A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ROTARY INERTIAL MASS DAMPER
To provide a rotary inertial mass damper which can prevent a control force from instantaneously increasing when long period pulse-like earthquake waves are caused and, at the same time, can interrupt transmission of low amplitude earthquake waves of high frequency.SOLUTION: A rotary inertial mass damper includes: a ball screw 2: a ball screw nut 3; a rotary inertial mass 4; and a rotation transmitting mechanism 5 which is provided between the ball screw nut 3 and the rotary inertial mass 4, transmits rotation of the ball screw nut 3 to the rotary inertial mass 4 and, thereby, rotates the ball screw nut 3 and the rotary inertial mass 4 integrally. Therein, the rotation transmitting mechanism 5 has: a first rotary transmission restricting mechanism 7 which does not transmit rotation of the ball screw nut 3 to the rotary inertial mass 4 when a value of relative displacement amount in an axial line direction between the ball screw 2 and the ball screw nut 3 is less than a first set value; and a second rotary transmission restricting mechanism 8 which does not transmit rotation of the ball screw nut 3 to the rotary inertial mass 4 when a value of relative acceleration in an axial line direction between the ball screw 2 and the ball screw nut 3 exceeds a second set value.SELECTED DRAWING: Figure 1
【課題】長周期パルス状の地震波が生じた場合に制御力が瞬間的に大きくなることを防止することができるとともに、低振幅の高周波数の地震波の伝達を遮断することができる回転慣性質量ダンパーを提供する。【解決手段】ボールねじ２と、ボールねじナット３と、回転慣性質量４と、ボールねじナット３と回転慣性質量４との間に設けられ、ボールねじナット３の回転を回転慣性質量４に伝達させてボールねじナット３と回転慣性質量４とを一体に回転させる回転伝達機構５と、を有し、回転伝達機構５は、ボールねじ２とボールねじナット３との軸線方向の相対変位量の値が第１設定値未満であるとボールねじナット３の回転を回転慣性質量４に伝達させない第１回転伝達制限機構７と、ボールねじ２とボールねじナット３との軸線方向の相対加速度の値が第２設定値を超えると、ボールねじナット３の回転を回転慣性質量４に伝達させない第２回転伝達制限機構８と、を有する。【選択図】図１
ROTARY INERTIAL MASS DAMPER
To provide a rotary inertial mass damper which can prevent a control force from instantaneously increasing when long period pulse-like earthquake waves are caused and, at the same time, can interrupt transmission of low amplitude earthquake waves of high frequency.SOLUTION: A rotary inertial mass damper includes: a ball screw 2: a ball screw nut 3; a rotary inertial mass 4; and a rotation transmitting mechanism 5 which is provided between the ball screw nut 3 and the rotary inertial mass 4, transmits rotation of the ball screw nut 3 to the rotary inertial mass 4 and, thereby, rotates the ball screw nut 3 and the rotary inertial mass 4 integrally. Therein, the rotation transmitting mechanism 5 has: a first rotary transmission restricting mechanism 7 which does not transmit rotation of the ball screw nut 3 to the rotary inertial mass 4 when a value of relative displacement amount in an axial line direction between the ball screw 2 and the ball screw nut 3 is less than a first set value; and a second rotary transmission restricting mechanism 8 which does not transmit rotation of the ball screw nut 3 to the rotary inertial mass 4 when a value of relative acceleration in an axial line direction between the ball screw 2 and the ball screw nut 3 exceeds a second set value.SELECTED DRAWING: Figure 1
【課題】長周期パルス状の地震波が生じた場合に制御力が瞬間的に大きくなることを防止することができるとともに、低振幅の高周波数の地震波の伝達を遮断することができる回転慣性質量ダンパーを提供する。【解決手段】ボールねじ２と、ボールねじナット３と、回転慣性質量４と、ボールねじナット３と回転慣性質量４との間に設けられ、ボールねじナット３の回転を回転慣性質量４に伝達させてボールねじナット３と回転慣性質量４とを一体に回転させる回転伝達機構５と、を有し、回転伝達機構５は、ボールねじ２とボールねじナット３との軸線方向の相対変位量の値が第１設定値未満であるとボールねじナット３の回転を回転慣性質量４に伝達させない第１回転伝達制限機構７と、ボールねじ２とボールねじナット３との軸線方向の相対加速度の値が第２設定値を超えると、ボールねじナット３の回転を回転慣性質量４に伝達させない第２回転伝達制限機構８と、を有する。【選択図】図１
ROTARY INERTIAL MASS DAMPER
回転慣性質量ダンパー
MIYAMOTO AKIRA (author) / WATANABE KOICHI (author)
2022-12-02
Patent
Electronic Resource
Japanese