457 高架橋道路カーブ部のクラスター制御(実験的検証)

概要

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Recently, highway roads have been constructed as steel structures instead of concrete because of their lightweight after Hanshin great Earthquake caused big damages on concrete highway roads. While earthquake-resistance of a steel road structure increases, vibration and low frequency noise on such structures becomes a major problem due to flexibility. There is an increasing demand especially in populated areas to suppress vibration and noise in highway roads for reducing noise related environmental pollution. This study proposes cluster filtering which classifies vibration modes into the certain mode groups and cluster actuation, which excites only certain modes as a reliable and effective approach to suppress vibration on viaduct roads. In the previous reports, the cluster control is studied for a flat road part.. In this study, the curve viaduct part modes are experimentally verified and the cluster control is applied to a curve viaduct road using moment actuators, which generate absolute forces inside the structure. Experimental results show that cluster control is effective to suppress only odd/(odd-even) and even/(even-odd) modes.
一般社団法人日本機械学会の論文
2000-09-01