Dynamic and Residual Pore Water Pressure Response of Hybrid Foundation System Under Combined Action of Wind, Wave and Seismic Loading

The dynamic response characteristics of the innovative marine wind power hybrid foundation under combined action wind, wave and seismic loading are studied in this article. Taking monopile as reference group, shearing strain-volumetric strain coupled pore pressure incremental constitutive model was utilized to simulate kinetic behavior seabed’s saturated soil. distribution variation residual water around pile due interactions upper structure, soil illustrated. results indicate that: (a) cylindrical platform changes accelerates accumulation area, which converts from surrounding nearby platform; (b) compared foundation, peak value is smaller only loading, that monopole with stiffness more vulnerable deform synergistically; (c) structure can significantly reduce horizontal placement extreme load, also change bending moment middle foundation. It manifested by a lower near mudline while could increase mudline.