JP2000001820A - Laminated rubber bearing - Google Patents
Laminated rubber bearingInfo
- Publication number
- JP2000001820A JP2000001820A JP10169709A JP16970998A JP2000001820A JP 2000001820 A JP2000001820 A JP 2000001820A JP 10169709 A JP10169709 A JP 10169709A JP 16970998 A JP16970998 A JP 16970998A JP 2000001820 A JP2000001820 A JP 2000001820A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- laminated
- reinforcing
- rubber layer
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bridges Or Land Bridges (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ビルや戸建て住宅
等の建築物、橋梁等の土木構造物等の免震などに利用さ
れる積層ゴム支承に関し、さらに詳しくは、ゴム層にお
ける局部的な歪みの発生を抑制し、ゴム層の局部破壊を
防止すると共に、外観を正常に保つことを可能にした積
層ゴム支承に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated rubber bearing used for seismic isolation of buildings such as buildings and detached houses, civil structures such as bridges, etc. The present invention relates to a laminated rubber bearing capable of suppressing the occurrence of distortion, preventing local destruction of a rubber layer, and maintaining a normal appearance.
【０００２】[0002]
【従来の技術】従来、ビルや戸建て住宅等の建築物、橋
梁等の土木構造物等の免震支承の構造として、例えば、
未加硫のゴムシートと接着処理した中間鋼板とを交互に
積層して一体的に加硫成形し、その積層体の上下両端面
に端部鋼板を加硫接着したフランジ一体型の積層ゴム支
承が知られている。2. Description of the Related Art Conventionally, as a structure of a seismic isolation bearing such as a building such as a building or a detached house, or a civil structure such as a bridge, for example,
Unvulcanized rubber sheet and bonded intermediate steel sheet are alternately laminated and vulcanized and formed integrally, and end steel sheets are vulcanized and bonded to both upper and lower end surfaces of the laminate. It has been known.
【０００３】しかしながら、上述の積層ゴム支承は水平
方向の剪断力を受けると、端部鋼板との接合面のゴム層
に極めて大きな歪みが発生し、端部鋼板付近のゴム層に
永久変形を引き起こす場合がある。特に、上記傾向はゴ
ム層として高減衰ゴムを使用した場合に顕著に現れる。
そして、ゴム層に局部的な歪みが残存すると、積層ゴム
支承の外観を損ねるばかりでなく、その残存した歪みが
ゴム層の局部破壊を引き起こすという問題があった。[0003] However, when the above-mentioned laminated rubber bearing is subjected to a shearing force in the horizontal direction, an extremely large distortion is generated in the rubber layer at the joint surface with the end steel plate, causing permanent deformation of the rubber layer near the end steel plate. There are cases. In particular, the above tendency becomes remarkable when a high attenuation rubber is used as the rubber layer.
When the local distortion remains in the rubber layer, not only does the appearance of the laminated rubber bearing deteriorate, but also the remaining distortion causes a local destruction of the rubber layer.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、ゴム
層における局部的な歪みの発生を抑制し、ゴム層の局部
破壊を防止すると共に、外観を正常に保つことを可能に
した積層ゴム支承を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a laminated rubber capable of suppressing the occurrence of local distortion in a rubber layer, preventing local destruction of the rubber layer, and maintaining a normal appearance. To provide bearings.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
の本発明の積層ゴム支承は、ゴム層と中間鋼板とを交互
に積層した積層体の上下両端面に端部鋼板を一体的に取
り付けた積層ゴム支承において、前記端部鋼板付近のゴ
ム層の少なくとも周縁部に補強ゴムを配置し、該補強ゴ
ムの剪断弾性係数Ｇを前記ゴム層の本体ゴムよりも高く
したことを特徴とするものである。In order to achieve the above object, a laminated rubber bearing according to the present invention is characterized in that end steel plates are integrally attached to both upper and lower end surfaces of a laminated body in which a rubber layer and an intermediate steel plate are alternately laminated. In the laminated rubber bearing described above, reinforcing rubber is arranged at least at the peripheral edge of the rubber layer near the end steel plate, and the shear elastic modulus G of the reinforcing rubber is set higher than the main rubber of the rubber layer. It is.
【０００６】また、上記目的を達成するための本発明の
他の積層ゴム支承は、ゴム層と中間鋼板とを交互に積層
した積層体の上下両端面に端部鋼板を一体的に取り付け
た積層ゴム支承において、前記ゴム層の本体ゴムに高減
衰ゴムを使用すると共に、前記端部鋼板付近のゴム層の
少なくとも周縁部に補強ゴムを配置し、該補強ゴムに天
然ゴム系の材料を使用したことを特徴とするものであ
る。In order to achieve the above object, another laminated rubber bearing according to the present invention is a laminated rubber bearing in which end steel plates are integrally attached to upper and lower end surfaces of a laminated body in which a rubber layer and an intermediate steel plate are alternately laminated. In the rubber bearing, a high-damping rubber was used for the main rubber of the rubber layer, and a reinforcing rubber was arranged at least on the peripheral edge of the rubber layer near the end steel plate, and a natural rubber-based material was used for the reinforcing rubber. It is characterized by the following.
【０００７】このように端部鋼板付近のゴム層の周縁
部、即ち局部歪みが発生しやすい部分に上記補強ゴムを
配置したことにより、ゴム層の大部分に高減衰ゴムを使
用した場合であっても、ゴム層における局部的な歪みの
発生を効果的に抑制することが可能になり、その結果と
して、ゴム層の局部破壊を防止すると共に、外観を正常
に保持することができる。[0007] By arranging the reinforcing rubber at the peripheral portion of the rubber layer near the end steel plate, that is, at the portion where local distortion is likely to occur, a high damping rubber is used for most of the rubber layer. Even so, it is possible to effectively suppress the occurrence of local distortion in the rubber layer, and as a result, it is possible to prevent local destruction of the rubber layer and to maintain a normal appearance.
【０００８】[0008]
【発明の実施の形態】以下、本発明の構成について添付
の図面を参照して詳細に説明する。図１は本発明の実施
形態からなる積層ゴム支承を例示するものである。図に
おいて、積層ゴム支承は、複数層のゴム層１と複数枚の
中間鋼板２とを交互に積層した円柱状の積層体の上下両
端面に円盤状の端部鋼板３を一体的に取り付けた構造に
なっている。この積層ゴム支承は、例えば、未加硫のゴ
ムシートと接着処理した中間鋼板２とを交互に積層して
一体的に加硫成形し、その積層体の上下両端面に端部鋼
板３を加硫接着して形成することができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 illustrates a laminated rubber bearing according to an embodiment of the present invention. In the figure, a laminated rubber bearing has a disk-shaped end steel plate 3 integrally attached to upper and lower end surfaces of a columnar laminated body in which a plurality of rubber layers 1 and a plurality of intermediate steel plates 2 are alternately laminated. It has a structure. In this laminated rubber bearing, for example, an unvulcanized rubber sheet and an adhesively treated intermediate steel plate 2 are alternately laminated and vulcanized and formed integrally, and end steel plates 3 are applied to both upper and lower end surfaces of the laminate. It can be formed by sulfur bonding.
【０００９】複数層のゴム層１は、端部鋼板３付近に位
置するゴム層１の周縁部１ａを除いた部分が高減衰ゴム
から構成されている。この高減衰ゴムは２５℃、１５０
％伸長時のヒステリシスロスが５０％以上で、かつ２５
℃、１５０％伸長時の５回目の応力が９ｋｇｆ／ｃｍ2
以下となる物性を有するものである。このような高減衰
ゴムは所定の免震性能を発揮するようになっている。高
減衰ゴムとしては、天然ゴム（ＮＲ）、イソプレンゴム
（ＩＲ）、スチレンブタジエン共重合ゴム（ＳＢＲ）、
ブタジエンゴム（ＢＲ）、アクリロニトリルブタジエン
ゴム（ＮＢＲ）、シリコーンゴム等を使用することがで
きる。また、これらゴムには、必要に応じて、充填剤、
可塑剤、老化防止剤、加硫剤、加硫促進剤、加硫助剤等
の添加剤を配合することができる。充填剤としては、Ｈ
ＡＦカーボン、ＳＡＦカーボン等のカーボンブラック等
が、可塑剤としては、アロマオイル、ワックス等が、加
硫剤としては、硫黄、亜鉛華等が、加硫促進剤として
は、Ｎ−シクロヘキシル−２−ベンゾチアゾールスルフ
ェンアミド（ＣＢＳ）、ジベンゾチアジルジスルファイ
ド（ＤＭ）等が、加硫助剤としては、ステアリン酸等が
挙げられる。The plurality of rubber layers 1 are made of high-damping rubber except for the peripheral edge 1a of the rubber layer 1 located near the end steel plate 3. This high damping rubber is 25 ° C., 150
% Elongation hysteresis loss is 50% or more and 25%
The fifth stress at 150 ° C. and 150% elongation is 9 kgf / cm 2
It has the following physical properties. Such a high-damping rubber exhibits a predetermined seismic isolation performance. As the high attenuation rubber, natural rubber (NR), isoprene rubber (IR), styrene butadiene copolymer rubber (SBR),
Butadiene rubber (BR), acrylonitrile butadiene rubber (NBR), silicone rubber and the like can be used. In addition, if necessary, fillers,
Additives such as a plasticizer, an antioxidant, a vulcanizing agent, a vulcanization accelerator and a vulcanization aid can be compounded. As the filler, H
Carbon blacks such as AF carbon and SAF carbon, plasticizers include aroma oils and waxes, vulcanizing agents include sulfur and zinc white, and vulcanization accelerators include N-cyclohexyl-2-carbonate. Benzothiazolesulfenamide (CBS), dibenzothiazyldisulfide (DM) and the like, and vulcanization aids include stearic acid and the like.
【００１０】高減衰ゴムは免震性能が優れているもの
の、水平方向に極度な剪断力を受けると、永久歪みが残
存し易いという欠点がある。そこで、本発明では積層ゴ
ム支承に対して水平方向に剪断力を与えたときの永久歪
みの発生位置を詳細に解析し、その解析結果に基づいて
局部歪みが発生しやすい部分に枠状に補強ゴムを配置し
たのである。即ち、端部鋼板３付近のゴム層１の周縁部
１ａは、ゴム層１の本体ゴムとは物性が異なる補強ゴム
から構成されている。[0010] Although high damping rubber has excellent seismic isolation performance, it suffers from the drawback that permanent strain tends to remain when subjected to an extreme shearing force in the horizontal direction. Therefore, in the present invention, the position where permanent distortion occurs when a shear force is applied to the laminated rubber bearing in the horizontal direction is analyzed in detail, and based on the analysis result, a frame-like reinforcement is applied to a portion where local distortion is likely to occur. The rubber was placed. That is, the peripheral portion 1 a of the rubber layer 1 near the end steel plate 3 is made of reinforcing rubber having different physical properties from the main rubber of the rubber layer 1.
【００１１】ゴム層１の周縁部１ａに配置する補強ゴム
としては、ゴム層１の本体ゴムよりも剪断弾性係数Ｇを
高くした高弾性ゴムを使用することができる。高弾性ゴ
ムはゴム層１の本体ゴムより弾性率が高いものであれば
該本体ゴムと同種類のゴム及び添加剤を使用することが
可能である。この補強ゴムの剪断断弾性係数Ｇは本体ゴ
ムの剪断断弾性係数Ｇの１．１〜３倍、より好ましくは
１．２〜２倍にすることが望ましい。この値が１．１倍
未満であると歪み抑制効果が不十分になる。なお、剪断
断弾性係数Ｇ（ｋｇｆ／ｃｍ2 ）は２軸剪断試験機によ
り、０．５Ｈｚ、１５０％伸長時の条件で測定したもの
である。As the reinforcing rubber disposed on the peripheral portion 1a of the rubber layer 1, a high elastic rubber having a higher shear modulus G than the main rubber of the rubber layer 1 can be used. As long as the high elastic rubber has a higher elastic modulus than the main rubber of the rubber layer 1, it is possible to use the same type of rubber and additives as the main rubber. It is desirable that the shear elastic modulus G of the reinforcing rubber be 1.1 to 3 times, more preferably 1.2 to 2 times the shear elastic modulus G of the main rubber. If this value is less than 1.1 times, the effect of suppressing distortion becomes insufficient. The shear modulus of elasticity G (kgf / cm 2 ) was measured by a biaxial shear tester under the conditions of 0.5 Hz and 150% elongation.
【００１２】上述のように端部鋼板３付近のゴム層１の
周縁部１ａに高弾性ゴムからなる補強ゴムを配置するこ
とにより、特にゴム層１の本体ゴムに高減衰ゴムを使用
して所定の免震性能を得ようとした場合であっても、ゴ
ム層１における局部的な歪みの発生を効果的に抑制する
ことが可能になるので、ゴム層の局部破壊を防止し、し
かも外観を正常に保持することができる。As described above, by arranging the reinforcing rubber made of high elastic rubber on the peripheral edge 1a of the rubber layer 1 near the end steel plate 3, it is possible to use a high damping rubber for the main rubber of the rubber layer 1 in particular. Therefore, even if it is intended to obtain the seismic isolation performance, it is possible to effectively suppress the occurrence of local distortion in the rubber layer 1, so that the local destruction of the rubber layer is prevented and the appearance is improved. It can be held normally.
【００１３】また、ゴム層１の本体ゴムに高減衰ゴムを
使用する場合には、ゴム層１の周縁部１ａに配置する補
強ゴムとして、歪みに対して強い天然ゴム系の材料を使
用することができる。特に高減衰化していない通常の天
然ゴムは歪みに対して強いので好ましい。なお、天然ゴ
ム系の材料とはゴム１００重量部のうち５０重量部以上
の天然ゴムを含むゴム組成物を意味する。また、補強ゴ
ムとして天然ゴム系の材料を使用する場合においても、
補強ゴムの剪断弾性係数Ｇをゴム層１の本体ゴムよりも
高くすることが好ましい。When a high-attenuation rubber is used as the main rubber of the rubber layer 1, a natural rubber-based material resistant to distortion is used as the reinforcing rubber disposed on the peripheral edge 1a of the rubber layer 1. Can be. In particular, ordinary natural rubber that is not highly damped is preferable because it is resistant to distortion. The natural rubber-based material means a rubber composition containing 50 parts by weight or more of natural rubber out of 100 parts by weight of rubber. Also, when using a natural rubber-based material as the reinforcing rubber,
It is preferable that the shear modulus G of the reinforcing rubber is higher than that of the main rubber of the rubber layer 1.
【００１４】上述のようにゴム層１の本体ゴムに高減衰
ゴムを使用する一方で、端部鋼板３付近のゴム層１の周
縁部１ａに天然ゴム系材料からなる補強ゴムを配置する
ことにより、ゴム層１の大部分に高減衰ゴムを使用して
所定の免震性能を得ようとした場合であっても、ゴム層
１における局部的な歪みの発生を効果的に抑制すること
が可能になるので、ゴム層の局部破壊を防止し、しかも
外観を正常に保持することができる。As described above, while the high damping rubber is used as the main rubber of the rubber layer 1, the reinforcing rubber made of a natural rubber material is disposed on the peripheral edge 1 a of the rubber layer 1 near the end steel plate 3. Even if it is intended to obtain a predetermined seismic isolation performance by using high-damping rubber for most of the rubber layer 1, it is possible to effectively suppress the occurrence of local distortion in the rubber layer 1. Therefore, local destruction of the rubber layer can be prevented, and the appearance can be normally maintained.
【００１５】本発明において、補強ゴムは端部鋼板３側
の１層〜５層のゴム層１に配置するようにすればよい。
これは、水平方向の剪断力による歪みの影響が主として
端部鋼板３側の１層〜５層のゴム層１に及ぶからであ
る。特に、補強ゴムを複数層のゴム層１に配置する場
合、これら複数層のゴム層１に対して一種類の補強ゴム
を配置してもよいが、層間で材料や物性を互いに異なら
せてもよい。この場合、複数層のゴム層１において、補
強ゴムの剪断弾性係数Ｇを端部鋼板３に近い側ほど段階
的に高くすることが好ましい。また、補強ゴムを複数層
のゴム層１に配置する場合、これら複数層のゴム層１に
対して同一体積の補強ゴムを配置してもよいが、層間で
体積を互いに異ならせてもよい。この場合、図２に示す
ように、複数層のゴム層１において、周縁部１ａにおけ
る補強ゴムの体積を端部鋼板３に近い側ほど段階的に大
きくすることが好ましい。In the present invention, the reinforcing rubber may be disposed in one to five rubber layers 1 on the end steel plate 3 side.
This is because the influence of the distortion due to the shearing force in the horizontal direction mainly affects the first to fifth rubber layers 1 on the end steel plate 3 side. In particular, when the reinforcing rubber is disposed on the plurality of rubber layers 1, one type of reinforcing rubber may be disposed on the plurality of rubber layers 1, but the materials and physical properties may be different between the layers. Good. In this case, in the plurality of rubber layers 1, it is preferable that the shear modulus of elasticity G of the reinforcing rubber is gradually increased toward the end steel plate 3. When the reinforcing rubber is disposed on the plurality of rubber layers 1, the same volume of the reinforcing rubber may be disposed on the plurality of rubber layers 1, or the volumes may be different between the layers. In this case, as shown in FIG. 2, in the plurality of rubber layers 1, it is preferable that the volume of the reinforcing rubber in the peripheral portion 1 a is gradually increased toward the side closer to the end steel plate 3.
【００１６】更に、補強ゴムの厚さ方向の配置領域はゴ
ム層全厚の５〜３０％にすることが好ましい。この補強
ゴムの厚さ方向の配置領域がゴム層全厚の５％未満であ
ると歪み抑制効果が不十分になり、逆に３０％を超える
と本体ゴムによる免震性能に悪影響を与えてしまう。ま
た、補強ゴムの面方向の配置領域はゴム層半径の５〜３
０％にすることが好ましい。この補強ゴムの面方向の配
置領域がゴム層半径の５％未満であると歪み抑制効果が
不十分になり、逆に３０％を超えると本体ゴムによる免
震性能に悪影響を与えてしまう。Further, it is preferable that the area where the reinforcing rubber is arranged in the thickness direction is 5 to 30% of the total thickness of the rubber layer. If the area in which the reinforcing rubber is arranged in the thickness direction is less than 5% of the total thickness of the rubber layer, the effect of suppressing distortion is insufficient, and if it exceeds 30%, the seismic isolation performance of the main rubber is adversely affected. . The area in which the reinforcing rubber is arranged in the plane direction is 5 to 3 times the rubber layer radius.
Preferably, it is 0%. If the area of the reinforcing rubber in the surface direction is less than 5% of the radius of the rubber layer, the effect of suppressing the distortion becomes insufficient, and if it exceeds 30%, the seismic isolation performance of the main rubber is adversely affected.
【００１７】[0017]
【実施例】図１に示すように、高減衰ゴムからなるゴム
層と中間鋼板とを交互に積層した積層体の上下両端面に
端部鋼板を一体的に取り付けた積層ゴム支承において、
端部鋼板側の３層のゴム層（ゴム層全厚の約２０％）の
周縁部１ａに、本体の高減衰ゴムより剪断弾性係数Ｇが
高い高減衰ゴムを配置した実施例１〜３と、全てのゴム
層を同一の高減衰ゴムだけで構成した従来例とを製作し
た。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, in a laminated rubber bearing in which end steel plates are integrally attached to both upper and lower end surfaces of a laminated body in which a rubber layer made of high damping rubber and an intermediate steel plate are alternately laminated,
Examples 1 to 3 in which a high-damping rubber having a higher shear modulus G than the high-damping rubber of the main body are arranged on the peripheral edge 1a of the three rubber layers (about 20% of the total thickness of the rubber layer) on the end steel plate side. And a conventional example in which all rubber layers were constituted only by the same high attenuation rubber.
【００１８】なお、実施例１は高弾性ゴムの剪断弾性係
数Ｇを各ゴム層で本体ゴムの剪断弾性係数Ｇの１．８倍
にしたものである。実施例２は高弾性ゴムの剪断弾性係
数Ｇを端部鋼板側のゴム層から本体ゴムの剪断弾性係数
Ｇの２．７倍、１．８倍、１．５倍と段階的に本体ゴム
に近づけたものである。また、実施例３は高弾性ゴムの
剪断弾性係数Ｇを端部鋼板側のゴム層から本体ゴムの剪
断弾性係数Ｇの１．８倍、１．８倍、１．５倍としたも
のである。In the first embodiment, the shear modulus G of the high modulus rubber is 1.8 times the shear modulus G of the main rubber in each rubber layer. In Example 2, the shear modulus G of the high modulus rubber was gradually changed from the rubber layer on the end steel plate side to 2.7 times, 1.8 times and 1.5 times the shear modulus of elasticity G of the main rubber. It is closer. In Example 3, the shear elastic modulus G of the high elastic rubber was 1.8 times, 1.8 times and 1.5 times the shear elastic coefficient G of the main rubber from the rubber layer on the end steel plate side. .
【００１９】また、実施例４として、図１のゴム層１の
本体ゴムに高減衰ゴムを用い、周縁部１ａに高減衰でな
い天然ゴム系材料を用いた積層ゴム支承を製作した。上
記従来例及び実施例１〜４の積層ゴム支承に対して、同
一条件で水平方向の剪断力を与え、永久歪みの発生状況
を調べた。その結果、実施例１〜４は従来例に比べて端
部鋼板付近における変形が少なくなっていた。特に、高
弾性ゴムの剪断弾性係数Ｇを端部鋼板側のゴム層から段
階的に変化させた実施例２〜３は形状変化が極めて少な
く、安定した形状になっていた。Further, as Example 4, a laminated rubber bearing was manufactured using a high-damping rubber as the main rubber of the rubber layer 1 of FIG. 1 and a non-high-damping natural rubber-based material at the peripheral portion 1a. A horizontal shearing force was applied to the laminated rubber bearings of the above-described conventional example and Examples 1 to 4 under the same conditions, and the state of generation of permanent strain was examined. As a result, in Examples 1 to 4, deformation near the end steel plate was smaller than in the conventional example. In particular, in Examples 2 and 3 in which the shear modulus G of the high elastic rubber was changed stepwise from the rubber layer on the end steel plate side, the shape change was extremely small, and the shape was stable.
【００２０】[0020]
【発明の効果】以上説明したように本発明によれば、ゴ
ム層と中間鋼板とを交互に積層した積層体の上下両端面
に端部鋼板を一体的に取り付けた積層ゴム支承におい
て、前記端部鋼板付近のゴム層の少なくとも周縁部に補
強ゴムを配置したことにより、ゴム層の大部分に高減衰
ゴムを使用した場合であっても、ゴム層における局部的
な歪みの発生を抑制することが可能になるので、ゴム層
の局部破壊を防止すると共に、外観を正常に保つことが
できる。As described above, according to the present invention, there is provided a laminated rubber bearing in which end steel plates are integrally attached to upper and lower end surfaces of a laminated body in which rubber layers and intermediate steel plates are alternately laminated. By arranging the reinforcing rubber at least on the peripheral edge of the rubber layer near the steel plate, it is possible to suppress the occurrence of local distortion in the rubber layer even when high-damping rubber is used for most of the rubber layer. Therefore, local destruction of the rubber layer can be prevented, and the appearance can be kept normal.
【００２１】従って、本発明によれば、ビルや戸建て住
宅等の建築物、橋梁等の土木構造物等の免震などに使用
される積層ゴム支承を長寿命化すると共に、その外観を
良好にするという効果を奏する。Therefore, according to the present invention, the life of the laminated rubber bearing used for seismic isolation of buildings such as buildings and detached houses, civil structures such as bridges, etc. is extended, and the appearance thereof is improved. It has the effect of doing.
【図１】本発明の実施形態からなる積層ゴム支承を示す
断面図である。FIG. 1 is a sectional view showing a laminated rubber bearing according to an embodiment of the present invention.
【図２】本発明の他の実施形態からなる積層ゴム支承を
示す断面図である。FIG. 2 is a sectional view showing a laminated rubber bearing according to another embodiment of the present invention.
１ ゴム層 １ａ ゴム層の周縁部 ２ 中間鋼板 ３ 端部鋼板 DESCRIPTION OF SYMBOLS 1 Rubber layer 1a Peripheral part of rubber layer 2 Intermediate steel plate 3 End steel plate
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2D059 AA37 GG01 GG59 4F100 AB03B AK27A AK28A AK29A AK52A AK73A AN00A AN01A AN02A BA02 BA08 DB01 GB07 JH02 JK07A JK20A YY00A ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D059 AA37 GG01 GG59 4F100 AB03B AK27A AK28A AK29A AK52A AK73A AN00A AN01A AN02A BA02 BA08 DB01 GB07 JH02 JK07A JK20A YY00A
Claims (7)
層体の上下両端面に端部鋼板を一体的に取り付けた積層
ゴム支承において、前記端部鋼板付近のゴム層の少なく
とも周縁部に補強ゴムを配置し、該補強ゴムの剪断弾性
係数Ｇを前記ゴム層の本体ゴムよりも高くした積層ゴム
支承。1. A laminated rubber bearing in which end steel plates are integrally attached to both upper and lower end surfaces of a laminate in which rubber layers and intermediate steel plates are alternately stacked, and at least a peripheral portion of the rubber layer near the end steel plates is provided. A laminated rubber bearing in which a reinforcing rubber is disposed, and a shear elastic modulus G of the reinforcing rubber is higher than a main rubber of the rubber layer.
層体の上下両端面に端部鋼板を一体的に取り付けた積層
ゴム支承において、前記ゴム層の本体ゴムに高減衰ゴム
を使用すると共に、前記端部鋼板付近のゴム層の少なく
とも周縁部に補強ゴムを配置し、該補強ゴムに天然ゴム
系の材料を使用した積層ゴム支承。2. A laminated rubber bearing in which end steel plates are integrally attached to both upper and lower end surfaces of a laminated body in which a rubber layer and an intermediate steel plate are alternately laminated, and a high-damping rubber is used as a main rubber of the rubber layer. In addition, a laminated rubber bearing in which a reinforcing rubber is disposed at least on a peripheral portion of a rubber layer near the end steel plate, and a natural rubber-based material is used for the reinforcing rubber.
ム層の本体ゴムよりも高くした請求項２に記載の積層ゴ
ム支承。3. The laminated rubber bearing according to claim 2, wherein the reinforcing rubber has a shear modulus of elasticity G higher than that of the main rubber of the rubber layer.
５層のゴム層に配置した請求項１乃至請求項３のいずれ
か１項に記載の積層ゴム支承。4. The method according to claim 1, wherein the reinforcing rubber is provided in one layer on the end steel plate side.
The laminated rubber bearing according to any one of claims 1 to 3, wherein the laminated rubber bearing is arranged in five rubber layers.
いゴム層ほど大きくした請求項４に記載の積層ゴム支
承。5. The laminated rubber bearing according to claim 4, wherein the volume of the reinforcing rubber is increased in a rubber layer closer to the end steel plate.
ム層全厚の５〜３０％にした請求項１乃至請求項５のい
ずれか１項に記載の積層ゴム支承。6. The laminated rubber bearing according to claim 1, wherein an arrangement area of the reinforcing rubber in a thickness direction is 5% to 30% of a total thickness of the rubber layer.
層半径の５〜３０％にした請求項１乃至請求項６のいず
れか１項に記載の積層ゴム支承。7. The laminated rubber bearing according to claim 1, wherein an arrangement area of the reinforcing rubber in the surface direction is set to 5 to 30% of a rubber layer radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16970998A JP3952105B2 (en) | 1998-06-17 | 1998-06-17 | Laminated rubber bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16970998A JP3952105B2 (en) | 1998-06-17 | 1998-06-17 | Laminated rubber bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000001820A true JP2000001820A (en) | 2000-01-07 |
| JP3952105B2 JP3952105B2 (en) | 2007-08-01 |
Family
ID=15891425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16970998A Expired - Fee Related JP3952105B2 (en) | 1998-06-17 | 1998-06-17 | Laminated rubber bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3952105B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010180959A (en) * | 2009-02-05 | 2010-08-19 | Bridgestone Corp | Base isolation device |
| JP2020204382A (en) * | 2019-06-18 | 2020-12-24 | 株式会社ブリヂストン | Seismic isolation device |
| CN113737959A (en) * | 2021-09-17 | 2021-12-03 | 沈阳建筑大学 | Laminated rubber support based on shear thickening fluid |
-
1998
- 1998-06-17 JP JP16970998A patent/JP3952105B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010180959A (en) * | 2009-02-05 | 2010-08-19 | Bridgestone Corp | Base isolation device |
| JP2020204382A (en) * | 2019-06-18 | 2020-12-24 | 株式会社ブリヂストン | Seismic isolation device |
| JP7227859B2 (en) | 2019-06-18 | 2023-02-22 | 株式会社ブリヂストン | Seismic isolation device |
| CN113737959A (en) * | 2021-09-17 | 2021-12-03 | 沈阳建筑大学 | Laminated rubber support based on shear thickening fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3952105B2 (en) | 2007-08-01 |
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