VIBRATION RESISTANCE REINFORCING VIBRATION ISOLATION DEVICE OF BUILDING: Fid-Bau Portal

VIBRATION RESISTANCE REINFORCING VIBRATION ISOLATION DEVICE OF BUILDING

ASANO YUICHI

To provide a vibration resistance reinforcing vibration isolation device having a spring force generated by a viscous elastic body, and having an attenuation function for vibration by a hydraulic damper.SOLUTION: A vibration resistance reinforcing vibration isolation device 1 comprises a hydraulic damper 2, and a spring member 3 assembled to the hydraulic damper. A cylinder 4 of the hydraulic damper 2 is connected to a horizontal structural member or a column material, and a piston rod 5 is connected to the column material or the horizontal structural member. The spring member 3 comprises: a first support member 7 supported to an external periphery of the cylinder 4 by prescribed friction resistance; a second support member 8 fixed to the piston rod 5, and engaged with the first support member 7 so as to be relatively displaceable to an axial line direction within a prescribed range; and a viscous elastic body 9 interposed between both the support members 7, 8. The viscous elastic body 9 receives a shearing load by the relative displacement between the support members 7, 8. When the relative displacement between the first and second support members 7, 8 exceeds the prescribed range, the first support member 7 is relatively displaced to the cylinder 4 within the prescribed range.SELECTED DRAWING: Figure 1

【課題】粘弾性体によるばね力を有すると共に、油圧ダンパによる振動の減衰機能を有する耐震補強用制振装置を提供する。【解決手段】耐震補強用制振装置１は、油圧ダンパ２と、これに組み付けられるばね部材３とを具備する。油圧ダンパ２のシリンダ４は横架材又は柱材に連結され、ピストンロッド５は、柱材又は横架材に連結される。ばね部材３は、シリンダ４の外周に所定の摩擦抵抗をもって支持される第１の支持部材７と、ピストンロッド５に固定され第１の支持部材７と軸線方向に所定範囲で相対変位可能に係合される第２の支持部材８と、両支持部材７，８間に介設される粘弾性体９とを具備する。粘弾性体９は、支持部材７，８間の相対変位によりせん断荷重を受ける。第１の支持部材７，８間の相対変位が所定範囲を超えたとき、第１の支持部材７がシリンダ４に対して所定範囲で相対変位する。【選択図】図１

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