JPH076277B2 - 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.

As a seismic isolation device for a building or the like, there is one in which an elastic material made of laminated rubber is arranged between a foundation and a structure.

No seismic isolation device that supports the foundation itself 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 one of them is located between an upper seismic isolation target and a lower base plate, and the former or the latter and the upper surface or the lower surface thereof. A plurality of elastic bases that are fixed on one side and slidably joined on the other side, the base isolation plate or the base plate, and elastic rods that are fixed at one of the upper end or the lower end and the other is not fixed, and Either the seismic isolation target or the base plate is formed on a surface facing the non-fixed end of the elastic rod, and is configured with a restriction ring for restricting the moving range of the non-fixed end of the elastic rod within an annular range. The second is a seismic isolation device. The second is a plurality of elastic bases whose upper surface is a slide surface fixed upright on the upper surface of the base plate, and the upper surface of the elastic bases is faced to the upper surface of the seismic isolation target so as to be suspended and fixed. A plurality of elastic bases whose bottom surface is a slide surface, Alternatively, the base plate is fixed to one of the upper end or the lower end of the base plate, and the other is fixed to an elastic rod, and the base plate is configured to face either the seismic isolation target or the base plate and the non-fixed end of the elastic rod. And a restriction ring for restricting the range of movement of the non-fixed end of the elastic rod within an annular range.

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.

The following will focus on one of them, and the second will be supplemented after that.

First, the base plate is a plate member for fixing to a basic portion for supporting the seismic isolation target. For example, when supporting a floor, it is arranged on the floor base, when supporting equipment such as a computer, it is arranged on the floor, and when supporting a building foundation, it is arranged on the ground below it. It is a plate member to be arranged on each of the structures serving as a base for supporting the above-mentioned base. In any case, the base plate is a base of the seismic isolation device that supports the seismic isolation target.

The elastic base is composed of, for example, a columnar member having a relatively large diameter whose upper surface and lower surface are flat surfaces and which is composed mainly of synthetic rubber. Further, it is preferable that the upper surface or the lower surface is formed in a T-shape or an inverted T-shape in longitudinal section so that the area of the surface slidingly joined to either the seismic isolation target or the base plate is wide as necessary. Specifically, a circular slide plate having a diameter larger than that of the elastic base is fixedly mounted on the surface to be slide-joined. The circular slide plate may be made of metal or plastic. The surface to be slide-joined is formed as a smooth surface regardless of whether the circular slide plate is fixed and the area is increased as described above.

By the way, the synthetic rubber forming the elastic base is not limited to a specific material, but it is assumed to have appropriate elasticity in consideration of the area of the cross section thereof 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 elastic base and the seismic isolation target or the base plate may be fixed directly or indirectly with something interposed therebetween.

The elastic rod is arranged between a plurality of elastic bases for supporting the seismic isolation target between the seismic isolation target and the base plate, and naturally, should be disposed with the same axial direction as those. . The length of the elastic rod is approximately the same as or slightly lower than the height of the elastic base.

The overall shape of the elastic rod is generally cylindrical, and a small diameter rod is formed at the non-fixed end portion thereof, if necessary. Similar to the elastic base, the elastic rod is made of synthetic rubber as a main material, 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 rod 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 configured on the lower surface of the corresponding seismic isolation target or the upper surface of the base plate,
Suitably it is composed of separately molded ring members which are secured to them. The inner diameter is an appropriate diameter for regulating the horizontal swinging movement range of the non-fixed side end portion of the elastic rod due to vibration such as an earthquake. That is, this diameter is
It should be set to about the horizontal amplitude due to relatively frequent earthquakes. Of course, it is not limited to this. Also, the height of the restriction ring is such that when the maximum allowable amplitude occurs,
It may be determined such that the non-fixed side end of the elastic rod tilted obliquely is locked to the inner circumference of the restriction ring and cannot be easily removed.

Further, the positional relationship between the restriction ring and the plurality of elastic bases has a specific configuration in the case where the restriction ring is fixedly installed on the seismic isolation target side or the base plate side facing the slide end of the elastic base. , In the case of the largest expected earthquake, it should be arranged with sufficient margin so that the outer circumference of the restriction ring does not come into contact with the outer circumference of the elastic base during horizontal swing. Is.

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

Next, the second point will be supplemented. Since this is almost the same as the first one, only different points will be described.

First, since the upper and lower elastic bases are face-to-face slidably joined to each other, it is appropriate to dispose the circular slide plates at the facing ends. The arrangement relationship, the material, and the like are the same as in the case of the one.

Further, in this case, the elastic rod is set to have a height substantially the same as or slightly lower than the height of the pair of elastic bases stacked in two stages.

[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 use 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.

First, one of them will be described below.

For example, when supporting a floor that is a base isolation target with this seismic isolation device, either the upper surface or the lower surface of the plurality of elastic bases is fixed to the lower surface of the floor member or the upper surface of the base plate, and the other is slidable. To join. Here, for the sake of simplicity, it is assumed that the lower surface of the elastic base is fixed to the upper surface of the base plate and the upper surface is slidably joined to the lower surface of the underfloor member. It goes without saying that the elastic base should be mounted between the two in a well-balanced arrangement.

Further, the elastic rod is arranged between the plurality of elastic bases, and the upper end or the lower end thereof is fixedly mounted on the lower surface of the floor member or the upper surface of the base plate. Here, for the same reason as in the case of the elastic base, it is assumed that the lower end is fixed to the upper surface of the base plate.

However, in the restriction ring, the elastic rod in the stationary state is
The bottom 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 and the upper surface of the base plate are connected at appropriate points by the elastic connecting member so that they are not separated unintentionally. It is intended to facilitate portability and other handling.

As described above, by arranging the base plate supporting the floor member on the floor substrate while joining the side portions to each other, the floor surface can be easily configured 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.

For example, in the case of a comparatively small earthquake and horizontal shaking is the main rocking component, the lower surface of the floor member and the upper surfaces of the plurality of elastic bases are moved relative to each other according to the shaking transmitted to the floor base. Of the elastic rod, the upper end of the elastic rod relatively moves inside the regulation ring and is not regulated at all, so that the seismic isolation effect can be almost completely obtained.

Further, when the swing becomes large and the upper end of the elastic rod comes into contact with the inner circumference of the restriction ring due to the movement, the upper end engages with the edge of the restriction ring, and the elastic force beyond this is engaged. The relative slide swing between the upper surface of the base and the lower surface of the floor member can be performed within the range of elastic elasticity of the elastic rod.

In this way, when the swing is small, due to the sliding motion of the elastic base and the floor member with almost no regulation, when it is large, in the range beyond the regulation ring, in addition to the above-mentioned slide, the elastic elasticity of the elastic rod causes Effective seismic isolation can be performed.

Further, with respect to the vibration in the vertical direction, it is possible to ensure the seismic isolation action by the elasticity of the elastic base.

In the second case of the present invention, elastic bases are fixedly installed so as to face each other of the floor member and the base plate that are the base isolation, and the facing portions of the elastic bases are slidably joined to each other. It will be. Everything else is the same as that one. However, if it is placed on the floor base as in No. 1, it is exactly the same as in No. 1 except that the slides at the time of an earthquake are carried out on the mutual sliding surfaces of the upper and lower elastic bases. The effect occurs.

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. This mounting method will be explained by one of them, and similarly to the above, either the upper surface or the lower surface of the elastic base may be a fixed surface. Further, an elastic rod is arranged between them. 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 to be either the upper end side or the lower end side of the elastic rod. 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 by the upper end of the elastic base, and the upper end (face) or the lower end (face) is fixed according to the above selection. Therefore, the upper surface or lower surface of the elastic base 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 rod 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 elastic base and the elastic rods having the corresponding elasticity and strength are used, and basically the same as the case of 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.

First, one embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 1 to FIG. 3, each set of four elastic bases 1, 1, ... Each of the elastic bases 1, 1 ... is formed by molding a chloroprene-based synthetic rubber, and a plastic disc 2 having a flat upper surface and a larger diameter than that of the main body is attached to each upper end. In this example, the elasticity and rigidity of the synthetic rubber of the main body were set to an appropriate level for supporting the floor board.

Separately, an elastic rod 3 to be arranged in the central portion of the above four elastic bases 1, 1 ... Is constructed. The elastic rod 3 is the same as the elastic bases 1, 1 ... The main body is molded into a rod shape from chloroprene-based synthetic rubber, and the collar 4 is attached to the upper and lower ends.
The small-diameter rod 5 provided with is fixed upright.

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

Further, the base plate 7 is made of a plastic plate having a square shape in plan. As shown in FIGS. 1 and 3, the base plate 7 is provided with a small pedestal 9 having an insertion hole 8 for inserting and fixing the lower end of the elastic rod 3 in the center thereof. Pedestal 9
Each one of the large pedestals 11 provided with an insertion hole 10 for inserting and fixing the lower end of the elastic base 1 between the four corner portions and the four corners is projected. Then, as shown in FIGS. 1 and 2, the lower end of the elastic rod 3 is inserted into the insertion hole 8 of the small pedestal 9 and fixed by adhesion, and the four large pedestals 11, 11 ... The lower ends of the elastic bases 1, 1 ... Are inserted into the respective insertion holes 10 and similarly fixed by an adhesive.

It should be noted that the base plate 7 is provided with small holes 16 for connecting the lower ends of coil springs 13, 13 ...

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, however, as shown in FIG. 1, the floor member 12 having a square shape and the same size as the base plate 7 as viewed from above is targeted, and the floor member 14 is separated from the floor substrate 14. Keep it in a quake state.

Therefore, first, the regulation ring 6 is fixedly mounted on the lower surface of the floor member 12 with its center portion as the center. This is fixed with an adhesive. The bottom surface of the floor member 12 is assumed to be a smooth surface.

Next, the base plate 7 and the floor member 12 are opposed to each other, the upper surfaces of the elastic bases 1, 1 ... And the lower surface of the floor member 12 are slidably joined to each other, and the small diameter rod 5 at the upper end of the elastic rod 3 is connected to the restriction ring. Corresponds to the center of 6.

Further, the base plate 7 and the floor member 12 are connected to each other by coil springs 13, 13, ... With very low elasticity and very high expansion and contraction in the vicinity of the middle of the elastic rod 3 and the four sides, which are slightly closer to the sides. The ends of the base plate 7 and the coil springs 13, 13, ... Are inserted into the small holes 16, 16 ,. Similarly, on the floor member 12, small holes are bored at the corresponding positions, and the opposite ends of the coil springs 13, 13 ... Are inserted into these small holes and fixed and bonded with an adhesive.

In this way, as shown in FIG. 1, a large number of floor member sets incorporating seismic isolation devices are arranged on the floor base 14 which has been previously configured to be smooth in the target area. 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 12, 12 ... (Decorative material 15,
Needless to say, 15 may be attached on the floor members 12, 12 in advance).

However, the floor members 12, 12 ... Are arranged in a seismically isolated state on the floor base 14 by the seismic isolation device, and the floor is easily formed in a predetermined area.

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

Further, when the floor is supported by the seismic isolation device as described above, when the vibration is transmitted to the floor base 14 due to an earthquake or the like, the seismic isolation can be performed very efficiently.

In the case of a comparatively small earthquake, in which horizontal sway is the main sway component, the lower surface of the floor member 12 and the elastic disks 1, 1 ... The upper surface of 2 slides relatively freely, and the small-diameter rod 5 of the elastic rod 3 also moves relatively inside the regulation ring 6 and is hardly regulated. Can be obtained.

Further, when the swing becomes large and the small diameter rod 5 of the elastic rod 3 comes into contact with the inner circumference of the restriction ring 6 due to the movement, the small diameter rod 5 is engaged with the edge of the restriction ring 6. However, the upper surfaces of the elastic bases 1, 1 ...
The relative slide swing with respect to the lower surface of the elastic rod 3 can be performed within the range where the elastic rod 3 is elastically stretchable.

In this way, when the swing is small, there is almost no restriction due to the sliding motion of the plastic discs 2 of the elastic bases 1, 1 ... And the floor member 12, and when it is large, the above-mentioned sliding motion is performed in the range beyond the restriction ring 6. In addition to the elastic elasticity of the elastic rod 3, effective seismic isolation can be performed.

The elastic rod 3 also has a function of returning the deviated floor member 12 to its original position.

Further, with respect to the vibration in the vertical direction, the elastic isolation of the elastic bases 1, 1, ... Can secure the seismic isolation action.

Further, the coil springs 13, 13 ... Have an action of preventing the base plate 7 and the floor member 12 from being separated from each other.

Next, the second embodiment of the present invention will be outlined with reference to FIG.

As shown in FIG. 4, a plastic disk 22 having a diameter larger than that of the main body is fixedly provided at one end of each set of eight elastic bases 21, 21 ... The elastic bases 21, 21, ... Have the main body made of chloroprene-based synthetic rubber, as in the above-described embodiments. The elastic bases 21, 21, ... Are used as four pairs of elastic bases 21, 21, ...

Separately, an elastic rod 23 to be arranged in the central portion of the above four pairs of elastic bases 21, 21 ... Is constructed. This elastic rod 23 has its length
The height of the pair of elastic bases 21, 21 is set to be slightly shorter than the height of the elastic bases 21, 21.

The material of the elastic rod 23, the collar portion 24, the small diameter rod 25, the restriction ring 26, the base plate 27, the small pedestal 29, the large pedestal 31, the insertion hole 2
The configurations of 8, 30, the floor member 32, the coil spring 33, and the small hole 36 are the same as those in the above-described embodiments.

In this embodiment, since it is configured as described above, it can be used in exactly the same manner as the above-mentioned embodiments.

Then, as shown in FIG. 4, the seismic isolation device can be attached to the floor member 32, and the seismic isolation device can be held on the floor base 34.

Therefore, on the lower surface of the floor member 32, the regulation ring 26 is fixedly provided around the center thereof, and on the outer side thereof, the elastic bases 21, 21 ... Are associated with the elastic bases 21, 21 ... On the base plate 27. Fix it.

Next, the base plate 27 and the floor member 32 are faced to each other, and the plastic disk 2 of the elastic bases 21, 21 ... Fixedly mounted on the base plate 27.
2 and 22 and the plastic discs 22 and 22 of the elastic bases 21 and 21 fixed to the floor member 32 are slidably joined to each other, and the small diameter rod 25 at the upper end of the elastic rod 23 is attached to the restriction ring 26. Corresponds to the center.

Further, the base plate 27 and the floor member 32 are connected to each other by the coil springs 33, 33, ...

In this way, as shown in FIG. 4, a large number of floor member sets incorporating seismic isolation devices are arranged on the floor base 34 which is previously configured to be smooth in the target area. Further, after being arranged over the entire area, the decorative materials 35, 35 ... Are attached onto the floor members 32, 32.

Thus, the floor members 32, 32 ... Are arranged in a seismically isolated state on the floor base 34 by the seismic isolation device, and the floor is easily constructed in a predetermined area.

The seismic isolation effect of this embodiment is the same as that of the above-described embodiment except that the plastic discs 22, 22 ... of the upper and lower elastic bases 21, 21, ... The action is exactly the same.

Needless to say, other points are the same.

EFFECTS OF THE INVENTION According to the present invention, a floor or a foundation of a building can be easily supported, and when an earthquake or other vibration occurs, vibration or swinging of a member positioned above this is prevented. , 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 motion and the elastic isolation of the elastic rod.

Furthermore, the seismic isolation effect against vertical vibration was also secured.

[Brief description of drawings]

The drawings show embodiments of the present invention. 1 to 3 show one 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 of FIG. FIG. 3 is a schematic plan view showing a state where the floor member is removed from FIG. 3, and FIG. 3 is a perspective view of each component of the seismic isolation device. FIG. 4 shows the second embodiment of the present invention, and is a schematic cross-sectional view of the seismic isolation device with the floor member supported. 1, 21 …… Elastic base, 2, 22 …… Plastic disk, 3,
23 …… elastic rod, 4,24 …… collar part, 5,25 …… small diameter rod,
6,26 ... Regulation ring, 7,27 ... Base plate, 8,10,
28,30 …… Insertion hole, 9,29 …… Small pedestal, 11,31 …… Large pedestal, 12,32 …… Floor member, 13,33 …… Coil spring, 14,34
…… Floor base, 15, 35 …… Decorative material, 16, 36 …… Small holes.

Claims (4)

[Claims] 1. A plurality of elastic bases located between an upper seismic isolation target and a lower base plate, fixed to the former or the latter, and fixed to one of the upper surface and the lower surface of the former and slidably joined to the other. The seismic isolation target or the base plate, and one of the upper end or the lower end of the elastic rod that is fixed and the other is not fixed, and either the seismic isolation target or the base plate faces the non-fixed end of the elastic rod. A seismic isolation device that is configured as a surface and that is configured with a restriction ring that restricts the moving range of the non-fixed end of the elastic rod within an annular range. 2. The seismic isolation device according to claim 1, wherein a small diameter rod is coaxially provided upright on the non-fixed end of the elastic rod. 3. The seismic isolation device according to claim 1, wherein a circular slide plate having a diameter larger than that of the elastic base is slidably joined to a surface of the elastic base slidably joined to the seismic isolation target or the base plate. 4. A plurality of elastic bases having an upper surface standingly fixed to the upper surface of the base plate as a sliding surface, and a lower surface facing the upper surface of the elastic base and being fixed by hanging to an upper surface of the seismic isolation object above. A plurality of elastic bases, the seismic isolation target or the base plate, and an elastic rod that fixes one of the upper end and the lower end of the seismic isolation target, and the other is not fixed, and the seismic isolation target or the base plate A seismic isolation device comprising a surface facing the non-fixed end of the rod and a restriction ring for restricting the range of movement of the non-fixed end of the elastic rod within an annular range.