WO2007026418A1

WO2007026418A1 - Base isolation and seismic control device

Info

Publication number: WO2007026418A1
Application number: PCT/JP2005/015889
Authority: WO
Inventors: Tsutomu Kuwata
Original assignee: Tsutomu Kuwata
Priority date: 2005-08-31
Filing date: 2005-08-31
Publication date: 2007-03-08
Also published as: JPWO2007026418A1; JP4695650B2

Abstract

A base isolation and seismic control device capable of preventing wooden, steel-frame, and concrete buildings from being destroyed or collapsed, furniture from being turned over, and piping installation from being damaged by using it in these buildings to reduce vibration by an earthquake applied to these buildings. The device is characterized in that a laminar elastic body formed of a plurality of layers with different hardnesses is fitted into a tubular rigid body opened at least upward, a spiral rod having at least one of a steel line and a resin line spirally formed thereon is vertically passed through the core of the laminar elastic body, and one end of the spiral rod is connected to the bottom part of the tubular rigid body and the other end thereof is fixed to the base or column of the building or to the fixing device for fixing the base or the column, and the device is used by fixing to the intermediate part of the building between the foundation and the base or the column. A suction cup elastic body having a suction cup-like projection on the surface thereof is desirably installed at an intermediate position between the base isolation and seismic control device and the base or the column.

Description

Specification

Seismic isolation and vibration control equipment

Technical field

[0001] The present invention is used for wooden, steel-framed, or concrete-based buildings, etc., to reduce vibrations caused by earthquakes, and to prevent the destruction or collapse of powerful buildings. This is related to seismic isolation systems that contribute to prevention of furniture toppling and reduction of damage to equipment piping.

Background art

[0002] Conventionally, as a seismic isolation device for reducing the response to the earthquake motion received by a building, a device that suppresses shaking by inserting a bearing between the building and the foundation, is said to have been developed in the 1970s in France etc. There is a device that suppresses the transmission of vibrations to the building by supporting the building with laminated rubber made of thin rubber and steel plates. Later, an apparatus was developed that used a combination of an isolator typified by the laminated rubber and a damper. Isolators are generally layers of alternating layers of rubber and steel plates that serve to cut off the ground and buildings. However, using an isolator alone will reduce the shaking of the earthquake, and the shaking of the building will not stop easily. Therefore, a damper is installed to try to absorb the shaking of the earthquake in the lower part of the building. Patent Document 1 and Patent Document 2 are examples of seismic isolation devices that combine an isolator and a damper, respectively.

[0003] Patent Document 3 discloses an invention (an embedded seismic device for a wooden house) in which a seismic device is embedded in foundation concrete. The seismic device of the present invention has the effect of suppressing the vibration damping effect because the movement between the two elastic materials is suppressed in that the two elastic materials having different elastic coefficients are joined and fitted inside the cylindrical rigid body. To reduce. Further, the writing force in the specification and drawings is not clear about the swinging mechanism of the swinging member and the shaft member connecting them, and even if the swinging occurs, the swinging member simply swings through the shaft member. Moving alone effectively suppresses shaking 1, especially for large shaking caused by a large earthquake.

Patent Document 1: JP 2002-201816

Patent Document 2: JP 2003-155838 A Patent Document 3: Japanese Patent Laid-Open No. 9-158533

Disclosure of the invention

Problems to be solved by the invention

[0004] The inventor is an isolator as a result of repeatedly conducting horizontal force tests on basic characteristics of seismic isolation devices, etc., and diligently researching factors, materials, and structures that contribute to energy absorption performance. It was discovered that a combination of elastic bodies with different structures and hardnesses would have a great impact on seismic isolation performance.Surprisingly, spiral wires such as steel or grease The spiral rod force formed in the shape of the damper was conceived by the present invention by knowing that the damping performance, which is the characteristic of the damper, was appropriately applied, the response acceleration was reduced, and the relative displacement was within the appropriate range. The purpose of the present invention is to improve the energy absorption performance, which is a problem in conventional seismic devices, and reduce the vibration caused by earthquakes to buildings and the like, thereby preventing the destruction and collapse of such buildings. We will provide a seismic isolation system that will effectively prevent the fall of furniture and reduce damage to equipment piping.

Means for solving the problem

[0005] In order to solve the above-mentioned problems, the present invention inserts a layered elastic body having a multi-layer force having different hardnesses into a cylindrical rigid body that opens at least upward, and steel is formed in the core of the layered elastic body. A spiral rod formed by spirally forming at least one of the wire rods and the resin-based wire rods is vertically penetrated, and one end of the spiral rod is connected to the bottom of the cylindrical rigid body. The seismic isolation / seismic device with the other end connected to the foundation or pillar of the building or the fixture to fix the foundation or pillar is fixed between the foundation of the building and the foundation or pillar. Seismic isolation system (claim 1).

[0006] Further, in order to solve the above-described problems, the present invention is configured to insert a layered elastic body having a plurality of layers having different hardnesses into a cylindrical rigid body that opens at least upward, and a core of the layered elastic body. A spiral rod with at least one of a steel-based wire or a resin-based wire formed in a spiral shape is penetrated in the top and bottom, and a slide frame is attached to the upper edge of the cylindrical rigid body. Place a sucker elastic body with a sucker-like protrusion on the entire surface of at least one side of the thick elastic plate body that has a through hole in the center, and the upper end of the layered elastic body located in the inner layer in the through hole. A seismic isolation device characterized in that it is sandwiched between the slide frame and the fixed frame in a fitted state, and the fixed frame and the cylindrical rigid body bottom are connected by the noise rod. (Claim 2).

[0007] In order to solve the above-mentioned problems, the present invention provides the above seismic isolation device for mounting or embedding on a base concrete, and fixing the seismic isolation device on the seismic isolation / control device. It is preferable to use a seismic isolation / seismic control device characterized by fixing the foundation solstice (claim 3).

[0008] Further, in order to solve the above-described problems, the present invention is configured to insert a layered elastic body composed of a plurality of layers having different hardnesses into a cylindrical rigid body that opens at least upward, and a core of the layered elastic body. A spiral rod formed by spirally forming at least one of a steel-based wire or a resin-based wire is inserted in the section, and a slide frame is placed on the upper edge of the cylindrical rigid body. Then, fit the sucker elastic body provided with sucker-like protrusions on the entire surface of at least one side of the thick elastic plate having a through hole in the center, and the upper end of the layered elastic body located in the inner layer into the through hole. The upper and lower ends of the spiral rod are connected to the fixing means and the bottom of the cylindrical rigid body, respectively, to provide a seismic isolation / damping device (claim 4).

[0009] Further, in order to solve the above-described problems, the present invention provides the above-mentioned seismic isolation system for mounting or embedding in a foundation concrete, and is connected to the upper end portion of one end force S spiral rod. By connecting the other end of the fixing means to the pillar or base, the base or pillar is fixed on the base isolation or vibration control apparatus. Preferred (claim 5).

[0010] Further, in order to solve the above-described problems, the present invention inserts a layered elastic body having a plurality of layers having different hardnesses into a cylindrical rigid body that opens at least upward, and a core of the layered elastic body. A stainless steel rod or at least one kind of wire rod formed in a spiral shape is penetrated in the part, and a slide frame is placed on the upper edge of the cylindrical rigid body Further, a fixed frame is placed on the slide frame, and the bottom part contacting the lower end of the layered elastic body is slidable on the wall surface of the cylindrical rigid body by the snoral rod and coupled to the fixed frame. A seismic isolation / seismic control device characterized by the above (claim 6).

[0011] Further, in order to solve the above-mentioned problems, the present invention provides a base controller with the above-mentioned seismic isolation system. It is preferable to provide a seismic isolation / seismic control device characterized in that it is mounted on or embedded in the cleat, and the foundation base column is fixed on the seismic isolation / seismic control device by fixing means. )

[0012] Further, in order to solve the above-mentioned problems, the present invention provides the seismic isolation / seismic control device according to the present invention, wherein the layered elastic body has three layers of elastic material forces having different hardness and is close to the core portion. It is characterized in that the hardness of the elastic material in the layer is 80 degrees + —5 degrees, the hardness of the elastic material in the intermediate layer is 90 degrees + —5 degrees, and the hardness of the elastic material in the outer layer is 60 degrees + —5 degrees force. It is preferable to use a seismic isolation / damping device (claim 8).

The invention's effect

[0013] The seismic isolation system of the present invention is an integrated seismic isolation system in which a damper made of a spiral rod is incorporated in an isolator having a layered elastic force as described above. Damping performance of vibration is remarkably improved, and by installing a sucker elastic body between the base or the column, small vibrations are also absorbed, and the seismic isolation system according to the present invention is installed in a seismic isolation system such as a building. When used as a seismic control device, even in the event of a large earthquake, the vibration of the earthquake will be significantly attenuated and the ability to suppress shaking will minimize the shaking of the building, and damage and collapse of the building will be prevented It is effective in preventing furniture from falling and reducing damage to equipment piping. In addition, compared to the case where a conventional isolator and damper are used separately, the equipment itself is S compact so it does not take up space for installation. BEST MODE FOR CARRYING OUT THE INVENTION

[0014] The best mode for carrying out the present invention (hereinafter referred to as "embodiment") will be described in detail below, but the present invention is not limited in any way by the powerful embodiment. . The seismic isolation / seismic control device according to the first embodiment of the present invention includes the inventions of claims 1, 2, 3 and 8, and the seismic isolation / seismic control according to the second embodiment of the present invention. The device includes the inventions of claims 1, 4, 5, and 8, and the seismic isolation / seismic control device according to the third embodiment of the invention includes the inventions of claims 1, 6, 7, and 8. Including. Fig. 1 shows the seismic isolation system that can be applied to the first embodiment of the present invention, and Figs. 2, 3, and 4 show the seismic isolation system that is applied to the second embodiment of the present invention. FIGS. 5 and 6 show a seismic isolation system according to the third embodiment of the present invention. In each figure, if the same parts or parts are shown, they are common It was decided to attach the symbol.

[0015] FIG. 1 is an explanatory view showing a seismic isolation / seismic control device according to the first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a seismic isolation / seismic control according to the first embodiment. The cylindrical rigid body 2 is made of a metal cylinder that opens upward, and a flange 22 is provided at the upper edge of the cylindrical rigid body 2. The lower end of the cylindrical rigid body 2 protrudes to the periphery. 21 is provided. Inside the cylindrical rigid body 2, a three-layered elastic body 3 having different hardness and fitted with a snoral rod 4 in the core is fitted. As shown in Fig. 7 (a), the snoral rod 4 is composed of a damper section 41 with a high degree of softness, in which at least one of the steel or striated filaments is spirally formed. Bolts 43 and 43 are fixed to both ends via cylindrical members 42 and 42 having equal strength made of steel or resin. Steel-based filaments include steel filaments referred to as so-called steel wires. Examples of the resin-based filaments include aramid fibers, carbon fibers, other thermoplastic resins, and thermosetting resins. In any case, materials that are strong and flexible enough to follow the shaking during an earthquake are preferred.

[0016] Then, the spiral rod 4 is used as a core portion, and the entire structure excluding both bolts is formed into a cylindrical shape with a relatively hard elastic body, thereby forming the first layer 31 of the layered elastic body 3. Further, a hard second layer 32 and a soft outer layer are formed around the first layer, and a third layer 33 is formed outside the second layer 32. In this way, the layers having different hardnesses are brought into close contact with each other without being joined, so that the layers interfere with each other, and the vibration is attenuated following the movement of the spiral rod 4. Furthermore, by forming the filaments in a spiral shape, it was possible to follow both vertical and horizontal deformations.

[0017] The material of the layered elastic body 3 is not particularly limited. For example, natural rubber or synthetic rubber, for example, isoprene rubber, butadiene rubber, SBR, NBR, silicone rubber, urethane rubber, chloroprene rubber (CR rubber) It is preferable to use ethylene'propylene rubber (EPR), ethylene'propylene.gen rubber (EPDM), other elastomers alone or in combination. The hardness of the rubber can be appropriately adjusted by the mixing ratio of the vulcanizing agent or the crosslinking agent, that is, the rubber crosslinking density. Harder rubbers increase the amount of vulcanizing agent or cross-linking agent added to increase rubber cross-linking density, while softer soft rubbers reduce the amount of vulcanizing agent or cross-linking agent added. It can be obtained by reducing the crosslinking density of the rubber. Further, a foaming agent may be added to rubber to increase the elastic modulus by using foamed rubber containing bubbles. If the hardness is softened, the ground and construction Forces that insulate objects and approach to absolute seismic isolation decrease response acceleration. Relative variation increases, and the two conflict. Therefore, in the seismic isolation system of the present invention, the layered elastic body 3 keeps the balance between response acceleration and relative variation, and the spiral rod 4 is used as a damper to reduce the relative variation of shaking caused by the earthquake. RU

That is, the hardness of each layer of the layered elastic body 3 is such that the second layer 32 of the intermediate layer is the hardest, the first layer 31 close to the core is slightly softer than the second layer 32, and the outer third layer 32 It is preferred to design layer 33 to be the softest. By making the first layer slightly softer than the second layer, it is possible to avoid constraining the freedom of the spiral rod 4. More specifically, the hardness of the layered elastic body 3 is 80 ° + −5 ° for the first layer of elastic material close to the core, and 90 ° for the second layer of elastic material as the intermediate layer. It is preferable that the hardness of the elastic material of the third layer which is + −5 degrees is 60 degrees + −5 degrees. However, the examples of hardness given here are merely examples, and are not limited to such hardness. Usually, it is preferable to appropriately select the most appropriate combination for the design load from various combinations of hardness.

[0019] In the above device, the lower end of the spiral rod 4 fixed to the bottom 21 of the cylindrical rigid body 2 is the basic structure of the seismic isolation / seismic control device according to the present invention. Place or embed the device on the foundation concrete of the building, place the foundation or pillar of the building on the upper part of the seismic isolation system and place the upper end of the spiral rod 4 on the foundation of the building Or by fixing directly to the pillar or through a slide frame or fixed frame, the foundation concrete and the building shall be isolated from vibration by the seismic isolation system to suppress the shaking of the building. It becomes.

[0020] Further, in the seismic isolation / seismic control device 1 that is effective in the first embodiment of the present invention, in addition to the basic structure of the seismic isolation / seismic control device described above, The sucker elastic body 6 is sandwiched between the columns. That is, as shown in FIG. 1 (b), a sucker elastic body 6 having sucker-like protrusions is provided on one or both surfaces of a rectangular thick elastic plate having a through hole in the center, and the through hole With the upper end of the first layer 31 of the layered elastic body 3 fitted to the suction frame, the suction cup elastic body 6 is sandwiched between the slide frame 5 and the fixed frame 7 and the upper end of the spiral rod 4 is It is connected to the fixed frame 7 and connects the fixed frame 7 and the bottom 21 of the cylindrical rigid body. The fixed frame 7 is a rectangular frame that is almost the same size as the suction cup elastic body 6 and has a U-shaped metal frame force. A through hole is formed in the center of the rod to insert the upper end bolt of the spiral rod 4. On both sides of the upper surface of the fixed frame 7, there are provided insertion gaps for inserting the bottom of the L-shaped fixed plate 8 for fixing the base or column (see FIG. 6).

As shown in FIG. 8, the sucker elastic body 6 is provided with a number of suction cups 61 having different diameters and heights on both surfaces of the thick plate-like elastic body 62. The suction cup elastic body 6 is inserted between the seismic isolation device 1 and the base or column to support the weight of the building. Therefore, the suction rubber elastic body 6 is a natural rubber or synthetic rubber listed as the material of the layered elastic body 3. Hard hardness! , Prefer to use the material. In addition, a synthetic resin type vibration absorbing material may be used. By sandwiching the powerful suction cup elastic body 6 between the base isolation / seismic control device 1 and the base or column, there is an effect of absorbing small vibrations in particular due to the earthquake. In addition, the suction force S is adsorbed on the contact surface such as the slide frame, foundation or column to prevent lateral displacement. On the other hand, the slide frame 5 located below the suction cup elastic body 6 is a smooth plate-like body made of metal such as stainless steel or synthetic resin, the upper surface is sucked by the suction cup of the suction cup elastic body 6, and the lower surface is the second. The third layered elastic body 3 and the cylindrical rigid body 2 are placed in contact with the upper surface of the flange 22. In the event of an earthquake, the cylindrical rigid body 2 and the slide frame 5 slide against each other at the boundary surface between the slide frame 5 and the flange and the vibration is absorbed.

[0022] A method of installing the seismic isolation device 1 will be described. As shown in Fig. 9, the seismic isolation device 1 may be directly embedded and fixed in the foundation concrete S. As shown in Fig. 3, the foundation concrete S is provided with a concave groove M, and the groove It is also possible to mount the seismic isolation / seismic control device 1 to the base concrete S by placing a bolt hole in the projecting portion of the bottom 21 and driving in the anchor bolt 43. In order to fix the base F or the column to the seismic isolation / seismic control device 1, place the base F or the column on the fixed frame 7 and insert the bottom of the fixed plate 22 into the insertion gap of the fixed frame 7. The base F and the pillar may be fixed to the fixing plate 22 using screws, nails, bolts, etc. through the holes provided in the fixing plate 22. In any case, it is preferable that a gap of about 3 to 6 mm is provided between the base F or the column and the foundation concrete S so as to easily absorb the vertical vibration. In this way, it is preferable to install a plurality of seismic isolation devices 1 with appropriate intervals in consideration of the weight of the building.

Next, a seismic isolation / seismic control device 1 that works according to the second embodiment will be described with reference to the drawings.

As shown in Fig. 2 to Fig. 4, the seismic isolation / seismic control device 1 that is useful for this embodiment is the same as the first embodiment. In the seismic isolation device 1 that is effective in the situation, the fixed frame 7 is removed, and the base F and pillar P are directly placed on the suction cup elastic body 6 and fixed, and the seismic isolation and control in the embodiment is applied. Same as seismic device 1. In the seismic isolation system 1 shown in FIG. 2, a screw is connected to the upper end bolt of the spiral rod 4 using a joint 44, and the base F is fixed using this screw. The suction cup elastic body 6 is also held on the upper surface of the base F to enhance the vibration absorption efficiency. In the seismic isolation system 1 shown in Fig. 3, the screws are passed through the base F and fixed with the pillar P and the hole-down bracket 47 to prevent the pillar from coming off. In the seismic isolation system 1 shown in FIG. 4, the hozo-pipe 45 is embedded in the column, and the other end is connected to the upper end bolt of the spiral rod 4 and fixed to the base F to the column P, and In the same way, prevention of pillars from falling out is taken. Thus, even if the fixing frame 7 is removed, the suction cup elastic body 6 is placed with the upper end portion of the first layer of the layered elastic body 3 fitted in the through-hole 63, and the suction cup 61 further includes the base F and the column. Because it is adsorbed to P and slide frame 5, there will be no inadvertent misalignment! /.

[0024] Next, a seismic isolation / seismic control device that works according to the third embodiment will be described with reference to the drawings.

As shown in FIGS. 5 and 6, the seismic isolation / seismic control device 1 that is effective in this embodiment is a metal cylinder that opens upward in the seismic isolation / seismic control device that is effective in the first embodiment. Instead, a metal cylinder that opens upward and downward is used, and the suction cup elastic body 6 is removed, and the slide frame 5 and the fixed frame 7 are in direct contact with each other, and are fixed to the upper end bolt of the spiral rod 4 so that the spiral rod is fixed. The seismic isolation / seismic control device is the same as that of the first embodiment except that the bottom portion 21 of the door 4 is in contact with the bottom portion of the cylindrical elastic body so that the bottom portion 21 is in contact with the bottom portion. Same as 1. In this way, by making the bottom 21 slidable on the wall of the cylindrical rigid body without fixing, the lamellar elastic body 3 is easily deformed up and down due to shaking in the event of an earthquake. It is possible to increase the interference action and reduce the response acceleration.

[0025] Next, a horizontal force experiment was conducted to investigate basic characteristics of the seismic isolation / seismic control device that is effective in the embodiment. The experiment will be described below. The experiment was conducted at the Department of Architecture, Faculty of Engineering, Kanto Gakuin University.

The seismic isolation and vibration control device 1 and the base F, which are embedded in the concrete slab, are joined by bolts directly below the two columns of the cylindrical structure, which have compression and tension differences. It was. A detailed view of specimen T is shown in Fig. 9 (a) (numbers in the figure represent length in mm). The specimen T used in this experiment is the seismic isolation / seismic control device 1 according to the first embodiment, and the hardness of the first to third layers of the three-layered elastic body is 80 degrees in order, 90 degree and 60 degree ones were used. In addition, as a comparative example, the seismic isolation / damping device of the first embodiment uses a two-layered elastic body with different thickness and hardness instead of the three-layered elastic body. An experiment was also conducted on the fixed joint type test specimen in which changes in the horizontal and vertical directions were constrained by connecting the equipment and the base and concrete slabs with PC steel bars.

The upper and lower parts of the specimen T, which has a seismic isolation system between a wooden frame structure with a concrete slab, is attached to a horizontal force jig with a PC steel rod, and Fig. 9 (b) As shown in Fig. 5, a constant axial force of 60 kN in the vertical direction was loaded by an oil jack O of lOOOkN, and a positive and negative alternating force was applied by an actuator A of 700 kN in the horizontal direction. For 8 types of test specimens with 1/600, 1/450, 1/300, 1/200, 1/150, 1/100, 1/75, 1/50, repeatedly applied 3 cycles It was. For the measurement method, a high-sensitivity displacement meter was attached to the horizontal members of the beam and foundation, and the vertical members of the column, and the horizontal displacement, the column lifting displacement and the axial displacement of the device were measured. In addition, a pie gauge was attached to the slanted material, and the axial displacement caused by the streak was measured.

[0027] <Experimental result>

High-sensitivity displacement gauge force attached to the base Figure 10 shows the history curve for the measured shear car horizontal displacement. Fig. 10 (a) shows the hysteresis curve for the shear force and horizontal displacement when using the seismic isolation / seismic control device of the first embodiment, and Fig. 10 (b) uses a two-layered elastic layer. The hysteresis curve for the shear car horizontal displacement when the seismic isolation system is used is shown. From this figure, the seismic isolation / seismic control device using the three-layered elastic elastic seismic isolation device is more effective than the two-layered elastic elastic device. The fact that the hysteretic characteristics have a large absorption performance has been a component. In addition, through the experiment, it was confirmed that the seismic isolation / seismic control device that is effective in the present embodiment is excellent in attenuation and axial rigidity.

[0028] Assuming that the required resistance of the first floor in a two-story wooden building is lkNZm ² , the interlayer deformation angle But

The horizontal strength of this seismic isolation / seismic control device at lZl 50 rad was obtained from a shearing experiment with about 3-4 kN per unit. Therefore, the dominant surface product of the apparatus 1 per against need耐Ka is calculated as 3 to 4 m ^2. In addition, the above values corresponding to a mid-earthquake (allowable stress design) are considered to have a safety factor more than twice that of a large earthquake (final design).

[0029] The seismic isolation and damping device according to the first, second and third embodiments is a typical seismic isolation and damping device according to the present invention. For example, the suction cup elastic body 6 in the first to second embodiments may be used in the third embodiment by combining the features of the above-described embodiments. The seismic isolation system that is fixed to the base or column by the method shown in the second embodiment is also included in the present invention. In the above description, the description has been made mainly on the application of the seismic isolation / control device according to the present invention to a building. However, the seismic isolation / control device according to the present invention is applied only to a building. Then, for example, it is applied to large furniture and store fixtures to suppress shaking and prevent falls and damage. It goes without saying that the apparatus can be changed without departing from the gist of the present invention, and can be changed as much as possible.

Industrial applicability

[0030] While a large earthquake is predicted in recent years, the seismic isolation system according to the present invention improves the energy absorption performance, which is a problem in conventional seismic equipment, and causes earthquakes on buildings and the like. Therefore, the industrial applicability is extremely high.

Brief Description of Drawings

[0031] FIG. 1 is a partial cross-sectional view showing a seismic isolation and vibration control device that is effective in the first embodiment.

FIG. 2 is an explanatory view showing a state in which a base is fixed to a seismic isolation / seismic control device that is effective in the second embodiment.

FIG. 3 is an explanatory diagram showing a state in which a base is fixed to a seismic isolation / seismic control device that is effective in the second embodiment.

[Fig. 4] Explanatory drawing showing the base fixed to the seismic isolation / seismic control device that is the best of the second embodiment It is.

FIG. 5 is a partial cross-sectional view showing a seismic isolation / seismic control device that is effective in the third embodiment.

FIG. 6 is a perspective view showing a seismic isolation / seismic control device that is effective in the third embodiment.

FIG. 7 is an explanatory diagram in which a spiral rod and a first layer are formed thereon.

FIG. 8 is an explanatory view illustrating a sucker elastic body.

FIG. 9 is a detailed view of a specimen and an explanatory view showing a force device.

FIG. 10 is a graph of a hysteresis curve regarding shear force—horizontal displacement.

Explanation of symbols

1: Seismic isolation system, 2: Cylindrical rigid body, 21: Bottom, 22: Flange, 3: Layered elastic body, 31: First layer, 32: Second layer, 33: Third layer, 4: Snow 41: Damper part, 42: Cylindrical member, 43: Bolt, 44: Fitting, 45: Hozo pipe, 46: Drift pin, 47: Hole down hardware, 5: Slide frame, 6: Elastic sucker, 61: Suction cup, 62: Thick elastic plate, 63: Through hole, 7: Fixed frame, 8: Fixed plate,

T: Specimen, R: Load cell, O: Oil jack, A: Actuator, F: Base, P: Column, S: Concrete slab (foundation), M: Concave groove

Claims

The scope of the claims

[1] At least a layered elastic body consisting of a plurality of layers having different hardnesses is inserted into a cylindrical rigid body that opens upward, and a steel-based filament or a resin-based filament is inserted into the core of the layered elastic body. A spiral rod in which at least one kind of filament is formed in a spiral shape is vertically penetrated, one end of the spiral rod is connected to the bottom of the cylindrical rigid body, and the other end is the foundation or pillar or foundation of the building Alternatively, a seismic isolation / seismic device characterized in that a seismic isolation device connected to a fixture for fixing a column is used by fixing it between the foundation of the building and the base or column.

[2] A layered elastic body consisting of a plurality of layers having different hardnesses is inserted into at least the cylindrical rigid body that opens upward, and a steel-based filament or a resin-based filament is inserted into the core of the layered elastic body. A thick plate with a spiral rod with at least one type of filament formed in a spiral shape, a slide frame placed on the upper edge of the cylindrical rigid body, and a through hole in the center A suction cup elastic body having suction cup-like protrusions on at least one surface of the elastic body is narrowed between the slide frame and the fixed frame in a state where the upper end portion of the layered elastic body located in the inner layer is fitted in the through hole. The seismic isolation / seismic control device is characterized in that the fixed frame and the cylindrical rigid body bottom are connected by the spiral rod.

[3] The seismic isolation device according to claim 2 characterized by mounting or embedding the seismic control device on the foundation concrete, and fixing the base or column on the seismic isolation device with the fixing means. Seismic isolation system.

[4] At least a layered rigid body consisting of a plurality of layers having different hardnesses is inserted into a cylindrical rigid body that opens upward, and a steel-based filament or a resin-based filament is inserted into the core of the layered elastic body. A thick plate-like elastic body having a spiral rod formed by spirally forming at least one kind of filaments, a slide frame placed on the upper end edge of the cylindrical rigid body, and a through hole in the central portion. At least fit the upper end of the lamellar elastic body located in the inner layer into the through-hole, and fix the upper and lower ends of the spiral rod. A seismic isolation / seismic control device characterized in that it is connected to the bottom of the means and the cylindrical rigid body.

[5] The seismic isolation system according to claim 4, wherein the damping device is mounted or embedded in the foundation concrete, and the other end of the fixing means connected to the upper end of the spiral rod at one end is connected to the column or base. Seismic isolation / seismic device characterized in that a base or column is fixed on the seismic isolation / seismic device by connecting to the base.

[6] A layered rigid body composed of a plurality of layers having different hardnesses is inserted into at least the cylindrical rigid body that opens upward, and a steel-based filament or a resin-based filament is inserted into the core of the layered elastic body. A spiral rod in which at least one kind of filament is formed in a spiral shape is penetrated, a slide frame is placed on the upper edge of the cylindrical rigid body, and a fixed frame is placed on the slide frame. And a base part in contact with the lower end of the lamellar elastic body by the spiral rod so as to be slidable on the wall surface of the cylindrical rigid body and coupled to the fixed frame. .

[7] The seismic isolation system according to claim 6 characterized in that the seismic isolation system is mounted on or embedded in the foundation concrete, and the foundation or column is fixed on the seismic isolation system with the fixing means. Seismic isolation system.

[8] In the seismic isolation device according to claim 1, 2, 4, and 6, the layered elastic body has three layers of elastic material forces having different hardnesses, and the hardness of the elastic material of the inner layer close to the core portion The seismic isolation system is characterized in that the hardness of the elastic material in the middle layer is 90 degrees + 5 degrees, the hardness of the elastic material in the outer layer is 60 degrees + —5 degrees force.