中国海洋大学学报（自然科学版）2025，Vol.55Issue(5)：149-156,8.DOI:10.16441/j.cnki.hdxb.20240135
砂土中大直径单桩极限水平抗力的数值模拟
Numerical Simulation of Ultimate Horizontal Resistance for Large Diameter Monopiles in Sand
摘要
Abstract
Most offshore wind turbines at home and abroad use large diameter monopile foundation,and the control condition of large diameter monopile design is usually the response under horizontal load.The traditional API method is mainly used for slender piles,and the PISA method developed in re-cent years uses four kinds of springs to represent the reaction force of soil to piles,which is more suit-able for monopiles with low aspect ratio in principle,but there is great controversy about the calculation of ultimate horizontal resistance in PISA method.The typical sand parameters in the South China Sea are selected for finite element analysis,and the key parameters such as soil relative density,pile diame-ter and aspect ratio are changed,and the response curves of pile foundation are compared.It is found that the three widely used expressions of ultimate horizontal resistance have obvious limitations.Based on the finite element analysis of a large number of variable parameters,it is suggested to express the change of ultimate horizontal resistance with depth in two stages.关键词
大直径单桩/砂土/水平荷载/有限元法/长径比Key words
large diameter monopile/sand/horizontal load/finite element method/aspect ratio分类
建筑与水利引用本文复制引用
刘德广,罗成喜,王栋..砂土中大直径单桩极限水平抗力的数值模拟[J].中国海洋大学学报（自然科学版）,2025,55(5):149-156,8.基金项目
国家自然科学基金项目(42025702)资助Supported by the National Natural Science Foundation of China(42025702) （42025702）
