免震・除振床用多段積層ゴムの実験的研究

概要

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The rubber bearings to be used for an isolation floor which is effective not only for strong earthquakes but also for weak earthquakes and even ambient micro-vibration, must be able to provide the rated masses of 1 500~3 000 kg per bearing with horizontal stiffnesses corresponding to natural frequencies of 0.4~0.5 Hz and to undergo a horizontal displacement of 20 cm or so. Such performance cannot be achieved by rubber bearings of normal structure because the rated masses are too small. As a solution to this problem, multi-stage rubber bearings were developed, which consisted of 8 stages (each stage comprising 4 rubber bearing elements) piled up with 7 stabilizing plates between the stages. Through static and dynamic tests, it was confirmed that the multi-stage rubber bearings satisfied the requirements and were effective even for micro-vibration.
一般社団法人日本機械学会の論文
1987-06-25