为研究深基坑开挖施工过程中渗流场和应力场耦合情况,建立基于非饱和土的渗流-应力全耦合模型,采用非饱和土渗流-应力全耦合模型进行深基坑三维应力场和渗流场的耦合分析,预测在基坑不同的施工阶段中基坑挡土结构的侧向变形和基坑周围地面的沉降的变化,并将理论分析结果与实际监测数据进行对比分析。分析成果表明在需要降水施工的基坑分析中,采用渗流-应力耦合模型来进行基坑的分析与计算更合理,更有效。
Abstract
A model of full coupling between seepage and stress of unsaturated soil was established to research the coupling of seepage field and stress field during the deep excavation of foundation pit. The lateral deformation of soil-retaining structure and the settlement of ground surrounding the foundation pit in different excavation stages were predicted by using this model. The theoretical values were compared with the actual monitored values, which revealed that the seepage-stress coupling model is more rational and more effective in the case of deep excavation with dewatering process.
关键词
深基坑 /
应力场 /
渗流场 /
耦合 /
变形监测
Key words
deep foundation pit /
stress field /
seepage field /
coupling /
deformation monitoring
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参考文献
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