制振構造に用いる鉛ダンパーの研究

概要

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The authors purposed to control the vibrations in buildings with lead dampers. This would reduce the sense of unease to occupants during mid-sized earthquakes (Japan Seismic Intensity Scale IV〜V). The simple lead damper would have a large shear deformation and a small bending deformation. We experimented with this damper to simulate its practical effect in a dynamic cyclic loading test. We examined the effects of amplitude, frequency, temperature, and number of repititions to the hysteretic loop. These experiments showed that the lead damper has excellent hysteretic loop characteristics, the effect of frequency is small, and the stress deteriorates in repeat loading but recovers after a short pause. Finally, we analyzed the dynamic response of a 19-story steel-frame building with these lead dampers installed. This certified that the damper lowers the building's response to vibration.
一般社団法人日本建築学会の論文
1989-03-10