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<p>Prestressed pipe piles are increasingly utilized in the foundation construction of marine structures such as ports and docks. However, during the pile installation process in marine clay, both the stress state of the pile body and the surrounding soil undergo continuous dynamic changes. This study investigates the stress states of the pile and the surrounding soil during the cavity expansion into marine clay and presents the following innovative contributions: (1) By employing the Love displacement function method, an elastic analytical solution for the stress field distribution along the pile shaft is derived. (2) Considering the shear contraction and shear dilation characteristics of marine clay, a constitutive model incorporating both deformation behaviors is proposed. (3) Using the aforementioned model as the constitutive relation and combining it with a self-similar displacement distribution model, the corresponding stress field of the surrounding soil is theoretically derived. The comparison between experimental results and model predictions demonstrates that the proposed model exhibits a high degree of rationality and practical applicability.</p>

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Analysis of marine clay driving piles and marine soil cavity expansion

  • 期刊论文

  • 发表日期：

    2026年7月25日

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  • Zheng Wan,
  • Yuanyuan Liu

摘要

Prestressed pipe piles are increasingly utilized in the foundation construction of marine structures such as ports and docks. However, during the pile installation process in marine clay, both the stress state of the pile body and the surrounding soil undergo continuous dynamic changes. This study investigates the stress states of the pile and the surrounding soil during the cavity expansion into marine clay and presents the following innovative contributions: (1) By employing the Love displacement function method, an elastic analytical solution for the stress field distribution along the pile shaft is derived. (2) Considering the shear contraction and shear dilation characteristics of marine clay, a constitutive model incorporating both deformation behaviors is proposed. (3) Using the aforementioned model as the constitutive relation and combining it with a self-similar displacement distribution model, the corresponding stress field of the surrounding soil is theoretically derived. The comparison between experimental results and model predictions demonstrates that the proposed model exhibits a high degree of rationality and practical applicability.