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Study on Lond Transfer Characteristics of Sand Compaction Piles in Soft Soil Deposits  

Kim Jaekwon (Chief of Civil Technology Team, Samsung Corporation)
Kim Soo-Il (Yonsei Univ.)
Jung Sang-Seom (Yonsei Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.7, 2004 , pp. 183-196 More about this Journal
Abstract
Sand Compaction Pile (SCP) is a soft-ground improvement technique used for not only accelerating consolidation but also increasing bearing capacity of soils. In this study, laboratory tests and 3-D finite element analysis were peformed to investigate the characteristics of load transfer in SCP with an emphasis on free-strain behavior of piles with low replacement ratios in the range of 30 to $50\%$. Through these focused tests and numerical analyses, we proposed a simplified method to analyze the load transfer characteristics of SCP in soft ground. Moreover, it was shown that estimated normal stresses in SCP using the proposed method were in a reasonable agreement with actual values.
Keywords
Finite element analysis; Free strain; Load transfer characteristics; Replacement ratio; Sand compaction pile (SCP); Stress concentration ratio;
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