Huang, Yu TzuYu TzuHuangLoh, Chin-HsiungChin-HsiungLohCHUNG-CHE CHOUChen, Wen HuiWen HuiChen2024-03-012024-03-012024-01-0100988847https://scholars.lib.ntu.edu.tw/handle/123456789/640051Structural 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.building seismic response | principal component analysis | recursive subspace identification | stochastic subspace identification | time-frequency analysis of signal[SDGs]SDG11[SDGs]SDG16journal article10.1002/eqe.40842-s2.0-85182479396https://api.elsevier.com/content/abstract/scopus_id/85182479396