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http://dx.doi.org/10.7843/kgs.2019.35.7.29

Evaluation of Optimum Spacing between Anchor Bodies of Distributive Compression Anchor Using Numerical Simulation  

Gu, Kyo-Young (Dept. of Civil and Environmental Eng., Seoul National Univ.)
Shin, Gyu-Bum (Dept. of Civil and Environmental Eng., Seoul National Univ.)
Chung, Choong-Ki (Dept. of Civil and Environmental Eng., Seoul National Univ.)
Kim, Sung-Ryul (Dept. of Civil and Environmental Eng., Seoul National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.35, no.7, 2019 , pp. 29-39 More about this Journal
Abstract
Load distributive compression anchors distribute the compressive stress in the grout and increase the pull-out capacity of the anchor by using multiple anchor bodies. In this anchor type, the spacing between the anchor bodies has a large influence on the stress in the grout. However, there are few researches about the spacing and there are no design standards. Therefore, the effect of the anchor body spacing on the grout stress was analyzed by performing finite element analyses. First, the applicability of the numerical modeling was verified by comparing with field test results of a compression anchor. Then, the parametric study was performed varying soil type, anchor body spacing, and load magnitude. The analysis results showed that the maximum compressive stress in the grout increased at the narrower spacing and the tensile stress developed at the wider spacing. Therefore, the optimum spacing was defined as the spacing, which prevents the superposition of compressive stresses and minimize the tensile stress. Finally, the optimum spacing was proposed according to the soil type and the load magnitude.
Keywords
Compression anchor; Anchor body; Numerical analysis; Load transfer; Grout stress;
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Times Cited By KSCI : 1  (Citation Analysis)
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