Stress Sharing Behavior and Its Mechanism during Consolidation Process in Composite Ground Improved by Sand Compaction Piles with Low Replacement Area Ratio |
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| Authors: | S -K You K Oda T -H Kim |
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| Institution: |
a Department of Civil Engineering, Myongji College, Seoul, Korea
b Department of Civil Engineering, Graduate School of Engineering, Osaka University, Osaka, Japan
c Division of Civil and Environmental Engineering, Korea Maritime University, Busan, Korea |
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| Abstract: | In order to accurately design a sand compaction pile (SCP) with low replacement area ratio, it is important to understand the mechanical interaction between the sand pile and clay ground and its mechanism during consolidation process in composite ground. In this article, therefore, a series of numerical analyses on composite ground improved by SCP with low replacement area ratio were carried out. The applicability of numerical analyses, in which an elasto-viscoplastic consolidation finite element method was applied, were confirmed by comparing the results obtained from a series of laboratory model tests with the composite ground improved by SCP. Through the results of the numerical analyses, mechanical behavior of the sand pile and clay in composite ground during consolidation is elucidated, together with a stress sharing mechanism between sand pile and clay. |
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| Keywords: | composite ground low replacement area ratio numerical analysis sand compaction pile stress sharing mechanism |
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