Shake Table Tests on the Bending Moment Distribution of Monopile-Supported Offshore Wind Turbines Subjected to Seismic Motion

抄録

Shake table tests were performed on a 5 MW offshore wind turbine supported by a monopile to assess its response during significant seismic events. The study aimed to analyze the vibration characteristics of the pile, a critical consideration in practical design assessment. To accomplish this, we investigated the correlation between the bending moment distribution of the pile and the waveform attributes of the input seismic motion. Our analysis, with a specific emphasis on eigenmodes, revealed variations in the wind turbine's vibration mode and timing concerning the peak bending moment of the pile. These variations were found to be influenced by the specific vibration attributes of the input seismic motion.