JPH07207764A - Layered rubber support having high flexural rigidity - Google Patents
Layered rubber support having high flexural rigidityInfo
- Publication number
- JPH07207764A JPH07207764A JP400694A JP400694A JPH07207764A JP H07207764 A JPH07207764 A JP H07207764A JP 400694 A JP400694 A JP 400694A JP 400694 A JP400694 A JP 400694A JP H07207764 A JPH07207764 A JP H07207764A
- Authority
- JP
- Japan
- Prior art keywords
- laminated rubber
- flanges
- flange
- intermediate flange
- layered rubber
- 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
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】建築構造物の免震或いは床免震、
機械構造物、動吸振器等の支承に関する。[Industrial application] Seismic isolation of building structures or floor isolation,
Support for mechanical structures, dynamic vibration absorbers, etc.
【0002】[0002]
【従来の技術】従来は、図7、図8或いは図9に示すよ
うにゴム層と鋼製板の互層構造を特徴とする積層ゴムが
用いられていた。しかし、この構造では曲げモーメント
Mに対するゴムの曲げ剛性は低く、また底面積に比べて
背丈が低いと剪断剛性が大きく、長周期の振動には適用
出来ず、剪断剛性を低くしようとして、背丈を高くする
と曲げ剛性が欠如して不都合であった。2. Description of the Related Art Conventionally, as shown in FIG. 7, FIG. 8 or FIG. 9, a laminated rubber having an alternating structure of a rubber layer and a steel plate has been used. However, in this structure, the bending rigidity of the rubber against the bending moment M is low, and the shear rigidity is large when the height is low compared to the bottom area, so it cannot be applied to long-period vibration, and the height of the shear is reduced in order to reduce the shear rigidity. If the value is increased, the bending rigidity is lacked, which is inconvenient.
【0003】[0003]
【発明が解決しようとする課題】上述の如く、建築物の
横断面積に対して高さが比較的低く建築物が地震力によ
って曲げ変形を、あまり起こさない建築物では、底面積
と支承の背丈のプロポーションを適切に選べば従来の図
7に示すような積層ゴム支承は有効に振動を吸振する。
建築物の軸方向の曲げ変形が小さいため、建築物が単一
な剛体と見做され地面との剪断振動の挙動をとるからで
ある。しかし建築物の横断面積に対して高さがある程度
以上高くなると振動の挙動が高さの低い建築物にみる剛
体振動とは全く性格の異なったものになる。建築物の横
断面積に比べて高さが高い建築物は一種の板ばね状の挙
動をとる。つまり中央自由支持の不静定梁と同様に見做
され撓み振動のばね定数は、高さのn乗(n>1)に逆
比例して小さくなる。従って小さい外力で大きな撓み振
動を起こす。例えば、振動の伝播速度を30m/sec
と仮に見積もれば70mの高さの建築物の振動周期は
2.5secとなり従来の剪断振動吸収支承では到底免
震出来る範囲内にはない。そこで 本発明では、特に長
周期の固有周期を持つ建築構造物或いは機械構造物、動
吸振器等に応用出来る支承を提供する。As described above, in a building which is relatively low in height with respect to the cross-sectional area of the building and in which the building is less likely to be bent and deformed by seismic force, the bottom area and the height of the bearing are increased. If the proportion of is properly selected, the conventional laminated rubber bearing as shown in FIG. 7 effectively absorbs vibration.
This is because the bending deformation in the axial direction of the building is small, and the building is considered as a single rigid body and behaves in shear vibration with the ground. However, when the height is higher than a certain level with respect to the cross-sectional area of a building, the behavior of vibration becomes completely different from the rigid body vibration seen in a building with a low height. A building whose height is higher than the cross-sectional area of the building behaves like a leaf spring. That is, the spring constant of flexural vibration, which is regarded as in the case of the statically indeterminate beam supported by the center freely, decreases in inverse proportion to the n-th power of the height (n> 1). Therefore, a large bending vibration is generated with a small external force. For example, the propagation speed of vibration is 30m / sec
Estimating that, the vibration period of a building with a height of 70 m is 2.5 sec, which is far below the range where conventional shear vibration absorption bearings can be isolated. Therefore, the present invention provides a bearing that can be applied to a building structure, a mechanical structure, a dynamic vibration absorber, or the like, which has a long natural period.
【0004】[0004]
【課題を解決するための手段】上下のフランジ間に中間
フランジを設けフランジ間は鋼板とゴムを互層して積層
ゴムとし、該積層ゴムの外周に沿ってフランジ間に、鉛
直方向に複数本の支持機構又はばね機構kv を配置して
支承を形成する。この様子を図3に示す。また、中間フ
ランジとフランジ間の支持又はばねは、例えば図4、図
5に示すように複数段にすることも可能である。ばね手
段としては、上側のフランジの外周点と、その内側即ち
積層ゴムの外周点を止点として下側のフランジの内側、
即ち積層ゴムの外周点とその外側、フランジの外周近く
の2点にプーリを設け、前記2点の止点に、前記プーリ
を介してクロスして、ワイヤロープをターンバックルで
緊張するような、ワイヤによる連続したブレース構造と
してもよいし、普通のつる巻きばねでもよい。[Means for Solving the Problems] An intermediate flange is provided between upper and lower flanges to form a laminated rubber by alternately laminating a steel plate and rubber between the flanges, and a plurality of vertically extending rubbers are provided along the outer periphery of the laminated rubber between the flanges. A support mechanism or spring mechanism k v is arranged to form the bearing. This state is shown in FIG. Further, the intermediate flange and the support or spring between the flanges may have a plurality of stages as shown in FIGS. 4 and 5, for example. As the spring means, the outer peripheral point of the upper flange and the inner side thereof, that is, the outer peripheral point of the laminated rubber as the stop point, the inner side of the lower flange,
That is, pulleys are provided at the outer peripheral point of the laminated rubber and its outer side, and at two points near the outer periphery of the flange, and the wire rope is tensioned with a turnbuckle by crossing the two stop points through the pulley. The wire may have a continuous brace structure made of wire, or may be an ordinary spiral spring.
【0005】[0005]
【作用】従来の積層ゴムでは、曲げ剛性が低いため座屈
荷重の低下を防ぐことが出来ず軸力を支えきれなかっ
た。しかし支持機構又はばね機構を付与した本発明の支
承では、中間フランジを通して曲げモーメントを打ち消
すため、全体の曲げ剛性が高まり座屈荷重の低下を防ぐ
ことが出来る。図9は従来の積層ゴムで高さがある場合
の変形図で座屈を起こそうとしているところを示す。図
10は高さがある積層ゴムに、曲げ剛性を高める支持剤
或いはばね剤を配した時の変形図である。In the conventional laminated rubber, since the bending rigidity is low, it is not possible to prevent the buckling load from decreasing and it is impossible to support the axial force. However, in the bearing of the present invention provided with the support mechanism or the spring mechanism, since the bending moment is canceled through the intermediate flange, the overall bending rigidity is increased and the buckling load can be prevented from lowering. FIG. 9 is a modified view of a conventional laminated rubber having a height and shows a state where buckling is about to occur. FIG. 10 is a modified view of a laminated rubber having a height, in which a support agent or a spring agent for enhancing bending rigidity is arranged.
【0006】図6はばね手段としてワイヤによる連続し
たブレース構造部分の拡大図で、その変形例を示してい
る。ワイヤによる連続したブレース構造のため、水平変
形に伴う曲げ変形を吸収する一方、ワイヤは一体となっ
ているので、水平変形時も全体長は変化せず剪断剛性は
殆どない。引張方向に対しては鋼製のワイヤを用いれば
極めて高い剛性を持ち、積層ゴムの曲げ剛性を充分に高
めることが出来る。圧縮方向については、剛性は期待出
来ないが、反対側に配置したワイヤブレースの引張剛性
が高いので問題はない。FIG. 6 is an enlarged view of a continuous brace structure portion using a wire as a spring means and shows a modification thereof. The continuous brace structure of the wire absorbs bending deformation due to horizontal deformation, while the wire is integrated, the overall length does not change during horizontal deformation and there is almost no shear rigidity. If a steel wire is used in the pulling direction, it has extremely high rigidity, and the bending rigidity of the laminated rubber can be sufficiently increased. In the compression direction, rigidity cannot be expected, but there is no problem because the wire brace arranged on the opposite side has high tensile rigidity.
【0007】[0007]
【実施例】図1に連続したワイヤブレース4を、ばね手
段として応用した一例を示す。上下フランジ1の中間に
中間フランジ1’を設け、上部フランジ1と中間フラン
ジ1’及び中間フランジ1’と下部フランジ1の間に
は、鋼板とゴムを互層した積層ゴム2を形成する。積層
ゴムの外周上、中心に向かって放斜状に8本、外周の止
点6から内周の止点6までクロスさせながら、ターンバ
ックル3とプーリ5を介してワイヤブレース材4を緊張
する。緊張するワイヤブレース4は8本に限定しない。FIG. 1 shows an example in which a continuous wire brace 4 is applied as spring means. An intermediate flange 1 ′ is provided in the middle of the upper and lower flanges 1, and between the upper flange 1 and the intermediate flange 1 ′ and between the intermediate flange 1 ′ and the lower flange 1, a laminated rubber 2 in which a steel plate and rubber are laminated alternately is formed. On the outer circumference of the laminated rubber, eight wires are radiated toward the center from the outer peripheral stop point 6 to the inner peripheral stop point 6 while tensioning the wire brace member 4 via the turnbuckle 3 and the pulley 5. . The number of tensioned wire braces 4 is not limited to eight.
【0008】中間フランジ1’は、図1、3では1枚で
あるが、図4では2枚、図5では3枚の例を示し中間フ
ランジの数に制限はない。又、ばね手段はワイヤブレー
ス4に限らず、つる巻ばねでも可能である。The number of intermediate flanges 1'is one in FIGS. 1 and 3, but is two in FIG. 4 and three in FIG. 5, and the number of intermediate flanges is not limited. Further, the spring means is not limited to the wire brace 4 and can be a spiral spring.
【0009】図11には支持剤として、ボールベアリン
グを用いた一例を示す。この例では2段の積層ゴム2の
中間板1’より、ボールベアリングを4個取りつけてい
る。FIG. 11 shows an example in which a ball bearing is used as the support agent. In this example, four ball bearings are attached from the intermediate plate 1'of the laminated rubber 2 in two stages.
【0010】又、図12に示すように、積層ゴムの厚さ
は一定である必要はなく、又、全段にわたって、支持
材、或いはばね材が入っていなくてもよい。Further, as shown in FIG. 12, the thickness of the laminated rubber does not have to be constant, and the supporting material or the spring material may not be provided in all stages.
【0011】[0011]
【発明の効果】本発明の効果は、従来の積層ゴム支承に
比べて、高い鉛直剛性と低い剪断剛性を犠牲にすること
なく、高い曲げ剛性を付与した、高曲げ剛性積層ゴム支
承を提供する。The effect of the present invention is to provide a high flexural rigidity laminated rubber bearing which imparts high flexural rigidity without sacrificing high vertical rigidity and low shear rigidity as compared with the conventional laminated rubber bearing. .
【図1】本発明の実施例の側面図である。FIG. 1 is a side view of an embodiment of the present invention.
【図2】図1のA−A断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図3】他のばね手段を用いた中間フランジ1枚の図で
ある。FIG. 3 is a view of one intermediate flange using another spring means.
【図4】中間フランジを2枚用いた図である。FIG. 4 is a diagram in which two intermediate flanges are used.
【図5】中間フランジを3枚用いた図である。FIG. 5 is a diagram in which three intermediate flanges are used.
【図6】ワイヤブレース材が作動している部分拡大図で
ある。FIG. 6 is a partially enlarged view of the wire brace member in operation.
【図7】従来の積層ゴム支承の図で(a)は上面図を
(b)は側面図を示す。FIG. 7 is a diagram of a conventional laminated rubber bearing, in which (a) is a top view and (b) is a side view.
【図8】従来の積層ゴム支承に曲げモーメントMが作用
した図である。FIG. 8 is a diagram in which a bending moment M acts on a conventional laminated rubber bearing.
【図9】従来の積層ゴム支承に軸力と水平力が作用した
図である。FIG. 9 is a diagram in which an axial force and a horizontal force act on a conventional laminated rubber bearing.
【図10】本発明の高曲げ剛性積層ゴム支承に、軸力と
水平力が作用した図である。FIG. 10 is a view in which an axial force and a horizontal force act on the high bending rigidity laminated rubber bearing of the present invention.
【図11】(a)支持材として、ボールベアリングを用
いた高曲げ剛性積層ゴム支承の側面図である。 (b)図11(a)のB−B断面図である。FIG. 11 (a) is a side view of a high flexural rigidity laminated rubber bearing using a ball bearing as a supporting member. (B) It is a BB sectional view of FIG.
【図12】厚みの異なった3段積層ゴム支承の上段と下
段に、支持機構としてボールベアリングを配した例であ
る。FIG. 12 is an example in which ball bearings are arranged as a support mechanism on the upper and lower stages of three-stage laminated rubber bearings having different thicknesses.
1・・・上下フランジ、1’・・・中間フランジ、2・
・・積層ゴム、3・・・ターンバックル、4・・・ワイ
ヤブレース、5・・・プーリ、6・・・止点、7・・・
つる巻きばね、8・・・ボールベアリング1 ... Top and bottom flange, 1 '... Intermediate flange, 2 ...
..Laminated rubber, 3 ... Turnbuckle, 4 ... Wire brace, 5 ... Pulley, 6 ... Stop point, 7 ...
Spiral spring, 8 ... Ball bearing
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 俊一 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 有田 友彦 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 小鹿 紀英 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 (72)発明者 佐々木 勝康 東京都港区元赤坂1丁目2番7号 鹿島建 設株式会社内 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Shunichi Yamada 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Tomohiko Arita 1-2-7 Moto-Akasaka, Minato-ku, Tokyo No. Kashima Construction Co., Ltd. (72) Inventor Kihide Oka 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Katsuyasu Sasaki 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd.
Claims (5)
け、フランジ間は鋼板とゴムを互層して積層ゴムとし、
該積層ゴムの外周に沿ってフランジ間に、鉛直方向に複
数の支持機構又はばね機構を配置してなることを特徴と
する高曲げ剛性積層ゴム支承。1. An intermediate flange is provided between upper and lower flanges, and a steel plate and a rubber are alternately laminated between the flanges to form a laminated rubber,
A laminated rubber bearing having high bending rigidity, characterized in that a plurality of supporting mechanisms or spring mechanisms are arranged vertically between the flanges along the outer periphery of the laminated rubber.
はばね機構を複数段にしたことを特徴とする請求項1記
載の高曲げ剛性積層ゴム支承。2. The high bending rigidity laminated rubber bearing according to claim 1, wherein the intermediate flange and the supporting mechanism between the flanges or the spring mechanism have a plurality of stages.
ブレース構造としたことを特徴とする請求項1又は2記
載の高曲げ剛性積層ゴム支承。3. The high bending rigidity laminated rubber bearing according to claim 1, wherein the spring means has a continuous brace structure formed of a wire.
ことを特徴とする請求項1又は2記載の高曲げ剛性積層
ゴム支承。4. The high bending rigidity laminated rubber bearing according to claim 1, wherein a helical spring is used as the spring means.
用したことを特徴とする請求項1又は2記載の高曲げ剛
性積層ゴム支承。5. The high bending rigidity laminated rubber bearing according to claim 1 or 2, wherein a ball bearing is used as the support mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6004006A JP2730475B2 (en) | 1994-01-19 | 1994-01-19 | High bending rigid laminated rubber bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6004006A JP2730475B2 (en) | 1994-01-19 | 1994-01-19 | High bending rigid laminated rubber bearing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07207764A true JPH07207764A (en) | 1995-08-08 |
JP2730475B2 JP2730475B2 (en) | 1998-03-25 |
Family
ID=11572903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6004006A Expired - Lifetime JP2730475B2 (en) | 1994-01-19 | 1994-01-19 | High bending rigid laminated rubber bearing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2730475B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102619283A (en) * | 2012-04-17 | 2012-08-01 | 吕西林 | Lead core laminated rubber support seat capable of bearing tensile force |
CN112814190A (en) * | 2021-01-29 | 2021-05-18 | 广州大学 | Bending energy-consuming type cable system support |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104452999B (en) * | 2013-09-23 | 2016-08-10 | 建研科技股份有限公司 | Self-displacement shock insulation trench system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62101763A (en) * | 1985-10-28 | 1987-05-12 | 鹿島建設株式会社 | Earthquake damping apparatus |
JPS63184807U (en) * | 1987-05-18 | 1988-11-28 | ||
JPH0211905U (en) * | 1988-07-06 | 1990-01-25 | ||
JPH0277343U (en) * | 1988-12-01 | 1990-06-13 |
-
1994
- 1994-01-19 JP JP6004006A patent/JP2730475B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62101763A (en) * | 1985-10-28 | 1987-05-12 | 鹿島建設株式会社 | Earthquake damping apparatus |
JPS63184807U (en) * | 1987-05-18 | 1988-11-28 | ||
JPH0211905U (en) * | 1988-07-06 | 1990-01-25 | ||
JPH0277343U (en) * | 1988-12-01 | 1990-06-13 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102619283A (en) * | 2012-04-17 | 2012-08-01 | 吕西林 | Lead core laminated rubber support seat capable of bearing tensile force |
CN112814190A (en) * | 2021-01-29 | 2021-05-18 | 广州大学 | Bending energy-consuming type cable system support |
Also Published As
Publication number | Publication date |
---|---|
JP2730475B2 (en) | 1998-03-25 |
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