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Research on Bearing Capacity of Secant Piled-Bucket Foundation in Saturated Clay

Author

Listed:
  • Ying Xu

    (State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China
    School of Civil Engineering, Tianjin University, Tianjin 300350, China)

  • Haijun Wang

    (State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China
    School of Civil Engineering, Tianjin University, Tianjin 300350, China)

  • Liying Zhang

    (China Huaneng Group, Clean Energy Research Institute, Beijing 102209, China)

  • Mingji Deng

    (China Huaneng Group, Clean Energy Research Institute, Beijing 102209, China)

  • Hechuan Jiang

    (China Huaneng Group, Clean Energy Research Institute, Beijing 102209, China)

  • Yaohua Guo

    (State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China
    School of Civil Engineering, Tianjin University, Tianjin 300350, China)

  • Xu Yang

    (State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China
    School of Civil Engineering, Tianjin University, Tianjin 300350, China)

Abstract

The secant piled-bucket foundation (SPBF) is innovatively proposed to suit the large-capacity mainstream, which is optimized from a traditional foundation and consists of an upper pile cap and a lower bucket skirt. Compared with the pile foundation, the SPBF has great advantages and deserves further study. In this research, the bearing mode, bearing capacity and failure mode under various loads of SPBF in saturated clay have been fully studied. First, the small-scale model test in saturated clay is carried out to verify the finite element (FE) method; the deviation between the FE results and the test results under vertical load and horizontal–moment load is 10.65% and 10.25%, respectively. Next, the bearing mode of SPBF in engineering scales is investigated via FE method, the results indicating that the bearing mode of SPBF is similar to that of a prestressed tubular foundation. Finally, the bearing capacity and failure mode of SPBF are studied and the findings show that the vertical bearing capacity and horizontal–moment bearing capacity of SPBF is 96.53 MN and 1.62 MN, and the weak parts of SPBF are concrete of the pile cap and the anchor bolts, respectively. This paper provides support for design and further optimization in the future.

Suggested Citation

  • Ying Xu & Haijun Wang & Liying Zhang & Mingji Deng & Hechuan Jiang & Yaohua Guo & Xu Yang, 2022. "Research on Bearing Capacity of Secant Piled-Bucket Foundation in Saturated Clay," Sustainability, MDPI, vol. 14(18), pages 1-17, September.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:18:p:11511-:d:914445
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    References listed on IDEAS

    as
    1. Bin Wang & Ming-Hui Yuan & Liang Li & Chang-Feng Yuan & Ying Li & Kan-Min Shen, 2022. "Sensitivity Analysis of Factors Affecting the Bearing Capacity of Suction Bucket Foundation in Soft Clay," Sustainability, MDPI, vol. 14(15), pages 1-14, August.
    2. Jianbo Yang & Qunyi Liu & Xin Li & Xiandan Cui, 2017. "Overview of Wind Power in China: Status and Future," Sustainability, MDPI, vol. 9(8), pages 1-12, August.
    3. Guo, Yaohua & Zhang, Puyang & Ding, Hongyan & Le, Conghuan, 2021. "Design and verification of the loading system and boundary conditions for wind turbine foundation model experiment," Renewable Energy, Elsevier, vol. 172(C), pages 16-33.
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