JP4794204B2 - Seismic isolation device - Google Patents

Description

  The present invention relates to a seismic isolation device applied to the wall and floor of a building, and particularly in a low-rise building, a resilience against deformation caused by a sudden and intense vertical movement or roll that acts on the building at the time of the initial motion of an earthquake. It is related with the seismic isolation device which can raise.

Conventionally, for example, a frame pre-stressed by a tension spring is installed in a rectangular frame-shaped frame structure composed of two pillars, a horizontal member, and a base, and the building is built at the time of the initial earthquake occurrence. In general, seismic isolation devices are known which increase the deformation and restoration force of a building due to a sudden and intense vertical movement or roll that acts on the roof.
Catalog “i2s2 CORPORATE PROFILE” i2s2 Co., Ltd. Created in November 2003

  In the conventional seismic isolation device, the stress on the frame frame preloaded by the tension spring increases the deformation restoring force of the building against the sudden external force and prevents the building from collapsing. However, the structure is complicated and the number of parts is large, so the structure analysis is complicated, the weight increases and the cost is high. is there.

  The present invention has been made in view of the current situation, and provides a seismic isolation device which gives a tenacity and deformation restoring force to a building structure frame, and can obtain a large seismic isolation effect with a simple structure, particularly for a low-rise building. The purpose is to provide.

  Another object of the present invention is to provide a seismic isolation device that can cope with a building structure frame in which the interval between both vertical members is different with a device having a single shape and dimension.

  Another object of the present invention is to provide a seismic isolation device that can be applied to any location by simply changing the strength of the reinforcing plate even when the strength of the cane material is insufficient. is there.

  Another object of the present invention is to provide a seismic isolation device capable of obtaining a stable seismic isolation effect even when the stress on the building structure frame is large.

  Another object of the present invention is to provide a seismic isolation device in which a seismic isolation mechanism can be easily manufactured and a stable forcing force can be obtained.

  Another object of the present invention is to provide a seismic isolation device capable of easily obtaining a large amount of elastic deformation as a seismic isolation mechanism.

  Another object of the present invention is to provide a seismic isolation device capable of obtaining a stable deformation restoring force against an external force in a direction in which the seismic isolation mechanism is compressed.

  Another object of the present invention is to provide a seismic isolation device capable of obtaining substantially the same deformation restoring force with respect to an external force in a direction in which the seismic isolation mechanism is compressed and an external force in a direction in which the seismic isolation mechanism is pulled. To provide.

  Still another object of the present invention is to provide a seismic isolation device capable of obtaining a sufficient deformation restoring force against an external force applied in the width direction of a curved spring.

In order to achieve the above-mentioned object, the present invention is a method in which the first structural member, the second longitudinal member, the first transverse member and the second transverse member are assembled to the four corners of the building structure frame assembled. A cane-type seismic isolation device, in which two receiving brackets are attached to the first and second longitudinal members, respectively, and two receiving brackets are also attached to the first and second transverse members, respectively. It is attached via a seismic isolation mechanism having a deformation restoring force for both external forces of vertical movement, between the first cross member and the first and second vertical member brackets, and between the second cross member and the first and second side members. Both ends of the cane material are pivotally attached so as to connect between the vertical brackets.

  The present invention also attaches the seismic isolation mechanism to a substantially central portion in the longitudinal direction of the cross member, and attaches the two cane members to the seismic isolation mechanism so as to be swingable in both longitudinal member directions. The free end of the material is characterized by being attached to each longitudinal member.

  The present invention is also characterized in that a reinforcing plate having a substantially triangular shape is fixed between two cane members.

  The present invention also attaches the seismic isolation mechanism to the substantially central portion in the longitudinal direction of each cross member, and attaches two cane materials to each seismic isolation mechanism, and attaches the tip of each cane material, It is characterized in that each longitudinal member is attached to a substantially central portion in the longitudinal direction.

  The present invention is also characterized in that the seismic isolation mechanism is provided with a bending spring formed by bending an elastic strip.

  The present invention is also characterized in that a coil spring is provided in the seismic isolation mechanism.

  The present invention is also characterized in that the seismic isolation mechanism is provided with an elastic body made of synthetic resin or rubber, or a laminated elastic body in which this elastic body and a plate are alternately laminated.

  In the present invention, the curved spring is provided with two curved portions that are curved in an S-shape or an inverted S-shape at intervals in the longitudinal direction, so that the top portion has a substantially flat omega shape as a whole. It is characterized by that.

  The present invention is further characterized in that a continuous or discontinuous slit having a major axis in the longitudinal direction of the curved spring is provided in a region including the curved portion of the curved spring.

The present invention relates to a cane type seismic isolation device attached to four corners of a building structure frame assembled using a first longitudinal member, a second longitudinal member, a first transverse member and a second transverse member. The first and second vertical members are each attached with two metal fittings, and the first and second horizontal members are also provided with two metal fittings. The external force of both the earthquake roll and the vertical movement Of the first transverse member and the first and second longitudinal members and between the second transverse member and the first and second longitudinal members. so as to connect between, since the pivotally mounted at both ends of Hotsue material, a large seismic isolation effect can be obtained with a simple structure and can be applied to building block structural frame of varying sizes, facilities Engineering is easy Therefore, it can be easily applied to existing buildings.

  In the present invention, the seismic isolation mechanism can be attached to a substantially central portion in the longitudinal direction of the cross member, and two cane members are attached to the seismic isolation mechanism so as to be swingable in both longitudinal members. Since the free end of the cane is attached to each vertical member, it is possible to cope with building structure frames with different intervals between both vertical members with a single shape size device. As a result, the cost can be reduced.

  In the present invention, since a reinforcing plate body having a substantially triangular shape is fixed between the two cane members, the reinforcing plate body can be used even when the strength of the cane member is insufficient. It can be applied to any location simply by changing the strength of the brace, and there is no need to change the strength of the cane material according to the installation location.

  The present invention also attaches the seismic isolation mechanism to the substantially central portion in the longitudinal direction of each cross member, and attaches two cane materials to each seismic isolation mechanism, and attaches the tip of each cane material, Since each longitudinal member is attached to substantially the center in the longitudinal direction, a stable seismic isolation effect can be obtained even when the stress on the building structure frame is large.

  In the present invention, since the seismic isolation mechanism is provided with a curved spring formed by curving an elastic strip, the seismic isolation mechanism is easy to manufacture and a stable elastic force can be obtained. .

  In the present invention, since a coil spring is provided in the seismic isolation mechanism, a large amount of elastic deformation can be easily obtained.

  In the present invention, since the seismic isolation mechanism is provided with an elastic body made of synthetic resin or rubber, or a laminated elastic body in which the elastic body and the plate are alternately laminated, the seismic isolation mechanism is compressed. A stable deformation restoring force can be obtained with respect to the external force in the direction.

  In the present invention, the curved spring is provided with two curved portions that are curved in an S-shape or an inverted S-shape at intervals in the longitudinal direction so that the top portion has a generally omega shape with a flat top as a whole. Therefore, almost the same deformation restoring force can be obtained for the external force in the direction of compressing the seismic isolation mechanism and for the external force in the direction of pulling the seismic isolation mechanism. Nevertheless, a stable seismic isolation mechanism can be obtained.

  In the present invention, a continuous or discontinuous slit whose major axis is the longitudinal direction of the curved spring is provided in a region including the curved portion of the curved spring, so that an external force applied in the width direction of the curved spring can be reduced. In contrast, a sufficient deformation restoring force can be obtained.

The present invention will be described below with reference to the drawings.
FIG. 1 shows a seismic isolation device according to a first embodiment of the present invention. This seismic isolation device 1 includes a horizontal column 4 such as a through column 2, a tube column 3, a beam or a trunk, and a base. With respect to the building structure frame 6 assembled using 5, the four corners are respectively attached.

  That is, as shown in FIG. 1, the seismic isolation device 1 includes a receiving bracket 8 attached to a through column 2 or a tube column 3 via wood screws, bolts / nuts, nails and other stoppers 7, and a horizontal member 4. Alternatively, it is composed of a base isolation mechanism 9 attached to the base 5 via a stopper 7, and a brace material 10 that connects between the receiving bracket 8 and the base isolation mechanism 9. Resilience against deformation of the building due to external forces such as earthquakes can be obtained.

  As shown in FIGS. 1 and 2, the seismic isolation mechanism 9 includes a mounting bracket 11 attached to the horizontal member 4 or the base 5, a receiving bracket 12 to which one end of the cane member 10 is coupled, and both the brackets. The curved spring 13 is interposed between 11 and 12, and the curved spring 13 provides a restoring force against the deformation of the building due to an external force.

  As shown in FIGS. 2 to 4, the bending spring 13 is made of an elastic strip having a predetermined length and a predetermined width, and is bent in an S shape or an inverted S shape with an interval in the longitudinal direction. The two curved portions 13 are provided, and the top portion has a generally omega shape with a flat top as a whole.

  As shown in FIGS. 3 and 4, the bending spring 13 has an arbitrary number (in FIGS. 3 and 4, the longitudinal direction of the bending spring 13 is the long axis in the region where the bending portions 13a are provided. Two slits 14 are provided, and these slits 14 can obtain a sufficient deformation restoring force against an external force applied in the width direction of the bending spring 13.

  The characteristics of the curved spring 13 having the slits 14 are described in detail in the invention previously proposed by the present inventor (see Japanese Patent Application No. 2004-274177), and therefore the details are omitted to avoid duplication. To do.

  As shown in FIG. 2, the bending spring 13 is fixed at its center in the longitudinal direction to the receiving metal 12 via a fixing screw 15, and at both ends in the longitudinal direction via a fixing screw 16. 11, the seismic isolation mechanism 9 is made into an integrated product.

Next, the operation of the present embodiment will be described. As shown in FIG. 5, the axial force N generated by the seismic horizontal force C as the layer shear force due to the seismic roll is divided into two nodes of the through column 2, The vertical component force V and the horizontal component force H are each transmitted to the seismic isolation mechanism 9 through the cane member 10.

  When these component forces V and H are transmitted to the seismic isolation mechanism 9, the roll of the building structure frame 6 is absorbed by the elastic deformation of the bending spring 13 incorporated in the seismic isolation mechanism 9, and the reaction force Thus, the deformation of the building structure frame 6 can be restored.

  Even when an axial force N is generated in the through-column 2 by the vertical force Z caused by the vertical motion of the earthquake, each seismic isolation mechanism is the same as when the horizontal force C is applied by the horizontal force caused by the overturning moment. 9 functions, and the deformation restoring force similar to the above is obtained in the building structure frame 6.

  Even if the building structure frame is loosened due to the momentary sudden rolls that act on the building at the time of the initial earthquake, or the vertical movement causes the building to loosen, the seismic isolation device 1 causes the building. It is possible to increase the deformation restoring force of the building, thereby preventing the collapse of the building.

In addition, in the said 1st Embodiment, although the case where all the seismic isolation apparatuses 1 were attached to each corner part of the building structure frame 6 was demonstrated, at least 1 seismic isolation apparatus 1 of the building structure frame 6 was demonstrated. If it is attached to any corner, the desired effect can be obtained.
In the first embodiment, the case where one bending spring 13 is used has been described. However, for example, two bending springs 13 may be used with their tops stacked back to back. As a result, an even greater deformation restoring force can be obtained.

  FIG. 6 shows a second embodiment of the present invention. Instead of the seismic isolation device 1 in the first embodiment, two seismic isolation devices 21 mounted in the building structure frame 6 are used. It is what I did.

  That is, as shown in FIG. 6, the seismic isolation device 21 includes a seismic isolation mechanism 29 that is attached to the horizontal member 4 or the base 5 in the center in the longitudinal direction via the stopper 7. Two brace members 30 </ b> A and 30 </ b> B are pivotally attached to the seismic mechanism 29 via a pivot pin 31. And each of these wand members 30A and 30B has a structure that can swing in both pillars 2 and 3 directions.

  As shown in FIG. 6, receiving brackets 28A and 28B are pivotally attached to the free ends of the respective cane members 30A and 30B via pivoting pins 32A and 32B. , And can be attached to the pillars 2 and 3 via the stoppers 7.

As shown in FIG. 6, the seismic isolation mechanism 29 has the same configuration as the seismic isolation mechanism 9 (see FIG. 2) in the first embodiment. Deformation restoring force for can be obtained.
Other points are the same as those in the first embodiment, and the operation is also the same.

  Thus, each cane member 30A, 30B can swing in the direction of both pillars 2 and 3, so even if the distance between the pillars 2 and 3 is changed, All of the seismic isolation devices 21 having the shape and dimensions can be used, and a significant cost reduction can be achieved as compared with a case where a plurality of types of seismic isolation devices 21 are prepared in advance.

FIG. 7 shows a third embodiment of the present invention. In addition to the configuration of the second embodiment, a reinforcing plate 40 is attached between two cane members 30A and 30B. It is a thing.
Other points are the same as those of the second embodiment, and the operation is the same.

  Since the reinforcing plate 40 is fixed between the two cane members 30A and 30B, even if the strength of the cane members 30A and 30B is insufficient, It can be applied to any location simply by changing the strength, and there is no need to change the strength of the cane members 30A and 30B depending on the location of installation.

  FIG. 8 shows a fourth embodiment of the present invention. Instead of the seismic isolation device 21 in the second embodiment, a seismic isolation device 41 attached to one in the building structure frame 6 is used. It is what I did.

That is, as shown in FIG. 8, the seismic isolation device 41 includes a single bracket 48A, in which the brackets 28A and 28B of the upper and lower two seismic isolation devices 21 in the second embodiment are shared. 48B is used so as to have a generally rhombus shape as a whole, and a horizontal connecting member 50 is interposed between the metal fittings 48A and 48B on both sides.
Other points are the same as those of the second embodiment, and the operation is the same.

  Thus, the seismic isolation device 41 according to the present embodiment can obtain a great seismic isolation effect, although the structure is somewhat complicated. In addition, by using the horizontal connecting member 50, it is possible to obtain a large proof strength against an external force. In addition, you may make it abbreviate | omit this horizontal joint material 50 as needed.

  FIG. 9 shows a fifth embodiment of the present invention, in which a seismic isolation device 51 is used in place of the seismic isolation device 41 in the fourth embodiment.

That is, as shown in FIG. 9, the seismic isolation device 51 uses column seismic isolation mechanisms 59A and 59B having the same configuration as the seismic isolation mechanism 29 in place of the metal fittings 48A and 48B in the fourth embodiment. As a whole, four seismic isolation mechanisms 29, 59A, 59B are incorporated.
In addition, about another point, it has the same structure as the said 4th Embodiment, and an effect | action is also the same.

  Thus, since the seismic isolation device 51 according to the present embodiment includes four seismic isolation mechanisms 29, 59A, and 59B in the device, the seismic isolation devices 29, 59A, and 59B are incorporated in the seismic isolation mechanisms 29, 59A, and 59B. As the curved spring 13 (see FIG. 2), a highly flexible spring can be used, and thereby the seismic isolation range can be expanded from a small external force to a large external force.

  The column seismic isolation mechanisms 59A and 59B used in the present embodiment are not only used in the present embodiment, but also in the first to fourth embodiments. Needless to say, it can also be used.

  FIG. 10 shows a sixth embodiment of the present invention. Instead of the seismic isolation device 21 in the second embodiment, a seismic isolation device 61 that is mounted in the building structure frame 6 is used. It is what I did.

That is, as shown in FIG. 10, the seismic isolation device 61 increases the length of each of the cane members 30A and 30B in the second embodiment, and the receiving brackets 28A and 28B are connected to the columns 2 and 3 respectively. It is made to attach to the position near the lower end of the.
Other points are the same as those of the second embodiment, and the operation is the same.

  Thus, even if the seismic isolation device 61 according to the present embodiment is used, the same effects as those of the seismic isolation devices 1, 21, 41, 51 according to the respective embodiments can be obtained.

  In the sixth embodiment, the case where the seismic isolation mechanism 29 is attached to the horizontal member 4 and the seismic isolation device 61 is used in a state where the whole is mountain-shaped has been described. A similar effect can be obtained even if the seismic isolation device 61 is used in a state where the base is attached to the base 5 and the whole is in a V shape.

  FIG. 11 shows a seventh embodiment of the present invention in which a seismic isolation mechanism 79 is used in place of the seismic isolation mechanism 9 in the first embodiment.

That is, as shown in FIG. 11, the seismic isolation mechanism 79 has a structure in which an arbitrary number of coil springs 73 are disposed between the mounting bracket 11 and the receiving bracket 12. The deformation restoring force with respect to the external force can be obtained.
Other points are the same as those in the first embodiment, and the operation is also the same.

  Since the seismic isolation mechanism 79 in which the coil spring 73 is incorporated is used, a large amount of elastic deformation can be easily obtained.

  FIG. 12 shows an eighth embodiment of the present invention, which uses a seismic isolation mechanism 89 in place of the seismic isolation mechanism 9 in the first embodiment.

That is, as shown in FIG. 12, the seismic isolation mechanism 89 has a structure in which an elastic body 83 of a predetermined thickness made of synthetic resin or rubber is disposed between the mounting bracket 11 and the receiving bracket 12. The elasticity of the elastic body 83 provides a deformation restoring force with respect to an external force.
Other points are the same as those in the first embodiment, and the operation is also the same.

  Therefore, since the seismic isolation mechanism 89 in which the elastic body 83 is incorporated is used, a stable deformation restoring force can be obtained with respect to the external force in the direction in which the seismic isolation mechanism 89 is compressed.

  FIG. 13 shows a ninth embodiment of the present invention in which a seismic isolation mechanism 99 is used in place of the seismic isolation mechanism 9 in the first embodiment.

That is, as shown in FIG. 13, the seismic isolation mechanism 99 is formed by alternately laminating an elastic body 93a and a plate body 93b having a predetermined thickness made of synthetic resin or rubber between the mounting bracket 11 and the receiving bracket 12. The laminated elastic body 93 is provided, and the laminated elastic body 93 can obtain a deformation restoring force with respect to an external force.
Other points are the same as those in the first embodiment, and the operation is also the same.

  Therefore, since the seismic isolation mechanism 99 in which the laminated elastic body 93 is incorporated is used, the seismic isolation mechanism 89 in the eighth embodiment is sufficient even for a larger external force. Deformation restoring force can be obtained.

  14 and 15 show a tenth embodiment of the present invention, in which a seismic isolation device 101 is used in place of the seismic isolation device 1 in the first embodiment.

  That is, as shown in FIG. 14 and FIG. 15, the seismic isolation device 101 includes a plate-shaped receiving bracket 108 attached to the through pillar 2 via the stopper 7, and a seismic isolation mechanism 109 attached to the horizontal member 4. The both ends are composed of a brace member 110 and a pipe-shaped brace material 110 welded to the seismic isolation mechanism 109, and between the brace member 110 and the brace member 108 and between the brace member 110 and the seismic isolation mechanism. 109 is reinforced by reinforcing ribs 111.

  As shown in FIGS. 14 and 15, the seismic isolation mechanism 109 includes a plate-shaped receiving metal fitting 112 to which a brace material 110 is welded to the lower surface, and a curved spring 13 fixed to the upper surface of the receiving metal fitting 112. The curved spring 13 is composed of a pair of mounting brackets 113A and 113B for mounting the curved spring 13 on the lower surface of the horizontal member 4. The mounting brackets 113A and 113B and the curved spring 13 move the horizontal member 4 up and down. The through-fitting bolt 114 and a nut 116 attached to the through-bolt 114 via a large washer 115 are fixed to the lower surface of the horizontal member 4, and the mounting brackets 113A and 113B are It is fixed to the side surface of the horizontal member 4 via a stopper 117.

That is, each of the mounting brackets 113A and 113B has an L shape as shown in FIGS. 14 and 15, and is arranged in such a manner that the top of the bending spring 13 is held from both lower surfaces. As shown in FIG. 15, long holes 118 are provided on the lower sides of the mounting brackets 113A and 113B so as to be able to cope with the change in dimensions of the horizontal member 4, and the through bolts 114 are connected to both the long holes. 118 is arranged to pass through.
Other points are the same as those in the first embodiment, and the operation is also the same.

  Since the bending spring 13 and the pair of mounting brackets 113A and 113B have a separate structure, the bending spring 13 can be constructed in accordance with the situation at the site and the bending spring 13 is paired with the pair of mounting brackets 113A and 113B. Therefore, even when a rotational moment around the through bolt 114 is applied to the bending spring 13, the rotation of the bending spring 13 can be suppressed by the mounting brackets 113A and 113B.

  In the above embodiment, the case where the seismic isolation mechanism 109 is attached to the horizontal member 4 has been described, but conversely, the seismic isolation mechanism 109 may be attached to the through column 2. Further, the seismic isolation device 101 may be attached to a corner portion other than the corner portion between the through column 2 and the horizontal member 4.

  Further, in each of the above embodiments, the case where it is applied to the wall surface of the wooden shaft construction method has been described as an example. However, the present invention can be similarly applied to the floor surface of the wooden shaft construction method, and the frame wall It can be applied to the construction method (2x4, 2x6), steel 2x4 construction method, or steel structure building as well, and even if applied to the structural frame of an existing building from the outside wall The effect of can be obtained.

  As described above, the seismic isolation device according to the present invention is useful as a seismic isolation device applied to the wall surface and floor surface of a building, and particularly as a seismic isolation device capable of increasing the deformation restoring force of a low-rise building. Is suitable.

It is a whole lineblock diagram showing the seismic isolation device concerning a 1st embodiment of the present invention. It is detail drawing of the seismic isolation mechanism of FIG. It is the block diagram seen from the receiving metal fitting of the curved spring of FIG. It is the IV-IV sectional view taken on the line of FIG. It is explanatory drawing which shows the effect | action of the seismic isolation apparatus of FIG. FIG. 3 is a view corresponding to FIG. 1 showing a second embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 1 showing a third embodiment of the present invention. 4 shows a fourth embodiment of the present invention and is equivalent to FIG. FIG. 10 is a view corresponding to FIG. 1 showing a fifth embodiment of the present invention. It is FIG. 1 equivalent view which shows the 6th Embodiment of this invention. It is FIG. 2 equivalent view which shows the 7th Embodiment of this invention. It is FIG. 2 equivalent view which shows the 8th Embodiment of this invention. It is FIG. 2 equivalent view which shows the 9th Embodiment of this invention. It is explanatory drawing which shows the 10th Embodiment of this invention. It is the XV-XV line expanded sectional view of FIG.

Explanation of symbols

1, 21, 41, 51, 61, 101 Seismic isolation device 2 Through column 3 Pipe column 4 Horizontal member 5 Base 6 Building structure frame 7,117 Stopper 8, 12, 28A, 28B, 48A, 48B, 108, 112 Bracket 9, 29, 79, 89, 99, 109 Seismic isolation mechanism 10, 30A, 30B, 110 Cane material 11, 113A, 113B Mounting bracket 13 Bending spring 13a Bending portion 14 Slit 15, 16 Fixing screw 40 Reinforcing plate body 50 Horizontal connecting member 59A, 59B Seismic isolation mechanism for column 73 Coil spring 83, 93a Elastic body 93 Laminated elastic body 93b Plate body 114 Through bolt 116 Nut

Claims (9)

A cane type seismic isolation device attached to the four corners of a building structure frame assembled using the first longitudinal member, the second longitudinal member, the first transverse member and the second transverse member,
Attach two brackets to the first and second longitudinal members,
Two receiving brackets are attached to the first and second cross members, respectively, via mounting brackets and seismic isolation mechanisms having deformation restoring force against external forces of both earthquake roll and vertical movement,
Both ends of the cane member are pivotally attached so as to connect between the first crosspiece and the first and second vertical bars and between the second crosspiece and the first and second vertical bars. Seismic isolation device characterized by that. A cane type seismic isolation device attached to the four corners of a building structure frame assembled using the first longitudinal member, the second longitudinal member, the first transverse member and the second transverse member,
Attach one receiving bracket to the center of each of the first and second longitudinal members,
Two receiving brackets are attached to the first and second cross members, respectively, via mounting brackets and seismic isolation mechanisms having deformation restoring force against external forces of both earthquake roll and vertical movement,
Rhombus shape as a whole so as to connect between the first cross member and the first and second vertical member brackets and between the second cross member and the first and second vertical member brackets A seismic isolation device characterized in that both ends of the cane are pivotally attached. The said seismic isolation mechanism is comprised from the curved spring formed by curving the elastic strip | belt board material, and this curved spring is formed in the omega shape of the flat shape at the top part. The seismic isolation device described. The seismic isolation device according to claim 3 , wherein the curved spring has a continuous or discontinuous slit having a major axis in the longitudinal direction of the curved spring in a region including the curved portion. The seismic isolation device according to claim 1 or 2, wherein the seismic isolation mechanism comprises a coil spring. Seismic isolation device according to claim 1 or 2, characterized in that constructed from the steel base isolation mechanism synthetic resin or rubber elastic body, or layered elastic body obtained by laminating the elastic body and the plate member are alternately . The seismic isolation device according to any one of claims 1 to 6, wherein a reinforcing plate having a triangular shape is fixed between the pair of left and right cane members. The receiving metal fittings attached to the first and second vertical members according to claim 2 are attached via a seismic isolation mechanism having a deformation restoring force against external force of both the mounting metal fitting and the earthquake roll and vertical movement. A seismic isolation device. The seismic isolation device according to claim 2 or 8, wherein a horizontal connecting member is provided between the metal fittings attached to the first and second vertical members.

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