모래다짐말뚝으로 개량된 복합지반의 거동에 관한 원심모형실험
모래다짐말뚝으로 개량된 복합지반의 거동에 관한 원심모형실험
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DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
신방웅
中科院分区：
文献类型：
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作者：
배우석;오세욱;신방웅
通过离心模型试验，研究了低面积置换率挤密砂桩复合地基中SCP与周围粘性土的应力分担情况。采用“冻结桩”法形成SCP，并在桩体及周围粘性土上设置压力盒，观察SCP的应力分担特性。离心试验结果表明，应力集中比的大小主要受面积置换率、加载条件和经过时间的影响。
In this study, centrifugal model tests were performed to evaluate the stress sharing between SCP and surrounding clayey soil at composite ground improved by sand compaction pile with the low area replacement ratio. The SCPs were formed by the "frozen pile" method and pressure cells were installed on pile and surrounding clayey soil to observe stress sharing characteristics. As a result of centrifugal tests, it is shown that the value of stress concentration ratio is mainly affected by area replacement ratio, loading condition and elapsed time.