JP2002021929A - Lead contained rubber bearing device - Google Patents
Lead contained rubber bearing deviceInfo
- Publication number
- JP2002021929A JP2002021929A JP2000199809A JP2000199809A JP2002021929A JP 2002021929 A JP2002021929 A JP 2002021929A JP 2000199809 A JP2000199809 A JP 2000199809A JP 2000199809 A JP2000199809 A JP 2000199809A JP 2002021929 A JP2002021929 A JP 2002021929A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- rubber
- rubber bearing
- bearing device
- peripheral surface
- 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.)
- Pending
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は建築，土木等構造
物の上部構造体と下部構造体との間に介設されるゴム支
承装置に関し、詳しくは内部に鉛を封入して成る鉛入り
ゴム支承装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber bearing device interposed between an upper structure and a lower structure of a structure such as a building or civil engineering, and more particularly, to a lead-containing rubber having lead sealed therein. It relates to a bearing device.
【０００２】[0002]
【従来の技術】従来より、コンクリート建物や橋梁等の
構造物において、上部構造体と下部構造体との間にゴム
支承装置を介設し、そのゴム支承装置を介して下部構造
体により上部構造体を弾性支持するといったことが行わ
れている。2. Description of the Related Art Conventionally, in a structure such as a concrete building or a bridge, a rubber bearing device is provided between an upper structure and a lower structure, and the upper structure is formed by the lower structure via the rubber bearing device. For example, the body is elastically supported.
【０００３】このゴム支承装置の一種として、ゴム支承
体に上下方向に設けた中空部に柱状の鉛を封入した構造
のものが考えられている。この鉛入りゴム支承装置の場
合、地震の際等に鉛が塑性変形し、その際のエネルギー
吸収によって振動減衰し、下部構造体と上部構造体との
間で振動伝達を効果的に抑制することができる。[0003] As one type of the rubber bearing device, a structure in which a columnar lead is sealed in a hollow portion provided in a vertical direction in a rubber bearing body has been considered. In the case of this lead-bearing rubber bearing device, lead plastically deforms in the event of an earthquake, etc., and vibration is attenuated by energy absorption at that time, effectively suppressing vibration transmission between the lower structure and the upper structure. Can be.
【０００４】この鉛は例えば地震後、即ち変形後に再結
晶を行うことで繰返し同レベルの振動減衰機能を発揮す
ることができる。但しそのためには鉛が高純度であるこ
とが必要であり、純度が低いと再結晶が円滑に進行せ
ず、振動減衰特性が低下してしまう。そのため従来にあ
っては、この種鉛入りゴム支承装置用の鉛として純度が
９９．９９％程度の高純度のものが用いられている。This lead can exhibit the same level of vibration damping function repeatedly, for example, by recrystallization after an earthquake, that is, after deformation. However, for that purpose, lead must have high purity, and if the purity is low, recrystallization does not proceed smoothly, and the vibration damping characteristics deteriorate. For this reason, conventionally, high-purity lead having a purity of about 99.99% has been used as lead for such a rubber bearing device containing lead.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら従来の鉛
入りゴム支承装置の場合、中空部の鉛が周囲のゴム支承
体に直接接しており、またゴム支承体のゴムとして強度
に優れた硫黄加硫ゴムが用いられているため、当初は鉛
の純度が高かったとしても、ゴム支承体に含まれている
硫黄分が滲出して鉛中に浸入し、これにより鉛の純度が
低下してしまって経時的にゴム支承装置の振動減衰特性
が低下してしまうといった問題があった。However, in the case of a conventional lead-bearing rubber bearing device, lead in the hollow portion is in direct contact with the surrounding rubber bearing member, and sulfur vulcanization which is excellent in rubber strength of the rubber bearing member is excellent. Because rubber is used, even if the purity of the lead is high at first, the sulfur contained in the rubber bearings oozes out and penetrates into the lead, which reduces the purity of the lead. There has been a problem that the vibration damping characteristics of the rubber bearing device deteriorate over time.
【０００６】[0006]
【課題を解決するための手段】本発明の鉛入りゴム支承
装置はこのような課題を解決するために案出されたもの
である。而して請求項１のものは、上部構造体と下部構
造体との間に介設される支承装置であって、ゴム支承体
に上下方向に設けた中空部に柱状の鉛を封入して成り、
該鉛の変形に基づくエネルギー吸収によって振動減衰す
るようになした鉛入りゴム支承装置において、前記鉛の
外周面と前記ゴム支承体の中空部の内周面との間に筒状
のゴム被覆層を形成して該鉛の外周面を被覆するととも
に、該ゴム被覆層として非硫黄加硫のゴムを用いたこと
を特徴とする。SUMMARY OF THE INVENTION The lead-containing rubber bearing device of the present invention has been devised to solve such a problem. According to a first aspect of the present invention, there is provided a bearing device interposed between an upper structure and a lower structure, wherein a columnar lead is filled in a hollow portion provided in a vertical direction in a rubber bearing. Consisting of
In a lead-containing rubber bearing device which is made to vibrate and attenuate by energy absorption based on deformation of the lead, a cylindrical rubber coating layer is formed between an outer peripheral surface of the lead and an inner peripheral surface of a hollow portion of the rubber bearing body. Is formed to cover the outer peripheral surface of the lead, and a non-sulfur vulcanized rubber is used as the rubber coating layer.
【０００７】請求項２のものは、請求項1において、前
記ゴム被覆層として過酸化物加流，チウラム加硫，キノ
イド加硫，樹脂加硫の何れかのゴムを用いたことを特徴
とする。A second aspect of the present invention is characterized in that, in the first aspect, any one of peroxide-cured, thiuram-cured, quinoid-cured and resin-cured rubber is used as the rubber coating layer. .
【０００８】[0008]
【作用及び発明の効果】以上のように本発明は鉛の外周
面とゴム支承体の（中空部の）内周面との間に筒状のゴ
ム被覆層を形成し、これにより鉛とゴム支承体との接触
を遮断したもので、これによりゴム支承体に含まれる硫
黄分が鉛の内部に浸入するのを防止することができる。As described above, according to the present invention, a cylindrical rubber coating layer is formed between the outer peripheral surface of lead and the inner peripheral surface (of the hollow portion) of the rubber bearing, whereby lead and rubber are formed. This blockades the contact with the bearing, thereby preventing the sulfur contained in the rubber bearing from entering the lead.
【０００９】またゴム被覆層についても本発明では非硫
黄加硫のゴムが用いられているため、ゴム被覆層の硫黄
分が鉛の内部に浸入して鉛の純度を低下させてしまうと
いった問題も生じない。従って本発明によれば、長期間
の間に即ち経時的に鉛の純度が低下して、ゴム支承装置
の振動減衰機能が低下してしまうといったことを防止で
き、長期に亘って当初の良好な振動減衰機能を維持する
ことができる。In the present invention, the rubber coating layer also uses a non-sulfur vulcanized rubber, so that the sulfur content of the rubber coating layer invades the inside of lead and lowers the purity of lead. Does not occur. Therefore, according to the present invention, it is possible to prevent the purity of lead from decreasing over a long period of time, that is, over time, and to prevent the vibration damping function of the rubber bearing device from deteriorating. The vibration damping function can be maintained.
【００１０】ここで上記ゴム被覆層として過酸化物加
硫，チウラム加硫，キノイド加硫，樹脂加硫の何れかの
ゴムを用いることができる（請求項２）。Here, any of peroxide vulcanization, thiuram vulcanization, quinoid vulcanization and resin vulcanization can be used as the rubber coating layer.
【００１１】[0011]
【実施例】次に本発明の実施例を図面に基いて詳しく説
明する。図１において、１０は例えば橋梁における支承
装置として好適な鉛入りゴム支承装置であって、１２は
その主体を成すゴム支承体である。ゴム支承体１２は、
上補強板（鋼板）１４と下補強板（鋼板）１６とを有す
るとともに、それらの間において複数のゴム層１８と内
部補強板（鋼板）２０とが交互に積層され、それらが一
体に固着された形態をなしている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 10 denotes a lead-containing rubber bearing device suitable as a bearing device in a bridge, for example, and reference numeral 12 denotes a rubber bearing body which forms the main body thereof. The rubber bearing body 12
It has an upper reinforcing plate (steel plate) 14 and a lower reinforcing plate (steel plate) 16, and a plurality of rubber layers 18 and an inner reinforcing plate (steel plate) 20 are alternately laminated between them, and they are integrally fixed. It has a form.
【００１２】２２，２４は鉛入りゴム支承装置１０を上
部構造体，下部構造体に取り付けるための取付プレート
（鋼板）で、それぞれ上補強板１４，下補強板１６にボ
ルト２６にて締結固定されている。Reference numerals 22 and 24 denote mounting plates (steel plates) for mounting the lead-containing rubber bearing device 10 to the upper structure and the lower structure, respectively, which are fastened and fixed to the upper reinforcing plate 14 and the lower reinforcing plate 16 by bolts 26, respectively. ing.
【００１３】ゴム支承体１２の中心部には断面円形の中
空部２８が下端から上端に至る高さで形成されており、
その中空部２８の内部に円柱形状の鉛３０とこれを被覆
する円筒形状のゴム被覆層３２とが充填されている。即
ちこの鉛入りゴム支承装置１０は、中空部２８内部の鉛
３０の外周面とゴム支承体１２の内周面とが円筒形状の
ゴム被覆層３２によって互いに遮断されている。A hollow portion 28 having a circular cross section is formed at the center of the rubber support 12 at a height from the lower end to the upper end.
The hollow portion 28 is filled with a columnar lead 30 and a cylindrical rubber coating layer 32 covering the lead 30. That is, in the lead-containing rubber bearing device 10, the outer peripheral surface of the lead 30 inside the hollow portion 28 and the inner peripheral surface of the rubber bearing body 12 are isolated from each other by the cylindrical rubber coating layer 32.
【００１４】本例ではゴム支承体１２のゴムとして天然
ゴムが用いられ、またその加硫手段として硫黄加硫が用
いられている。一方ゴム被覆層３２については非硫黄加
硫、具体的にはここでは過酸化物加硫のゴムが用いられ
ている。表１のNo.1はそのゴム被覆層３２の具体的な配
合内容の例を示したものである。In this embodiment, natural rubber is used as the rubber of the rubber bearing body 12, and sulfur vulcanization is used as a vulcanizing means. On the other hand, for the rubber coating layer 32, non-sulfur vulcanized, specifically, a peroxide-cured rubber is used here. No. 1 in Table 1 shows an example of specific contents of the rubber coating layer 32.
【００１５】[0015]
【表１】 [Table 1]
【００１６】本例によればゴム支承体１２に含まれる硫
黄分が鉛３０の内部に浸入するといったことがなく、更
にまたゴム被覆層３２にも硫黄分が含まれていないため
に、これによって鉛の純度を低下してしまうといったこ
ともない。According to the present embodiment, the sulfur content contained in the rubber bearing body 12 does not enter the lead 30 and the rubber coating layer 32 contains no sulfur content. There is no reduction in lead purity.
【００１７】従って本例によれば、長期間の間に即ち経
時的に鉛の純度の低下によって振動減衰機能が低下して
しまうといったことがない。即ち長期に亘って当初の良
好な振動減衰機能を維持することができる。Therefore, according to this embodiment, there is no possibility that the vibration damping function is deteriorated due to a decrease in the purity of lead over a long period of time, that is, over time. That is, the initial good vibration damping function can be maintained for a long time.
【００１８】尚、上記ゴム被覆層３２としては上例の過
酸化物加硫以外の他の種々の非硫黄加硫のゴム、例えば
チウラム加硫，キノイド加硫，樹脂加硫等のゴムを用い
ることができる。表１のNo.2，No.3，No.4，No.5はそれ
ぞれチウラム加硫，キノイド加硫，樹脂加硫の場合の具
体的な配合例を表したものである。これらの非硫黄加硫
ゴムを用いた場合においても上記と同様の効果を奏する
ことができる。As the rubber coating layer 32, various non-sulfur vulcanized rubbers other than the above-described peroxide vulcanized, such as thiuram vulcanized, quinoid vulcanized and resin vulcanized, are used. be able to. No. 2, No. 3, No. 4, and No. 5 in Table 1 show specific examples of compounding in the case of thiuram vulcanization, quinoid vulcanization, and resin vulcanization, respectively. Even when these non-sulfur vulcanized rubbers are used, the same effects as described above can be obtained.
【００１９】以上本発明の実施例を詳述したがこれはあ
くまで一例示である。例えば本発明は上記例示した形態
以外の他の様々な形態の鉛入りゴム支承装置に対して適
用することが可能であるなど、その主旨を逸脱しない範
囲において種々変更を加えた形態で構成可能である。The embodiment of the present invention has been described in detail above, but this is merely an example. For example, the present invention can be applied to various types of lead-containing rubber bearing devices other than the above-described embodiments, and can be configured in variously modified forms without departing from the gist thereof. is there.
【図１】本発明の一実施例である鉛入りゴム支承装置を
示す図である。FIG. 1 is a view showing a lead-containing rubber bearing device according to one embodiment of the present invention.
１０ 鉛入りゴム支承装置 １２ ゴム支承体 ２８ 中空部 ３０ 鉛 ３２ ゴム被覆層 DESCRIPTION OF SYMBOLS 10 Lead-containing rubber bearing device 12 Rubber bearing body 28 Hollow part 30 Lead 32 Rubber coating layer
Claims (2)
れる支承装置であって、ゴム支承体に上下方向に設けた
中空部に柱状の鉛を封入して成り、該鉛の変形に基づく
エネルギー吸収によって振動減衰するようになした鉛入
りゴム支承装置において、 前記鉛の外周面と前記ゴム支承体の中空部の内周面との
間に筒状のゴム被覆層を形成して該鉛の外周面を被覆す
るとともに、該ゴム被覆層として非硫黄加硫のゴムを用
いたことを特徴とする鉛入りゴム支承装置。1. A bearing device interposed between an upper structure and a lower structure, wherein a columnar lead is sealed in a hollow portion provided in a vertical direction in a rubber bearing, In a lead-containing rubber bearing device that is configured to attenuate vibration by energy absorption based on deformation, a cylindrical rubber coating layer is formed between an outer peripheral surface of the lead and an inner peripheral surface of a hollow portion of the rubber bearing body. A lead-bearing rubber bearing device characterized in that the outer peripheral surface of the lead is covered by a non-sulfur vulcanized rubber as the rubber coating layer.
て過酸化物加流，チウラム加硫，キノイド加硫，樹脂加
硫の何れかのゴムを用いたことを特徴とする鉛入りゴム
支承装置。2. The lead-containing rubber bearing device according to claim 1, wherein any one of peroxide-cured, thiuram-cured, quinoid-cured and resin-cured rubber is used as the rubber coating layer. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000199809A JP2002021929A (en) | 2000-06-30 | 2000-06-30 | Lead contained rubber bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000199809A JP2002021929A (en) | 2000-06-30 | 2000-06-30 | Lead contained rubber bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002021929A true JP2002021929A (en) | 2002-01-23 |
Family
ID=18697761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000199809A Pending JP2002021929A (en) | 2000-06-30 | 2000-06-30 | Lead contained rubber bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002021929A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481046A (en) * | 2014-12-03 | 2015-04-01 | 上海大学 | Energy dissipation three-dimensional isolation bearing with oblique slide damping |
| KR101788857B1 (en) * | 2007-09-06 | 2017-10-20 | 가부시키가이샤 브리지스톤 | Supporting structure |
-
2000
- 2000-06-30 JP JP2000199809A patent/JP2002021929A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101788857B1 (en) * | 2007-09-06 | 2017-10-20 | 가부시키가이샤 브리지스톤 | Supporting structure |
| CN104481046A (en) * | 2014-12-03 | 2015-04-01 | 上海大学 | Energy dissipation three-dimensional isolation bearing with oblique slide damping |
| CN104481046B (en) * | 2014-12-03 | 2017-06-06 | 上海大学 | A kind of oblique slip damping energy dissipation three-dimensional shock isolation support |
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