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<p>The inclined anchor short pile foundation can enhance the pull-out resistance of transmission line towers in mountainous areas with complex geological formations characterized by thick overburden and underlying rock layers. Two types of mechanical anchoring forms, i.e., anchoring plate and hooked bar, are designed to investigate the influence of mechanical anchoring forms on the force characteristics and failure mechanism of the inclined anchor short pile foundation joint. Indoor full-scale tests and numerical simulations were conducted on the inclined anchor short pile foundation joint with different anchoring forms under multi-directional tensile conditions. The results show that the short pile works in conjunction with the anchor bar. The final failure mode of the anchor plate specimen is the overall splitting failure of pile concrete, while anchor bar yield is responsible for the hooked bar specimen. Compared to the hooked bar specimen, the anchor plate can strengthen the joint and increase the overall uplift bearing capacity of the foundation structure. The pressure-bearing capacity of the anchor plate ensures its good anchoring performance in the concrete. This research can provide a reference for the design of inclined anchor short pile foundation and provide reference for the study of its deformation characteristics and failure mechanism.</p>

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Effect of Mechanical Anchorage Configuration on the Failure Behavior of Inclined Short Pile Foundation Joints

  • 期刊论文

  • 发表日期：

    2026年3月2日

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  • Jun Duan,
  • Qiang Xie,
  • Yiqing Zhang,
  • Yuxin Ban,
  • Xiang Fu,
  • Ying Zhang,
  • Binqi Yan,
  • Futao Tao,
  • Hao Huang

摘要

The inclined anchor short pile foundation can enhance the pull-out resistance of transmission line towers in mountainous areas with complex geological formations characterized by thick overburden and underlying rock layers. Two types of mechanical anchoring forms, i.e., anchoring plate and hooked bar, are designed to investigate the influence of mechanical anchoring forms on the force characteristics and failure mechanism of the inclined anchor short pile foundation joint. Indoor full-scale tests and numerical simulations were conducted on the inclined anchor short pile foundation joint with different anchoring forms under multi-directional tensile conditions. The results show that the short pile works in conjunction with the anchor bar. The final failure mode of the anchor plate specimen is the overall splitting failure of pile concrete, while anchor bar yield is responsible for the hooked bar specimen. Compared to the hooked bar specimen, the anchor plate can strengthen the joint and increase the overall uplift bearing capacity of the foundation structure. The pressure-bearing capacity of the anchor plate ensures its good anchoring performance in the concrete. This research can provide a reference for the design of inclined anchor short pile foundation and provide reference for the study of its deformation characteristics and failure mechanism.