaces of the upper plate structure 231a and the lower plate structure 231b that face each other are reversely tapered.
At the time of installation, the axial force retention function backup structure 231 can be created by adjusting the overlap of the plurality of tapered plate structures and selecting the thickness, and the installation of the axial force retention function backup structure 231 is facilitated.
Furthermore, when an earthquake occurs and the seismic isolation device undergoes horizontal deformation, some of the plurality of overlapping plate structures peel off from the axial force retention function backup structure 231, and subsequent horizontal deformation becomes smooth.
For example, when an earthquake occurs and the seismic isolation device undergoes horizontal deformation, the upper plate structure 231a peels off from the axial force retention function backup structure 231, and the subsequent horizontal deformation becomes smooth.

Next, the fourth seismic isolation device 31 according to the first embodiment of the present invention will be explained based on the drawings.
FIG. 6 is a partial view of the lower structure of the fourth seismic isolation device 31 according to the first embodiment of the present invention.

The fourth seismic isolation device according to the first embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a rubber shim 300, a lower linear guide 200d, and an axial force. It is composed of a holding function backup structure 231 and an abutment axial force detection sensor 260.
The configuration of the upper flange plate (not shown), the upper linear guide (not shown), the lower flange plate 100d, the rubber shim 300, the lower linear guide 200d, and the axial force retention function backup structure 231 is the first embodiment of the present invention. Since it is the same as that of the seismic isolation device No. 1 according to the embodiment, the explanation will be omitted.

The contact axial force detection sensor 260 is provided corresponding to at least one of the linear guides 200 of the upper linear guide (not shown) and the lower linear guide 200d, and is connected to the linear block 220 and the axial force retention function backup structure 231. This is a sensor that detects when the object is in contact with the object.
For example, the contact axial force detection sensor is a touch sensor.
Since the linear block 220 and the axial force retention function backup structure 231 are in contact with each other, the contact axial force detection sensor 260 can determine that the axial force retention function backup structure 231 is assisting the axial force retention function.
The contact axial force detection sensor 260 is provided (corresponding) to at least one linear guide 200 of the upper linear guide (not shown) and the lower linear guide 200d, and is connected to the linear block 220 and the axial force retention function backup structure. 231 may be a sensor that detects that they are in contact with each other with a predetermined axial force or more.
For example, the contact axial force detection sensor 260 is a pressure sensor.
From the increase in the pressure detected by the contact axial force detection sensor 260, it can be determined that the axial force retention function backup structure 231 is assisting the axial force retention function.

Next, the seismic isolation device 31 part 5 according to the first embodiment of the present invention will be explained based on the drawings.
FIG. 6 is a partial view of the lower structure of the seismic isolation device 31 part 5 according to the first embodiment of the present invention.

The fourth seismic isolation device according to the first embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a rubber shim 300, a lower linear guide 200d, and an axial force. It is composed of a holding function backup structure 231.

The configuration of the upper flange plate (not shown), the upper linear guide (not shown), the lower flange plate 100d, the rubber shim 300, the lower linear guide 200d, and the axial force retention function backup structure 231 is the first embodiment of the present invention. Since it is the same as that of the seismic isolation device No. 1 according to the embodiment, the explanation will be omitted.

At least one abutting surface of the linear block 220 and the axial force retention function backup structure 231 is coated with a low-friction material M.
FIG. 7 shows how the surface of the axial force retention function backup structure 231 that comes into contact with the linear block 220 is coated with a low-friction material M.
In this way, when an earthquake occurs and the seismic isolation device exhibits a horizontal deformation function, the linear block 220 can stably move on the axial force retention function backup structure 231.
The low-friction material M may be stretched over the plate structure that constitutes the axial force retention function backup structure 231.
The low-friction material M may have a modified plate structure that constitutes the axial force retention function backup structure 231.

Next, a seismic isolation device according to a second embodiment of the present invention will be explained based on the drawings.
FIG. 8 is a partial view of the lower structure of the seismic isolation device according to the second embodiment of the present invention.

The seismic isolation device according to the second embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a rubber shim 300, a lower linear guide 200d, and a backup structure 230. Consists of.
The backup structure 230 includes an axial force retention function backup structure 231 and a horizontal deformation function backup structure 232.
The structure of the upper flange plate (not shown), the upper linear guide (not shown), the lower flange plate 100d, the rubber shim 300, and the lower linear guide 200d is the same as that described in the seismic isolation device according to the first embodiment of the present invention. Since it is the same, the explanation will be omitted.
The main parts of the configuration of the axial force retention function backup structure 231 are the same as those in the seismic isolation device according to the first embodiment of the present invention, so only the different points will be explained.
The horizontal deformation function backup structure 232 will be described in detail later in the description of the seismic isolation device according to the third embodiment of the present invention, so a description thereof will be omitted.

In FIG. 8, an axial force retention function backup structure 231, which is an integral plate structure that substantially matches the size of the linear block 220d when viewed from above, is supported by the flange plate 100 via a horizontal deformation function backup structure 232, and the plate structure A part of the upper surface of the axial force retention function backup structure 231 is shown in contact with the surface of the linear block 220 facing the flange plate 100.
In this way, when an unexpected large load acts on the seismic isolation device, the axial force retention function backup structure 231, which is an integral plate structure, supports a part of the axial force that the linear block 220 receives. As a result, the axial force retention function backup structure 231 can assist the axial force retention function of the linear guide 200.

In this way, the backup structure 230 can assist the linear guide 200 in its axial force retention function and horizontal deformation function.
In addition, when an earthquake occurs and the base isolation device is horizontally deformed, the force retention function backup structure 231 of the multiple overlapping plate structures will peel off from the horizontal deformation function backup structure 232, and the subsequent horizontal deformation function will be smoothly performed. I can assist.

Finally, the seismic isolation device 31 parts 1 to 6 according to the third embodiment of the present invention will be explained in order based on the drawings.

The first seismic isolation device according to the third embodiment of the present invention will be explained based on the drawings.
FIG. 9 is a partial view of the lower structure of the first seismic isolation device according to the third embodiment of the present invention.

Seismic isolation device No. 1 according to the third embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a rubber shim 300, a lower linear guide 200d, and a backup structure. 230.
The backup structure 230 is comprised of a horizontal deformation function backup structure 232 .
The structure of the upper flange plate (not shown), the upper linear guide (not shown), the lower flange plate 100d, the rubber shim 300, and the lower linear guide 200d is the same as that described in the seismic isolation device according to the first embodiment of the present invention. Since it is the same, the explanation will be omitted.

The horizontal deformation function backup structure 232 is provided in at least one of the linear guides 200 of the upper linear guide (not shown) and the lower linear guide 200d, and is supported by the flange plate 100 along the linear rail 210.
The horizontal deformation function backup structure 232 is provided in at least one of the upper linear guide (not shown) and the lower linear guide 200d, extends along the linear rail 210, and is supported by the flange plate 100.

When the ball 110 is damaged, the linear block 220 comes into contact with the horizontal deformation function backup structure 232 and is guided along the axial direction of the linear rail 210 to which the linear block 220 is fitted.
In order to prevent the linear block 220 from coming into contact with the linear rail 210 when the ball 110 is damaged, the linear block 220 comes into contact with the horizontal deformation function backup structure 232 and the linear block 220 is inserted along the axial direction of the linear rail 210 into which the linear block 220 fits. You will be guided.
For example, horizontal deformation function backup structure 232 is configured with bottom plate structure 232b.
When the ball 110 is damaged, the linear block 220 contacts the bottom plate structure 232b and is guided along the axial direction of the linear rail 210 to which the linear block 220 is fitted.

When the ball 110 is damaged, the linear block 220 comes into contact with the linear rail 210, and the linear rail 210 that the linear block 220 fits on is restrained from moving in the direction that intersects the extending axis of the linear rail 210 that the linear block 220 fits on. It may be guided along the axial direction in which it extends.
In order to prevent the linear block 220 from contacting the upper part of the linear rail 210 when the ball 110 is damaged, the linear block 220 contacts the linear rail 210 so that the linear block 220 intersects with the extending axial direction of the linear rail 210 to which the linear block 220 is fitted. The linear rail 210 may be guided along the axial direction of the linear rail 210 to which the linear block 220 is fitted and whose directional movement is restricted.
For example, the vertical dimension v1 of the gap between the linear block 220 and the linear rail 210 is larger than the vertical dimension v2 of the gap between the linear block 220 and the bottom plate structure 232b.

Next, the second seismic isolation device according to the third embodiment of the present invention will be explained based on the drawings.
FIG. 10 is a partial view of the lower structure of the second seismic isolation device according to the third embodiment of the present invention.

Seismic isolation device No. 2 according to the third embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a lower linear guide 200d, a rubber shim 300, and a horizontal deformation function backup structure 232. and a contact detection sensor 240.
For ease of explanation, the description will be made assuming that the virtual X-axis and the virtual Y-axis are perpendicular to each other in the horizontal plane.

The main configuration of the upper flange plate (not shown), the upper linear guide (not shown), the lower flange plate 100d, the lower linear guide 200d, the rubber shim 300, and the horizontal deformation function backup structure 232 is the same as in the third embodiment. Since this is the same as that of the seismic isolation device No. 1, only the different configurations will be explained.

The action when the ball 110 is damaged is the same as the action of the seismic isolation device No. 1 according to the third embodiment of the present invention, so a description thereof will be omitted.

The contact detection sensor 240 is a sensor that is provided on at least one of the linear guides 200 of the upper linear guide (not shown) and the lower linear guide 200d and detects that the linear block 220 and the backup structure 230 are in contact with each other. be.
The contact detection sensor 240 may include an upper contact detection sensor 240u.
The contact detection sensor 240 may include a lower contact detection sensor 240d.
The contact detection sensor 240 may include an upper contact detection sensor 240u and a lower contact detection sensor 240d.
The contact detection sensor 240 may be a so-called touch sensor.
The contact detection sensor 240 may be a touch sensor that detects contact by detecting a change in capacitance.
The contact detection sensor 240 may be a touch sensor that detects contact by detecting a change in electrical resistance due to contact.
The contact detection sensor 240 may be a touch sensor that detects contact by detecting a change in the on/off state of an internal switch due to contact.

Next, a third seismic isolation device according to a third embodiment of the present invention will be explained based on the drawings.
FIG. 11 is a partial view of a linear motion rolling seismic isolation device according to a third embodiment of the present invention.

Seismic isolation device No. 3 according to the third embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a lower linear guide 200d, a rubber shim 300, and a horizontal deformation function backup. It is composed of a structure 232 and a contact detection sensor 240.
For ease of explanation, the description will be made assuming that the virtual X-axis and the virtual Y-axis are perpendicular to each other in the horizontal plane.

The main components of the upper flange plate (not shown), the upper linear guide (not shown), the lower flange plate 100d, the lower linear guide 200d, the rubber shim 300, the horizontal deformation function backup structure 232, and the contact detection sensor 240 are as follows. Since this is the same as the second seismic isolation device according to the third embodiment of the invention, only the different configurations will be explained.

The effect when the ball 110 is damaged is the same as the effect of the second seismic isolation device according to the third embodiment of the present invention, so a description thereof will be omitted.

The low-friction material M is provided on at least one of the upper linear guide (not shown) and the lower linear guide, and a contacting surface of at least one of the linear block 220 and the backup structure 230 is coated with a low-friction material M.
A contacting surface of at least one of the upper linear block 220u and the upper backup structure (not shown) may be coated with a low-friction material M.
A contacting surface of at least one of the lower linear block 220d and the upper backup structure (not shown) may be coated with a low-friction material M.
For example, the abutting surfaces of at least one of the linear block 220 and the backup structure 231 are coated with a low-friction material M.
The low-friction material M may be attached to the abutting surface of at least one of the linear block 220 and the backup structure 231.
The low-friction material M may be one in which the surface of at least one of the linear block 220 and the backup structure 231 that contacts is modified.
For example, the low-friction material M is modified by impregnating the abutting surface of at least one of the linear block 220 and the backup structure 231 with a low-friction substance.

Next, a fourth seismic isolation device according to a third embodiment of the present invention will be explained based on the drawings.
FIG. 12 is a partial view of the lower structure of the fourth seismic isolation device according to the third embodiment of the present invention.

The fourth linear motion rolling seismic isolation device according to the third embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a lower linear guide 200d, and a rubber shim 300. , a horizontal deformation function backup structure 232 , and a proximity detection sensor 250 .
For ease of explanation, the description will be made assuming that the virtual X-axis and the virtual Y-axis are perpendicular to each other in the horizontal plane.

The main components of the upper flange plate (not shown), the upper linear guide (not shown), the lower flange plate 100d, the lower linear guide 200d, the rubber shim 300, the horizontal deformation function backup structure 232, and the approach detection sensor 250 are as follows: Since this is the same as the linear motion rolling seismic isolation device according to the embodiment, only the different configurations will be explained.

The horizontal deformation function backup structure 232 includes a bottom plate structure 232b and a wall plate structure 232w.
When the ball 110 is damaged, the linear block comes into contact with the bottom plate structure 232b and the wall plate structure 232w, and is restrained from moving in a direction intersecting the axial direction in which the linear rail 210 extends, and the linear block 220 is fitted into the linear block 220. It may be guided along the axial direction in which the rail 210 extends.
When the ball 110 is damaged, the linear block 220 contacts the bottom plate structure 232b and the wall plate structure 232w so that the linear block 220 does not come into contact with the linear rail 210, and the linear block 220 fits into the linear rail 210. The linear block 220 may be guided along the axial direction of the linear rail 210 to which the linear block 220 fits, while being restrained from moving in a direction intersecting the axial direction in which the linear block 220 is fitted.
For example, the horizontal dimension h1 of the gap between the linear block 220 and the linear rail 210 is larger than the horizontal dimension h2 of the gap between the linear block 220 and the wall plate structure 232w.

Next, a fifth seismic isolation device according to a third embodiment of the present invention will be explained based on the drawings.
FIG. 13 is a partial view of the lower structure of the seismic isolation device No. 5 according to the third embodiment of the present invention.

Seismic isolation device No. 5 according to the third embodiment of the present invention is in contact with an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a lower linear guide 200d, and a rubber shim 300. It is composed of a detection sensor 240 and a dimensional change sensor 310.
For ease of explanation, the description will be made assuming that the virtual X-axis and the virtual Y-axis are perpendicular to each other in the horizontal plane.

The main configurations of the upper flange plate (not shown), the upper linear guide (not shown), the lower flange plate 100d, the lower linear guide 200d, the rubber shim 300, and the contact detection sensor 240 are the same as those in the third embodiment. Since this is the same as the fourth dynamic rolling seismic isolation device, only the different configurations will be explained.

The effect when the ball 110 is damaged is the same as the effect of the fourth seismic isolation device according to the third embodiment of the present invention, so a description thereof will be omitted.

The dimensional change sensor 310 is a sensor that measures the dimensional change of the rubber shim 300.
Changes in vertical load can be estimated from the correlation between changes in dimensions and vertical load prepared in advance.

Dimensional change sensor 310 may be a vertical displacement sensor.
The vertical displacement sensor is a sensor that measures changes in vertical displacement of the rubber shim 300.
A correlation between vertical displacement and vertical load is prepared in advance, and a change in vertical load is estimated from the correlation between vertical displacement and vertical load prepared in advance.
FIG. 14 is a diagram showing the correlation between vertical displacement and vertical load.
For example, when the actually measured vertical displacement is D1, it can be estimated to be 1.0 times the static load rating P0. This value corresponds to long-term loading. When the actually measured vertical displacement is D2, it can be estimated to be 2.0 times the static load rating P0. This value corresponds to a short-term load. When the actually measured vertical load is D3, it can be estimated to be 3.34 times the static load rating P0. This value corresponds to the critical load.

Dimensional change sensor 310 may be a perimeter sensor.
For example, the perimeter sensor is a sensor that measures changes in the perimeter of the rubber shim 300 along the X and Y axes.
For example, as the vertical load increases, the vertical displacement increases.
For example, the perimeter sensor is a sensor that measures the resistance value of an electric wire provided to surround the rubber shim 300 along the X-axis and the Y-axis.
For example, as the vertical load increases, the vertical displacement increases and the resistance value changes.
A correlation between vertical displacement and vertical load is prepared in advance, and a change in vertical load can be estimated from the correlation between vertical displacement and vertical load prepared in advance.

Next, the seismic isolation device No. 6 according to the third embodiment of the present invention will be explained based on the drawings.
FIG. 15 is a partial view of the lower structure of the seismic isolation device No. 6 according to the third embodiment of the present invention.

Seismic isolation device No. 6 according to the third embodiment of the present invention includes an upper flange plate (not shown), an upper linear guide (not shown), a lower flange plate 100d, a lower linear guide 200d, a rubber shim 300, and horizontal deformation. It is composed of a functional backup structure 232 and a proximity detection sensor 250.
For ease of explanation, the description will be made assuming that the virtual X-axis and the virtual Y-axis are perpendicular to each other in the horizontal plane.

The main configuration of the upper flange plate (not shown), the upper linear guide (not shown), the lower flange plate 100d, the lower linear guide 200d, the rubber shim 300, and the horizontal deformation function backup structure 232 is the same as in the third embodiment. Since this is the same as that of the seismic isolation device No. 4, only the different configurations will be explained.

The effect when the ball 110 is damaged is the same as the effect of the fourth seismic isolation device according to the third embodiment of the present invention, so a description thereof will be omitted.

The approach detection sensor 250 is provided on at least one of the upper linear guide (not shown) and the lower linear guide 200d, and is a sensor that detects that the linear block 220 and the backup structure 230 approach each other. .
The proximity detection sensor 250 may be provided on an upper linear guide (not shown).
The approach detection sensor 250 may be provided on the lower linear guide 200d.
A pair of upper and lower approach detection sensors 250 may be provided on each of the upper linear guide (not shown) and the lower linear guide 200d.
The approach detection sensor 250 has a plurality of detection switches that are turned on and off in order as the vertical gap between the linear block 220 and the backup structure 230 becomes narrower.
For example, the approach detection sensor 250 includes a first detection switch 251, a second detection switch 253, and a third detection switch 253, which are turned on and off in order as the vertical gap between the linear block 220 and the backup structure becomes narrower. be done.

For example, let the gap between the first detection switch 251 be v3, the gap between the second detection switch 252 be v4, and the gap between the third detection switch 253 be v5.
For example, v3 represents the amount of shrinkage caused by long-term load during construction from the initial state of no load, v4 represents the gap between the linear block 220 and the end plate 221, and v5 represents the gap between the linear block 220 and the linear rail 210. .
As shown in the correlation between vertical displacement and vertical load in FIG. 14, when the first detection switch 251 detects that it is on, the second detection switch 252 turns on to determine how many times the long-term load is the static load rating during construction. When the linear block 220 and the linear rail are detected, how many times the static load rating is the load when the linear block 220 and the end plate 221 come into contact, and when the third detection switch 253 is turned on, the linear block 220 and the linear rail It is possible to estimate how many times the load when 210 contacts the static load rating.
Although the approach detection sensors 250 are installed at three locations along the virtual Y-axis in FIG. 15, it goes without saying that they may be installed along the virtual X-axis.

The linear motion rolling seismic isolation device 31 according to the embodiment of the present invention has the following effects due to its configuration.
A linear rail 210 extending vertically in the X-axis direction or Y-axis direction overlapping with the rubber shim 300 in between, and the linear rail 210 are restrained from vertical and horizontal movement via a plurality of balls 110. In the linear guide 200 made of a linear block 220 that is fitted into the linear block 220 and is guided so as to be relatively movable in the axial direction, the axial force retention function backup structure 231 is installed at a certain position of the linear block 220 when installed along the linear rail 210. Since it is supported by the flange plate and the surface of the linear block 220 facing the flange plate can come into contact with the axial force retention function backup structure 231 in the installed state, the axial force retention function can be maintained even if an unexpected load is applied. I can assist.
A linear rail 210 extending vertically in the X-axis direction or Y-axis direction overlapping with the rubber shim 300 in between, and the linear rail 210 are restrained from vertical and horizontal movement via a plurality of balls 110. In the linear guide 200 made of a linear block 220 that is fitted into the linear block 220 and guided so as to be relatively movable in the axial direction, a horizontal deformation function backup structure 232 extending along the linear rail 210 is supported by the flange plate, and the ball 110 is large. When damaged, the linear block 220 comes into contact with the horizontal deformation function backup structure 232 and is guided along the axial direction, so even if the ball 110 is damaged due to an unexpected load, the horizontal deformation function can be assisted. .
Furthermore, since the contact axial force detection sensor 260 detects that the linear block 220 and the axial force retention function backup structure 231 are in contact with each other, unexpected loads are not applied to the seismic isolation device 31. It can be estimated that
In addition, since the abutting surfaces of at least one of the linear block 220 and the axial force retention function backup structure 231 are coated with a low-friction material, it is stable even when an unexpected load acts on the seismic isolation device 31. Can move in XY directions.
In addition, since the elastic modulus of the base material of the axial force retention function backup structure 231 is made smaller than the elastic modulus of the base material of the linear block 220, the axial force retention function can be maintained even when an unexpected load acts on the seismic isolation device 31. The backup structure 231 can assist the function of maintaining the axial force of the linear guide 200 while being deflected.
Furthermore, when the ball 110 is damaged, the linear block 220 that is the block structure of the linear guide 200 comes into contact with the horizontal deformation function backup structure 232 and is guided along the axial direction of the linear rail 210 to which the linear block 220 is fitted. Therefore, even if the ball 110 is damaged due to an unexpected load, the horizontal deformation function can be assisted.
In addition, since the plate structure of the axial force retention function backup structure 231 is sandwiched between the surface of the linear block 220 facing the flange plate and the horizontal deformation function backup structure 232, even when unexpected loads are applied, It can assist the function of maintaining the axial force, and even if the ball 110 is damaged, it can be horizontally deformed.
Furthermore, since the abutting surfaces of at least one of the linear block 220 and the horizontal deformation function backup structure 232 are coated with a low-friction material, even if the ball 110 is damaged by an unexpected load, the horizontal deformation is stable. can.
Further, when the ball 110 is damaged, the linear block 220 comes into contact with the horizontal deformation function backup structure 232, and movement in the direction intersecting the axial direction of the linear rail 210 to which the linear block 220 is fitted is restrained, and the linear block 220 is fitted. Since the ball 110 is guided along the axial direction of the mating linear rail 210, even if the ball 110 is damaged due to an unexpected load, the horizontal deformation function in the X-axis or Y-axis direction can be assisted.
Moreover, since the change in vertical load can be estimated from the correlation between the change in the dimensions of the rubber shim 300 prepared in advance and the vertical load, the load acting on the seismic isolation device 31 can be estimated.
Further, since the contact detection sensor 240 detects the contact between the linear block 220 and the horizontal deformation function backup structure 232, damage to the seismic isolation device 31 can be estimated.
Moreover, since the approach detection sensor 250 detects the approach of the linear block 220 and the horizontal deformation function backup structure 232, damage to the seismic isolation device 31 can be estimated.
Further, since the plurality of detection switches of the approach detection sensor 250 are configured to turn on/off in sequence as the vertical gap between the linear block 220 and the horizontal deformation function backup structure 232 becomes narrower, the plurality of detection switches are turned on/off in sequence. Damage to the seismic isolation device 31 can be estimated by turning it off.

The present invention is not limited to the embodiments described above, and various changes can be made without departing from the gist of the invention.

v1 Vertical dimension of the gap v2 Vertical dimension of the gap h1 Horizontal dimension of the gap h2 Horizontal dimension of the gap X X axis Y Y axis M Low friction material 10 Building 11 Upper anchor plate 12 Upper anchor bolt 20 Foundation 21 Lower anchor plate 22 Lower anchor bolt 31 Direct motion rolling seismic isolation device 32 Laminated rubber seismic isolation device with lead plug 100 Flange plate 100u Upper flange plate 100d Lower flange plate 110 Ball 200 Linear guide 200u Upper linear guide 200d Lower linear guide 210 Linear rail 210u Upper linear rail 210d Lower linear rail 220 Linear block 220u Upper linear block 220d Lower linear block 221u Upper end plate 221d Lower end plate 230 Backup structure 230u Upper backup structure 230d Lower backup structure 231 Axial force retention mechanism backup structure 231a Upper plate Structure 231b Lower plate structure 232 Horizontal deformation function backup structure 232w Wall plate structure 232b Bottom plate structure 240 Contact detection sensor 250 Approach detection sensor 251 First detection switch 252 Second detection switch 253 Third detection switch 260 Contact axial force detection Sensor 300 Rubber shim 310 Dimensional change sensor

Claims (12)

A seismic isolation device that supports a building and is installed between an upper structure and a lower foundation structure that are a pair of upper and lower structures,
The virtual X-axis and the virtual Y-axis are orthogonal in the horizontal plane,
an upper flange plate that is a base plate structure that supports the upper structure;
An upper linear rail is a rail structure that supports the upper flange plate and extends in the axial direction of the X-axis, and the upper linear rail is restrained from moving in the vertical direction and in the axial direction of the Y-axis from below via a plurality of balls. an upper linear guide that is a linear motion structure having an upper linear block that is a block structure that is fitted in a similar manner and guided so as to be relatively movable in the axial direction of the X-axis;
a lower flange plate that is a foundation plate structure supported by the lower foundation structure;
A lower linear rail, which is a rail structure supported by the lower flange plate and extending in the axial direction of the Y-axis, is restrained from moving in the vertical direction and in the axial direction of the X-axis from above via a plurality of balls on the lower linear rail. a lower linear guide that is a linear motion structure having a lower linear block that is a block structure that is fitted in a similar manner and guided so as to be relatively movable in the axial direction of the Y-axis;
a rubber shim that is an intermediate plate structure having a plate-like outline and provided between the upper linear block and the lower linear block;
A block of the linear guide is provided corresponding to a linear guide that is a linear motion structure of at least one of the upper linear guide and the lower linear guide and is installed at least along a linear rail that is a rail structure of the linear guide. an axial force retention function backup structure that is supported by a flange plate that is a base plate structure that supports the linear rail at a certain position of the linear block that is the structure;
Equipped with
In the installed state, the surface of the linear block facing the flange plate and the axial force retention function backup structure can come into contact with each other.
A seismic isolation device characterized by: a contact axial force detection sensor that detects that the linear block and the axial force retention function backup structure are in contact;
The seismic isolation device according to claim 1, further comprising: At least one abutting surface of the linear block and the axial force retention function backup structure is coated with a low-friction material.
The seismic isolation device according to claim 1 , characterized in that: The elastic modulus of the base material of the axial force retention function backup structure is smaller than the elastic modulus of the base material of the linear block.
The seismic isolation device according to claim 1 , characterized in that: a horizontal deformation function backup structure that extends along a linear rail that is a rail structure of the linear guide and is supported by a flange plate that is a base plate structure that supports the linear rail;
Equipped with
In the installed state, the axial force retention function backup structure is supported by the flange plate via the horizontal deformation function backup structure,
When the ball is damaged and the linear block moves along the axial direction from its installed position and comes off the axial force retention function backup structure, the linear block, which is the block structure of the linear guide, moves from the installed position to the horizontal deformation function backup structure. guided along the axial direction of the linear rail to which the linear block is fitted and in contact with the linear rail;
The seismic isolation device according to claim 1 , characterized in that: a horizontal deformation function backup structure that extends along a linear rail that is a rail structure of the linear guide and is supported by a flange plate that is a base plate structure that supports the linear rail;
Equipped with
In the installed state, the axial force retention function backup structure is supported by the flange plate via the horizontal deformation function backup structure,
The axial force retention function backup structure is a plate structure provided between a surface of the linear block facing the flange plate and the horizontal deformation function backup structure in an installed state;
When the ball is damaged and the axial force retention function backup structure peels off from the horizontal deformation function backup structure, the linear block that is the block structure of the linear guide comes into contact with the horizontal deformation function backup structure, and the linear block guided along the axial direction of the fitted linear rail;
The seismic isolation device according to claim 1 , characterized in that: At least one abutting surface of the linear block and the horizontal deformation function backup structure is coated with a low-friction material.
The seismic isolation device according to claim 5 or 6, characterized in that: When the ball is damaged, the linear block comes into contact with the horizontal deformation function backup structure, and movement in a direction intersecting the extending axis of the linear rail to which the linear block is fitted is restrained, and the linear block is fitted. guided along the axial direction in which the linear rail extends;
The seismic isolation device according to claim 5 or 6, characterized in that: a dimensional change sensor that measures a change in the dimensions of the rubber shim;
Equipped with
Changes in vertical load can be estimated from the correlation between changes in dimensions and vertical load prepared in advance.
The seismic isolation device according to claim 1 , characterized in that: a contact detection sensor that detects that the linear block and the horizontal deformation function backup structure are in contact;
The seismic isolation device according to claim 5 or 6, characterized in that it comprises: an approach detection sensor that detects that the linear block and the horizontal deformation function backup structure approach each other;
The seismic isolation device according to claim 5 or 6, characterized in that it comprises: The approach detection sensor has a plurality of detection switches that are turned on and off in sequence as the vertical gap between the linear block and the horizontal deformation function backup structure becomes narrower.
The seismic isolation device according to claim 11 .

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