The shaking table test is carried out for three bucket jacket foundation for offshore wind turbine, the excess pore water pressure and acceleration of the foundation soil are studied. The dynamic response of the soil under earthquake is obtained by using the finite element software ADINA. The test results are compared with the numerical simulation results, and it is found that they are in good agreement. Three test conditions with different seismic intensity are selected for simulation, and the distribution laws of excess pore water pressure and acceleration are analyzed. The results show that the anti-liquefaction performance of the soil inside the bucket is higher than that outside the bucket, and there is a high risk of liquefaction near the bottom of the bucket wall. The upper load and hoop effect of three bucket jacket foundation can improve the liquefaction resistance of foundation soil.
Key words
offshore wind power /
soil liquefaction /
pore pressure /
acceleration /
numerical simulation /
three bucket jacket foundation
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