JP2014196815A - Base isolation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base isolation device a connection member of which is easy to convey, and construction of which on a job site is also easy.SOLUTION: A connection member 21 is manufactured by combining member pieces 17 and member pieces 19 in which three pieces of L-shaped plates are stacked vertically, in a lattice shape, in such a manner that a planar position corresponding to laminated rubbers 31 on an upper stage and a lower stage becomes hollow. At this time, corner parts of the four member pieces 19 are butted and combined in a cross shape, and four member pieces 17 are combined with the four member pieces 19 respectively so as to form a two-by-two lattice shape being combined with the cross shape. At a combined portion of the member pieces 19, a fitting plate 13 is arranged on an upper surface 45 and a lower surface 47 so as to bridge over each member piece 19, and the fitting plate 13 and each member piece 19 are connected by a connecting jig 39. A combination portion of the member piece 17 and the member piece 19 is connected vertically by using the connecting jig 39 in a state where a protrusion 25 of the member piece 17 is inserted in a recess 29 of the member piece 19.

Description

  The present invention relates to a seismic isolation device in which seismic isolation members are arranged in multiple stages.

2. Description of the Related Art Conventionally, as a seismic isolation device in a heavy structure such as a nuclear facility, a multistage laminated rubber in which a plurality of laminated rubbers arranged at each stage are connected up and down by a connecting member and stacked in multiple stages is often used.
As the connecting member, a single steel plate is often used (see Patent Documents 1 and 2). Patent Document 1 describes that a rib or unevenness is provided on a steel plate in order to improve bending rigidity.

  In general, the laminated rubber and the connecting member include the upper flange of the lower laminated rubber, a connecting member, a method of fixing the lower flange of the upper laminated rubber with a bolt, or the upper flange side and the upper laminated rubber of the lower laminated rubber. The bolts are respectively inserted from the lower flange side and connected to the connecting member.

JP 62-41874 A JP 2011-122602 A

  The thickness of the connecting member is set so as to satisfy the condition that the maximum moment of the connecting member does not exceed the total plastic moment even if the laminated rubber is subjected to a large horizontal deformation. In a single steel plate that has been used in the past, it is necessary to satisfy the above moment conditions while securing an area for placing the laminated rubber. There is a problem that is difficult.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a seismic isolation device in which a connecting member is easily transported and construction on site is easy.

  The present invention for achieving the above-described object is a seismic isolation device in which a seismic isolation member is connected up and down by a connecting member, and the connecting member is a member piece configured by stacking a plurality of plate pieces up and down. A seismic isolation device characterized in that a plurality of combinations are formed so as to have a hollow portion on a plane.

  As described above, in the present invention, a plurality of member pieces configured by overlapping plate pieces are combined so as to have a portion that becomes a cavity on a plane, and a connecting member is manufactured. For this reason, when transporting the connecting member to the site, it can be transported in a state of being divided into small and light individual plate pieces. Furthermore, since the connecting member has a hollow portion, the amount of the plate piece is also reduced. Accordingly, the connecting member can be easily transported, and the connecting pieces can be easily manufactured by assembling the plate pieces on site, and the construction of the seismic isolation device is also easy. Furthermore, since the connecting member has a hollow portion, the performance generated by the heat generation of the seismic isolation member is reduced by releasing the heat generated by the operation of the seismic isolation member to the hollow portion of the connecting member above or below it. There is also an advantage that can be prevented.

At least one of the combination parts of the member pieces is arranged such that at least one of the plate pieces constituting one member piece to be combined and at least one of the plate pieces constituting the other member piece are overlapped, and connected. It is desirable to connect up and down using a tool.
In this way, the plate piece of one member piece and the plate piece of the other member piece are arranged in an overlapping manner, and by connecting them up and down, the unity at the combination part of the member pieces is improved and sufficient rigidity is obtained. Can be provided to the connecting member. Moreover, work such as welding is not required at the time of connection, and the manufacture of the connection member is easy.

In addition, at least one portion of the combination parts of the member pieces is provided with restraining members on the upper surface and the lower surface so as to straddle the respective member pieces to be combined, and the restraining members on the upper surface and the lower surface are connected to the member pieces. It is desirable to connect up and down using a tool.
In this way, while suppressing each member piece to be combined from above and below using a suppressing member, connecting the suppressing member and each member piece using a connecting jig also improves the integrity at the combined portion, and is sufficient Rigidity can be imparted to the connecting member. Moreover, work such as welding is not required at the time of connection, and the manufacture of the connection member is easy.

  ADVANTAGE OF THE INVENTION According to this invention, the seismic isolation apparatus which is easy to carry a connection member and is easy to construct on-site can be provided.

Elevated view of seismic isolation device 1 The figure which shows the structural member of the connection member 21 The figure which shows the connection member 21 Elevated view of seismic isolation device 10 The figure which shows the structural member of the connection member 93 The figure which shows the connection member 93

  Hereinafter, embodiments of the seismic isolation device of the present invention will be described in detail with reference to the drawings. The seismic isolation device of the present invention is installed in a lower part of a heavy structure such as a nuclear facility and used for seismic isolation, but can also be used for other structures.

[First Embodiment]
First, the seismic isolation device according to the first embodiment of the present invention will be described.

FIG. 1 is an elevation view of the seismic isolation device 1 of the first embodiment.
As shown in FIG. 1, the seismic isolation device 1 according to the first embodiment includes laminated rubbers 31a and 31b (seismic isolation members), connecting members 21 and the like, and a plurality of laminated rubbers 31a and 31b arranged on the same plane. Are connected up and down using a connecting member 21 and stacked in multiple stages.

  The laminated rubber 31a is arranged at the upper stage, and the laminated rubber 31b is arranged at the lower stage. In the seismic isolation device 1, the upper laminated rubber 31 a and the lower laminated rubber 31 b are arranged in 2 × 2 rows, and the planar positions thereof correspond. As the laminated rubbers 31a and 31b, conventional rubber having a seismic isolation function can be used as appropriate.

As shown in FIG. 1, the laminated rubbers 31 a and 31 b have lower flanges 35 a and 35 b at the lower end of the main body 33, and upper flanges 37 a and 37 b at the upper end, respectively. These flanges are formed of, for example, a steel plate.
Further, a bolt hole (not shown) is provided at a predetermined position on the lower flange 35a of the upper laminated rubber 31a. Bolt holes (not shown) are also provided in the upper flange 37b of the lower laminated rubber 31b at a planar position corresponding to the bolt holes. These bolt holes are used when the laminated rubbers 31 a and 31 b and the connecting member 21 are connected.

  The connecting member 21 is disposed between the upper laminated rubber 31a and the lower laminated rubber 31b. Next, the connecting member 21 will be described with reference to FIGS. 2 and 3.

  FIG. 2 is a diagram illustrating constituent members of the connecting member 21. 2A is a plan view of the L-shaped plate 2, FIG. 2B is a plan view of the L-shaped plate 7, FIG. 2C is a plan view of the holding plate 13, and FIG. 2D is a member piece 17. FIG. 6 is a perspective view of a member piece 19.

  The connecting member 21 is manufactured using the L-shaped plates 2 and 7 and the holding plate 13 shown in FIGS. These plates are formed of steel plates with appropriate strength.

  As shown in FIGS. 2A and 2B, the L-shaped plates 2 and 7 are L-shaped plate pieces.

  The L-shaped plate 2 shown in FIG. 2A has holes 3a and 3b for connecting to other plates. The hole 3 a is provided near the end of the side portion 4 of the L-shaped plate 2, and the hole 3 b is provided in the corner portion 6 of the L-shaped plate 2. The L-shaped plate 2 further has a hole 5 for connecting to the flanges of the laminated rubbers 31a and 31b. Two holes 5 are provided in the vicinity of the central portion of the side portion 4.

  The L-shaped plate 7 shown in FIG. 2B has a hole 9 for connecting to another plate. The hole 9 is provided in the corner portion 16 of the L-shaped plate 7. The L-shaped plate 7 further has a hole 11 for connecting to the flanges of the laminated rubbers 31a and 31b. Two holes 11 are provided near the center of the side 8.

  The L-shaped plate 7 has the same thickness as the L-shaped plate 2. Further, the width 8 a of the side portion 8 of the L-shaped plate 7 is the same as the width 4 a of the side portion 4 of the L-shaped plate 2, and the length 8 b of the side portion 8 of the L-shaped plate 7 is the same as that of the L-shaped plate 2. The width 4a is subtracted from the length 4b of the side 4.

  As shown in FIG. 2C, the holding plate 13 is a plate having a square plane. The holding plate 13 has a hole 15 for connecting to another plate. One hole 15 is provided at each of the four corners of the holding plate 13.

  As shown in FIG. 2D, in the present embodiment, the member pieces 17 and 19 are formed by stacking three L-shaped plates in a layered manner in the vertical direction.

The member piece 17 is configured such that the L-shaped plate 2 is sandwiched between two L-shaped plates 7 and the corner portions of these plates are aligned and vertically stacked. At this time, the hole 9 of the L-shaped plate 7 on the upper surface and the lower surface and the hole 3b of the L-shaped plate 2 communicate with each other vertically to form a plate coupling hole 12a. Further, the hole 11 of the L-shaped plate 7 on the upper surface and the lower surface and the hole 5 of the L-shaped plate 2 communicate with each other vertically to form a flange mounting hole 14a.
Further, the member piece 17 has a convex portion 25 at an end portion 23 which is a combination portion with the member piece 19. This convex part 25 is because the side part 4 of the L-shaped plate 2 is longer than the side part 8 of the L-shaped plate 7 by the width 4a, and the end part of the side part 4 protrudes accordingly. It is. As described above, the hole 3a is disposed at this end.

The member piece 19 is obtained by vertically stacking the corners of these plates so that the L-shaped plate 7 is sandwiched between the two L-shaped plates 2. At this time, the hole 3b of the L-shaped plate 2 on the upper surface and the lower surface and the hole 9 of the L-shaped plate 7 are vertically communicated to form a plate coupling hole 12b. Further, the hole 5 of the L-shaped plate 2 on the upper surface and the lower surface and the hole 11 of the L-shaped plate 7 communicate with each other vertically to form a flange mounting hole 14b.
Further, the member piece 19 has a concave portion 29 at an end portion 27 which becomes a combination portion with the member piece 17. The recess 29 is due to the side 8 of the L-shaped plate 7 being shorter than the side 4 of the L-shaped plate 2 by the width 4a, which is a depression. At this time, the end portion of the side portion 4 of the L-shaped plate 2 forms a side wall of the recess 29. As described above, the hole 3a is disposed at this end.

  3A and 3B are views showing the connecting member 21. FIG. 3A is a plan view and FIG. 3B is a perspective view. FIG. 3A shows a state before the restraining plate 13 is arranged. In FIG. 3A, the arrangement of the laminated rubber 31a is indicated by a dotted line.

  As shown in FIG. 3 (a), in the connecting member 21, the four member pieces 19 are combined into a cross by abutting the corners of the L shape, and the remaining four member pieces 17 are combined with the cross to form a rice character. Are arranged on the outer peripheral portion so as to form a lattice, and are combined with the four member pieces 19.

  In the combination portion of the member piece 17 and the member piece 19 on the outer peripheral portion of the connecting member 21, the convex portion 25 (see FIG. 2D) of the member piece 17 is the concave portion 29 of the member piece 19 (see FIG. 2D). ) From the side. At this time, the end portion of the side portion 4 of the L-shaped plate 2 on the upper surface and the lower surface of the member piece 19 and the end portion of the side portion 4 of the L-shaped plate 2 of the member piece 17 are arranged to overlap each other. The hole 3a of the character plate 2 communicates with the top and bottom to form a plate connection hole 12c.

  As shown in FIG. 3B, at the abutting portion of the corners of the four member pieces 19 combined in a cross, the restraining plate 13 is held on the upper surface 45 and the lower surface 47 so as to straddle the corners of the four member pieces 19. Is placed. At this time, each of the four holes 15 of the restraining plate 13 on the upper surface 45 and the lower surface 47 communicates with the plate connecting holes 12b (see FIG. 2D) of the four member pieces 19 in the vertical direction.

As shown in FIG. 3B, the plates of the connecting member 21 combined are integrated using a connecting jig 39 (see FIG. 1). The connecting jig 39 is composed of bolts and nuts. The plate connecting holes 12a and 12c shown in FIG. 3 (b), and the hole where the plate connecting hole 12b and the hole 15 of the holding plate 13 communicate with each other, are bolted from the upper surface side. , And the nuts are tightened from the lower surface side to connect the plates. In addition, as the connection jig 39, a shear pin may be used instead of a bolt or a nut.
In this way, the connecting members 21 are manufactured by combining the member pieces 17 and 19 in a plane. The connecting member 21 is formed in a lattice shape so that the planar position corresponding to the upper and lower laminated rubbers 31a and 31b is a hollow portion.

  In the seismic isolation device 1 shown in FIG. 1, the upper laminated rubber 31 a and the lower laminated rubber 31 b are arranged so as to correspond to the positions of the cavities of the connecting member 21. At this time, the upper laminated rubber 31 a described above is used. The bolt holes of the lower flange 35a and the bolt holes of the upper flange 37b of the lower laminated rubber 31b communicate with the flange mounting holes 14a and 14b of the member pieces 17 and 19 of the connecting member 21 shown in FIG. To do.

The upper laminated rubber 31 a, the connecting member 21, and the lower laminated rubber 31 b constituting the seismic isolation device 1 are connected using a connecting jig 41.
The connecting jig 41 is composed of bolts and nuts, and passes the bolts from the lower flange 35a side of the upper laminated rubber 31a through holes formed so as to communicate as described above, and the upper flange of the lower laminated rubber 31b. Each member is connected by tightening a nut from the 37b side. Alternatively, instead of using a through bolt in this way, a bolt is screwed into the connecting member 21 from each of the lower flange 35a side and the upper flange 37b side to connect the upper laminated rubber 31a and the lower laminated rubber 31b, respectively. You may connect with the member 21. FIG.
In this way, the seismic isolation device 1 shown in FIG. 1 is manufactured.

As described above, in the first embodiment, the member pieces 17 and 19 in which a plurality of plates are vertically stacked are combined so that the planar positions corresponding to the upper and lower laminated rubbers 31a and 31b are hollow portions. By connecting and integrating, the connecting member 21 is manufactured. The L-shaped plates 2 and 7 constituting the member pieces 17 and 19 can have a thickness of about one-third compared with a single steel plate conventionally used as a connecting member, and the size is also small. Reduces weight. Further, the connecting member 21 is hollow at the position corresponding to the laminated rubbers 31a and 31b, and the amount of the plate used can be reduced. Therefore, the connecting member 21 can be easily transported to the site in such a state that it is divided into small and light individual plates, and the connecting member 21 can be easily manufactured by assembling these plates at the site. Construction of the seismic isolation device 1 is also facilitated. Further, since the connecting member 21 has a hollow portion, the heat generated by the operation of the laminated rubber 31a, 31b is released to the hollow portion of the connecting member 21 above or below the laminated rubber 31a, 31b. There is also an advantage that it is possible to prevent performance degradation due to heat generation.
Moreover, since the connection member 21 is formed using a plate having a simple shape suitable for mass production, there is an advantage that the manufacturing cost is low. Furthermore, each plate can be easily connected using bolts, nuts, shear pins, etc., and welding work is unnecessary.

Further, in the connecting member 21, in the combination part of the four member pieces 19, the restraining plate 13 is disposed on the upper surface 45 and the lower surface 47 so as to straddle the corners of the four member pieces 19. Then, while holding the member piece 19 from above and below with the holding plate 13, the holding plate 39 is used to connect the upper and lower holding plates 13 to each of the four member pieces 19.
Furthermore, in the combination part of the member piece 17 and the member piece 19 of the outer peripheral part of the connection member 21, the edge part of the L-shaped plate 2 of the upper surface and lower surface of the member piece 19, and the edge part of the L-shaped plate 2 of the member piece 17 Are connected up and down by using the connecting jig 39 in a state where the two are arranged in an overlapping manner.
By performing the connection as described above, the integrity of the combination part of the member pieces is increased, and the connection member 21 can be given sufficient rigidity.

  The connecting member 21 is not limited to the above. For example, the combination part of the member piece 17 and the member piece 19 corresponds to the plate connection hole 12c so as to straddle two adjacent member pieces 19 in the same manner as the combination part of the four member pieces 19 described above. The holding plates provided with holes in two places may be arranged on the upper surface 45 and the lower surface 47, and the holding plate 39 may be used to connect the holding plate and the respective member pieces 19 vertically. Thereby, the integrity of the combination part of the member piece 17 and the member piece 19 can be improved more.

Moreover, each member piece 17 and 19 is not restricted to what comprises three L-shaped plates, and may comprise, for example, five L-shaped plates. In this case, two convex portions 25 are provided on the end portion 23 of the member piece 17, and two concave portions 29 are provided on the end portion 27 of the member piece 19. It is also possible to combine the member pieces 17 and 19 by connecting them up and down using the connecting jig 39 in a state in which 25 is inserted in each recess 29.
Alternatively, each of the member pieces 17 and 19 may be configured by stacking two L-shaped plates. For example, in this case, in the combination part of the member pieces 17 and 19, one piece of one member piece 17 is provided. The end of the L-shaped plate and the end of one L-shaped plate of the other member piece 19 can be connected up and down using the connecting jig 39.

  Thus, the connecting member is not limited to that shown in the first embodiment. Hereinafter, the seismic isolation device of 2nd Embodiment from which the structure of a connection member differs is demonstrated. In the second embodiment, differences from the first embodiment will be mainly described, and descriptions of the same points as the first embodiment will be omitted.

[Second Embodiment]
FIG. 4 is an elevation view of the seismic isolation device 10 of the second embodiment. As in the first embodiment, the seismic isolation device 10 according to the second embodiment is formed by connecting the upper and lower laminated rubbers 31a and 31b up and down using connecting members. The connecting member 93 of the seismic isolation device 10 is different from the connecting member 21 of the seismic isolation device 1 of the first embodiment in its configuration. Hereinafter, the connecting member 93 will be described with reference to FIGS.

  FIG. 5 is a diagram illustrating constituent members of the connecting member 93. 5A is a plan view of the L-shaped plate 51, FIG. 5B is a plan view of the L-shaped plate 59, FIG. 5C is a plan view of the chevron plate 65, and FIG. FIG. 5E is a plan view of the holding plate 77, and FIG. 5F is a perspective view of the member piece 81 and the member piece 83.

  The connecting member 93 is manufactured using the L-shaped plates 51 and 59, the chevron plates 65 and 71, and the restraining plate 77 shown in FIGS. These plates are formed of steel plates with appropriate strength.

  As shown in FIGS. 5A and 5B, the L-shaped plates 51 and 59 are flat L-shaped plate pieces, and the L-shaped corners are oriented at 45 ° with respect to the side portions 54 and 58. Are cut out in a straight line to form cutout portions 57 and 63.

  The L-shaped plate 51 shown in FIG. 5A has a hole 53 for connecting to another plate. The hole 53 is provided near the end of the side portion 54 of the L-shaped plate 51. The L-shaped plate 51 further has a hole 55 for connecting to the flanges of the laminated rubbers 31a and 31b. Two holes 55 are provided near the center of the side portion 54.

  The L-shaped plate 59 shown in FIG. 5B has a hole 61 for connecting to the flanges of the laminated rubbers 31a and 31b. Two holes 61 are provided near the center of the side portion 58.

  As shown in FIGS. 5 (c) and 5 (d), the chevron plates 65 and 71 are composed of a base and two sides of the same length extending in the same direction perpendicular to the base from both ends of the base. , A chevron-shaped pentagonal plate piece formed by two apex sides extending from the end portions of both sides in a direction facing each other in a direction of 45 ° with respect to the sides.

  The chevron plate 65 shown in FIG. 5C has holes 67a and 67b for connecting to other plates. One hole 67 a is provided on both sides in the vicinity of the bottom side end of the chevron plate 65. The hole 67 b is provided in the vicinity of the top 68 of the chevron plate 65. The chevron plate 65 has a hole 69 for connecting to the flanges of the laminated rubbers 31a and 31b. Two holes 69 are provided on both sides in the width direction in the vicinity of the central portion of the chevron plate 65.

  The chevron plate 71 shown in FIG. 5D has a hole 73 for connecting to another plate. The hole 73 is provided in the vicinity of the top 70 of the chevron plate 71. The chevron plate 71 further has a hole 75 for connecting to the flanges of the laminated rubbers 31a and 31b. Two holes 75 are provided on both sides in the width direction in the vicinity of the central portion of the chevron plate 71.

Note that the L-shaped plates 51 and 59 and the chevron plates 65 and 71 have the same thickness. The width 58 a of the side portion 58 of the L-shaped plate 59 is the same as the width 54 a of the side portion 54 of the L-shaped plate 51, and the length 58 b of the side portion 58 of the L-shaped plate 59 is the same as that of the L-shaped plate 51. The width 54a is subtracted from the length 54b of the side portion 54.
Furthermore, the widths 65a and 71a of the chevron plates 65 and 71 are both twice the width 54a. The length 71b of the chevron plate 71 is obtained by subtracting the width 54a from the length 65b of the chevron plate 65.

  As shown in FIG. 5E, the holding plate 77 is a plate having a square plane. The holding plate 77 has a hole 79 for connecting to another plate. One hole 79 is provided at each of the four corners of the holding plate 77.

  As shown in FIG. 5 (f), in the present embodiment, three L-shaped plates are stacked in a layered manner on top and bottom to form a member piece 81, and three chevron plates are stacked in a layered manner on the top and bottom. A member piece 83 is formed.

The member piece 81 is obtained by vertically stacking the notch portions of these plates so that the L-shaped plate 51 is sandwiched between two L-shaped plates 59. At this time, the hole 61 of the L-shaped plate 59 on the upper surface and the lower surface and the hole 55 of the L-shaped plate 51 are vertically communicated to form a flange mounting hole 62a.
Further, the member piece 81 has a convex portion 87 at an end portion 85 which becomes a combination portion with the member piece 83. The convex portion 87 is because the side portion 54 of the L-shaped plate 51 is longer than the side portion 58 of the L-shaped plate 59 by the width 54a, and the end portion thereof protrudes. As described above, the hole 53 is disposed at this end.

The member piece 83 is obtained by vertically stacking the tops of these plates so that the mountain plate 71 is sandwiched between the two mountain plates 65. At this time, the hole 67b of the chevron plate 65 on the upper surface and the lower surface and the hole 73 of the chevron plate 71 communicate with each other vertically to form a plate connecting hole 74a. Further, the hole 69 of the chevron plate 65 on the upper surface and the lower surface and the hole 75 of the chevron plate 71 communicate with each other vertically to form a flange mounting hole 62b.
Further, the member piece 83 has a concave portion 91 at an end portion 89 that becomes a combination portion with the member piece 81. The recess 91 is due to the fact that the length 71b of the chevron plate 71 is shorter by the width 54a than the length 65b of the chevron plate 65, and that portion becomes a depression. At this time, the bottom side end of the chevron plate 65 forms the side wall of the recess 91. As described above, the hole 67a is disposed at this end.

  6A and 6B are views showing the connecting member 93, in which FIG. 6A is a plan view and FIG. 6B is a perspective view. FIG. 6A shows a state before the restraining plate 77 is arranged. In FIG. 6A, the arrangement of the laminated rubber 31a is indicated by a dotted line, as in FIG. 3A.

  As shown in FIG. 6A, in the connecting member 93, the four member pieces 83 are combined into a cross by abutting the top of the mountain shape, and the remaining four member pieces 81 are combined with the cross to form a square shape. Are arranged on the outer peripheral portion so as to form a grid of 4 and are combined with four member pieces 83.

  In the combination portion of the member piece 81 and the member piece 83 on the outer peripheral portion of the connecting member 21, the convex portion 87 (see FIG. 5 (f)) of the member piece 81 from both sides is formed in the concave portion 91 (see FIG. 5 (f)) of the member piece 83. )) Is inserted. At this time, the end portions on the bottom side of the chevron plate 65 on the upper surface and the lower surface of the member piece 83 and the end portions of the side portion 54 of the L-shaped plate 51 of the member piece 81 are placed in an overlapped state. The hole 67a of 65 and the hole 53 of the L-shaped plate 51 are communicated with each other up and down to form a plate connecting hole 74b.

  As shown in FIG. 6 (b), a restraining plate 77 is arranged on the upper surface 97 and the lower surface 98 so as to straddle the top of the four member pieces 83 at the abutting portion of the four member pieces 83 combined in a cross shape. Is done. At this time, each of the four holes 79 of the restraining plate 77 on the upper surface 97 and the lower surface 98 communicates vertically with the plate connection holes 74a (see FIG. 5F) of the four member pieces 83.

As shown in FIG. 6B, the plates of the connecting member 93 combined are integrated using a connecting jig 39 (see FIG. 4). Similarly to the above, the connecting jig 39 is composed of bolts and nuts, and is connected to the plate connecting hole 74b shown in FIG. 6B and the hole where the plate connecting hole 74a and the hole 79 of the holding plate 77 communicate with each other on the upper surface side. The plates are connected by passing the bolts from and tightening the nuts from the lower surface side.
In this way, the connecting member 93 is manufactured by combining the member pieces 81 and 83 in a plane. The connecting member 93 is formed in a lattice shape so that the planar positions corresponding to the upper and lower laminated rubbers 31a and 31b are hollow portions.

  In the seismic isolation device 10 shown in FIG. 4, the upper laminated rubber 31a and the lower laminated rubber 31b are arranged so as to correspond to the positions of the cavities of the connecting member 93. At this time, the upper laminated rubber 31a described above is arranged. The bolt holes of the lower flange 35a and the bolt holes of the upper flange 37b of the lower laminated rubber 31b communicate with the flange mounting holes 62a and 62b of the member pieces 81 and 83 of the connecting member 93 shown in FIG. To do.

The upper laminated rubber 31 a, the connecting member 93, and the lower laminated rubber 31 b constituting the seismic isolation device 10 are connected using a connecting jig 41.
Similarly to the above, the connecting jig 41 is composed of bolts and nuts, and the bolts are passed from the lower flange 35a side of the upper laminated rubber 31a through the holes formed to communicate as described above, so that the lower laminated rubber is provided. Each member is connected by tightening a nut from the upper flange 37b side of 31b. In this way, the seismic isolation device 10 shown in FIG. 4 is manufactured.

Also in the second embodiment described above, effects such as improved transportability of the connecting member 93 can be obtained as in the first embodiment.
As described above, various configurations of the connecting member are conceivable as long as a plurality of member pieces obtained by overlapping a plurality of plate pieces are combined so as to have a hollow portion on a plane. The positions of the cavities are not necessarily limited to those corresponding to the planar positions of the laminated rubbers 31a and 31b.

  Furthermore, in the above-described embodiment, the upper and lower two-stage laminated rubber is connected via the connecting member, but the number of connecting stages of the laminated rubber is not limited to this. The number and arrangement of the laminated rubbers in the same stage are not limited to those arranged in 2 × 2 rows as in the above embodiment, but can be variously determined.

  In addition, in the above-described embodiment, the laminated rubber is used as a seismic isolation member, and the seismic isolation device in which the laminated rubber is arranged in multiple stages has been described. However, other seismic isolation members having a seismic isolation function instead of the laminated rubber, for example, rolling It is also possible to use a bearing or the like.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs.

1, 10 ......... Seismic isolation device 2, 7, 51, 59 ......... L-shaped plate 13, 77 ......... Pressure plate 17, 19, 81, 83 ......... Member piece 21, 93 ......... Connecting member 25, 87 ......... Convex part 29, 91 ......... Concave part 31a, 31b ... ... Laminated rubber 65, 71 ... ... Angle plate

Claims (3)

A seismic isolation device in which seismic isolation members are connected up and down by connecting members,
The seismic isolation device according to claim 1, wherein the connecting member is a combination of a plurality of member pieces configured by vertically stacking a plurality of plate pieces so as to have a portion that becomes a cavity on a plane.   At least one of the combination parts of the member pieces is arranged such that at least one of the plate pieces constituting one member piece to be combined and at least one of the plate pieces constituting the other member piece are overlapped, and connected. The seismic isolation device according to claim 1, wherein the seismic isolation device is connected vertically using a tool.   In at least one of the combined parts of the member pieces, the restraining members are arranged on the upper surface and the lower surface so as to straddle the respective member pieces to be combined, and the restraining members on the upper surface and the lower surface connect each member piece and the connecting jig. The seismic isolation device according to claim 1, wherein the seismic isolation device is connected vertically.

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