JPH10110554A - Base isolation device of building or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the shear force to be applied to a building or the like, and to improve the service life of the coating material. SOLUTION: A base isolation device 1 supports the vibration in the transverse direction generated based on an earthquake in a base isolation manner while the load of a building, etc., is supported between a lower part on the building, etc., and a foundation part 4 to support the load of the building, etc. The base isolation device is provided with a lower support plate 12 arranged on the foundation part 4 in the horizontal direction, and an upper support plate 11 arranged on an upper surface of the lower support plate 12 opposite to the lower support plate 12, a plurality of recessed parts 14 are provided at least on one of a lower surface of the upper support plate 11 and an upper surface of the lower support plate 12 which are opposite to each other, and the coating material 13 with small sliding resistance is applied to reduce the sliding resistance between the upper support plate 11 and the lower support plate 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a building, a structure,
The present invention relates to a seismic isolation device for a building or the like that supports a mechanical device or the like.

[0002]

2. Description of the Related Art A conventional seismic isolation device for supporting a building, a structure, a mechanical device, etc. (hereinafter referred to as a building) will be described with reference to FIG. 01
Is the foundation part 04 standing on the foundation ground 010 and the building 0
6 and the floor member 05.

FIG. 5 shows the seismic isolation device 01 in detail. The seismic isolation device 01 includes a plurality of iron plates 02 and a plurality of elastic bodies (rubbers) 03 disposed above and below the respective iron plates 02. The size is arbitrarily selected according to the design conditions of the building. Then, the load of the building 06 is supported by the seismic isolation device 01, and lateral vibration such as an earthquake transmitted from the foundation ground 010 is absorbed by the elastic deformation of each elastic body 03 of the seismic isolation device 01 in the lateral direction, Building 06 is supported by seismic isolation.

[0004] The seismic isolation device 01 includes a plurality of iron plates 0.
2 and a plurality of elastic bodies (rubbers) 03. The reason for this configuration is that, by sandwiching the iron plate 02 in the middle of each elastic body 03, the amount of deformation of each elastic body 03 is dispersed and the elastic body 03 is not largely deformed.

[0005]

As described above, the conventional seismic isolation device 01 is such that when the building 06 laterally vibrates due to an earthquake or the like,
Each elastic body 03 is elastically deformed in the lateral direction to absorb the lateral load of the building 06, but at this time, there is a problem that a large shear force acts on the building 06 due to the lateral load. The present invention has been made in view of the above problems, and an object thereof is to provide a seismic isolation device for a building or the like that can reduce the shearing force acting on the building or the like and prolong the life of the coating material. The point is to try.

[0006]

In order to achieve the above object, the present invention provides a method for supporting a load of a building or the like between a lower part of the building or the like and a foundation supporting the load of the building or the like. A seismic isolation device that supports a horizontal vibration generated based on an earthquake or the like while supporting a lower support plate horizontally disposed on the base portion and a lower support plate on an upper surface of the lower support plate. An upper support plate disposed opposite to the plate, a plurality of recesses are provided on at least one of the lower surface of the upper support plate and the upper surface of the lower support plate facing each other, and a coating material having a small sliding resistance is applied. Thus, the sliding resistance between the upper support plate and the lower support plate is reduced (claim 1).

Further, according to the present invention, while supporting a load of a building or the like between a lower part of the building or the like and a foundation supporting the load of the building or the like, horizontal vibration generated by an earthquake or the like is eliminated. A seismic isolation device for supporting earthquakes, comprising: a lower support plate which is horizontally disposed on the base portion, has concave portions formed at a plurality of positions on an upper surface, and has a coating material having low sliding resistance applied to the upper surface. An upper support plate arranged opposite to the upper surface of the lower support plate, a lubricating oil supply means for forming an oil film in a gap between the lower support plate and the upper support plate, and an earthquake sensor for detecting vibration such as an earthquake, A control device for operating the pump of the lubricating oil supply means based on the detection signal from the seismic sensor, and reducing the sliding resistance between the upper support plate and the lower support plate by the recess, the coating material, and the oil film. (Claim 2).

In the seismic isolation device for a building or the like according to the first and second aspects, an elastic body may be interposed in at least one of the intermediate layer of the lower support plate and the intermediate layer of the upper support plate. 3).

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) Next, a seismic isolation device for a building or the like according to the present invention is shown in FIG.
A description will be given with reference to the first embodiment shown in FIGS. FIG.
(A) 1 is a seismic isolation device, 11 is an upper support plate horizontally arranged below the floor member 5, 12 is a lower support plate horizontally arranged on the foundation 4, and the upper support plate 11 And the upper surface of the lower support plate 12 face each other to form a sliding surface.

Reference numeral 13 denotes a coating material having a low sliding resistance applied to the upper surface of the lower support plate 12.
For example, Teflon resin is used. Reference numeral 14 denotes a concave portion provided at a plurality of positions on the upper surface of the lower support plate 12. The recesses 14 are provided at a constant pitch P, for example, as shown in FIG. The pitch P is about 1.2 d to 1.5 d with respect to the diameter d of the recess 14. The shape of the recess 14 is
The shape may be changed to a shape other than a circle depending on a processing method.

FIG. 1B shows an example in which a concave portion 14 is provided on the lower surface of the upper support plate 11 and a coating material 13 is applied to the lower surface of the upper support plate 11. FIG. 1C shows an example in which a concave portion 14 is provided on the lower surface of the upper support plate 11 and the upper surface of the lower support plate 12, and the coating material 13 is applied to the lower surface of the upper support plate 11 and the upper surface of the lower support plate 12. Is shown.

The seismic isolation device 1 is interposed between a floor member 5 and a foundation 4 of a building (see 06 in FIG. 4). Next, the operation of the seismic isolation device 1 shown in FIG. 1 will be specifically described. The seismic isolation device 1 supports a load of a building or the like between a lower part of the building or the like and a foundation 4 that supports a load of the building or the like. In this state, when an earthquake occurs and lateral vibration is transmitted from the foundation 4 to the seismic isolation device 1, the upper support plate 11 and the lower support plate 12 move laterally while sliding. At this time, at least one of the lower surface of the upper support plate 11 and the upper surface of the lower support plate 12 is provided with a plurality of concave portions (non-contact portions) 14 and coated with a coating material 13 having low sliding resistance. The sliding resistance between the support plate 11 and the lower support plate 12 is reduced, and the shear force acting on the building is reduced.

Further, the frictional heat generated at the time of the sliding is radiated from each concave portion (non-contact portion) 14 in the plate thickness direction, and the temperature rise of the coating material 13 is suppressed, so that the life of the coating material 13 is prolonged. . Second Embodiment Next, a seismic isolation device for a building or the like according to the present invention is shown in FIG.
This will be described with reference to a second embodiment shown in FIG. The same portions as those in the first embodiment are denoted by the same reference numerals, and the description of the overlapping portions will be omitted.

In this embodiment, a lubricating oil supply means for forming an oil film in a gap between the upper support plate 11 and the lower support plate 12, a seismic sensor for detecting a vibration such as an earthquake, and a detection from the seismic sensor And a control device for operating the pump of the lubricating oil supply means based on the signal. 16 is an oil discharge hole for discharging lubricating oil from the end of the lower support plate 12, 17
Is an oil supply hole for supplying lubricating oil to the inner surface of the central portion of the lower support plate 12, and 18 is an oil supply pipe connected to the oil supply hole 17, of which the expansion / contraction portion is formed near the lower support plate 12. ing.

Reference numeral 19 denotes a return pipe from the oil drain hole 16 to the oil storage tank 22, and a stretchable portion is formed in the return pipe 19 near the lower support plate 12. Reference numeral 20 denotes a lubricating oil pressure control valve provided in the middle of the return pipe 19, and reference numeral 21 denotes an oil supply pipe 18.
The lubricating oil supply pump provided in the middle of
8 and a lubricating oil storage tank connected to the return pipe 19, 2
3 is a seismic sensor for detecting lateral vibration such as an earthquake, 24 is a control device for operating the lubricating oil supply pump 21 based on a detection signal from the seismic sensor 23, and 25 is an upper support plate 1.
An O-ring seals the lubricating oil supplied to the sliding surface between the lower support plate 1 and the lower support plate 12. A stopper ring 26 is provided at an end of the upper support plate 11. Is to be restricted.

The other structure is the same as that of the first embodiment. Next, the operation of the seismic isolation device 1 shown in FIG. 2 will be specifically described. When a lateral vibration such as an earthquake is detected by the earthquake sensor 23, a detection signal obtained at that time is sent to the control device 24, a start signal is sent from the control device 24 to the supply pump 21, and the supply pump 21 is started, and the lubricating oil is started. The oil storage tank 2
2 → supply pump 21 → oil supply pipe 18 → oil supply hole 17 → supply to the sliding surface between upper support plate 11 and lower support plate 12.

The lubricating oil is sealed by an O-ring 25, and after passing through the sliding surface, is collected in the oil drain hole 16 → the pressure regulating valve 20 → the return pipe 19 → the oil storage tank 22. The pressure adjusting valve 20 is provided for adjusting the sliding surface pressure. If the supply pump 21 is regularly operated so that the oil film does not run out on the sliding surface between the upper support plate 11 and the lower support plate 12, the upper support plate 11 can be operated even when an earthquake or the like occurs.
It is possible to reduce the sliding resistance between the support member 12 and the lower support plate 12.

As described above, the upper support plate 11 and the lower support plate 1
Since the lubricating oil is supplied to the sliding surface between the upper support plate 11 and the lower support plate 12, even if the base portion 4 laterally vibrates due to an earthquake or the like, the sliding resistance between the upper support plate 11 and the lower support plate 12 is almost eliminated. The shear force acting on the surface is greatly reduced. Third Embodiment Next, a seismic isolation device for a building or the like according to the present invention is shown in FIG.
A description will be given with reference to a third embodiment shown in FIGS. The same portions as those in the first embodiment are denoted by the same reference numerals, and the description of the overlapping portions will be omitted.

In this embodiment, at least one of the intermediate layer of the lower support plate 12 and the intermediate layer of the upper support plate 11 of the seismic isolation device 1 is provided with an elastic body (rubber plate) 15. That is, in FIG. 3A, an elastic body (rubber plate) 15 is interposed in the intermediate layer of the lower support plate 12. In FIG. 3B, an elastic body (rubber plate) 15 is interposed in the intermediate layer of the upper support plate 11.

The elastic body (rubber plate) 15 is made of, for example, fluorine rubber, silicon rubber or the like, and has a large surface frictional resistance, so that it does not slide on the upper or lower surface of the elastic body 15. On the other hand, since the frictional resistance of the sliding surface between the lower support plate 12 and the upper support plate 11 coated with the coating material 13 is small, sliding occurs on this sliding surface. Other configurations are the same as those of the first embodiment.

Next, the operation of the seismic isolation device 1 shown in FIG. 3 will be specifically described. An elastic body (rubber plate) 15 is interposed in at least one of the middle layer of the lower support plate 12 and the middle layer of the upper support plate 11 of the seismic isolation device 1, and the lower support plate 12 and the upper support plate 11 Even if the parallelism deviates slightly, the elastic body (rubber plate) 15 is elastically deformed, and the lower support plate 12 and the upper support plate 1 are deformed.
1 is maintained, and the lower support plate 12 and the upper support plate 11 abut uniformly, so that the lower support plate 12 and the upper support plate 11 slide smoothly.

This elastic body (rubber plate) 15 may be interposed in the intermediate layer of the lower support plate 12 or the intermediate layer of the upper support plate 11 of the first or second embodiment. Is performed.

[0023]

As described above, according to the present invention, a horizontal structure generated based on an earthquake or the like while supporting the load of a building or the like between the lower part of the building or the like and the foundation supporting the load of the building or the like is provided. A seismic isolation device for seismically isolating and supporting a vibration in a direction, comprising: a lower support plate horizontally disposed on the base portion; and an upper support disposed on the upper surface of the lower support plate so as to face the lower support plate. A plurality of recesses on at least one of the lower surface of the upper support plate and the upper surface of the lower support plate facing each other, and applying a coating material having low sliding resistance to the upper support plate and the lower support plate. , The shearing force acting on a building or the like can be reduced.

Further, the frictional heat generated during the sliding is radiated from each concave portion (non-contact portion) in the thickness direction to suppress the temperature rise of the coating material, thereby extending the life of the coating material. Further, as described above, while supporting the load of the building or the like between the lower part of the building or the like and the foundation supporting the load of the building or the like, the present invention eliminates the lateral vibration generated due to an earthquake or the like. A seismic isolation device for supporting earthquakes, comprising: a lower support plate which is horizontally disposed on the base portion, has concave portions formed at a plurality of positions on an upper surface, and has a coating material having low sliding resistance applied to the upper surface. An upper support plate arranged opposite to the upper surface of the lower support plate, a lubricating oil supply means for forming an oil film in a gap between the lower support plate and the upper support plate, and an earthquake sensor for detecting vibration such as an earthquake, A control device for operating the pump of the lubricating oil supply means based on the detection signal from the seismic sensor, and the sliding resistance between the upper support plate and the lower support plate is reduced by the recess, the coating material, and the oil film. So shear acting on buildings, etc. It can be further reduced.

In addition, an elastic body is interposed in at least one of the intermediate layer of the lower support plate and the intermediate layer of the upper support plate. Even if the parallelism between the lower support plate and the upper support plate is slightly shifted, the elastic body Is elastically deformed to maintain the parallelism between the lower support plate and the upper support plate and uniformly contact the lower support plate and the upper support plate, so that the lower support plate and the upper support plate slide smoothly. Can be moved.

[Brief description of the drawings]

FIG. 1A is a vertical sectional side view showing a first embodiment of a seismic isolation device for a building or the like of the present invention, FIG. 1B is a vertical sectional side view showing another example of the first embodiment, FIG. () Is a vertical sectional side view showing still another example of the first embodiment, and (d) is an explanatory view showing a pitch of the concave portions.

FIG. 2 is a system diagram showing a second embodiment of the seismic isolation device of the present invention.

FIG. 3A is a vertical sectional side view showing a third embodiment of the seismic isolation device for buildings and the like according to the present invention, and FIG. 3B is a vertical sectional side view showing another example of the third embodiment.

FIG. 4 is a side view showing a conventional seismic isolation device for a building or the like.

FIG. 5 is a vertical sectional side view showing details of the seismic isolation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seismic isolation device 4 Base part 5 Floor member of building 11 Upper support plate 12 Lower support plate 13 Coating material 14 Depression 17-22 Lubricating oil supply means 21 Pump 23 Earthquake sensor 24 Control device

Claims (3)

[Claims] 1. A seismic isolation support for lateral vibration generated due to an earthquake or the like while supporting a load of a building or the like between a lower part of the building or the like and a foundation supporting the load of the building or the like. A seismic isolation device, comprising: a lower support plate horizontally disposed on the base portion; and an upper support plate disposed on the upper surface of the lower support plate so as to face the lower support plate. A plurality of recesses are provided on at least one of the lower surface of the upper support plate and the upper surface of the lower support plate, and a coating material having a small sliding resistance is applied to reduce the sliding resistance between the upper support plate and the lower support plate. Seismic isolation device for buildings, etc. 2. While supporting the load of a building or the like between a lower part of the building or the like and a foundation supporting the load of the building or the like, seismic isolation is supported for lateral vibration generated due to an earthquake or the like. A seismic isolation device, comprising: a lower support plate which is horizontally disposed on the base portion, has concave portions formed at a plurality of locations on an upper surface, and has a lower surface coated with a coating material having a low sliding resistance; An upper support plate arranged opposite to the upper surface of the vehicle, lubricating oil supply means for forming an oil film in a gap between the lower support plate and the upper support plate, a seismic sensor for detecting vibration such as an earthquake, and the seismic sensor A control device for operating the pump of the lubricating oil supply means based on the detection signal from the controller, and the sliding resistance between the upper support plate and the lower support plate is reduced by the recess, the coating material, and the oil film. Seismic isolation devices for buildings, etc. 3. The seismic isolation device for a building or the like according to claim 1, wherein an elastic body is interposed in at least one of the intermediate layer of the lower support plate and the intermediate layer of the upper support plate.