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http://dx.doi.org/10.14481/jkges.2014.15.9.87

The Evaluation of Bearing Resistance of Underreamed Ground Anchor through Realistic Model Experiments  

Min, Kyongnam (Department of Geotechnical, Sejong E&C)
Lee, Jaewon (Department of Geotechnical, Sejong E&C)
Lee, Junggwan (Department of Geotechnical, Sejong E&C)
Lee, Dongwon (Department of Geotechnical, Sejong E&C)
Jung, Chanmuk (College of Railroad and Transportation, Woosong University)
Publication Information
Journal of the Korean GEO-environmental Society / v.15, no.9, 2014 , pp. 87-92 More about this Journal
Abstract
The Ground anchor is reinforcement to resist pull-out through ground that is used supports structure. The pull-out resistance of anchor is constructed by skin friction resistance from compression borehole wall in expanded wings and bearing pressure from the ground. Especially, underreamed ground anchor is reinforcement that adopts active reinforcement to prevent deformation of ground using bearing resistance generated reaming anchorage. This study is conducted to calculate bearing resistance of underreamed ground anchor. Realistic model tests were fulfilled to determine bearing resistance of anchor, and correlate results of tests to Uniaxial Compressive Strengths (UCS) of ground models that assumed weathered rock condition in 8 case. In a comprehensive series of the tests, the bearing resistances were measured by pull-out tests. The bearing resistances derived from tests have a linear correlation with UCS. We also suggest empirical equation between bearing resistance and UCS of rocks by single linear regression analyses. In test results of this study, the bearing resistances were evaluated approximately 13 times higher than UCS of the grounds, and it is qualitatively similar to numerical values of pull-out force derived from theory.
Keywords
Enlarged borehole; Bearing anchor; Realistic model experiments; Bearing resistance;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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