JP5694175B2 - LAMINATED RUBBER BODY JOINING MEMBER AND LAMINATED RUBBER BODY AND STRUCTURE USING THE JOINING MEMBER - Google Patents

Description

  The present invention relates to a joining member used for a laminated rubber body used for a seismic isolation structure in a building structure, and a laminated rubber body and a structure using the joining member.

  Bearing mounting structure for building structures and civil engineering structures, especially laminated rubber bodies used for seismic isolation structures in building structures, laminated rubber bodies used for seismic isolation structures and horizontal force distribution structures in civil engineering structures Due to the structure of the rubber body, it has a large yield strength in the compression direction and can support the load of the upper structure, but the yield strength in the tensile direction is inferior to that in the compression direction.

  Therefore, at the initial stage of development of a laminated rubber body as a seismic isolation device, a tensile force is not applied to the laminated rubber body, and the laminated rubber body and the upper part are The substructure was attached by connecting with dowel pins, and the designer was freed from studying the tensile force in the vertical direction.

  In this mounting structure, as shown in FIG. 12, the flange plates 66 and 67 of the laminated rubber body 64 are fixed to the anchor plate 65 fixed to the lower structure 69 such as the foundation of the structure 61 and the upper structure 70. When the mounting bolt 62 and the cap nut 63 are fixed to the upper plate 68, and a large horizontal deformation acts on the laminated rubber body 64, the relative relationship between the upper surface 64a and the lower surface 64b of the laminated rubber body 64 in the horizontal direction. Due to the deviation, a rotational moment is generated in the laminated rubber body 64, and a vertical pulling force is generated in the mounting structure portion of the laminated rubber body 64. However, when the laminated rubber body 64 and the dowel pins 71 protruding from the flange plates 66 and 67 are separated from each other, the pulling force can be released, and even if the horizontal deformation caused by a large earthquake is caused, An excessive tensile force is not generated in the vertical direction of the rubber body 64. For this reason, damage and breakage of the laminated rubber body 64 can be preferably prevented, and further, excessive input is not applied to the attachment portion of the upper structure 70 to the laminated rubber body 64, so that the upper structure 70 is damaged. There was also an effect that could be prevented.

  However, according to the dowel pin type joining method, the dowel pin part is separated at the time of a large horizontal deformation, and the tensile force in the vertical direction does not act on the support mounting structure part. There was a risk of deformation in the rubber body itself. In such a state, the horizontal resistance force of the laminated rubber body is reduced, and there is a risk that the laminated rubber body starts to fall. Therefore, when the mounting structure using the dowel pins is adopted, the horizontal force is reduced. It was necessary to determine the use limit of the laminated rubber body with the amount of deformation as the fall limit (rollout displacement) (see Non-Patent Document 1, for example).

  For this reason, in general, a fastening means using a mounting bolt that does not need to consider the above-mentioned fall limit has been widely used to connect the laminated rubber body and the upper and lower structures. The person who fully understands that the tensile strength of the laminated rubber body is low and, after grasping the characteristics by many experimental verifications, does not cause the laminated rubber body to generate a tensile force or the tensile direction does not occur. Considering the proof stress, the design has been carried out with a high safety factor secured.

  However, in recent years, the seismic isolation design of building structures has been applied to high-rise buildings and building structures with a large aspect ratio. In order to prevent the laminated rubber body from being transmitted with a tensile force that is higher than the yield strength in the vertical direction, a device for providing an anti-lifting device between the upper structure and the ground has been devised.

  Furthermore, in addition to the device of the anti-lifting device arranged between the upper structure and the ground, in order to prevent a large tensile force from being transmitted to the laminated rubber body, the laminated rubber body and the upper and lower structures are Various studies have been conducted on the binding method.

  In this way, if the laminated rubber body is connected to the upper structure or the lower structure with bolts, if a large horizontal deformation occurs in the laminated rubber body, the vertical tensile force due to the rotational moment is exerted on the laminated rubber body. May cause damage to or damage to the laminated rubber body, damage to the structure due to excessive input to the superstructure or substructure, and, in addition, in a building structure with a large aspect ratio, There is a possibility that an excessive tensile force due to rocking acts on the laminated rubber body. On the other hand, if a dowel pin type connection structure is adopted in order to avoid the tensile force in the vertical direction, there is a limit on the fall limit, and the connection method of laminated rubber bodies is selected for both the bolt connection structure and the dowel pin type connection structure. However, the structure was not satisfactory.

  Therefore, for example, Patent Document 1 discloses that one mounting plate (flange plate) fixed to one end surface of the laminated rubber seismic isolation device and an outer edge of one end surface of the laminated rubber seismic isolation device. It is fixed to one mounting plate and to the mounting surface of the foundation or structure facing one end surface of the laminated rubber seismic isolation device inside the portion fixed to the one mounting plate. Since the other mounting plate is provided, when the lift occurs between the upper structure and the lower structure, the mutual fixing portion of both mounting plates can move upward, and the mounting plate can be bent. Since rigidity can be utilized, a technique is disclosed in which a large vertical tensile force does not act on the laminated rubber seismic isolation bearing device.

  In Patent Document 2, a thin-walled portion or an opening for reducing the bending rigidity of the flange member is formed in a portion between the outer periphery of the laminated rubber portion and the fixing portion to the structural member, and the laminated rubber body A technique for preventing the laminated rubber body from being damaged even when a pulling force is applied is disclosed.

  Further, Patent Document 3 discloses a configuration in which the bolt is fastened to the isolator and the structure via a buffer seat, for example, a disc spring, and is firmly tightened for horizontal movement, and the buffer seat is used for vertical movement. A technique for making a soft fastening is shown.

  Further, Patent Document 4 discloses a mechanism for pulling out a seismic isolation device in which a cushion material such as a rubber sheet is interposed between a flange portion of a laminated rubber and a head portion of a bolt that tightly connects the casing. As shown, a structure consisting of a ring-shaped steel plate and rubber sheet is shown, and the cushion material can be deformed in the thickness direction, so even if an instantaneous lifting force is applied during an earthquake, etc., deformation or destruction of the cushion material A technique for releasing the force and applying no tensile force to the laminated rubber is shown.

  Furthermore, Patent Document 5 discloses a vertical motion seismic isolation body in which a laminated rubber body is arranged so that the shear direction of the laminated rubber body acts in the vertical direction against vertical vibration. Although it is different from the problem, the mounting bolt of the horizontal motion isolation body that shears in the horizontal direction and the laminated rubber body that constitutes the horizontal motion isolation body even if the upper structure is lifted up in the secondary direction Thus, a vertical tensile force does not act on the laminated rubber portion.

Japanese Unexamined Patent Publication No. 2005-163281 Japanese Unexamined Patent Publication No. 2002-195327 Japanese Unexamined Patent Publication No. 10-110551 Japanese Unexamined Patent Publication No. 11-153191 Japanese Unexamined Patent Publication No. 2000-130506

By James M. Kerry, translated by Japan Vibration Technology Association / directed by Takashi Fujita, “Basic theory of seismic isolation structure and laminated rubber”, Tokyo Denki University Press, p160-p162

  However, a laminated rubber body mounting plate is made to have a double structure as in Patent Document 1, or a flange is processed to reduce the bending rigidity of the flange member of the laminated rubber body as in Patent Document 2, so that the laminated rubber is processed. The means for reducing the tensile force on the body involved a design change of the structure body of the laminated rubber body, which required cost and time and required a review of the installation space, and was not easily applicable.

  In that respect, the technique of interposing a cushioning material in the attachment portion of the laminated rubber body, such as Patent Document 3 and Patent Document 4, can reduce the tensile force applied to the laminated rubber due to lifting, and further increases the size of the laminated rubber body. It can be said that it is preferable because it can cope with the relaxation of the pulling force caused by horizontal deformation. However, when combining a disc spring made of steel as in Patent Document 3, rust prevention of the contact portion of the steel material or a portion that causes elastic deformation becomes a problem. In the case of using a cylindrical rubber washer as a cushion material made of a ring-shaped steel plate and a rubber sheet as in Patent Document 4, since it is a simple cylindrical form utilizing the compression characteristics of the rubber material, In this case, the rubber material bulges in the direction of the cylindrical inner diameter, causing a shock with the mounting bolt, which may lead to damage to the buffer material made of the cylindrical rubber washer.

  The present invention has been made in view of such a situation, and without changing the shape of the mounting portion of the large-sized laminated rubber body, in the seismic isolation building structure having a large aspect ratio, the upper structure A joint that can absorb the amount of lift even when lift occurs, and can prevent damage or damage to the laminated rubber body by reducing the tensile force in the vertical direction against the elastic layer or adhesive layer of the laminated rubber body An object of the present invention is to provide a member, and to provide a laminated rubber body provided with the joining member and a structure supported by the laminated rubber body.

  In order to achieve the above object, the present invention provides a laminated rubber body joining member in which a flange plate is joined to each of upper and lower end surfaces of a laminated rubber portion in which elastic layers and reinforcing plates made of a rubber material are alternately laminated. The laminated rubber body formed by joining the laminated rubber body to the upper structure or / and the lower structure through the flange plate while allowing the laminated rubber body and the structure to separate in the vertical direction, so-called floating. A joining member for a rubber body, wherein one side is joined to the flange plate so as to follow the vertical separation of the upper flange plate and / or the lower flange plate by shear deformation, and the other side is the upper structure. Alternatively, the upper anchor plate fixed to the lower structure and / or the elastic member fixed to the lower anchor plate side is fixed.

  According to the present invention, in the base-isolated building structure having a large aspect ratio, the upper structure is lifted by rocking or the like, and a tensile force acts on the laminated rubber body mounting portion in the vertical direction. Even when the vertical lift occurs between the flange plate and the anchor plate as the lower structure, the joining member can cause a shear deformation in the vertical direction. In addition to being able to absorb the displacement, it is possible to prevent damage and damage to the laminated rubber body without applying excessive stress to the laminated rubber body.

  In the laminated rubber body joining member, the elastic member is a shear-shaped cylindrical rubber body, and is inserted into a mounting bolt hole drilled in the upper or / and lower flange plate. The outer peripheral surface side, which is one side, is joined to the flange plate, and the inner peripheral surface side, which is the other side of the shear-shaped cylindrical rubber body, is connected to the upper side via a mounting bolt that passes through the shear-shaped cylindrical rubber body. Or / and can be fixed to the lower anchor plate side. Thus, for example, when the lower flange plate is lifted, the outer peripheral surface side of the cylindrical rubber body moves upward, and the inner peripheral surface side is fixed to the lower anchor plate or the like as the lower structure by mounting bolts. Therefore, it is possible to prevent the cylindrical rubber from undergoing shear deformation, absorbing upward floating, and generating a large tensile force in the elastic layer and adhesive layer of the laminated rubber body.

  In the laminated rubber body joining member, the sheared cylindrical rubber body is formed of a cylindrical steel material on an inner peripheral surface and an outer peripheral surface, and at least one cylindrical steel material is disposed between the inner peripheral surface and the outer peripheral surface. In addition, a cylindrical rubber is disposed between the cylindrical steel materials, and each of the adjacent cylindrical steel materials and the cylindrical rubber can be formed into a laminated rubber shape having a concentric circular shape in cross-sectional view in which each is vulcanized and bonded.

  In the laminated rubber body joining member, the inner peripheral surface can be subjected to female threading that is screwed with the mounting bolt.

  Further, the tubular steel material on the inner peripheral surface side of the shear-shaped tubular rubber body is arranged so that the upper or / and lower flange plate is separated from the upper or / and lower anchor plate. Extending long enough to ensure a predetermined floating amount, the end of the outer circumferential surface side tubular steel material of the sheared tubular rubber body in the direction away from the upper or / and lower anchor plate, A flange portion can be provided by expanding the diameter to the outer peripheral side so as to engage with the upper or / and lower flange plate.

  Further, a cylinder having a height sufficient to ensure a predetermined floating amount of the laminated rubber body between the tubular steel material on the inner peripheral surface side of the sheared cylindrical rubber body and the enormous portion of the mounting bolt. An end portion of the outer circumferential surface side tubular steel material of the sheared tubular rubber body in a direction away from the upper or / and lower anchor plate, and the upper or / and lower flange plate A flange portion can be provided by expanding the diameter toward the outer peripheral side so as to be engaged.

  In the laminated rubber body joining member, a stopper for restricting deformation of the sheared tubular rubber body may be disposed between the sheared tubular rubber body and the mounting bolt. As a result, when a large floating amount exceeding a predetermined set amount occurs in the joining member, the shear deformation amount of the cylindrical rubber of the joining member can be suppressed within a safe range, and the tubular rubber is prevented from being damaged. can do.

  Moreover, this invention is a laminated rubber body, Comprising: One of the said laminated rubber body joining members is provided, It is characterized by the above-mentioned. Thereby, as described above, an excessive tensile force does not act on the laminated rubber body, and an excessive tensile force does not act on the fixing portion of the laminated rubber body and the structure. Safety can be improved.

  Furthermore, the present invention is a structure, which is supported by the laminated rubber body. As described above, an excessive tensile force does not act on the laminated rubber body and the fixing portion of the structure, and the safety as the seismic isolation structure can be improved.

  As described above, according to the present invention, even when a floating structure is generated in a building structure having a large aspect ratio without changing the shape of the attachment portion of the large laminated rubber body, the amount of the rising is absorbed. However, it is possible to provide a joining member that can prevent the laminated rubber body from being broken or damaged, and to provide a laminated rubber body that includes the joining member and a structure that is supported by the laminated rubber body.

It is sectional drawing which shows the attachment state of 1st Embodiment of the joining member for laminated rubber bodies concerning this invention (henceforth abbreviated as "joining member" suitably). It is a disassembled perspective view for demonstrating the attachment procedure of the joining member of FIG. It is a partially broken sectional view of the laminated rubber body and the structure to which the joining member of FIG. 1 is attached. It is sectional drawing which shows the deformation | transformation state of the joining member at the time of the floating of the laminated rubber body of FIG. It is sectional drawing which shows the attachment state of 2nd Embodiment of the joining member concerning this invention. It is a figure which shows the attachment state of 3rd Embodiment of the joining member concerning this invention, Comprising: (a) is sectional drawing, (b) is a disassembled perspective view. It is sectional drawing which shows the attachment state of 4th Embodiment of the joining member concerning this invention. It is sectional drawing which shows the attachment state of 5th Embodiment of the joining member concerning this invention. It is sectional drawing which shows the attachment state of 6th Embodiment of the joining member concerning this invention. It is sectional drawing which shows the attachment state of 7th Embodiment of the joining member concerning this invention. It is sectional drawing which shows the attachment state of 8th Embodiment of the joining member concerning this invention. It is the schematic which shows the state which the big horizontal relative deformation | transformation produced between the upper structure and lower structure provided with the conventional dowel pin.

  Next, an embodiment for carrying out the present invention will be described in detail with reference to the drawings.

  1 to 3 show a first embodiment of a joining member for laminated rubber bodies according to the present invention. The joining member 1 includes an upper structure 8 and a lower structure of a structure 13 as shown in FIG. The laminated rubber body 7 interposed between the body 9 and the upper structure 8 and the lower structure 9 and the laminated rubber body 7 are joined to each other while allowing the raised structure to float.

  The laminated rubber body 7 is formed by joining the flange plates 3 (3A, 3B) to the upper and lower end surfaces of the laminated rubber portion 6 in which the rubber layers 6a and the reinforcing plates 6b are alternately laminated, and the rubber layer 6a and the reinforcing plate. The contact surfaces of 6b and the rubber layer 6a and the flange plate 3 are integrally formed by vulcanization adhesion. A cylindrical lead plug 6c is enclosed in the through hole of the laminated rubber portion 6, and is sealed with two cap plates 6d.

  The upper anchor plate 4B is fixed to the lower surface of the upper structure 8 via a headed stud 11B, and the lower anchor plate 4A is fixed to the upper surface of the lower structure 9 via a headed stud 11A. The joining member 1 (1A, 1B) is attached to the extending portion of the flange plate 3 of the rubber body 7.

  As shown in FIGS. 1 and 2, the joining member 1 is formed as a sheared cylindrical rubber body and has an inner peripheral surface side cylindrical steel material 1a having an insertion hole 1a ′ and an outer peripheral surface side having a flange portion 1e ′. A cylindrical steel material 1e, an intermediate cylindrical steel material 1c, and cylindrical rubber materials 1b and 1d interposed between the cylindrical steel materials 1a, 1c and 1e, respectively, and the adjacent cylindrical steel material and cylindrical shape The rubber is firmly bonded to each other by an adhesive, and preferably vulcanized adhesive used for the laminated rubber portion 6 or the like. As a result, the joining member 1 is formed in a laminated rubber shape that is concentric in a sectional view.

  The cylindrical steel materials 1a, 1c, and 1e are cylinders formed by bending a general structural rolled steel plate, hot rolled mild steel plate, or cold rolled steel plate that is usually used for laminated rubber bodies into a cylindrical shape with a predetermined diameter. A shaped steel plate may be used, or a cylindrical steel pipe formed in a cylindrical shape such as a carbon steel pipe may be used. Further, in place of these steel materials, there is no problem in the shearing function in the axial direction of the cylinder and the compressive deformation function in the direction of the cylindrical outer surface, which are required for the joining member made of sheared cylindrical rubber. If so, non-metallic materials such as synthetic resin and aluminum can also be used.

  The rubber material used for the cylindrical rubbers 1b and 1d is preferably a material that has excellent mechanical properties, is small in secular change, and has favorable environmental properties such as water resistance and ozone resistance. Either a natural rubber or a synthetic rubber may be used, or a rubber material obtained by mixing natural rubber and synthetic rubber may be used.

  The mounting bolt 2 is a hexagon socket head cap bolt, and a hexagon socket 2c is formed in the head (enlarged portion) 2a and has a male screw portion 2b. The cap nut 5 has a large diameter portion 5a and a small diameter portion 5b, and has a female screw portion 5c that opens on the upper surface of the small diameter portion 5b.

  When attaching the joining member 1, as shown in FIG. 2, the small diameter portion 5b of the cap nut 5 is accommodated in the through hole 4a of the anchor plate 4, and the joining member 1 is accommodated in the through hole 3a of the flange plate 3. 1, the flange portion 1 e ′ of the outer peripheral surface side cylindrical steel material 1 e of the joining member 1 is brought into contact with the upper surface of the flange plate 3, the flange plate 3 and the anchor plate 4 are overlapped, and the mounting bolt 2 is joined. After being inserted into the insertion hole 1 a ′ of the member 1, the male screw portion 2 b of the mounting bolt 2 and the female screw portion 5 c of the cap nut 5 are screwed together. Thereby, the inner peripheral surface side cylindrical steel material 1a of the joining member 1 is firmly held between the enormous portion 2a of the mounting bolt 2 and the small diameter portion 5b of the cap nut 5, and is fixedly fixed to the anchor plate 4. On the other hand, the flange portion 1 e ′ of the outer peripheral surface side cylindrical steel material 1 e of the joining member 1 is joined to the upper surface of the flange plate 3.

  As shown in FIG. 3, the joining member 1 is interposed between each of the plurality of mounting bolts 2A of the laminated rubber body 7 between the lower flange plate 3A and the lower anchor plate 4A, and the upper flange plate. Between 3B and the upper anchor plate 4B, each of the plurality of mounting bolts 2B of the laminated rubber body 7 is interposed in the same manner as described above.

  Next, the operation of the joining member 1 having the above configuration will be described with reference to FIGS. 3 and 4.

  In the event of an earthquake or the like, when the upper structure 8 of the structure 13 is lifted by rocking or the like and a tensile force acts on the mounting portion of the laminated rubber body 7 in a vertical direction, specifically, as shown in FIG. Even if a vertical lift occurs between the flange plate 3 of the laminated rubber body 7 and the anchor plate 4 fixed to the lower structure 9, the inner peripheral surface of the joining member 1 formed in the laminated rubber shape Since the side cylindrical steel material 1a is fixed to the anchor plate 4 and the flange portion 1e 'of the outer peripheral surface side cylindrical steel material 1e is joined to the upper surface of the flange plate 3, the joining member 1 is in the vertical direction. Shear deformation can be generated, the upward rising of the laminated rubber body 7 is absorbed, and a large tensile force is prevented from being generated in the elastic layer, the adhesive layer, etc. of the laminated rubber body 7, and the laminated rubber body 7 is damaged. And breakage can be prevented.

  Further, by using the joining member 1 having a cylindrical laminated rubber structure having a concentric circular shape in cross section, the flange plate 3 can be easily deformed in the lifting direction, in other words, the shearing direction of the joining member 1. Deformation (so-called compression deformation) from the outer peripheral surface of the concentrically laminated members that are orthogonal to each other in the direction of the central axis (so-called compression deformation), in other words, transmission of the horizontal force of the laminated rubber body 7 that supports the structure 13 However, it can be used without any special consideration in comparison with the state of force transmission by a conventional mounting bolt.

  Further, by arranging the joining member 1 made of sheared cylindrical rubber on each of the mounting bolts of the laminated rubber body 7, the horizontal force acting on the laminated rubber body 7 causes the concentric cylindrical lamination of the joining member 1. Slight deformation that occurs when acting from the outer peripheral surface of the rubber toward the center can prevent concentration on a specific mounting bolt, and can also avoid individual destruction that may occur with conventional mounting bolts. .

  Further, the floating of the flange plate 3 is caused by a fall phenomenon (rollout phenomenon) accompanying horizontal shear deformation of the laminated rubber body 7 disposed between the upper structure 8 and the lower structure 9, and the upper structure. 8, even when it is not perpendicular to the axis of the mounting bolt 2 but at an angle with the axis, bending deformation occurs in the cylindrical rubbers 1 b and 1 d of the joining member 1, and the flange plate 3 floats. There will be no sag or friction that would be a great resistance.

  Further, in the rising phenomenon of the end portion of the laminated rubber body 7 due to a bending moment generated when a large horizontal shear deformation occurs in the laminated rubber body 7, the vertical excess of the rubber material and the adhesive layer in the range where the lifting occurs is caused. As a result of reducing the tensile force, the soundness of the laminated rubber body 7 can be secured, and a significant increase in the horizontal force due to the hardening phenomenon that appears when the laminated rubber body 7 undergoes a large horizontal shear deformation can be suppressed. Therefore, it is possible to prevent the seismic isolation cycle from being shortened under a large horizontal shear deformation, to obtain a long cycle in a wide range, and to secure safety during a large earthquake.

  In the above embodiment, the flange portion 1e ′ of the outer peripheral surface side cylindrical steel material 1e of the joining member 1 is bonded to the upper surface of the flange plate 3. However, the outer peripheral surface side cylindrical shape is not provided without providing the flange portion 1e ′. The outer peripheral surface of the steel material 1e and the inner peripheral surface of the through hole 3a of the flange plate 3 can be fitted together, and the outer peripheral surface side cylindrical steel material 1e can be fixed to the flange plate 3. Further, in order to prevent the flange member 1e ′ of the outer peripheral surface side cylindrical steel material 1e from being restored to the initial position after the upper flange plate 3B is lifted, the flange member 1e ′ is The flange plate 3 may be mechanically fixed with a fixing screw or the like.

  Next, 2nd Embodiment of the joining member for laminated rubber bodies concerning this invention is described, referring FIG.

  This joining member 21 is different only in that it has an inner circumferential surface side cylindrical steel material 21a extending upward from the upper surface of the joining member 1 on the inner circumferential surface side cylindrical steel material 1a of the joining member 1 shown in FIG. The configuration of is the same as that of the joining member 1. Further, as the mounting bolt 22, a hexagon bolt is used instead of the hexagon socket head bolt as the mounting bolt 2 of FIG. In addition, although the flange plate 3, the anchor plate 4, and the cap nut 5 use the thing similar to 1st Embodiment, illustration is abbreviate | omitted, the joining member 21 is changed to the joining member 1, and the attachment bolt 22 is attached to the attachment bolt 2. It can replace with and can be used for the structure 13 shown in FIG.

  The joint member 21 is provided with the inner peripheral surface side cylindrical steel material 21a because, as shown in FIG. 4, the anchor plate fixed to the flange plate 3 of the laminated rubber body 7 and the lower structure 9 in the event of an earthquake or the like. 4, the head 22 a of the mounting bolt 22 and a portion other than the inner peripheral surface side cylindrical steel material 21 a of the joining member 21 do not come into contact with each other even if the vertical lifting occurs. . Thereby, the laminated rubber body 7 can be joined to the upper structure 8 and the lower structure 9 shown in FIG. 3 while ensuring a predetermined floating amount of the laminated rubber body 7 by the joining member 21. The attachment procedure and operation of the joining member 21 are the same as those of the joining member 1 shown in FIG. 1 to FIG.

  Next, a third embodiment of the laminated rubber body bonding member according to the present invention will be described with reference to FIG.

  In the present embodiment, the joining member 1 shown in FIG. 1 is used, a hexagon bolt is used as the mounting bolt 22, and the head 22a of the mounting bolt 22 and the inner peripheral surface side cylindrical steel material 1a of the joining member 1 are used. A collar 24 is interposed. In addition, the flange plate 3, the anchor plate 4 and the cap nut 5 are the same as those in the first embodiment, and the illustration thereof is omitted, but the joining member 1, the mounting bolt 22 and the collar 24 are shown in FIG. It can be used for the object 13.

  As in the second embodiment, the collar 24 is provided, as shown in FIG. 4, in the event of an earthquake or the like, the anchor plate 4 fixed to the flange plate 3 and the lower structure 9 of the laminated rubber body 7. The head 22a of the mounting bolt 22 and the portion other than the inner peripheral surface side cylindrical steel material 1a of the joining member 1 are prevented from coming into contact with each other even when the vertical lift occurs. Thus, the laminated rubber body 7 can be joined to the upper structure 8 and the lower structure 9 shown in FIG. 3 while ensuring a predetermined floating amount of the laminated rubber body 7 by the joining member 1. The attachment procedure and operation of the joining member 1 are the same as those of the joining member 1 shown in FIGS.

  Next, 4th Embodiment of the joining member for laminated rubber bodies concerning this invention is described, referring FIG.

  The joining member 31 is different from the joining member 1 shown in FIG. 1 only in that an internal thread portion 31 b is screwed on the inner surface of the inner peripheral surface side cylindrical steel material 31 a, and the other configuration is the same as the joining member 1. Further, as the mounting bolt 32, a hexagon socket set screw is used instead of the hexagon socket bolt as the mounting bolt 2 of FIG. In addition, although the flange plate 3, the anchor plate 4, and the cap nut 5 use the same thing as 1st Embodiment, illustration is abbreviate | omitted, the joining member 31 is changed to the joining member 1, and the attachment bolt 32 is attached to the attachment bolt 2. It can replace with and can be used for the structure 13 shown in FIG.

  In the present embodiment, the internal thread 31b of the joining member 31 accommodated in the through hole 3a of the flange plate 3 and the external thread 32a of the mounting bolt 32 are screwed together, and the mounting bolt 32 and the cap nut 5 are further screwed together. The inner peripheral surface side cylindrical steel material 31a of the joining member 31 is fixed to the anchor plate 4 in a stationary manner. As a result, as shown in FIG. 4, even in the event of an earthquake or the like, even if the vertical rise occurs between the flange plate 3 of the laminated rubber body 7 and the anchor plate 4 fixed to the lower structure 9, The joining member 1 can cause shear deformation in the vertical direction, absorbs the upward floating of the laminated rubber body 7, and prevents a large tensile force from being generated in the elastic layer, the adhesive layer and the like of the laminated rubber body 7. In addition, the laminated rubber body 7 can be prevented from being damaged or broken.

  Next, a fifth embodiment of the laminated rubber body bonding member according to the present invention will be described with reference to FIG.

  In this embodiment, the joining member 1 shown in FIG. 1 is used, and a hexagon socket head bolt having a neck length longer than that of the mounting bolt 2 shown in FIG. A lift prevention stopper 43 is interposed between the portion 42 a and the inner peripheral surface side cylindrical steel material 1 a of the joining member 1. The lift prevention stopper 43 is made of steel or the like and includes a flange portion 43b at the upper end portion of a cylindrical main body 43a. In addition, the flange plate 3, the anchor plate 4, and the cap nut 5 are the same as those in the first embodiment, and the illustration thereof is omitted. However, the joining member 1, the mounting bolt 42, and the lifting prevention stopper 43 are shown in FIG. It can be used for the structure 13 shown.

  As shown in FIG. 4, the anti-lifting stopper 43 is provided between the flange plate 3 of the laminated rubber body 7 and the anchor plate 4 fixed to the lower structure 9 during an earthquake or the like in the vertical direction. 8, the head 42 a of the mounting bolt 42 and the portion other than the inner peripheral surface side cylindrical steel material 1 a of the joining member 1 are not contacted with each other in FIG. When the outer peripheral surface side cylindrical steel material 1e of the joining member 1 is moved upward by this, the outer peripheral surface side cylindrical steel material 1e comes into contact with the lower surface of the flange portion 43b of the lifting prevention stopper 43 and further moves upward. It is to prevent.

  With the above configuration, the laminated rubber body 7 is attached to the upper structure body 8 and the lower structure body 9 shown in FIG. 3 while securing a predetermined floating amount of the laminated rubber body 7 as in the joining member 1 shown in FIG. When the joint member 1 is excessively sheared, in other words, when a large lifting amount that exceeds a predetermined set amount occurs, the outer peripheral surface side cylindrical steel material 1e is lifted by the stopper 43. Since the amount of shear deformation of the cylindrical rubbers 1b and 1d of the joining member 1 can be controlled within a safe range by coming into contact with the lower surface of the flange portion 43b, the laminated rubber body 7 can be prevented from being damaged.

  Even when this joining member 1 is used, even when the lift of the flange plate 3 is not perpendicular to the axis of the mounting bolt 42 but occurs at an angle with the axis, the cylindrical rubbers 1b and 1d of the joining member 1 Bending deformation is produced, and there is an effect that there is no sag or friction that becomes a large resistance against the rising of the flange plate 3.

  Next, a sixth embodiment of the laminated rubber body bonding member according to the present invention will be described with reference to FIG.

  In the present embodiment, a washer 23 as a lift prevention stopper is further interposed between the head 22a of the mounting bolt 22 and the cylindrical steel material 21a on the inner peripheral surface side of the joining member 21 in the joining structure shown in FIG. Disguise. By using this washer 23, as shown in FIG. 4, it floats in the vertical direction between the flange plate 3 of the laminated rubber body 7 and the anchor plate 4 fixed to the lower structure 9 during an earthquake or the like. 9, in FIG. 9, the head 22 a of the mounting bolt 22 and the portion other than the inner peripheral surface side cylindrical steel material 21 a of the joining member 21 are prevented from coming into contact with each other and joined by the above-described vertical lifting. When the outer peripheral surface side cylindrical steel material 21e of the member 21 moves upward, it is possible to prevent the outer peripheral surface side cylindrical steel material 21e from coming into contact with the lower surface of the washer 23 and further moving upward.

  With the above-described configuration, the laminated rubber body 7 is joined to the upper structure 8 and the lower structure 9 shown in FIG. 3 while securing a predetermined floating amount of the laminated rubber body 7 as in the joining structure shown in FIG. In addition, when excessive shear deformation occurs in the joining member 21, in other words, a large floating amount that exceeds a predetermined set amount, the outer peripheral surface side cylindrical steel material 21 e comes into contact with the lower surface of the washer 23. Since the shear deformation amount of the cylindrical rubbers 21b and 21d of the joining member 21 can be suppressed within a safe range, the laminated rubber body 7 can be prevented from being damaged.

  Next, a seventh embodiment of the laminated rubber body bonding member according to the present invention will be described with reference to FIG.

  In the present embodiment, a washer 23 as an anti-lifting stopper is interposed between the head 22 a of the mounting bolt 22 and the upper surface of the collar 24 in the joining structure shown in FIG. Also with this configuration, the laminated rubber body 7 is secured to the upper portion shown in FIG. 3 while ensuring a predetermined floating amount of the laminated rubber body 7 shown in FIG. 4 as in the joint structure shown in FIGS. When the joining member 1 can be joined to the structural body 8 and the lower structural body 9 and a large lifting amount that is equal to or larger than a predetermined set amount occurs, the outer peripheral surface side cylindrical steel material 1e is placed on the lower surface of the washer 23. Since the amount of shear deformation of the cylindrical rubbers 1b and 1d of the joining member 1 can be suppressed within a safe range, damage to the rubber material can be prevented.

  Next, an eighth embodiment of the laminated rubber body bonding member according to the present invention will be described with reference to FIG.

  In the present embodiment, the joining member 31 shown in FIG. 7 is used, a hexagon socket set screw having a longer overall length than the mounting bolt 32 shown in FIG. 7 is used as the mounting bolt 35, and the male thread portion 35a of the mounting bolt 35 is used. The female threaded portion 36a of the anti-lifting stopper 36 is screwed into this. Also with this configuration, the laminated rubber body 7 is secured to the upper portion shown in FIG. 3 while ensuring a predetermined floating amount of the laminated rubber body 7 shown in FIG. 4 as in the joint structure shown in FIGS. When the joining member 31 can be joined to the structure 8 and the lower structure 9 and a large lifting amount equal to or larger than a predetermined set amount is generated, the outer peripheral surface side cylindrical steel material 31e is lifted up. Since the amount of shear deformation of the cylindrical rubbers 31b and 31d of the joining member 31 can be suppressed within a safe range, damage to the rubber material can be prevented.

  In the above-described embodiment, the joining member 1 and the like are provided with three cylindrical steel materials 1a, 1c, and 1e and cylindrical rubbers 1b and 1d interposed between the cylindrical steel materials. However, it may be configured by two cylindrical steel materials 1a and 1e without providing the intermediate cylindrical steel material 1c, and conversely, a plurality of intermediate cylindrical steel materials 1c may be provided. it can. Further, in the form in which the anti-lifting stopper is provided, if a cushioning sheet is disposed between the stopper and the joining member, impact at the time of contact can be reduced.

  Moreover, the joining member for laminated rubber bodies according to the present invention is not limited to the above-mentioned sheared cylindrical rubber body, and one side follows the vertical separation of the lower flange plate 3A or the upper flange plate 3B by shear deformation. Thus, the lower flange plate 3A or the upper flange plate 3B is joined, and the other side is fixed to the lower anchor plate 4A side fixed to the lower structure 9 or the upper anchor plate 4B side fixed to the upper structure 8. Any elastic member that is fixed is a target.

1 (1A, 1B) Laminated rubber body joining member 1a Inner circumferential surface side cylindrical steel material 1a 'Insertion hole 1b Cylindrical rubber 1c Intermediate cylindrical steel material 1d Cylindrical rubber 1e Outer circumferential surface side cylindrical steel material 1e' Flange portion 2 ( 2A, 2B) Mounting bolt (Hexagon socket head cap screw)
2a Head 2b Male thread 2c Hexagonal hole 3 (3A, 3B) Flange plate 3a Through hole 4 (4A, 4B) Anchor plate 4a Through hole 5 (5A, 5B) Cap nut 5a Large diameter part 5b Small diameter part 5c Female thread part 6 Laminated rubber portion 6a Rubber layer 6b Reinforcement plate 6c Lead plug 6d Cap plate 7 Laminated rubber body 8 Upper structure 9 Lower structure 11 (11A, 11B) Headed stud 13 Structure 21 Laminated rubber body bonding member 21a Inner peripheral surface Side cylindrical steel material 21b Cylindrical rubber 21d Cylindrical rubber 21e Outer peripheral surface side cylindrical steel material 22 Mounting bolt (hexagon bolt)
22a Head 23 Washer 24 Collar 31 Laminated rubber body joint member 31a Inner circumferential surface side cylindrical steel 31b Cylindrical rubber 31d Cylindrical rubber 31e Outer circumferential surface side cylindrical steel 32 Mounting bolt (hexagon socket set screw)
32a Male thread 35 Mounting bolt (Hexagon socket set screw)
35a Male thread part 36 Lifting prevention stopper 36a Female thread part 42 Mounting bolt (hexagon socket head cap screw)
42a Head 43 Lifting prevention stopper 43a Main body 43b Flange

Claims (9)

A laminated rubber body formed by joining a flange plate to each of the upper and lower end surfaces of a laminated rubber portion in which elastic layers and reinforcing plates made of a rubber material are alternately laminated is connected to the upper structure body and / or via the flange plate. A laminated rubber body joining member joined to a lower structure while allowing the laminated rubber body to float.
One side is joined to the flange plate so as to follow the vertical separation of the upper flange plate and / or the lower flange plate by shear deformation, and the other side is fixed to the upper structure and / or the lower structure. A laminated rubber body joining member comprising an elastic member fixedly fixed to the upper anchor plate or / and the lower anchor plate.   The elastic member is a shear cylindrical rubber body, and is inserted into a mounting bolt hole formed in the upper or / and lower flange plate, and an outer peripheral surface side that is one side of the shear cylindrical rubber body is The inner peripheral surface side that is joined to the flange plate and that is the other side of the shear-shaped cylindrical rubber body is on the upper or / and lower anchor plate side via a mounting bolt that passes through the shear-shaped cylindrical rubber body The bonded member for laminated rubber body according to claim 1, wherein the bonded member is fixed to the fixed member.   The sheared cylindrical rubber body has an inner peripheral surface and an outer peripheral surface made of a cylindrical steel material, and further, at least one cylindrical steel material is disposed between the inner peripheral surface and the outer peripheral surface, and between each cylindrical steel material 3. The laminated rubber body according to claim 2, wherein a cylindrical rubber is arranged, and each of the adjacent cylindrical steel material and cylindrical rubber is in the form of a laminated rubber having a concentric shape in cross-section and bonded to each other by vulcanization. Joining member.   The laminated member for a laminated rubber body according to claim 3, wherein the inner peripheral surface is subjected to female threading that is screwed with the mounting bolt.   The tubular steel material on the inner peripheral surface side of the shear-shaped tubular rubber body has a predetermined direction of the laminated rubber body in a direction in which the upper or / and lower flange plate is separated from the upper or / and lower anchor plate. The end of the tubular steel material on the outer peripheral surface side of the shear-shaped tubular rubber body extending in a direction that secures the floating amount is in the direction away from the upper or / and lower anchor plate. 3. The laminated rubber body joining member according to claim 2, wherein the diameter of the laminated rubber body is increased toward the outer peripheral side so as to engage with the lower flange plate.   A cylindrical member having a height sufficient to secure a predetermined floating amount of the laminated rubber body between the tubular steel material on the inner peripheral surface side of the shear-shaped tubular rubber body and the enormous portion of the mounting bolt. The end of the tubular steel material on the outer peripheral surface side of the shear-shaped tubular rubber body in the direction away from the upper or / and lower anchor plate is related to the upper or / and lower flange plate. The joint member for laminated rubber bodies according to claim 2, wherein the diameter is expanded toward the outer peripheral side so as to fit together.   7. The stopper according to claim 1, wherein a stopper for restricting deformation of the sheared cylindrical rubber body is disposed between the sheared cylindrical rubber body and the mounting bolt. 8. Bonding member for laminated rubber bodies.   A laminated rubber body comprising the joining member for laminated rubber bodies according to any one of claims 1 to 7.   A structure which is supported by the laminated rubber body according to claim 8.

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