JP2001049895A - Laminated rubber supporter for vibration isolation building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily install a drain pipe even when a vibration isolation building has a low underfloor section such as a detached house, and to reduce cost by omitting a part of the drain pipe. SOLUTION: A vertical through-hole 27 having a diameter approximately the same as that of a drain pipe 30 for the building is formed, a protective layer or a protective cover 28 having excellent corrosion resistance is joined with the internal surface of the through-hole 27, and the through-hole 27 formed into the laminated rubber supporter 20 is utilized as a part of a drain pipe 32 by connecting the flexible drain pipe 30 at the upper end of the through-hole 27 while the lower end of the through-hole 27 is joined with a drainage passage or the drain pipe 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismically isolated building which is constructed by alternately laminating rubber layers and reinforcing plates and joining flange members to upper and lower end surfaces, and used for seismically isolating the building. A laminated rubber bearing.

[0002]

2. Description of the Related Art Laminated rubber is used as a support for supporting various structures including buildings in a seismic isolation or vibration isolation manner. In buildings built on foundations and precision equipment installed on mounting stands, it is necessary to minimize the transmission of external vibrations caused by earthquakes and passing vehicles, and to attenuate the transmitted vibrations as early as possible. Requested. Also, when protecting structures such as buildings from earthquakes, and protecting structures requiring high safety and precision, such as nuclear facilities, computers, semiconductor manufacturing facilities, and electron microscopes, from vibrations, In addition to blocking large vibrations, it is also required to block small vibrations. In order to respond to such demands and to elastically support various structures so that they can be isolated or isolated, the laminated rubber bearing is used.

This laminated rubber bearing for seismic isolation has a structure in which a rubber layer and a reinforcing plate such as a metal or a hard plastic plate are alternately and integrally laminated, and upper and lower end surfaces thereof are used for mounting. Are fixed. Such a laminated rubber bearing has a high spring constant in the longitudinal direction,
It has a low spring constant in the horizontal direction (horizontal direction), and the vertical / horizontal spring constant ratio usually has a large value of 800 or more.

On the other hand, in recent seismic isolation buildings, the above-described laminated rubber bearing is installed under the floor of the building to support the building on the foundation. In such a base-isolated building, the building and the ground are relatively displaced during an earthquake. Therefore, a flexible (flexible) drain pipe is used as a drain pipe installed in a building to absorb the displacement of the building.

[0005]

However, in a conventional seismic isolation building of this type, in the case of a building with a low underfloor height, such as a detached house, a height for absorbing the displacement of the building is required. There are many cases where the area cannot be secured,
There is a disadvantage that the length of the underfloor portion of the drainage pipe cannot be made long enough to absorb the displacement of the building. As a method to cope with this, it is conceivable to use a large number of thin and bendable drainage pipes. However, this will complicate the construction and increase the cost.

The present invention has been made in view of such technical problems, and an object of the present invention is to make it possible to easily attach a drain pipe even under a low floor, and to omit a part of the drain pipe. Another object of the present invention is to provide a laminated rubber bearing for a base-isolated building, which can reduce costs.

[0007]

Means for Solving the Problems The present invention (claim 1) provides:
In order to achieve the above object, in a laminated rubber bearing for a seismic isolation building in which a rubber layer and a reinforcing plate are alternately laminated and flange members are joined to upper and lower end surfaces, the diameter is substantially the same as the drain pipe of the building to be supported. And a protective layer or cover made of rubber or plastic having excellent corrosion resistance is bonded to the inner surface of the vertical through hole, and a flexible drain pipe is provided at the upper end of the vertical through hole. By connecting and connecting the lower end of the vertical through-hole to a drain passage or a drain pipe, the vertical through-hole formed inside the laminated rubber bearing is used as a part of a drain pipe. I do.

According to the invention of claims 2 to 5, in addition to the above-mentioned structure, the building to be supported is a house, a structure installed under the floor of the house, a structure installed between the building and the foundation, and a building. The above-mentioned object is achieved more efficiently by having a structure having a plurality of layers and being provided between layers, or a structure in which the drainage pipe is a plastic pipe such as a vinyl chloride pipe.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an elevational view schematically showing a building using a laminated rubber bearing for a base-isolated building to which the present invention is applied, and FIG. 2 is a horizontal view of the laminated rubber bearing for a base-isolated building in FIG. FIG. 3 is a longitudinal sectional view showing a state without displacement, and FIG.
It is a longitudinal cross-sectional view which shows the laminated rubber bearing for a base-isolated building in the horizontal displacement state. In FIG. 1, a seismic isolation building 10 is seismically isolated and supported by a plurality of laminated rubber bearing members 20 installed under the floor. In the illustrated example, the underfloor is formed between the floor 11 of the building 10 and the upper surface of the foundation 12 constructed under the ground, and each laminated rubber bearing body 20 is formed between the floor 11 and the foundation 12. It is installed in between. In addition, the code | symbol 13 illustrates the ground.

At least one of the plurality of laminated rubber bearing members 20 in FIG. 1 has a structure which also serves as a part of a drainage pipe of a seismic isolation building 10 as shown in FIGS. FIG.
3 and FIG. 3, the building 10 is seismically isolated and supported by a laminated rubber bearing member 20 attached between the floor 11 and the foundation 12 of the building. The laminated rubber bearing body 20 includes flange members 22 on upper and lower end surfaces of a cylindrical laminated rubber portion 21.
The laminated rubber portion 21 has a structure in which a rubber layer 24 and a reinforcing plate 25 such as a metal or hard plastic plate are alternately and integrally laminated. In the example shown in the figure, the laminated rubber bearing body 20 connects the upper and lower flange members 22 and 23 to the building 10 (the floor 1 thereof).
The building 10 is attached to the base 12 in a state of being seismically isolated and supported by fastening to the foundation 12 with bolts 26. As described above, such a laminated rubber bearing body 20 has:
It has a high spring constant in the vertical direction and a low spring constant in the horizontal direction (horizontal direction). Usually, the vertical-horizontal spring constant ratio is a large value of 800 or more.

In FIGS. 2 and 3, a vertical through hole 27 is formed in the center of the laminated rubber support 20 so as to penetrate the laminated rubber portion 21 and all of the upper and lower flange members 22 and 23. A protective layer or protective cover 28 of rubber or plastic having excellent corrosion resistance is fixedly attached to the entire inner surface (inner diameter surface) of the vertical through hole 27. Therefore, a flexible drain pipe 30 is connected to the upper end of the vertical through hole 27. This drainage pipe 30
Is used in the base-isolated building 10, for example, a pipe of vinyl chloride is used. And the drain pipe 30
Are connected in a hermetically sealed state via a fastener 31 which is bolted to the upper flange member 22, so that the vertical through holes 27 covered with a protective layer (or protective cover) 28 are provided.
Is fixed so as to communicate in a sealed state with respect to.

The protective layer (or protective cover) 28 having excellent corrosion resistance is made of a material having sufficient corrosion resistance to the liquid flowing from the drain pipe 30, for example, EPDM, silicon, C
It is formed of an R-based rubber-like elastic material, and its thickness is selected to be about 1 mm or more (for example, about 1 mm to about 10 mm). The inner diameter of the vertical through-hole 27 covered with the protective layer 28 has substantially the same diameter as the inner diameter of the drain pipe 30, and the lower end (downstream side) of the drain has the same inner diameter. It is connected to the road 32. further,
In the illustrated example, a through hole formed in the foundation 12 is used as a part of the drainage channel 32. In addition, on the downstream side of the vertical through hole 27, instead of the drainage channel 32,
A suitable drain may be connected.

According to the configuration described above with reference to FIGS.
In a laminated rubber bearing body 20 for a seismic isolation building in which rubber layers 24 and reinforcing plates 25 are alternately laminated and flange members 22 and 23 are integrally joined to upper and lower end surfaces, a building 10 to be supported is used.
A vertical through hole 27 having substantially the same diameter as the drain pipe 30 of
A protective layer or cover 28 made of rubber or plastic having excellent corrosion resistance is joined to the inner surface of the vertical through-hole, and a flexible drain pipe 30 is connected to the upper end of the vertical through-hole 27. By connecting the lower end of the through hole to the drain passage or the drain pipe 32, the laminated rubber support 20 is connected.
The vertical through hole 27 formed in the inside of the base is used as a part of the drain pipe, so that the drain pipe 30 can be easily formed even when the base-isolated building 10 has a low underfloor height A such as a detached house. The drainage pipe 30 can be omitted, and the cost of the drainage pipe 30 can be reduced. Further, even when various drainage water (sewage) flows, the laminated rubber portion is formed by the protective layer or the protective cover 28. The effect of being able to protect the rubber layer 24 is obtained. Then, as shown in FIG. 3, even if the laminated rubber bearing body 20 is deformed during an earthquake or the like, the drain pipe 30 can be returned to its original state without any problem after the earthquake.

The laminated rubber bearing body 20 for a seismic isolation building described above has a structure in which the building 10 to be supported is a house, and the installation location is below the floor of the house (below the floor 11) as shown in the figure. It is preferable that the drainage pipe 30 is a flexible pipe such as a plastic pipe such as a vinyl chloride pipe or the like, or that the drain pipe 30 is a flexible pipe such as a plastic pipe such as a vinyl chloride pipe. Further, the laminated rubber bearing body 20 for a seismic isolation building described above may have a configuration in which the seismic isolation building to be supported has a plurality of floors and is installed between the floors. Of course, similar effects can be obtained when used as a drain pipe.

[0015]

As is apparent from the above description, according to the present invention (claim 1), for a base-isolated building, a rubber layer and a reinforcing plate are alternately laminated and flange members are joined to upper and lower end surfaces. In the laminated rubber bearing of (1), a vertical through hole having substantially the same diameter as the drain pipe of the building to be supported is formed, and a rubber or plastic protective layer or a protective cover having excellent corrosion resistance is joined to the inner surface of the vertical through hole. By connecting a flexible drainage pipe to an upper end of the vertical through-hole and connecting a lower end of the vertical through-hole to a drainage passage or a drainage pipe, the flexible rubber pipe is formed inside the laminated rubber bearing body. The vertical through-hole is used as a part of the drainpipe, so the drainpipe can be easily installed even in a building with a low underfloor, such as a detached house, and a part of the drainpipe is omitted. Drain pipe from what you can do It can also reduce costs further, the laminated rubber bearing body for seismic isolation building can protect the laminated rubber part with a protective layer or protective cover, even if the various waste water (sewage) flows is provided.

According to the second to fifth aspects of the present invention, in addition to the configuration of the first aspect, the building to be supported is a house, a structure installed under the floor of the house, and installed between the building and the foundation. The above structure has a structure in which the building has a plurality of stories and is installed between the stories, or the drainage pipe is a plastic pipe such as a vinyl chloride pipe. A laminated rubber bearing for an earthquake building is provided.

[Brief description of the drawings]

FIG. 1 is an elevational view schematically showing a building using a laminated rubber bearing for a base-isolated building to which the present invention is applied.

FIG. 2 is a longitudinal sectional view showing a laminated rubber bearing for a seismic isolation building in FIG. 1 without horizontal displacement.

FIG. 3 is a longitudinal sectional view showing the laminated rubber bearing for a seismic isolation building in FIG. 1 in a state of being horizontally displaced.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Seismic isolation building 11 Floor surface 12 Foundation 13 Ground 20 Laminated rubber bearing body 21 Laminated rubber part 22 Flange member 23 Flange member 24 Rubber layer 25 Reinforcement plate 27 Vertical through hole 28 Protective layer or cover 30 Drain pipe 31 Stopper 32 Drainage channel

Claims (6)

[Claims] 1. A laminated rubber bearing for a seismic isolation building comprising a rubber layer and a reinforcing plate alternately laminated and a flange member joined to upper and lower end surfaces thereof, the upper and lower parts having substantially the same diameter as a drain pipe of the building to be supported. A vertical through hole is formed, a protective layer or cover of rubber or plastic having excellent corrosion resistance is joined to the inner surface of the vertical through hole, and a flexible drain pipe is connected to the upper end of the vertical through hole. The lower end of the vertical through hole is connected to a drain passage or a drain pipe, so that the vertical through hole formed inside the laminated rubber bearing is used as a part of the drain pipe. Laminated rubber bearing for earthquake building. 2. The laminated rubber bearing for a base-isolated building according to claim 1, wherein the building to be supported is a house, and is installed under the floor of the house. 3. The laminated rubber bearing for a base-isolated building according to claim 1, which is installed between a building and a foundation. 4. The laminated rubber bearing for a base-isolated building according to claim 1, wherein the building has a plurality of stories and is installed between the stories. 5. The laminated rubber bearing for a base-isolated building according to claim 1, wherein said drain pipe is a plastic pipe such as a vinyl chloride pipe. 6. The protective layer or the protective cover is made of EPD.
The laminate for a base-isolated building according to any one of claims 1 to 5, wherein the laminate is formed of a material of a rubber-like elastic material of M, silicon, or CR, and has a thickness of about 1 mm to about 10 mm. Rubber bearing.