JPH0715226B2 - Seismic isolation device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a seismic isolation device that supports and supports the foundation of various buildings and the floors within the buildings while protecting them from earthquakes and other vibrations.

[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.

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 not possible to sufficiently deal with horizontal shaking due to the mechanism.

Similarly, the latter cannot be freely applied to various objects.

It is an object of the present invention to provide a device that can provide a seismic isolation effect to various seismic isolation targets such as supporting the foundation of the building itself, in addition to the floor of the building, while easily supporting the seismic isolation target. To do.

[Means for Solving the Problems] The gist of the configuration of the present invention is that a tapered concave portion having a large diameter is formed in the center of two facing slide plates from the middle toward the mutual facing direction. Then, each end of the elastic columnar body is inserted and coupled to the bottom side of each tapered recess, and a rib is formed around the projection formed on the back surface of each tapered recess on the back surface of each slide plate. It is a seismic isolation device.

As the slide plate, various shapes such as a square, a polygon or a circle can be freely adopted when viewed from the plane direction, but a circle having no difference in any direction in the horizontal direction is most suitable. . The slide plate can be molded of plastic or made of metal, depending on the weight of the object supported thereby.

The tapered concave portion is configured such that the bottom side thereof is a concave portion of a straight peripheral wall so that the end portion of the elastic columnar body is fitted and fixed thereto, and the outside thereof is as described above. , The slide plates are formed in a tapered shape that expands in the facing direction. How much angle to expand,
It is determined by how much the relative swing range of facing slide plates should be recognized. If necessary, a coupling means for coupling the end of the elastic columnar body is formed on the bottom side of the tapered recess.

A smooth surface is formed between the facing surfaces of the slide plates. This can be constructed by coating the surface with a tetrafluoroethylene resin or the like.

The rib can be configured in various ways. For example, a plurality of concentric circular ring-shaped ribs centering on the protrusion may be formed radially from or in addition to the protrusion. The height of the outer end of the rib is preferably equal to or slightly lower than that of the protrusion.

Further, it is suitable that the elastic columnar body has a cylindrical shape having a large diameter at both ends and a small diameter in the middle. If necessary, attach bolts that extend in the axial direction to both ends. Alternatively, it constitutes another coupling means.

The elastic columnar body is mainly composed of a suitable rubber material. The material is not limited to a particular material, but synthetic rubber having appropriate elasticity is preferable.
It is appropriate to prepare those having various elasticity in appropriate stage divisions and use them properly according to the weight of the object supported by this.

Further, when the elastic column is set on the slide plate and no load is applied between the slide plates,
It is suitable to configure the length such that there is a slight gap between the facing portions.

[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,
Alternatively, it can be used to support the foundation of the building itself, dampen earthquakes and other sway, and protect the object.

For example, in the case of supporting the floor, when the rib is formed at the same height as the protrusion, behind the lower slide plate, that is,
The end faces of the protrusions and the outer ends of the ribs are placed on the floor substrate while being in contact with the floor substrate as it is, and the floor plate is placed on the other side behind the slide plate, that is, the end faces of the protrusions and the outer ends of the ribs. To support. It is preferable that the protrusion and the floor board material are bonded and fixed with an adhesive or the like. Further, a rubber sheet is interposed between the floor base and the projections and ribs of the lower slide plate, if necessary.

When the rib is configured to be lower than the protrusion, a rubber sheet having a notch corresponding to the protrusion is joined to the back of the lower slide plate, and then the rib is placed on the floor base. On the other hand, a recess having a shape corresponding to the protrusion is formed at a corresponding position on the upper slide plate and the lower surface of the floor plate, and the floor plate is supported while the protrusion is fitted therein.

Thus, the floor boards are supported by the seismic isolation device of the present invention at appropriate intervals. A desired decorative material is attached to the upper surface of the floor board material to complete the floor. It should be noted that it is necessary to leave a slight gap at the outer edge of the installation area of the floor plate, that is, a position adjacent to the wall surface, and to dispose a cushion member in the gap.

Therefore, the seismic isolation device of the present invention can be installed in a required position very easily.

In addition, when the floor is supported by this seismic isolation device, even when vibration is transmitted to the floor base due to an earthquake or the like,
Since the slide plates are slidably coupled to each other and the elastic plates are coupled to each other, the sliding motion of the sliding plates in response to the vibration or swing causes the vibration or swing to be substantially It will be cut off here.

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 arranged vertically and horizontally at appropriate intervals. Then, the appropriate number of concrete boards are placed on the seismic isolation device. As in the case described above, the foundation concrete and the concrete plate are connected and supported by the projections and ribs behind the upper and lower slide plates, respectively. Up to the concrete board will be buried below the ground line. A cushion member is provided 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 foundation concrete separately formed may be directly supported behind the slide plate on the seismic isolation device.

In both of the cases described above, basically the same as the case of supporting the floor, in addition to the use of the elastic columnar body having the required elasticity and strength, which constitutes the slide plate of corresponding strength.

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

In this way, a foundation having a seismic isolation effect can be easily obtained.

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

As shown in FIGS. 1 to 3, two tapered slide plates 1 and 1 facing each other are provided with tapered recesses 2 which extend from approximately the middle to the mutually facing directions.
The slide plates 1 and 1 are circular in plan view, and the tapered recesses 2 and 2 are circular in plan. As described above, the tapered recessed portions 2 and 2 are formed as the tapered portion 3 that expands in the facing direction from the middle portion thereof, and are formed as the straight cylindrical portion 4 from the bottom portion to the middle portion.

Then, the connecting ends 6, 6 of the elastic columnar bodies 5, 5 are inserted into the cylindrical portions 4 formed at the bottoms of the tapered recesses 2 of the slide plates 1, 1 and fixed thereto by an adhesive. . The elastic column 5 is made of a chloroprene-based synthetic rubber, and has a diameter smaller than that of the connecting end portions 6 in the middle. Its elasticity and rigidity corresponded to the floor board support in this example. The length of the elastic column 5 is set so that there is a slight gap between the slide plates 1 and 1 in the unloaded state as shown in FIGS. 1 and 2.

A smooth surface 7 is formed on each surface of the slide plates 1 and 1 facing each other. In this example, the smooth surface 7 is formed by coating a tetrafluoroethylene resin.

Further, on the back side of the slide plates 1 and 1, a back side of each of the tapered concave portions 2 is projected, and a tapered circular projection 8 is formed up to near the middle thereof. As shown in FIG. 3, around the circular protrusions 8 and 60,
Ribs 9, 9 ... Which extend in the radial direction to the peripheral edge of the slide plate 1 at angular intervals of ° are formed. The ribs 9, 9 ... Stand up from the rear surface of the slide plates 1, 1 and their height is slightly lower than that of the circular protrusions 8, 8.

In this embodiment, since it is configured 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). Moreover, it can be easily adapted to any floor and its installation is easy.

First, as in the general case, a flat floor base 10 is formed in a target area of the floor. And, the floor which adopts this seismic isolation device has a corresponding number of floor board materials 11, 11 ...
Are to be stretched, and the decorative materials 12, 12 ... Are affixed thereon, and each of the floor plate materials 11, 11 ... Is supported by the seismic isolation device at several locations. .

As shown in FIG. 2, in the floor plate members 11, 11, ..., Coupling recesses 13, 13, ... With which the tips of the circular projections 8 can be fitted in advance on the lower surface on which the seismic isolation device is to be set. Is formed. The depth of the coupling recesses 13, 13 ... Is matched with the height from the tip of the circular projection 8 to the outer ends of the ribs 9, 9.
Then, the circular projections 8, 8 ... Of the plurality of seismic isolation devices are fitted into the coupling recesses 13, 13 ... on the lower surface of the floor plate materials 11, 11 ,.
Fix the bond with glue. After this, a rubber sheet 14 is further joined to the lower part of the slide plate 1 below each seismic isolation device. In the rubber sheets 14, 14, ... A circular hole 15 having a diameter slightly larger than the diameter of the circular protrusion 8 is bored in the central portion, and the thickness thereof is from the tip of the circular protrusion 8 to the rib 9 , 9 ... should be slightly thicker than the height of the outer edges. Then, the rubber sheets 14, 14, ... Are joined to the lower surface of the lower slide plate 1 while fitting the circular protrusions 8 in the circular holes 15 thereof. The rubber sheets 14, 14 ... Are previously set on the lower surface side of the lower slide plate 1 as described above, and then the seismic isolation device is arranged on the floor plate members 11, 11 ... As described above. Needless to say,

After that, as shown in FIG. 2, with the seismic isolation device facing downward, the floor plate members 11, 11, ... Are sequentially arranged on the floor base 10 to form a floor. At this time, since the rubber sheets 14, 14 ... Reduce due to the weight of the seismic isolation device and the floor plate materials 11, 11, ..., The end faces of the circular protrusions 8 of the slide plates 1, 1, ... To reach. The lower slide plates 1, 1, ...
By the action of ..., It will not move easily even by vibration or swing.

The floor plate members 11, 11 ... Are to be provided with a cushion member at the outer edge of the installation region, that is, a part of the peripheral wall where a part of the peripheral wall is not installed, and the cushion member is provided at this position.

After arranging the floor plate materials 11, 11 ... in the whole area in this manner, the decorative materials 12, 12 ... are attached thereon (the cosmetic materials 12, 12 ... are attached in advance on the floor plate materials 11, 11 ... Needless to say, too).

However, the seismic isolation device of this embodiment can be installed in a required position very easily.

Further, when the floor plate members 11, 11 ... Are supported by the seismic isolation device as described above, even when vibration is transmitted to the floor base material 10 due to an earthquake or the like, the slide plates 1 and 1 are They face each other with a slight gap, and when a load of a certain amount or more is applied, the sliding edges 7, 7 are in slidable contact with each other, and they are connected by the elastic columnar body 5. Therefore, by mutually freely slidingly moving in response to vibrations or rocking, those vibrations or rocking are blocked here, and the upper slide plates 1, 1 ... It is not transmitted to the floor plate materials 11, 11 ...

If the tapered portion 3 of the tapered concave portion 2 is suddenly expanded in the facing direction and the diameter thereof is made sufficiently large, the slidable range can be made sufficiently large, and a large vibration or swing can be surely dealt with.

[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.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a partially cutaway schematic front view, Fig. 2 is a schematic front sectional view showing a state of supporting a floor board, and Fig. 3 is a schematic plan view. It is a figure. DESCRIPTION OF SYMBOLS 1 ... Sliding plate, 2 ... Tapered concave part, 3 ... Tapered part, 4
... tubular portion, 5 ... elastic columnar body, 6 ... coupling end portion, 7 ... smooth surface, 8
… Circular protrusions, 9… Ribs, 10… Floor bases, 11… Floor board materials, 1…
Decorative material, 13 ... coupling recess, 14 ... rubber sheet, 15 ... circular hole.

Claims (1)

[Claims] 1. A tapered recess having a large diameter from the middle toward the mutual facing direction is formed at the center of each of the two facing slide plates, and an elastic columnar member is provided on the bottom side of each tapered recess. A seismic isolation device in which each end is inserted and coupled, and a rib is formed on the back surface of each slide plate around a projection formed on the back surface of the tapered recess.