A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FRICTION DAMPER AND BASE ISOLATION BUILDING
To provide a friction damper which eliminates a need of high manufacturing accuracy to enable easy manufacturing, installation and construction, achieves effective reduction of shaking of small, medium, and large earthquakes with frictional force which follows displacement, and can suppress excessive displacement with a constant resistance force during a large earthquake while inhibiting increase of an acceleration rate of a base isolation building during a small or medium earthquake.SOLUTION: A friction damper includes: an intermediate steel plate 51 attached to a building; a pair of outer steel plates 52 attached to a basement and disposed so as to overlap with the intermediate steel plate 51 in a plate thickness direction; friction plates 53 which are provided on an inner surface 52a of the outer steel plates 52 and set to multiple friction coefficients along an axial direction; and a slide part 51B which is provided at the intermediate steel plate 51 and contacts with the friction plates 53 to generate frictional force therebetween by axis displacement of the intermediate steel plate 51. The frictional force generated between the friction plates 53 and the slide part 51B during the axis displacement of the intermediate steel plate 51 is set to obtain a first frictional force that increases generally in proportion to the axis displacement and a second frictional force that becomes constant when the axis displacement exceeds a certain level.SELECTED DRAWING: Figure 3
【課題】高い製造精度が不要で製作や設置施工が容易であり、かつ中小地震から大地震まで変位に追従する摩擦力にて揺れを効果的に低減し、中小地震時には免震建物の加速度増加を抑制しつつ、大地震時には過大変位に対して一定の抵抗力による抑制を図ることができる。【解決手段】建物に取り付けられた中間鋼板５１と、基礎に取り付けられ中間鋼板５１に板厚方向に重なるように配置された一対の外鋼板５２と、外鋼板５２の内面５２ａに設けられ、軸方向に沿って複数の摩擦係数に設定された摩擦板５３と、中間鋼板５１に設けられ、中間鋼板５１の軸変位により摩擦板５３との間で摩擦力を発生させて接触する摺動部５１Ｂと、を備え、中間鋼板５１が軸変位したときの摩擦板５３と摺動部５１Ｂとの間で生じる摩擦力は、軸変位に概ね比例して増大する第１摩擦力と、一定の軸変位を超えると一定となる第２摩擦力と、を得るように設定した摩擦ダンパーを提供する。【選択図】図３
FRICTION DAMPER AND BASE ISOLATION BUILDING
To provide a friction damper which eliminates a need of high manufacturing accuracy to enable easy manufacturing, installation and construction, achieves effective reduction of shaking of small, medium, and large earthquakes with frictional force which follows displacement, and can suppress excessive displacement with a constant resistance force during a large earthquake while inhibiting increase of an acceleration rate of a base isolation building during a small or medium earthquake.SOLUTION: A friction damper includes: an intermediate steel plate 51 attached to a building; a pair of outer steel plates 52 attached to a basement and disposed so as to overlap with the intermediate steel plate 51 in a plate thickness direction; friction plates 53 which are provided on an inner surface 52a of the outer steel plates 52 and set to multiple friction coefficients along an axial direction; and a slide part 51B which is provided at the intermediate steel plate 51 and contacts with the friction plates 53 to generate frictional force therebetween by axis displacement of the intermediate steel plate 51. The frictional force generated between the friction plates 53 and the slide part 51B during the axis displacement of the intermediate steel plate 51 is set to obtain a first frictional force that increases generally in proportion to the axis displacement and a second frictional force that becomes constant when the axis displacement exceeds a certain level.SELECTED DRAWING: Figure 3
【課題】高い製造精度が不要で製作や設置施工が容易であり、かつ中小地震から大地震まで変位に追従する摩擦力にて揺れを効果的に低減し、中小地震時には免震建物の加速度増加を抑制しつつ、大地震時には過大変位に対して一定の抵抗力による抑制を図ることができる。【解決手段】建物に取り付けられた中間鋼板５１と、基礎に取り付けられ中間鋼板５１に板厚方向に重なるように配置された一対の外鋼板５２と、外鋼板５２の内面５２ａに設けられ、軸方向に沿って複数の摩擦係数に設定された摩擦板５３と、中間鋼板５１に設けられ、中間鋼板５１の軸変位により摩擦板５３との間で摩擦力を発生させて接触する摺動部５１Ｂと、を備え、中間鋼板５１が軸変位したときの摩擦板５３と摺動部５１Ｂとの間で生じる摩擦力は、軸変位に概ね比例して増大する第１摩擦力と、一定の軸変位を超えると一定となる第２摩擦力と、を得るように設定した摩擦ダンパーを提供する。【選択図】図３
FRICTION DAMPER AND BASE ISOLATION BUILDING
摩擦ダンパーおよび免震建物
LIU MING CONG (author) / ISODA KAZUHIKO (author)
2022-04-20
Patent
Electronic Resource
Japanese
A Smart Base-Isolation Using Piezoelectric Friction Damper
| British Library Conference Proceedings | 2011