Examining the behavior of laterally loaded large-diameter monopiles using coupled FDM-DEM simulations
Examining the behavior of laterally loaded large-diameter monopiles using coupled FDM-DEM simulations
In order to examine the load-transfer mechanisms of large-diameter monopiles from a microscopic perspective, three-dimensional FDM-DEM simulations on a centrifuge model pile test were carried out. The simulation results show great resemblance to the measurements from the centrifuge test, suggesting capability of the proposed FDM- DEM simulation framework, which considers rolling-resistance in the contact model and involves a careful calibration based on triaxial tests. The simulation results shed light on the complex interactions between monopile and the surrounding soils in terms of deformation patterns of the monopile, the displacement field and the force chain evolution of surrounding soils. This do not support the basic assumption of p-y curve method that the soil-pile interaction at a particular depth is independent of the soil behavior at all other depths. The research findings help to deepen our understanding on the behavior of monopiles from a microscopic perspective, and to provide a theoretical basis for the optimization of associated design approaches.
Z. Zhang; Z. T. Zhang; Xue Dong Zhang; W. Wang; G. M. Yu; Z. Q. Zhang
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
A - New developments on structural design
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