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http://dx.doi.org/10.12814/jkgss.2017.16.2.035

Stress Concentration Ratio According to Penetration Rate of Composite Ground Reinforced with GCP  

Na, Seung-Ju (Department of Civil Engineering, Chosun Univ.)
Kim, Daehyeon (Department of Civil Engineering, Chosun Univ.)
Lee, Ik-Hyo (Department of Marine and Civil Engineering, Chonnam National Univ.)
Lee, Kang-Il (School of Civil and Environmental Engineering, Urban Design and Study, Daejin Univ.)
Publication Information
Journal of the Korean Geosynthetics Society / v.16, no.2, 2017 , pp. 35-45 More about this Journal
Abstract
Gravel compaction pile (GCP) is widely used as it increases the bearing capacity of soft ground and reduces the consolidation settlement. Stress concentration ratio for design is dependent on the area replacement, surcharge pressure, depth and penetration rate. However, a range of stress concentration ratio obtained through field, laboratory experiments and numerical analysis is large. But since the main objective of the study is to evaluate the stress concentration ratio and settlement for both area replacement ratio and penetration rate through numerical analysis. Numerical analysis using the finite element program ABAQUS 6.12-4 has been performed for the composite ground with GCP. As a result, the stress concentration ratio at the points except for the point of top is in the range of 1.21-5.36, 1.19-5.45, 2.16-5.60 for 60%, 80% and 100% penetration, respectively. In general, as the penetration rate and area replacement ratio increases, the stress concentration ratio tends to increase.
Keywords
GCP method; Stress concentration ratio; Area replacement ratio; Penetration; Settlement;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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