Development of a transient damping feature extracting method based on monitoring data and application

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  • Yabe Akito
    (株)構造計画研究所 耐震技術部 技術担当
  • Miyamoto Ayaho
    山口大学 スイス連邦工科大学ローザンヌ校(EPFL)

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  • モニタリングデータを利用した橋梁損傷検知手法の提案と適用
  • モニタリングデータ オ リヨウ シタ キョウリョウ ソンショウ ケンチ シュホウ ノ テイアン ト テキヨウ

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Abstract

<p>This paper introduces the details of a transient damping feature extracting method based on the bridge monitoring data with the aid of the frequency slice wavelet transform (FSWT) which is a time-frequency space analysis tool and its application to damage detection of the bridges. The proposed method via the state representation methodology (SRM) algorithm has been verified by the state probably distribution using the vibration signal from a laboratory bridge monitoring system. As a result, the system state vector as a non-parametric state variable will be able to apply to assess the state change (damage) of the bridge structures by expression of the state probably distribution.</p>

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