Efficient model updating of a multi-story frame and its foundation stiffness from earthquake records using a timoshenko beam model

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• 作者：E. Taciroglu^a ; ^{etacir@ucla.edu} ; S.F. Ghahari^a ; ¹ ; F. Abazarsa^b
• 关键词：Timoshenko beam model ; Soil-structure interaction ; Blind modal identification ; Modal properties ; Soil-foundation dynamic stiffness ; Millikan Library
• 刊名：Soil Dynamics and Earthquake Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：92
• 期：Complete
• 页码：25-35
• 全文大小：1125 K
• 卷排序：92

文摘

Frequency-dependent soil-foundation stiffness values are identified with a new method. The method requires only a few (spatially sparse) response signals. The unknown input signal is non-stationary (an earthquake). Timoshenko beam represents the superstructure for computational efficiency.