JPH0758106B2 - Seismic isolation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is intended to support foundations of various buildings, floors in buildings or various devices or articles while protecting them from earthquakes and other vibrations. It relates to seismic devices.

[Prior Art] Conventional seismic isolation devices basically support the floor.
It is proposed that legs are formed at the bottom of the plate and rubbers are attached to the lower ends of these legs.

In addition, there is a seismic isolation device in which an elastic material is arranged between the foundation and the structure.

No seismic isolation device to support the foundation has been proposed.

[Problems to be solved by the invention] The former is integrated with the floor and cannot be freely used for seismic isolation of various objects. Furthermore, it is difficult to say that the mechanism has sufficient seismic isolation in both the horizontal and vertical directions.

Similarly, the latter cannot be freely applied to various objects and its seismic isolation is not sufficient.

INDUSTRIAL APPLICABILITY The present invention easily supports the base of a building itself in addition to the floor of a building, or various seismic isolated objects such as various kinds of articles or devices, while easily supporting them in the horizontal and vertical directions. It is an object of the present invention to provide a device capable of providing a high degree of seismic isolation against any of

[Means for Solving the Problems] The gist of the configuration of the present invention is that it is located between an upper seismic isolation target and a lower base portion, and is fixed on either the former or the latter and the upper or lower surface thereof. However, the other is slidably joined to the ring-shaped elastic body, and is located at a position corresponding to the axis of the ring-shaped elastic body, and is fixed to the seismic isolation target or the base portion and one of the upper end and the lower end thereof, and the other Is a non-fixed elastic column, and either the base isolation target or the base portion is configured to face the non-fixed end of the elastic column, and the moving range of the non-fixed end of the elastic column is within an annular range. It is a seismic isolation device that is composed of a regulation ring that regulates to.

The seismic isolation target is the foundation of various buildings, floors in buildings, or various devices or articles. Examples of the devices or articles include computers.

Specifically, the base portion serves as a floor base when supporting the floor, and serves as a floor when using a device such as a computer. In the case of the foundation of a building, it is a structure that is constructed on the ground below and supports the foundation. In any case, the base part is a structure that supports the seismic isolation target.

The ring-shaped elastic body is formed of, for example, an annular member whose main surface is synthetic rubber and whose upper and lower surfaces are flat. The inner diameter should be determined in consideration of how much horizontal amplitude such as an earthquake can be tolerated. That is, according to a specific configuration, when the upper end or the lower end of the elastic column swings relatively horizontally in an expected maximum earthquake, the end portion on the fixed side or the outer periphery of the regulation ring is Should be determined so as not to contact the inner circumference of the ring-shaped elastic body.

Further, it is suitable that the ring-shaped elastic body has a substantially rectangular parallelepiped cross section. However, if necessary, it is also suitable to form the T-shape or the inverted T-shape in cross section so that the area on the surface side that is slidably joined to either the seismic isolation target or the base portion is wide. Specifically, a ring-shaped plastic plate or metal plate corresponding to the slide surface is fixed. And such a slide surface is configured as a smooth surface regardless of whether the area is increased as described above. By the way, the synthetic rubber constituting the ring-shaped elastic body is not limited to a specific material, but it is assumed to have appropriate elasticity in consideration of its width and the like. It is appropriate to prepare those with various elasticity in appropriate stage divisions and use them properly according to the weight of the seismic isolation target supported by them. The ring-shaped elastic body and the seismic isolation target or the base portion may be fixed directly or indirectly with something interposed therebetween.

As described above, the elastic column should be arranged in a position corresponding to the axial center of the ring-shaped elastic body, that is, in the same direction toward the center, and its length is one ring-shaped elastic body. , About the same as or slightly lower than the height. As will be described later, when the ring-shaped elastic bodies are opposed to each other and the outer surfaces thereof are fixedly mounted on the base portion and the seismic isolation target, respectively, the height of the pair of ring-shaped elastic bodies is almost the same as or slightly smaller than the height of the pair of ring-shaped elastic bodies. To a low level. The overall shape of the elastic column is substantially columnar, and the non-fixed end portion thereof is formed into a small diameter portion as necessary. Similar to the ring-shaped elastic body, the elastic column is mainly made of synthetic rubber, and the elasticity and other conditions are determined in consideration of the weight of the corresponding seismic isolation target and the like. The small diameter portion is preferably made of a metal that does not easily deform, or a member having a certain degree of hardness.

Further, the restriction ring may be directly formed on the lower surface of the corresponding seismic isolation target, the upper surface of the base portion, or a plate member coupled to these, but it is formed by a separately molded ring member and fixed to them. It is appropriate to install it. The inner diameter is an appropriate diameter for restricting the horizontal swinging movement range of the non-fixed side end of the elastic column due to vibration such as an earthquake. That is, the amplitude may be set to the level in the horizontal direction due to the relatively frequent earthquakes. Of course, it is not limited to this. In addition, the height of the restriction ring is such that when the maximum allowable amplitude is generated inside the ring-shaped elastic body, the non-fixed side end of the elastic column that is obliquely tilted from the inner circumference of the restriction ring. You can set it to the extent that it does not come off.

In addition, it is preferable to prepare an elastic coupling member having a very good stretchability for connecting the seismic isolation target and the base portion as necessary so that the seismic isolation target and the base portion can be appropriately coupled.

[Operation] Since the present invention is configured as described above, a plurality of it is used to support the floor inside it in various buildings,
Or used to protect the above-mentioned seismic isolation target by supporting the foundation of the building itself to attenuate earthquakes or other shaking, or by supporting various devices or various items to attenuate earthquakes or other shaking. be able to.

For example, in the case of supporting a floor to be seismically isolated by this seismic isolation device, either the upper surface or the lower surface of the ring-shaped elastic body is attached to the substrate to be fixed on the lower surface of the floor member or the upper surface of the floor base that is the base portion. It is fixed and the other is slidably joined.
Here, in order to simplify the description, the lower surface of the ring-shaped elastic body is fixed to the substrate, and the upper surface is slidably joined to the lower surface of the floor member.

Further, the elastic column is arranged at a position corresponding to the center of the ring-shaped elastic body, and the upper end or the lower end thereof is fixed to the lower surface of the floor member or the upper surface of the substrate. Here, for the same reason as in the case of the ring-shaped elastic body, it is assumed that the lower end is fixedly mounted on the substrate.

However, the elastic ring in the stationary state of the restriction ring is
The lower surface of the floor member is formed so as to be the center thereof.

Further, as described above, the lower surface of the floor member is connected to the upper surface of the substrate at an appropriate position by the elastic connecting member so that they are not separated unintentionally. It is intended to facilitate handling.

As described above, by arranging the substrates supporting the floor member on the floor substrate while bonding the side portions to each other, the floor surface can be easily formed on the floor substrate.

A desired decorative material is attached to the upper surface of the floor member to complete the floor. It is appropriate that a slight gap be provided at the outer edge of the installation region of the floor member, that is, a position adjacent to the wall surface, and a cushion member be disposed in the gap.

Thus, the seismic isolation device of the present invention can be extremely easily assembled to various seismic isolation targets.

In addition, when the floor is supported by the seismic isolation device in this manner, the seismic isolation can be performed very efficiently when the vibration is transmitted to the floor base due to an earthquake or the like.

In the case of a comparatively small earthquake, in which the horizontal sway is the main sway, the lower surface of the floor member and the upper surface of the ring-shaped elastic body are relatively free to move in accordance with the sway transmitted to the floor base. Since the slide and the upper end of the elastic column also move relatively inside the regulation ring and are not regulated at all, the seismic isolation effect can be almost completely obtained.

Further, when the swing becomes large and the upper end of the elastic column comes into contact with the inner circumference of the restriction ring due to the movement, the upper end of the elastic column engages with the edge of the restriction ring,
Relative slide rocking of the upper surface of the ring-shaped elastic body and the lower surface of the floor member beyond this range can be performed within the range of elastic elasticity of the elastic column.

In this way, when the swing is small, there is almost no restriction due to the sliding motion of the ring-shaped elastic body and the floor member, and when it is large, in the range beyond the restriction ring, in addition to the above-mentioned slide, elastic elasticity of the elastic column Can provide effective seismic isolation.

Further, with respect to vertical vibration, the elasticity of the ring-shaped elastic body can ensure seismic isolation.

In addition, in the above, an example using only one ring-shaped elastic body for one seismic isolation device was explained, but one seismic isolation target and one base part were fixedly mounted and mutually slidable facing each other. You may arrange. Of course, in this case, the elastic column is constructed in a corresponding length. There is no difference in the regulation ring.

By the way, when the foundation of a building is supported by the seismic isolation apparatus of the present invention, for example, the corresponding area is dug down, gravel is spread, compacted, and a concrete foundation is placed on it. Then, a plurality of seismic isolation devices of the present invention are vertically and horizontally mounted and arranged at appropriate intervals. As for the method of this attachment, similarly to the above, either the upper surface or the lower surface of the ring-shaped elastic body may be fixed. Furthermore, an elastic column is arranged at the center. Also in this case, either the upper end or the lower end may be the fixed end. Further, depending on which is the fixed end, the arrangement side of the restriction ring is determined as either the upper end side or the lower end side of the elastic column. Then, the appropriate number of concrete boards are placed on the seismic isolation device. That is, as in the case described above,
For example, the concrete plate is supported on the upper surface of the ring-shaped elastic body, and the upper end (face) or the lower end (face) is fixed according to the above selection. Therefore, the upper surface or the lower surface of the ring-shaped elastic body and the lower surface of the concrete plate or the upper surface of the base concrete are slidable, and the non-fixed end of the elastic column is movable within the range of the restriction ring.

Up to the concrete plate, it will be buried below the ground line. Furthermore, a cushion member is arranged around the concrete plate in order to cut an edge from the surrounding ground.

Then, the foundation is constructed on the concrete board.

Further, in the above case, the concrete plate may be omitted and the separately formed basic concrete may be directly supported by the seismic isolation device.

In the above cases, the ring-shaped elastic body and elastic column having the corresponding elasticity and strength are used, and basically the same as when supporting the floor.

Usage of the foundation and concrete for foundation is the same as that of general foundation.

This foundation has the same seismic isolation effect as in the case of the floor member. The mechanism of action is of course the same.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, a ring-shaped elastic body 1 having flat upper and lower surfaces is formed. The ring-shaped elastic body 1 has a main body molded from chloroprene-based synthetic rubber, and a ring-shaped plastic plate 2 having a smooth upper surface is attached to the upper end thereof. Plastic plate 2
Is wider than the main body. In this example, the elasticity and rigidity of the synthetic rubber of the main body were determined to be appropriate for supporting the floor board.

Separately, an elastic column 3 to be arranged in the center of the ring-shaped elastic body 1 is constructed. Similar to the ring-shaped elastic body 1, the elastic column 3 has a main body formed in a cylindrical shape from chloroprene synthetic rubber, and a small diameter column 5 having a collar 4 at the lower end is vertically fixed. To do.

Further, the restriction ring 6 is made of a plastic material.

In this embodiment, since it is constructed as described above, it is suitable to be used for supporting the floors of various buildings while attenuating earthquakes and other shaking (of course, other uses).

In this case, as shown in FIG. 1, the flat square substrate 8 to be fixedly installed on the floor base 7 has an insertion hole 9 for inserting and fixing the lower end of the elastic column 3 in the center thereof in advance. A pedestal 10 provided with and a ring pedestal 12 provided with a ring groove 11 into which the lower end of the ring-shaped elastic body 1 is inserted and fixed around the pedestal 10 are provided so as to project.

Then, the lower end of the elastic column 3 is inserted into the insertion hole 9 on the substrate 8 and fixed by adhesion, and the lower end of the ring-shaped elastic body 1 is inserted into the ring groove 11 and similarly fixed by an adhesive. .
On the other hand, the floor member has the same square shape as the substrate 8 when viewed from the plane.
The restriction ring 6 is fixedly mounted on the lower surface of 13 with its center as the center. This is also fixed with an adhesive. The lower surface of the floor member 13 is assumed to be a smooth surface.

Next, the substrate 8 and the floor member 13 are opposed to each other, the upper surface of the ring-shaped elastic body 1 and the lower surface of the floor member 13 are slidably joined, and the small-diameter pillar 5 at the upper end of the elastic pillar 3 is placed at the center of the restriction ring 6. Correspond to.

On the other hand, the coil springs 14, 14, ... Having extremely low elasticity at the four corners of the base plate 8 and the floor member 13 and very high expansion and contraction performance ...
Join with.

In this way, a number of floor member sets incorporating seismic isolation devices,
It is arranged on the floor base 7 which has been configured to be smooth in the target area in advance. In the above-mentioned floor member set, a cushion member is inserted and disposed at this position, leaving a portion where the outer edge of the installation region, that is, the peripheral wall of the room, which is not installed, is left.

After arranging the floor member set in all areas in this manner, the decorative materials 15, 15 ... Are attached to the respective floor members 13, 13 ... (Decorative material 15,
Needless to say, 15 may be attached on the floor members 13, 13 in advance).

The floor members 13, 13 ... Are arranged in a seismically isolated state on the floor base 7 by the seismic isolation device, so that the floor is easily constructed in a predetermined area.

The seismic isolation device of this embodiment is as described above, and as described above, can be installed extremely easily at a required position.

When the floor is supported by the seismic isolation device in this way, when vibration is transmitted to the floor base 7 due to an earthquake or the like,
The seismic isolation can be performed very efficiently.

In the case of a relatively small earthquake and the main shaking is horizontal shaking, depending on the shaking transmitted to the floor base 7,
The lower surface of the floor member 13 and the plastic plate 2 of the ring-shaped elastic body 1.
Of the elastic column 3 and the small-diameter column 5 of the elastic column 3 relatively move inside the regulation ring 6 and are not regulated at all, so that the seismic isolation effect is almost completely obtained. Obtainable.

Further, when the swing becomes large and the small diameter column 5 of the elastic column 3 comes into contact with the inner circumference of the restriction ring 6 due to the movement, the small diameter column 5 engages with the edge of the restriction ring 6. The upper surface of the ring-shaped elastic body 1 and the floor member that exceed the above
The relative slide swing with respect to the lower surface of 13 can be performed within the range where the elastic column 3 is elastically stretchable.

In this way, when the swing is small, the plastic plate 2 and the floor member 13 of the ring-shaped elastic body 1 with almost no restriction are slid, and when the swing is large, the range beyond the restriction ring 6 is added to the above-mentioned slide motion. Due to the elastic elasticity of the elastic columns 3, effective seismic isolation can be performed.

The elastic column 3 also has a function of returning the floor member 13 deviated from the center to the original position of the center.

Further, with respect to the vibration in the vertical direction, the seismic isolation effect can be secured by the elasticity of the ring-shaped elastic body 1.

[Effect of the Invention] According to the present invention, a floor of a building or a foundation can be easily supported, and when an earthquake or other vibration occurs, vibration or swinging is applied to a member positioned above this. , It is possible to add a seismic isolation effect that significantly blocks. In particular, the seismic isolation device having an extremely large damping rate is obtained by combining both the seismic isolation action by the vertical sliding movement and the elastic isolation of the elastic column.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a schematic sectional view of a seismic isolation device in a state of supporting a floor member, and FIG. 2 is a state in which the floor member is removed from the state of FIG. Schematic plan view,
FIG. 3 is a perspective view of each component of the seismic isolation device. 1 ... Ring-shaped elastic body, 2 ... Plastic plate, 3 ...
Elastic column, 4 ... Collar part, 5 ... Small diameter column, 6 ... Control ring, 7 ... Floor base, 8 ... Substrate, 9 ... Insertion hole, 10 ...
Pedestal, 11 …… Ring groove, 12 …… Ring pedestal, 13 …… Floor member, 14 …… Coil spring, 15 …… Decorative material.

Claims (3)

[Claims] 1. A ring-shaped elastic body which is located between an upper seismic isolation target and a lower base portion, and which is fixed to the former or the latter and fixed to one of the upper surface and the lower surface thereof and slidably joined to the other. An elastic column that is located at a position corresponding to the axis of the ring-shaped elastic body and is fixed to the seismic isolation target or the base portion, and one of the upper end or the lower end thereof, and the other is not fixed, and the seismic isolation target or the base. A seismic isolation device, which is formed on a surface of the elastic column facing the non-fixed end of the elastic column, and a regulation ring configured to regulate a moving range of the non-fixed end of the elastic column within an annular range. 2. The seismic isolation device according to claim 1, wherein a small-diameter column portion is erected coaxially on the non-fixed end of the elastic column. 3. A seismic isolation device according to claim 1, wherein a slide plate wider than the seismic isolation target or the base portion of the ring-shaped elastic body is slidably joined to the surface of the elastic body.