论文部分内容阅读
海上风电作为一种清洁绿色的能源越来越受到人们的关注,海上风机会承受风、浪、流等水平荷载的作用,因此水平荷载下海上风机单桩基础桩土相互作用一直是人们研究的热点。本文对水平荷载作用下海上风机单桩基土相互作用进行研究,通过ABAQUS有限元数值分析软件建立桩土模型。结果显示:桩顶水平极限位移约为11.25cm,海床面以下1~5m范围为桩身弯矩和桩身mises应力较大的区段;随着桩顶水平位移的逐渐增大,桩身挠曲逐渐向深处发展,桩体位移零点位置逐渐向下;桩体的水平位移会对桩侧土体产生挤压作用,这种挤压作用会使土体塑性屈服区逐渐向下发展,土体水平位移呈半圆形放射状分布,浅层土体mises应力产生非对称分布。
As a kind of clean and green energy, offshore wind power is getting more and more attention. Offshore wind turbine can bear horizontal load such as wind, wave and flow, so the pile-soil interaction of offshore single-pile foundation under horizontal load has been researched Hot spots. In this paper, the interaction of offshore pile-soil pile foundation under horizontal load is studied. The pile-soil model is established by ABAQUS numerical simulation software. The results show that the horizontal displacement of pile top is about 11.25cm, and the range of 1 ~ 5m below the sea floor is the section where the bending moment of pile and mises stress of pile body are larger. With the horizontal displacement of pile top increasing, The deflection gradually develops to the depth and the zero position of pile displacement gradually decreases. The horizontal displacement of the pile body will exert a crushing effect on the pile-side soil mass, which will cause the plastic yielding zone of soil to gradually develop downward, The soil horizontal displacement is semicircular radial distribution, shallow soil mises stress asymmetric distribution.