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Failure Envelopes of Tripod Pile Foundation Under Combined Load in Non-homogeneous Clay

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Proceedings of CIBv 2023 (CIBv 2023)

Part of the book series: Lecture Notes in Civil Engineering ((LNCE,volume 510))

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Abstract

Tripod pile foundations are an alternative foundation for offshore wind turbines. Three-dimensional finite element limit analyses are carried out to determine the bearing capacities of tripod pile foundations in non-homogeneous clay under combined vertical (V), horizontal (H) and bending moment (M) load. The undrained shear strength of the clay is considered to increase linearly with depth. Three-dimensional failure envelopes in V-H-M loading space are established through a simplified loading strategy considering the reality of the loading condition. The obtained results are finally presented in terms of normalized and dimensionless capacity factors. Moreover, the effects of length-to-diameter ratios (L/D), spacing-to-diameter ratios (s/D) for the tripod piles, and the gradient of undrained strength in terms of soil depth (k) on failure envelopes are further discussed. Several failure mechanisms are identified to be associated with different load combinations.

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Acknowledgement

This study is sponsored by National Natural Science Foundation of China (Grant No. 52378357 and 52008268), Doctoral Start-up Foundation of Liaoning Province (Grant No. 2022-BS-195), Chunhui Project Foundation of the Education Department of China (Grant No. HZKY20220416), Foundation of Liaoning Province Education Administration (Grant No. JYTMS20231608) and Shenyang Excellent Young and Middle-aged Science and Technology Innovation Talent Support Program (Grant No. RC230805). The authors would like to thank OptumCE for providing academic access to OptumG3.

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Authors and Affiliations

  1. School of Civil Engineering, Shenyang Jianzhu University, Shenyang, 110819, China

    Zihao Zhao, Jingchun Han & Hao Zhang

  2. Shen Kan Engineering and Technology Corporation MCC, Shenyang, 110169, China

    Hao Zhang

Authors
  1. Zihao Zhao
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  2. Jingchun Han
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  3. Hao Zhang
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Correspondence to Hao Zhang .

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Editors and Affiliations

  1. Faculty of Civil Engineering, Transylvania University of Brașov, Brașov, Romania

    Ioan Tuns

  2. Faculty of Civil Engineering, Transylvania University of Brașov, Brașov, Romania

    Radu Muntean

  3. Faculty of Civil Engineering, Transylvania University of Brașov, Brașov, Romania

    Dorin Radu

  4. Faculty of Civil Engineering, Transylvania University of Brașov, Brașov, Romania

    Christiana Cazacu

  5. Faculty of Civil Engineering, Transylvania University of Brașov, Brașov, Romania

    Teofil Gălățanu

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Zhao, Z., Han, J., Zhang, H. (2024). Failure Envelopes of Tripod Pile Foundation Under Combined Load in Non-homogeneous Clay. In: Tuns, I., Muntean, R., Radu, D., Cazacu, C., Gălățanu, T. (eds) Proceedings of CIBv 2023. CIBv 2023. Lecture Notes in Civil Engineering, vol 510. Springer, Cham. https://doi.org/10.1007/978-3-031-60765-3_34

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  • DOI: https://doi.org/10.1007/978-3-031-60765-3_34

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-60764-6

  • Online ISBN: 978-3-031-60765-3

  • eBook Packages: EngineeringEngineering (R0)

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