Consolidation Characteristics of SCP-Reinforced Composite Ground

摘要

Sand compaction pile (SCP) method is composed of compacted sand pile inserted into the soft clay deposit by displacement method. SCP-reinforced ground is composite soil which consists of the SCP and the surrounding soft soil. While a surcharge load is applied on composite ground, time-dependent behavior occurs in the soft soil due to consolidation according to radial flow toward SCP and the corresponding stress transfer also takes place between the SCP and the soft soil. This paper presents the numerical results of cylindrical composite ground to investigate consolidation characteristics and the stress transfer mechanism of composite ground reinforced by SCP under quaywall. The results show that the consolidation of soft clay gives a significant effect on the stress transfer mechanism and stress concentration ratio of composite ground.