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Comparison of Bearing Capacity between SCP and GCP by Unit Cell Model Tests  

김병일 (명지대학교 토목환경공학과)
이승원 (현대건설 기술개발원)
김범상 (포스코건설 토목기술팀)
유완규 (명지대학교 토목환경공학과)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.8, 2004 , pp. 41-48 More about this Journal
Abstract
Several centrifuge modelling tests were performed to compare sand compaction pile (SCP) with gravel compaction pile (GCP) at the point of bearing capacity. SCP and GCP were installed as 30, 40, 50, 60, 70% of replacement ratio in cylindrical model tank (diameter = 20 cm, height = 40 cm), and the loading tests were carried out to analyze the bearing characteristics of soft clay ground reinforced by SCP and GCP. As a result of loading tests, the bearing capacities of soft grounds reinforced by SCP and GCP increase with increasing replacement ratio of pile, and a GCP reinforced ground has larger bearing capacity than that of a SCP reinforced ground. Several proposed bearing capacity equations for ground reinforced by SCP or GCP were compared with loading test results.
Keywords
Bearing capacity; Centrifuge modelling tests; GCP(Gravel Compaction Pile); Loading test; Replacement ratio; SCP(Sand Compaction Pile);
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