STIFFNESS-DAMPING SIMULTANEOUS IDENTIFICATION OF BUILDINGS INCLUDING UNKNOWN INNER VIBRATION SOURCE

概要

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In this paper, a new stiffness-damping simultaneous identification method for a building structure is proposed when the building includes an unknown inner vibration source. The feature of this method is that the present identification can be performed even though the location and time-history of the vibration source in addition to all stiffness and damping coefficients are unknown. By performing limit manipulation, the relations between stiffnesses of consecutive stories and those between damping coefficients of consecutive stories can be obtained from the acceleration data at the floors just above and below the object story which can be recorded by using at least two sensors. The level of stiffness and damping coefficients can be determined to satisfy the recorded lowest natural frequency and the lowest damping ratio. The validity of the proposed method is examined through numerical examples using theoretical data and actually recorded data.
日本建築学会の論文