The Static And Dynamic Analyse Of Offshore Wind Turbine Single Pile Foundation

Wind energy is a renewable resource of clean and sustainable, it has become one of theimportant energy resource for human. The offshore wind energy in China is rich, and thedevelopment of wind power is one of the sustainable development strategy in China. So, thereis great significance in the study of offshore wind power. In this paper，the institution of thefinite element model of offshore wind turbine single-pile foundation, and the analysis ofmechanical properties and structural response in the static load and dynamic load, both ofthem use the ABAQUS finite element analysis software. The research contents and results ofthis paper roughly as follows:First of all, the theoretical solution and the numerical solution of the offshore windturbine single-pile foundation is calculated，there is a small difference between them bycomparing. The analyst shows that, in the equivalent static load, the largest stress of theoffshore wind turbine single-pile foundation is less than the material yield stress. In this case,the structure is in the elastic state, and it is full of the safe reserve.Secondly, to satisfy the safe performance of the structure, we adopted two differentimproved methods to choose the more reasonable foundation structure form, and optimizetheir design parameters. Finally, the casing concrete pile was used, because it can reduce theanalysis errors which come from the theory method, and it can try to meet the requirements ofthe existing piling technology.And then, the dynamic respond of offshore wind turbine single-pile foundation under thecoupled dynamic load was studied by the time-history analysis method, so we can reach thecorresponding displacement schedule and stress schedule. The results show that, in thedynamic load, the largest stress of the structure is less than the material yield stress. In thiscase, the structure is in the elastic state, and it is full of the safe reserve.Finally, the results of the dynamic load of the structure were compared with the results ofstatic load. The analysis results show that, the results of the dynamic response and the resultsof static action are more or less the same. Both of them can be use as reference for the designof offshore wind turbine single-pile foundation.