JPH05214840A - Damper of response control device for building - Google Patents
Damper of response control device for buildingInfo
- Publication number
- JPH05214840A JPH05214840A JP1684192A JP1684192A JPH05214840A JP H05214840 A JPH05214840 A JP H05214840A JP 1684192 A JP1684192 A JP 1684192A JP 1684192 A JP1684192 A JP 1684192A JP H05214840 A JPH05214840 A JP H05214840A
- Authority
- JP
- Japan
- Prior art keywords
- damper
- building
- receiving body
- hole
- main body
- 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)
- Vibration Dampers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、繰返し変形に対して
耐久性、信頼性を有する地震エネルギー等の振動を吸収
する建造物用免震装置のダンパーに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper for a seismic isolation device for a building, which has durability and reliability against repeated deformation and which absorbs vibration such as seismic energy.
【０００２】[0002]
【従来の技術】建造物用免震装置のダンパーとしては、
例えば、図９に示すようなものがあり、このものは、棒
状のダンパー主体４とこのダンパー主体４を両端で支持
する建造物側受承体１及び地盤側受承体２とから構成さ
れている。ダンパー主体４は、鋼製の棒体４９の上端部
にタイコ形状の慴動部４８を設けて構成したもので、こ
れの下端部は地盤側に取付けられる地盤側受承体２に固
定され、摺動部４８は建造物側に取付けられる建造物側
受承体１の孔部に摺動自在に挿入されている。尚、この
ものでは、地盤側受承体２を漏斗状曲面凹部に形成され
た変形拘束ガイドを具備させたものとしてあり、ダンパ
ー主体４の下端部は漏斗状曲面凹部の中央孔部に挿入さ
れる態様で固定してある。2. Description of the Related Art As a damper for a seismic isolation device for buildings,
For example, there is one as shown in FIG. 9, which comprises a rod-shaped damper main body 4 and a building-side receiving body 1 and a ground-side receiving body 2 which support the damper main body 4 at both ends. There is. The damper main body 4 is constituted by providing a steel rod 49 with a Tyco-shaped slidable portion 48 at the upper end thereof, the lower end of which is fixed to the ground-side receiving body 2 attached to the ground side. The sliding portion 48 is slidably inserted into the hole of the building-side receiving body 1 attached to the building side. In this case, the ground-side receiving body 2 is provided with a deformation restraint guide formed in the funnel-shaped curved surface concave portion, and the lower end portion of the damper main body 4 is inserted into the central hole portion of the funnel-shaped curved surface concave portion. It is fixed in the manner described below.
【０００３】したがって、上記地盤側受承体２と建造物
側受承体１とが水平方向に相対移動すべく振動した場
合、摺動部４８が建造物側受承体１に対して上下動を繰
り返しながら、ダンパー主体４は地盤側受承体２を漏斗
状曲面に拘束された状態で変形を繰り返すこととなる。
よって、上記したダンパー主体４には曲率半径の小さい
屈曲は生じないものとなり、その結果、極短期間でダン
パー主体４が破壊されるようなことはない。Therefore, when the ground-side receiving body 2 and the building-side receiving body 1 vibrate so as to relatively move in the horizontal direction, the sliding portion 48 moves vertically with respect to the building-side receiving body 1. By repeating the above, the damper main body 4 repeats the deformation while the ground-side receiving body 2 is constrained to the funnel-shaped curved surface.
Therefore, the damper main body 4 described above does not bend with a small radius of curvature, and as a result, the damper main body 4 is not destroyed in an extremely short period of time.
【０００４】ところが、この建造物用免震装置のダンパ
ーでは、ダンパー主体４に極端に小さな曲率半径の曲げ
は生じないものの、ダンパー主体４の固定部近傍に力が
集中することから、この部分でのダンパー主体４の破壊
が比較的短期間で生じてしまう。However, in the damper of the seismic isolation device for a building, although the bending of the damper main body 4 with an extremely small radius of curvature does not occur, the force concentrates in the vicinity of the fixed portion of the damper main body 4, so that in this part. The destruction of the damper main body 4 occurs in a relatively short period of time.
【０００５】[0005]
【発明が解決しようとする課題】そこで、この発明で
は、ダンパー主体に作用する力が集中しないようにする
ことにより、長期間使用できる建造物用免震装置のダン
パーを提供することを課題とする。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a building seismic isolation device damper that can be used for a long period of time by preventing the force acting on the damper main body from being concentrated. ..
【０００６】[0006]
【課題を解決するための手段】この発明の建造物用免震
装置のダンパーは、剛性の大きい剛体部と前記剛体部の
上下端に突設され且つこれよりも剛性が小さい軸状の塑
性変形部から成り、前記剛体部の少なくとも上下端部を
前記塑性変形部よりも拡径にした金属製のダンパー主体
と、前記ダンパー主体の上端側の塑性変形部が上下動可
能に挿入された孔を有する筒状の建造物側受承体と、前
記ダンパー主体の下端側の塑性変形部が上下動可能に挿
入された孔を有する地盤側受承体とから構成され、前記
建造物側受承体と地盤側受承体が水平方向に相対移動し
たときに、各受承体における孔の開放側端部構成壁と剛
体部の拡径部分との当接部を支点としてダンパー主体の
塑性変形部が各受承体の孔から引抜かれる方向に移動す
るようにしている。[Means for Solving the Problems] Seismic isolation for buildings according to the present invention
The damper of the device is composed of a rigid body part having high rigidity and the rigid body part.
A shaft-shaped plastic projecting at the upper and lower ends and having a rigidity less than that
The rigid body part consists of at least the upper and lower ends.
Mainly made of a metal damper whose diameter is larger than that of the plastically deformed portion
And the plastic deformation part on the upper end side of the damper main body can move up and down.
A cylindrical building-side receptacle with a hole inserted in the
The plastic deformation part on the lower end side of the damper is inserted so that it can move up and down.
And a ground-side receiving body having an inserted hole,
The building-side bearing and the ground-side bearing move relative to each other in the horizontal direction.
The open end of the hole in each receptacle and the rigid wall
The main part of the damper is
The plastically deformed part moves in the direction to be pulled out from the hole of each receiving body.
I am trying to do it.
【０００７】[0007]
【作用】この発明は次のように作用する。地盤側受承体
と建造物側受承体とが水平方向に相対移動すべく振動状
態になると、各受承体における孔の開放側端部構成壁と
剛体部（剛体）の拡径部分との当接部分を支点として、
ダンパー主体の塑性変形部（塑性変形体）が各受承体の
孔から引抜かれる方向に移動する。したがって、上記振
動状態において、ダンパー主体の屈曲位置は変化するこ
ととなり、従来の技術の欄に記載したもののようにダン
パー主体に作用する力が一部に集中しないものとなる。The present invention operates as follows. When the ground-side receiving body and the building-side receiving body are in an oscillating state so as to move horizontally relative to each other, the opening-side end forming wall of each receiving body and the expanded portion of the rigid body (rigid body) With the abutting part of as a fulcrum,
The plastically deformable portion (plastically deformable body) mainly composed of the damper moves in the direction of being pulled out from the hole of each receiving body. Therefore, in the above-mentioned vibration state, the bending position of the damper main body changes, and the force acting on the damper main body does not concentrate on a part like the one described in the section of the related art.
【０００８】[0008]
【実施例】以下、この発明の構成を実施例として示した
図面に従って説明する。 （実施例１）この実施例の建造物用免震装置のダンパー
は、図１に示すように、金属製のダンパー主体４と、前
記ダンパー主体４の上端部を上下動のみ可能に支持する
建造物側受承体１と、前記ダンパー主体４の下端部を上
下動のみ可能に支持する地盤側受承体２とから構成され
ている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the drawings shown as embodiments. (Embodiment 1) As shown in FIG. 1, a damper of a seismic isolation device for a building according to this embodiment is a construction in which a metallic damper main body 4 and an upper end portion of the damper main body 4 are supported so as to be only vertically movable. It is composed of an object-side receiver 1 and a ground-side receiver 2 that supports the lower end of the damper main body 4 so that it can move only vertically.
【０００９】建造物側受承体１は全体として鋼材により
構成されており、同図に示すように、建造物側に取付け
るための固定部１１を具備した円筒状の主体１０と、前
記主体１０の内周面に固定配設されたリング状の支持具
１２により構成されている。地盤側受承体２は、図１に
示すように、主体２０と固定部２１と支持具２２につい
ては上記建造物側受承体１の主体１０と固定部１１支持
具１２と同様の構成としてある。The building-side receiving body 1 is made of steel as a whole, and as shown in the figure, a cylindrical main body 10 having a fixing portion 11 for mounting on the building side, and the main body 10 described above. It is constituted by a ring-shaped support tool 12 fixedly arranged on the inner peripheral surface of the. As shown in FIG. 1, the ground side receiving body 2 has the same structure as the main body 10 and the fixing portion 11 supporting tool 12 of the building side receiving body 1 with respect to the main body 20, the fixing portion 21, and the supporting tool 22. is there.
【００１０】尚、上記した支持具１２，２２はその内周
部をＲ状に形成してあり、これにより、ダンパー主体４
の曲げ半径が小さなものとならないようにしてある。ダ
ンパー主体４は、鋼材により構成されており、図１に示
すように、剛体部４０と、前記剛体部４０の上下端に突
設された軸状の塑性変形部４１とから構成してあり、更
に、前記剛体部４０を、同図に示すように、上記塑性変
形部４１より大きな直径の胴部４２と、これの上下端に
設けられた張出部４３とから構成している。Incidentally, the above-mentioned supporting members 12 and 22 are formed with an R-shaped inner peripheral portion, whereby the damper main body 4 is formed.
The bending radius of is not small. The damper main body 4 is made of a steel material, and as shown in FIG. 1, is made up of a rigid body portion 40 and a shaft-shaped plastically deformable portion 41 projecting from the upper and lower ends of the rigid body portion 40. Further, as shown in the figure, the rigid body portion 40 is composed of a body portion 42 having a diameter larger than that of the plastically deformable portion 41, and overhang portions 43 provided at the upper and lower ends thereof.
【００１１】前記張出部４３の直径は円筒状の主体１０
の外径よりも大きく設定してあり、図１に示す如く建造
物側基礎Ａ及び地盤側基礎Ｂ間での施工状態において、
各張出部４３が各受承体の主体１０，２０の端部に近設
（接触させておいてもよい）するように位置させてあ
る。前記塑性変形部４１は、その外径を上記した支持具
１２の内径と略一致させてあり、図１に示した施工状態
では、塑性変形部４１の端部が建造物側基礎Ａ又は地盤
側基礎Ｂの面から一定距離だけ離れるようにしてある。The diameter of the overhanging portion 43 is a cylindrical main body 10.
It is set larger than the outer diameter of, and as shown in Fig. 1, in the construction state between the building side foundation A and the ground side foundation B,
Each of the overhanging portions 43 is positioned so as to be provided (may be in contact) with the ends of the main bodies 10, 20 of the respective receiving bodies. The plastic deformation portion 41 has an outer diameter substantially matched with the inner diameter of the above-described support tool 12, and in the construction state shown in FIG. 1, the end portion of the plastic deformation portion 41 is the building side foundation A or the ground side. It is arranged to be separated from the surface of the foundation B by a certain distance.
【００１２】尚、ダンパー機能は、この鋼材により構成
された塑性変形部４１の塑性変形域の変形によりなされ
る。この建造物用免震装置のダンパーは上記のように構
成してあるから、地盤側受承体２と建造物側受承体１と
が水平方向に相対移動すべく振動状態になって、図２に
示す如く各受承体における主体１０，２０の端部と剛体
部４０の張出部４３とが当接すると、この当接部分を支
点として、ダンパー主体４の各塑性変形部４１が各受承
体から引抜かれる方向に移動する（塑性変形部４１はそ
れぞれ図２の二点鎖線で示した状態から実線で示した状
態に移動する）。つまり、上記振動状態において、ダン
パー主体４の塑性変形部４１の屈曲位置は図２に示した
Ｈの範囲で変化することとなり、従来の技術の欄に記載
したもののようにダンパー主体に作用する力が一部に集
中しないものとなる。The damper function is performed by the deformation of the plastic deformation portion 41 of the plastic deformation portion 41. Since the damper of the seismic isolation device for the building is configured as described above, the ground-side receiving body 2 and the building-side receiving body 1 are in a vibrating state so as to relatively move in the horizontal direction. As shown in FIG. 2, when the ends of the main bodies 10 and 20 of each receiving body and the overhanging portion 43 of the rigid body portion 40 come into contact with each other, the plastic deformation portions 41 of the damper main body 4 are brought into contact with each other by using this contact portion as a fulcrum. It moves in the direction in which it is pulled out from the receiving body (the plastic deformation portion 41 moves from the state shown by the two-dot chain line in FIG. 2 to the state shown by the solid line). That is, in the above-mentioned vibration state, the bending position of the plastically deformable portion 41 of the damper main body 4 changes within the range of H shown in FIG. Will not be concentrated in part.
【００１３】したがって、この建造物用免震装置のダン
パーは従来の技術の欄に記載したもののようにダンパー
主体４に作用する力が一部に集中しないものとなるか
ら、長期間使用できることとなる。 （第２実施例）この実施例の建造物用免震装置のダンパ
ーは、図３に示すように、建造物側受承体１及び地盤側
受承体２については上記第１実施例のものと同様の構成
とし、ダンパー主体４の剛体部４０を外径が主体１０及
び主体２０の外径よりも大きい円柱体（中空でもよい）
により構成している。そして、前記剛体部４０の上下面
外周部を主体１０，２０の端部に対向（接触でもよい）
させている。Therefore, the damper of the seismic isolation device for this structure can be used for a long time because the force acting on the damper main body 4 is not concentrated on a part like the one described in the section of the prior art. .. (Second Embodiment) As shown in FIG. 3, the damper of the seismic isolation device for a building of this embodiment is the same as that of the first embodiment for the building-side receiving body 1 and the ground-side receiving body 2. The rigid body portion 40 of the damper main body 4 has the same configuration as that of the columnar body whose outer diameter is larger than the outer diameters of the main body 10 and the main body 20 (may be hollow).
It is composed by. Then, the outer peripheral portions of the upper and lower surfaces of the rigid body portion 40 are opposed (may be in contact) to the end portions of the main bodies 10 and 20.
I am letting you.
【００１４】したがって、この実施例のものでは、塑性
変形部４１を各受承体から引抜く力は剛体部４０の上下
面と主体１０，２０の端部との当接により生じることと
なり、ダンパー主体４の各塑性変形部４１は各受承体か
ら引抜かれる方向に移動する（塑性変形部４１はそれぞ
れ図４の二点鎖線で示した状態から実線で示した状態に
移動する）。つまり、上記振動状態において、ダンパー
主体４の塑性変形部４１の屈曲位置は図４に示したＨの
範囲で変化することとなり、従来の技術の欄に記載した
もののようにダンパー主体に作用する力が一部に集中し
ないものとなる。Therefore, in this embodiment, the force for pulling out the plastically deformable portion 41 from each receiving body is generated by the contact between the upper and lower surfaces of the rigid body portion 40 and the ends of the main bodies 10 and 20, and the damper. Each plastically deformable portion 41 of the main body 4 moves in the direction of being pulled out from each receiving body (the plastically deformable portion 41 moves from the state shown by the two-dot chain line in FIG. 4 to the state shown by the solid line). That is, in the above-mentioned vibration state, the bending position of the plastic deformation portion 41 of the damper main body 4 changes within the range of H shown in FIG. 4, and the force acting on the damper main body as described in the section of the related art. Will not be concentrated in part.
【００１５】尚、上記したダンパー主体４を、図５及び
図６に示す如く、一本の鋼製の棒体４５（手段の欄の塑
性変形体と対応）に鋼製の環状の剛体４６を密嵌して構
成させてもよく、この構成を採用した場合、例えば、図
７及び図８に示すように棒体４５に対する剛体４６の位
置を調節して剛体４６が主体２０にのみ当接するものと
することができ、逆に剛体４６が主体１０にのみ当接す
るものとすることができるから、建造物用免震装置のダ
ンパーの設計が自由且つ容易になる。As shown in FIGS. 5 and 6, a single steel rod 45 (corresponding to the plastically deformable body in the column of means) is provided with an annular rigid body 46 made of steel. The structure may be closely fitted, and when this structure is adopted, for example, as shown in FIGS. 7 and 8, the position of the rigid body 46 with respect to the rod body 45 is adjusted so that the rigid body 46 contacts only the main body 20. Since the rigid body 46 can only contact the main body 10 on the contrary, the damper of the seismic isolation device for a building can be freely and easily designed.
【００１６】他方、上記実施例では、ダンパー主体４を
鋼材により構成したが、これに限定されることなく、黄
銅材により構成してもよいし、また、一定の応力を有す
る金属材料であれば全て採用することができる。On the other hand, although the damper main body 4 is made of steel in the above embodiment, it is not limited to this and may be made of brass, or any metallic material having a certain stress may be used. All can be adopted.
【００１７】[0017]
【発明の効果】この発明は上記のような構成であるか
ら、次の効果を有する。従来の技術の欄に記載したもの
のようにダンパー主体に作用する力が一部に集中しない
ものとなるから、長期間使用できる建造物用免震装置の
ダンパーを提供できた。The present invention having the above-mentioned structure has the following effects. Since the force acting mainly on the damper is not concentrated on a part like the one described in the section of the related art, it was possible to provide a damper for a building seismic isolation device that can be used for a long period of time.
【図１】この発明の第１実施例の建造物用免震装置のダ
ンパーの断面図。FIG. 1 is a sectional view of a damper of a seismic isolation device for buildings according to a first embodiment of the present invention.
【図２】図１に示したダンパーを構成する地盤側受承体
と建造物側受承体とが水平方向に相対移動した状態を示
した図。FIG. 2 is a diagram showing a state in which a ground-side receiving body and a building-side receiving body that constitute the damper shown in FIG. 1 are relatively moved in a horizontal direction.
【図３】この発明の第２実施例の建造物用免震装置のダ
ンパーの断面図。FIG. 3 is a sectional view of a damper of a seismic isolation device for buildings according to a second embodiment of the present invention.
【図４】図３に示したダンパーを構成する地盤側受承体
と建造物側受承体とが水平方向に相対移動した状態を示
した図。FIG. 4 is a diagram showing a state in which a ground-side receiving body and a building-side receiving body that form the damper shown in FIG. 3 are relatively moved in the horizontal direction.
【図５】この発明の他の実施例における建造物用免震装
置のダンパーの断面図。FIG. 5 is a sectional view of a damper of a building seismic isolation device according to another embodiment of the present invention.
【図６】図５に示したダンパーを構成する地盤側受承体
と建造物側受承体とが水平方向に相対移動した状態を示
した図。FIG. 6 is a diagram showing a state in which a ground-side receiving body and a building-side receiving body that constitute the damper shown in FIG. 5 are relatively moved in the horizontal direction.
【図７】この発明の他の実施例における建造物用免震装
置のダンパーの断面図。FIG. 7 is a sectional view of a damper of a building seismic isolation device according to another embodiment of the present invention.
【図８】図７に示したダンパーを構成する地盤側受承体
と建造物側受承体とが水平方向に相対移動した状態を示
した図。8 is a diagram showing a state in which a ground-side receiving body and a building-side receiving body that constitute the damper shown in FIG. 7 are relatively moved in the horizontal direction.
【図９】従来の建造物用免震装置のダンパーの断面図。FIG. 9 is a sectional view of a damper of a conventional seismic isolation device for a building.
１ 建造物側受承体 ２ 地盤側受承体 ４ ダンパー主体 ４０ 剛体部 ４１ 塑性変形部 ４５ 棒体 ４６ 剛体 1 Building side receiving body 2 Ground side receiving body 4 Damper main body 40 Rigid body part 41 Plastic deformation part 45 Bar body 46 Rigid body
Claims (2)
端に突設され且つこれよりも剛性が小さい軸状の塑性変
形部から成り、前記剛体部の少なくとも上下端部を前記
塑性変形部よりも拡径にした金属製のダンパー主体と、
前記ダンパー主体の上端側の塑性変形部が上下動可能に
挿入された孔を有する筒状の建造物側受承体と、前記ダ
ンパー主体の下端側の塑性変形部が上下動可能に挿入さ
れた孔を有する地盤側受承体とから構成され、前記建造
物側受承体と地盤側受承体が水平方向に相対移動したと
きに、各受承体における孔の開放側端部構成壁と剛体部
の拡径部分との当接部を支点としてダンパー主体の塑性
変形部が各受承体の孔から引抜かれる方向に移動するよ
うにしたことを特徴とする建造物用免震装置のダンパ
ー。1. A rigid body portion having a high rigidity and a shaft-shaped plastically deformable portion projecting from the upper and lower ends of the rigid body portion and having a rigidity lower than that, at least the upper and lower end portions of the rigid body portion being the plastically deformable portion. With a metal damper main body that has a larger diameter than
A cylindrical building-side receiving body having a hole in which a plastic deformation portion on the upper end side of the damper main body is vertically movable is inserted, and a plastic deformation portion on the lower end side of the damper main body is vertically movable. And a ground-side receiving body having a hole, and when the building-side receiving body and the ground-side receiving body move relative to each other in the horizontal direction, an opening-side end forming wall of the hole in each receiving body, The damper of the seismic isolation device for buildings, characterized in that the plastically deformable portion mainly composed of the damper is moved in a direction of being pulled out from the hole of each receiving body with the contact portion of the rigid body portion with the expanded diameter portion as a fulcrum. ..
剛体よりも剛性が小さい棒状の塑性変形体から成り、前
記剛体の少なくとも上下端部を前記塑性変形体よりも拡
径にした金属製のダンパー主体と、前記ダンパー主体の
上端側の塑性変形体が上下動可能に挿入された孔を有す
る筒状の建造物側受承体と、前記ダンパー主体の下端側
の塑性変形部が上下動可能に挿入された孔を有する地盤
側受承体とから構成され、前記建造物側受承体と地盤側
受承体が水平方向に相対移動したときに、各受承体にお
ける孔の開放側端部構成壁と剛体の拡径部分との当接部
を支点としてダンパー主体の塑性変形部が各受承体の孔
から引抜かれる方向に移動するようにしたことを特徴と
する建造物用免震装置のダンパー。2. A metal body in which an annular rigid body and a rod-shaped plastically deformable body that is tightly penetrated by the rigid body and has a rigidity lower than that of the rigid body, wherein at least upper and lower ends of the rigid body have a diameter larger than that of the plastically deformable body. Of the damper main body, a cylindrical building-side receiving body having a hole into which the plastic deformation body on the upper end side of the damper main body is vertically movable, and a plastic deformation portion on the lower end side of the damper main body move up and down. And a ground-side receiving body having a hole that can be inserted therein, and when the building-side receiving body and the ground-side receiving body relatively move in the horizontal direction, the opening side of the hole in each receiving body The building-use excluding structure characterized in that the plastically deformable portion mainly composed of the damper is moved in the direction of being pulled out from the hole of each receiving body with the contact portion between the end constituting wall and the expanded diameter portion of the rigid body as a fulcrum. Seismic damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4016841A JP3041463B2 (en) | 1992-01-31 | 1992-01-31 | Damper for seismic isolation device for buildings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4016841A JP3041463B2 (en) | 1992-01-31 | 1992-01-31 | Damper for seismic isolation device for buildings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05214840A true JPH05214840A (en) | 1993-08-24 |
| JP3041463B2 JP3041463B2 (en) | 2000-05-15 |
Family
ID=11927439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4016841A Expired - Fee Related JP3041463B2 (en) | 1992-01-31 | 1992-01-31 | Damper for seismic isolation device for buildings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3041463B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240488A (en) * | 2007-03-29 | 2008-10-09 | Kajima Corp | Concrete type bar-shaped damper structure |
-
1992
- 1992-01-31 JP JP4016841A patent/JP3041463B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240488A (en) * | 2007-03-29 | 2008-10-09 | Kajima Corp | Concrete type bar-shaped damper structure |
| JP4735585B2 (en) * | 2007-03-29 | 2011-07-27 | 鹿島建設株式会社 | Concrete rod-shaped damper structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3041463B2 (en) | 2000-05-15 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |