JPH0797828A - Lead-sealed laminated rubber support - Google Patents
Lead-sealed laminated rubber supportInfo
- Publication number
- JPH0797828A JPH0797828A JP26585393A JP26585393A JPH0797828A JP H0797828 A JPH0797828 A JP H0797828A JP 26585393 A JP26585393 A JP 26585393A JP 26585393 A JP26585393 A JP 26585393A JP H0797828 A JPH0797828 A JP H0797828A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- laminated rubber
- pure
- laminated
- plug
- 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
- Vibration Prevention Devices (AREA)
- Bridges Or Land Bridges (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【0001】A. 発明の目的 (1) 産業上の利用分野 この発明は、積層ゴム体内に鉛体を封入し、荷重を支持
するとともに地震動等の振動エネルギーを鉛体のせん断
変形を利用して吸収する免震支持装置いわゆる鉛封入積
層ゴム支承に関する。A. Object of the invention (1) Industrial field of application The present invention utilizes a shear deformation of a lead body to enclose a lead body in a laminated rubber body to support a load and to generate vibration energy such as seismic motion. Absorbing seismic isolation support device So-called lead-containing laminated rubber bearing.
【0002】(2) 従来の技術 この種の鉛封入積層ゴム支承は、一般に、ゴム弾性層と
補強板とが交互に鉛直方向に積層されてなる積層ゴム体
内に柱状の鉛体いわゆる鉛プラグを封入された構成を採
る。しかして、該鉛プラグは周囲の積層ゴム体によって
拘束され、支承全体の水平変位に伴うせん断変形を受け
ることにより、所期のエネルギー吸収性能を発揮するも
のである。(2) Conventional Technology In this type of lead-filled laminated rubber bearing, generally, a columnar lead body, a so-called lead plug, is provided in a laminated rubber body in which rubber elastic layers and reinforcing plates are alternately laminated in the vertical direction. Take the enclosed configuration. Then, the lead plug is constrained by the surrounding laminated rubber body, and exerts the desired energy absorption performance by being subjected to shear deformation due to horizontal displacement of the entire bearing.
【0003】しかしながら、従来のこの鉛封入積層ゴム
支承の構造によっては、鉛プラグは一般的に剛性が小さ
く、常時の風荷重あるいは微弱地震力に対しても塑性せ
ん断変形を受け、初期弾性をもって抵抗する外力は小さ
な範囲内で極めて限られたものとなる。このため、鉛プ
ラグの剛性を高めるべく、種々の試みがなされている。
すなわち、鉛プラグを合金化することは、その一提案で
あるが、純鉛の塑性及び硬度を維持して所定の特性を得
ることは困難である。また、仮に所定の剛性の合金が得
られたとしても、その剛性が高いことから、当該鉛プラ
グの外側の積層ゴム体との接触部で長期の使用によりゴ
ム弾性体を損傷させるものとなる。However, depending on the structure of the conventional lead-encapsulated laminated rubber bearing, the lead plug generally has low rigidity, and is subject to plastic shear deformation against constant wind load or weak seismic force, and resistance with initial elasticity. The applied external force is extremely limited within a small range. Therefore, various attempts have been made to increase the rigidity of the lead plug.
That is, alloying a lead plug is one of the proposals, but it is difficult to maintain the plasticity and hardness of pure lead and obtain predetermined characteristics. Even if an alloy having a predetermined rigidity is obtained, since the rigidity is high, the rubber elastic body will be damaged by the long-term use at the contact portion with the laminated rubber body outside the lead plug.
【0004】(3) 発明が解決しようとする問題点 本発明は上記実情に鑑み、従来の鉛封入積層ゴム支承の
欠点を解消すべくなされたものであり、接触部でのゴム
の損傷を招くことなく、所望の剛性に調整された鉛プラ
グを有する鉛封入積層ゴム支承を得ることを目的とす
る。(3) Problems to be Solved by the Invention In view of the above-mentioned circumstances, the present invention has been made to solve the drawbacks of the conventional lead-sealed laminated rubber bearing, which causes damage to the rubber at the contact portion. The purpose of the present invention is to obtain a lead-sealed laminated rubber bearing having a lead plug adjusted to a desired rigidity without using a lead-containing laminated rubber bearing.
【0005】B.発明の構成 (1) 問題点を解決するための手段 本発明の鉛封入積層ゴム支承は上記目的を達成するた
め、次の構成を採る。すなわち、水平状に配されるゴム
弾性層と補強板とが交互に鉛直方向に積層されてなる積
層ゴム体内に鉛体を主体とする塑性変形部が柱状に封入
された鉛封入積層ゴム支承において、前記塑性変形部
は、円柱状をなし、純鉛体からなる鉛プラグの内部に、
純鉛よりも硬度の大きい塑性材料よりなる心棒体が挿入
されてなることを特徴とする。B. Structure of the Invention (1) Means for Solving Problems The lead-containing laminated rubber bearing of the present invention has the following structure in order to achieve the above object. That is, in a lead-filled laminated rubber bearing in which a plastically deformable portion mainly composed of a lead body is column-shaped enclosed in a laminated rubber body in which horizontally arranged rubber elastic layers and reinforcing plates are alternately laminated in a vertical direction. , The plastically deformed portion has a columnar shape, and inside the lead plug made of pure lead,
It is characterized in that a mandrel made of a plastic material having a hardness higher than that of pure lead is inserted.
【0006】(2) 作用 常時においては、積層ゴム体は上部構造の荷重を下部構
造に伝達支持する。塑性変形部は荷重支持には実際的に
関与しない。そして、温度差に基づく上部構造の緩慢な
伸縮変位に対しては、塑性変形部はその水平変位に追従
し、積層ゴム体の水平弾性特性を損なうことがない。ま
た、風荷重あるいは微弱地震力に対しては、塑性変形部
の鉛体は初期弾性により抵抗し、水平方向の変位を阻止
する。すなわち、本塑性変形部は剛性が調整されている
ので、所期の初期弾性を示し、所定の大きさの風荷重・
微弱地震力を確実に阻止する。地震時においては、強制
振動力に対して上下部構造が互いに水平方向に急激に相
対変位するが、積層ゴム体はこの振動変位に追従すると
ともに、その水平ばね特性によりこの振動周期の上部構
造への伝達を長周期化し、上部構造の免震作用をなす。
また、積層ゴム体内の塑性変形部の鉛体の塑性変形で地
震エネルギーを吸収し、上部構造の変位加速度を減衰さ
せるとともに相対変位を抑制し、減衰作用をなす。この
塑性変形部の変形において、積層ゴム体は鈍鉛体に接す
るので、両者の当接は緩衝化され、ゴム弾性層への損傷
はない。(2) Action In normal operation, the laminated rubber body transmits and supports the load of the upper structure to the lower structure. The plastically deformed part does not actually participate in load bearing. Then, with respect to the slow expansion and contraction displacement of the upper structure due to the temperature difference, the plastically deformed portion follows the horizontal displacement and does not impair the horizontal elastic characteristics of the laminated rubber body. Moreover, the lead body in the plastically deformed portion resists the horizontal displacement against the wind load or the weak seismic force due to the initial elasticity. In other words, since the rigidity of this plastically deformed part is adjusted, it exhibits the desired initial elasticity, and a predetermined amount of wind load
Prevents weak seismic force. At the time of an earthquake, the upper and lower structures are suddenly displaced relative to each other in the horizontal direction against the forced vibration force, but the laminated rubber body follows this vibration displacement and, due to its horizontal spring characteristic, moves to the upper structure of this vibration cycle. It makes the transmission of the period longer and acts as a seismic isolation function for the superstructure.
In addition, the plastic deformation of the lead body in the plastically deformed portion of the laminated rubber body absorbs seismic energy, damps the displacement acceleration of the superstructure, suppresses relative displacement, and performs a damping action. In this deformation of the plastically deformed portion, the laminated rubber body contacts the blunt lead body, so that the contact between the two is buffered and the rubber elastic layer is not damaged.
【0007】(3) 実施例 本発明の鉛封入積層ゴム支承の実施例を図面に基づいて
説明する。 (実施例の構成)図1及び図2はその一実施例を示す。
図において、Gは建築構造物としての上部構造、Bは該
上部構造Gを支持する基礎としての下部構造である。(3) Example An example of the lead-filled laminated rubber bearing of the present invention will be described with reference to the drawings. (Structure of Embodiment) FIGS. 1 and 2 show an embodiment thereof.
In the figure, G is an upper structure as a building structure, and B is a lower structure as a foundation for supporting the upper structure G.
【0008】本実施例の鉛封入積層ゴム支承Sは、積層
ゴム体1と該積層ゴム体1内に封入された鉛体を主体と
する塑性変形部2とを、上下の取付け板3,4によって
一体的に挟着したものであり、上部構造Gと下部構造B
との間に介装される。The lead-encapsulated laminated rubber bearing S of this embodiment includes a laminated rubber body 1 and a plastically deformable portion 2 mainly composed of a lead body enclosed in the laminated rubber body 1, and upper and lower mounting plates 3 and 4. The upper structure G and the lower structure B are integrally sandwiched by
Is interposed between and.
【0009】以下、各部の細部の構成を説明する。積層ゴム体1 積層ゴム体1は外形形状において円柱状をなし、また、
その内部には、その中心部に鉛直方向に貫通する円孔1
0が形成される。積層ゴム体1の環状部は、ゴム弾性層
12と補強板13とが交互に配された構成を採り、これ
らは加硫接着により強固に一体化される。しかして、積
層ゴム体1はこのゴム弾性層12と補強板13とによ
り、上載荷重Pに対しては大きな剛性を示し、横荷重Q
に対してゴム弾性層12による可撓性を示す。該積層ゴ
ム体1の断面積は、上載荷重Pを支持しえるように決定
される。ゴム弾性層12のゴム量は同一の水平せん断剛
性を得るべく好ましくは等量とされる。The detailed structure of each part will be described below. Laminated Rubber Body 1 The laminated rubber body 1 has a columnar outer shape, and
Inside, there is a circular hole 1 that penetrates vertically through the center of the hole.
0 is formed. The annular portion of the laminated rubber body 1 has a structure in which the rubber elastic layers 12 and the reinforcing plates 13 are alternately arranged, and these are firmly integrated by vulcanization adhesion. Due to the rubber elastic layer 12 and the reinforcing plate 13, the laminated rubber body 1 exhibits a large rigidity with respect to the top load P and the lateral load Q.
On the other hand, the flexibility due to the rubber elastic layer 12 is shown. The cross-sectional area of the laminated rubber body 1 is determined so that the top load P can be supported. The rubber amount of the rubber elastic layer 12 is preferably equal to obtain the same horizontal shear rigidity.
【0010】補強板13は、環状体をなし、本実施例で
は薄鋼板より形成されるが、帆布、合成樹脂板等を除外
するものではない。その外径は所要のかぶりを存して積
層ゴム体1の外径よりも小さく、また、その内径も若干
のかぶりをもって内孔10の径よりも大きくされる。な
お、この内側のかぶりは必須のものではなく、直接円孔
10に臨む態様を採りうる。The reinforcing plate 13 has an annular shape and is formed of a thin steel plate in this embodiment, but a canvas, a synthetic resin plate or the like is not excluded. Its outer diameter is smaller than the outer diameter of the laminated rubber body 1 with a required fogging, and its inner diameter is also made larger than the diameter of the inner hole 10 with a slight fogging. It should be noted that this inner fogging is not indispensable and a mode in which it directly faces the circular hole 10 can be adopted.
【0011】塑性変形部2 塑性変形部2は、本実施例において特徴ある構成を採
る。すなわち、該塑性変形部2は、鉛プラグ15と該鉛
プラグ15内に挿入された塑性材料からなる心棒体16
とからなり、一体となって円柱状をなすとともに円孔1
0内に密接して封入される。 Plastic Deformation Portion 2 The plastic deformation portion 2 has a characteristic structure in this embodiment. That is, the plastically deformable portion 2 includes a lead plug 15 and a mandrel body 16 made of a plastic material inserted in the lead plug 15.
And has a cylindrical shape as a unit and a circular hole 1
Closely enclosed in 0.
【0012】鉛プラグ15は純鉛よりなる。純鉛は、密
度が11.36、融点が327.4℃を示し、機械的性
質としては、弾性率13,631MPa、弾性限1.66
MPa、引張強さ14MPa、伸び40〜50%、圧縮強さ
49MPa、硬さ3〜7HBSを示す。このように、純鉛
は展延性に富み、容易に塑性変形をうける。The lead plug 15 is made of pure lead. Pure lead has a density of 11.36, a melting point of 327.4 ° C., and mechanical properties include an elastic modulus of 13,631 MPa and an elastic limit of 1.66.
It shows MPa, tensile strength of 14 MPa, elongation of 40 to 50%, compressive strength of 49 MPa, and hardness of 3 to 7 HBS. Thus, pure lead is highly malleable and is easily plastically deformed.
【0013】心棒体16は塑性材料からなり、大きな外
力により塑性変形を起こす金属材料から適宜のものが選
択される。そのような素材として本実施例においては、
鉛合金が好ましいものとして使用される。鉛合金として
Pb−Sb系、Pb−Sn系あるいはPb−Sb−Sn
系合金が適用される。このうち、はんだはSb−Sn合
金中に含まれ、その特性が明確なものであり、好ましい
ものとして使用される。The mandrel 16 is made of a plastic material, and an appropriate material is selected from a metal material that is plastically deformed by a large external force. As such a material, in this embodiment,
Lead alloys are used as preferred. As a lead alloy, Pb-Sb system, Pb-Sn system or Pb-Sb-Sn
A system alloy is applied. Among these, solder is contained in the Sb-Sn alloy, its characteristics are clear, and it is used as a preferable one.
【0014】上下部取付け板3,4 上下部取付け板3,4は、ともに所定厚の円板状の鋼板
よりなる。上部取付け板3においては、その縁部にアン
カー取付け用のねじ孔18が円周方向に複数箇所(本実
施例では8)にわたって開設され、該ねじ孔18にアン
カー鋼棒19が螺合される。下部取付け板4において
は、その縁部にアンカー取付け用のねじ孔20が開設さ
れ、該ねじ孔20にアンカー鋼棒21が螺合される。ア
ンカー鋼棒19,21を溶着する場合においては、ねじ
孔18,20は省略されうる。 Upper and Lower Mounting Plates 3 and 4 Both upper and lower mounting plates 3 and 4 are made of disc-shaped steel plates having a predetermined thickness. On the edge of the upper mounting plate 3, screw holes 18 for attaching an anchor are provided at a plurality of positions (8 in this embodiment) in the circumferential direction at the edge thereof, and anchor steel rods 19 are screwed into the screw holes 18. . In the lower mounting plate 4, a screw hole 20 for anchor attachment is formed in the edge portion thereof, and an anchor steel rod 21 is screwed into the screw hole 20. When welding the anchor steel rods 19 and 21, the screw holes 18 and 20 can be omitted.
【0015】本実施例の鉛封入積層ゴムダンパーSは上
部構造Gと下部構造Bとの間に介装設置される。すなわ
ち、下部構造Bは例えば地盤に設置されるコンクリート
基礎であり、上部構造Gは全体として剛性を持つ中高層
建物であり、本鉛封入積層ゴムダンパーSはこの上部構
造Gの荷重を支持する。また、本鉛封入積層ゴムダンパ
ーSは断面が円形であるので、無方向性を示し、設置方
向は自在である。The lead-filled laminated rubber damper S of this embodiment is installed between the upper structure G and the lower structure B. That is, the lower structure B is, for example, a concrete foundation installed on the ground, the upper structure G is a medium-high-rise building having rigidity as a whole, and the lead-sealed laminated rubber damper S supports the load of the upper structure G. Moreover, since the lead-containing laminated rubber damper S has a circular cross section, it exhibits non-directionality and can be installed in any direction.
【0016】(実施例の作用・効果)この実施例の鉛封
入積層ゴム支承Sの作用を図3に基づいて説明する。常
時においては、積層ゴム体1は上部構造Gの荷重Pを下
部構造Bに伝達支持する。塑性変形部2は荷重支持には
実際的に関与しない。そして、温度差に基づく上部構造
の緩慢な伸縮変位に対しては、塑性変形部2はその水平
変位に追従し、積層ゴム体1の水平弾性特性を損なうこ
とがない。また、風荷重あるいは微弱地震力qに対して
は、塑性変形部2は初期弾性により抵抗し、水平方向の
変位を阻止する。すなわち、本塑性変形部2は剛性が調
整されているので、所期の初期弾性を示し、所定の大き
さの風荷重・微弱地震力を確実に阻止する。(Operation / Effect of Embodiment) The operation of the lead-encapsulated laminated rubber bearing S of this embodiment will be described with reference to FIG. At all times, the laminated rubber body 1 transmits and supports the load P of the upper structure G to the lower structure B. The plastic deformation portion 2 does not actually participate in load bearing. Then, with respect to the slow expansion and contraction displacement of the upper structure due to the temperature difference, the plastic deformation portion 2 follows the horizontal displacement and does not impair the horizontal elastic characteristic of the laminated rubber body 1. Further, against the wind load or the weak seismic force q, the plastic deformation portion 2 resists by the initial elasticity and prevents the displacement in the horizontal direction. That is, since the rigidity of the plastically deformable portion 2 is adjusted, it exhibits desired initial elasticity and reliably blocks wind load and weak seismic force of a predetermined magnitude.
【0017】地震時においては、強制振動力Qに対して
上下部構造G,Bが互いに水平方向に急激に相対変位す
るが、積層ゴム体1はこの振動変位に追従するととも
に、その水平ばね特性によりこの振動周期の上部構造G
への伝達を長周期化し、上部構造Gの免震作用をなす。
また、積層ゴム体1内の塑性変形部2の塑性変形で地震
エネルギーを吸収し、上部構造Gの変位加速度を減衰さ
せるとともに相対変位を抑制し、減衰作用をなす。すな
わち、図3において、上部構造Gはイ方向へ変位し、こ
れに伴い本鉛封入積層ゴム支承Sも全体的にせん断変形
を受け、塑性変形部2においては鉛プラグ15及び心棒
体16はともにせん断力による塑性変形を受け、イ方向
への変位を制動する。続いて、上部構造Gはイ方向と逆
方向に変位するが、同様に塑性変形部2の塑性変形によ
り地震エネルギーを吸収し、この変位を制動する。この
変位は周期的であり、塑性変形部2のエネルギー吸収作
用により速やかに振動を減衰させる。At the time of an earthquake, the upper and lower structures G and B are suddenly displaced relative to each other in the horizontal direction with respect to the forced vibration force Q. The laminated rubber body 1 follows this vibration displacement and its horizontal spring characteristics. By this superstructure G of this vibration period
The transmission of the superstructure is made longer and seismic isolation of superstructure G is achieved.
Further, the plastic deformation of the plastic deformation portion 2 in the laminated rubber body 1 absorbs seismic energy, damps the displacement acceleration of the superstructure G, suppresses relative displacement, and performs a damping action. That is, in FIG. 3, the superstructure G is displaced in the direction a, and along with this, the lead-sealed laminated rubber bearing S is also subjected to shear deformation as a whole, and in the plastic deformation portion 2, the lead plug 15 and the mandrel body 16 are both It receives plastic deformation due to shearing force and damps displacement in the direction a. Subsequently, the superstructure G is displaced in the direction opposite to the direction a, but similarly, the plastic deformation of the plastic deformation portion 2 absorbs the seismic energy and brakes this displacement. This displacement is periodic, and the energy is absorbed by the plastically deformable portion 2 to quickly damp the vibration.
【0018】この塑性変形部2の変形において、積層ゴ
ム体1は鉛プラグ15なかんずく純鉛体に接するので、
両者の当接は緩衝化され、ゴム弾性層12への損傷はな
い。In this deformation of the plastically deformable portion 2, the laminated rubber body 1 contacts the lead plug 15, especially the pure lead body,
The contact between the two is buffered, and the rubber elastic layer 12 is not damaged.
【0019】本実施例の鉛封入積層ゴム支承Sによれ
ば、塑性変形部2は所期の剛性に調整されたものとなっ
ているので、設計仕様に伴う所期のエネルギー吸収特性
を発揮し、設計の標準化が達成される。また、塑性変形
部2と周辺の積層ゴム体1のゴム弾性層12とは純鉛体
を介して極力柔軟な当接状態となっているので、長期の
使用によってもゴム弾性層12への損傷は防止され、性
能の劣化がない。According to the lead-encapsulated laminated rubber bearing S of this embodiment, since the plastically deformable portion 2 is adjusted to the desired rigidity, it exhibits desired energy absorption characteristics according to the design specifications. , Design standardization is achieved. Further, since the plastically deformable portion 2 and the rubber elastic layer 12 of the peripheral laminated rubber body 1 are in a contact state as soft as possible through the pure lead body, damage to the rubber elastic layer 12 even after long-term use. Is prevented and there is no performance degradation.
【0020】叙上の実施例では、塑性変形部2におい
て、心棒体16を鉛プラグ15の中心部にのみ配した
が、図4及び図5に示すように、複数の心棒体16を配
する態様を採ってもよい。この態様の塑性変形部2Aに
おいては、心棒体16は先の図例の実施例の心棒体16
の径よりも小径とされる。複数の心棒体16の個数に格
別の制限はなく、また、鉛プラグ16の中心部に配する
こともできる。In the above-described embodiment, the mandrel 16 is arranged only in the center of the lead plug 15 in the plastically deformable portion 2. However, as shown in FIGS. 4 and 5, a plurality of mandrels 16 are arranged. Aspects may be adopted. In the plastically deformable portion 2A of this aspect, the mandrel body 16 is the mandrel body 16 of the embodiment shown in the previous figure.
The diameter is smaller than the diameter of. There is no particular limitation on the number of the plural mandrel bodies 16, and the mandrel bodies 16 may be arranged at the center of the lead plug 16.
【0021】図6は更に他の塑性変形部2Bを示す。こ
の態様の塑性変形部2Bにおける鉛プラグ15は、所定
厚さの鉛体25と薄板状の隔壁板26とが交互に積層さ
れた積層体からなる。そして、鉛体25と隔壁板26と
は中央に円孔10が開設され、該円孔10内に前述した
心棒体16が装入される。もっと詳しくは、鉛体25は
純鉛よりなり、所定厚さの円板体をなし、既製のものが
使用される。隔壁板26は所定の剛性を有する薄円板体
をなし、その素材として、鋼、銅、メッキ(銅、錫)
鋼、銅合金、金属メッシュ(金属ワイヤメッシュ、エキ
スパンドメタル)、FRPが好ましいものとして選択さ
れる。鉛板25と隔壁板26とは当接(非接着)状態あ
るいは接着状態のいずれの構造も採りうる。接着構造と
して、隔壁板26の表面を粗面となし、鉛板25に食い
込み把持されたもの、あるいは、鉛板25と隔壁板26
とを接着剤を介して接合するもの、等がある。この鉛プ
ラグの積層構造において、鋳込みによる一体成形方法を
採ることができる。すなわち、隔壁板26には1又は複
数の貫通穴が開設され、隔壁板26を鋳型内において所
定のスペーサを介して所定間隔に保持され、当該鋳型に
鉛の溶湯を流し込み、該鋳型より取り出して成形される
ものである。鉛体は隔壁板26の貫通穴を介して一体的
に連なる。この場合においても、隔壁板16と鉛体とは
接着状態あるいは非接着状態の両態様を採りうるもので
あって、接着状態においては隔壁板26は粗面とされ、
非接着状態においては隔壁板26の表面は平滑かつ剥離
剤が塗布される。この積層構造の鉛プラグ15を有する
塑性変形部によれば、隔壁板26を設けたことにより、
鉛体鈍せん断変形が促進される。FIG. 6 shows still another plastically deformable portion 2B. The lead plug 15 in the plastically deformable portion 2B of this aspect is formed of a laminated body in which a lead body 25 having a predetermined thickness and a thin partition wall plate 26 are alternately laminated. A circular hole 10 is opened in the center between the lead body 25 and the partition plate 26, and the mandrel body 16 described above is inserted into the circular hole 10. More specifically, the lead body 25 is made of pure lead, is a disc body having a predetermined thickness, and is a ready-made one. The partition plate 26 is a thin disk having a predetermined rigidity, and its material is steel, copper, plating (copper, tin).
Steel, copper alloys, metal mesh (metal wire mesh, expanded metal), FRP are selected as preferred. The lead plate 25 and the partition plate 26 may be in a contact (non-bonded) state or a bonded state. As an adhesive structure, the surface of the partition plate 26 is made rough and bites into the lead plate 25 to be gripped, or the lead plate 25 and the partition plate 26.
There is one that joins and via an adhesive. In this lead plug laminated structure, an integral molding method by casting can be adopted. That is, one or a plurality of through holes are formed in the partition plate 26, the partition plate 26 is held at a predetermined interval in the mold through a predetermined spacer, and a molten metal of lead is poured into the mold and taken out from the mold. It is molded. The lead body is integrally connected through the through hole of the partition plate 26. In this case as well, the partition plate 16 and the lead body can take both forms of a bonded state or a non-bonded state, and in the bonded state, the partition plate 26 is a rough surface,
In the non-bonded state, the surface of the partition plate 26 is smooth and the release agent is applied. According to the plastically deformable portion having the lead plug 15 of this laminated structure, by providing the partition plate 26,
The blunt shear deformation of lead body is promoted.
【0022】本発明は上記実施例に限定されるものでは
なく、本発明の基本的技術思想の範囲内で種々設計変更
が可能である。すなわち、以下の態様は本発明の技術的
範囲内に包含されるものである。 叙上の実施例では、円柱状の鉛封入積層ゴム支承S
を示したが、その他の形状のものを除外するものではな
い。図7及び図8はその一例としての四角柱状の鉛封入
積層ゴム支承S1を示す。図において、先の実施例と同
等の部材については同一の符号が付されている。すなわ
ち、この鉛封入積層ゴム支承S1においては、四角形状
の断面の積層ゴム体1に5つの塑性変形部2が配されて
なる。 心棒体16に適用される塑性材料として、叙上の実
施例で揚げた素材の他、アルミニウム、錫、亜鉛、銅及
びそれらの合金が採用される。The present invention is not limited to the above embodiments, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following aspects are included in the technical scope of the present invention. In the above embodiment, the cylindrical lead-containing laminated rubber bearing S is used.
However, other shapes are not excluded. 7 and 8 show an example of a quadrangular prism lead-containing laminated rubber bearing S1. In the drawing, the same reference numerals are given to the same members as those in the previous embodiment. That is, in this lead-encapsulated laminated rubber bearing S1, five plastic deformation portions 2 are arranged on the laminated rubber body 1 having a rectangular cross section. As the plastic material applied to the mandrel body 16, aluminum, tin, zinc, copper and alloys thereof are used in addition to the materials fried in the above-mentioned embodiment.
【0023】C. 発明の効果 本発明によれば、塑性変形部は所期の剛性に調整された
ものとなっているので、設計仕様に伴う所期のエネルギ
ー吸収特性を発揮し、設計の標準化が達成される。ま
た、塑性変形部の周りのゴム弾性層は純鉛体と当接した
状態となっているので、柔軟な当接状態が保持され、長
期の使用によってもゴム弾性層の損傷を来さず、性能の
劣化がない。更に、特性の確定した心棒体により所期の
剛性をもつ塑性変形部を容易に得ることができるので、
鉛プラグの改質に比べ製作が容易となり、製作コストの
低減を図ることができる。更にまた、心棒体の取替えに
より本鉛封入積層ゴム支承の塑性変形部の剛性を容易に
調整することができる。C. Effects of the Invention According to the present invention, since the plastically deformed portion is adjusted to the desired rigidity, the desired energy absorption characteristics according to the design specifications are exhibited, and the design is standardized. Is achieved. Further, since the rubber elastic layer around the plastically deformed portion is in contact with the pure lead body, the flexible contact state is maintained, and the rubber elastic layer is not damaged even after long-term use. There is no deterioration in performance. Furthermore, since the mandrel body with the defined characteristics makes it possible to easily obtain the plastically deformed portion having the desired rigidity,
The manufacturing is easier than the modification of the lead plug, and the manufacturing cost can be reduced. Furthermore, the rigidity of the plastically deformed portion of the lead-sealed laminated rubber bearing can be easily adjusted by replacing the mandrel.
【図1】本発明の一実施例の鉛封入積層ゴム支承の縦断
面図(図2のI−I線断面図)。FIG. 1 is a vertical sectional view of a lead-sealed laminated rubber bearing according to an embodiment of the present invention (a sectional view taken along line I-I of FIG. 2).
【図2】図1のII−II線断面平面図。FIG. 2 is a cross-sectional plan view taken along the line II-II of FIG.
【図3】この鉛封入積層ゴム支承の作用説明図。FIG. 3 is an operation explanatory view of the lead-sealed laminated rubber bearing.
【図4】塑性変形部の他の態様を示す部分縦断面図(図
5のIV−IV線断面図)。FIG. 4 is a partial vertical cross-sectional view showing another embodiment of the plastically deformable portion (cross-sectional view taken along the line IV-IV in FIG. 5).
【図5】図4のV−V線横断面図。5 is a cross-sectional view taken along line VV of FIG.
【図6】塑性変形部の更に他の態様を示す部分縦断面
図。FIG. 6 is a partial vertical cross-sectional view showing still another aspect of the plastically deformable portion.
【図7】本発明の他の実施例の鉛封入積層ゴム支承の縦
断面図(図8の VII− VII線断面図)。FIG. 7 is a vertical sectional view of a lead-containing laminated rubber bearing according to another embodiment of the present invention (a sectional view taken along the line VII-VII in FIG. 8).
【図8】図7のVIII−VIII線断面図。8 is a sectional view taken along line VIII-VIII of FIG.
S,S1…鉛封入積層ゴム支承、1…積層ゴム体、2…
塑性変形部、12…ゴム弾性層、13…補強板、15…
鉛プラグ、16…心棒体S, S1 ... Lead-containing laminated rubber bearing, 1 ... laminated rubber body, 2 ...
Plastic deformation part, 12 ... Rubber elastic layer, 13 ... Reinforcing plate, 15 ...
Lead plug, 16 ... Mandrel
Claims (3)
交互に鉛直方向に積層されてなる積層ゴム体内に鉛体を
主体とする塑性変形部が柱状に封入された鉛封入積層ゴ
ム支承において、 前記塑性変形部は、円柱状をなすとともに純鉛体からな
る鉛プラグの内部に、純鉛よりも硬度の大きい塑性材料
よりなる心棒体が挿入されてなる、ことを特徴とする鉛
封入積層ゴム支承。1. A lead-encapsulated laminate in which a plastically deformable portion mainly composed of a lead body is enclosed in a column shape in a laminated rubber body in which rubber elastic layers and reinforcing plates arranged horizontally are alternately laminated in a vertical direction. In the rubber bearing, the plastically deformable portion is formed into a cylindrical lead plug, and a mandrel body made of a plastic material having a hardness higher than that of pure lead is inserted inside the lead plug. Lead-containing laminated rubber bearing.
た鉛合金である請求項1に記載の鉛封入積層ゴム支承。2. The lead-containing laminated rubber bearing according to claim 1, wherein the mandrel is a lead alloy whose hardness is adjusted to be higher than that of pure lead.
介装される隔壁板との積層体からなる請求項1に記載の
鉛封入積層ゴム支承。3. The lead-filled laminated rubber bearing according to claim 1, wherein the lead plug comprises a laminated body of pure lead disc bodies and a partition plate interposed between the disc bodies.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26585393A JP3410172B2 (en) | 1993-09-29 | 1993-09-29 | Lead encapsulated laminated rubber bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26585393A JP3410172B2 (en) | 1993-09-29 | 1993-09-29 | Lead encapsulated laminated rubber bearing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0797828A true JPH0797828A (en) | 1995-04-11 |
JP3410172B2 JP3410172B2 (en) | 2003-05-26 |
Family
ID=17422991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP26585393A Expired - Lifetime JP3410172B2 (en) | 1993-09-29 | 1993-09-29 | Lead encapsulated laminated rubber bearing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3410172B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10246394A (en) * | 1997-02-28 | 1998-09-14 | Toshiba Eng & Constr Co Ltd | Installation method of equipment on base isolation floor |
KR100401234B1 (en) * | 2001-11-16 | 2003-10-17 | 유니슨 주식회사 | Seismic Isolation Bearing of Flange Type for Improving Peel Strength |
JP2009210064A (en) * | 2008-03-05 | 2009-09-17 | Bridgestone Corp | Laminated support |
CN103696504A (en) * | 2013-12-24 | 2014-04-02 | 北京化工大学 | Multilayer rubber laminated isolation bearing |
CN103758211A (en) * | 2013-12-20 | 2014-04-30 | 广西科技大学 | Lead core rubber bearing |
JP5661964B1 (en) * | 2014-06-13 | 2015-01-28 | 株式会社ダイナミックデザイン | Seismic isolation device and manufacturing method thereof |
JP2015507106A (en) * | 2011-11-30 | 2015-03-05 | スー ハオ, | Types of bearings that protect structures from earthquakes and other similar disasters |
-
1993
- 1993-09-29 JP JP26585393A patent/JP3410172B2/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10246394A (en) * | 1997-02-28 | 1998-09-14 | Toshiba Eng & Constr Co Ltd | Installation method of equipment on base isolation floor |
KR100401234B1 (en) * | 2001-11-16 | 2003-10-17 | 유니슨 주식회사 | Seismic Isolation Bearing of Flange Type for Improving Peel Strength |
JP2009210064A (en) * | 2008-03-05 | 2009-09-17 | Bridgestone Corp | Laminated support |
JP2015507106A (en) * | 2011-11-30 | 2015-03-05 | スー ハオ, | Types of bearings that protect structures from earthquakes and other similar disasters |
CN103758211A (en) * | 2013-12-20 | 2014-04-30 | 广西科技大学 | Lead core rubber bearing |
CN103696504A (en) * | 2013-12-24 | 2014-04-02 | 北京化工大学 | Multilayer rubber laminated isolation bearing |
JP5661964B1 (en) * | 2014-06-13 | 2015-01-28 | 株式会社ダイナミックデザイン | Seismic isolation device and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
JP3410172B2 (en) | 2003-05-26 |
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