C14 ウレタンゴム材料を用いた減振装置の基礎的研究(OS8 機械・機械構造物の耐震・免震・振動制御(2)1)

概要

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The detached house designed by old design index that was damaged at Hyogo-ken Nanbu earthquake is over 47% in total detached houses in Japan. The upgrading for seismic safety such detached houses is urgent duties because a possibility of occurrence of huge earthquake is expected in a high probability. This study tries to apply urethane material not only to seismic safety element but also to energy absorbing element for detached house as a vibration reduction material at the same time. A linearity of basic mechanical characteristics of urethane rubber is generally much stronger than viscoelastic material such as a natural rubber. Moreover, it is possible to arrange a proper mechanical characteristics that is satisfied the design demand to fit each application cases. The application of urethane material to a detached house contributes to expand the techniques for seismic safety of structures that is a social imperative duties, and also to realize ultra long life of detached house in Japan. As the result, it is confirmed that the test specimen using urethane rubber indicates high linearity in mechanical characteristics and deformation performance by loading tests in condition with the test parameters of shaking frequency and amplitude
2009-09-01