https://scholars.lib.ntu.edu.tw/handle/123456789/640051
標題: | Long-term building safety assessment from a series of earthquake excitations | 作者: | Huang, Yu Tzu Loh, Chin-Hsiung CHUNG-CHE CHOU Chen, Wen Hui |
關鍵字: | building seismic response | principal component analysis | recursive subspace identification | stochastic subspace identification | time-frequency analysis of signal | 公開日期: | 1-一月-2024 | 來源出版物: | Earthquake Engineering and Structural Dynamics | 摘要: | Structural health monitoring is conducted to ensure the structural integrity of a building during earthquakes. This study aimed to improve our understanding of the dynamic response of buildings subjected to a series of earthquake excitations, focusing on interpreting structural dynamic characteristics and identifying potential seismic damage subjected to a series of earthquake excitations. To this end, a series of seismic response data of a 13-story reinforced-concrete/steel building were collected through long-term monitoring over 2 years. A systematic approach for monitoring the health of the building was established by integrating several algorithms for vibration-based (both output-only and input–output parametric nonparametric feature-discrimination algorithms) and model-based feature extraction techniques. Furthermore, the time-varying dynamic characteristics of the building were determined, including its modal frequency, mode shape, and stiffness, as extracted from features obtained over the monitoring period of 2 years. Safety assessment of this newly compound high-rise building is investigated to explore the system dynamic characteristics through long-term seismic monitoring. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/640051 | ISSN: | 00988847 | DOI: | 10.1002/eqe.4084 |
顯示於: | 土木工程學系 |
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