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http://dx.doi.org/10.12814/jkgss.2016.15.3.027

Analysis on the Analytical Behavior of Soft Ground Reinforced with Granular Compaction Piles  

Kim, Min-Seok (Dept. of civil Engineering, College of Engineering, Chosun University)
Na, Seung-Ju (Dept. of civil Engineering, College of Engineering, Chosun University)
Yang, Yeol-Ho (Dept. of civil Engineering, College of Engineering, Chosun University)
Kim, Daehyeon (Dept. of civil Engineering, College of Engineering, Chosun University)
Publication Information
Journal of the Korean Geosynthetics Society / v.15, no.3, 2016 , pp. 27-37 More about this Journal
Abstract
Although many studies on the Granular Compaction Pile (GCP) have been done by many researchers, the GCP design has not been systematically done due to the absence of the rational design methodology. As the GCP design has been mostly done by engineers' own experiences, some failure cases have been reported to occur. For this reason, it is very difficult to confirm definite causes of the failure and establish the prevention plans for the failure. Therefore, this study aims to investigate the optimal mixing ratio of gravel and sand, the effects of the internal friction angle of the GCP on the stress concentration ratio and the vertical and horizontal settlements. In order to analyze the behavior of the soft ground reinforced with the GCP depending on the different design parameters such as the stress concentration ratio and the internal friction angle, a number of finite element (FE) analyses were performed. From the direct shear test, the optimal mixing ratio of gravel to sand was found to be 70:30. Based on the numerical analyses, as the internal friction angle increased, the stress concentration ratio increased and it converged to a constant value. In addition, the larger the internal friction angle, the smaller the settlements. Consequently, the use of the optimal mixing ratio of gravel and sand can lead to reducing both the lateral flow and the heaving phenomenon.
Keywords
GCP design method; Soft ground; Stress concentration ratio; Prefabricated vertical drains; Internal friction angle;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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