| dc.description.abstract | This study aims to explore the risk assessment of offshore wind turbines under seismic excitations, providing reference guidelines for relevant entities in the design,construction, and operation of offshore wind turbines. Taiwan is located in the Pacific Ring of Fire, prone to frequent seismic activities, making the study and assessment of earthquake risks in Taiwan highly significant. The article also documents the process of model development, including component selection, material properties, assembly, and discretization of the computational grid.
This paper presents a comprehensive seismic risk study of offshore wind turbine structures, including data collection, structural modal analysis, static pushover analysis, and damage assessment methods. The author gathered seismic data from multiple earthquake events and calculated their acceleration response spectra. Representative seismic events were selected as input forces for the analysis model. Through structural modal analysis, the natural frequencies and mode shapes of the offshore wind turbine structure model were computed to better understand its dynamic characteristics. Subsequently, damage assessment was conducted to obtain displacement, stress, and strain parameters of the offshore wind turbine under seismic loading, evaluating the potential damage levels in seismic scenarios. The research findings demonstrate that by
establishing fragility curves, one can assess the
probability of damage for offshore wind turbines under different seismic intensities.
The research findings will provide valuable insights for the design and construction of offshore wind turbines to ensure their safe operation under seismic conditions.Additionally, this study contributes to better understanding the performance of wind turbines under seismic risk for industry professionals and policymakers, enabling the development of appropriate safety regulations and standards. | en_US |