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Article

Modeling and Load Capacity Analysis of Helical Anchors for Dam Foundation Reinforcement Against Water Disasters

School of Civil and Transportation Engineering, Henan University of Urban Construction, Pingdingshan 467036, China
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Author to whom correspondence should be addressed.
Water 2025, 17(15), 2296; https://doi.org/10.3390/w17152296 (registering DOI)
Submission received: 18 June 2025 / Revised: 26 July 2025 / Accepted: 31 July 2025 / Published: 1 August 2025
(This article belongs to the Special Issue Disaster Analysis and Prevention of Dam and Slope Engineering)

Abstract

Hydraulic actions may compromise dam foundation stability. Helical anchors have been used in dam foundation reinforcement projects because of the advantages of large uplift and compression bearing capacity, fast installation, and convenient recovery. However, the research on the anchor plate, which plays a key role in the bearing performance of helical anchors, is insufficient at present. Based on the finite element model of helical anchor, this study reveals the failure mode and influencing factors of the anchor plate and establishes the theoretical model of deformation calculation. The results showed that the helical anchor plate had obvious bending deformation when the dam foundation reinforced with a helical anchor reached large deformation. The helical anchor plate can be simplified to a flat circular disk. The stress distribution of the closed flat disk and the open flat disk was consistent with that of the helical disk. The maximum deformation of the closed flat disk was slightly smaller than that of the helical disk (less than 6%), and the deformation of the open flat disk was consistent with that of the helical disk. The results fill the blank of the design basis of helical anchor plate and provide a reference basis for the engineering design.
Keywords: helical anchor; dam foundation; numerical analysis; anchor plate; mechanical performance helical anchor; dam foundation; numerical analysis; anchor plate; mechanical performance

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MDPI and ACS Style

Lv, D.; Shi, Z.; Li, Z.; Qu, S.; Liu, H. Modeling and Load Capacity Analysis of Helical Anchors for Dam Foundation Reinforcement Against Water Disasters. Water 2025, 17, 2296. https://doi.org/10.3390/w17152296

AMA Style

Lv D, Shi Z, Li Z, Qu S, Liu H. Modeling and Load Capacity Analysis of Helical Anchors for Dam Foundation Reinforcement Against Water Disasters. Water. 2025; 17(15):2296. https://doi.org/10.3390/w17152296

Chicago/Turabian Style

Lv, Dawei, Zixian Shi, Zhendu Li, Songzhao Qu, and Heng Liu. 2025. "Modeling and Load Capacity Analysis of Helical Anchors for Dam Foundation Reinforcement Against Water Disasters" Water 17, no. 15: 2296. https://doi.org/10.3390/w17152296

APA Style

Lv, D., Shi, Z., Li, Z., Qu, S., & Liu, H. (2025). Modeling and Load Capacity Analysis of Helical Anchors for Dam Foundation Reinforcement Against Water Disasters. Water, 17(15), 2296. https://doi.org/10.3390/w17152296

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