JP2005163281A - Attaching structure of laminated rubber base-isolated support device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attaching structure of a laminated rubber base-isolated support device capable of using even for a structure with a large aspect ratio and inexpensively constituting in a simple structure. <P>SOLUTION: The attaching structure 4 for attaching a laminated rubber base-isolated support device 1 to a foundation 2 is provided with an attaching plate 8 fixed through a bolt 7 at the inside of the circular external edge 6 of the lower end face 5 to the lower end face 5 of the vibration base-isolated support device 1 and an attaching plate 12 fixedly attached to the attaching plate 8 through a bolt 11 and fixedly attached through an anchor bolt 10 to the attaching face 9 of the foundation 2, facing the lower end face 5 of the base-isolated support device 1, in the inner side than the outer edge 6 of the lower end face 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mounting structure for mounting a laminated rubber seismic isolation device for base-isolating and supporting a structure to a foundation or a structure.

Japanese Patent Laid-Open No. 10-306616 Japanese Patent Laid-Open No. 10-317715 JP-A-11-153191 JP-A-11-182091 JP 2001-98790 A JP 2001-124142 A

  The laminated rubber seismic isolation device, in which the viscoelastic layer and the rigid layer are alternately laminated by vulcanizing and bonding, is interposed between the foundation and the structure and is structured against the vibration of the foundation caused by earthquakes, etc. Isolates the vibration of objects and prevents damage to structures.

  The laminated rubber seismic isolation device can support the structure as a result of being rigid against the vertical load of the structure and elastic against the horizontal vibration of the foundation due to earthquakes, etc. The seismic isolation effect can be demonstrated as described above, but it uses laminated rubber made by vulcanizing and bonding the viscoelastic layer and the rigid layer to each other. I don't have it.

  By the way, seismic isolation devices are also used in high-rise buildings that are built more and more in recent years, but when the aspect ratio (tower-like ratio) of high-rise buildings increases, vibrations of high-rise buildings due to earthquakes, winds, etc. In the case of rolling, a large vertical tensile force may act on the seismic isolation bearing device, and if a laminated rubber seismic isolation device is used for a high-rise building that generates such a large vertical tensile force, There is a possibility that the laminated rubber may be damaged, or internal defects such as voids may be generated in the viscoelastic layer, resulting in failure to obtain the seismic isolation function.

  The techniques described in Patent Documents 1 to 6 have been proposed in order to solve the above-mentioned problems, but none of them is so satisfactory as an attachment structure because the structure is complicated and the cost is increased.

  The present invention has been made in view of the above-mentioned points, and the object of the present invention is to prevent a large vertical pulling force from acting on the laminated rubber seismic isolation device, and a large vertical pulling force. This eliminates the risk of damage to the laminated rubber seismic isolation device due to the structure. Therefore, the laminated rubber seismic isolation device can be used for structures with a large aspect ratio, and the structure is simple and inexpensive. Another object of the present invention is to provide a mounting structure for a laminated rubber seismic isolation device that can be configured as follows.

  The mounting structure of the laminated rubber seismic isolation device according to the first aspect of the present invention for attaching the laminated rubber seismic isolation device to the foundation or structure is the one fixed to one end surface of the laminated rubber seismic isolation device. The laminated rubber seismic isolation bearing is fixed to one mounting plate on the outer side of the outer edge of one end face of the mounting plate and the laminated rubber seismic isolation device, and on the inner side of the part fixed to the one mounting plate. And the other mounting plate fixed to the mounting surface of the foundation or structure facing one end surface of the apparatus.

  According to the mounting structure of the first aspect, the other mounting plate that is fixed to one mounting plate outside the outer edge of one end surface of the laminated rubber seismic isolation device is fixed to one mounting plate. As a result of being fixed to the foundation or structure mounting surface facing one end surface of the laminated rubber seismic isolation device on the inner side of the part, both mountings are required when the structure is lifted away from the foundation with a large force. Since the mutual fixing part of the plate can move upward, the bending rigidity of the mounting plate can be used, and the fixing part on one end surface of the laminated rubber seismic isolation device on one mounting plate and the other mounting plate It is easy to deform at least one of the portion between the fixing portion and the portion between the fixing portion of the other mounting plate to the mounting surface of the foundation or the structure and the fixing portion to one mounting plate. Can be produced, and this Depending on the shape, it is possible to prevent a large vertical tensile force from acting on the laminated rubber seismic isolation device, and to prevent the large vertical tensile force from acting on the laminated rubber seismic isolation device with a superimposed mounting plate. As a result, the structure is simple and can be constructed at low cost.

  Although the mounting structure of the present invention can be configured with two stacked mounting plates, it may be configured by stacking three or more mounting plates, and one end surface of the laminated rubber seismic isolation bearing device may be formed. For example, when the mounting structure of the present invention is applied for mounting on a foundation, the mounting structure of the present invention may be applied to mount the other end face of the laminated rubber seismic isolation bearing device to a structure, and vice versa. When the mounting structure of the present invention is applied to attach one end surface of a laminated rubber seismic isolation device to a structure, for example, the other end surface of the laminated rubber seismic isolation device can also be attached to the foundation. A mounting structure may be applied.

  Even if one of the mounting plates is fixed to one end surface of the laminated rubber seismic isolation device via a bolt as in the mounting structure of the second aspect of the present invention, the present invention can be used together with or instead of this. As in the mounting structure of the third aspect of the present invention, it may be fixed by being vulcanized and bonded to one end face of the laminated rubber seismic isolation bearing device. One mounting plate is fixed to one end surface of the laminated rubber seismic isolation device inside the outer edge of one end surface of the laminated rubber seismic isolation device as in the mounting structure of the fourth aspect of the present invention. When a tensile force in the laminating direction of a certain level or more is applied to the laminated rubber seismic isolation device as in the mounting structure of the fifth aspect of the present invention, one end surface and the other of the laminated rubber seismic isolation device It is good to have rigidity which produces a deformation | transformation in the site | part except each adhering part to the other mounting plate, and leaves | separates from the other mounting plate.

  The other mounting plate may be fixed to the mounting surface of the foundation or structure via an anchor bolt as in the mounting structure of the sixth aspect of the present invention, and the mounting structure of the seventh aspect of the present invention. Thus, it is preferable that the laminated rubber seismic isolation device is fixed to the mounting surface of the foundation or structure inside the outer edge of one end face. When the other mounting plate is subjected to a tensile force in the stacking direction of a certain level or more in the laminated rubber seismic isolation device as in the mounting structure according to the eighth aspect of the present invention, the mounting plate or structure is attached. It is good to have the rigidity which produces a deformation | transformation in the site | part except each fixed part to a surface and one attachment plate, and separates from the attachment surface of a foundation or a structure.

  The deformation of both mounting plates is preferably elastic deformation, but there may be some plastic deformation, and the rigidity in the stacking direction of both mounting plates may be the same or different from each other.

  In a preferred example, the laminated rubber seismic isolation device has a laminated rubber in which a viscoelastic layer and a rigid layer are vulcanized and bonded to each other like the attachment structure of the ninth aspect of the present invention. In another preferable example, as in the mounting structure of the tenth aspect of the present invention, the viscoelastic layer and the rigid layer are vulcanized and bonded to each other and alternately stacked, and at least one circle extending in the stacking direction. It has a laminated rubber having a columnar hollow part and a lead plug filled in the hollow part of this laminated rubber. In these embodiments, one mounting plate is the eleventh aspect of the present invention. Even if it is fixed to one end face of the laminated rubber seismic isolation device via a bolt that is screwed to a rigid layer on one end face of the laminated rubber, preferably a thick rigid layer, as in the mounting structure of Viscoelasticity of one end face of laminated rubber like the mounting structure of the twelfth aspect It may be fixed to one end surface of the laminated rubber seismic isolation bearings device through vulcanization adhesion to.

  The laminated rubber seismic isolation device is fixed to the mounting surface of the structure or the foundation via another mounting plate fixed to the other end surface as in the mounting structure of the thirteenth aspect of the present invention. The other mounting plate is preferably fixed to the other end surface of the laminated rubber seismic isolation device through bolts or vulcanized adhesive as in the mounting structure of the fourteenth aspect of the present invention. In the case where the laminated rubber seismic isolation device has laminated rubber formed by alternately vulcanizing and bonding viscoelastic layers and rigid layers to each other as in the mounting structure of the ninth or tenth aspect The other mounting plate may be fixed to the other end face of the laminated rubber seismic isolation device via a bolt screwed to the rigid layer on the other end face of the laminated rubber, preferably a thick rigid layer. The other end face of the laminated rubber seismic isolation device through vulcanization adhesion to the viscoelastic layer of the other end face of the laminated rubber It may be fixed.

  According to the present invention, it is possible to prevent a large vertical tensile force from acting on the laminated rubber seismic isolation device, and to eliminate the possibility of damaging the laminated rubber seismic isolation device due to the large vertical tensile force, Thus, it is possible to use a laminated rubber seismic isolation device for structures having a large aspect ratio, and to provide a mounting structure for a laminated rubber seismic bearing device that is simple in structure and can be constructed at low cost. Can do.

  The invention will now be described in more detail with reference to the preferred embodiment examples shown in the drawings. The present invention is not limited to these examples.

  1 and 2, the mounting structure 4 of this example for mounting the laminated rubber seismic isolation device 1 to the foundation 2 or the structure 3, for example, the foundation 2, includes one end face of the laminated rubber seismic isolation device 1, In the example, one mounting plate 8 fixed to the lower end surface 5 via a plurality of bolts 7 inside the annular outer edge 6 of the lower end surface 5 and the outer edge 6 of the lower end surface 5 of the laminated rubber seismic isolation device 1. Further, the outer edge 6 of the lower end surface 5 is fixed to the mounting plate 8 on the outer side through a plurality of bolts 11 and is further on the inner side than the portion fixed to the mounting plate 8 (the screwed portion by the plurality of bolts 11). Further, the other mounting plate 12 fixed to the mounting surface 9 of the foundation 2 facing the lower end surface 5 of the laminated rubber seismic isolation bearing device 1 via a plurality of anchor bolts 10 is provided.

  The laminated rubber seismic isolation device 1 that receives the vertical load of the structure 3 made of a high-rise building having a large aspect ratio and supports the structure 3 includes a plurality of viscoelastic layers 21 made of rubber, damping rubber, and the like. A plurality of rigid layers 22 made of steel plates and the like have laminated rubbers 23 alternately laminated by vulcanization bonding, and the rigid layers 22 are made of thick steel plates disposed on the lower end surface 5 side. A rigid layer 25, a rigid layer 27 made of a thick steel plate disposed on the upper end surface 26 side which is the other end surface, and a rigidity made of a plurality of thin steel plates arranged between the rigid layer 25 and the rigid layer 27 In such a laminated rubber seismic isolation device 1, the mounting plate 8 is laminated rubber-free through a bolt 7 screwed to the rigid layer 25 on the lower end surface 5, which is also one end surface of the laminated rubber 23. The seismic bearing device 1 is fixed to the lower end surface 5.

  The mounting plate 8 and the mounting plate 12 each made of a steel plate are overlapped with each other, and the anchor bolt 10 is embedded in the foundation 2.

  The laminated rubber seismic isolation bearing device 1 is fixed to the lower surface 32 of the structure 3 through still another mounting plate 31 fixed to the upper end surface 26 which is the other end surface, and is embedded in the structure 3. The mounting plate 31 made of a steel plate fixed to the structure 3 via a plurality of stud bolts 33 is connected to the laminated rubber seismic isolation device 1 via a plurality of bolts 34 in this example via bolts or vulcanization adhesion. Fixed to the upper end surface 26, more specifically, fixed to the upper end surface 26 of the laminated rubber seismic isolation device 1 via a plurality of bolts 34 screwed to the rigid layer 27 on the upper end surface 26 side of the laminated rubber 23. Yes.

  In the mounting structure 4 described above, when an earthquake occurs and the foundation 2 vibrates in the horizontal direction H, the vibration of the foundation 2 is transmitted to the laminated rubber 23, and the laminated rubber 23 passes through the viscoelastic layer 21. The structure 3 is sheared and deformed in the horizontal direction H, and the structure 3 is isolated and supported regardless of the vibration in the horizontal direction H of the foundation 2.

  By the way, the structure 3 vibrates in the horizontal direction H due to a large earthquake or wind, and the structure 3 is lifted from the foundation 2 due to the locking of the structure 3, so that the structure 3 rises above the laminated rubber 23 of the laminated rubber seismic isolation device 1. When the tensile force in the stacking direction is applied, as shown in FIG. 3, the mounting plate 8 is fixed to the lower end surface 5 of the laminated rubber 23 and the mounting plate 12 (parts of bolts 7 and 11). While the annular portion 35 is deformed to be separated from the mounting plate 12, the mounting plate 12 is also fixed to the mounting surface 9 of the base 2 and the mounting plate 8 (the portions of the anchor bolt 10 and the bolt 11). The annular portion 36 except for) is deformed so as to be separated from the mounting surface 9 of the foundation 2 so that a tensile force in a laminating direction of a certain level or more is not applied to the laminated rubber 23 of the laminated rubber seismic isolation device 1. .

  As described above, the mounting plate 8 is applied to the lower end surface 5 and the mounting plate 12 of the laminated rubber seismic isolation device 1 when a tensile force in the laminating direction of a certain level or more is applied to the laminated rubber seismic isolation device 1. The portion 35 excluding the fixed portion is deformed so as to be separated from the mounting plate 12, and the mounting plate 12 also has a tensile force in the stacking direction of a certain level or more on the laminated rubber seismic isolation device 1. When adding, it has the rigidity which produces a deformation | transformation in the part 36 except each attachment surface 9 of the foundation 2, and each adhering part to the attachment board 8, and leaves | separates from the attachment surface 9 of the foundation 2. FIG.

  According to the mounting structure 4 described above, the mounting plate 12 fixed to the mounting plate 8 on the outer side of the outer edge 6 of the lower end surface 5 of the laminated rubber seismic isolation device 1 is more than the portion fixed to the mounting plate 8. As a result of being fixed to the mounting surface 9 of the foundation 2 facing the lower end surface 5 of the laminated rubber seismic isolation device 1 on the inside, both mounting plates are used when the structure 3 is lifted away from the foundation 2 with a large force. Since the mutual fixing portions of 8 and 12 can move upward, the bending rigidity of the mounting plates 8 and 12 can be used, and the fixing portion to the lower end surface 5 of the laminated rubber 23 in the mounting plate 8 and the mounting plate 12 can be used. The portion 35 between the fixing portion and the portion 36 between the fixing portion of the mounting plate 12 to the mounting surface 9 of the foundation 2 and the fixing portion to the mounting plate 8 can be easily deformed. Due to this deformation, a large vertical pull is applied to the laminated rubber 23. As a result, it is possible to prevent a large vertical tensile force from being exerted on the laminated rubber 23 by the superimposed mounting plates 8 and 12. As a result, the structure is simple and the structure is inexpensive. obtain.

  By the way, the laminated rubber seismic isolation device 1 may be a laminated rubber seismic isolation device 1 as shown in FIG. 4, and the laminated rubber seismic isolation device 1 includes a plurality of viscoelastic layers made of rubber, damping rubber, or the like. 21 and a plurality of rigid layers 22 made of steel plates or the like are alternately laminated by vulcanization bonding, and a laminated rubber 23 having a cylindrical hollow portion 41 extending in the laminating direction, and a hollow of the laminated rubber 23 And the horizontal vibration H of the structure 3 caused by an earthquake, a wind, etc. by using the laminated rubber seismic isolation device 1 having the lead plug 42. Can be attenuated as quickly as possible.

  As shown in FIG. 4, the mounting structure 4 may further include a mounting plate 51 in addition to the mounting plate 12. In this case, the mounting plate 51 includes a plurality of bolts screwed to the mounting plate 51. The base 2 is fixed to the mounting plate 12 on the inner side of the outer edge 6 of the lower end surface 5 of the laminated rubber seismic isolation device 1 via 52, while facing the lower end surface 5 of the laminated rubber seismic isolation device 1. It is fixed to the surface 9 via a plurality of anchor bolts 10 on the outer side of the outer edge 6 of the lower end surface 5, and thus the mounting plate on the outer side of the outer edge 6 of the lower end surface 5 of the laminated rubber seismic isolation device 1. The mounting plate 12 fixed to the base plate 8 with bolts 11 is attached to the mounting surface 9 of the foundation 2 facing the lower end surface 5 of the laminated rubber seismic isolation device 1 inside the portion fixed to the mounting plate 8. It is fixed via the bolt 52 and the mounting plate 51.

  As shown in FIG. 4, in addition to the mounting plate 12, the mounting structure 4 further includes a mounting plate 51 superimposed on the mounting plate 12. When a force is to be applied, in addition to the deformation of the mounting plates 8 and 12, the same deformation of the mounting plate 51 can be obtained, and as a result, the action of a large vertical tensile force on the laminated rubber 23 can be ensured. Can be prevented.

  When the lower end surface 5 side of the laminated rubber 23 is composed of the viscoelastic layer 21 instead of the rigid layer 22, the mounting plate 8 is provided with the laminated rubber seismic isolation bearing device 1 through vulcanization adhesion to the viscoelastic layer 21. The bottom plate 5 may be bonded by vulcanization and fixed, and the mounting plate 31 is the same, and when the upper end surface 26 side of the laminated rubber 23 is composed of the viscoelastic layer 21 instead of the rigid layer 22, It may be fixed by being vulcanized and bonded to the upper end surface 26 of the laminated rubber seismic isolation device 1 through vulcanized adhesion to the viscoelastic layer 21.

  In the above example, the mounting structure 4 is interposed between the base 2 and the laminated rubber seismic isolation device 1, but instead of or together with this, the structure 3 and the laminated rubber seismic isolation device 1 are interposed. Further, in the above description, the laminated rubber seismic isolation device 1 and the mounting plates 8, 12, 31 and 51 are each formed in a columnar shape and a disc shape. However, the present invention is not limited to these, and a prismatic shape and a square plate shape. You may comprise in a shape (a square and a polygon are included).

It is sectional drawing of an example of preferable embodiment of this invention. It is II-II arrow sectional view explanatory drawing shown in FIG. It is operation | movement explanatory drawing of the example shown in FIG. It is sectional drawing of the other example of preferable embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Laminated rubber seismic isolation device 2 Foundation 3 Structure 4 Mounting structure 5 Lower end surface 6 Outer edge 7 Bolt 8 Mounting plate 9 Mounting surface 10 Anchor bolt 11 Bolt 12 Mounting plate

Claims (15)

  An attachment structure for attaching a laminated rubber seismic isolation device to a foundation or a structure, wherein one mounting plate fixed to one end surface of the laminated rubber seismic isolation device and one of the laminated rubber seismic isolation devices The foundation or structure of the foundation or structure facing one end surface of the laminated rubber seismic isolation device is fixed to one mounting plate outside the outer edge of the end surface and inside the portion fixed to the one mounting plate. A structure for mounting a laminated rubber seismic isolation device including the other mounting plate fixed to the mounting surface.   The mounting structure of the laminated rubber seismic isolation device according to claim 1, wherein the one mounting plate is fixed to one end surface of the laminated rubber seismic isolation device via a bolt.   The mounting structure of a laminated rubber seismic isolation device according to claim 1 or 2, wherein the one mounting plate is vulcanized and bonded to one end face of the laminated rubber seismic isolation device.   The one mounting plate is fixed to one end surface of the laminated rubber seismic isolation device inside the outer edge of one end surface of the laminated rubber seismic isolation device. Mounting structure for laminated rubber seismic isolation device.   One mounting plate is fixed to one end surface of the laminated rubber seismic isolation device and the other mounting plate when a tensile force in the laminating direction of a certain level or more is applied to the laminated rubber seismic isolation device. The mounting structure of the laminated rubber seismic isolation device according to any one of claims 1 to 4, wherein the structure has a rigidity that causes deformation at a portion excluding the portion and separates from the other mounting plate.   The mounting structure for a laminated rubber seismic isolation device according to any one of claims 1 to 5, wherein the other mounting plate is fixed to a mounting surface of a foundation or a structure via an anchor bolt.   7. The laminated rubber seismic isolation according to claim 1, wherein the other mounting plate is fixed to the mounting surface of the foundation or the structure inside the outer edge of one end face of the laminated rubber seismic isolation device. Mounting structure for the bearing device.   The other mounting plate is a part excluding the mounting surface of the foundation or structure and the respective fixing part to one mounting plate when a certain level of tensile force in the stacking direction is to be applied to the laminated rubber seismic isolation device The structure for mounting a laminated rubber seismic isolation device according to any one of claims 1 to 7, wherein the structure has a rigidity that causes deformation at a distance from the mounting surface of the foundation or structure.   The laminated rubber seismic isolation device has a laminated rubber in which a viscoelastic layer and a rigid layer are laminated by alternately vulcanizing and bonding to each other, and the laminated rubber according to any one of claims 1 to 8. Mounting structure for seismic isolation bearing device.   The laminated rubber seismic isolation device includes a laminated rubber having at least one cylindrical hollow portion in which a viscoelastic layer and a rigid layer are alternately laminated by vulcanization bonding and extended in the laminating direction. The mounting structure of the laminated rubber seismic isolation device according to any one of claims 1 to 8, further comprising a lead plug filled in a hollow portion of the laminated rubber.   11. The laminated rubber immunity according to claim 9 or 10, wherein one mounting plate is fixed to one end surface of the laminated rubber seismic isolation device via a bolt screwed to a rigid layer on one end surface of the laminated rubber. Seismic support device mounting structure.   The one mounting plate is fixed to one end surface of the laminated rubber seismic isolation device through vulcanization adhesion to the viscoelastic layer of one end surface of the laminated rubber. Mounting structure of the described laminated rubber seismic isolation device.   The laminated rubber seismic isolation device is fixed to a structural or foundation mounting surface via another mounting plate fixed to the other end surface. Mounting structure of rubber seismic isolation device.   The mounting structure of a laminated rubber seismic isolation device according to claim 13, wherein the other mounting plate is fixed to the other end surface of the laminated rubber seismic isolation device via bolts or vulcanization adhesion.   A laminated rubber seismic isolation device for use in the mounting structure of the laminated rubber seismic isolation device according to any one of claims 1 to 14.

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