JP4649999B2 - Sliding seismic isolation device and seismic isolation structure using the same - Google Patents

Description

  The present invention relates to a bearing device that supports a structure such as a building, and more specifically, to a sliding seismic isolation device that protects such a structure from vibrations caused by an earthquake or the like, and a seismic isolation bearing structure using the same. .

JP-A-9-310408 Japanese Patent Laid-Open No. 8-155867

  The seismic isolation bearing device comprising a laminated rubber body in which reinforcing plates and rubber layers are alternately laminated is arranged between the upper structure and the lower structure to support the upper structure, and for earthquakes, etc. The vibration of the upper structure is reduced and the vibration of the upper structure is attenuated. As such a seismic isolation device, the upper end portion and the lower end portion are fixed to the upper structure and the lower structure, respectively, and the origin return type is used, and either the upper end portion or the lower end portion is the upper portion. There is a sliding type that is fixed to one of the structure and the lower structure and the other is slidably displaced with respect to either the upper structure or the lower structure.

  As a sliding-type seismic isolation device, for example, a sliding material provided on one end surface of a laminated rubber body and a smooth plate such as a metal plate on which the sliding material slides (Patent Document 1) And an elastic seismic isolation device and a sliding seismic isolation device arranged in parallel to support the vertical load of the superstructure by both of them (Patent Document 2).

  The conventional sliding seismic isolation device has a problem that the seismic isolation function cannot be achieved unless it is a large-scale earthquake, for example, a seismic intensity of 5 or more. This is because if the friction coefficient between the sliding material and the smooth plate as the counterpart material is about 0.1, the sliding material will slide on the smooth plate unless the seismic force is 0.1 G (gal) or more. There is not for it. In order to secure the seismic isolation performance to some extent, it is necessary to use a laminated rubber having a certain number of rubbers in order to alleviate the influence of the static frictional force until sliding. However, if an elastic seismic isolation device consisting of a laminated rubber body is used to obtain a seismic isolation effect against a seismic force of about 0.1 G, the laminated rubber body will be sheared and deformed in the horizontal direction, and the load will be Is unevenly distributed, which causes a decrease in sliding performance and sliding surface durability.

  The present invention has been made in view of the above-mentioned points, and the object of the present invention is that the sliding friction between the sliding member and the smooth plate as the counterpart material has a small speed dependency and a friction coefficient of 0.02 or less. A sliding seismic isolation device that includes a sliding member that exhibits a low value, can reduce the transmission of vibration to a superstructure even with a small-scale earthquake, and can achieve reliable protection of the superstructure, and The object is to provide a seismic isolation bearing structure.

A sliding seismic isolation device according to the present invention includes a laminated rubber body that is formed by alternately laminating reinforcing plates and rubber layers, and is fixed to one of an upper structure and a lower structure, and the laminated rubber body. A sliding member fixed to one of the upper surface and the lower surface, and a smooth plate that is slidably abutted on the sliding member and fixed to either the upper structure or the lower structure. and, sliding member includes a fixed base in either one on one surface of the upper and lower surfaces of the laminated rubber body, and the surface layer member which is joined at one surface to the surface of the other side of the base body, An opening on the other surface of the surface material and at least one recess formed in the base material and the surface material, and a filling coating layer made of a lubricating composition filled in the recess and covering the other surface of the surface material And the base is Consists維織fabric-reinforced thermosetting synthetic resin laminate of surface layer material is bonded on one surface to the surface of the other side of the substrate, and composed of at least one of the fibers of the inorganic fibers and organic fibers woven four and tetrafluoride resin woven layer filled coating, tetrafluoroethylene which the other surface is coated with a filling coating layer together are joined at one surface to the other side surface of the fabric layer The at least one recess is open on the other surface of the tetrafluoroethylene resin sheet, and the filling coating layer is slidably abutted on the smooth plate on the surface. And the lubricating composition of the filled coating layer contains 5 to 30% by weight of silicone oil, 20 to 40% by weight of silicone wax, 20 to 40% by weight of melamine cyanurate, and the balance contains ethylene tetrafluoride resin. Features and That.

  According to the sliding seismic isolation device of the present invention, the sliding member fixed to one of the upper surface and the lower surface of the laminated rubber body includes a base body made of a laminated body of fiber woven cloth reinforced thermosetting synthetic resin and the base member. A surface layer material bonded to one surface of the substrate, an opening on the surface of the surface layer material, at least one recess formed in the substrate and the surface layer material, and filling the recess, and on the surface of the PTFE sheet of the surface material Since the load-bearing property of the sliding member is enhanced, the sliding member is not subjected to plastic deformation such as settling, and the sliding member has a long period of time. Function is maintained.

  Further, since the surface of the sliding member is filled with the concave portion opened on the surface of the PTFE sheet of the surface material and the filling coating layer of the lubricating composition coated on the surface of the PTFE sheet of the surface material is exposed. As a result of sliding between the sliding member and the smooth plate through the filled coating layer of the lubricating composition, the friction coefficient shows a low value of 0.02 or less regardless of the sliding speed, and a small-scale earthquake It is possible to reduce vibration transmission to the upper structure against vibrations caused by the above, and to achieve reliable protection of the upper structure.

In a preferred example, the reinforcing plate includes a thin reinforcing plate alternately laminated with a rubber layer and a pair of thick reinforcing plates fixed to each of the uppermost and lowermost rubber layers. The sliding member may be bonded to one thick reinforcing plate on one surface of the base and fixed to either the upper surface or the lower surface of the laminated rubber body. A part thereof on the substrate side may be embedded and fixed to either the upper surface or the lower surface of the laminated rubber body.

  The sliding member and one thick reinforcing plate are usually joined together via an adhesive, but a part of the sliding member is embedded in a recess formed in the thick reinforcing plate and the sliding member is attached to the laminated rubber body. In addition to the bonding force of the adhesive, in addition to the bonding force of the adhesive, a constraint regarding the horizontal direction of the thick reinforcing plate with respect to the sliding member is added, so that the sliding member can be firmly fixed by the laminated rubber body. It is more preferable.

  The inorganic fiber preferably includes at least one of glass fiber and carbon fiber, and the organic fiber preferably includes at least one of cotton fiber, aramid fiber, and aromatic polyester fiber.

  The woven fabric structure of the woven fabric formed from these inorganic fibers and organic fibers is not particularly limited, and may be any of plain weave, oblique weave, satin weave and the like.

  A surface layer material is formed by, for example, fusing and integrating a PTFE sheet on one surface of a woven fabric layer formed by filling and coating PTFE on a woven fabric formed of at least one of inorganic fibers and organic fibers. Yes. The PTFE sheet may be a thin sheet having a thickness of about 0.2 mm, and even if such a thin PTFE sheet is worn out, the woven fabric and the partner material filled with the woven fabric are described later. Therefore, the low friction property is maintained. This surface layer material may be integrally bonded to one surface of the substrate via an adhesive.

  The recess formed in the surface of the surface material PTFE sheet and formed in the substrate and the surface material preferably includes at least one of a cylindrical recess and a recess formed by two rectangular long grooves orthogonal to each other.

  This recess mainly holds the filling coating layer made of the lubricating composition, and the shape is not particularly limited, but from the viewpoint of workability and the like, it is composed of a cylindrical recess or two rectangular long grooves orthogonal to each other. It is preferable that it is a concave portion, and that the lubricating coating of the lubricating composition can be uniformly formed on the surface of the PTFE sheet by feeding out the lubricating composition from the concave portion in the disappearance of wear of the filling coating layer at the portion covering the PTFE sheet. The number of the concave portions may be one, but a plurality of concave portions is preferable because this can be effectively achieved.

  In a preferred example, the smooth plate comprises a stainless steel plate and a lubricating coating formed on one surface of the stainless steel plate. The lubricating coating is an epoxy resin, a curing agent, PTFE, and a reactive group having an epoxy group. It is good to consist of a composition containing silicone oil and triazine thiol.

  A smooth plate provided with a lubricating coating comprises a PTFE sheet as a surface layer material of a sliding member through a lubricating coating of a composition containing an epoxy resin, a curing agent, PTFE, a reactive silicone oil having an epoxy group, and triazine thiol. Since it slides with a filled coating layer made of a lubricating composition covering the surface of the PTFE sheet, the friction coefficient between them at a particularly high surface pressure shows a low frictional property of around 0.02, As a result of the quick start regardless of the size, a sufficient seismic isolation function can be exhibited even from a large seismic force to a small seismic force.

  The composition for forming the lubricating coating is preferably composed of 100 parts by weight of the sum of the epoxy resin, the curing agent and PTFE, and 2 to 30 parts by weight of the sum of the reactive silicone oil having an epoxy group and triazine thiol.

  When the sum of the reactive silicone oil having an epoxy group and the triazine thiol is less than 2 parts by weight, the lubricity cannot be obtained, and when it exceeds 30 parts by weight, the lubricating film formed on the surface of the smooth plate The mechanical strength of is significantly reduced.

  The blending weight ratio of the epoxy resin and the curing agent is preferably (epoxy resin) :( curing agent) = E: 10 to E: 300, where E is the epoxy equivalent of the epoxy resin.

  The blending ratio of the reactive silicone oil having an epoxy group and triazine thiol is preferably (triazine thiol) / (reactive silicone oil having an epoxy group) = 0.03-1.

  Reactive silicone oil having an epoxy group is an oily substance having a linear structure, but reacts with triazine thiol in the above blending ratio to form a three-dimensional network structure, improving the toughness of the lubricating coating, and triazine thiol and stainless steel. Since it plays a role in improving the adhesive strength between the surface of the stainless steel plate and the lubricating coating by reaction with the surface of the steel plate, lubrication in the friction with the filled coating layer made of the lubricating composition exposed on the surface of the PTFE sheet of the sliding member There is no problem such as peeling of the film.

  The sliding seismic isolation device according to the present invention can have a seismic isolation structure that is used in combination with the sliding seismic isolation device and a laminated rubber bearing device containing a lead plug in which a lead plug is filled and held.

  The sliding seismic isolation device does not have a sufficient function to return the upper structure to the initial setting position (origin position) after a horizontal relative sliding displacement occurs between the smooth plate and the sliding member. Residual displacement of the upper structure can be reduced by using a laminated rubber bearing device with a lead plug as a spring device that generates a spring force in the horizontal direction between the upper structure and the lower structure. Moreover, since the friction coefficient between the smooth plate in the sliding seismic isolation device and the filling coating layer made of the lubricating composition covering the surface of the PTFE sheet of the surface material of the sliding member shows a low value of 0.02 or less, The seismic isolation cycle of the superstructure can be lengthened while keeping the acceleration at the start of sliding small. As a result, sufficient seismic isolation function is demonstrated from large to small seismic forces.

  According to the present invention, the sliding friction between the sliding member and the smooth plate has a low speed dependency and a low coefficient of friction of 0.02 or less. Provided with a sliding seismic isolation device capable of periodicity, capable of reducing the transmission to the superstructure against vibrations caused by small-scale earthquakes, etc., and achieving reliable protection of the superstructure Seismic isolation structure can be provided.

  Next, the present invention and its embodiments will be described in more detail based on preferred examples shown in the drawings. The present invention is not limited to these examples.

  1 to 5, a sliding seismic isolation device 1 of this example includes a laminated rubber body 4 in which reinforcing plates 2 and rubber layers 3 are alternately laminated, and a sliding member fixed to the lower surface of the laminated rubber body 4. 5 and a smooth plate 7 as a mating member that slidably contacts the sliding member 5 of the sliding isolation bearing 6.

  The reinforcing plate 2 includes a plurality of thin reinforcing plates (thin steel plates) 8 stacked alternately with the rubber layers 3 and a pair of thick reinforcing plates (thicknesses) fixed to the uppermost and lowermost rubber layers 3 respectively. The sliding member 5 is partly embedded in a rectangular recess 11 formed in one thick reinforcing plate 10 and is attached to the thick reinforcing plate 10. The sliding seismic isolation bearing 6 is bonded and fixed to the lower surface of the laminated rubber body 4. The shear key 12 is partially embedded in the thick reinforcing plate 9 of the laminated rubber body 4 and fixed. And is fixed to the upper structure G via a flange plate 13 integrated with a thick reinforcing plate 9 via fastening means such as bolts, and the smooth plate 7 is attached to the lower structure B. It has been.

  The sliding member 5 is fixed to the lower surface of the laminated rubber body 4 and includes a base body 14 made of a laminated body of fiber woven cloth reinforced thermosetting synthetic resin, and a surface layer material 16 bonded to one surface 15 of the base body 14. And a plurality of recesses 17 formed in the surface of the surface layer material 16 and formed in the base material 14 and the surface layer material 16, and a filling coating made of a lubricating composition filled in the recesses 17 and covering the surface of the surface layer material 16. The surface layer material 16 is bonded to one surface 15 of the base body 14, and a woven fabric 19 made of at least one of inorganic fibers and organic fibers is filled with PTFE 20. The woven fabric layer 21 and a PTFE sheet 23 bonded to one surface 22 of the woven fabric layer 21 are filled in the concave portion 17 and covering the surface of the PTFE sheet 23 of the surface layer material 16. The lubricating composition of Kutsugaeso 18, 20 to 40 wt% silicone oil 5 to 30 wt% silicone wax and 20-40 wt% melamine cyanurate and the balance and a PTFE.

  The base 14 of the sliding member 5 is manufactured as follows by the manufacturing apparatus shown in FIG. A reinforcing base material 26 made of a fiber woven fabric wound around an uncoiler 25 is sent to a container 29 storing a thermosetting synthetic resin varnish 28 by a feed roller 27, and is guided by guide rollers 30 and 31 provided in the container 29. By passing through the thermosetting synthetic resin varnish 28 stored in the container 29, the thermosetting synthetic resin varnish 28 is applied to the surface of the reinforcing substrate 26. Next, the reinforcing base material 26 coated with the thermosetting synthetic resin varnish 28 was sent to the compression rolls 33 and 34 by the feed roller 32 and applied to the surface of the reinforcing base material 26 by the compression rolls 33 and 34. The thermosetting synthetic resin varnish 28 is impregnated into the fiber structure gap. Then, the solvent is blown in the drying furnace 35 with respect to the reinforcing base material 26 impregnated with the thermosetting synthetic resin varnish 28, and at the same time, the reaction of the resin proceeds, whereby a prepreg (resin processing base material) that can be molded. 36 is produced. As shown in FIG. 5, the prepreg 36 thus obtained is cut into a desired size, a plurality of the prepregs 36 are stacked and laminated, and then heated and pressed in the stacking direction to strengthen the fiber woven fabric. A square substrate 14 made of a laminate of thermosetting synthetic resin is produced.

  As the fiber woven fabric used for the substrate 14, a cotton fabric, a glass fiber woven fabric, a carbon fiber woven fabric and the like are suitable. Moreover, as thermosetting synthetic resins, phenol resins, epoxy resins, unsaturated polyester resins, etc., especially epoxy resins are suitable. As volatile solvents for these thermosetting synthetic resins, methanol, acetone, methyl ethyl ketone, etc. are used. Depending on the thermosetting synthetic resin to be selected. The solid content of the thermosetting synthetic resin varnish formed by dissolving the thermosetting synthetic resin in a volatile solvent is about 30 to 65% by weight, and the viscosity of the resin varnish is about 800 to 5000 cP. 1000 to 4000 cP is preferred.

  As the woven fabric 19 used for the surface layer material 16, a woven fabric made of inorganic fibers such as glass fibers and carbon fibers or a woven fabric made of organic fibers such as cotton fibers, aramid fibers, and aromatic polyester fibers is preferable. The woven fabric structure of these fibers is not particularly limited, and may be any of plain weave, oblique weave, satin weave, and the like. PTFE 20 filled and coated on the woven fabric 19 includes “Teflon (registered trademark) 30-J (trade name)” manufactured by Mitsui DuPont Fluorochemical Co., Ltd. and “Polyflon D-1 and D-2” manufactured by Daikin Industries, Ltd. (Trade name) "and" Fluon XAD912 (trade name) "manufactured by Asahi Glass Co., Ltd. are preferably used in the form of dispersion. Further, as the PTFE sheet 23, a sheet having a thickness of about 0.2 to 0.4 mm is preferably used. If the thickness of the PTFE sheet 23 is about 0.2 to 0.4 mm, plastic flow (creep) does not occur under load.

  A surface layer material 16 comprising a woven fabric layer 21 in which a woven fabric 19 made of inorganic fibers or organic fibers is filled and coated with PTFE 20 and a PTFE sheet 23 fused and joined to one surface 22 of the woven fabric layer 21 is made of PTFE. The surface opposite to the surface to which the sheet 23 is bonded is integrally bonded to one surface 15 of the base 14 via an adhesive.

  The base body 14 and the surface layer material 16 are formed with a plurality of recesses 17 that open on the surface of the PTFE sheet 23 of the surface layer material 16 and extend to a part of the base body 14. The columnar recess 17 has a ratio of 20 to 30% of the total area of the openings of the recess 17 with respect to the surface area of the PTFE sheet 23 (the area where the recess 17 is not formed, the same applies hereinafter). It is formed as follows. These recesses 17 hold a part of the filling coating layer 18 made of a lubricating composition, which will be described later. In order to make the filling coating layer 18 exhibit good frictional properties such as low friction properties, a PTFE sheet 23 is used. The total area of the openings of the recesses 17 is required to be at least 20% with respect to the surface area. However, when the total area of the openings of the recesses 17 exceeds 30% with respect to the surface area of the PTFE sheet 23, the strength of the surface layer material 16 is reduced. These recesses 17 are preferably formed by machining such as drilling. As shown in FIG. 6, the concave portion 17 is formed of two rectangular long grooves that are opened on the surface of the PTFE sheet 23 of the surface layer material 16 and extend to a part of the substrate 14. The concave portion 17 may be used, and the concave portion 17 is also formed so that the total area of the openings of the concave portion 17 occupies a ratio of 20 to 30% with respect to the surface area of the PTFE sheet 23. The sliding member 5 shown in FIG. 2 is substantially rectangular in a plan view, but may instead be circular in a plan view as shown in FIG.

  The lubricating composition of the filling coating layer 18 filled in the plurality of recesses 17 formed by opening on the surface of the PTFE sheet 23 and covering the surface of the PTFE sheet 23 is composed of 5 to 30% by weight of silicone oil and silicone wax 20 to 40% by weight, melamine cyanurate 20 to 40% by weight and the balance PTFE.

  In the lubricating composition, the silicone wax mainly exerts an effect of reducing the friction coefficient and plays a role as a carrier that absorbs and holds the silicone oil described later. Examples of the silicone wax include dimethylpolysiloxane, methylphenylpolysiloxane, long chain alkyl-modified polysiloxane, trifluoropropylmethylpolysiloxane, and the like. Specific examples include “silicone wax W23 (trade name)” manufactured by Asahi Kasei Wacker Silicone. The blending ratio of the silicone wax is 20 to 40% by weight, preferably 25 to 30% by weight. When the blending ratio is less than 20% by weight, desired low friction characteristics cannot be obtained, and when it exceeds 40% by weight, the formability during the filling and coating operation is deteriorated.

  Silicone oils work with the silicone wax to improve low friction, especially when used under high load conditions. Silicone oil is a silicone oil in which a part of methyl group of dimethyl silicone oil and dimethylpolysiloxane is substituted with polyether group, phenyl group, alkyl group, aralkyl group, fluorinated alkyl group, etc., and has a viscosity (25 ° C.). 100 to 50000 cSt, preferably 500 to 10000 cSt, is preferably used. Specific examples of the silicone oil include dimethyl silicone oil “KF96H (trade name)” manufactured by Shin-Etsu Chemical Co., Ltd., and dimethyl silicone oil “AK series (trade name)” manufactured by Asahi Kasei Wacker Silicone. Since most of this silicone oil is absorbed and retained by the above-mentioned silicone wax, a relatively large amount of the silicone oil can be blended. And the compounding ratio of a silicone oil is 5 to 30 weight%, Preferably it is 10 to 25 weight%. When the blending ratio is less than 5% by weight, when used under high load conditions, the amount supplied to the sliding surface is small and the effect of improving the low friction property is not sufficiently exerted, and when it exceeds 30% by weight May flow out (bleed out) during molding.

  Melamine cyanurate is an addition compound of melamine and cyanuric acid or isocyanuric acid. A 6-membered ring melamine molecule and cyanuric acid (isocyanuric acid) molecule are arranged in a plane by hydrogen bonds, and the plane has weak bonding strength. The layers overlap each other and have cleavage properties such as molybdenum disulfide and graphite. This melamine cyanurate has the effect | action which improves the low friction property and abrasion resistance of a lubricating composition. The blending ratio is usually 20 to 40% by weight, preferably 25 to 35% by weight. When the blending ratio is less than 20% by weight, the effect of improving the low friction property and the wear resistance is not sufficiently exhibited, and when it exceeds 40% by weight, the wear resistance may be lowered.

  PTFE mainly exerts an effect of imparting low friction. PTFE is PTFE mainly used for molding as molding powder or fine powder (hereinafter abbreviated as “high molecular weight PTFE”), and the molecular weight is controlled by decomposing high molecular weight PTFE or polymerizing PTFE by irradiation. Therefore, it is roughly classified into PTFE (hereinafter, abbreviated as “low molecular weight PTFE”) mainly used as an additive material having a molecular weight lower than that of high molecular weight PTFE, which is easy to grind and has good dispersibility. The As PTFE in the present invention, high molecular weight PTFE alone or a mixture of high molecular weight PTFE and low molecular weight PTFE can be used. The blending ratio (weight) of the high molecular weight PTFE and the low molecular weight PTFE as a mixture is usually 1: 1 to 3: 1.

  As high molecular weight PTFE for molding powder, “Teflon (registered trademark) 7-J (trade name)”, “Teflon (registered trademark) 7A-J (trade name)”, “Teflon (registered trademark)” manufactured by Mitsui DuPont Fluoro Chemical Co., Ltd. "Polyflon M-12 (trade name)" manufactured by Daikin Industries, Ltd., "Fullon G163 (trade name)", "Fullon G190 (trade name)" manufactured by Asahi Glass Co., Ltd. Etc. High molecular weight PTFE for fine powder includes “Teflon (registered trademark) 6CJ (trade name)” manufactured by Mitsui DuPont Fluoro Chemical Co., Ltd., “Polyflon F201 (trade name)” manufactured by Daikin Industries, Ltd. “Full-on CD076 (product name)”, “Full-on CD090 (product name)” and the like.

  Further, as the high molecular weight PTFE, in addition to the above high molecular weight PTFE, those obtained by modifying the high molecular weight PTFE with a styrene-based, acrylate-based, methacrylic ester-based, acrylonitrile-based polymer, etc. can be used. Examples thereof include “Metablene A-3000 (trade name)” manufactured by Mitsubishi Rayon Co., Ltd. Low molecular weight PTFEs include “TLP-10F (trade name)” manufactured by Mitsui DuPont Fluoro Chemical Co., Ltd., “Lublon L-5 (trade name)” manufactured by Daikin Industries, Ltd., and “Fullon L169J (commercial product) manufactured by Asahi Glass Co., Ltd. "KTL-8N (trade name)" manufactured by Kitamura Co., Ltd., and the like.

  In the lubricating composition, the blending ratio of PTFE is the remaining amount obtained by subtracting the blending amount of the filler from the lubricating composition, and is preferably 20 to 50% by weight, more preferably 25 to 40% by weight. When the blending ratio is less than 20% by weight, the desired low friction property cannot be obtained, and when it exceeds 50% by weight, the wear resistance is deteriorated.

  The lubricating composition having the above-described component composition is filled and coated on the surface of the plurality of recesses 17 formed on the substrate 14 and the surface layer material 16 and the PTFE sheet 23 of the surface layer material 16 as follows. A predetermined amount of each of the above components is mixed with a Henschel mixer, a super mixer, a ball mill, a tumbler, or the like, and the resulting mixture is melt-kneaded at a temperature at which the wax in the components melts, and the kneaded product is then added to a sheet. And is supplied onto the PTFE sheet 23 of the surface layer material 16 in which a plurality of recesses 17 are formed. Next, the sheet-like kneaded material is compressed with a predetermined pressure to fill the concave portion 17 opened on the surface of the PTFE sheet 23, and the surface of the PTFE sheet 23 (the surface where the concave portion 17 is not formed) is filled with the kneaded material. The covering layer 18 is formed.

  In this way, the base body 14 made of a laminate of fiber woven fabric reinforced thermosetting synthetic resin, the surface layer material 16 integrally bonded to one surface 15 of the base body 14, and the PTFE sheet 23 of the surface layer material 16 A plurality of recesses 17 formed in the base 14 and the surface layer material 16 and a filling coating layer of a lubricating composition that is filled in the recesses 17 and covers the surface of the PTFE sheet 23 of the surface layer material 16. The sliding member 5 consisting of 18 is produced.

  The sliding member 5 manufactured in this way is fitted into the recess 11 formed on the thick reinforcing plate 10 of the laminated rubber body 4 with the PTFE sheet 23 side facing down, and is fitted into the recess 11 via an adhesive. The PTFE sheet 23 is protruded from the surface of the thick reinforcing plate 10.

  For the smooth plate 7 slidably contacting the sliding member 5, a composite plate composed of a stainless steel plate (SUS403) 41 and a lubricating coating 42 formed on one surface of the stainless steel plate 41 is used.

  As the lubricating coating 42 forming the composite plate, a lubricating coating of a composition comprising an epoxy resin, a curing agent, PTFE, a reactive silicone oil having an epoxy group, and triazine thiol is preferably used. In this composition, a total of 2 to 30 parts by weight of a reactive silicone oil having an epoxy group and triazine thiol is blended with 100 parts by weight of a total of an epoxy resin, a curing agent, and PTFE.

  Here, a method of forming a lubricating film 42 of a composition comprising an epoxy resin, a curing agent, PTFE, a reactive silicone oil having an epoxy group and triazine thiol on one surface of the stainless steel plate 41 will be described.

  After dissolving or dispersing an epoxy resin, PTFE and reactive silicone oil having an epoxy group in an organic solvent, dissolving a curing agent and triazine thiol, or dissolving an epoxy resin in an organic solvent, PTFE and an epoxy group The reactive silicone oil, the curing agent, and triazine thiol are dissolved or dispersed to prepare a solution having a solid content of 30 to 40% by weight and a viscosity (room temperature) of about 100 to 200 cSt. This solution is cured by forming a coating film by means such as brushing or spraying on one surface of a stainless steel plate 41 that has been subjected to processing generally performed in advance, such as shot blasting and degreasing, and curing is performed. A coating is obtained. Various curing conditions can be adopted depending on what curing agent is used after the coating is formed. As an example, when an alicyclic amine is used as a curing agent, after forming a coating film, it is naturally dried or pre-dried in a hot air drying furnace for about 30 minutes to dissipate the solvent, and then 180 ° C. This is performed by baking at a temperature of about 30 minutes. The lubricating coating 42 thus obtained has a thickness of about 20-40 μm.

  In the lubricating coating 42, conventionally known epoxy resins can be used, for example, bisphenol A type epoxy resin, bisphenol F type epoxy resin, phenol novolac type epoxy resin, cresol novolac type epoxy resin, brominated bisphenol A type. Examples thereof include glycidyl ether type epoxy resins such as epoxy resins, glycidyl ester type epoxy resins, glycidyl amine type epoxy resins, and alicyclic epoxy resins. These may be used alone or in combination of two or more. Specifically, bisphenol A type liquid or solid epoxy resin “Epicoat (trade name)” manufactured by Yuka Shell Epoxy Co., Ltd. may be mentioned. This epoxy resin forms the matrix of the lubricating coating 42 and functions as an adhesive with the base (stainless steel plate 41).

  As the curing agent, those conventionally used as a curing agent for epoxy resins can be used, and examples thereof include polyamines, acid anhydrides, phenol resins, polyamide resins, and mercaptan compounds.

  Examples of polyamines include aliphatic polyamines such as diethylenetriamine and triethylenetetramine, alicyclic amines such as isophoronediamine and bis (4-amino-3-methylcyclohexyl) methane, and aromatics such as diaminodiphenylmethane, diaminodiphenylsulfone, and metaphenylenediamine. Heterocyclic amines, heterocyclic amines such as aminoethylpiperazine, 3,9-bis (3-aminopropyl) -2,4,8,10-tetraoxaspiro [5.5] undecane, dicyandiamide and modified ones thereof Is included. Examples of the modification method include making an adduct with an epoxy resin, ethylene oxide, propylene oxide, acrylonitrile, and ketones. Specific examples of the polyamine include modified aliphatic polyamine “EpiCure T (trade name)” manufactured by Yuka Shell Epoxy, modified alicyclic amine “EpiCure 113 (trade name)”, modified aromatic amine “Epicure W ( Product name) ".

  Examples of acid anhydrides include aliphatic acid anhydrides such as dodecyl succinic anhydride and polyazeline acid anhydride, alicyclic anhydrides such as hexahydrophthalic anhydride, tetrahydrophthalic anhydride, and methylnadic anhydride, phthalic anhydride, Aromatic acid anhydrides such as trimellitic anhydride and pyromellitic anhydride, and halogen acid anhydrides such as tetrabromophthalic anhydride and het anhydride are included, and tertiary amines and imidazole derivatives are generally used as curing accelerators. Specific examples include “Epicure 134A (trade name)” manufactured by Yuka Shell Epoxy.

  Examples of the phenol resin include novolak type phenol resins, and generally a curing accelerator is used in combination.

  Examples of the polyamide resin include polyamide obtained from dimer acid and polyamine which are dimers of unsaturated fatty acids.

  A mercaptan compound is an aliphatic polysulfide polymer having a mercapto group -SH at both ends of the molecular structural formula, and it does not react with an epoxy resin by itself, so it needs to be used in combination with the polyamine or tertiary amine. It is. Specific examples of mercaptan compounds include “Cup Cure 3800 (trade name)” manufactured by Yuka Shell Epoxy Co., Ltd.

  The blending ratio of the epoxy resin and the curing agent is determined by the ratio between the number of epoxy groups or hydroxyl groups in the epoxy resin and the number of functional groups in the curing agent that reacts with the epoxy groups or hydroxyl groups. For example, when polyamine is used as the curing agent, assuming that the epoxy equivalent of the epoxy resin is E and the amine equivalent of the polyamine is A, it is polyamine (0.8 to 1.2) × Ag with respect to the epoxy resin Eg. Here, the epoxy equivalent is the number of grams of epoxy resin containing 1 gram equivalent of epoxy groups, and the amine equivalent is the number of grams of polyamine containing 1 gram equivalent of active hydrogen that reacts with epoxy groups. Therefore, the blending weight ratio of the epoxy resin and the curing agent varies depending on the type of epoxy resin and the type of curing agent used, but is set as follows. That is, it mix | blends in the ratio shown in Table 1 with respect to the epoxy resin Eg. Here, E is an epoxy equivalent value of the epoxy resin.

  Moreover, what is necessary is just to mix | blend 1-20g of hardening accelerators with respect to the epoxy resin Eg, when using together a hardening accelerator.

  As the PTFE of the composition of the lubricating coating 42, the above-described high molecular weight PTFE is used.

  The reactive silicone oil having an epoxy group is a silicone oil in which a part of methyl group of dimethylpolysiloxane is substituted with a functional group having an epoxy group. For example, it is represented by the following formula (1), (2) or (3).

  In the formulas (1), (2) and (3), X represents a functional group having an epoxy group, for example, the following formulas (4), (5), (6) and (7), and m is 5 to 10,000. And n is an integer of 2 to 100.

  Of the above-mentioned reactive silcorn oils having an epoxy group, silicone oils of the following formulas (8) and (9) are preferred.

  In formulas (8) and (9), m is an integer of 5 to 10,000, and n is an integer of 2 to 100.

  The reactive silicone oil having an epoxy group is an oily substance having a linear structure, but forms a three-dimensional network structure by reacting with triazine thiol described later. This three-dimensional network structure is no longer oily, but retains lubricity. The three-dimensional network structure plays a role of improving the toughness of the lubricating coating.

  Triazine thiol is represented by the following formula (10).

In formula (10), A is a mercapto group —SH, a dibutylamino group —N (C ₄ H 9) ₂ , or an anilino group —NHC ₆ H ₅ .

  As described above, the triazine thiol has a role as a crosslinking agent for the reactive silicone oil having an epoxy group, and causes the reactive silicone oil having an epoxy group to have a three-dimensional network structure.

  Triazine thiol has been conventionally used as a crosslinking agent for rubber and vinyl chloride, as an adhesive between metal and rubber, and as a metal surface treatment agent. It is extremely reactive and reacts with the epoxy resin to form a lubrication film to firmly bond with the three-dimensional network structure of the silicone oil having the epoxy group and also with the base surface (stainless steel plate 41). It is thought that it also plays a role of improving the adhesive strength between the substrate and the coating.

  The mixing ratio of the triazine thiol to the reactive silicone oil having an epoxy group may be more than the amount necessary to crosslink the silicone oil having an epoxy group to form a three-dimensional network structure, preferably (the mixing of triazine thiol) (Weight) / (blending weight of reactive silicone oil having epoxy group) = 0.03-1.

  The compounding amount of the reactive silicone oil having an epoxy group and triazine thiol is 2 to 30 with respect to 100 parts by weight of the sum of the epoxy resin, the curing agent and PTFE. Part by weight, preferably 5 to 20 parts by weight. When the blending ratio is less than 2 parts by weight, the lubricity cannot be obtained, and when it exceeds 30 parts by weight, the mechanical strength of the lubricating coating is significantly reduced.

  The above-mentioned sliding seismic isolation device 1 exhibits seismic isolation performance by itself, but after the relative sliding displacement in the horizontal direction occurs between the smooth plate 7 and the sliding member 5, the upper structure G is initially set. The function to return to the position (origin position) is not enough. As shown in FIG. 7, as a spring device that generates a spring force in the horizontal direction between the upper structure G and the lower structure B, a laminated rubber bearing device 45 with a lead plug that is filled and held with a lead plug P is provided. The residual displacement of the upper structure G can be reduced by using the seismic isolation bearing structure 46 in combination with the sliding isolation system 1. Further, since the sliding friction coefficient between the smooth plate 7 and the surface material 16 of the sliding member 5 in the sliding seismic isolation device 1 shows a low value of 0.02 or less, the upper structure is kept while keeping the acceleration of the sliding start small. The seismic isolation cycle of G can be lengthened. As a result, sufficient seismic isolation function is demonstrated from large to small seismic forces.

  Next, the present invention will be described in detail based on examples. In addition, this invention is not limited to these Examples at all.

[Production of smooth plate]
A rectangular stainless steel plate (SUS304) having a side of 1300 mm was prepared, and one surface of the stainless steel plate was roughened by shot blasting and degreased. “Epicoat 828 (trade name)” manufactured by Yuka Shell Epoxy Co., Ltd. having an epoxy equivalent of 190 as an epoxy resin, and “Epicure 113 (trade name)” manufactured by Yuka Shell Epoxy, a modified alicyclic amine type, as a curing agent. Using PTFE, “Polyflon (trade name)” manufactured by Daikin Industries, Ltd., with a total amount of 100 parts by weight of these epoxy resin, curing agent and PTFE, as a reactive silicone oil having an epoxy group, in the side chain As a triazine thiol, 4.8 parts by weight of an epoxy-modified silicone oil “KF-102 (trade name)” manufactured by Shin-Etsu Chemical Co., Ltd. having an epoxy equivalent of 3600 corresponding to the formula (9) having an alicyclic epoxy group 0.2 part by weight of 2-dibutylamino-4,6-dithiol-s-triazine “Disnet DB (trade name)” manufactured by Kasei Co., Ltd. The total solid content of these components (epoxy resin, curing agent and PTFE: 95.24% by weight, epoxy-modified silicone oil: 4.57% by weight, triazine thiol: 0.19% by weight) is 33% by weight ( (Epoxy resin, curing agent, PTFE: 31.43% by weight, epoxy-modified silicone oil: 1.51% by weight, triazine thiol: 0.06% by weight) A coating film is formed on the roughened surface of the stainless steel plate by spraying means, preliminarily dried in a hot air drying furnace for 30 minutes to dissipate the solvent, and then heated and baked at a temperature of 180 ° C. for 30 minutes. And a lubricating film having a thickness of 40 μm was formed, and this was used as a smooth plate.

[Preparation of sliding member base]
A plain woven glass fiber woven fabric is prepared as a fiber woven fabric, and the glass fiber woven fabric is passed by a feed roller through a container storing an epoxy resin varnish having a resin solid content of 64.5% by weight, and the glass fiber woven fabric. The resin varnish is applied to the surface of the glass fiber, and the resin varnish applied to the surface of the glass fiber woven fabric is impregnated to the gap between the fiber structures by a compression roll. The reaction was advanced to obtain a prepreg (resin-processed glass fiber woven fabric). This prepreg is cut into a rectangular shape with a side of 250 mm, and a plurality of the prepregs are stacked to be laminated, and then heated and pressure-molded in the laminating direction, and a thickness comprising a laminate of fiber woven cloth reinforced thermosetting synthetic resin An 8 mm substrate was produced. In addition, R chamfering was performed on the four corners of the rectangular base.

[Production of surface material]
A plain woven glass fiber woven fabric is prepared as a woven fabric, and this glass fiber woven fabric is filled and coated with “Full-on PTFE Dispersion XAD912 (trade name)” manufactured by Asahi Glass Co., Ltd. as a PTFE dispersion. A woven fabric layer made of 0.2 mm glass fiber woven fabric was prepared. Next, a PTFE sheet having a thickness of 0.2 mm is placed on the surface of the woven fabric layer, and heated and pressed to fuse the PTFE together, and the PTFE sheet is fusion bonded to one surface of the woven fabric layer. This was used as the surface layer material.

(Preparation of lubricating composition)
Preparation of Lubricating Composition (1) Asahi Kasei Wacker exhibiting 10 to 25% by weight of dimethyl silicone oil [“KF96H (trade name)” manufactured by Shin-Etsu Chemical Co., Ltd.] as a silicone oil and a viscosity of 300 cSt at 50 ° C. as a silicone wax 25% to 30% by weight of “Silicone Wax W23 (trade name)” manufactured by Silicone, 25% by weight of “MCA (trade name)” manufactured by Mitsubishi Chemical Corporation as melamine cyanurate, and high molecular weight PTFE [manufactured by Asahi Glass Co., Ltd.] “Fluon G163 (trade name)” of 25 to 40% by weight was charged into a Henschel mixer to prepare a mixture. The obtained mixture was heated to a temperature of 80 ° C. higher than the melting point of the silicone wax in the component, and melt kneaded to prepare a kneaded product of the lubricating composition (1). The component composition of this lubricating composition is shown in Table 2.

(Table 2)
Example 1 2 3 4
Lubricating composition (1)
Silicone oil 10 10 20 25
Silicone wax 25 30 30 25
Melamine cyanurate 25 25 25 25
PTFE (high molecular weight) 40 35 25 25

Preparation of Lubricating Composition (2) 10 to 25% by weight of dimethyl silicone oil (same as above), 25% by weight of silicone wax (same as above) and 25% by weight of melamine cyanurate (same as above) as silicone oil , 12.5-20% by weight of high molecular weight PTFE (same as above) and 10-20% by weight of low molecular weight PTFE ["Fluon L169J (trade name)" manufactured by Asahi Glass Co., Ltd.] as PTFE are mixed into a Henschel mixer. Was made. The obtained mixture was heated to a temperature of 80 ° C. above the melting point of the silicone wax in the components, and melt kneaded to prepare a kneaded product of the lubricating composition (2). Table 3 shows the component composition of this lubricating composition.

(Table 3)
Example 5 6 7 8
Lubricating composition (2)
Silicone oil 10 20 25 25
Silicone wax 25 25 25 25
Melamine cyanurate 25 25 25 25
PTFE (high molecular weight) 20 20 15 12.5
PTFE (low molecular weight) 20 10 10 12.5

[Production of sliding members (1) to (8) and sliding seismic isolation bearings (1) to (8))
After the surface layer material is integrally bonded to one surface of the base body via an adhesive (the thickness of the base body is 8 mm, the thickness of the surface layer material is 0.4 mm), the surface layer material has a thickness direction from the surface of the PTFE sheet. Is drilled and opened on the surface of the PTFE sheet to form 288 circular recesses having a diameter of 8 mm and a depth of 1 mm extending to a part of the substrate (the area of the recess openings relative to the surface layer surface area) The total of 23.2%).

  After forming the kneaded products of the lubricating compositions (1) and (2) shown in Table 2 and Table 3 into sheets, and placing them on the PTFE sheet of the surface layer material in which circular recesses are formed, Compression-molding in the thickness direction of the sliding member, filling the circular recesses with the kneaded product of the lubricating compositions (1) and (2) and forming a coating layer of the kneaded product on the surface of the PTFE sheet; This was made into sliding member (1) thru | or (8).

  Then, these sliding members (1) to (8) are fitted and fixed to the recesses formed in the thick reinforcing plate of the laminated rubber body through an adhesive, respectively, and this is attached to the sliding seismic isolation bearings (1) to (1) to (8). (8).

[Comparative example]
A prepreg (surface layer material) composed of 30% by weight of aramid fiber woven fabric, 39% by weight of epoxy resin and 31% by weight of PTFE was placed on a prepreg (substrate) obtained by impregnating a plain woven cotton fabric with a phenol resin varnish. The substrate and the surface layer material were joined together by heating and pressure forming, and this was used as a sliding member. The sliding member was fitted and fixed to a recess formed in the thick reinforcing plate of the laminated rubber body via an adhesive, thereby forming a sliding seismic isolation bearing. The same smooth plate as the above was used for the smooth plate as the counterpart material.

  Next, the friction performance was tested under the test conditions 1 and 2 shown below for the above-mentioned sliding seismic isolation bearings (1) to (8) and the sliding isolation bearing of the comparative example.

<Test condition 1>
Surface pressure 20N / mm ²
Speed 100mm / sec ~ 600mm / sec
Mating material Above smooth plate Lubrication No lubrication Test method A smooth plate (with the lubrication coating facing upward) is fixed on the stand of a biaxial testing machine, and the surface layer material of the sliding member of the sliding seismic isolation bearing is filled on the smooth plate. And a load is applied to the sliding seismic isolation bearing so that the surface pressure is 20 N / mm ² (constant), and the smooth plate side is vibrated at the above speed (± 100 mm). The coefficient of friction was measured.

<Test condition 2>
Surface pressure 20N / mm ²
Speed 100mm / sec
Mating material Smooth plate Lubrication No lubrication Sliding distance 400m
Test method A flat plate (with the lubricating coating facing upward) is fixed on the platform of the biaxial testing machine, and the surface layer material of the sliding member of the sliding seismic isolation bearing is slidably applied to the smooth plate through the filling coating layer. In addition, a load is applied to the sliding seismic isolation bearing so that the surface pressure is 20 N / mm ² (constant), and the smooth plate side is vibrated (± 100 mm) at the above speed, and the sliding distances are 80 m, 160 m, and 240 m. , 320 m, and 400 m, respectively, were measured for the coefficient of friction.

  Table 4 shows the test results of the sliding seismic isolation bearings (1) to (8) performed in the test condition 1 and the comparative example, and the sliding seismic isolation bearings (1) to (8) performed in the test condition 2 Table 5 shows the test results of the sliding isolation bearings of the comparative example.

  The test condition 1 is a speed dependency test, and as can be seen from the test results, in the sliding seismic isolation bearings of Examples 1 to 8, formed on the surface of the PTFE sheet as the surface material of the sliding member. Stable sliding with a low coefficient of friction between the filled coating layer and the lubrication film of the smooth plate is performed, and the variation of the coefficient of friction is extremely small with respect to the speed change, in other words, the speed dependency is extremely high. In contrast, the comparative example of the base-isolation bearing showed a high coefficient of friction throughout the test time, and an increase in the coefficient of friction was observed as the speed changed. Indicated.

  The test condition 2 is an endurance test. As can be seen from the test results, in the sliding seismic isolation bearings of Examples 1 to 8, the friction coefficient shows a low value of 0.02 or less throughout the sliding distance and is stable. In contrast, the sliding isolation bearing of the comparative example showed a high coefficient of friction throughout the sliding distance.

  From these test results, the slip-isolation bearings of Examples 1 to 8 are excellent in durability, and the seismic isolation cycle can be extended while keeping the acceleration of the start small, so that a large-scale earthquake It is possible to reduce the transmission to the superstructure from the vibration caused by the small-scale earthquake or the like, and achieve reliable protection of the superstructure.

  Residual displacement of the upper structure is achieved by using a laminated rubber bearing device with a lead plug inside that is filled and held as a spring device that generates a spring force in the horizontal direction between the upper structure and the lower structure. In addition, since the friction coefficient between the smooth plate and the surface layer material of the sliding member in the sliding seismic isolation device shows a low value of 0.02 or less, the upper part is kept while keeping the acceleration of the sliding out small. Since the seismic isolation cycle of the structure can be lengthened, sufficient seismic isolation function can be demonstrated from large to small seismic forces.

It is sectional drawing of the sliding seismic isolation bearing apparatus of this invention. It is a top view of the sliding member in a sliding seismic isolation bearing apparatus. It is the III-III sectional view taken on the line of FIG. It is explanatory drawing which shows the manufacturing process of the base | substrate of a sliding member. It is a perspective view which shows the lamination state of a prepreg. It is a top view of other examples of a sliding member. It is sectional drawing which shows a sliding seismic isolation bearing structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sliding seismic isolation device 2 Reinforcement plate 3 Rubber layer 4 Laminated rubber body 5 Sliding member 6 Sliding seismic isolation bearing 7 Smooth plate 8 Thin reinforcing plate 9, 10 Thick reinforcing plate 14 Base 15 Surface 16 Surface layer material 17 Recess 18 Filling coating Layer 19 Woven 20 PTFE
21 Woven fabric layer 22 Surface 23 PTFE sheet

Claims (12)

A laminated rubber body formed by alternately laminating reinforcing plates and rubber layers and fixed to one of the upper structure and the lower structure, and one of the upper surface and the lower surface of the laminated rubber body A sliding member fixed to the sliding member, and a smooth plate that is slidably abutted on the sliding member and fixed to the other of the upper structure and the lower structure. a top surface and a fixed base in either one on one surface of the lower surface of the surface layer material, which is joined at one surface to the surface of the other side of the base, open at the other surface of the surface layer material And at least one recess formed in the base material and the surface layer material, and a filling coating layer made of a lubricating composition that fills the recess and covers the other surface of the surface material. Fiber woven fabric reinforced thermosetting synthetic resin A laminated body, the surface layer material is bonded on one surface to the surface of the other side of the base, and woven into polytetrafluoroethylene resin composed of at least one of the fibers of the inorganic fibers and organic fibers are filled coated and a fabric layer composed of a tetrafluoroethylene resin sheet on the other side surface of together are joined at one surface and the other surface was coated with a filling cover layer of the fabric layers, the at least one The recess is opened on the other surface of the tetrafluoroethylene resin sheet, and the filling coating layer is slidably in contact with the smooth plate on the surface, and the lubricating composition of the filling coating layer is A sliding seismic isolation device comprising 5 to 30% by weight of silicone oil, 20 to 40% by weight of silicone wax, 20 to 40% by weight of melamine cyanurate, and the remainder containing ethylene tetrafluoride resin. The reinforcing plate includes a thin reinforcing plate alternately laminated with a rubber layer, and a pair of thick reinforcing plates fixed to each of the uppermost and lowermost rubber layers . sliding isolation bearing device according to claim 1 which is fixed to either one of the upper and lower surfaces of the one joined to the thick reinforcing plate laminated rubber body in one surface. The reinforcing plate includes a thin reinforcing plate alternately laminated with a rubber layer, and a pair of thick reinforcing plates fixed to each of the uppermost and lowermost rubber layers. The sliding seismic isolation device according to claim 1, wherein a part of the thick reinforcing plate on the base side is embedded and fixed to either the upper surface or the lower surface of the laminated rubber body.   The sliding base isolation device according to any one of claims 1 to 3, wherein the inorganic fibers include at least one of glass fibers and carbon fibers.   The sliding base isolation device according to any one of claims 1 to 4, wherein the organic fiber includes at least one of cotton fiber, aramid fiber, and aromatic polyester fiber.   The sliding seismic isolation device according to any one of claims 1 to 5, wherein the concave portion includes at least one of a cylindrical concave portion or a concave portion formed of two rectangular long grooves orthogonal to each other.   The smooth plate is composed of a stainless steel plate and a lubricating coating formed on one surface of the stainless steel plate, and the lubricating coating is an epoxy resin, a curing agent, an ethylene tetrafluoride resin, and a reactive group having an epoxy group. The sliding seismic isolation device according to any one of claims 1 to 6, comprising a composition containing silicone oil and triazine thiol.   8. The composition according to claim 7, wherein the composition comprises 100 parts by weight of the sum of the epoxy resin, the curing agent, and the ethylene tetrafluoride resin, and 2 to 30 parts by weight of the sum of the reactive silicone oil having an epoxy group and the triazine thiol. Sliding seismic isolation device.   The sliding isolation bearing according to claim 7 or 8, wherein the blending ratio of the epoxy resin and the curing agent is epoxy resin: curing agent = E: 10 to E: 300, where E is an epoxy equivalent of the epoxy resin. apparatus.   The slipping ratio according to any one of claims 7 to 9, wherein a mixing ratio of the reactive silicone oil having an epoxy group and the triazine thiol is a reactive silicone oil having a triazine thiol / epoxy group = 0.03-1. Seismic isolation device.   11. A seismic isolation bearing structure using the sliding seismic isolation bearing apparatus according to any one of claims 1 to 10 and a laminated rubber bearing apparatus including a lead plug in which a lead plug is filled and held. A base made of a laminate of woven fiber reinforced thermosetting synthetic resin, and the surface layer member which is joined at one surface to the one surface of the substrate, the substrate and surface layer material with an opening at the other surface of the surface layer material At least one concave portion formed on the surface of the base material, and a filling coating layer filled with the concave portion and covering the other surface of the surface layer material. joined at one surface to the surface, and a fabric layer woven fabric tetrafluoroethylene resin composed of at least one of the fibers of the inorganic fibers and organic fibers filled coating, the other side of the fabric layer A tetrafluoroethylene resin sheet bonded to the surface on one surface and the other surface coated with a filling coating layer, wherein the at least one recess is formed on the other surface of the tetrafluoroethylene resin sheet. Open The lubricating composition of packed coating layer, characterized in that 20 to 40 wt% silicone oil 5 to 30 wt% silicone wax and 20-40 wt% melamine cyanurate and the balance and a tetrafluoroethylene resin A sliding member.

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