J1010202 Study on Seismic Safety Improvement for Hanging Mechanical Structure in Long Duration Seismic Input

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  • J1010202 長継続時間地震時の天吊り型機械構造物の耐震安全性向上に関する研究([J101-2]耐震・免震・制震 耐震(2))

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In the Great East Japan Earthquake (GEJE), a lot of seismic damage in hanging type mechanical structure in several industrial facilities with low damping occurred by a long duration earthquake, and the industrial function stopped at many facilities. Moreover, the fallen hanging type mechanical structure was associated with the production of the secondary damage such as a cut of an evacuation route. This study has been carried out the seismic safety improvement of hanging type mechanical structure in long duration earthquake from an analytical and experimental approach. In this paper, the fundamental experimental results of falling mechanism of hanging type mechanical structure is shown, and analytical results using nonlinear model with hysteresis damping is described.

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