水利水电技术（中英文）2024，Vol.55Issue(12)：193-202,10.DOI:10.13928/j.cnki.wrahe.2024.12.016
基于p-y曲线和实体有限元法的大直径单桩水平受荷性状研究
Lateral behaviour of large-diameter pile based on p-y curve and solid FEM method
摘要
Abstract
[Objective]With the rapid increasing of offshore wind power in China,monopiles with diameters exceeding 2 m are widely used.As these piles are subjected to lateral loads caused by wind,wave,and current,the designs of the pile foundations supporting offshore wind turbines are significantly influenced by their lateral behaviors.In order to research the current problems in the design of large-diameter monopiles and provide the reference for the design of offshore wind turbine foundations,[Meth-ods]field tests of largest-diameter monopiles on the sea and additional analysis based on FEM and p-y curves are carried out,to reveal the response of monopiles subjected to lateral loads.[Results]The results revealed that the p-y curves proposed by API code for clay showed much"softer"response,which resulted in the conservative design of the piles;Solid FEM relied heavily on the choosing of used parameters.At relatively small deflections,the solid FEM presented reasonable result as compared with the tests,which however was supposed to over-estimate the ultimate capacity of the piles.[Conclusion]The results also indicated the importance of the influence of pile-soil gap and the application of parameter analysis to achieve the relatively conservative result,if the solid FEM is adopted in the design.关键词
海上风电/原位试验/大直径单桩/水平受荷/p-y曲线/实体有限元Key words
offshore wind power/field test/monopile/lateral load/p-y curve/solid finite element method分类
建筑与水利引用本文复制引用
章巍,储著宇,陈学奇,俞刚,张志帅,韩勃..基于p-y曲线和实体有限元法的大直径单桩水平受荷性状研究[J].水利水电技术（中英文）,2024,55(12):193-202,10.基金项目
国家重点研发计划政府间国际科技创新合作专项(2021YFE0113400) （2021YFE0113400）
国家自然科学基金项目(52171266,51979155,52271294) （52171266,51979155,52271294）
