Analysis of Asymmetric Load Behavior in Load-Distribution Anchors

Yong-Jae Song; Kang-Il Lee; Chi-young Yang

doi:10.7843/kgs.2025.41.3.47

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2025 Vol.41, Issue 3 Preview Page

Analysis of Asymmetric Load Behavior in Load-Distribution Anchors 하중분산형 앵커의 편하중 거동특성 분석

30 June 2025. pp. 47-54

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Abstract

A known issue with load-distributing anchors is the occurrence of asymmetric loading, resulting from differences in the lengths of individual strands connected to the anchor body. To quantitatively analyze the behavior of asymmetric loads in such anchors, the loads on each strand were measured using mono-cells, and the results served as the basis for analysis. The measurements revealed that when asymmetric loading occurs simultaneously in both the anchor body and the strands, the asymmetric load can account for up to approximately 76% of the total load. This finding indicates that even if the total load applied to the anchor does not reach the design limit, localized failure may still occur in strands subjected to concentrated asymmetric loading.

Keywords

Asymmetric load

Anchor body

Load-distributing anchor

Mono-cell

하중분산형 앵커에서 발생하는 편하중은 내하체에 연결된 각 강연선의 길이 차이로 인해 발생된다는 문제점이 있다. 하중분산형 앵커에서 발생하는 편하중 거동을 정량적으로 분석하기 위해 내하체와 연결된 각 강연선에 작용하는 하중을 모노셀을 통해 계측하고, 이를 기반으로 분석을 수행하였다. 계측 결과 내하체 및 강연선간에 편하중이 동시에 발생할 경우, 최대 76% 수준의 편하중이 발생하는 것으로 나타났다. 이는 앵커에 작용하는 전체 하중이 설계 한계에 도달하지 않더라도, 편하중이 집중된 강연선에서 국부적으로 파단이 발생할 수 있음을 보여주고 있다.

References

Gu, K. Y., Shin, G. B., Chung, C. K., and Kim, S. R. (2019), "Evaluation of Optimum Spacing between Anchor Bodies of Distributive Compression Anchor Using Numerical Simulation", Journal of the Korean Geotechnical Society, Vol.35, No.7, pp.29-39, https://doi.org/10.7843/kgs.2019.35.7.29.

Han, J. H. (2016), A Study of behavior Characteristics of Load Distributing Ground Anchor System: Based on Field Tests and Numerical Analyses, Doctoral Dissertation, Hongik University.

Han, J. M., Kim, G. H., Woo, J. T., and Lee, K. I. (2017), "Evaluation of Pullout Capacity of Anchors by Bonded Length through Model Test", Journal of the Korean Geosynthetics Society, Vol.16, No.3, pp.11-19, https://doi.org/10.12814/jkgss.2017.16.3.011.

Hong, L. and Jun, F. (2015), "Study on Anchorage Mechanism of Pressure Dispersed Anchor by Numerical Analysis", Chinese Journal of Underground Space and Engineering, Vol.11, pp.446-455.

Hwang, T. H. and Lee, K. I. (2016), "Pullout Behavior of Multiple Compression Type Anchor with the Space of Load Point", J. Korean Soc. Hazard Mitigation, Vol.16, No.3, pp.271-279, https://doi.org/10.9798/KOSHAM.2016.16.3.271.

10.9798/KOSHAM.2016.16.3.271

Lee, J. W. (2014), Effect of Multi-Compression Type Anchor with the Installation Space of Compression Tube, Doctoral Dissertation, Daejin University.

Lee, K. I., Lee, J. W., and Kim, J. H. (2019), "Improvement of Pullout Loads by Variation of Two Load Points in Anchorage System", Geotechnical Engineering, KSCE Journal of Civil Engineering, Vol.23, pp.3330-3339, https://doi.org/10.1007/s12205-019-1532-x.

10.1007/s12205-019-1532-x

Song, S. J., Song, Y. J. , Yang, C. Y., Song, J. H., and Lee, K. I. (2022), "An Asymmetric Load Review of The Load Distributive Type Removal Anchor", Journal of the Korean Geosynthetics Society, pp.142-143.

Song, S. J., Lee, K. I., Chang, Y. C., and Kim, S. Y. (2024), "Field Applicability Evaluation of Monotype Load Cell for Load-Distributing Anchor", Journal of the Korean Geosynthetics Society, Vol.23, No.3, pp.23-30.

Information

Publisher :The Korean Geotechnical Society
Publisher(Ko) :한국지반공학회
Journal Title :Journal of the Korean Geotechnical Society
Journal Title(Ko) :한국지반공학회 논문집
Volume : 41
No :3
Pages :47-54
Received Date : 2025-05-29
Revised Date : 2025-06-19
Accepted Date : 2025-06-19
DOI :https://doi.org/10.7843/kgs.2025.41.3.47

Journal of the Korean Geotechnical Society ISSN:1229-2427(Print) 2288-646X(Online) 한국지반공학회 논문집

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