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DOI: https://doi.org/10.11988/ckyyb.20250802

Quasi-static Analysis of Anchoring Mechanism of Pressure-dispersed Anchor Cables under Seismic Action

  • YE Hong , 1, 2 ,
  • TAO Ting-quan 3 ,
  • CHEN Yan-ping 1 ,
  • LI Yan 1, 4 ,
  • FAN Wei-qin 2 ,
  • LEI Li-zhi 2
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  • 1. School of Water Transport and Transportation Engineering, Wuhan Technical College of Communications, Wuhan 430065, China
  • 2. College of Intelligent Construction, Wuchang University of Technology, Wuhan 430223, China
  • 3. CCCC-FHDI Engineering Co., Ltd., Guangzhou 510230, China
  • 4. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China

Received date: 2025-09-01

  Revised date: 2025-10-07

  Online published: 2025-11-25

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Abstract

In response to the limited theoretical research on the anchoring mechanism and seismic performance of pressure-dispersive anchor cables, this study employs an equivalent pseudo-static method combined with Mindlin’s fundamental solution to derive expressions for the compressive stress in the grout body of the anchor section and the side frictional resistance between the rock-soil mass and the anchor body. Through a case study, the stress distribution characteristics and key parameter influence patterns of multi-anchor units under coupled prestress and seismic loads are systematically analyzed. The results indicate that pressure-dispersive anchor cables transfer loads through layered multi-anchor units, reducing the risk of local stress concentration and enhancing the redundancy and seismic performance of the anchoring system. Increasing the bearing plate radius or the anchor hole radius reduces the peak compressive stress in the grout body and the peak side frictional resistance of the anchor body, improving load transfer uniformity and effectively inhibiting local bond-slip failure. An increase in the rock mass Poisson’s ratio leads to a higher peak compressive stress in the grout body but a lower peak side frictional resistance of the anchor body, demonstrating opposing dynamic response patterns. Both seismic and prestress loads exhibit a linear positive correlation with the peak compressive stress in the grout body and the peak side frictional resistance of the anchor body. This research elucidates the stress redistribution mechanism of pressure-dispersive anchor cables, providing a theoretical basis and design references for the seismic design of slope anchoring engineering.

Key words： Geotechnical engineering; Pressure-dispersive anchor cable; Mindlin’s fundamental solution; Pseudo-static method; Seismic mechanism

Cite this article

YE Hong , TAO Ting-quan , CHEN Yan-ping , LI Yan , FAN Wei-qin , LEI Li-zhi . Quasi-static Analysis of Anchoring Mechanism of Pressure-dispersed Anchor Cables under Seismic Action[J]. Journal of Changjiang River Scientific Research Institute, 0 . DOI: 10.11988/ckyyb.20250802

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