JP4631275B2 - Laminated rubber seismic isolation device mounting structure - Google Patents

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.

In 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, the mounting is fixed to one end face of the laminated rubber seismic isolation device. The plate is fixed in the horizontal direction through a plurality of bolts fixed to the foundation or structure on the mounting surface of the foundation or structure outside the fixed portion to one end face of the laminated rubber seismic isolation device. Each through hole of the mounting plate that is stopped and through which each bolt passes is used to mount the foundation or structure of the mounting plate with a bolt when a certain level of tensile force is applied to the laminated rubber seismic isolation device. The locking portion to the surface is a long hole extending in the radial direction so that it can move in the radial direction around the central portion of one end surface of the laminated rubber seismic isolation device.

  According to the mounting structure of the first aspect, each bolt that locks the mounting plate fixed to one end surface of the laminated rubber seismic isolation device to the mounting surface of the foundation or the structure in the horizontal direction passes therethrough. Each through-hole is connected to the base of the mounting plate by bolts or the locking part to the mounting surface of the structure so that it can move in the radial direction around the center of one end surface of the laminated rubber seismic isolation device. As a result of the long holes extending in the direction, when the structure is lifted away from the foundation with a large force, it is attached together with the radial movement of the locking part to the foundation of the mounting plate or the mounting surface of the structure A deformation can be caused in a portion between the fixed portion to one end surface of the laminated rubber seismic isolation device of the plate and the locking portion to the base of the mounting plate or the mounting surface of the structure; Due to this deformation, a large vertical tension is applied to the laminated rubber seismic isolation device. There can be prevented from acting, moreover, a large vertical pulling force of the laminated rubber seismic isolation bearings device action results that can prevent with the mounting plate to be inexpensively constructed a structure is simple.

  When the mounting structure of the present invention is applied to, for example, one end face of a laminated rubber seismic isolation device to a foundation, the attachment of the present invention is also used to attach the other end face of the laminated rubber seismic isolation device to a structure. The structure may be applied, and conversely, when the mounting structure of the present invention is applied to attach one end surface of the laminated rubber seismic isolation device to a structure, for example, the other end of the laminated rubber seismic isolation device The mounting structure of the present invention may also be applied for mounting on the end face.

  In the present invention, as in the mounting structure of the second aspect, the bolt has a huge head, and the mounting plate around each through-hole is formed between the huge part of the bolt and the mounting surface of the foundation or structure. Even if it is slidably interposed between the enormous part of the bolt and the mounting surface of the foundation or structure, a nut is screwed onto the bolt as in the mounting structure of the third aspect. The mounting plate around each through hole is slidably interposed between the nut and the mounting surface of the foundation or structure between the nut and the mounting surface of the foundation or structure. May be.

  The mounting plate preferably has a plurality of bolts on the mounting surface of the foundation or structure outside 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. It is locked immovably in the horizontal direction.

  Even if the mounting plate is fixed to one end face of the laminated rubber seismic isolation device via other bolts as in the mounting structure of the fifth aspect of the present invention, the present invention can be used together with or instead of this. As in the mounting structure of the sixth aspect of the present invention, it may be fixed by being vulcanized and bonded to one end surface of the laminated rubber seismic isolation device. The 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 seventh aspect of the present invention. As in the mounting structure of the eighth aspect of the invention, when a tensile force in the laminating direction of a certain level or more is applied to the laminated rubber seismic isolation device, at least one end surface of the laminated rubber seismic isolation device is applied. It is desirable that the portion excluding the fixed portion is deformed and has rigidity so as to be separated from the mounting surface of the foundation or the structure. The deformation of the mounting plate is preferably elastic deformation, but there is some plastic deformation. May be.

  Each through-hole formed of a long hole is opened at the outer edge of the closing plate or the mounting plate before reaching the outer edge of the mounting plate in the radial direction as in the mounting structure of the ninth aspect of the present invention.

  In a preferred example, the laminated rubber seismic isolation device has a laminated rubber in which viscoelastic layers and rigid layers are alternately laminated by vulcanization bonding to each other as in the mounting structure of the tenth aspect of the present invention. In another preferred example, as in the mounting structure of the eleventh aspect of the present invention, the viscoelastic layer and the rigid layer are vulcanized and bonded to each other and laminated alternately and at least one extending in the laminating direction. The laminated rubber has a cylindrical hollow portion, and a lead plug filled in the hollow portion of the laminated rubber.

  The laminated rubber seismic isolation device is fixed to the mounting surface of the structure or foundation via another mounting plate fixed to the other end surface like the mounting structure of the twelfth aspect of the present invention. The other mounting plate is preferably fixed to the other end face of the laminated rubber seismic isolation device through bolts or vulcanized adhesive as in the mounting structure of the thirteenth aspect of the present invention. Thus, the laminated rubber seismic isolation device has laminated rubber formed by alternately laminating the viscoelastic layer and the rigid layer by vulcanization bonding like the mounting structure of the tenth or eleventh aspect. In this case, the other mounting plate is 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. Also, the other end 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 to.

  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 to 3, in 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, one end face of the laminated rubber seismic isolation device 1, In the example, the mounting plate 8 fixed to the lower end surface 5 via a plurality of bolts 7 on the inner side of the annular outer edge 6 of the lower end surface 5 is fixed to the lower end surface 5 of the laminated rubber seismic isolation device 1. A plurality of bolts fixed to the mounting surface 9 of the foundation 2 outside the outer edge 6 and outside the outer edge 6, in this example with respect to the horizontal direction H via the anchor bolts 10. Each of the through holes 11 of the mounting plate 8 that is fixedly locked and through which each anchor bolt 10 passes is fixed to the laminated rubber seismic isolation device 1 when a certain level of tensile force in the direction of lamination is applied. To the mounting surface 9 of the foundation 2 of the mounting plate 8 Each locking portion (part of the mounting plate 8 around the anchor bolt 10) can move in the radial direction R so that it can move in the radial direction R around the center of the lower end surface 5 of the laminated rubber seismic isolation device 1. It is a long hole that extends.

  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 is composed of a plurality of annular viscoelastic materials made of rubber, high-damping rubber, or the like. A laminated rubber 24 having a cylindrical hollow portion 23 in which a layer 21 and a plurality of annular rigid layers 22 made of a steel plate or the like are alternately laminated by vulcanization bonding and extended in the laminating direction, and a laminated rubber The rigid layer 22 includes a rigid layer 26 made of an annular thick steel plate disposed on the lower end surface 5 side, and the other end surface. A rigid layer 28 made of an annular thick steel plate disposed on the end face 27 side, and a rigid layer 29 made of a plurality of annular thin steel plates disposed between the rigid layer 26 and the rigid layer 28. In the laminated rubber seismic isolation device 1, the mounting plate 8 is laminated It is fixed to the lower end surface 5 of the laminated rubber seismic isolation bearings apparatus 1 via a bolt 7 which is screwed into the rigid layer 26 of the lower end surface 5 which is also the one end face of the 24.

  The laminated rubber seismic isolation bearing device 1 is fixed to the lower surface 32 of the structure 3 via still another mounting plate 31 fixed to the upper end surface 27 which is the other end surface, and is embedded in the structure 3. A mounting plate 31 made of a disk-shaped steel plate fixed to the structure 3 via a plurality of stud bolts 33 is laminated rubber-isolated bearings via a plurality of bolts 34 in this example via bolts or vulcanization adhesion. It is fixed to the upper end surface 27 of the laminated rubber seismic isolation device 1 via a plurality of bolts 34 fixed to the upper end surface 27 of the device 1 and more specifically, a plurality of bolts 34 screwed to the rigid layer 28 on the upper end surface 27 side of the laminated rubber 24. It is fixed.

  Each through-hole 11 made of a long hole in the disc-shaped mounting plate 8 is closed before reaching the outer edge 35 of the mounting plate 8 in the radial direction R, and each of the anchor bolts 10 embedded in the foundation 2 has a closed hole. A nut 36 is screwed, and the mounting plate 8 around each through hole 11 slides between the nut 36 and the mounting surface 9 of the foundation 2 with respect to the nut 36 and the mounting surface 9 of the foundation 2. Intervene freely.

  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 24, and the laminated rubber 24 passes through the viscoelastic layer 21. The structure 3 is sheared and deformed in the horizontal direction H to isolate and support the structure 3 regardless of the vibration of the foundation 2 in the horizontal direction H, and the vibration of the structure 3 in the horizontal direction H is quickly damped by the plastic deformation of the lead plug 25. Let

  By the way, the structure 3 vibrates in the horizontal direction H due to a large earthquake or wind, and the structure 3 rises from the foundation 2 due to the locking of the structure 3, and the laminated rubber 24 of the laminated rubber seismic isolation device 1 exceeds a certain level. When the tensile force in the stacking direction is applied, the mounting plate 8 moves in the radial direction R of the locking portion (portion around the anchor bolt 10) to the mounting surface 9 of the foundation 2 as shown in FIG. As a result of the movement, the annular rubber member 37 is deformed at the annular portion 37 excluding the fixing portion (the portion of the bolt 7) to the lower end surface 5 of the laminated rubber 24 and the engaging portion (the portion around the anchor bolt 10) to the mounting surface 9 of the foundation 2. It is generated and 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 24 of the laminated rubber seismic isolation device 1.

  As described above, the mounting plate 8 is fixed to the lower end surface 5 of the laminated rubber seismic isolation device 1 and the foundation 2 when a tensile force in the laminating direction of a certain level or more is applied to the laminated rubber seismic isolation device 1. It has the rigidity which produces a deformation | transformation in the part 37 except the latching | locking part to the attachment surface 9, and leaves | separates from the attachment surface 9 of the foundation 2. FIG.

According to the mounting structure 4 described above, the mounting plate 8 fixed to the lower end surface 5 of the laminated rubber seismic isolation device 1 when a certain level of tensile force in the laminating direction is applied to the laminated rubber seismic isolation device 1. The through holes 11 through which the anchor bolts 10 that are immovably locked with respect to the mounting surface 9 of the foundation 2 in the horizontal direction H penetrate the anchor holes 10 to the mounting surface 9 of the foundation 2 of the mounting plate 8 by the anchor bolts 10. If it is a long hole extending in the radial direction R so that it can move in the radial direction R centering on the central portion of the lower end surface 5 of the laminated rubber seismic isolation device 1, a mounting plate around each through-hole 11 8 is interposed between the nut 36 and the mounting surface 9 of the foundation 2 so as to be slidable relative to the nut 36 and the mounting surface 9 of the foundation 2. laminated rubber as wax in Ukiaga as structure 3 is separated from the basic 2 When the seismic isolation bearing device 1 Ru added tensile force above a certain level in the stacking direction, the mounting plate with the movement of the radial direction R of the engaging portion of the mounting surface 9 of the basic second mounting plate 8 (slide) It is possible to cause deformation in the portion 37 between the fixed portion of the laminated rubber seismic isolation bearing device 8 to the lower end surface 5 and the engaging portion of the mounting plate 8 to the mounting surface 9 of the foundation 2. Thus, it is possible to prevent a large vertical tensile force from acting on the laminated rubber seismic isolation device 1 due to this deformation, and to prevent the large vertical tensile force from acting on the laminated rubber seismic isolation device 1. As a result, the structure can be simplified and inexpensively constructed.

  By the way, the laminated rubber seismic isolation device 1 as shown in FIG. 5 may be used as the laminated rubber seismic isolation device 1 using the mounting structure 4, and the laminated rubber seismic isolation device 1 does not have the lead plug 25. Cylindrical laminated rubber in which a plurality of disk-like viscoelastic layers 21 made of rubber, high-damping rubber and the like and a plurality of disk-like rigid layers 22 made of steel plate or the like are alternately laminated by vulcanization bonding to each other The rigid layer 22 includes a rigid layer 26 made of a disk-shaped thick steel plate disposed on the lower end surface 5 side, and a disk-shaped thickness disposed on the upper end surface 27 side which is the other end surface. It consists of a rigid layer 28 made of a thick steel plate and a rigid layer 29 made of a plurality of disc-shaped thin steel plates disposed between the rigid layer 26 and the rigid layer 28.

  Further, as shown in FIGS. 5 and 6, the mounting structure 4 may be embodied by using a mounting plate 8 having a plurality of through holes 11 each having a long hole opened at the outer edge 35 in the radial direction R. Well, the mounting structure 4 is embodied by using the mounting plate 8 in which the through hole 11 made of a long hole opened at the outer edge 35 and the through hole 11 made of a long hole closed by the outer edge 35 are mixed. Also good.

  Further, in the above, the mounting plate 8 around the through hole 11 is interposed between the nut 36 and the mounting surface 9 of the foundation 2 so as to be slidable with respect to the nut 36 and the mounting surface 9 of the foundation 2. Instead, the mounting plate 8 around each through-hole 11 is connected between the mounting portion 9 of the bolt 10 and the mounting surface 9 of the foundation 2 by using the bolt 10 having a huge head. And the mounting surface 9 of the foundation 2 may be slidably interposed.

  When the lower end surface 5 side of the laminated rubber 24 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 device 1 through vulcanization adhesion to the viscoelastic layer 21. The bottom plate 5 may be vulcanized and bonded to the lower end surface 5, and the mounting plate 31 is the same, and when the upper end surface 27 side of the laminated rubber 24 is composed of the viscoelastic layer 21 instead of the rigid layer 22, It may be bonded to the upper end surface 27 of the laminated rubber seismic isolation device 1 via vulcanization adhesion to the viscoelastic layer 21 by vulcanization adhesion.

  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. In addition, in the above, the laminated rubber seismic isolation bearing device 1 and the mounting plates 8 and 31 are each formed in a columnar shape and a disc shape, but the present invention is not limited to these, and a prismatic shape and a square plate shape (a square shape and a square shape). (Including a polygon).

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 a top view of the attachment plate 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. FIG. 6 is a plan view of the mounting plate shown in FIG. 5.

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 Through-hole

Claims (11)

A mounting structure for mounting a laminated rubber seismic isolation device to a foundation or a structure, wherein the mounting plate fixed to one end surface of the laminated rubber seismic isolation device is one of the laminated rubber seismic isolation devices. At least one of the laminated rubber seismic isolation devices that is stationary with respect to the horizontal direction via a plurality of bolts fixed to the foundation or structure mounting surface outside the fixed portion to the end surface and fixed to the foundation or structure. It is locked so that it can be separated from the mounting surface of the foundation or structure at the part excluding the fixed part to the end surface of each, and each through hole of the mounting plate through which each bolt penetrates is more than a certain amount in the laminated rubber seismic isolation device When a tensile force in the stacking direction is applied, each locking part to the base of the mounting plate by bolt or the mounting surface of the structure is a radial direction centered on the center of one end face of the laminated rubber seismic isolation device So that you can move to Has a long hole extending in the radial direction, the bolt has a large head, mounting plate around each through hole, between the mounting surface of the expanded portion and the base or structure of the bolt When the tensile force in the stacking direction exceeds a certain level in the laminated rubber seismic isolation device, the bolt is slidably interposed so as to slide with respect to the enormous part of the bolt and the mounting surface of the foundation or structure. mounting structure of to have laminated rubber seismic isolation bearings device. A mounting structure for mounting a laminated rubber seismic isolation device to a foundation or a structure, wherein the mounting plate fixed to one end surface of the laminated rubber seismic isolation device is one of the laminated rubber seismic isolation devices. At least one of the laminated rubber seismic isolation devices that is stationary with respect to the horizontal direction via a plurality of bolts fixed to the foundation or structure mounting surface outside the fixed portion to the end surface and fixed to the foundation or structure. It is locked so that it can be separated from the mounting surface of the foundation or structure at the part excluding the fixed part to the end surface of each, and each through hole of the mounting plate through which each bolt penetrates is more than a certain amount in the laminated rubber seismic isolation device When a tensile force in the stacking direction is applied, each locking part to the base of the mounting plate by bolt or the mounting surface of the structure is a radial direction centered on the center of one end face of the laminated rubber seismic isolation device So that you can move to Has a long hole extending in the radial direction, the bolt is screwed nut, the mounting plate around each through hole, between the mounting surface of the nut and the base or structure, laminated rubber exemption Laminated rubber seismic isolation that is slidably interposed so as to slide relative to the nut and the mounting surface of the foundation or structure when a certain level of tensile force in the direction of lamination is applied to the seismic bearing device. Mounting structure for the bearing device. Mounting plate, the laminated rubber seismic isolation bearings one claim 1 or 2 is sealed immobile locking in the horizontal direction through a plurality of bolts to the mounting surface of the foundation or structure outside the outer edge of the end face of the device Mounting structure of the described laminated rubber seismic isolation device. The mounting structure for a laminated rubber seismic isolation device according to any one of claims 1 to 3 , wherein the mounting plate is fixed to one end face of the laminated rubber seismic isolation device via another bolt. The mounting structure of the laminated rubber seismic isolation device according to any one of claims 1 to 4 , wherein the mounting plate is vulcanized and bonded to one end face of the laminated rubber seismic isolation device. The laminated plate according to any one of claims 1 to 5 , wherein the mounting plate is fixed to one end surface of the laminated rubber seismic isolation device inside an outer edge of one end surface of the laminated rubber seismic isolation device. Mounting structure of rubber seismic isolation device. The laminated rubber seismic isolation device according to any one of claims 1 to 6 , wherein each through hole made of a long hole is closed or opened at the outer edge of the mounting plate before reaching the outer edge of the mounting plate in the radial direction. Mounting structure. Rubber seismic isolation bearings devices, laminated rubber according to any one of claims 1 in which the viscoelastic layer and the rigid layer has a laminated rubber are stacked alternately bonded by vulcanization to each other 7 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 structure for mounting a laminated rubber seismic isolation device according to any one of claims 1 to 7 , further comprising a lead plug filled in a hollow portion of the laminated rubber. The laminated rubber according to any one of claims 1 to 9 , wherein the laminated rubber seismic isolation device is fixed to the structure or foundation mounting surface via another mounting plate fixed to the other end surface. Mounting structure for seismic isolation bearing device. The mounting structure of a laminated rubber seismic isolation device according to claim 10 , wherein the other mounting plate is fixed to the other end face of the laminated rubber seismic isolation device via bolts or vulcanization adhesion.

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