A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ASEISMIC BASE ISOLATION DAMPER
PROBLEM TO BE SOLVED: To provide an aseismic base isolation damper capable of preventing an excessive relative displacement in occurrence of earthquake while assuring base isolation function of aseismic base isolation support by making rotary inertia mass effect with rotary mass variable in response to a size of relative displacement between a foundation and a structure.SOLUTION: An aseismic base isolation damper of this invention is constituted by an inner cylinder 21 and a screw shaft 22a connected to a building 2 and a foundation 1; a ball nut 22c; and a rotation mass damper 10A including a rotation mass 23. An inner circumferential surface of the rotation mass 23 is provided with a pair of torque transmittance parts 32, 32 and a driving member 31 is arranged between them. The driving member 31 moves in an axial line direction as the ball nut 22c is rotated, and transmits a torque of the ball nut 22c to the rotation mass 23 through transmission parts 32 under a state in which one torque transmittance part 32 is pushed. With this arrangement as above, an effect of rotary inertia mass of the rotation mass 23 is realized and an excessive relative displacement between the foundation 1 and the building 2 in occurrence of earthquake is prevented.SELECTED DRAWING: Figure 3
【課題】地盤と構造物との相対変位の大きさに応じて、回転マスによる回転慣性質量効果を可変とすることにより、免震支承の免震機能を確保しながら、地震時における過大な相対変位を防止できる免震用ダンパを提供する。【解決手段】本発明の免震用ダンパは、建物２及び基礎１に連結される内筒２１及びねじ軸２２ａと、ボールナット２２ｃと、回転マス２３を備える回転マスダンパ１０で構成されている。回転マス２３の内周面には一対のトルク伝達部３２、３２が設けられ、それらの間に駆動部材３１が設けられている。駆動部材３１は、ボールナット２２ｃの回転に伴って軸線方向に移動し、一方のトルク伝達部３２を押圧した状態で、ボールナット２２ｃのトルクを伝達部３２を介して回転マス２３に伝達する。それにより、回転マス２３の慣性慣性質量効果が発揮され、地震時における基礎１と建物２との過大な相対変位が防止される。【選択図】図３
ASEISMIC BASE ISOLATION DAMPER
PROBLEM TO BE SOLVED: To provide an aseismic base isolation damper capable of preventing an excessive relative displacement in occurrence of earthquake while assuring base isolation function of aseismic base isolation support by making rotary inertia mass effect with rotary mass variable in response to a size of relative displacement between a foundation and a structure.SOLUTION: An aseismic base isolation damper of this invention is constituted by an inner cylinder 21 and a screw shaft 22a connected to a building 2 and a foundation 1; a ball nut 22c; and a rotation mass damper 10A including a rotation mass 23. An inner circumferential surface of the rotation mass 23 is provided with a pair of torque transmittance parts 32, 32 and a driving member 31 is arranged between them. The driving member 31 moves in an axial line direction as the ball nut 22c is rotated, and transmits a torque of the ball nut 22c to the rotation mass 23 through transmission parts 32 under a state in which one torque transmittance part 32 is pushed. With this arrangement as above, an effect of rotary inertia mass of the rotation mass 23 is realized and an excessive relative displacement between the foundation 1 and the building 2 in occurrence of earthquake is prevented.SELECTED DRAWING: Figure 3
【課題】地盤と構造物との相対変位の大きさに応じて、回転マスによる回転慣性質量効果を可変とすることにより、免震支承の免震機能を確保しながら、地震時における過大な相対変位を防止できる免震用ダンパを提供する。【解決手段】本発明の免震用ダンパは、建物２及び基礎１に連結される内筒２１及びねじ軸２２ａと、ボールナット２２ｃと、回転マス２３を備える回転マスダンパ１０で構成されている。回転マス２３の内周面には一対のトルク伝達部３２、３２が設けられ、それらの間に駆動部材３１が設けられている。駆動部材３１は、ボールナット２２ｃの回転に伴って軸線方向に移動し、一方のトルク伝達部３２を押圧した状態で、ボールナット２２ｃのトルクを伝達部３２を介して回転マス２３に伝達する。それにより、回転マス２３の慣性慣性質量効果が発揮され、地震時における基礎１と建物２との過大な相対変位が防止される。【選択図】図３
ASEISMIC BASE ISOLATION DAMPER
免震用ダンパ
KIDA HIDENORI (author) / NAKAMINAMI SHIGEKI (author) / TANAKA HISAYA (author)
2016-04-11
Patent
Electronic Resource
Japanese