摩擦による免震装置の研究(機械力学,計測,自動制御)

概要

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When an isolation device is exposed to earthquakes, the relative displacement between the device and the ground increases. The purpose of this research is to decrease the relative displacement by using the friction force. An analytical model in consideration of the friction force is proposed, and simulation analysis under the famous earthquake waves is performed. Consequently, as the friction force increases, the results show that the relative displacement decreases. However, it is found that the response acceleration increases. It is thought that optimal friction force exists, and this force decreases both the response acceleration and the relative displacement. This is considered to change with the properties of earthquake waves. It is shown that the relation between the optimal friction force and the maximum input acceleration is approximately linear from the results of many seismic waves. It is thought that the response acceleration and the relative displacement can be decreased changing the friction force to the most suitable value for each earthquake according to this relation. This isolation device is examined with simulation analysis.
社団法人日本機械学会の論文
2006-02-25