Numerical Simulation of Influence of Split Hoisting on Vertical Bearing Characteristics of Jacket Foundation
Taken a 3 000 t offshore booster station in Zhuanghe sea area as the research object,the Abaqus numerical simulation method is used to establish the jacket foundation model of the offshore booster station,and the effect of the upper block split lifting on the vertical bearing characteristics of the jacket foundation is simulated.The results show that:when the split hoisting scheme is adopted,the total settlement of the booster station foundation is smaller than that of the overall loading scheme,but the foundation settlement is not uniform;the vertical load born by the foundation of the booster station is not significantly different from that of the overall loading scheme;the deflection of the foundation pile body of the booster station is larger than that of the overall loading scheme,which is likely to cause damage to the soil around the pile foundation.Although the split hoisting is of certain adverse effects on the bearing characteristics of the jacket foundation compared to the overall loading scheme,considering the construction cost,the split hoisting method can be used for construction.The research results can provide reference for similar offshore wind power projects.
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