JPH1061249A - Seismic isolation support and manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve weatherability of a seismic isolation support and workability in a manufacturing process by providing coating material having excellent weatherability on the periphery of a laminated rubber support part composed of alternately laminating and adhering a plurality of hard plates having rigidity and a plurality of soft plates having visco-elasticity respectively. SOLUTION: Flange plates 3 are attached to the upper and lower faces of a laminated rubber support formed by laminating an inside laminated rubber 1 and steel plates 2. Next, ordinary temperature curing type liquid-state coating material is applied or sprayed on the periphery of the laminated rubber support to form a coated layer A. Acryl rubber, vinyl acetate resin or the like which is material which has the same degree of elongation as inside rubber, has excellent weatherability and cures at the ordinary temperature is used as the liquid- state coating material. Thereby the coated layer of a seismic isolation support can be formed by a simple process and a working method and weatherability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rigid plate having rigidity and a soft plate having viscoelasticity, each of which is alternately and multi-layer bonded to each other. And a method of manufacturing the same.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional laminated rubber bearing body in which a plurality of hard plates made of a rigid steel plate a and a plurality of viscoelastic soft plates b made of a rubber-based material are alternately laminated. ing. Alternatively, if necessary, a columnar body mainly composed of lead that absorbs vibration energy is provided at the center of the laminated rubber bearing body configured as described above.

When the rubber material used in the conventional laminated rubber bearing shown in FIG. 3 is made of natural rubber having poor weather resistance,
Ozone cracks easily occur, and the material changes to a brittle material due to acid deterioration.Therefore, when repeatedly deformed, the cracks in the coated rubber trigger the internal rubber to break and water enters through the cracks. There is a possibility that the steel sheet may rust, and the steel sheet and the rubber layer may be separated.

For this reason, as shown in FIG. 4, the outer peripheral surface of the laminated rubber bearing portion of the seismic isolation bearing is made of a rubber material c which is different from the inner rubber and has excellent weather resistance, for example, butyl rubber, polyurethane ethyl propylene. Seismic isolation bearings coated with one or more rubber materials selected from the group consisting of rubber and ethylene vinyl acetate rubber
No. 2934 has proposed this.

[0005]

However, the seismic isolation bearing according to the above proposal uses a thermosetting rubber material for both the inner rubber and the coating rubber, and is vulcanized and molded by a pressurizing and heating device. However, a dedicated pressurizing and heating device for vulcanization molding is required, which complicates the process and is economically disadvantageous.

The present invention has been proposed in view of the above problems, and aims at improving the weather resistance of a laminated rubber bearing, that is, the weather resistance to oxidation deterioration, ozone deterioration, ultraviolet light deterioration and chemical deterioration. It is another object of the present invention to provide a seismic isolation bearing that can improve workability and a method of manufacturing the same.

[0007]

In order to achieve the above object, a seismic isolation bearing according to the present invention comprises a rigid plate having rigidity and a soft plate having viscoelasticity which are alternately laminated and bonded. A coating layer having excellent weather resistance is formed on the outer peripheral surface of the laminated rubber bearing portion.

According to the second aspect of the present invention, the coating material is formed of an acrylic rubber-based, vinyl acetate resin-based, styrene / butadiene rubber-based, or chlorinated polyolefin resin-based room temperature-curable liquid coating material. . A method of manufacturing a seismic isolation bearing according to a third aspect of the present invention includes a first step of vulcanizing and molding a laminated rubber bearing excluding a coating layer on an outer peripheral surface, and upper and lower end faces of the molded laminated rubber bearing. A second step of attaching a flange plate for fixing to a building frame, and a third step of forming a weather-resistant coating layer made of a coating material having excellent weather resistance on the outer peripheral surface of the laminated rubber bearing portion between the two flange plates. And a process.

The invention according to claim 4 is a first step of vulcanizing and molding the laminated rubber bearing part with a part or the whole of the upper and lower flange plates as a part of a mold, and a laminated rubber between the upper and lower flange plates. It comprises a third step of applying or spraying a paint having excellent weather resistance on the outer peripheral surface of the bearing portion to form a weather resistant coating layer.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. The present invention is inexpensive, has the same degree of extensibility as the internal rubber, has excellent weather resistance, has been confirmed to be effective as a material that cures at room temperature, and has the same degree of extensibility as the internal rubber. An acrylic rubber-based, vinyl acetate resin-based, styrene-butadiene rubber-based, or chlorinated polyolefin resin-based room-temperature-curable emulsion-type or solvent-type liquid coating material is formed by layering the internal laminated rubber 1 and the steel plate 2. Coating layer A of laminated rubber bearing
After the flange plates 3 are attached to the upper and lower surfaces of the laminated rubber support by vulcanization molding, the liquid coating material constituting the coating layer A is brushed on the outer peripheral surface of the laminated rubber support. The coating layer and the flange plate on both upper and lower surfaces are air-tightly and continuously integrated, so that the bearing portion of the inner laminated rubber 1 is completely shut off. I do.

FIG. 1 shows the conventional cold-curable liquid coating material applied and sprayed on the outer periphery of a conventional laminated rubber bearing body having a coating layer 4 formed of a rubber material substantially the same as the internal laminated rubber 1. The case where the required coating layer A is formed is shown. FIG. 2 shows a case where a coating layer is not provided on the outer peripheral surface of a conventional laminated rubber bearing body, and shows a case where the coating layer A is directly formed on the outer peripheral surface of the laminated rubber bearing body by coating or spraying. is there.

[0012]

According to the present invention, since a liquid coating material having excellent weather resistance is used as the outer peripheral surface covering material in the laminated rubber bearing, the covering layer of the seismic isolation bearing can be formed by a simple process and working method. It becomes possible. As a result, the period of manufacture and installation of the seismic isolation bearing is shortened, the workability is improved, and the economy and maintenance are improved.

According to the second aspect of the present invention, the coating material is a room temperature-curable liquid coating material based on acrylic rubber, vinyl acetate resin, styrene / butadiene rubber, or chlorinated polyolefin resin. The coating material of the seismic isolation bearing having the excellent construction and weather resistance is constituted. In a third aspect of the present invention, in the first step, the laminated rubber bearing portion excluding the coating layer on the outer peripheral surface is vulcanized and formed, and the present invention is applied to both upper and lower end surfaces of the laminated rubber bearing portion thus vulcanized. An upper flange for mounting on the building side to a building and a base to be mounted and a lower flange for mounting to the base are mounted.

According to a fourth aspect of the present invention, a liquid paint having excellent weather resistance and workability is applied to the outer peripheral surface of the laminated rubber bearing portion between the upper and lower flange plates by brushing, roller painting or the like, or is sprayed easily. The covering layer of the seismic isolation bearing is formed by a simple process and working method, and the covering layer and the flange plate are integrated, and the inner laminated rubber layer is completely shut off from the outside air by the covering layer made of the liquid paint, and oxygen is removed. It is protected from deterioration, ozone deterioration, etc., and the weather resistance is also significantly improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a part of one embodiment of a seismic isolation bearing according to the present invention.

FIG. 2 is a vertical cross-sectional view of another embodiment of the seismic isolation bearing according to the present invention, with a part thereof cut away.

FIG. 3 is a vertical cross-sectional view showing a part of an example of a conventional seismic isolation bearing body.

FIG. 4 is a longitudinal cross-sectional view showing a part of another example of the conventional seismic isolation bearing body in a cut-away manner.

[Explanation of symbols]

 A Coating layer 1 Internal laminated rubber 2 Steel plate 3 Flange plate 4 Coating layer a Steel plate b Viscoelastic soft plate c Rubber material

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[Procedure amendment]

[Submission date] August 28, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Patent application title: Seismic isolation bearing and manufacturing method thereof

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rigid plate having rigidity and a soft plate having viscoelasticity, each of which is alternately and multi-layer bonded to each other. And a method of manufacturing the same.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional laminated rubber bearing body in which a plurality of hard plates made of a rigid steel plate a and a plurality of viscoelastic soft plates b made of a rubber-based material are alternately laminated. ing. Alternatively, if necessary, a columnar body mainly composed of lead that absorbs vibration energy is provided at the center of the laminated rubber bearing body configured as described above.

When the rubber material used in the conventional laminated rubber bearing shown in FIG. 3 is made of natural rubber having poor weather resistance,
Ozone cracks easily occur, and the material changes to a brittle material due to oxidative degradation.If the material is repeatedly deformed, the cracks in the coated rubber trigger the internal rubber to break, and water enters through the cracks. There is a possibility that the steel sheet may rust, and the steel sheet and the rubber layer may be separated.

For this reason, as shown in FIG. 4, the outer peripheral surface of the laminated rubber bearing portion of the seismic isolation bearing is made of a rubber material c which is different from the inner rubber and has excellent weather resistance, for example, butyl rubber, polyurethane ethyl. A seismic isolation bearing coated with one or more rubber materials selected from the group consisting of propylene rubber and ethylene vinyl acetate rubber is disclosed in
No. 12934.

[0005]

However, the seismic isolation bearing according to the above-mentioned proposal involves vulcanizing and molding both the internal rubber and the coating rubber by means of a pressurizing and heating device. A pressurizing and heating device is required, which complicates the process and is economically difficult. The present invention has been proposed in view of such a problem, and an object of the present invention is to improve the weather resistance of a laminated rubber bearing, that is, to improve the weather resistance to oxidation deterioration, ozone deterioration, ultraviolet light deterioration and chemical deterioration, and to improve the workability. An object of the present invention is to provide a seismic isolation bearing body which can improve the performance and a method of manufacturing the same.

[0006]

In order to achieve the above object, a seismic isolation bearing according to the present invention comprises a rigid plate having rigidity and a soft plate having viscoelasticity which are alternately laminated and bonded. A coating layer having excellent weather resistance is formed on the outer peripheral surface of the laminated rubber bearing portion.

According to the second aspect of the present invention, the coating material is a cold-setting liquid coating material. A method of manufacturing a seismic isolation bearing according to a third aspect of the present invention includes a first step of vulcanizing and molding a laminated rubber bearing excluding a coating layer on an outer peripheral surface, and upper and lower end faces of the molded laminated rubber bearing. A second step of attaching a flange plate for fixing to a building frame, and a third step of forming a weather-resistant coating layer made of a coating material having excellent weather resistance on the outer peripheral surface of the laminated rubber bearing portion between the two flange plates. And a process.

According to a fourth aspect of the present invention, there is provided a first step of vulcanizing and molding the laminated rubber bearing portion with part or all of the upper and lower flange plates as a part of a mold, and a laminated rubber between the upper and lower flange plates. It comprises a third step of applying or spraying a paint having excellent weather resistance on the outer peripheral surface of the bearing portion to form a weather resistant coating layer.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. The present invention is inexpensive, has the same degree of extensibility as the internal rubber, has excellent weather resistance, has been confirmed to be effective as a material that cures at room temperature, and has the same degree of extensibility as the internal rubber. Acrylic rubber, vinyl acetate resin, styrene-butadiene rubber, chlorinated polyolefin resin, etc., a room temperature-curable emulsion-type or solvent-type liquid coating material is layered on the inner laminated rubber 1 and the steel plate 2. After the flange plates 3 are attached to the upper and lower surfaces of the laminated rubber support by vulcanization molding, the liquid coating material constituting the coated layer A is formed by using the material of the coating layer A of the laminated rubber support. The outer peripheral surface of the laminated rubber bearing can be covered by a simple work method such as brushing, roller coating, or spraying, so that the covering layer and the upper and lower flange plates can be easily separated. Completely block internal laminated rubber 1 bearing continuously integrated with.

FIG. 1 shows a conventional cold-curable liquid coating material applied to and sprayed on the outer periphery of a conventional laminated rubber support having a coating layer 4 formed of a rubber material substantially the same as the internal laminated rubber 1. The case where the required coating layer A is formed is shown. FIG. 2 shows a case where a coating layer is not provided on the outer peripheral surface of a conventional laminated rubber bearing body, and shows a case where the coating layer A is directly formed on the outer peripheral surface of the laminated rubber bearing body by coating or spraying. is there.

[0011]

According to the present invention, since a liquid coating material having excellent weather resistance is used as the outer peripheral surface covering material in the laminated rubber bearing, the covering layer of the seismic isolation bearing can be formed by a simple process and working method. It becomes possible. As a result, the period of manufacture and installation of the seismic isolation bearing is shortened, the workability is improved, and the economy and maintenance are improved.

According to a second aspect of the present invention, a coating material for a seismic isolation bearing having a simple structure and excellent workability and weather resistance is constituted by forming the coating material from a room temperature-curable liquid coating material. It is. In a third aspect of the present invention, in the first step, the laminated rubber bearing portion excluding the coating layer on the outer peripheral surface is vulcanized and formed, and the present invention is applied to both upper and lower end surfaces of the laminated rubber bearing portion thus vulcanized. An upper flange for mounting on the building side to a building and a base to be mounted and a lower flange for mounting to the base are mounted.

[0013] The invention according to claim 4 is that the liquid paint having excellent weather resistance and workability is applied to the outer peripheral surface of the laminated rubber bearing portion between the upper and lower flange plates by brushing, roller painting or the like, or is simply sprayed. The covering layer of the seismic isolation bearing is formed by the simple steps and the working method, and the covering layer and the flange plate are integrated, and the inner laminated rubber layer is completely shielded from the outside air by the covering layer of the liquid paint, thereby oxidizing. It is protected from deterioration, ozone deterioration, etc., and the weather resistance is also significantly improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a part of one embodiment of a seismic isolation bearing according to the present invention.

FIG. 2 is a vertical cross-sectional view of another embodiment of the seismic isolation bearing according to the present invention, with a part thereof cut away.

FIG. 3 is a vertical cross-sectional view showing a part of an example of a conventional seismic isolation bearing body.

FIG. 4 is a longitudinal cross-sectional view showing a part of another example of the conventional seismic isolation bearing body in a cut-away manner.

[Description of Signs] A coating layer 1 internal laminated rubber 2 steel plate 3 flange plate 4 coating layer a steel plate b viscoelastic soft plate c rubber material

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

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FIG. 2

Claims (4)

[Claims] 1. A coating layer made of a coating material having excellent weather resistance is provided on an outer peripheral surface of a laminated rubber bearing portion in which a plurality of hard plates having rigidity and soft plates having viscoelasticity are alternately layered and bonded. A seismic isolation bearing characterized by being formed. 2. The seismic isolation bearing according to claim 1, wherein said coating material is a room temperature curing type liquid coating material of acrylic rubber, vinyl acetate resin, styrene / butadiene rubber, or chlorinated polyolefin resin. body. 3. A first step of vulcanizing and molding a laminated rubber bearing portion excluding a coating layer on an outer peripheral surface, and a flange plate for fixing to a building frame on both upper and lower end surfaces of the molded laminated rubber bearing portion. A seismic isolation method comprising: a second step of attaching; and a third step of forming a weather-resistant coating layer made of a coating material having excellent weather resistance on the outer peripheral surface of the laminated rubber bearing between the flange plates. Manufacturing method of the bearing body. 4. A first step of vulcanizing and molding the laminated rubber bearing part with part or all of the upper and lower flange plates as a part of a mold, and an outer peripheral surface of the laminated rubber bearing part between the upper and lower flange plates. A method of manufacturing a seismic isolation bearing, comprising: a third step of forming or coating a weather-resistant coating layer by applying or spraying a paint having excellent weather resistance.