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SEISMIC ISOLATION DAMPER AND SEISMIC ISOLATION STRUCTURE WITH THE SEISMIC ISOLATION DAMPER
To provide a seismic isolation damper which has all of following characteristics: a deformation property to cope with the relative story displacement, non directional property in damping performance, a mechanism to relieve the axial tension and a space-saving mechanism to be installed in a small space.SOLUTION: A seismic isolation damper 1 has a lower steel bar 9 with its lower end fixed to a lower structure 3 and its upper end extending toward an upper structure 5, an upper steel bar 11 with its upper end fixed to the upper structure 5 and its lower end extending toward the lower structure 3 and located below the upper end of the lower steel bar 9, and a perforated plate 15 with an insertion hole 13 in which the lower steel bar 9 is insertable. In a state that the fore end of the lower steel bar 11 is inserted in the insertion hole 13, the perforated plate 15 is arranged to connect to both lower steel bar 9 and upper steel bar 11. When a relative story displacement takes place between the lower structure 3 and the upper structure 5 at earthquake time, a pressure is applied to the lower steel bar 9 and the upper steel bar 11 in a direction perpendicularly crossing the shaft line so that the lower steel bar 9 and the upper steel bar 11 are bent and deformed to absorb the seismic energy.SELECTED DRAWING: Figure 1
【課題】層間変位に追従できる変形性能、減衰性能に方向性を持たない無方向性、軸力の影響を解消できる機構、狭い空間に設置できる省スペースな機構という全ての性能を有する免震ダンパーを提供する。【解決手段】本発明に係る免震ダンパー１は、下端が下部構造体３に固定され、上部構造体５に向けて延在する下部側棒鋼９と、上端が上部構造体５に固定され、下部構造体３に向けて、かつ下部側棒鋼９の先端よりも下方に延在する上部側棒鋼１１と、下部側棒鋼９が挿通可能な挿通孔１３を有する孔開き板１５を有し、挿通孔１３に下部側棒鋼９の先端部を挿入した状態で、孔開き板１５を下部側棒鋼９と上部側棒鋼１１に亘るように配置し、地震時において下部構造体３と上部構造体５とが層間変位をした際に、下部側棒鋼９と上部側棒鋼１１に対して軸線直交方向の力を与えることで下部側棒鋼９及び上部側棒鋼１１に曲げ変形を与えてエネルギー吸収するようにしたものである。【選択図】 図１
SEISMIC ISOLATION DAMPER AND SEISMIC ISOLATION STRUCTURE WITH THE SEISMIC ISOLATION DAMPER
To provide a seismic isolation damper which has all of following characteristics: a deformation property to cope with the relative story displacement, non directional property in damping performance, a mechanism to relieve the axial tension and a space-saving mechanism to be installed in a small space.SOLUTION: A seismic isolation damper 1 has a lower steel bar 9 with its lower end fixed to a lower structure 3 and its upper end extending toward an upper structure 5, an upper steel bar 11 with its upper end fixed to the upper structure 5 and its lower end extending toward the lower structure 3 and located below the upper end of the lower steel bar 9, and a perforated plate 15 with an insertion hole 13 in which the lower steel bar 9 is insertable. In a state that the fore end of the lower steel bar 11 is inserted in the insertion hole 13, the perforated plate 15 is arranged to connect to both lower steel bar 9 and upper steel bar 11. When a relative story displacement takes place between the lower structure 3 and the upper structure 5 at earthquake time, a pressure is applied to the lower steel bar 9 and the upper steel bar 11 in a direction perpendicularly crossing the shaft line so that the lower steel bar 9 and the upper steel bar 11 are bent and deformed to absorb the seismic energy.SELECTED DRAWING: Figure 1
【課題】層間変位に追従できる変形性能、減衰性能に方向性を持たない無方向性、軸力の影響を解消できる機構、狭い空間に設置できる省スペースな機構という全ての性能を有する免震ダンパーを提供する。【解決手段】本発明に係る免震ダンパー１は、下端が下部構造体３に固定され、上部構造体５に向けて延在する下部側棒鋼９と、上端が上部構造体５に固定され、下部構造体３に向けて、かつ下部側棒鋼９の先端よりも下方に延在する上部側棒鋼１１と、下部側棒鋼９が挿通可能な挿通孔１３を有する孔開き板１５を有し、挿通孔１３に下部側棒鋼９の先端部を挿入した状態で、孔開き板１５を下部側棒鋼９と上部側棒鋼１１に亘るように配置し、地震時において下部構造体３と上部構造体５とが層間変位をした際に、下部側棒鋼９と上部側棒鋼１１に対して軸線直交方向の力を与えることで下部側棒鋼９及び上部側棒鋼１１に曲げ変形を与えてエネルギー吸収するようにしたものである。【選択図】 図１
SEISMIC ISOLATION DAMPER AND SEISMIC ISOLATION STRUCTURE WITH THE SEISMIC ISOLATION DAMPER
免震ダンパー及び該免震ダンパーを用いた免震構造
MORIOKA HIROMITSU (author) / KINOSHITA TOMOHIRO (author)
2019-12-12
Patent
Electronic Resource
Japanese
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