Field tests on the penetration process of composite bucket foundation for offshore wind turbines[J]. Chinese Journal of Geotechnical Engineering. DOI: 10.11779/CJGE20220157
    Citation: Field tests on the penetration process of composite bucket foundation for offshore wind turbines[J]. Chinese Journal of Geotechnical Engineering. DOI: 10.11779/CJGE20220157

    Field tests on the penetration process of composite bucket foundation for offshore wind turbines

    More Information
    • Received Date: February 13, 2022
    • Available Online: May 09, 2023
    • Composite bucket foundation is a type of foundation structure developed in the field of offshore wind power in recent years. The research on its sinking characteristics is very important for the successful popularization and application of this kind of foundation. The field test of the sinking process of offshore wind power composite cylindrical foundation is carried out in the eastern sea area of Ru dong, Jiangsu Province. The variation laws of the overall inclination of the foundation, the pressure in the silo, the pore water pressure and earth pressure at the cylinder wall soil interface during the sinking process are analyzed, and the influence of the cylinder wall soil interface contact on the earth pressure response law of the effective interface inside and outside the cylinder wall is discussed. The test results show that the composite cylindrical foundation sinks smoothly to the predetermined elevation of seabed foundation soil under the complex environmental load of real wind, wave and current, and the foundation inclination is 0.018? after sinking; During the sinking process, the pore water pressure of the outer wall of the foundation is affected by the tide level and the drainage conditions of the contact soil layer, and the negative pressure in the cylinder leads to the peak value of the interface earth pressure of the inner wall of the foundation decreasing by about 46.7% compared with the outer wall. In addition, the study also puts forward that the seepage drag reduction effect and soil squeezing drag increase effect of the cylinder wall soil interface are the main reasons for the differential distribution of the effective interface earth pressure inside and outside the cylinder wall. At the same time, the existence of the mud skin at the cylinder wall soil interface can better explain the lag of the effective interface earth pressure response of the cylinder wall when the foundation passes through the silty sand mixed with silty soil. The research results can provide reference for the accurate sinking of composite tubular foundation under complex geological conditions.
    • Cited by

      Periodical cited type(8)

      1. 王泽志,王杰,马小刚,李帆,范新亚,陈燕. 用磁性微磨料射流技术光整加工交叉深孔内壁. 金刚石与磨料磨具工程. 2025(02): 245-255 .
      2. 王高辉,孔维伟,卢文波,潘鑫豪,舒奕展. 高拱坝坝后侵彻爆炸毁伤效应分析. 武汉大学学报(工学版). 2024(07): 853-862 .
      3. 王义江,郁东旭,孙立鹏,朱启银,王建州. 激光照射岩石热裂特性与裂隙分布研究. 岩土工程学报. 2024(09): 1809-1819 . 本站查看
      4. 韩明兴,余锴,段宏兵,熊利荣,徐琨,李淼,刘琦. 基于SPH-FEM的油菜茎秆磨粒气体射流切割仿真与试验. 农业工程学报. 2024(17): 82-92 .
      5. 李新旺,王汉青,程立朝,张学栋,温学君,申鹏飞. 高压水射流冲击下煤体初始失效形式分析. 中国科技论文. 2023(01): 64-70+90 .
      6. 胡阳,曹安业,秦续峰,薛成春,郭文豪,刘耀琪,彭雨杰. 深部冲击地压煤层水射流割缝卸压参数优化研究. 岩土工程学报. 2023(07): 1509-1516 . 本站查看
      7. 林琳,赵志磊,蒋东岑,张云朋,尤晖. 尖边喷嘴磨料水射流特性分析及对去除函数轮廓的影响. 液压与气动. 2023(09): 116-129 .
      8. 王璐,徐绯,杨扬. 完全拉格朗日SPH在冲击问题中的改进和应用. 力学学报. 2022(12): 3297-3309 .

      Other cited types(9)

    Catalog

      Article views (269) PDF downloads (57) Cited by(17)
      Related

      /

      DownLoad:  Full-Size Img  PowerPoint
      Return
      Return