Volume 39 Issue 3
Jun.  2025
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Article Navigation >  GEOTECHNICAL ENGINEERING TECHNIQUE  > 2025  >  39(3): 423-430
Liu Xiujun, Fu Wenguang. Failure mode analysis of fully grouted anchorage system[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(3): 423-430. doi: 10.20265/j.cnki.issn.1007-2993.2024-0227
Citation: Liu Xiujun, Fu Wenguang. Failure mode analysis of fully grouted anchorage system[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(3): 423-430. doi: 10.20265/j.cnki.issn.1007-2993.2024-0227
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Failure mode analysis of fully grouted anchorage system

doi: 10.20265/j.cnki.issn.1007-2993.2024-0227
  • 1.

    State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China

  • 2.

    Shenzhen Geotechnical Investigation & Surveying Institute (Group) Co., Ltd., Shenzhen 518028, Guangdong, China

  • 3.

    Shenzhen GongKan Geotechnical Group Co., Ltd., Shenzhen 518063, Guangdong, China

  • Received Date: 2024-05-24
  • Accepted Date: 2024-10-29
  • Rev Recd Date: 2024-07-29
  • Publish Date: 2025-06-09
    Abstract
  • With the rapid development of geotechnical anchoring technology, grouting anchoring technology has been widely used in anchoring engineering due to its advantages of low cost and easy installation. Previous research on grouted anchorage systems has focused on the load-bearing performance of the anchorage system, and the study of the failure modes of the anchorage system is not yet sufficient. The following research tasks were systematically conducted. (1) A refined definition of fully grouted anchorage systems was proposed. (2) The anchorage mechanism of the fully grouted anchorage system was analyzed. (3) Eight failure modes of the fully grouted anchorage system were identified, and the causes of each failure mode were analyzed. (4) The strain distribution law of the grout of the fully grouted anchorage system under five different decoupling states of the two anchorage interfaces was analyzed, and the idea of analyzing the decoupling state of the anchorage interface by monitoring the strain distribution curve of the grout was proposed. (5) A failure mode analysis was conducted on the fully grouted test anchor of the Shenping Anchor Cable Comprehensive Test Project. The results show that the failure of the fully grouted anchorage system is often the result of a combination or comprehensive effect of several failure modes. During the pull-out process, both anchorage interfaces will experience varying degrees of decoupling, while there will be a weak anchorage interface.

     

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