JPS61294232A - Vibration energy absorbing device - Google Patents
Vibration energy absorbing deviceInfo
- Publication number
- JPS61294232A JPS61294232A JP13343785A JP13343785A JPS61294232A JP S61294232 A JPS61294232 A JP S61294232A JP 13343785 A JP13343785 A JP 13343785A JP 13343785 A JP13343785 A JP 13343785A JP S61294232 A JPS61294232 A JP S61294232A
- Authority
- JP
- Japan
- Prior art keywords
- elastic
- plastic member
- plastic
- rings
- ring
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/371—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by inserts or auxiliary extension or exterior elements, e.g. for rigidification
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Springs (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、構造物の防振あるいは免震に供される振動エ
ネルギ吸収装置に係り、特に、材料の塑性変形を利用し
て振動エネルギを吸収するようにした振動エネルギ吸収
装置の改良に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a vibration energy absorption device used for vibration isolation or seismic isolation of structures, and particularly to a vibration energy absorption device that utilizes plastic deformation of a material. The present invention relates to an improvement in a vibration energy absorbing device.
従来、地震力によって構造物が破壊されるのを防止する
ために、たとえば基礎と構造物本体との間に各種の振動
エネルギ吸収装置を挿設することが行われている。BACKGROUND ART Conventionally, in order to prevent structures from being destroyed by seismic force, various types of vibration energy absorbing devices have been inserted, for example, between a foundation and a structure body.
このような撮動エネルギ吸収装置は、エネルギ吸収メカ
ニズムから分類して、流体あるいは粘弾性体の粘性を利
用した粘性方式のものと、材料同志の摩、擦を利用した
摩擦方式のもと、材料の塑性変形を利用した塑性方式の
ものとに大別される。Such imaging energy absorption devices are classified based on the energy absorption mechanism: viscous type, which utilizes the viscosity of a fluid or viscoelastic body, and friction type, which utilizes friction between materials. It is broadly divided into plastic method that utilizes plastic deformation.
上記の撮動エネルギ吸収装置のうち、塑性方式を採用し
たものは、金属材料の塑性変形を利用したものが多く、
他の方式のものに比べて構造が簡単で、低価格であると
言う利点を備えている。エネルギ吸収に直接供される弾
塑性部材としては通常、鉄材、鉛あるいは鉛系合金材が
使用されている。このうち、特に、鉛系の材料は可塑性
に優れており、大変位を伴う振動においても充分な追随
特性を有している。Among the above-mentioned imaging energy absorption devices, many that adopt the plastic method utilize plastic deformation of metal materials.
It has the advantage of being simpler in structure and cheaper than other methods. Iron, lead, or a lead-based alloy is usually used as the elastoplastic member that directly absorbs energy. Among these materials, lead-based materials in particular have excellent plasticity and have sufficient follow-up characteristics even in vibrations accompanied by large displacements.
ところで、材料の剪断変形による弾塑性特性を利用した
従来の振動エネルギ吸収装置は、一般に。By the way, conventional vibration energy absorbing devices that utilize the elastic-plastic properties of materials due to shear deformation generally do not.
第４図、第５図あるいは第７図に示すように構成されて
いる。すなわち、第４図に示すものは、対象とする２つ
の構造物の部材１，２にそれぞれ固定板３．４を互いに
対面する関係に固定し、これら固定板３．４間に、たと
えば鉛系材料を円柱状に加工してなる弾塑性部材５を介
挿した構造となっている。なお、各固定板３．４と弾塑
性部材５とはろう接着等によって接合されている。また
。It is constructed as shown in FIG. 4, FIG. 5, or FIG. 7. That is, in the structure shown in FIG. 4, fixing plates 3.4 are fixed to members 1 and 2 of the two target structures in such a manner that they face each other, and between these fixing plates 3.4, for example, lead-based It has a structure in which an elastic-plastic member 5 made of a material processed into a cylindrical shape is inserted. Note that each fixed plate 3.4 and the elastic-plastic member 5 are joined by soldering or the like. Also.
第５図に示すものは１弾塑性部材５の両端部を各固定板
３．４に形成された凹部６，７に嵌入させ。In the one shown in FIG. 5, both ends of one elastic-plastic member 5 are fitted into recesses 6 and 7 formed in each fixing plate 3.4.
この嵌合によって弾塑性部材５と各固定板３．４とを結
合させるようにしている。さらに、第７図に示すものは
、固定板３．４間に１部材１に対して部材２を支持さ・
せるための弾性支持体、たとえばラバーベアリング８を
介在させるとともにラバーベアリング８に軸方向に延び
る貫通孔９を設け。Through this fitting, the elastic-plastic member 5 and each fixing plate 3.4 are coupled together. Furthermore, in the one shown in FIG. 7, member 2 is supported for one member 1 between fixed plates 3 and 4.
An elastic support such as a rubber bearing 8 is interposed therebetween, and a through hole 9 extending in the axial direction is provided in the rubber bearing 8.
この貫通孔９内に矩形断面の螺旋状コイル１０で巻かれ
た弾塑性部材５を収容したものとなっている。なお、ラ
バーベアリング８は、金属板１１とゴム板１２とを交互
に積層接合したものとなっている。This through hole 9 accommodates an elastoplastic member 5 wound with a helical coil 10 having a rectangular cross section. Note that the rubber bearing 8 is made by laminating and bonding metal plates 11 and rubber plates 12 alternately.
これらの振動エネルギ吸収装置にあって、地震等によっ
て構造物が振動して１部材１，２間に相対変位が生じる
と１部材１，２間に存在している弾塑性部材５が強制変
位を受ける。この時２弾塑性部材５が塑性変形すると、
その塑性変形に必要な仕事量に等しいエネルギ損失が生
じ、この結果として部材１．２間の撮動エネルギが吸収
され。In these vibration energy absorption devices, when the structure vibrates due to an earthquake or the like and a relative displacement occurs between the members 1 and 2, the elastic-plastic member 5 existing between the members 1 and 2 undergoes forced displacement. receive. At this time, when the second elastic-plastic member 5 is plastically deformed,
An energy loss occurs which is equal to the amount of work required for its plastic deformation, and as a result of which the energy captured between the parts 1.2 is absorbed.
構造物全体の振動応答が減少される。The vibration response of the entire structure is reduced.
しかしながら、上記のように構成された従来の振動エネ
ルギ吸収装置にあっては次のような問題があった・
すなわち、第４図および第５図に示したものにあっては
１部材１，２の図中横方向の相対変位によって弾塑性部
材５が繰り返し横方向の変形を受けると、固定板３．４
と弾塑性部材５との間の局部的拘束に伴う固定板３．４
に近い部分と中央部分との間の曲げおよび引張り状態の
相違により。However, the conventional vibration energy absorbing device configured as described above had the following problems. Namely, in the device shown in FIGS. 4 and 5, one member 1, 2 In the figure, when the elastic-plastic member 5 is repeatedly deformed in the lateral direction due to the relative displacement in the lateral direction, the fixing plate 3.4
Fixed plate 3.4 due to local restraint between and elastic-plastic member 5
Due to the difference in bending and tensile conditions between the near part and the central part.
弾塑性部材５は比較的少ない繰り返し回数で第６図に示
すように固定板３．４に近い部分Ｘがくびれ、中央部分
Ｙが膨出した形状となる。このため。After a relatively small number of repetitions, the elastic-plastic member 5 assumes a shape in which the portion X near the fixed plate 3.4 is constricted and the central portion Y is bulged, as shown in FIG. For this reason.
塑性変形に要する抵抗力が次第に小さくなり、エネルギ
吸収能力が減少する。そして、最終的にはくびれ部分で
弾塑性部材５が破断して、エネルギ吸収装置としての機
能を喪失する問題があった。The resistance force required for plastic deformation becomes smaller and the energy absorption capacity decreases. There is a problem in that the elastic-plastic member 5 eventually breaks at the constricted portion and loses its function as an energy absorbing device.
一方、第７図に示すものは１弾塑性部材５の外周に螺旋
状コイル１ｏを巻き付けているので、第６図で説明した
ような問題は少ない。しかし、このような構造であると
、構造物の支持材であるラバーベアリング８内に弾塑性
部材５を収容するようにしているので、エネルギ吸収装
置全体の保守あるいは交換が非常に面倒なものとなり２
弾塑性部材５のエネルギ吸収性能低下による耐震性の脆
弱化に速やかに対応できない問題がある。すなわち。On the other hand, in the case shown in FIG. 7, the spiral coil 1o is wound around the outer periphery of one elastic-plastic member 5, so that the problem described in FIG. 6 is less likely to occur. However, with such a structure, the elastoplastic member 5 is housed within the rubber bearing 8 that is the support material for the structure, making maintenance or replacement of the entire energy absorption device extremely troublesome. 2
There is a problem in that it is not possible to promptly respond to weakening of the earthquake resistance due to a decrease in the energy absorption performance of the elastic-plastic member 5. Namely.
何度かの地震あるいは撮動により弾塑性部材５が塑性変
形を繰り返すと９弾塑性部材５の組織が変化してエネル
ギ吸収能力が低下する。したがって。When the elastoplastic member 5 undergoes repeated plastic deformation due to several earthquakes or imaging, the structure of the elastoplastic member 5 changes and the energy absorption capacity decreases. therefore.
一般的には、エネルギ吸収装置全体を検査し、所定の特
性以下の場合には取り換える必要がある。Generally, the entire energy absorbing device must be inspected and replaced if its characteristics are below a predetermined value.
このような交換を行なわないと２次回の地震の場合に所
定の耐震性および信頼性が得られず、構造物の安全性に
重大な影響を及ぼす。しかし、第７図に示す構造である
と、エネルギ吸収装置全体がラバーベアリング８内に位
置しているので、エネルギ吸収装置の特性を簡単に検査
すφことができない。このため、交換のタイミングを誤
る虞れが多分にあった。また１弾塑性部材５の径方向の
変形を拘−束すると°ともに剪断変形を許すために、矩
形断面の螺旋状コイル１０を弾塑性部材５の外周に巻回
しているのであるが、このような構造であると１部材１
．２間の相対変位で弾塑性部材５が相対的な変形力を受
けて変形したとき、螺旋状コイル１０もそれぞれのコイ
ル間で相対変形を受ける。この場合、螺旋状コイル１０
は連続しているので、この螺旋状コイル１０にはねじり
力が作用することになる。前述のように螺旋状コイル１
０は弾塑性部材５の径方向の変形力を受持っているので
、結局、この力と上述したねじり力とを加えた過大な力
が螺旋状コイル１０に作用することになり、螺旋状コイ
ル１０が破断する虞れがある。If such replacement is not performed, predetermined seismic resistance and reliability will not be obtained in the event of a second earthquake, which will seriously affect the safety of the structure. However, with the structure shown in FIG. 7, the entire energy absorbing device is located within the rubber bearing 8, so the characteristics of the energy absorbing device cannot be easily inspected. For this reason, there was a high possibility that the timing of replacement would be incorrect. In addition, in order to constrain the radial deformation of the elastic-plastic member 5 and allow shear deformation, a helical coil 10 with a rectangular cross section is wound around the outer periphery of the elastic-plastic member 5. If the structure is 1 member 1
．． When the elastic-plastic member 5 is deformed by receiving a relative deformation force due to the relative displacement between the two, the helical coil 10 also undergoes relative deformation between the respective coils. In this case, the helical coil 10
Since the coil 10 is continuous, a twisting force acts on the helical coil 10. Helical coil 1 as mentioned above
0 is in charge of the radial deformation force of the elastic-plastic member 5, so an excessive force consisting of this force and the above-mentioned torsion force will eventually act on the helical coil 10, causing the helical coil to deform. 10 may break.
もし破断した場合には径方向の変形に対しての拘束力が
なくなるので、第４図および第５図に示した装置と同様
の問題が発生することになる。また。If it breaks, there will be no restraining force against radial deformation, resulting in the same problem as in the devices shown in FIGS. 4 and 5. Also.
第４図、第５図および第７図のものに共通して言えるの
は１部材１．２間の相対変位が非常に大きくなるような
地震に遭遇したとき１弾塑性部材５が許容変位量を越え
て破壊されたり、荷重支持部材等が破壊されたりする虞
れがある点である。このような破壊が生じると、構造物
全体に重大な危険を及ぼすことになる。4, 5, and 7 have in common that when an earthquake occurs in which the relative displacement between 1 member 1 and 2 becomes extremely large, 1 elastoplastic member 5 has the allowable displacement amount. There is a risk that the load bearing member or the like may be destroyed. If such a failure were to occur, it would pose a serious risk to the entire structure.
（発明の目的）
本発明は、このような事情に鑑みてなされたもので、そ
の目的とするところは、エネルギ吸収に供される弾塑性
部材のエネルギ吸収機能をより長期に亙って持続させる
ことができるとともに保守点検あるいは交換が容易で、
しかも弾塑性部材や荷重支持部材等の破壊を確実に防止
できる撮動エネルギ吸収装置を提供するとことにある。(Object of the Invention) The present invention has been made in view of the above circumstances, and its purpose is to maintain the energy absorption function of an elastoplastic member used for energy absorption for a longer period of time. It is easy to maintain, inspect or replace.
Moreover, it is an object of the present invention to provide an imaging energy absorbing device that can reliably prevent damage to elastic-plastic members, load-supporting members, and the like.
本発明によれば、相対変位が生じ得る２つの部材にそれ
ぞれ支持された第１および第２の固定板と、この第１お
よび第２の固定板間に挿設された可塑性を有する弾塑性
部材と、この弾塑性部材の外周に上記弾塑性部材の外周
面に密接させて軸方向に積層状態に、かつ径方向に滑動
自在に装着された上記弾塑性部材より材料強度および剛
性の大きい複数のリングと、隣接するもの同志が遊嵌す
る関係に前記各リングにそれぞれ設けられ隣接するリン
グの径方向への相対移動を一定値以下に規制する係合部
とを備えた撮動エネルギ吸収装置が提供される。According to the present invention, first and second fixing plates each supported by two members capable of relative displacement, and an elastic-plastic member having plasticity inserted between the first and second fixing plates. A plurality of elastoplastic members having higher material strength and rigidity than the elastoplastic member are attached to the outer circumference of the elastoplastic member in a laminated state in the axial direction and slidably in the radial direction in close contact with the outer peripheral surface of the elastoplastic member. An imaging energy absorption device comprising a ring and an engaging portion provided in each of the rings so that the adjacent rings are loosely fitted to each other and restricts relative movement of the adjacent rings in the radial direction to a certain value or less. provided.
地震等のように°２つの部材間に相対変位が生じるよう
な撮動力が加わると１弾塑性部材は上記２つの部材間の
相対変位量に応じた塑性変形を繰り返し受ける。この時
１弾塑性部材には１両端部にくびれ部を、また中央部に
膨出部を形成させる力が作用する。しかし１弾塑性部材
の外周には前記関係にリングが装着されているので、こ
れらリングが互いに滑って弾塑性部材の剪断変形は許す
が弾塑性部材の径方向の変形を拘束してくびれ部や膨出
部の発生を防止する。このように１弾塑性部材の両端部
にくびれ部が発生するのを防止できるので、このくびれ
部の発生によって少ない繰り返し回数で弾塑性部材が破
断するのを防止でき、結局、長期間に亙って弾塑性部材
に良好なエネルギ吸収機能を発揮させることができる。When a photographing force that causes a relative displacement between two members is applied, such as during an earthquake, one elastic-plastic member repeatedly undergoes plastic deformation in accordance with the amount of relative displacement between the two members. At this time, a force acts on the elastoplastic member to form a constriction at both ends and a bulge at the center. However, since rings are attached to the outer periphery of the elastoplastic member 1 in the above relationship, these rings slide against each other, allowing shear deformation of the elastoplastic member but restraining the radial deformation of the elastoplastic member. Prevents the occurrence of bulges. In this way, it is possible to prevent the formation of constrictions at both ends of one elastoplastic member, so it is possible to prevent the elastoplastic member from breaking with a small number of repetitions due to the generation of this constriction, and as a result, it can be used for a long period of time. This allows the elastic-plastic member to exhibit a good energy absorption function.
この場合。in this case.
各リングは軸方向には独立しているので１弾塑性部材が
塑性変形したとき、各リングには弾塑性部材の径方向の
変形力以外の力はほとんど加わらない。したがって、結
果的に、各リングの強度を増加させることができ、なお
一層の長寿命化を図ることができる。また、各リングに
、隣接しているもの同志が互いに遊嵌して隣接するリン
グの径方向への相対移動層を一定値以下に規制する係合
部を設けているので１部材間に大変位が生じようとして
も、その変位は各リング間に設定された許容移動量、つ
まり隣接するリング間の許容変位の合計した変位に拘束
される。したがって、上記拘束変位を１弾塑性部材や荷
重支持部材等の許容変位量に予め設定しておくことによ
り、大地震時に起こり易い弾塑性部材の破壊や荷重支持
部材の破壊を防止でき、これらが破壊したときに生じる
構造物への重大な影響を回避させることができる。さら
に、他の要素とは独立して設置することができるので、
地震終了後に弾塑性部材の現在の状態や特性を検査する
ことが容易となり、この結果、交換のタイミングの誤り
防止にも寄与できる。また。Since each ring is independent in the axial direction, when one elastic-plastic member is plastically deformed, almost no force other than the deforming force in the radial direction of the elastic-plastic member is applied to each ring. Therefore, as a result, the strength of each ring can be increased, and the life span can be further extended. In addition, since each ring is provided with an engaging portion that allows adjacent rings to loosely fit into each other and restrict the relative movement layer of the adjacent rings in the radial direction to a certain value or less, there is a large displacement between one member. Even if this occurs, the displacement is restricted to the allowable movement amount set between each ring, that is, the sum of the allowable displacements between adjacent rings. Therefore, by setting the above-mentioned constraint displacement in advance to the permissible displacement amount of 1 elastic-plastic members, load-supporting members, etc., it is possible to prevent the destruction of elastic-plastic members and load-supporting members that are likely to occur during large earthquakes. It is possible to avoid serious effects on the structure that would occur when the structure is destroyed. Moreover, it can be installed independently of other elements, so
It becomes easy to inspect the current state and characteristics of the elastoplastic member after an earthquake, and as a result, it can also contribute to preventing mistakes in the timing of replacement. Also.
他の装置、たとえばラバーベアリングのような荷重支持
装置とは独立して設置することができるので、装置の交
換の容易化にも寄与できる。Since it can be installed independently of other devices, such as load supporting devices such as rubber bearings, it can also contribute to facilitating device replacement.
以下１本発明の実施例を図面を参照しながら説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は１本発明の一実施例に係る撮動エネルギ吸収装
置を実際に対象とする２つの構造物の部材２１．２２間
に設置した例の側面図である。すなわち、このエネルギ
吸収装置は１部材２１゜２２に固定板２３．２４を互い
に対面する関係に図示しないボルト等で固定するととも
に上記固定板２３．２４間に、たとえば鉛で円柱状に形
成された弾塑性部材２５を挿設している。そして１弾塑
性部材２５と各固定板２３．２４とは、たとえばろう接
着によって接合されている。FIG. 1 is a side view of an example in which an imaging energy absorption device according to an embodiment of the present invention is installed between members 21 and 22 of two target structures. That is, in this energy absorbing device, fixing plates 23 and 24 are fixed to one member 21 and 22 so as to face each other with bolts (not shown), and a columnar shape made of lead, for example, is formed between the fixing plates 23 and 24. An elastic-plastic member 25 is inserted. The first elastic-plastic member 25 and each fixing plate 23, 24 are bonded, for example, by brazing.
弾塑性部材２５の外周には１弾塑性部材２５の外周面に
密接し、かつ軸方向に積層状態に複数のリング２６が装
着されている。これらリング２６は、この実施例の場合
１弾塑性部材２５を構成している鉛より引張り強度の大
きい鉄で１弾、塑性部材５の径方向の変形力に坑するこ
とができるように形成されたものが用いられている。各
リング２６は、それぞれ弾塑性部材２５の外周面に直接
接触するリング本体２７と、このリング本体２７の一端
側から外方に向けて突出した部分２８と。A plurality of rings 26 are attached to the outer circumference of the elastic-plastic member 25 in close contact with the outer circumferential surface of one elastic-plastic member 25 and stacked in the axial direction. In this embodiment, these rings 26 are made of iron, which has a higher tensile strength than the lead that constitutes the first elastic-plastic member 25, and are formed so as to be able to withstand the deformation force in the radial direction of the plastic member 5. are used. Each ring 26 includes a ring body 27 that directly contacts the outer peripheral surface of the elastic-plastic member 25, and a portion 28 that projects outward from one end of the ring body 27.
この部分２８の先端からリング本体２７の軸心線と平行
に、かつリング本体２７の端面から突出する向きに延出
した突周壁２９とで構成されている。It is constituted by a protruding peripheral wall 29 extending from the tip of this portion 28 in parallel with the axis of the ring body 27 and in a direction protruding from the end face of the ring body 27.
上記のように構成された各リング２６は、第１図に示す
ように突周壁２９の突出方向を一致させて積層され１弾
塑性部材２５の外周に装着されている。したがって、下
段に位置するリング２６の突周壁２９の内周面とその上
段に位置するリング２６のリング本体２７の外周面との
間にはそれぞれ所定の隙間３０が形成されている。そし
て、最下段に位置しているリング２６は固定板２３に固
定されており、また最上段に位置しているリング２６は
固定板２４に固定されている。なお、この実施例では最
上段に位置しているリング２６として１部分２８および
突周壁２９の省略されたされたものが用いられている。As shown in FIG. 1, each ring 26 configured as described above is laminated with the protruding directions of the projecting peripheral walls 29 aligned, and is attached to the outer periphery of one elastic-plastic member 25. Therefore, a predetermined gap 30 is formed between the inner peripheral surface of the projecting peripheral wall 29 of the ring 26 located at the lower stage and the outer peripheral surface of the ring body 27 of the ring 26 located at the upper stage. The ring 26 located at the lowest stage is fixed to the fixed plate 23, and the ring 26 located at the highest stage is fixed to the fixed plate 24. In this embodiment, a ring 26 located at the uppermost stage is used in which one portion 28 and the projecting peripheral wall 29 are omitted.
このような構成であると、地震等によって部材２１．２
２間に図中横方向の相対変位が生じると。With such a configuration, members 21.2 may be damaged due to earthquakes, etc.
If a relative displacement occurs between the two in the lateral direction in the figure.
各リング２６が互いに径方向に滑り１弾塑性部材２５は
、第２図に示すような変形を繰り返し受ける。このため
２弾塑性部材２５内で塑性変形に必要なエネルギ消費が
起こり、このエネルギ消費によって振動エネルギ吸収装
置としての機能が発揮される。The rings 26 slide relative to each other in the radial direction, and the elastoplastic member 25 is repeatedly deformed as shown in FIG. For this reason, energy consumption necessary for plastic deformation occurs within the second elastic-plastic member 25, and this energy consumption provides the function as a vibration energy absorbing device.
そして、この場合には、繰り返し変形によって弾塑性部
材２５にくびれ部や膨出部が発生しようとしても、この
発生力が各リング２６によって抑えられるので、結局、
くびれ部や膨出部の発生が抑制される。このように、特
に９弾塑性部材２５の両端部に起こり易いくびれの発生
を防止できるので、少ない繰り返し回数で弾塑性部材２
５が破断するのを防止でき、エネルギ吸収橢能を長期に
亙って良好に発揮させることができる。また、各リング
２６は軸方向には独立しているので１弾塑性部材２５が
塑性変形したとき、各リング２６には弾塑性部材２５の
径方向の変形力以外の力は加わらない。このため、変形
防止部材として螺旋状コイルを用いたものに比べて、結
果的にリング２６の強度を増加させることができ、なお
一層の長寿命化を図ることができる。また、大地震の到
来等によって２部材２１．２２間の相対変位器がある値
を越えようとすると第３図に示すように一方向において
、下段の突周壁２９と、その上段のリング本体２７との
間の隙間３ｏが零となり、突周壁２９と隣接するリング
本体２７との係合作用によって、それ以上の変位となる
のが防止される。In this case, even if a constriction or a bulge is generated in the elastic-plastic member 25 due to repeated deformation, this generated force is suppressed by each ring 26, so that
The occurrence of constrictions and bulges is suppressed. In this way, it is possible to prevent the occurrence of constrictions that are likely to occur particularly at both ends of the elastic-plastic member 25, so that the elastic-plastic member 2 can be fixed with a small number of repetitions.
5 can be prevented from breaking, and energy absorption ability can be exhibited satisfactorily over a long period of time. Further, since each ring 26 is independent in the axial direction, when one elastic-plastic member 25 is plastically deformed, no force other than the deforming force in the radial direction of the elastic-plastic member 25 is applied to each ring 26. As a result, the strength of the ring 26 can be increased as compared to the case where a helical coil is used as the deformation prevention member, and the life of the ring 26 can be further extended. Furthermore, if the relative displacement between the two members 21 and 22 is about to exceed a certain value due to the arrival of a large earthquake, etc., the lower projecting peripheral wall 29 and the upper ring body 27 will move in one direction as shown in FIG. The gap 3o between them becomes zero, and further displacement is prevented by the engagement between the protruding peripheral wall 29 and the adjacent ring body 27.
したがって、隙間３０の総和を９弾塑性部材２５の適切
な許容変位量１あるいは部材２１．２２間に設けられる
。たとえば荷重支持部材の許容変位量に設定しておきさ
えすれば、上記許容変量以内の変位のときには弾塑性部
材２５の塑性変形で振動エネルギを吸収させることがで
き、許容変位ａを越えようとしたときにはリング本体２
７と突周壁２９との係合作用で変位を強制的に許容変位
量に拘束して弾塑性部材２５や荷重支持部材が破壊され
るのを防止することができる。また、このエネルギ吸収
装置を実際に設置するときには他の要素とは無関係に設
置することができる。このため。Therefore, the sum of the gaps 30 is set to an appropriate allowable displacement amount 1 of the 9 elastic-plastic members 25 or between the members 21 and 22. For example, as long as the allowable displacement amount of the load supporting member is set, when the displacement is within the above allowable amount, the vibration energy can be absorbed by the plastic deformation of the elastic-plastic member 25, and if the displacement is about to exceed the allowable displacement a. Sometimes the ring body 2
7 and the projecting peripheral wall 29 forcibly restricts the displacement to an allowable displacement amount, thereby preventing the elastic-plastic member 25 and the load-supporting member from being destroyed. Furthermore, when actually installing this energy absorbing device, it can be installed independently of other elements. For this reason.
地震が収まった時点で速やかに点検、特性検査等を行う
ことができるので、交換のタイミングの誤り防止にも寄
与できる。さらに、他の要素とは独立して設置すること
ができるので、交換の容易化にも寄与でき、結局、前述
した効果を発揮させることができる。As soon as the earthquake subsides, inspections, characteristics tests, etc. can be carried out, which can help prevent mistakes in the timing of replacement. Furthermore, since it can be installed independently of other elements, it can contribute to ease of replacement, and as a result, the above-mentioned effects can be achieved.
なお１本発明は、上述した実施例に限定されるものでは
なく２種々変形することができる。すなわち、上述した
実施例では１弾塑性部材２５の両端面を各固定板２３．
２４にろう接着等で固定しているが、各固定板２３．２
４にそれぞれ凹部を設け、これら凹部に弾塑性部材２５
の両端部を。Note that the present invention is not limited to the embodiments described above, and can be modified in various ways. That is, in the embodiment described above, both end surfaces of one elastic-plastic member 25 are connected to each fixing plate 23.
It is fixed to 24 with solder adhesive etc., but each fixing plate 23.2
4 are provided with recesses, and elastic-plastic members 25 are provided in these recesses.
Both ends of.
この両端部外周に装着されたリングと一体に嵌入させる
させることによって弾塑性部材２５の両端および両端に
位置するリングと各固定板２３゜２４との接合を行うよ
うにしてもよい。このようにすると１両者の接合をより
強固なものにでき。The fixing plates 23 and 24 may be joined to both ends of the elastic-plastic member 25 and the rings located at both ends by integrally fitting the rings attached to the outer periphery of both ends. In this way, the bond between the two can be made stronger.
装置としての信頼性を向上させることができる。The reliability of the device can be improved.
また１弾塑性部材２５の形状は円柱状に限らず角柱状で
も良く、その径および長さはこのエネルギ吸収装置を実
際に設置するときの総数、対象とする構造物の質量、構
造物の剛性、必要とされるエネルギ吸収層および使用す
る弾塑性部材の塑性特性によって決定されることは勿論
である。また。In addition, the shape of the first elastic-plastic member 25 is not limited to a cylindrical shape, but may be a prismatic shape, and its diameter and length are determined by the total number when this energy absorption device is actually installed, the mass of the target structure, and the rigidity of the structure. Of course, this is determined by the required energy absorption layer and the plastic properties of the elastoplastic member used. Also.
弾塑性部材を形成する材料も鉛に限らず、鉛系合金や鉄
等を使用できることは勿論である。さらに。Of course, the material forming the elastic-plastic member is not limited to lead, and lead-based alloys, iron, etc. can also be used. moreover.
上述した実施例では荷重支持手段について格別触れてい
ないが、ラバーベアリングのように振動変形時も含めて
荷重支持時に縮む荷重支持機構を用いる場合には、２つ
の固定板の何れかと、これが支持される部材、どの間に
縮み分を吸収する手段。Although the load supporting means is not specifically mentioned in the above-mentioned embodiments, when using a load supporting mechanism such as a rubber bearing that contracts when supporting a load, including during vibration deformation, it is supported by one of the two fixed plates. A means of absorbing shrinkage between the parts and the parts that
たとえば弾性機構を介在させるか、縮み分に相当する隙
間を設けるようにすればよい。For example, an elastic mechanism may be interposed, or a gap corresponding to the shrinkage may be provided.
第１図は本発明の一実施例に係る振動エネルギ吸収装置
を実際に２つの部材間に設置したときの例を一部切欠し
て示す側面図、第２図は同装置がエネルギ吸収動作を行
っているときの断面図、第３図は同装置が変位拘束動作
を行っているときの断面図、第４図および第５図はそれ
ぞれ従来の撮動エネルギ吸収装置の縦断面図、第６図は
上記従来装置の問題点を説明するための図、第７図は従
来の撮動エネルギ吸収装置のさらに別の例の縦断面図で
ある。
２１．２２・・・部材、２３．２４・・・固定板、２５
・・・弾塑性部材、２６・・・リング、２９・・・変位
を拘束する係合部として機能する突周壁。
出願人代理人 弁理士 鈴江武彦
第３図
１ ｍ ６ 凶FIG. 1 is a partially cutaway side view showing an example of a vibration energy absorbing device according to an embodiment of the present invention actually installed between two members, and FIG. 3 is a sectional view when the device is performing a displacement restraint operation, FIGS. 4 and 5 are longitudinal sectional views of a conventional imaging energy absorption device, and FIG. The figure is a diagram for explaining the problems of the conventional device, and FIG. 7 is a longitudinal cross-sectional view of yet another example of the conventional imaging energy absorption device. 21.22... Member, 23.24... Fixed plate, 25
. . . Elastoplastic member, 26 . . . Ring, 29 . Applicant's agent Patent attorney Takehiko Suzue Figure 3 1 m 6
Claims (2)
するためのものであって、前記各部材にそれぞれ支持さ
れた第１および第２の固定板と、この第１および第２の
固定板間に挿設された可塑性を有する弾塑性部材と、こ
の弾塑性部材の外周に上記弾塑性部材の外周面に密接さ
せて軸方向に積層状態に、かつ径方向に滑動自在に装着
された上記弾塑性部材より材料強度および剛性の大きい
複数のリングと、隣接するもの同志が遊嵌する関係に前
記各リングにそれぞれ設けられ隣接するリングの径方向
への相対移動を一定値以下に規制する係合部とを具備し
てなることを特徴とする振動エネルギ吸収装置。(1) First and second fixing plates that are for absorbing kinetic energy during relative movement between two members and are supported by each of the members, respectively, and the first and second fixing plates. An elastic-plastic member having plasticity is inserted between the plates, and the elastic-plastic member is attached to the outer circumference of the elastic-plastic member in a laminated state in the axial direction in close contact with the outer circumferential surface of the elastic-plastic member and slidably in the radial direction. Each ring is provided with a plurality of rings having material strength and rigidity greater than the elastic-plastic member in a loosely fitting relationship with the adjacent rings, and the relative movement of the adjacent rings in the radial direction is restricted to below a certain value. A vibration energy absorbing device comprising: an engaging portion.
選ばれた１種で形成されたものであることを特徴とする
特許請求の範囲第１項記載の振動エネルギ吸収装置。(2) The vibration energy absorbing device according to claim 1, wherein the elastic-plastic member is made of one selected from lead, a lead-based alloy, and iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60133437A JPH0689800B2 (en) | 1985-06-19 | 1985-06-19 | Vibration energy absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60133437A JPH0689800B2 (en) | 1985-06-19 | 1985-06-19 | Vibration energy absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61294232A true JPS61294232A (en) | 1986-12-25 |
| JPH0689800B2 JPH0689800B2 (en) | 1994-11-14 |
Family
ID=15104749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60133437A Expired - Lifetime JPH0689800B2 (en) | 1985-06-19 | 1985-06-19 | Vibration energy absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0689800B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02245540A (en) * | 1989-03-16 | 1990-10-01 | Okumura Corp | Damping device |
| JP2000240722A (en) * | 1999-02-23 | 2000-09-05 | Maeda Corp | Base isolation device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5249609A (en) * | 1975-10-14 | 1977-04-20 | New Zealand Inventions Dev | Absorbing matter for periodic shearing energy |
| JPS54136489U (en) * | 1978-03-17 | 1979-09-21 |
-
1985
- 1985-06-19 JP JP60133437A patent/JPH0689800B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5249609A (en) * | 1975-10-14 | 1977-04-20 | New Zealand Inventions Dev | Absorbing matter for periodic shearing energy |
| JPS54136489U (en) * | 1978-03-17 | 1979-09-21 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02245540A (en) * | 1989-03-16 | 1990-10-01 | Okumura Corp | Damping device |
| JP2000240722A (en) * | 1999-02-23 | 2000-09-05 | Maeda Corp | Base isolation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0689800B2 (en) | 1994-11-14 |
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