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- W4312221655 endingPage "105210" @default.
- W4312221655 startingPage "105210" @default.
- W4312221655 abstract "The safe and stable operation of monopile offshore wind turbines (MOWTs) under seismic and environmental loading is a major challenge facing designers. A numerical method was developed for simulating the dynamic interaction of the soil-pile-structure system by employing an elastoplastic bounding surface constitutive model that can capture the cyclic degradation of clay stiffness well. Then, the suitability of the method was validated by comparison with the existing simulation results in the literature. The dynamic responses of MOWTs to seismic and environmental loading were simulated by employing the above numerical method. The effects of soil plasticity and stiffness degradation on the dynamic responses of MOWTs were investigated. The influence of environmental loads on the seismic responses of MOWTs was also analysed. It was found that the monopile experienced significant rotation and settlement, and the soil plasticity and stiffness degradation significantly increased the peak response of the lateral deflection, rotation angle and bending moment of the MOWT under combined seismic and environmental loads. The input bedrock peak acceleration was amplified to varying degrees from the monopile bottom to the tower top, and the acceleration amplification along the height was the most significant overall when considering the soil stiffness degradation. Environmental loads such as winds and waves significantly increased the absolute values of the seismic response profile, including the deflection, rotation angle and bending moment, as well as the acceleration amplification factor. The research results can support the seismic design of MOWTs." @default.
- W4312221655 created "2023-01-04" @default.
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- W4312221655 date "2023-03-01" @default.
- W4312221655 modified "2023-10-16" @default.
- W4312221655 title "Dynamic response analysis of monopile offshore wind turbines to seismic and environmental loading considering the stiffness degradation of clay" @default.
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- W4312221655 doi "https://doi.org/10.1016/j.compgeo.2022.105210" @default.
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