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- Title
海上风电单桩基础轴向承载特性及软弱土层影响分析.
- Authors
李超杰; 朱洪泽; 苏浩然; 苏凯
- Abstract
With the wide application of offshore wind turbines with large diameter monopile foundation, the axial bearing characteristics of pile foundation and the influence of soft soil in complex geological conditions need to be further studied. The finite element software ABAQUS was used to carry out a series of numerical calculations in this study. Firstly, the different evaluation criteria of ultimate bearing capacity are compared, and the sensitivity analysis of the influence of soil parameters was carried out. Finally, the influence of location and thickness of soft soil layer on bearing characteristics was discussed. The calculation results show that the vertical bearing capacity determined by the loaddisplacement curve of the pile top is significantly smaller than that obtained by the settlement control standard. The friction angle of soil has an important influence on the vertical bearing capacity, and the increase of elastic modulus can effectively reduce the axial settlement of monopile. The closer the soft soil is to the pile end, the greater the decline of the axial bearing capacity of monopile. At the same time, as the thickness of the soft soil layer increases, the axial bearing capacity will further decrease and show a three-stage attenuation law of" acceleration-uniform speed-uniform speed".
- Subjects
SOIL depth; BEARING capacity of soils; WIND turbines; SOIL testing; NUMERICAL calculations; ELASTIC modulus
- Publication
China Rural Water & Hydropower, 2023, Issue 2, p185
- ISSN
1007-2284
- Publication type
Article
- DOI
10.12396/znsd.222234