VIBRATION SENSING OF BUILDING 30 SEVERELY DETERIORATED AND DAMAGED IN GUNKANJIMA

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  • 激しく劣化・損傷した軍艦島30号棟の振動センシング
  • ハゲシク レッカ ・ ソンショウ シタ グンカントウ 30ゴウトウ ノ シンドウ センシング

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Abstract

<p>Dynamic behaviors of building 30 severely deteriorated and damaged are investigated by processing acceleration data acquired by the vibration sensor network in Gunkanjima. Long-term and short-term variations of the vibrational characteristics of building 30 have been evaluated by singular value decomposition and spectrogram, respectively. It is observed that predominant frequencies change unsteadily as a time-variant system depending on damage evolution and external environment during long-term and short-term monitoring even in normal time. </p>

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