JP2005171609A - Mounting structure of multi-layer rubber base isolation bearing device - Google Patents

Mounting structure of multi-layer rubber base isolation bearing device Download PDF

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JP2005171609A
JP2005171609A JP2003412434A JP2003412434A JP2005171609A JP 2005171609 A JP2005171609 A JP 2005171609A JP 2003412434 A JP2003412434 A JP 2003412434A JP 2003412434 A JP2003412434 A JP 2003412434A JP 2005171609 A JP2005171609 A JP 2005171609A
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laminated rubber
seismic isolation
mounting
isolation device
rubber seismic
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JP4631275B2 (en
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Ikuo Shimoda
郁夫 下田
Masaki Mochimaru
昌己 持丸
Takahito Nakamura
崇仁 仲村
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Oiles Industry Co Ltd
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Oiles Industry Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a cheap multi-layer rubber base isolation bearing device with a simple structure while the multi-layer rubber base isolation bearing device can be also used for a structure having large aspect ratio. <P>SOLUTION: The multi-layered rubber base isolation bearing device 1 is so constituted that it is mounted to a foundation 2 and, at the same time, a mounting plate 8 fixed to the lower end face 5 thereof through a bolt 7 at the inside of a circular outer edge 6 of the lower end face 5 is immovably interlocked to a mounting surface 9 of the foundation 2 through anchor bolts 10 fixed to the foundation 2 for the horizontal direction H in the outside rather than the outer edge 6 in the outside from the fixed section to the lower end face 5. Each through-hole 11 of the mounting plate 8 through which each anchor bolt 10 passes is a slot extended in the radial direction R so that each interlocking section with the mounting surface of the foundation 2 of the mounting plate 8 by the anchor bolt 10 can be moved in the radial direction R with the central part of the lower end face 5 as the center. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、構造物を免震支持する積層ゴム免震支承装置を基礎又は構造物に取り付けるための取付構造に関する。   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.

特開平１０−３０６６１６号公報Japanese Patent Laid-Open No. 10-306616 特開平１０−３１７７１５号公報Japanese Patent Laid-Open No. 10-317715 特開平１１−１５３１９１号公報JP-A-11-153191 特開平１１−１８２０９１号公報JP-A-11-182091 特開２００１−９８７９０号公報JP 2001-98790 A 特開２００１−１２４１４２号公報JP 2001-124142 A

粘弾性層と剛性層とを互いに加硫接着して交互に積層してなる積層ゴム免震支承装置は、基礎と構造物との間に介装されて地震等による基礎の振動に対して構造物の振動を免震し構造物の損壊を防止する。   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.

積層ゴム免震支承装置は、構造物の鉛直方向の荷重に対しては剛性を示し地震等による基礎の水平方向の振動に対しては弾性を示すようになっている結果、構造物を支持できて上述の通りの免震効果を発揮できるが、粘弾性層と剛性層とを互いに加硫接着してなる積層ゴムを用いるものであるから鉛直方向の引張り力に対してはそれ程大きな抵抗力を有していない。   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.

ところで、近年で益々多く建築される超高層建物にも免震支承装置が用いられているが、超高層建物のアスペクト比（塔状比）が大きくなると、地震、風等による超高層建物の振動、横揺れの際に免震支承装置に大きな鉛直方向の引張り力が作用する場合があり、斯かる大きな鉛直方向の引張り力を生じさせる超高層建物に対して積層ゴム免震支承装置を用いるとその積層ゴムに損壊が生じたり粘弾性層にボイド等の内部欠陥が生じて免震機能が得られなくなる虞がある。   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.

以上の問題点を解決しようとして特許文献１から６に記載の技術が提案されているが、いずれも構造が複雑であってコストアップを招来し取付構造としてそれ程満足し得るものではない。   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.

本発明は、前記諸点に鑑みてなされたものであって、その目的とするところは、積層ゴム免震支承装置へ大きな鉛直方向の引張り力が作用することを防止できて大きな鉛直方向の引張り力に起因する積層ゴム免震支承装置の損壊の虞をなくし得、而して、アスペクト比の大きい構造物にも積層ゴム免震支承装置を用いることができる上に、構造が簡単であって安価に構成し得る積層ゴム免震支承装置の取付構造を提供することにある。   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.

積層ゴム免震支承装置を基礎又は構造物に取り付けるための本発明の第一の態様の積層ゴム免震支承装置の取付構造では、積層ゴム免震支承装置の一方の端面に固着されている取付板は、当該積層ゴム免震支承装置の一方の端面への固着部よりも外側において基礎又は構造物の取付面に基礎又は構造物に固着された複数のボルトを介して水平方向に関して不動に係止されており、各ボルトが貫通する取付板の各貫通孔は、ボルトによる取付板の基礎又は構造物の取付面への係止部が積層ゴム免震支承装置の一方の端面の中央部を中心とした放射方向に移動できるように、当該放射方向に伸びる長孔となっている。   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 through which each bolt passes is fixed to the base of the mounting plate by the bolt or to the mounting surface of the structure at the center of one end surface of the laminated rubber seismic isolation device It is a long hole extending in the radial direction so that it can move in the central radial direction.

第一の態様の取付構造によれば、積層ゴム免震支承装置の一方の端面に固着されている取付板を基礎又は構造物の取付面に水平方向に関して不動に係止する各ボルトが貫通する各貫通孔は、ボルトによる取付板の基礎又は構造物の取付面への係止部が積層ゴム免震支承装置の一方の端面の中央部を中心とした放射方向に移動できるように、当該放射方向に伸びる長孔となっている結果、大きな力で構造物が基礎から離反するように浮き上がる際に、取付板の基礎又は構造物の取付面への係止部の放射方向への移動と共に取付板の積層ゴム免震支承装置の一方の端面への固着部と取付板の基礎又は構造物の取付面への係止部との間の部分に変形を生じさせることができ、而して、この変形により積層ゴム免震支承装置へ大きな鉛直方向の引張り力が作用することを防止でき、しかも、大きな鉛直方向の引張り力の積層ゴム免震支承装置への作用を取付板でもって防止できる結果、構造が簡単であって安価に構成し得る。   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.

積層ゴム免震支承装置の一方の端面を例えば基礎に取り付けるために本発明の取付構造を適用する場合に、積層ゴム免震支承装置の他方の端面を構造物に取り付けるためにも本発明の取付構造を適用してもよく、この逆に、積層ゴム免震支承装置の一方の端面を例えば構造物に取り付けるために本発明の取付構造を適用する場合に、積層ゴム免震支承装置の他方の端面を基礎に取り付けるためも本発明の取付構造を適用してもよい。   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.

本発明ではその第二の態様の取付構造のように、ボルトは膨大頭部を有しており、各貫通孔の周りの取付板は、ボルトの膨大部と基礎又は構造物の取付面との間に当該ボルトの膨大部と基礎又は構造物の取付面とに対して摺動自在となって介在していても、その第三の態様の取付構造のように、ボルトにはナットが螺合されており、各貫通孔の周りの取付板は、ナットと基礎又は構造物の取付面との間に当該ナットと基礎又は構造物の取付面とに対して摺動自在となって介在していてもよい。   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.

取付板は、好ましくは本発明の第四の態様の取付構造のように、積層ゴム免震支承装置の一方の端面の外縁よりも外側において基礎又は構造物の取付面に複数のボルトを介して水平方向に関して不動に係止されている。   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.

取付板は、本発明の第五の態様の取付構造のように他のボルトを介して積層ゴム免震支承装置の一方の端面に固着されていても、これと共に又はこれに代えて、本発明の第六の態様の取付構造のように積層ゴム免震支承装置の一方の端面に加硫接着されて固着されていてもよい。また取付板は、本発明の第七の態様の取付構造のように、積層ゴム免震支承装置の一方の端面の外縁の内側で当該積層ゴム免震支承装置の一方の端面に固着され、本発明の第八の態様の取付構造のように、積層ゴム免震支承装置に一定以上の積層方向の引張り力が加えられようとする場合に、少なくとも積層ゴム免震支承装置の一方の端面への固着部を除く部分で変形を生じて基礎又は構造物の取付面から離反するような剛性を有しているとよく、取付板の変形は弾性変形であることが好ましいが多少の塑性変形があってもよい。   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.

長孔からなる各貫通孔は、本発明の第九の態様の取付構造のように放射方向において取付板の外縁に至る前で閉口又は取付板の外縁で開口している。   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.

積層ゴム免震支承装置は、好ましい例では本発明の第十の態様の取付構造のように粘弾性層と剛性層とが互いに加硫接着されて交互に積層されている積層ゴムを有しており、好ましい他の例では本発明の第十一の態様の取付構造のように粘弾性層と剛性層とが互いに加硫接着されて交互に積層されていると共に積層方向に伸びた少なくとも一つの円柱状の中空部を有した積層ゴムと、この積層ゴムの中空部に充填された鉛プラグとを有している。   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.

積層ゴム免震支承装置は、本発明の第十二の態様の取付構造のようにその他方の端面に固着された更に他の取付板を介して構造物又は基礎の取付面に固着されており、斯かる他の取付板は、本発明の第十三の態様の取付構造のようにボルト又は加硫接着を介して積層ゴム免震支承装置の他方の端面に固着されているとよく、ここで、第十又は第十一の態様の取付構造のように粘弾性層と剛性層とを互いに加硫接着して交互に積層してなる積層ゴムを積層ゴム免震支承装置が有している場合には、他の取付板は、積層ゴムの他方の端面の剛性層、好ましくは厚肉剛性層に螺着されたボルトを介して積層ゴム免震支承装置の他方の端面に固着されていても、積層ゴムの他方の端面の粘弾性層への加硫接着を介して積層ゴム免震支承装置の他方の端面に固着されていてもよい。   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 surface of the laminated rubber seismic isolation device via a bolt screwed to the rigid layer on the other end surface 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.

本発明によれば、積層ゴム免震支承装置へ大きな鉛直方向の引張り力が作用することを防止できて大きな鉛直方向の引張り力に起因する積層ゴム免震支承装置の損壊の虞をなくし得、而して、アスペクト比の大きい構造物にも積層ゴム免震支承装置を用いることができる上に、構造が簡単であって安価に構成し得る積層ゴム免震支承装置の取付構造を提供することができる。   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.

次に本発明を、図に示す好ましい実施の形態の例を参照して更に詳細に説明する。なお、本発明はこれらの例に何等限定されないのである。   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.

図１から図３において、積層ゴム免震支承装置１を基礎２又は構造物３、例えば基礎２に取り付けるための本例の取付構造４では、積層ゴム免震支承装置１の一方の端面、本例では下端面５に当該下端面５の環状の外縁６の内側で複数のボルト７を介して固着された取付板８は、積層ゴム免震支承装置１の下端面５への固着部（複数のボルト７の螺合部位）よりも外側であって外縁６よりも外側において基礎２の取付面９に基礎２に固着された複数のボルト、本例ではアンカーボルト１０を介して水平方向Ｈに関して不動に係止されており、各アンカーボルト１０が貫通する取付板８の各貫通孔１１は、アンカーボルト１０による取付板８の基礎２の取付面９への各係止部（アンカーボルト１０の周りの取付板８の部位）が積層ゴム免震支承装置１の下端面５の中央部を中心とした放射方向Ｒに移動できるように、当該放射方向Ｒに伸びる長孔となっている。   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 each locking portion (the anchor bolt 10 of the anchor bolt 10) to the mounting surface 9 of the foundation 2 of the mounting plate 8 by the anchor bolt 10. Surrounding mounting plate 8 part) is a laminated rubber seismic isolation bearing So that it can move in the radial direction R around the center portion of the lower end surface 5 of the location 1, and has a long hole extending in the radial direction R.

アスペクト比が大きい高層建築物からなる構造物３の鉛直方向の荷重を受けて当該構造物３を支持する積層ゴム免震支承装置１は、ゴム、高減衰ゴム等からなる複数の環状の粘弾性層２１と鋼板等からなる複数の環状の剛性層２２とが互いに加硫接着されて交互に積層されていると共に積層方向に伸びた円柱状の中空部２３を有した積層ゴム２４と、積層ゴム２４の中空部２３に充填された鉛プラグ２５とを有しており、剛性層２２は、下端面５側に配された環状の厚肉鋼板からなる剛性層２６と、他方の端面である上端面２７側に配された環状の厚肉鋼板からなる剛性層２８と、剛性層２６と剛性層２８との間に配された複数枚の環状の薄肉鋼板からなる剛性層２９とからなり、斯かる積層ゴム免震支承装置１において、取付板８は積層ゴム２４の一方の端面でもある下端面５の剛性層２６に螺着されたボルト７を介して積層ゴム免震支承装置１の下端面５に固着されている。   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.

積層ゴム免震支承装置１は、その他方の端面である上端面２７に固着された更に他の取付板３１を介して構造物３の下面３２に固着されており、構造物３に埋め込まれた複数のスタッドボルト３３を介して構造物３に固着された円盤状の鋼板からなる取付板３１は、ボルト又は加硫接着を介して、本例では複数のボルト３４を介して積層ゴム免震支承装置１の上端面２７に固着、より具体的には積層ゴム２４の上端面２７側の剛性層２８に螺着された複数のボルト３４を介して積層ゴム免震支承装置１の上端面２７に固着されている。   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.

円盤状の取付板８において長孔からなる各貫通孔１１は、放射方向Ｒにおいて取付板８の外縁３５に至る前で閉口しており、基礎２に埋設されているアンカーボルト１０の夫々にはナット３６が螺合されており、各貫通孔１１の周りの取付板８は、ナット３６と基礎２の取付面９との間に当該ナット３６と基礎２の取付面９とに対して摺動自在となって介在している。   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.

以上の取付構造４は、地震が生じて基礎２が水平方向Ｈに振動すると、斯かる基礎２の振動を積層ゴム２４に伝達することになり、積層ゴム２４はその粘弾性層２１を介して水平方向Ｈに剪断変形して基礎２の水平方向Ｈの振動に拘わらず構造物３を免震して支持すると共に構造物３の水平方向Ｈの振動を鉛プラグ２５の塑性変形で早期に減衰させる。   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

ところで、大きな地震又は風により構造物３が水平方向Ｈに振動すると共に構造物３のロッキングで基礎２から構造物３が浮き上がろうとして積層ゴム免震支承装置１の積層ゴム２４に一定以上の積層方向の引張り力が加えられようとすると、図４に示すように、取付板８は、基礎２の取付面９への係止部（アンカーボルト１０の周りの部位）の放射方向Ｒへの移動と共に積層ゴム２４の下端面５への固着部（ボルト７の部位）及び基礎２の取付面９への係止部（アンカーボルト１０の周りの部位）を除く環状の部分３７で変形を生じて基礎２の取付面９から離反して積層ゴム免震支承装置１の積層ゴム２４に一定以上の積層方向の引張り力が加えられられないようにする。   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.

このように取付板８は、積層ゴム免震支承装置１に一定以上の積層方向の引張り力が加えられようとする場合、積層ゴム免震支承装置１の下端面５への固着部及び基礎２の取付面９への係止部を除く部分３７で変形を生じて基礎２の取付面９から離反するような剛性を有している。   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.

以上の取付構造４によれば、積層ゴム免震支承装置１の下端面５に固着されている取付板８を基礎２の取付面９に水平方向Ｈに関して不動に係止する各アンカーボルト１０が貫通する各貫通孔１１は、アンカーボルト１０による取付板８の基礎２の取付面９への係止部が積層ゴム免震支承装置１の下端面５の中央部を中心とした放射方向Ｒに移動できるように、当該放射方向Ｒに伸びる長孔となっている結果、大きな力で構造物３が基礎２から離反するように浮き上がる際に、取付板８の基礎２の取付面９への係止部の放射方向Ｒへの移動と共に取付板８の積層ゴム免震支承装置１の下端面５への固着部と取付板８の基礎２の取付面９への係止部との間の部分３７に変形を生じさせることができ、而して、この変形により積層ゴム免震支承装置１へ大きな鉛直方向の引張り力が作用することを防止でき、しかも、大きな鉛直方向の引張り力の積層ゴム免震支承装置１への作用を取付板８でもって防止できる結果、構造が簡単であって安価に構成し得る。   According to the mounting structure 4 described above, each anchor bolt 10 that locks the mounting plate 8 fixed to the lower end surface 5 of the laminated rubber seismic isolation device 1 to the mounting surface 9 of the foundation 2 in the horizontal direction H is provided. Each penetrating through hole 11 has a locking portion to the mounting surface 9 of the foundation 2 of the mounting plate 8 by the anchor bolt 10 in a radial direction R centering on the central portion of the lower end surface 5 of the laminated rubber seismic isolation device 1. As a result of the elongated holes extending in the radial direction R so that they can move, when the structure 3 is lifted away from the foundation 2 with a large force, the attachment of the attachment plate 8 to the attachment surface 9 of the foundation 2 The portion between the fixing portion of the mounting plate 8 to the lower end surface 5 of the laminated rubber seismic isolation bearing device 1 and the locking portion of the mounting plate 8 to the mounting surface 9 of the foundation 2 as the stop portion moves in the radial direction R. 37 can be deformed, and thus the deformation of the laminated rubber is supported by this deformation. As a result, it is possible to prevent a large vertical pulling force from acting on 1 and to prevent the large vertical pulling force from acting on the laminated rubber seismic isolation device 1 with the mounting plate 8. And can be configured inexpensively.

ところで取付構造４を用いる積層ゴム免震支承装置１としては、図５に示すような積層ゴム免震支承装置１でもよく、斯かる積層ゴム免震支承装置１は、鉛プラグ２５を有しないで、ゴム、高減衰ゴム等からなる複数の円盤状の粘弾性層２１と鋼板等からなる複数の円盤状の剛性層２２とが互いに加硫接着されて交互に積層されている円柱状の積層ゴム２４を有しており、剛性層２２は、下端面５側に配された円盤状の厚肉鋼板からなる剛性層２６と、他方の端面である上端面２７側に配された円盤状の厚肉鋼板からなる剛性層２８と、剛性層２６と剛性層２８との間に配された複数枚の円盤状の薄肉鋼板からなる剛性層２９とからなる。   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.

また、図５及び図６に示すように夫々が放射方向Ｒにおいて外縁３５で開口している長孔からなる複数の貫通孔１１を有した取付板８を用いて取付構造４を具体化してもよく、斯かる外縁３５で開口している長孔からなる貫通孔１１と外縁３５で閉口している長孔からなる貫通孔１１とが混在した取付板８を用いて取付構造４を具体化してもよい。   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.

更に上記では貫通孔１１の周りの取付板８をナット３６と基礎２の取付面９との間に当該ナット３６と基礎２の取付面９とに対して摺動自在となって介在させたが、これに代えて、膨大頭部を有したボルト１０を用いて各貫通孔１１の周りの取付板８をボルト１０の膨大部と基礎２の取付面９との間に当該ボルト１０の膨大部と基礎２の取付面９とに対して摺動自在となって介在させてもよい。   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.

取付板８は、積層ゴム２４の下端面５側が剛性層２２に代えて粘弾性層２１からなる場合には、斯かる粘弾性層２１への加硫接着を介して積層ゴム免震支承装置１の下端面５に加硫接着されて固着されていてもよく、取付板３１も同様であって、積層ゴム２４の上端面２７側が剛性層２２に代えて粘弾性層２１からなる場合には、粘弾性層２１への加硫接着を介して積層ゴム免震支承装置１の上端面２７に加硫接着されて固着されていてもよい。   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.

また上記例では取付構造４を基礎２及び積層ゴム免震支承装置１の間に介在させたが、これに代えて若しくはこれと共に構造物３及び積層ゴム免震支承装置１の間に介在させてもよく、更に、上記では積層ゴム免震支承装置１並びに取付板８及び３１の夫々を円柱状並びに円盤状に構成したが、本発明はこれらに限定されず角柱状並びに角板状（四角及び多角形を含む）に構成してもよい。   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 thereto, and the prismatic shape and the square plate shape (square and (Including a polygon).

本発明の好ましい実施の形態の一例の断面図である。It is sectional drawing of an example of preferable embodiment of this invention. 図１に示すＩＩ−ＩＩ線矢視断面説明図である。It is II-II arrow sectional view explanatory drawing shown in FIG. 図１に示す取付板の平面図である。It is a top view of the attachment plate shown in FIG. 図１に示す例の動作説明図である。It is operation | movement explanatory drawing of the example shown in FIG. 本発明の好ましい実施の形態の他の例の断面図である。It is sectional drawing of the other example of preferable embodiment of this invention. 図５に示す取付板の平面図である。FIG. 6 is a plan view of the mounting plate shown in FIG. 5.

符号の説明Explanation of symbols

１ 積層ゴム免震支承装置
２ 基礎
３ 構造物
４ 取付構造
５ 下端面
６ 外縁
７ ボルト
８ 取付板
９ 取付面
１０ アンカーボルト
１１ 貫通孔 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 (14)

積層ゴム免震支承装置を基礎又は構造物に取り付けるための取付構造であって、積層ゴム免震支承装置の一方の端面に固着されている取付板は、当該積層ゴム免震支承装置の一方の端面への固着部よりも外側において基礎又は構造物の取付面に基礎又は構造物に固着された複数のボルトを介して水平方向に関して不動に係止されており、各ボルトが貫通する取付板の各貫通孔は、ボルトによる取付板の基礎又は構造物の取付面への各係止部が積層ゴム免震支承装置の一方の端面の中央部を中心とした放射方向に移動できるように、当該放射方向に伸びる長孔となっている積層ゴム免震支承装置の取付構造。   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. Outside the fixed portion to the end surface, the mounting surface of the mounting plate through which each bolt passes is fixedly locked in the horizontal direction via a plurality of bolts fixed to the mounting surface of the foundation or structure on the mounting surface of the foundation or structure. Each through-hole is connected to the base of the mounting plate or the mounting surface of the structure with bolts so that each locking portion can move in the radial direction around the center of one end surface of the laminated rubber seismic isolation device. Mounting structure of laminated rubber seismic isolation device which is a long hole extending in the radial direction. ボルトは膨大頭部を有しており、各貫通孔の周りの取付板は、ボルトの膨大部と基礎又は構造物の取付面との間に当該ボルトの膨大部と基礎又は構造物の取付面とに対して摺動自在となって介在している請求項１に記載の積層ゴム免震支承装置の取付構造。   The bolt has an enormous head, and the mounting plate around each through-hole is between the enormous part of the bolt and the attachment surface of the foundation or structure between the enormous part of the bolt and the attachment surface of the foundation or structure. 2. The structure for mounting a laminated rubber seismic isolation device according to claim 1, wherein the structure is slidable with respect to the laminated rubber. ボルトにはナットが螺合されており、各貫通孔の周りの取付板は、ナットと基礎又は構造物の取付面との間に当該ナットと基礎又は構造物の取付面とに対して摺動自在となって介在している請求項１又は２に記載の積層ゴム免震支承装置の取付構造。   A nut is screwed onto the bolt, and the mounting plate around each through hole slides between the nut and the mounting surface of the foundation or structure between the nut and the mounting surface of the foundation or structure. The structure for mounting a laminated rubber seismic isolation device according to claim 1 or 2, wherein the structure is freely interposed. 取付板は、積層ゴム免震支承装置の一方の端面の外縁よりも外側において基礎又は構造物の取付面に複数のボルトを介して水平方向に関して不動に係止されている請求項１から３のいずれか一項に記載の積層ゴム免震支承装置の取付構造。   The mounting plate is fixed to the mounting surface of the foundation or the structure immovably with respect to the horizontal direction via a plurality of bolts outside the outer edge of one end surface of the laminated rubber seismic isolation bearing device. A mounting structure of the laminated rubber seismic isolation device according to any one of the above. 取付板は、他のボルトを介して積層ゴム免震支承装置の一方の端面に固着されている請求項１から４のいずれか一項に記載の積層ゴム免震支承装置の取付構造。   The mounting structure of the laminated rubber seismic isolation device according to any one of claims 1 to 4, wherein the mounting plate is fixed to one end surface of the laminated rubber seismic isolation device via another bolt. 取付板は、積層ゴム免震支承装置の一方の端面に加硫接着されて固着されている請求項１から５のいずれか一項に記載の積層ゴム免震支承装置の取付構造。   The mounting structure of a laminated rubber seismic isolation device according to any one of claims 1 to 5, wherein the mounting plate is vulcanized and bonded to one end surface of the laminated rubber seismic isolation device. 取付板は、積層ゴム免震支承装置の一方の端面の外縁よりも内側で当該積層ゴム免震支承装置の一方の端面に固着されている請求項１から６のいずれか一項に記載の積層ゴム免震支承装置の取付構造。   The laminated plate according to any one of claims 1 to 6, wherein the mounting plate is fixed to one end surface of the laminated rubber seismic isolation device inside the outer edge of the one end surface of the laminated rubber seismic isolation device. Mounting structure of rubber seismic isolation device. 取付板は、積層ゴム免震支承装置に一定以上の積層方向の引張り力が加えられようとする場合に、少なくとも積層ゴム免震支承装置の一方の端面への固着部を除く部分で変形を生じて基礎又は構造物の取付面から離反するような剛性を有している請求項１から７のいずれか一項に記載の積層ゴム免震支承装置の取付構造。   The mounting plate is deformed at least in the part excluding the part fixed to one end face of the laminated rubber seismic isolation device when a certain amount of tensile force in the laminating direction is 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 mounting structure has a rigidity that separates from a mounting surface of a foundation or a structure. 長孔からなる各貫通孔は、放射方向において取付板の外縁に至る前で閉口又は取付板の外縁で開口している請求項１から８のいずれか一項に記載の積層ゴム免震支承装置の取付構造。   The laminated rubber seismic isolation device according to any one of claims 1 to 8, 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. 積層ゴム免震支承装置は、粘弾性層と剛性層とが互いに加硫接着されて交互に積層されている積層ゴムを有している請求項１から９のいずれか一項に記載の積層ゴム免震支承装置の取付構造。   10. The laminated rubber according to claim 1, wherein the laminated rubber seismic isolation device includes a laminated rubber in which a viscoelastic layer and a rigid layer are alternately laminated by vulcanization bonding. Mounting structure for seismic isolation bearing device. 積層ゴム免震支承装置は、粘弾性層と剛性層とが互いに加硫接着されて交互に積層されていると共に積層方向に伸びた少なくとも一つの円柱状の中空部を有した積層ゴムと、この積層ゴムの中空部に充填された鉛プラグとを有している請求項１から９のいずれか一項に記載の積層ゴム免震支承装置の取付構造。   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 9, further comprising a lead plug filled in a hollow portion of the laminated rubber. 積層ゴム免震支承装置は、その他方の端面に固着された他の取付板を介して構造物又は基礎の取付面に固着されている請求項１から１１のいずれか一項に記載の積層ゴム免震支承装置の取付構造。   The laminated rubber according to any one of claims 1 to 11, wherein the laminated rubber seismic isolation device is fixed to a structure or foundation mounting surface via another mounting plate fixed to the other end surface. Mounting structure for seismic isolation bearing device. 他の取付板は、ボルト又は加硫接着を介して積層ゴム免震支承装置の他方の端面に固着されている請求項１２に記載の積層ゴム免震支承装置の取付構造。   The mounting structure of a laminated rubber seismic isolation device according to claim 12, wherein the other mounting plate is fixed to the other end face of the laminated rubber seismic isolation device via bolts or vulcanization adhesion. 請求項１から１３のいずれか一項に記載の積層ゴム免震支承装置の取付構造に用いるための積層ゴム免震支承装置。   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 13.
JP2003412434A 2003-12-10 2003-12-10 Laminated rubber seismic isolation device mounting structure Expired - Lifetime JP4631275B2 (en)

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JP2012082939A (en) * 2010-10-14 2012-04-26 Bridgestone Corp Aseismatic base isolation device
JP2015200390A (en) * 2014-04-09 2015-11-12 株式会社ブリヂストン Seismic isolation device
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JP2012082939A (en) * 2010-10-14 2012-04-26 Bridgestone Corp Aseismatic base isolation device
JP2015200390A (en) * 2014-04-09 2015-11-12 株式会社ブリヂストン Seismic isolation device
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CN112049899A (en) * 2020-08-07 2020-12-08 加西贝拉压缩机有限公司 Refrigerator compressor rubber vibration isolation pad and vibration damping connection structure

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