JPH0742723B2 - Damping method for structure and damping device using damping device - Google Patents
Damping method for structure and damping device using damping deviceInfo
- Publication number
- JPH0742723B2 JPH0742723B2 JP5706989A JP5706989A JPH0742723B2 JP H0742723 B2 JPH0742723 B2 JP H0742723B2 JP 5706989 A JP5706989 A JP 5706989A JP 5706989 A JP5706989 A JP 5706989A JP H0742723 B2 JPH0742723 B2 JP H0742723B2
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- JP
- Japan
- Prior art keywords
- damping
- piston
- cylinder
- oil passage
- addition device
- 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.)
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、構造物の柱梁架構（柱梁等の構造部材によっ
て構成される構造物の骨組をいうが、本願において、単
に柱梁架構というときは、原則として、１つの構面を形
成する個々の柱梁架構をいうものとする）内に設置され
る減衰付加装置について、減衰係数が異なる２以上の減
衰付加装置を、構造物全体として分散させて配置するこ
とにより、地震や風などによる構造物の振動を低減させ
る制震方法および該制震方法に使用する減衰付加装置の
構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention refers to a pillar-beam frame of a structure (a frame of a structure composed of structural members such as a pillar-beam. In that case, as a general rule, it is assumed that individual column-beam frames that form one frame are included), and two or more damping addition devices with different damping coefficients are installed in the entire structure. The present invention relates to a damping method for reducing the vibration of a structure due to an earthquake or a wind by arranging the elements in a distributed manner and a damping addition device used in the damping method.
出願人は構造物の柱梁架構内に、ブレースや壁などの形
で可変剛性要素を組み込み、可変剛性要素自体の剛性、
あるいは架構本体と可変剛性要素との連結状態を可変と
し、地震や風などの振動外力に対し、振動外力の特性を
コンピューターにより解析して、非共振となるよう構造
物の剛性を変化させて構造物の安全を図る能動的制震シ
ステムおよび可変剛性構造を種々提案している（例えば
特開昭62−268479号、特開昭63−114770号、特開昭63−
114771号など）。The applicant has incorporated the variable rigidity element in the form of brace or wall in the column beam structure of the structure, and the rigidity of the variable rigidity element itself,
Alternatively, the connection state between the frame body and the variable rigidity element is made variable, the characteristics of the vibration external force are analyzed by a computer against the vibration external force such as earthquake and wind, and the rigidity of the structure is changed so that it does not resonate. Various active vibration control systems and variable rigidity structures have been proposed for safety of objects (for example, JP-A-62-268479, JP-A-63-114770, JP-A-63-63).
No. 114771).
ところで、従来の能動的制震システムは、主として地震
動などの卓越周期と構造物の固有振動数（通常、１次の
固有振動数が問題となる場合が多い）との関係に着目
し、卓越周期に対し、構造物の固有振動数を能動的にず
らすことにより、共振現象を避け、応答量の低減を図っ
ている。By the way, the conventional active seismic control system mainly focuses on the relationship between the predominant period such as seismic motion and the natural frequency of the structure (usually, the first natural frequency is often a problem). On the other hand, by actively shifting the natural frequency of the structure, the resonance phenomenon is avoided and the response amount is reduced.
しかし、特に地震動などの場合、非定常振動であること
から、例えば卓越周期がはっきりしない場合や卓越周期
が複数ある場合など、必ずしも最適な制御とならない場
合も考えられる。However, especially in the case of earthquake motion or the like, since it is unsteady vibration, it may be considered that the optimal control is not necessarily performed, for example, when the prominent period is not clear or when there are plural prominent periods.
また、能動的制震システムの場合、制御用のコンピュー
ターの他、各種センサーを用いるため、何らかの異常が
あった場合に対し、種々の安全維持機構を必要とするな
ど制御機構が複雑となり、コスト面での問題も考えられ
る。その他、制御の遅れにより十分な効果を発揮するま
で時間を要するような場合も考えられる。In addition, in the case of active seismic control system, various sensors are used in addition to the control computer, so if there is any abnormality, various control systems are required, such as the need for various safety maintenance mechanisms. There may be problems with In addition, there may be a case where it takes time to exert a sufficient effect due to control delay.
本発明はコンピュータープログラムなどによる制御シス
テムを必要としない受動的制震を可能とするものであ
り、シリンダー内で往復動する両ロッド形式のピストン
を有する減衰付加装置を用い、減衰係数の異なる装置を
構造物全体として分散させて柱梁架構内に適切に配置す
ることにより、小さい振動から大きな振動まで安定した
大きな減衰効果を与え、構造物の安全性を確保するとと
もに、快適な居住空間を実現することを目的としてい
る。INDUSTRIAL APPLICABILITY The present invention enables passive damping without requiring a control system by a computer program or the like, and uses a damping addition device having a double rod type piston that reciprocates in a cylinder, and a device with a different damping coefficient can be used. By distributing the structure as a whole and placing it appropriately in the beam structure, it gives a stable and large damping effect from small vibrations to large vibrations, ensuring the safety of the structure and realizing a comfortable living space. Is intended.
以下に、本発明を実施例に対応する符号を用いて説明す
る。Hereinafter, the present invention will be described using reference numerals corresponding to the embodiments.
本発明の減衰付加装置１は第２図の概念図に示すよう
に、シリンダー２内で往復動する両ロッド形式のピスト
ン３の左右に油圧室５を設け、この左右の油圧室５を連
結する油路６に固定オリフィス７を設けたもので、シリ
ンダー２とピストン３を構造物の柱梁架構を構成する異
なる構造部材（柱、梁、ブレースまたはこれらを構成す
る部材等）に固定し、柱梁架構の変形により前記シリン
ダー２とピストン３が相対移動する。As shown in the conceptual diagram of FIG. 2, the damping addition device 1 of the present invention is provided with hydraulic chambers 5 on the left and right of a double rod type piston 3 that reciprocates in a cylinder 2 and connects the left and right hydraulic chambers 5. A fixed orifice 7 is provided in the oil passage 6, and the cylinder 2 and the piston 3 are fixed to different structural members (pillars, beams, braces, or members constituting these) that form the column beam frame of the structure, Due to the deformation of the beam frame, the cylinder 2 and the piston 3 move relative to each other.
この減衰付加装置１は、固定オリフィス７の設計（形
状、寸法、その他）により、任意の減衰係数ｃを実現す
ることができる。The damping addition device 1 can realize an arbitrary damping coefficient c by the design (shape, size, etc.) of the fixed orifice 7.
また、固定オリフィス７により、レイノルズ数が大きな
流れ（乱流）を生み、抵抗力として、シリンダー２とピ
ストン３の相対速度ｖの２乗に比例する減衰力が得ら
れ、この装置１を柱梁架構内に設置した場合、振動の大
きさにより、その柱梁架構の減衰定数ｈが変化する。Further, the fixed orifice 7 produces a flow (turbulence) having a large Reynolds number, and a damping force proportional to the square of the relative velocity v of the cylinder 2 and the piston 3 is obtained as a resistance force. When installed in the frame, the damping constant h of the column-beam frame changes depending on the magnitude of vibration.
第３図のグラフはこのような個々の柱梁架構の特性を４
種類の減衰係数c1〜c4（c1＜c2＜c3＜c4）について概念
的に示したものであり、前述のようにシリンダー２とピ
ストン３の相対速度ｖの２乗に比例する減衰力が得ら
れ、柱梁架構に対し最大の減衰定数ｈを与える付近で、
その柱梁架構の固有周期が短い方（T0＞T1＞T2＞T3＞
T4）へ移行し、減衰定数ｈも徐々に低下する。また、グ
ラフからも明らかなように、振動レベル、すなわち相対
速度ｖが大きくなるに従って、最大の減衰効果を与える
減衰付加装置の減衰係数ｃは小さなものとなる。The graph in Fig. 3 shows the characteristics of such individual beam-column structures.
This is a conceptual representation of the types of damping coefficients c 1 to c 4 (c 1 <c 2 <c 3 <c 4 ) and is proportional to the square of the relative velocity v of the cylinder 2 and the piston 3 as described above. Near the maximum damping constant h for the beam-column structure,
One with a shorter natural period of the column-beam structure (T 0 ＞ T 1 ＞ T 2 ＞ T 3 ＞
Migrate to T 4), the damping constant h is also gradually reduced. Further, as is apparent from the graph, as the vibration level, that is, the relative speed v increases, the damping coefficient c of the damping addition device that gives the maximum damping effect becomes smaller.
本発明の制震方法は、このような特性を生かしたもの
で、減衰係数の異なる装置１を構造物内において適切に
分散配置することにより、小さな振動から大きな振動ま
で、安定した大きな減衰効果を得ることができる。ま
た、振動レベルが大きくなるに従って、ブレースや壁な
どの可変剛性要素が効きはじめ、剛性が徐々に高くな
り、固有周期が変化する。この性質を利用することによ
り、非共振化による構造物の応答低減も可能としてい
る。The seismic control method of the present invention takes advantage of such characteristics, and by appropriately disposing the devices 1 having different damping coefficients in a structure, a stable large damping effect can be obtained from small vibrations to large vibrations. Obtainable. Also, as the vibration level increases, variable stiffness elements such as braces and walls begin to work, the stiffness gradually increases, and the natural period changes. By utilizing this property, it is possible to reduce the response of the structure by making it non-resonant.
次に、図示した実施例について説明する。 Next, the illustrated embodiment will be described.
第１図は本発明の一実施例としての、１つの階における
架構配置（伏図）を示したもので、減衰係数c1〜c4を有
する４種類の減衰付加装置1a,1b,1c、1dを対称に近い形
で分散配置し、後述するような形で個々の柱梁架構内に
設置したブレースやモーメント抵抗柱、壁などの可変剛
性要素を、振動レベルに応じ、徐々に効かせるようにし
ている。なお、図中13は柱梁架構本体12を構成する柱、
14は大梁を示す。FIG. 1 shows a frame layout (floor plan) on one floor as one embodiment of the present invention, in which four types of damping addition devices 1a, 1b, 1c having damping coefficients c 1 to c 4 , 1d is distributed in a nearly symmetric form, and variable stiffness elements such as braces, moment resistance columns, and walls installed in individual beam-frame structures in a manner to be described later gradually work according to the vibration level. I have to. In addition, 13 in the figure is a pillar constituting the main body 12 of the beam frame,
14 indicates a large beam.
減衰付加装置１は前述した第２図に示すように、シリン
ダー２内を往復動する両ロッド形式のピストン３を有す
る油圧式の装置であり、左右の油圧室５を結ぶ油路６に
設けた固定オリフィス７の設計により、それぞれ減衰係
数c1〜c4を有する装置1a〜1dとすることができる。As shown in FIG. 2 described above, the damping addition device 1 is a hydraulic device having a double rod type piston 3 that reciprocates in a cylinder 2, and is provided in an oil passage 6 connecting left and right hydraulic chambers 5. the design of the fixed orifice 7 can be a device 1a~1d having respective damping coefficients c 1 to c 4.
第３図において、例えば架構の振動レベルが比較的小さ
い振動レベルであるv1（相対速度）の場合には、減衰係
数c1の減衰付加装置1aが固定に近い状態となり、減衰付
加装置1aを介在させたブレースまたは壁などの可変剛性
要素の剛性が柱梁架構本体の剛性に加わり、固有周期は
T1となる。また、減衰性に関しては、減衰係数c2の減衰
付加装置1bによる寄与が最も大きく、減衰係数c4の減衰
付加装置1dはピストン３の移動がほとんどフリーに近い
状態で、構造物の減衰性に対する寄与は小さい。In FIG. 3, for example, when the vibration level of the frame is a relatively small vibration level v 1 (relative velocity), the damping addition device 1a having the damping coefficient c 1 is in a state close to fixed, and the damping addition device 1a is Stiffness of variable stiffness elements such as intervening braces or walls adds to the stiffness of the main body of the beam / column structure, and the natural period is
It becomes T 1 . Regarding the damping property, the contribution of the damping addition device 1b having the damping coefficient c 2 is largest, and the damping addition device 1d having the damping coefficient c 4 contributes to the damping property of the structure when the movement of the piston 3 is almost free. The contribution is small.
一方、比較的大きな振動レベルであるv2の場合には、減
衰係数c1〜c3の減衰付加装置1a〜1cが固定に近い状態と
なり、固有周期はT3となる。また、減衰性に関しては、
減衰係数c4の減衰付加装置1dによる寄与が最も大きく、
減衰係数c1の減衰付加装置1aによる寄与が最も小さくな
る。On the other hand, in the case of v 2 is a relatively large vibration level, the attenuation additional device 1a~1c damping coefficients c 1 to c 3 is a state close to a fixed, the natural period becomes T 3. Also, regarding the damping property,
The contribution of the damping addition device 1d of the damping coefficient c 4 is the largest,
The contribution of the damping addition device 1a to the damping coefficient c 1 is the smallest.
このように、装置１の減衰係数ｃにより、可変剛性要素
の効き出す振動レベルが異なり、これを調整することに
より、例えば常に平均値的な減衰定数h0を構造物に与
え、安定した減衰性を発揮させることができる。また、
第３図に示すように振動レベルが大きくなるに従って、
構造物の固有周期Ｔが徐々に短くなるため、地震動など
の振動外乱に対し構造物が共振しはじめ、構造物の応答
が徐々に大きくなると、構造物の固有周期が変動して、
非共振の状態に移行するため、共振による大きな被害を
防ぐことができる。As described above, the effective vibration level of the variable stiffness element varies depending on the damping coefficient c of the device 1, and by adjusting this, for example, an average damping constant h 0 is always given to the structure, and stable damping performance is obtained. Can be demonstrated. Also,
As the vibration level increases, as shown in Fig. 3,
Since the natural period T of the structure is gradually shortened, the structure begins to resonate against vibration disturbance such as earthquake motion, and when the response of the structure gradually increases, the natural period of the structure changes,
Since the state shifts to the non-resonant state, it is possible to prevent significant damage due to resonance.
第４図は振動レベルと固有周期の関係を示したもので、
振動レベルにより、装置の減衰抵抗力が変化し、これに
従って可変剛性がなされる。Figure 4 shows the relationship between vibration level and natural period.
The vibration level changes the damping resistance of the device, which results in variable stiffness.
第５図〜第12図は本発明における個々の減衰付加装置の
構造物架構に対する適用位置の例を示したものである。FIG. 5 to FIG. 12 show examples of the application positions of the individual damping addition devices in the present invention to the structure frame.
第５図の例では架構本体12としての柱梁架構と、可変剛
性要素としての逆Ｖ型ブレース15の間に減衰付加装置１
を介在させている。In the example of FIG. 5, the damping addition device 1 is provided between the column beam frame as the frame body 12 and the inverted V-shaped brace 15 as the variable rigidity element.
Is intervening.
第６図の例は架構本体12としての柱梁架構と、上下の梁
14より立設したまたは垂下させたフレーム21どうしの間
に減衰付加装置１を介在させて、可変剛性要素としての
モーメント抵抗フレームを構成した場合である。The example of FIG. 6 shows a column-beam structure as the frame body 12 and upper and lower beams.
This is a case where the damping addition device 1 is interposed between the frames 21 that are erected or hung from the frame 14 to form a moment resistance frame as a variable rigidity element.
第７図の例では架構本体12としての柱梁架構と、可変剛
性要素としてのRC耐震壁22との間に減衰付加装置１を介
在させている。In the example of FIG. 7, the damping addition device 1 is interposed between the column-beam frame as the frame body 12 and the RC seismic wall 22 as the variable rigidity element.
第８図の例は、免震構造物の基部に積層ゴムなどの免震
ゴム23と併用して減衰付加装置を設けた場合の例であ
り、減衰付加装置１が免震構造におけるダンパーの役割
を果たしている。この場合の可変剛性要素は構造物の基
礎と考えることができる。The example of FIG. 8 is an example in which a damping addition device is provided in combination with a seismic isolation rubber 23 such as laminated rubber at the base of the seismic isolation structure, and the damping addition device 1 serves as a damper in the seismic isolation structure. Plays. The variable stiffness element in this case can be considered the basis of the structure.
第９図の例では、架構本体12としての柱梁架構内に設け
たＸ型ブレース24を可変剛性要素としており、Ｘ型の中
央に減衰付加装置１を横向き（横型）に介在させてあ
る。In the example of FIG. 9, an X-shaped brace 24 provided in a column-beam frame as the frame body 12 is used as a variable rigidity element, and the damping addition device 1 is laterally (horizontally) interposed in the center of the X-type.
第10図の例は第９図の例と同様Ｘ型ブレース25に適用し
た例であり、第９図の例が減衰付加装置１を横向きに設
けた横型だったのに対し、本例では減衰付加装置を縦向
きに設け、縦型としている。The example of FIG. 10 is an example applied to the X-type brace 25 similarly to the example of FIG. 9, and the example of FIG. 9 is the horizontal type in which the damping addition device 1 is provided sideways, whereas in this example the damping is applied. The add-on device is installed vertically to make it vertical.
第11図の例は、第７図の例と同様、架構本体12としての
柱梁架構と、可変剛性要素としてのRC耐震壁26との間に
減衰付加装置１を介在させたものであるが、減衰付加装
置１を出入口などの開口部27の上方に設けた点に特徴を
有している。The example of FIG. 11 is similar to the example of FIG. 7 in that the damping addition device 1 is interposed between the column beam frame as the frame body 12 and the RC seismic wall 26 as the variable rigidity element. The feature is that the attenuation adding device 1 is provided above the opening 27 such as the entrance and exit.
第12図の例は、大架構におけるＸ型ブレース28の中央に
減衰付加装置１を介在させたもので、中間の大梁29とブ
レース28は分離されている。In the example of FIG. 12, the damping addition device 1 is interposed in the center of the X-type brace 28 in the large frame, and the middle girder 29 and the brace 28 are separated.
本発明の減衰付加装置は、架構本体と可変剛性要素との
間に介在させた場合において、ピストンの両側の油圧室
を連結する油路に設けたオリフィスにより油の流れに所
定の抵抗を与える構成を有し、このオリフィスの設計
（設定）により所定の減衰係数を実現し、振動レベルに
応じて抵抗力の形で構造物に減衰性を与えることができ
る。The damping addition device of the present invention, when interposed between the frame main body and the variable rigidity element, provides a predetermined resistance to the oil flow by the orifice provided in the oil passage connecting the hydraulic chambers on both sides of the piston. By designing (setting) this orifice, a predetermined damping coefficient can be realized, and damping can be given to the structure in the form of resistance force in accordance with the vibration level.
また、本発明の制震方法は、減衰係数の異なる２種以上
の減衰付加装置を、構造物全体として分散させて配置す
ることにより、ブレース、壁などの可変剛性要素を振動
レベルに応じて、徐々に効かせることができ、安定した
減衰性を確保するとともに、振動外乱に対する構造物の
共振を防ぎ、安全かつ快適な居住空間を実現することが
できる。Further, in the damping method of the present invention, by disposing two or more types of damping addition devices having different damping coefficients in a dispersed manner as a whole structure, variable rigidity elements such as braces and walls are arranged according to the vibration level. The effect can be gradually exerted, stable damping properties can be secured, resonance of the structure against vibration disturbance can be prevented, and a safe and comfortable living space can be realized.
すなわち、２以上の減衰付加装置の減衰係数が異なるこ
とで、可変剛性要素の効き出す振動レベルが異なり、こ
れを調整することにより、例えば常に平均値的な減衰定
数を構造物に与え、安定した減衰性を発揮させるといっ
たことが可能となり、また振動レベルが大きくなるに従
って、構造物の固有周期が徐々に短くなるため、地震動
などの振動外乱に対し構造物が共振しはじめ、構造物の
応答が徐々に大きくなると、構造物の固有周期が変動し
て、非共振の状態に移行し、共振による大きな被害を防
ぐことができる。That is, since the damping coefficient of the two or more damping addition devices is different, the effective vibration level of the variable rigidity element is different, and by adjusting this, for example, an average damping constant is always given to the structure to stabilize it. It becomes possible to exert damping properties, and as the vibration level increases, the natural period of the structure gradually shortens, so the structure begins to resonate against vibration disturbance such as earthquake motion, and the response of the structure When it gradually increases, the natural period of the structure fluctuates, and the structure shifts to a non-resonant state, so that large damage due to resonance can be prevented.
本発明の減衰付加装置は、シリンダー、ピストン等によ
り構成される外部エネルギーを使用しない受動型の装置
であり、またこの装置を使用した本発明の制震方法も受
動的制震機構を与えるものであるため、装置設置の際の
構造物の特性に応じた設計および調整を必要とするだけ
であり、複雑な制御システムや付帯設備を必要とせず、
能動的制震機構に比べ低コストで設置することができ
る。The damping addition device of the present invention is a passive type device that does not use external energy and is composed of a cylinder, a piston, etc., and the damping method of the present invention using this device also provides a passive damping mechanism. Therefore, it only requires design and adjustment according to the characteristics of the structure when installing the device, does not require a complicated control system or incidental equipment,
It can be installed at a lower cost than active damping systems.
第１図は本発明の制震方法における減衰係数の異なる減
衰付加装置の配置例を示す平面図、第２図は本発明の減
衰付加装置の概念図、第３図は本発明における柱梁架構
の特性を説明するためのグラフ、第４図は本発明におけ
る振動レベルと固有周期の関係を示すグラフ、第５図〜
第12図は本発明における個々の減衰付加装置の構造物の
個々の柱梁架構に対する適用位置の例を示す概要図であ
る。 １…減衰付加装置、２…シリンダー、３…ピストン、４
…ロッド、５…油圧室、６…油路、７…固定オリフィ
ス、12…柱梁架構本体、13…柱、14…梁、15…ブレースFIG. 1 is a plan view showing an arrangement example of damping addition devices having different damping coefficients in the damping method of the present invention, FIG. 2 is a conceptual diagram of the damping addition device of the present invention, and FIG. 3 is a beam-column structure of the present invention. 4 is a graph for explaining the characteristics of FIG. 4, FIG. 4 is a graph showing the relationship between the vibration level and the natural period in the present invention, FIG.
FIG. 12 is a schematic diagram showing an example of the application position of the structure of each damping addition device of the present invention to each column beam structure. 1 ... damping addition device, 2 ... cylinder, 3 ... piston, 4
... Rod, 5 ... Hydraulic chamber, 6 ... Oil passage, 7 ... Fixed orifice, 12 ... Column beam frame body, 13 ... Column, 14 ... Beam, 15 ... Brace
Claims (2)
る両ロッド形式のピストンと、前記ピストンの両側の油
圧室を連結する油路と、該油路に設けられ、装置に所定
の減衰係数を与える固定オリフィスとからなる減衰付加
装置を構造物の柱梁架構内設置し、これを構造物全体と
して複数個分散させて配置するとともに、前記複数個の
減衰付加装置として、減衰係数の異なる少なくとも２種
以上の減衰付加装置を用いることを特徴とする減衰付加
装置を用いた構造物の制震方法。1. A cylinder, a piston of a double rod type that reciprocates in the cylinder, an oil passage that connects hydraulic chambers on both sides of the piston, and an oil passage that is provided in the oil passage and has a predetermined damping coefficient for the device. A damping addition device composed of a fixed orifice to be provided is installed in a column-beam frame of a structure, and a plurality of the damping addition device are dispersed and arranged as a whole structure, and the plurality of damping addition devices have at least two different damping coefficients. A damping method for a structure using a damping addition device, characterized by using more than one damping addition device.
る両ロッド形式のピストンと、前記ピストンの両側に設
けられた油圧室と、前記両油圧室を連結する油路と、該
油路に設けられ、装置に所定の減衰係数を与える固定オ
リフィスとからなり、前記シリンダーとピストンを構造
物の柱梁架構を構成する異なる構造部材に固定し、柱梁
架構の変形により前記シリンダーとピストンが相対移動
するようにしたことを特徴とする構造物用減衰付加装
置。2. A cylinder, a double rod type piston reciprocating in the cylinder, hydraulic chambers provided on both sides of the piston, an oil passage connecting the both hydraulic chambers, and an oil passage provided in the oil passage. And a fixed orifice that gives the device a predetermined damping coefficient.The cylinder and piston are fixed to different structural members that make up the column beam frame of the structure, and the cylinder and piston move relative to each other due to the deformation of the column beam frame. A damping device for structures, characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5706989A JPH0742723B2 (en) | 1989-03-09 | 1989-03-09 | Damping method for structure and damping device using damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5706989A JPH0742723B2 (en) | 1989-03-09 | 1989-03-09 | Damping method for structure and damping device using damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02236326A JPH02236326A (en) | 1990-09-19 |
| JPH0742723B2 true JPH0742723B2 (en) | 1995-05-10 |
Family
ID=13045159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5706989A Expired - Lifetime JPH0742723B2 (en) | 1989-03-09 | 1989-03-09 | Damping method for structure and damping device using damping device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0742723B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5491938A (en) * | 1990-10-19 | 1996-02-20 | Kajima Corporation | High damping structure |
| JP3870287B2 (en) * | 1997-01-06 | 2007-01-17 | 北村 二郎 | Seismic isolation device, sliding bearing or seismic isolation structure |
-
1989
- 1989-03-09 JP JP5706989A patent/JPH0742723B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02236326A (en) | 1990-09-19 |
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